SDL_sound_CoreAudio: decoders/shn.c annotate

annotate decoders/shn.c @ 161:0f958979b1dd

Updated my intro comments.

author	Ryan C. Gordon <icculus@icculus.org>
date	Fri, 09 Nov 2001 23:57:23 +0000
parents	1df5c106504e
children	47cc2de2ae36

rev	line source
86 155ab2a427ca Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	1 /*
155ab2a427ca Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	2 * SDL_sound -- An abstract sound format decoding API.
155ab2a427ca Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	3 * Copyright (C) 2001 Ryan C. Gordon.
155ab2a427ca Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	4 *
155ab2a427ca Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	5 * This library is free software; you can redistribute it and/or
155ab2a427ca Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	6 * modify it under the terms of the GNU Lesser General Public
155ab2a427ca Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	7 * License as published by the Free Software Foundation; either
155ab2a427ca Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	8 * version 2.1 of the License, or (at your option) any later version.
155ab2a427ca Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	9 *
155ab2a427ca Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	10 * This library is distributed in the hope that it will be useful,
155ab2a427ca Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
155ab2a427ca Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
155ab2a427ca Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	13 * Lesser General Public License for more details.
155ab2a427ca Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	14 *
155ab2a427ca Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	15 * You should have received a copy of the GNU Lesser General Public
155ab2a427ca Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	16 * License along with this library; if not, write to the Free Software
155ab2a427ca Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	17 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
155ab2a427ca Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	18 */
155ab2a427ca Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	19
155ab2a427ca Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	20 /*
155ab2a427ca Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	21 * Shorten decoder for SDL_sound.
155ab2a427ca Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	22 *
155ab2a427ca Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	23 * This driver handles Shorten-compressed waveforms. Despite the fact that
161 0f958979b1dd Updated my intro comments. Ryan C. Gordon <icculus@icculus.org> parents: 149 diff changeset	24 * SHNs tend to be much bigger than MP3s, they are still the de facto
0f958979b1dd Updated my intro comments. Ryan C. Gordon <icculus@icculus.org> parents: 149 diff changeset	25 * standard in online music trading communities. If an MP3 crunches the
0f958979b1dd Updated my intro comments. Ryan C. Gordon <icculus@icculus.org> parents: 149 diff changeset	26 * waveform to 10-20 percent of its original size, SHNs only go to about
0f958979b1dd Updated my intro comments. Ryan C. Gordon <icculus@icculus.org> parents: 149 diff changeset	27 * 50-60%. Why do the Phish fans of the world use this format then? Rabid
0f958979b1dd Updated my intro comments. Ryan C. Gordon <icculus@icculus.org> parents: 149 diff changeset	28 * music traders appreciate the sound quality; SHNs, unlike MP3s, do not
0f958979b1dd Updated my intro comments. Ryan C. Gordon <icculus@icculus.org> parents: 149 diff changeset	29 * throw away any part of the waveform. Yes, there are people that notice
0f958979b1dd Updated my intro comments. Ryan C. Gordon <icculus@icculus.org> parents: 149 diff changeset	30 * this, and further more, they demand it...and if they can't get a good
0f958979b1dd Updated my intro comments. Ryan C. Gordon <icculus@icculus.org> parents: 149 diff changeset	31 * transfer of those larger files over the 'net, they haven't underestimated
0f958979b1dd Updated my intro comments. Ryan C. Gordon <icculus@icculus.org> parents: 149 diff changeset	32 * the bandwidth of CDs travelling the world through the postal system.
86 155ab2a427ca Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	33 *
155ab2a427ca Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	34 * Shorten homepage: http://www.softsound.com/Shorten.html
155ab2a427ca Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	35 *
155ab2a427ca Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	36 * The Shorten format was gleaned from the shorten codebase, by Tony
101 c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	37 * Robinson and SoftSound Limited.
86 155ab2a427ca Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	38 *
155ab2a427ca Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	39 * Please see the file LICENSE in the source's root directory.
155ab2a427ca Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	40 *
155ab2a427ca Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	41 * This file written by Ryan C. Gordon. (icculus@clutteredmind.org)
155ab2a427ca Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	42 */
155ab2a427ca Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	43
106 40de367eb59e Changing my include structure to do this right. Ryan C. Gordon <icculus@icculus.org> parents: 104 diff changeset	44 #if HAVE_CONFIG_H
40de367eb59e Changing my include structure to do this right. Ryan C. Gordon <icculus@icculus.org> parents: 104 diff changeset	45 # include <config.h>
40de367eb59e Changing my include structure to do this right. Ryan C. Gordon <icculus@icculus.org> parents: 104 diff changeset	46 #endif
100 6d9fdec2f708 added config.h, added --enable-debug flag, various other changes to the build system fingolfin parents: 86 diff changeset	47
114 dd95a12539fd Changed an #if defined to #ifdef, for consistency with the other Ryan C. Gordon <icculus@icculus.org> parents: 106 diff changeset	48 #ifdef SOUND_SUPPORTS_SHN
104 103cfcb3c014 Updated to fix build system problem. Ryan C. Gordon <icculus@icculus.org> parents: 101 diff changeset	49
86 155ab2a427ca Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	50 #include <stdio.h>
155ab2a427ca Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	51 #include <stdlib.h>
155ab2a427ca Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	52 #include <string.h>
155ab2a427ca Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	53 #include <assert.h>
155ab2a427ca Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	54
106 40de367eb59e Changing my include structure to do this right. Ryan C. Gordon <icculus@icculus.org> parents: 104 diff changeset	55 #include "SDL_sound.h"
40de367eb59e Changing my include structure to do this right. Ryan C. Gordon <icculus@icculus.org> parents: 104 diff changeset	56
40de367eb59e Changing my include structure to do this right. Ryan C. Gordon <icculus@icculus.org> parents: 104 diff changeset	57 #define __SDL_SOUND_INTERNAL__
40de367eb59e Changing my include structure to do this right. Ryan C. Gordon <icculus@icculus.org> parents: 104 diff changeset	58 #include "SDL_sound_internal.h"
40de367eb59e Changing my include structure to do this right. Ryan C. Gordon <icculus@icculus.org> parents: 104 diff changeset	59
126 8a5a1c61d3c6 Fix for MS Visual C. Ryan C. Gordon <icculus@icculus.org> parents: 114 diff changeset	60 #ifdef _MSC_VER
8a5a1c61d3c6 Fix for MS Visual C. Ryan C. Gordon <icculus@icculus.org> parents: 114 diff changeset	61 # define inline __inline
8a5a1c61d3c6 Fix for MS Visual C. Ryan C. Gordon <icculus@icculus.org> parents: 114 diff changeset	62 #endif
86 155ab2a427ca Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	63
155ab2a427ca Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	64 static int SHN_init(void);
155ab2a427ca Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	65 static void SHN_quit(void);
155ab2a427ca Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	66 static int SHN_open(Sound_Sample sample, const char ext);
155ab2a427ca Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	67 static void SHN_close(Sound_Sample *sample);
155ab2a427ca Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	68 static Uint32 SHN_read(Sound_Sample *sample);
155ab2a427ca Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	69
149 1df5c106504e Decoders can now list multiple file extensions. Ryan C. Gordon <icculus@icculus.org> parents: 126 diff changeset	70 static const char *extensions_shn[] = { "SHN", NULL };
86 155ab2a427ca Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	71 const Sound_DecoderFunctions __Sound_DecoderFunctions_SHN =
155ab2a427ca Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	72 {
155ab2a427ca Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	73 {
149 1df5c106504e Decoders can now list multiple file extensions. Ryan C. Gordon <icculus@icculus.org> parents: 126 diff changeset	74 extensions_shn,
86 155ab2a427ca Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	75 "Shorten-compressed audio data",
155ab2a427ca Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	76 "Ryan C. Gordon <icculus@clutteredmind.org>",
155ab2a427ca Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	77 "http://www.icculus.org/SDL_sound/"
155ab2a427ca Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	78 },
155ab2a427ca Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	79
155ab2a427ca Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	80 SHN_init, /* init() method */
155ab2a427ca Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	81 SHN_quit, /* quit() method */
155ab2a427ca Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	82 SHN_open, /* open() method */
155ab2a427ca Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	83 SHN_close, /* close() method */
155ab2a427ca Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	84 SHN_read /* read() method */
155ab2a427ca Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	85 };
155ab2a427ca Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	86
155ab2a427ca Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	87
101 c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	88 #define SHN_BUFSIZ 512
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	89
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	90 typedef struct
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	91 {
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	92 Sint32 version;
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	93 Sint32 datatype;
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	94 Sint32 nchan;
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	95 Sint32 blocksize;
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	96 Sint32 maxnlpc;
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	97 Sint32 nmean;
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	98 Sint32 nwrap;
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	99 Sint32 **buffer;
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	100 Sint32 **offset;
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	101 Sint32 *qlpc;
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	102 Sint32 lpcqoffset;
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	103 Sint32 bitshift;
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	104 int nbitget;
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	105 int nbyteget;
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	106 Uint8 *getbuf;
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	107 Uint8 *getbufp;
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	108 Uint32 gbuffer;
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	109 Uint8 *backBuffer;
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	110 Uint32 backBufferSize;
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	111 Uint32 backBufLeft;
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	112 } shn_t;
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	113
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	114
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	115 static const Uint32 mask_table[] =
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	116 {
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	117 0x00000000, 0x00000001, 0x00000003, 0x00000007, 0x0000000F, 0x0000001F,
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	118 0x0000003F, 0x0000007F, 0x000000FF, 0x000001FF, 0x000003FF, 0x000007FF,
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	119 0x00000FFF, 0x00001FFF, 0x00003FFF, 0x00007FFF, 0x0000FFFF, 0x0001FFFF,
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	120 0x0003FFFF, 0x0007FFFF, 0x000FFFFF, 0x001FFFFF, 0x003FFFFF, 0x007FFFFF,
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	121 0x00FFFFFF, 0x01FFFFFF, 0x03FFFFFF, 0x07FFFFFF, 0x0FFFFFFF, 0x1FFFFFFF,
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	122 0x3FFFFFFF, 0x7FFFFFFF, 0xFFFFFFFF
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	123 };
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	124
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	125
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	126 static const Uint8 ulaw_outward[13][256] = {
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	127 {127,0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,32,33,34,35,36,37,38,39,40,41,42,43,44,45,46,47,48,49,50,51,52,53,54,55,56,57,58,59,60,61,62,63,64,65,66,67,68,69,70,71,72,73,74,75,76,77,78,79,80,81,82,83,84,85,86,87,88,89,90,91,92,93,94,95,96,97,98,99,100,101,102,103,104,105,106,107,108,109,110,111,112,113,114,115,116,117,118,119,120,121,122,123,124,125,126,255,254,253,252,251,250,249,248,247,246,245,244,243,242,241,240,239,238,237,236,235,234,233,232,231,230,229,228,227,226,225,224,223,222,221,220,219,218,217,216,215,214,213,212,211,210,209,208,207,206,205,204,203,202,201,200,199,198,197,196,195,194,193,192,191,190,189,188,187,186,185,184,183,182,181,180,179,178,177,176,175,174,173,172,171,170,169,168,167,166,165,164,163,162,161,160,159,158,157,156,155,154,153,152,151,150,149,148,147,146,145,144,143,142,141,140,139,138,137,136,135,134,133,132,131,130,129,128},
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	128 {112,114,116,118,120,122,124,126,127,0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,32,33,34,35,36,37,38,39,40,41,42,43,44,45,46,47,48,49,50,51,52,53,54,55,56,57,58,59,60,61,62,63,64,65,66,67,68,69,70,71,72,73,74,75,76,77,78,79,80,81,82,83,84,85,86,87,88,89,90,91,92,93,94,95,96,97,98,99,100,101,102,103,104,105,106,107,108,109,110,111,113,115,117,119,121,123,125,255,253,251,249,247,245,243,241,239,238,237,236,235,234,233,232,231,230,229,228,227,226,225,224,223,222,221,220,219,218,217,216,215,214,213,212,211,210,209,208,207,206,205,204,203,202,201,200,199,198,197,196,195,194,193,192,191,190,189,188,187,186,185,184,183,182,181,180,179,178,177,176,175,174,173,172,171,170,169,168,167,166,165,164,163,162,161,160,159,158,157,156,155,154,153,152,151,150,149,148,147,146,145,144,143,142,141,140,139,138,137,136,135,134,133,132,131,130,129,128,254,252,250,248,246,244,242,240},
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	129 {96,98,100,102,104,106,108,110,112,113,114,116,117,118,120,121,122,124,125,126,127,0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,32,33,34,35,36,37,38,39,40,41,42,43,44,45,46,47,48,49,50,51,52,53,54,55,56,57,58,59,60,61,62,63,64,65,66,67,68,69,70,71,72,73,74,75,76,77,78,79,80,81,82,83,84,85,86,87,88,89,90,91,92,93,94,95,97,99,101,103,105,107,109,111,115,119,123,255,251,247,243,239,237,235,233,231,229,227,225,223,222,221,220,219,218,217,216,215,214,213,212,211,210,209,208,207,206,205,204,203,202,201,200,199,198,197,196,195,194,193,192,191,190,189,188,187,186,185,184,183,182,181,180,179,178,177,176,175,174,173,172,171,170,169,168,167,166,165,164,163,162,161,160,159,158,157,156,155,154,153,152,151,150,149,148,147,146,145,144,143,142,141,140,139,138,137,136,135,134,133,132,131,130,129,128,254,253,252,250,249,248,246,245,244,242,241,240,238,236,234,232,230,228,226,224},
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	130 {80,82,84,86,88,90,92,94,96,97,98,100,101,102,104,105,106,108,109,110,112,113,114,115,116,117,118,120,121,122,123,124,125,126,127,0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,32,33,34,35,36,37,38,39,40,41,42,43,44,45,46,47,48,49,50,51,52,53,54,55,56,57,58,59,60,61,62,63,64,65,66,67,68,69,70,71,72,73,74,75,76,77,78,79,81,83,85,87,89,91,93,95,99,103,107,111,119,255,247,239,235,231,227,223,221,219,217,215,213,211,209,207,206,205,204,203,202,201,200,199,198,197,196,195,194,193,192,191,190,189,188,187,186,185,184,183,182,181,180,179,178,177,176,175,174,173,172,171,170,169,168,167,166,165,164,163,162,161,160,159,158,157,156,155,154,153,152,151,150,149,148,147,146,145,144,143,142,141,140,139,138,137,136,135,134,133,132,131,130,129,128,254,253,252,251,250,249,248,246,245,244,243,242,241,240,238,237,236,234,233,232,230,229,228,226,225,224,222,220,218,216,214,212,210,208},
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	131 {64,66,68,70,72,74,76,78,80,81,82,84,85,86,88,89,90,92,93,94,96,97,98,99,100,101,102,104,105,106,107,108,109,110,112,113,114,115,116,117,118,119,120,121,122,123,124,125,126,127,0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,32,33,34,35,36,37,38,39,40,41,42,43,44,45,46,47,48,49,50,51,52,53,54,55,56,57,58,59,60,61,62,63,65,67,69,71,73,75,77,79,83,87,91,95,103,111,255,239,231,223,219,215,211,207,205,203,201,199,197,195,193,191,190,189,188,187,186,185,184,183,182,181,180,179,178,177,176,175,174,173,172,171,170,169,168,167,166,165,164,163,162,161,160,159,158,157,156,155,154,153,152,151,150,149,148,147,146,145,144,143,142,141,140,139,138,137,136,135,134,133,132,131,130,129,128,254,253,252,251,250,249,248,247,246,245,244,243,242,241,240,238,237,236,235,234,233,232,230,229,228,227,226,225,224,222,221,220,218,217,216,214,213,212,210,209,208,206,204,202,200,198,196,194,192},
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	132 {49,51,53,55,57,59,61,63,64,66,67,68,70,71,72,74,75,76,78,79,80,81,82,84,85,86,87,88,89,90,92,93,94,95,96,97,98,99,100,101,102,104,105,106,107,108,109,110,111,112,113,114,115,116,117,118,119,120,121,122,123,124,125,126,127,0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,32,33,34,35,36,37,38,39,40,41,42,43,44,45,46,47,48,50,52,54,56,58,60,62,65,69,73,77,83,91,103,255,231,219,211,205,201,197,193,190,188,186,184,182,180,178,176,175,174,173,172,171,170,169,168,167,166,165,164,163,162,161,160,159,158,157,156,155,154,153,152,151,150,149,148,147,146,145,144,143,142,141,140,139,138,137,136,135,134,133,132,131,130,129,128,254,253,252,251,250,249,248,247,246,245,244,243,242,241,240,239,238,237,236,235,234,233,232,230,229,228,227,226,225,224,223,222,221,220,218,217,216,215,214,213,212,210,209,208,207,206,204,203,202,200,199,198,196,195,194,192,191,189,187,185,183,181,179,177},
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	133 {32,34,36,38,40,42,44,46,48,49,51,52,53,55,56,57,59,60,61,63,64,65,66,67,68,70,71,72,73,74,75,76,78,79,80,81,82,83,84,85,86,87,88,89,90,92,93,94,95,96,97,98,99,100,101,102,103,104,105,106,107,108,109,110,111,112,113,114,115,116,117,118,119,120,121,122,123,124,125,126,127,0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,33,35,37,39,41,43,45,47,50,54,58,62,69,77,91,255,219,205,197,190,186,182,178,175,173,171,169,167,165,163,161,159,158,157,156,155,154,153,152,151,150,149,148,147,146,145,144,143,142,141,140,139,138,137,136,135,134,133,132,131,130,129,128,254,253,252,251,250,249,248,247,246,245,244,243,242,241,240,239,238,237,236,235,234,233,232,231,230,229,228,227,226,225,224,223,222,221,220,218,217,216,215,214,213,212,211,210,209,208,207,206,204,203,202,201,200,199,198,196,195,194,193,192,191,189,188,187,185,184,183,181,180,179,177,176,174,172,170,168,166,164,162,160},
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	134 {16,18,20,22,24,26,28,30,32,33,34,36,37,38,40,41,42,44,45,46,48,49,50,51,52,53,55,56,57,58,59,60,61,63,64,65,66,67,68,69,70,71,72,73,74,75,76,78,79,80,81,82,83,84,85,86,87,88,89,90,91,92,93,94,95,96,97,98,99,100,101,102,103,104,105,106,107,108,109,110,111,112,113,114,115,116,117,118,119,120,121,122,123,124,125,126,127,0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,17,19,21,23,25,27,29,31,35,39,43,47,54,62,77,255,205,190,182,175,171,167,163,159,157,155,153,151,149,147,145,143,142,141,140,139,138,137,136,135,134,133,132,131,130,129,128,254,253,252,251,250,249,248,247,246,245,244,243,242,241,240,239,238,237,236,235,234,233,232,231,230,229,228,227,226,225,224,223,222,221,220,219,218,217,216,215,214,213,212,211,210,209,208,207,206,204,203,202,201,200,199,198,197,196,195,194,193,192,191,189,188,187,186,185,184,183,181,180,179,178,177,176,174,173,172,170,169,168,166,165,164,162,161,160,158,156,154,152,150,148,146,144},
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	135 {2,4,6,8,10,12,14,16,17,18,20,21,22,24,25,26,28,29,30,32,33,34,35,36,37,38,40,41,42,43,44,45,46,48,49,50,51,52,53,54,55,56,57,58,59,60,61,63,64,65,66,67,68,69,70,71,72,73,74,75,76,77,78,79,80,81,82,83,84,85,86,87,88,89,90,91,92,93,94,95,96,97,98,99,100,101,102,103,104,105,106,107,108,109,110,111,112,113,114,115,116,117,118,119,120,121,122,123,124,125,126,127,0,1,3,5,7,9,11,13,15,19,23,27,31,39,47,62,255,190,175,167,159,155,151,147,143,141,139,137,135,133,131,129,254,253,252,251,250,249,248,247,246,245,244,243,242,241,240,239,238,237,236,235,234,233,232,231,230,229,228,227,226,225,224,223,222,221,220,219,218,217,216,215,214,213,212,211,210,209,208,207,206,205,204,203,202,201,200,199,198,197,196,195,194,193,192,191,189,188,187,186,185,184,183,182,181,180,179,178,177,176,174,173,172,171,170,169,168,166,165,164,163,162,161,160,158,157,156,154,153,152,150,149,148,146,145,144,142,140,138,136,134,132,130,128},
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	136 {1,2,4,5,6,8,9,10,12,13,14,16,17,18,19,20,21,22,24,25,26,27,28,29,30,32,33,34,35,36,37,38,39,40,41,42,43,44,45,46,48,49,50,51,52,53,54,55,56,57,58,59,60,61,62,63,64,65,66,67,68,69,70,71,72,73,74,75,76,77,78,79,80,81,82,83,84,85,86,87,88,89,90,91,92,93,94,95,96,97,98,99,100,101,102,103,104,105,106,107,108,109,110,111,112,113,114,115,116,117,118,119,120,121,122,123,124,125,126,127,0,3,7,11,15,23,31,47,255,175,159,151,143,139,135,131,254,253,252,251,250,249,248,247,246,245,244,243,242,241,240,239,238,237,236,235,234,233,232,231,230,229,228,227,226,225,224,223,222,221,220,219,218,217,216,215,214,213,212,211,210,209,208,207,206,205,204,203,202,201,200,199,198,197,196,195,194,193,192,191,190,189,188,187,186,185,184,183,182,181,180,179,178,177,176,174,173,172,171,170,169,168,167,166,165,164,163,162,161,160,158,157,156,155,154,153,152,150,149,148,147,146,145,144,142,141,140,138,137,136,134,133,132,130,129,128},
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	137 {1,2,3,4,5,6,8,9,10,11,12,13,14,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,32,33,34,35,36,37,38,39,40,41,42,43,44,45,46,47,48,49,50,51,52,53,54,55,56,57,58,59,60,61,62,63,64,65,66,67,68,69,70,71,72,73,74,75,76,77,78,79,80,81,82,83,84,85,86,87,88,89,90,91,92,93,94,95,96,97,98,99,100,101,102,103,104,105,106,107,108,109,110,111,112,113,114,115,116,117,118,119,120,121,122,123,124,125,126,127,0,7,15,31,255,159,143,135,254,253,252,251,250,249,248,247,246,245,244,243,242,241,240,239,238,237,236,235,234,233,232,231,230,229,228,227,226,225,224,223,222,221,220,219,218,217,216,215,214,213,212,211,210,209,208,207,206,205,204,203,202,201,200,199,198,197,196,195,194,193,192,191,190,189,188,187,186,185,184,183,182,181,180,179,178,177,176,175,174,173,172,171,170,169,168,167,166,165,164,163,162,161,160,158,157,156,155,154,153,152,151,150,149,148,147,146,145,144,142,141,140,139,138,137,136,134,133,132,131,130,129,128},
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	138 {1,2,3,4,5,6,7,8,9,10,11,12,13,14,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,32,33,34,35,36,37,38,39,40,41,42,43,44,45,46,47,48,49,50,51,52,53,54,55,56,57,58,59,60,61,62,63,64,65,66,67,68,69,70,71,72,73,74,75,76,77,78,79,80,81,82,83,84,85,86,87,88,89,90,91,92,93,94,95,96,97,98,99,100,101,102,103,104,105,106,107,108,109,110,111,112,113,114,115,116,117,118,119,120,121,122,123,124,125,126,127,0,15,255,143,254,253,252,251,250,249,248,247,246,245,244,243,242,241,240,239,238,237,236,235,234,233,232,231,230,229,228,227,226,225,224,223,222,221,220,219,218,217,216,215,214,213,212,211,210,209,208,207,206,205,204,203,202,201,200,199,198,197,196,195,194,193,192,191,190,189,188,187,186,185,184,183,182,181,180,179,178,177,176,175,174,173,172,171,170,169,168,167,166,165,164,163,162,161,160,159,158,157,156,155,154,153,152,151,150,149,148,147,146,145,144,142,141,140,139,138,137,136,135,134,133,132,131,130,129,128},
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	139 {1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,32,33,34,35,36,37,38,39,40,41,42,43,44,45,46,47,48,49,50,51,52,53,54,55,56,57,58,59,60,61,62,63,64,65,66,67,68,69,70,71,72,73,74,75,76,77,78,79,80,81,82,83,84,85,86,87,88,89,90,91,92,93,94,95,96,97,98,99,100,101,102,103,104,105,106,107,108,109,110,111,112,113,114,115,116,117,118,119,120,121,122,123,124,125,126,127,0,255,254,253,252,251,250,249,248,247,246,245,244,243,242,241,240,239,238,237,236,235,234,233,232,231,230,229,228,227,226,225,224,223,222,221,220,219,218,217,216,215,214,213,212,211,210,209,208,207,206,205,204,203,202,201,200,199,198,197,196,195,194,193,192,191,190,189,188,187,186,185,184,183,182,181,180,179,178,177,176,175,174,173,172,171,170,169,168,167,166,165,164,163,162,161,160,159,158,157,156,155,154,153,152,151,150,149,148,147,146,145,144,143,142,141,140,139,138,137,136,135,134,133,132,131,130,129,128}
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	140 };
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	141
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	142
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	143 #ifndef MIN_MACRO
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	144 #define MIN_MACRO(a,b) (((a)<(b))?(a):(b))
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	145 #endif
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	146
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	147 #ifndef MAX_MACRO
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	148 #define MAX_MACRO(a,b) (((a)>(b))?(a):(b))
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	149 #endif
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	150
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	151 #define POSITIVE_ULAW_ZERO 0xff
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	152 #define NEGATIVE_ULAW_ZERO 0x7f
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	153
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	154 #define CAPMAXSCHAR(x) ((x > 127) ? 127 : x)
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	155 #define CAPMAXUCHAR(x) ((x > 255) ? 255 : x)
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	156 #define CAPMAXSHORT(x) ((x > 32767) ? 32767 : x)
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	157 #define CAPMAXUSHORT(x) ((x > 65535) ? 65535 : x)
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	158
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	159 #define UNDEFINED_UINT -1
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	160 #define DEFAULT_BLOCK_SIZE 256
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	161 #define DEFAULT_V0NMEAN 0
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	162 #define DEFAULT_V2NMEAN 4
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	163 #define DEFAULT_MAXNLPC 0
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	164 #define DEFAULT_NCHAN 1
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	165 #define DEFAULT_NSKIP 0
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	166 #define DEFAULT_NDISCARD 0
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	167 #define NBITPERLONG 32
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	168 #define DEFAULT_MINSNR 256
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	169 #define DEFAULT_QUANTERROR 0
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	170 #define MINBITRATE 2.5
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	171
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	172 #define MEAN_VERSION0 0
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	173 #define MEAN_VERSION2 4
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	174
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	175 #define SHN_FN_DIFF0 0
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	176 #define SHN_FN_DIFF1 1
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	177 #define SHN_FN_DIFF2 2
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	178 #define SHN_FN_DIFF3 3
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	179 #define SHN_FN_QUIT 4
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	180 #define SHN_FN_BLOCKSIZE 5
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	181 #define SHN_FN_BITSHIFT 6
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	182 #define SHN_FN_QLPC 7
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	183 #define SHN_FN_ZERO 8
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	184 #define SHN_FN_VERBATIM 9
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	185
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	186 #define SHN_TYPE_AU1 0
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	187 #define SHN_TYPE_S8 1
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	188 #define SHN_TYPE_U8 2
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	189 #define SHN_TYPE_S16HL 3
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	190 #define SHN_TYPE_U16HL 4
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	191 #define SHN_TYPE_S16LH 5
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	192 #define SHN_TYPE_U16LH 6
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	193 #define SHN_TYPE_ULAW 7
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	194 #define SHN_TYPE_AU2 8
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	195 #define SHN_TYPE_AU3 9
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	196 #define SHN_TYPE_ALAW 10
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	197 #define SHN_TYPE_RIFF_WAVE 11
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	198 #define SHN_TYPE_EOF 12
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	199 #define SHN_TYPE_GENERIC_ULAW 128
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	200 #define SHN_TYPE_GENERIC_ALAW 129
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	201
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	202 #define SHN_FNSIZE 2
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	203 #define SHN_CHANNELSIZE 0
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	204 #define SHN_TYPESIZE 4
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	205 #define SHN_ULONGSIZE 2
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	206 #define SHN_NSKIPSIZE 1
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	207 #define SHN_LPCQSIZE 2
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	208 #define SHN_LPCQUANT 5
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	209 #define SHN_XBYTESIZE 7
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	210 #define SHN_VERBATIM_CKSIZE_SIZE 5
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	211 #define SHN_VERBATIM_BYTE_SIZE 8
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	212 #define SHN_ENERGYSIZE 3
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	213 #define SHN_BITSHIFTSIZE 2
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	214
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	215 #define SHN_LPCQOFFSET_VER2 (1 << SHN_LPCQUANT)
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	216
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	217
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	218 #define MAGIC_NUM 0x676B6A61 /* looks like "ajkg" as chars. */
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	219
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	220 #ifndef M_LN2
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	221 #define M_LN2 0.69314718055994530942
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	222 #endif
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	223
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	224 #ifndef M_PI
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	225 #define M_PI 3.14159265358979323846
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	226 #endif
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	227
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	228
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	229 static int word_get(shn_t shn, SDL_RWops rw, Uint32 *word)
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	230 {
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	231 if (shn->nbyteget < 4)
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	232 {
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	233 shn->nbyteget += SDL_RWread(rw, shn->getbuf, 1, SHN_BUFSIZ);
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	234 BAIL_IF_MACRO(shn->nbyteget < 4, NULL, 0);
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	235 shn->getbufp = shn->getbuf;
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	236 } /* if */
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	237
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	238 if (word != NULL)
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	239 {
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	240 *word = (((Sint32) shn->getbufp[0]) << 24) \|
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	241 (((Sint32) shn->getbufp[1]) << 16) \|
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	242 (((Sint32) shn->getbufp[2]) << 8) \|
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	243 (((Sint32) shn->getbufp[3]) );
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	244 } /* if */
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	245
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	246 shn->getbufp += 4;
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	247 shn->nbyteget -= 4;
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	248
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	249 return(1);
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	250 } /* word_get */
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	251
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	252
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	253 static int uvar_get(int nbin, shn_t shn, SDL_RWops rw, Sint32 *word)
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	254 {
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	255 Sint32 result;
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	256
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	257 if (shn->nbitget == 0)
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	258 {
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	259 BAIL_IF_MACRO(!word_get(shn, rw, &shn->gbuffer), NULL, 0);
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	260 shn->nbitget = 32;
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	261 } /* if */
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	262
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	263 for (result = 0; !(shn->gbuffer & (1L << --shn->nbitget)); result++)
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	264 {
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	265 if (shn->nbitget == 0)
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	266 {
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	267 BAIL_IF_MACRO(!word_get(shn, rw, &shn->gbuffer), NULL, 0);
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	268 shn->nbitget = 32;
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	269 } /* if */
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	270 } /* for */
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	271
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	272 while (nbin != 0)
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	273 {
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	274 if (shn->nbitget >= nbin)
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	275 {
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	276 result = ( (result << nbin) \|
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	277 ((shn->gbuffer >> (shn->nbitget - nbin)) &
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	278 mask_table[nbin]) );
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	279 shn->nbitget -= nbin;
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	280 break;
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	281 } /* if */
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	282 else
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	283 {
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	284 result = (result << shn->nbitget) \|
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	285 (shn->gbuffer & mask_table[shn->nbitget]);
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	286 BAIL_IF_MACRO(!word_get(shn, rw, &shn->gbuffer), NULL, 0);
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	287 nbin -= shn->nbitget;
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	288 shn->nbitget = 32;
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	289 } /* else */
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	290 } /* while */
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	291
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	292 if (word != NULL)
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	293 *word = result;
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	294
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	295 return(1);
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	296 } /* uvar_get */
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	297
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	298
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	299 static int var_get(int nbin, shn_t shn, SDL_RWops rw, Sint32 *word)
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	300 {
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	301 BAIL_IF_MACRO(!uvar_get(nbin + 1, shn, rw, word), NULL, 0);
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	302
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	303 if ((*word) & 1)
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	304 word = (Sint32) ~((word) >> 1);
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	305 else
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	306 word = (Sint32) ((word) >> 1);
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	307
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	308 return(1);
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	309 } /* var_get */
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	310
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	311
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	312 static int ulong_get(shn_t shn, SDL_RWops rw, Sint32 *word)
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	313 {
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	314 Sint32 nbit;
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	315 Sint32 retval;
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	316 BAIL_IF_MACRO(!uvar_get(SHN_ULONGSIZE, shn, rw, &nbit), NULL, 0);
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	317 BAIL_IF_MACRO(!uvar_get(nbit, shn, rw, &retval), NULL, 0);
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	318
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	319 if (word != NULL)
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	320 *word = retval;
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	321
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	322 return(1);
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	323 } /* ulong_get */
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	324
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	325
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	326 static inline int uint_get(int nbit, shn_t shn, SDL_RWops rw, Sint32 *word)
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	327 {
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	328 return((shn->version == 0) ?
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	329 uvar_get(nbit, shn, rw, word) :
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	330 ulong_get(shn, rw, word));
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	331 } /* uint_get */
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	332
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	333
86 155ab2a427ca Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	334 static int SHN_init(void)
155ab2a427ca Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	335 {
155ab2a427ca Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	336 return(1); /* initialization always successful. */
155ab2a427ca Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	337 } /* SHN_init */
155ab2a427ca Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	338
155ab2a427ca Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	339
155ab2a427ca Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	340 static void SHN_quit(void)
155ab2a427ca Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	341 {
155ab2a427ca Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	342 /* it's a no-op. */
155ab2a427ca Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	343 } /* SHN_quit */
155ab2a427ca Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	344
155ab2a427ca Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	345
155ab2a427ca Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	346 /*
155ab2a427ca Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	347 * Look through the whole file for a SHN magic number. This is costly, so
155ab2a427ca Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	348 * it should only be done if the user SWEARS they have a Shorten stream...
155ab2a427ca Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	349 */
155ab2a427ca Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	350 static inline int extended_shn_magic_search(Sound_Sample *sample)
155ab2a427ca Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	351 {
155ab2a427ca Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	352 SDL_RWops rw = ((Sound_SampleInternal ) sample->opaque)->rw;
155ab2a427ca Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	353 Uint32 word = 0;
155ab2a427ca Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	354 Uint8 ch;
155ab2a427ca Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	355
155ab2a427ca Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	356 while (1)
155ab2a427ca Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	357 {
155ab2a427ca Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	358 BAIL_IF_MACRO(SDL_RWread(rw, &ch, sizeof (ch), 1) != 1, NULL, -1);
155ab2a427ca Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	359 word = ((word << 8) & 0xFFFFFF00) \| ch;
101 c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	360 if (SDL_SwapBE32(word) == MAGIC_NUM)
86 155ab2a427ca Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	361 {
155ab2a427ca Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	362 BAIL_IF_MACRO(SDL_RWread(rw, &ch, sizeof (ch), 1) != 1, NULL, -1);
155ab2a427ca Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	363 return((int) ch);
155ab2a427ca Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	364 } /* if */
155ab2a427ca Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	365 } /* while */
155ab2a427ca Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	366
155ab2a427ca Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	367 return((int) ch);
155ab2a427ca Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	368 } /* extended_shn_magic_search */
155ab2a427ca Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	369
155ab2a427ca Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	370
155ab2a427ca Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	371 /* look for the magic number in the RWops and see what kind of file this is. */
101 c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	372 static inline int determine_shn_version(Sound_Sample sample, const char ext)
86 155ab2a427ca Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	373 {
155ab2a427ca Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	374 SDL_RWops rw = ((Sound_SampleInternal ) sample->opaque)->rw;
155ab2a427ca Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	375 Uint32 magic;
155ab2a427ca Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	376 Uint8 ch;
155ab2a427ca Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	377
155ab2a427ca Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	378 /*
155ab2a427ca Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	379 * Apparently the magic number can start at any byte offset in the file,
155ab2a427ca Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	380 * and we should just discard prior data, but I'm going to restrict it
155ab2a427ca Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	381 * to offset zero for now, so we don't chug down every file that might
155ab2a427ca Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	382 * happen to pass through here. If the extension is explicitly "SHN", we
155ab2a427ca Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	383 * check the whole stream, though.
155ab2a427ca Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	384 */
155ab2a427ca Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	385
155ab2a427ca Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	386 if (__Sound_strcasecmp(ext, "shn") == 0)
101 c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	387 return(extended_shn_magic_search(sample));
86 155ab2a427ca Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	388
155ab2a427ca Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	389 BAIL_IF_MACRO(SDL_RWread(rw, &magic, sizeof (magic), 1) != 1, NULL, -1);
155ab2a427ca Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	390 BAIL_IF_MACRO(SDL_SwapLE32(magic) != MAGIC_NUM, "SHN: Not a SHN file", -1);
155ab2a427ca Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	391 BAIL_IF_MACRO(SDL_RWread(rw, &ch, sizeof (ch), 1) != 1, NULL, -1);
155ab2a427ca Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	392 BAIL_IF_MACRO(ch > 3, "SHN: Unsupported file version", -1);
155ab2a427ca Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	393
155ab2a427ca Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	394 return((int) ch);
155ab2a427ca Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	395 } /* determine_shn_version */
155ab2a427ca Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	396
155ab2a427ca Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	397
101 c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	398 static int init_shn_offset(Sint32 **offset, int nchan, int nblock, int ftype)
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	399 {
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	400 Sint32 mean = 0;
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	401 int chan;
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	402
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	403 switch (ftype)
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	404 {
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	405 case SHN_TYPE_AU1:
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	406 case SHN_TYPE_S8:
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	407 case SHN_TYPE_S16HL:
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	408 case SHN_TYPE_S16LH:
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	409 case SHN_TYPE_ULAW:
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	410 case SHN_TYPE_AU2:
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	411 case SHN_TYPE_AU3:
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	412 case SHN_TYPE_ALAW:
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	413 mean = 0;
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	414 break;
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	415 case SHN_TYPE_U8:
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	416 mean = 0x80;
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	417 break;
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	418 case SHN_TYPE_U16HL:
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	419 case SHN_TYPE_U16LH:
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	420 mean = 0x8000;
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	421 break;
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	422 default:
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	423 BAIL_MACRO("SHN: unknown file type", 0);
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	424 } /* switch */
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	425
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	426 for(chan = 0; chan < nchan; chan++)
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	427 {
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	428 int i;
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	429 for(i = 0; i < nblock; i++)
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	430 offset[chan][i] = mean;
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	431 } /* for */
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	432 } /* init_shn_offset */
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	433
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	434
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	435 static inline Uint16 cvt_shnftype_to_sdlfmt(Sint16 shntype)
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	436 {
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	437 switch (shntype)
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	438 {
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	439 case SHN_TYPE_S8:
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	440 return(AUDIO_S8);
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	441
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	442 case SHN_TYPE_ALAW:
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	443 case SHN_TYPE_ULAW:
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	444 case SHN_TYPE_AU1:
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	445 case SHN_TYPE_AU2:
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	446 case SHN_TYPE_AU3:
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	447 case SHN_TYPE_U8:
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	448 return(AUDIO_U8);
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	449
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	450 case SHN_TYPE_S16HL:
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	451 return(AUDIO_S16MSB);
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	452
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	453 case SHN_TYPE_S16LH:
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	454 return(AUDIO_S16LSB);
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	455
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	456 case SHN_TYPE_U16HL:
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	457 return(AUDIO_U16MSB);
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	458
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	459 case SHN_TYPE_U16LH:
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	460 return(AUDIO_U16LSB);
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	461 } /* switch */
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	462
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	463 return(0);
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	464 } /* cvt_shnftype_to_sdlfmt */
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	465
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	466
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	467 static inline int skip_bits(shn_t shn, SDL_RWops rw)
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	468 {
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	469 int i;
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	470 Sint32 skip;
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	471 Sint32 trash;
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	472
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	473 BAIL_IF_MACRO(!uint_get(SHN_NSKIPSIZE, shn, rw, &skip), NULL, 0);
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	474 for(i = 0; i < skip; i++)
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	475 {
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	476 BAIL_IF_MACRO(!uint_get(SHN_XBYTESIZE, shn, rw, &trash), NULL, 0);
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	477 } /* for */
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	478
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	479 return(1);
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	480 } /* skip_bits */
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	481
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	482
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	483 static Sint32 **shn_long2d(Uint32 n0, Uint32 n1)
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	484 {
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	485 Sint32 **array0;
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	486 Uint32 size = (n0 * sizeof (Sint32 )) + (n0 n1 * sizeof (Sint32));
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	487
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	488 array0 = (Sint32 **) malloc(size);
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	489 if (array0 != NULL)
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	490 {
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	491 int i;
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	492 Sint32 array1 = (Sint32 ) (array0 + n0);
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	493 for(i = 0; i < n0; i++)
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	494 array0[i] = array1 + (i * n1);
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	495 } /* if */
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	496
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	497 return(array0);
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	498 } /* shn_long2d */
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	499
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	500 #define riffID 0x46464952 /* "RIFF", in ascii. */
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	501 #define waveID 0x45564157 /* "WAVE", in ascii. */
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	502 #define fmtID 0x20746D66 /* "fmt ", in ascii. */
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	503 #define dataID 0x61746164 /* "data", in ascii. */
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	504
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	505 static int verb_ReadLE32(shn_t shn, SDL_RWops rw, Uint32 *word)
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	506 {
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	507 int i;
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	508 Uint8 chars[4];
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	509 Sint32 byte;
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	510
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	511 for (i = 0; i < 4; i++)
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	512 {
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	513 if (!uvar_get(SHN_VERBATIM_BYTE_SIZE, shn, rw, &byte))
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	514 return(0);
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	515 chars[i] = (Uint8) byte;
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	516 } /* for */
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	517
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	518 memcpy(word, chars, sizeof (*word));
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	519 word = SDL_SwapLE32(word);
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	520
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	521 return(1);
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	522 } /* verb_ReadLE32 */
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	523
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	524
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	525 static int verb_ReadLE16(shn_t shn, SDL_RWops rw, Uint16 *word)
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	526 {
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	527 int i;
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	528 Uint8 chars[2];
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	529 Sint32 byte;
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	530
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	531 for (i = 0; i < 2; i++)
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	532 {
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	533 if (!uvar_get(SHN_VERBATIM_BYTE_SIZE, shn, rw, &byte))
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	534 return(0);
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	535 chars[i] = (Uint8) byte;
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	536 } /* for */
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	537
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	538 memcpy(word, chars, sizeof (*word));
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	539 word = SDL_SwapLE16(word);
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	540
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	541 return(1);
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	542 } /* verb_ReadLE16 */
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	543
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	544
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	545 static inline int parse_riff_header(shn_t shn, Sound_Sample sample)
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	546 {
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	547 Sound_SampleInternal internal = (Sound_SampleInternal ) sample->opaque;
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	548 SDL_RWops *rw = internal->rw;
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	549 Uint16 u16;
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	550 Uint32 u32;
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	551 Sint32 cklen;
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	552
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	553 BAIL_IF_MACRO(!uvar_get(SHN_VERBATIM_CKSIZE_SIZE, shn, rw, &cklen), NULL, 0);
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	554
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	555 BAIL_IF_MACRO(!verb_ReadLE32(shn, rw, &u32), NULL, 0); /* RIFF header */
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	556 BAIL_IF_MACRO(u32 != riffID, "SHN: No RIFF header.", 0);
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	557 BAIL_IF_MACRO(!verb_ReadLE32(shn, rw, &u32), NULL, 0); /* length */
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	558
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	559 BAIL_IF_MACRO(!verb_ReadLE32(shn, rw, &u32), NULL, 0); /* WAVE header */
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	560 BAIL_IF_MACRO(u32 != waveID, "SHN: No WAVE header.", 0);
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	561
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	562 BAIL_IF_MACRO(!verb_ReadLE32(shn, rw, &u32), NULL, 0); /* 'fmt ' header */
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	563 BAIL_IF_MACRO(u32 != fmtID, "SHN: No 'fmt ' header.", 0);
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	564
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	565 BAIL_IF_MACRO(!verb_ReadLE32(shn, rw, &u32), NULL, 0); /* chunksize */
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	566 BAIL_IF_MACRO(!verb_ReadLE16(shn, rw, &u16), NULL, 0); /* format */
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	567 BAIL_IF_MACRO(!verb_ReadLE16(shn, rw, &u16), NULL, 0); /* channels */
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	568 sample->actual.channels = u16;
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	569 BAIL_IF_MACRO(!verb_ReadLE32(shn, rw, &u32), NULL, 0); /* sample rate */
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	570 sample->actual.rate = u32;
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	571
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	572 BAIL_IF_MACRO(!verb_ReadLE32(shn, rw, &u32), NULL, 0); /* bytespersec */
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	573 BAIL_IF_MACRO(!verb_ReadLE16(shn, rw, &u16), NULL, 0); /* blockalign */
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	574 BAIL_IF_MACRO(!verb_ReadLE16(shn, rw, &u16), NULL, 0); /* bitspersample */
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	575
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	576 BAIL_IF_MACRO(!verb_ReadLE32(shn, rw, &u32), NULL, 0); /* 'data' header */
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	577 BAIL_IF_MACRO(u32 != dataID, "SHN: No 'data' header.", 0);
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	578 BAIL_IF_MACRO(!verb_ReadLE32(shn, rw, &u32), NULL, 0); /* chunksize */
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	579
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	580 return(1);
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	581 } /* parse_riff_header */
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	582
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	583
86 155ab2a427ca Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	584 static int SHN_open(Sound_Sample sample, const char ext)
155ab2a427ca Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	585 {
155ab2a427ca Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	586 Sound_SampleInternal internal = (Sound_SampleInternal ) sample->opaque;
155ab2a427ca Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	587 SDL_RWops *rw = internal->rw;
101 c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	588 shn_t _shn;
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	589 shn_t shn = &_shn; / malloc and copy later. */
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	590 Sint32 cmd;
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	591 Sint32 chan;
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	592
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	593 memset(shn, '\0', sizeof (shn_t));
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	594 shn->getbufp = shn->getbuf = (Uint8 *) malloc(SHN_BUFSIZ);
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	595 shn->datatype = SHN_TYPE_EOF;
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	596 shn->nchan = DEFAULT_NCHAN;
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	597 shn->blocksize = DEFAULT_BLOCK_SIZE;
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	598 shn->maxnlpc = DEFAULT_MAXNLPC;
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	599 shn->nmean = UNDEFINED_UINT;
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	600 shn->version = determine_shn_version(sample, ext);
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	601
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	602 if (shn->version == -1) goto shn_open_puke;
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	603 if (!uint_get(SHN_TYPESIZE, shn, rw, &shn->datatype)) goto shn_open_puke;
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	604 if (!uint_get(SHN_CHANNELSIZE, shn, rw, &shn->nchan)) goto shn_open_puke;
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	605
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	606 sample->actual.format = cvt_shnftype_to_sdlfmt(shn->datatype);
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	607 if (sample->actual.format == 0)
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	608 {
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	609 SDL_SetError(ERR_UNSUPPORTED_FORMAT);
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	610 goto shn_open_puke;
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	611 } /* if */
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	612
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	613 if (shn->version > 0)
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	614 {
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	615 int rc = uint_get((int) (log((double) DEFAULT_BLOCK_SIZE) / M_LN2),
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	616 shn, rw, &shn->blocksize);
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	617 if (!rc) goto shn_open_puke;;
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	618 if (!uint_get(SHN_LPCQSIZE, shn, rw, &shn->maxnlpc)) goto shn_open_puke;
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	619 if (!uint_get(0, shn, rw, &shn->nmean)) goto shn_open_puke;
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	620 if (!skip_bits(shn, rw)) goto shn_open_puke;
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	621 } /* else */
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	622
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	623 shn->nwrap = (shn->maxnlpc > 3) ? shn->maxnlpc : 3;
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	624
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	625 /* grab some space for the input buffer */
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	626 shn->buffer = shn_long2d((Uint32) shn->nchan, shn->blocksize + shn->nwrap);
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	627 shn->offset = shn_long2d((Uint32) shn->nchan, MAX_MACRO(1, shn->nmean));
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	628
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	629 for (chan = 0; chan < shn->nchan; chan++)
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	630 {
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	631 int i;
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	632 for(i = 0; i < shn->nwrap; i++)
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	633 shn->buffer[chan][i] = 0;
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	634 shn->buffer[chan] += shn->nwrap;
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	635 } /* for */
86 155ab2a427ca Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	636
101 c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	637 if (shn->maxnlpc > 0)
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	638 {
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	639 shn->qlpc = (int ) malloc((Uint32) (shn->maxnlpc sizeof (Sint32)));
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	640 if (shn->qlpc == NULL)
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	641 {
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	642 Sound_SetError(ERR_OUT_OF_MEMORY);
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	643 goto shn_open_puke;
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	644 } /* if */
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	645 } /* if */
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	646
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	647 if (shn->version > 1)
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	648 shn->lpcqoffset = SHN_LPCQOFFSET_VER2;
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	649
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	650 init_shn_offset(shn->offset, shn->nchan,
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	651 MAX_MACRO(1, shn->nmean), shn->datatype);
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	652
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	653 if ( (!uvar_get(SHN_FNSIZE, shn, rw, &cmd)) \|\|
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	654 (cmd != SHN_FN_VERBATIM) \|\|
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	655 (!parse_riff_header(shn, sample)) )
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	656 {
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	657 if (cmd != SHN_FN_VERBATIM)
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	658 Sound_SetError("SHN: Expected VERBATIM function");
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	659
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	660 goto shn_open_puke;
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	661 return(0);
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	662 } /* if */
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	663
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	664 shn = (shn_t *) malloc(sizeof (shn_t));
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	665 if (shn == NULL)
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	666 {
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	667 Sound_SetError(ERR_OUT_OF_MEMORY);
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	668 goto shn_open_puke;
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	669 } /* if */
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	670
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	671 memcpy(shn, &_shn, sizeof (shn_t));
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	672 internal->decoder_private = shn;
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	673
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	674 SNDDBG(("SHN: Accepting data stream.\n"));
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	675 sample->flags = SOUND_SAMPLEFLAG_NONE;
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	676 return(1); /* we'll handle this data. */
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	677
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	678 shn_open_puke:
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	679 if (_shn.getbuf)
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	680 free(_shn.getbuf);
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	681 if (_shn.buffer != NULL)
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	682 free(_shn.buffer);
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	683 if (_shn.offset != NULL)
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	684 free(_shn.offset);
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	685 if (_shn.qlpc != NULL)
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	686 free(_shn.qlpc);
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	687
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	688 return(0);
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	689 } /* SHN_open */
86 155ab2a427ca Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	690
155ab2a427ca Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	691
101 c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	692 void fix_bitshift(Sint32 *buffer, int nitem, int bitshift, int ftype)
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	693 {
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	694 int i;
86 155ab2a427ca Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	695
101 c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	696 if (ftype == SHN_TYPE_AU1)
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	697 {
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	698 for (i = 0; i < nitem; i++)
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	699 buffer[i] = ulaw_outward[bitshift][buffer[i] + 128];
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	700 } /* if */
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	701 else if (ftype == SHN_TYPE_AU2)
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	702 {
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	703 for(i = 0; i < nitem; i++)
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	704 {
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	705 if (buffer[i] >= 0)
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	706 buffer[i] = ulaw_outward[bitshift][buffer[i] + 128];
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	707 else if (buffer[i] == -1)
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	708 buffer[i] = NEGATIVE_ULAW_ZERO;
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	709 else
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	710 buffer[i] = ulaw_outward[bitshift][buffer[i] + 129];
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	711 } /* for */
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	712 } /* else if */
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	713 else
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	714 {
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	715 if (bitshift != 0)
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	716 {
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	717 for(i = 0; i < nitem; i++)
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	718 buffer[i] <<= bitshift;
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	719 } /* if */
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	720 } /* else */
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	721 } /* fix_bitshift */
86 155ab2a427ca Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	722
155ab2a427ca Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	723
155ab2a427ca Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	724 static void SHN_close(Sound_Sample *sample)
155ab2a427ca Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	725 {
155ab2a427ca Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	726 Sound_SampleInternal internal = (Sound_SampleInternal ) sample->opaque;
101 c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	727 shn_t shn = (shn_t ) internal->decoder_private;
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	728
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	729 if (shn->qlpc != NULL)
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	730 free(shn->qlpc);
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	731
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	732 if (shn->backBuffer != NULL)
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	733 free(shn->backBuffer);
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	734
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	735 if (shn->offset != NULL)
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	736 free(shn->offset);
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	737
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	738 if (shn->buffer != NULL)
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	739 free(shn->buffer);
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	740
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	741 if (shn->getbuf != NULL)
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	742 free(shn->getbuf);
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	743
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	744 free(shn);
86 155ab2a427ca Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	745 } /* SHN_close */
155ab2a427ca Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	746
155ab2a427ca Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	747
101 c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	748 /* xLaw conversions... */
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	749
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	750 /* adapted by ajr for int input */
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	751 static Uint8 Slinear2ulaw(int sample)
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	752 {
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	753 /*
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	754 ** This routine converts from linear to ulaw.
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	755 **
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	756 ** Craig Reese: IDA/Supercomputing Research Center
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	757 ** Joe Campbell: Department of Defense
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	758 ** 29 September 1989
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	759 **
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	760 ** References:
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	761 ** 1) CCITT Recommendation G.711 (very difficult to follow)
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	762 ** 2) "A New Digital Technique for Implementation of Any
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	763 ** Continuous PCM Companding Law," Villeret, Michel,
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	764 ** et al. 1973 IEEE Int. Conf. on Communications, Vol 1,
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	765 ** 1973, pg. 11.12-11.17
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	766 ** 3) MIL-STD-188-113,"Interoperability and Performance Standards
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	767 ** for Analog-to_Digital Conversion Techniques,"
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	768 ** 17 February 1987
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	769 **
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	770 ** Input: Signed 16 bit linear sample
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	771 ** Output: 8 bit ulaw sample
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	772 */
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	773
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	774 #define BIAS 0x84 /* define the add-in bias for 16 bit samples */
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	775 #define CLIP 32635
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	776
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	777 int sign, exponent, mantissa;
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	778 Uint8 ulawbyte;
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	779 static const int exp_lut[256] = {0,0,1,1,2,2,2,2,3,3,3,3,3,3,3,3,
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	780 4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	781 5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	782 5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	783 6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	784 6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	785 6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	786 6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	787 7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	788 7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	789 7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	790 7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	791 7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	792 7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	793 7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	794 7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7};
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	795
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	796 /* Get the sample into sign-magnitude. */
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	797 if (sample >= 0)
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	798 sign = 0;
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	799 else
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	800 {
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	801 sign = 0x80;
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	802 sample = -sample;
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	803 } /* else */
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	804
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	805 /* clip the magnitude */
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	806 if (sample > CLIP)
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	807 sample = CLIP;
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	808
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	809 /* Convert from 16 bit linear to ulaw. */
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	810 sample = sample + BIAS;
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	811 exponent = exp_lut[( sample >> 7 ) & 0xFF];
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	812 mantissa = (sample >> (exponent + 3)) & 0x0F;
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	813 ulawbyte = ~(sign \| (exponent << 4) \| mantissa);
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	814
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	815 return(ulawbyte);
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	816 } /* Slinear2ulaw */
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	817
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	818
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	819 /* this is derived from the Sun code - it is a bit simpler and has int input */
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	820 #define QUANT_MASK (0xf) /* Quantization field mask. */
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	821 #define NSEGS (8) /* Number of A-law segments. */
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	822 #define SEG_SHIFT (4) /* Left shift for segment number. */
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	823
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	824
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	825 static Uint8 Slinear2alaw(Sint32 linear)
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	826 {
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	827 int seg;
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	828 Uint8 aval, mask;
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	829 static const Sint32 seg_aend[NSEGS] =
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	830 {
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	831 0x1f,0x3f,0x7f,0xff,0x1ff,0x3ff,0x7ff,0xfff
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	832 };
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	833
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	834 linear >>= 3;
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	835 if(linear >= 0)
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	836 mask = 0xd5; /* sign (7th) bit = 1 */
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	837 else
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	838 {
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	839 mask = 0x55; /* sign bit = 0 */
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	840 linear = -linear - 1;
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	841 } /* else */
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	842
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	843 /* Convert the scaled magnitude to segment number. */
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	844 for (seg = 0; (seg < NSEGS) && (linear > seg_aend[seg]); seg++);
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	845
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	846 /* Combine the sign, segment, and quantization bits. */
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	847 if (seg >= NSEGS) /* out of range, return maximum value. */
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	848 return((Uint8) (0x7F ^ mask));
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	849
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	850 aval = (Uint8) seg << SEG_SHIFT;
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	851 if (seg < 2)
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	852 aval \|= (linear >> 1) & QUANT_MASK;
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	853 else
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	854 aval \|= (linear >> seg) & QUANT_MASK;
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	855
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	856 return (aval ^ mask);
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	857 } /* Slinear2alaw */
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	858
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	859
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	860 /* convert from signed ints to a given type and write */
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	861 static Uint32 put_to_buffers(Sound_Sample *sample, Uint32 bw)
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	862 {
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	863 Sound_SampleInternal internal = (Sound_SampleInternal ) sample->opaque;
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	864 shn_t shn = (shn_t ) internal->decoder_private;
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	865 int i, chan;
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	866 Sint32 *data0 = shn->buffer[0];
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	867 Sint32 nitem = shn->blocksize;
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	868 int datasize = ((sample->actual.format & 0xFF) / 8);
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	869 Uint32 bsiz = shn->nchan * nitem * datasize;
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	870
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	871 assert(shn->backBufLeft == 0);
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	872
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	873 if (shn->backBufferSize < bsiz)
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	874 {
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	875 void *rc = realloc(shn->backBuffer, bsiz);
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	876 if (rc == NULL)
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	877 {
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	878 sample->flags \|= SOUND_SAMPLEFLAG_ERROR;
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	879 BAIL_MACRO(ERR_OUT_OF_MEMORY, 0);
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	880 } /* if */
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	881 shn->backBuffer = (Uint8 *) rc;
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	882 shn->backBufferSize = bsiz;
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	883 } /* if */
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	884
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	885 switch (shn->datatype)
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	886 {
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	887 case SHN_TYPE_AU1: /* leave the conversion to fix_bitshift() */
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	888 case SHN_TYPE_AU2:
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	889 {
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	890 Uint8 *writebufp = shn->backBuffer;
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	891 if (shn->nchan == 1)
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	892 {
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	893 for (i = 0; i < nitem; i++)
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	894 *writebufp++ = data0[i];
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	895 } /* if */
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	896 else
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	897 {
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	898 for (i = 0; i < nitem; i++)
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	899 {
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	900 for (chan = 0; chan < shn->nchan; chan++)
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	901 *writebufp++ = shn->buffer[chan][i];
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	902 } /* for */
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	903 } /* else */
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	904 } /* case */
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	905 break;
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	906
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	907 case SHN_TYPE_U8:
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	908 {
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	909 Uint8 *writebufp = shn->backBuffer;
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	910 if (shn->nchan == 1)
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	911 {
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	912 for (i = 0; i < nitem; i++)
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	913 *writebufp++ = CAPMAXUCHAR(data0[i]);
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	914 } /* if */
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	915 else
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	916 {
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	917 for (i = 0; i < nitem; i++)
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	918 {
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	919 for (chan = 0; chan < shn->nchan; chan++)
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	920 *writebufp++ = CAPMAXUCHAR(shn->buffer[chan][i]);
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	921 } /* for */
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	922 } /* else */
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	923 } /* case */
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	924 break;
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	925
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	926 case SHN_TYPE_S8:
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	927 {
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	928 Sint8 writebufp = (Sint8 ) shn->backBuffer;
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	929 if (shn->nchan == 1)
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	930 {
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	931 for(i = 0; i < nitem; i++)
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	932 *writebufp++ = CAPMAXSCHAR(data0[i]);
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	933 } /* if */
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	934 else
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	935 {
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	936 for(i = 0; i < nitem; i++)
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	937 {
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	938 for(chan = 0; chan < shn->nchan; chan++)
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	939 *writebufp++ = CAPMAXSCHAR(shn->buffer[chan][i]);
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	940 } /* for */
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	941 } /* else */
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	942 } /* case */
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	943 break;
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	944
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	945 case SHN_TYPE_S16HL:
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	946 case SHN_TYPE_S16LH:
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	947 {
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	948 Sint16 writebufp = (Sint16 ) shn->backBuffer;
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	949 if (shn->nchan == 1)
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	950 {
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	951 for (i = 0; i < nitem; i++)
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	952 *writebufp++ = CAPMAXSHORT(data0[i]);
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	953 } /* if */
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	954 else
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	955 {
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	956 for (i = 0; i < nitem; i++)
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	957 {
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	958 for (chan = 0; chan < shn->nchan; chan++)
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	959 *writebufp++ = CAPMAXSHORT(shn->buffer[chan][i]);
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	960 } /* for */
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	961 } /* else */
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	962 } /* case */
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	963 break;
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	964
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	965 case SHN_TYPE_U16HL:
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	966 case SHN_TYPE_U16LH:
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	967 {
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	968 Uint16 writebufp = (Uint16 ) shn->backBuffer;
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	969 if (shn->nchan == 1)
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	970 {
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	971 for (i = 0; i < nitem; i++)
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	972 *writebufp++ = CAPMAXUSHORT(data0[i]);
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	973 } /* if */
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	974 else
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	975 {
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	976 for (i = 0; i < nitem; i++)
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	977 {
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	978 for (chan = 0; chan < shn->nchan; chan++)
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	979 *writebufp++ = CAPMAXUSHORT(shn->buffer[chan][i]);
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	980 } /* for */
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	981 } /* else */
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	982 } /* case */
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	983 break;
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	984
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	985 case SHN_TYPE_ULAW:
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	986 {
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	987 Uint8 *writebufp = shn->backBuffer;
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	988 if (shn->nchan == 1)
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	989 {
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	990 for(i = 0; i < nitem; i++)
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	991 *writebufp++ = Slinear2ulaw(CAPMAXSHORT((data0[i] << 3)));
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	992 } /* if */
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	993 else
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	994 {
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	995 for(i = 0; i < nitem; i++)
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	996 {
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	997 for(chan = 0; chan < shn->nchan; chan++)
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	998 *writebufp++ = Slinear2ulaw(CAPMAXSHORT((shn->buffer[chan][i] << 3)));
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	999 } /* for */
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	1000 } /* else */
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	1001 } /* case */
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	1002 break;
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	1003
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	1004 case SHN_TYPE_AU3:
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	1005 {
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	1006 Uint8 *writebufp = shn->backBuffer;
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	1007 if (shn->nchan == 1)
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	1008 {
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	1009 for (i = 0; i < nitem; i++)
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	1010 if(data0[i] < 0)
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	1011 *writebufp++ = (127 - data0[i]) ^ 0xd5;
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	1012 else
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	1013 *writebufp++ = (data0[i] + 128) ^ 0x55;
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	1014 } /* if */
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	1015 else
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	1016 {
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	1017 for (i = 0; i < nitem; i++)
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	1018 {
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	1019 for (chan = 0; chan < shn->nchan; chan++)
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	1020 {
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	1021 if (shn->buffer[chan][i] < 0)
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	1022 *writebufp++ = (127 - shn->buffer[chan][i]) ^ 0xd5;
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	1023 else
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	1024 *writebufp++ = (shn->buffer[chan][i] + 128) ^ 0x55;
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	1025 } /* for */
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	1026 } /* for */
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	1027 } /* else */
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	1028 } /* case */
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	1029 break;
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	1030
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	1031 case SHN_TYPE_ALAW:
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	1032 {
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	1033 Uint8 *writebufp = shn->backBuffer;
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	1034 if (shn->nchan == 1)
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	1035 {
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	1036 for (i = 0; i < nitem; i++)
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	1037 *writebufp++ = Slinear2alaw(CAPMAXSHORT((data0[i] << 3)));
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	1038 } /* if */
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	1039 else
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	1040 {
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	1041 for (i = 0; i < nitem; i++)
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	1042 {
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	1043 for(chan = 0; chan < shn->nchan; chan++)
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	1044 *writebufp++ = Slinear2alaw(CAPMAXSHORT((shn->buffer[chan][i] << 3)));
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	1045 } /* for */
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	1046 }/* else */
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	1047 } /* case */
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	1048 break;
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	1049 } /* switch */
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	1050
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	1051 i = MIN_MACRO(internal->buffer_size - bw, bsiz);
126 8a5a1c61d3c6 Fix for MS Visual C. Ryan C. Gordon <icculus@icculus.org> parents: 114 diff changeset	1052 memcpy((char *)internal->buffer + bw, shn->backBuffer, i);
101 c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	1053 shn->backBufLeft = bsiz - i;
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	1054 memcpy(shn->backBuffer, shn->backBuffer + i, shn->backBufLeft);
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	1055 return(i);
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	1056 } /* put_to_buffers */
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	1057
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	1058
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	1059 #define ROUNDEDSHIFTDOWN(x, n) (((n) == 0) ? (x) : ((x) >> ((n) - 1)) >> 1)
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	1060
86 155ab2a427ca Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	1061 static Uint32 SHN_read(Sound_Sample *sample)
155ab2a427ca Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	1062 {
101 c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	1063 Uint32 retval = 0;
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	1064 Sint32 chan = 0;
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	1065 Uint32 cpyBytes = 0;
86 155ab2a427ca Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	1066 Sound_SampleInternal internal = (Sound_SampleInternal ) sample->opaque;
101 c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	1067 SDL_RWops *rw = internal->rw;
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	1068 shn_t shn = (shn_t ) internal->decoder_private;
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	1069 Sint32 cmd;
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	1070
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	1071 assert(shn->backBufLeft >= 0);
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	1072
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	1073 /* see if there are leftovers to copy... */
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	1074 if (shn->backBufLeft > 0)
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	1075 {
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	1076 retval = MIN_MACRO(shn->backBufLeft, internal->buffer_size);
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	1077 memcpy(internal->buffer, shn->backBuffer, retval);
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	1078 shn->backBufLeft -= retval;
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	1079 memcpy(shn->backBuffer, shn->backBuffer + retval, shn->backBufLeft);
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	1080 } /* if */
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	1081
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	1082 assert((shn->backBufLeft == 0) \|\| (retval == internal->buffer_size));
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	1083
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	1084 /* get commands from file and execute them */
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	1085 while (retval < internal->buffer_size)
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	1086 {
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	1087 if (!uvar_get(SHN_FNSIZE, shn, rw, &cmd))
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	1088 {
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	1089 sample->flags \|= SOUND_SAMPLEFLAG_ERROR;
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	1090 return(retval);
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	1091 } /* if */
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	1092
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	1093 if (cmd == SHN_FN_QUIT)
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	1094 {
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	1095 sample->flags \|= SOUND_SAMPLEFLAG_EOF;
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	1096 return(retval);
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	1097 } /* if */
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	1098
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	1099 switch(cmd)
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	1100 {
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	1101 case SHN_FN_ZERO:
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	1102 case SHN_FN_DIFF0:
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	1103 case SHN_FN_DIFF1:
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	1104 case SHN_FN_DIFF2:
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	1105 case SHN_FN_DIFF3:
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	1106 case SHN_FN_QLPC:
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	1107 {
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	1108 Sint32 i;
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	1109 Sint32 coffset, *cbuffer = shn->buffer[chan];
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	1110 Sint32 resn = 0, nlpc, j;
86 155ab2a427ca Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	1111
101 c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	1112 if (cmd != SHN_FN_ZERO)
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	1113 {
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	1114 if (!uvar_get(SHN_ENERGYSIZE, shn, rw, &resn))
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	1115 {
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	1116 sample->flags \|= SOUND_SAMPLEFLAG_ERROR;
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	1117 return(retval);
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	1118 } /* if */
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	1119
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	1120 /* version 0 differed in definition of var_get */
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	1121 if (shn->version == 0)
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	1122 resn--;
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	1123 } /* if */
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	1124
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	1125 /* find mean offset : N.B. this code duplicated */
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	1126 if (shn->nmean == 0)
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	1127 coffset = shn->offset[chan][0];
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	1128 else
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	1129 {
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	1130 Sint32 sum = (shn->version < 2) ? 0 : shn->nmean / 2;
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	1131 for (i = 0; i < shn->nmean; i++)
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	1132 sum += shn->offset[chan][i];
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	1133
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	1134 if (shn->version < 2)
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	1135 coffset = sum / shn->nmean;
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	1136 else
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	1137 coffset = ROUNDEDSHIFTDOWN(sum / shn->nmean, shn->bitshift);
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	1138 } /* else */
86 155ab2a427ca Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	1139
101 c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	1140 switch (cmd)
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	1141 {
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	1142 case SHN_FN_ZERO:
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	1143 for (i = 0; i < shn->blocksize; i++)
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	1144 cbuffer[i] = 0;
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	1145 break;
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	1146
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	1147 case SHN_FN_DIFF0:
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	1148 for(i = 0; i < shn->blocksize; i++)
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	1149 {
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	1150 if (!var_get(resn, shn, rw, &cbuffer[i]))
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	1151 {
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	1152 sample->flags \|= SOUND_SAMPLEFLAG_ERROR;
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	1153 return(retval);
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	1154 } /* if */
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	1155 cbuffer[i] += coffset;
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	1156 } /* for */
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	1157 break;
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	1158
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	1159 case SHN_FN_DIFF1:
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	1160 for(i = 0; i < shn->blocksize; i++)
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	1161 {
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	1162 if (!var_get(resn, shn, rw, &cbuffer[i]))
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	1163 {
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	1164 sample->flags \|= SOUND_SAMPLEFLAG_ERROR;
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	1165 return(retval);
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	1166 } /* if */
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	1167 cbuffer[i] += cbuffer[i - 1];
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	1168 } /* for */
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	1169 break;
86 155ab2a427ca Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	1170
101 c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	1171 case SHN_FN_DIFF2:
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	1172 for (i = 0; i < shn->blocksize; i++)
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	1173 {
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	1174 if (!var_get(resn, shn, rw, &cbuffer[i]))
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	1175 {
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	1176 sample->flags \|= SOUND_SAMPLEFLAG_ERROR;
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	1177 return(retval);
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	1178 } /* if */
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	1179 cbuffer[i] += (2 * cbuffer[i-1] - cbuffer[i-2]);
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	1180 } /* for */
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	1181 break;
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	1182
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	1183 case SHN_FN_DIFF3:
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	1184 for (i = 0; i < shn->blocksize; i++)
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	1185 {
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	1186 if (!var_get(resn, shn, rw, &cbuffer[i]))
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	1187 {
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	1188 sample->flags \|= SOUND_SAMPLEFLAG_ERROR;
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	1189 return(retval);
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	1190 } /* if */
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	1191 cbuffer[i] += 3 * (cbuffer[i - 1] - cbuffer[i - 2]) + cbuffer[i - 3];
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	1192 } /* for */
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	1193 break;
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	1194
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	1195 case SHN_FN_QLPC:
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	1196 if (!uvar_get(SHN_LPCQSIZE, shn, rw, &nlpc))
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	1197 {
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	1198 sample->flags \|= SOUND_SAMPLEFLAG_ERROR;
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	1199 return(retval);
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	1200 } /* if */
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	1201
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	1202 for(i = 0; i < nlpc; i++)
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	1203 {
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	1204 if (!var_get(SHN_LPCQUANT, shn, rw, &shn->qlpc[i]))
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	1205 {
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	1206 sample->flags \|= SOUND_SAMPLEFLAG_ERROR;
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	1207 return(retval);
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	1208 } /* if */
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	1209 } /* for */
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	1210
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	1211 for(i = 0; i < nlpc; i++)
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	1212 cbuffer[i - nlpc] -= coffset;
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	1213
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	1214 for(i = 0; i < shn->blocksize; i++)
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	1215 {
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	1216 Sint32 sum = shn->lpcqoffset;
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	1217
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	1218 for(j = 0; j < nlpc; j++)
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	1219 sum += shn->qlpc[j] * cbuffer[i - j - 1];
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	1220
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	1221 if (!var_get(resn, shn, rw, &cbuffer[i]))
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	1222 {
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	1223 sample->flags \|= SOUND_SAMPLEFLAG_ERROR;
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	1224 return(retval);
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	1225 } /* if */
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	1226 cbuffer[i] += (sum >> SHN_LPCQUANT);
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	1227 } /* for */
86 155ab2a427ca Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	1228
101 c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	1229 if (coffset != 0)
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	1230 {
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	1231 for(i = 0; i < shn->blocksize; i++)
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	1232 cbuffer[i] += coffset;
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	1233 } /* if */
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	1234
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	1235 break;
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	1236 } /* switch */
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	1237
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	1238 /* store mean value if appropriate : N.B. Duplicated code */
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	1239 if (shn->nmean > 0)
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	1240 {
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	1241 Sint32 sum = (shn->version < 2) ? 0 : shn->blocksize / 2;
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	1242 for (i = 0; i < shn->blocksize; i++)
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	1243 sum += cbuffer[i];
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	1244
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	1245 for(i = 1; i < shn->nmean; i++)
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	1246 shn->offset[chan][i - 1] = shn->offset[chan][i];
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	1247
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	1248 if (shn->version < 2)
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	1249 shn->offset[chan][shn->nmean - 1] = sum / shn->blocksize;
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	1250 else
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	1251 shn->offset[chan][shn->nmean - 1] = (sum / shn->blocksize) << shn->bitshift;
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	1252 } /* if */
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	1253
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	1254 /* do the wrap */
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	1255 for(i = -shn->nwrap; i < 0; i++)
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	1256 cbuffer[i] = cbuffer[i + shn->blocksize];
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	1257
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	1258 fix_bitshift(cbuffer, shn->blocksize, shn->bitshift, shn->datatype);
86 155ab2a427ca Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	1259
101 c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	1260 if (chan == shn->nchan - 1)
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	1261 {
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	1262 retval += put_to_buffers(sample, retval);
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	1263 if (sample->flags & SOUND_SAMPLEFLAG_ERROR)
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	1264 return(retval);
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	1265 } /* if */
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	1266
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	1267 chan = (chan + 1) % shn->nchan;
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	1268 break;
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	1269 } /* case */
86 155ab2a427ca Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	1270
101 c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	1271 case SHN_FN_BLOCKSIZE:
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	1272 if (!uint_get((int) (log((double) shn->blocksize) / M_LN2),
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	1273 shn, rw, &shn->blocksize))
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	1274 {
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	1275 sample->flags \|= SOUND_SAMPLEFLAG_ERROR;
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	1276 return(retval);
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	1277 } /* if */
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	1278 break;
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	1279
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	1280 case SHN_FN_BITSHIFT:
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	1281 if (!uvar_get(SHN_BITSHIFTSIZE, shn, rw, &shn->bitshift))
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	1282 {
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	1283 sample->flags \|= SOUND_SAMPLEFLAG_ERROR;
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	1284 return(retval);
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	1285 } /* if */
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	1286 break;
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	1287
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	1288 case SHN_FN_VERBATIM:
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	1289 default:
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	1290 Sound_SetError("SHN: Unhandled function.");
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	1291 sample->flags \|= SOUND_SAMPLEFLAG_ERROR;
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	1292 return(retval);
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	1293 } /* switch */
c08794028df4 Fully implemented. Needs testing, but it works on the Grateful Dead show I Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	1294 } /* while */
86 155ab2a427ca Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	1295
155ab2a427ca Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	1296 return(retval);
155ab2a427ca Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	1297 } /* SHN_read */
155ab2a427ca Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	1298
155ab2a427ca Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	1299 #endif /* defined SOUND_SUPPORTS_SHN */
155ab2a427ca Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	1300
155ab2a427ca Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	1301 /* end of shn.c ... */
155ab2a427ca Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	1302

Mercurial > SDL_sound_CoreAudio

annotate decoders/shn.c @ 161:0f958979b1dd