SDL_sound_CoreAudio: decoders/voc.c annotate

annotate decoders/voc.c @ 525:50bb9a6cebfe stable-1.0

Updated my email address.

author	Ryan C. Gordon <icculus@icculus.org>
date	Mon, 06 Aug 2007 09:44:02 +0000
parents	3f03af31e246
children

rev	line source
14 41e5e07c5fed Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	1 /*
41e5e07c5fed Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	2 * SDL_sound -- An abstract sound format decoding API.
41e5e07c5fed Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	3 * Copyright (C) 2001 Ryan C. Gordon.
41e5e07c5fed Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	4 *
41e5e07c5fed Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	5 * This library is free software; you can redistribute it and/or
41e5e07c5fed Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	6 * modify it under the terms of the GNU Lesser General Public
41e5e07c5fed Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	7 * License as published by the Free Software Foundation; either
41e5e07c5fed 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.
41e5e07c5fed Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	9 *
41e5e07c5fed Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	10 * This library is distributed in the hope that it will be useful,
41e5e07c5fed Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
41e5e07c5fed Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
41e5e07c5fed Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	13 * Lesser General Public License for more details.
41e5e07c5fed Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	14 *
41e5e07c5fed Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	15 * You should have received a copy of the GNU Lesser General Public
41e5e07c5fed Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	16 * License along with this library; if not, write to the Free Software
41e5e07c5fed Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	17 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
41e5e07c5fed Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	18 */
41e5e07c5fed Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	19
41e5e07c5fed Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	20 /*
41e5e07c5fed Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	21 * VOC decoder for SDL_sound.
41e5e07c5fed Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	22 *
41e5e07c5fed Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	23 * This driver handles Creative Labs VOC audio data...this is a legacy format,
41e5e07c5fed Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	24 * but there's some game ports that could make use of such a decoder. Plus,
41e5e07c5fed Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	25 * VOC is fairly straightforward to decode, so this is a more complex, but
41e5e07c5fed Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	26 * still palatable example of an SDL_sound decoder. Y'know, in case the
41e5e07c5fed Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	27 * RAW decoder didn't do it for you. :)
41e5e07c5fed Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	28 *
41e5e07c5fed Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	29 * This code was ripped from a decoder I had written for SDL_mixer, which was
41e5e07c5fed Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	30 * largely ripped from sox v12.17.1's voc.c.
41e5e07c5fed Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	31 *
41e5e07c5fed Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	32 * SDL_mixer: http://www.libsdl.org/projects/SDL_mixer/
41e5e07c5fed Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	33 * sox: http://www.freshmeat.net/projects/sox/
41e5e07c5fed Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	34 *
184 47cc2de2ae36 Changed reference to "LICENSE" file to "COPYING". Ryan C. Gordon <icculus@icculus.org> parents: 149 diff changeset	35 * Please see the file COPYING in the source's root directory.
14 41e5e07c5fed Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	36 *
525 50bb9a6cebfe Updated my email address. Ryan C. Gordon <icculus@icculus.org> parents: 481 diff changeset	37 * This file written by Ryan C. Gordon. (icculus@icculus.org)
14 41e5e07c5fed Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	38 */
41e5e07c5fed Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	39
106 40de367eb59e Changing my include structure to do this right. Ryan C. Gordon <icculus@icculus.org> parents: 104 diff changeset	40 #if HAVE_CONFIG_H
40de367eb59e Changing my include structure to do this right. Ryan C. Gordon <icculus@icculus.org> parents: 104 diff changeset	41 # include <config.h>
40de367eb59e Changing my include structure to do this right. Ryan C. Gordon <icculus@icculus.org> parents: 104 diff changeset	42 #endif
100 6d9fdec2f708 added config.h, added --enable-debug flag, various other changes to the build system fingolfin parents: 64 diff changeset	43
114 dd95a12539fd Changed an #if defined to #ifdef, for consistency with the other Ryan C. Gordon <icculus@icculus.org> parents: 106 diff changeset	44 #ifdef SOUND_SUPPORTS_VOC
104 103cfcb3c014 Updated to fix build system problem. Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	45
14 41e5e07c5fed Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	46 #include <stdio.h>
41e5e07c5fed Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	47 #include <stdlib.h>
41e5e07c5fed Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	48 #include <string.h>
41e5e07c5fed Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	49
106 40de367eb59e Changing my include structure to do this right. Ryan C. Gordon <icculus@icculus.org> parents: 104 diff changeset	50 #include "SDL_sound.h"
40de367eb59e Changing my include structure to do this right. Ryan C. Gordon <icculus@icculus.org> parents: 104 diff changeset	51
40de367eb59e Changing my include structure to do this right. Ryan C. Gordon <icculus@icculus.org> parents: 104 diff changeset	52 #define __SDL_SOUND_INTERNAL__
40de367eb59e Changing my include structure to do this right. Ryan C. Gordon <icculus@icculus.org> parents: 104 diff changeset	53 #include "SDL_sound_internal.h"
40de367eb59e Changing my include structure to do this right. Ryan C. Gordon <icculus@icculus.org> parents: 104 diff changeset	54
47 ea58bc3b15d7 Added init() and quit() methods. Ryan C. Gordon <icculus@icculus.org> parents: 32 diff changeset	55 static int VOC_init(void);
ea58bc3b15d7 Added init() and quit() methods. Ryan C. Gordon <icculus@icculus.org> parents: 32 diff changeset	56 static void VOC_quit(void);
14 41e5e07c5fed Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	57 static int VOC_open(Sound_Sample sample, const char ext);
41e5e07c5fed Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	58 static void VOC_close(Sound_Sample *sample);
41e5e07c5fed Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	59 static Uint32 VOC_read(Sound_Sample *sample);
221 c9772a9f5271 Initial implementation or stubs for rewind method. Other cleanups. Ryan C. Gordon <icculus@icculus.org> parents: 184 diff changeset	60 static int VOC_rewind(Sound_Sample *sample);
306 c97be6e1bd27 Added framework for Sound_Seek() support. Ryan C. Gordon <icculus@icculus.org> parents: 301 diff changeset	61 static int VOC_seek(Sound_Sample *sample, Uint32 ms);
14 41e5e07c5fed Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	62
149 1df5c106504e Decoders can now list multiple file extensions. Ryan C. Gordon <icculus@icculus.org> parents: 114 diff changeset	63 static const char *extensions_voc[] = { "VOC", NULL };
14 41e5e07c5fed Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	64 const Sound_DecoderFunctions __Sound_DecoderFunctions_VOC =
41e5e07c5fed Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	65 {
41e5e07c5fed Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	66 {
149 1df5c106504e Decoders can now list multiple file extensions. Ryan C. Gordon <icculus@icculus.org> parents: 114 diff changeset	67 extensions_voc,
14 41e5e07c5fed Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	68 "Creative Labs Voice format",
525 50bb9a6cebfe Updated my email address. Ryan C. Gordon <icculus@icculus.org> parents: 481 diff changeset	69 "Ryan C. Gordon <icculus@icculus.org>",
14 41e5e07c5fed Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	70 "http://www.icculus.org/SDL_sound/"
41e5e07c5fed Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	71 },
41e5e07c5fed Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	72
221 c9772a9f5271 Initial implementation or stubs for rewind method. Other cleanups. Ryan C. Gordon <icculus@icculus.org> parents: 184 diff changeset	73 VOC_init, /* init() method */
c9772a9f5271 Initial implementation or stubs for rewind method. Other cleanups. Ryan C. Gordon <icculus@icculus.org> parents: 184 diff changeset	74 VOC_quit, /* quit() method */
c9772a9f5271 Initial implementation or stubs for rewind method. Other cleanups. Ryan C. Gordon <icculus@icculus.org> parents: 184 diff changeset	75 VOC_open, /* open() method */
c9772a9f5271 Initial implementation or stubs for rewind method. Other cleanups. Ryan C. Gordon <icculus@icculus.org> parents: 184 diff changeset	76 VOC_close, /* close() method */
c9772a9f5271 Initial implementation or stubs for rewind method. Other cleanups. Ryan C. Gordon <icculus@icculus.org> parents: 184 diff changeset	77 VOC_read, /* read() method */
306 c97be6e1bd27 Added framework for Sound_Seek() support. Ryan C. Gordon <icculus@icculus.org> parents: 301 diff changeset	78 VOC_rewind, /* rewind() method */
c97be6e1bd27 Added framework for Sound_Seek() support. Ryan C. Gordon <icculus@icculus.org> parents: 301 diff changeset	79 VOC_seek /* seek() method */
14 41e5e07c5fed Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	80 };
41e5e07c5fed Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	81
41e5e07c5fed Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	82
41e5e07c5fed Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	83 /* Private data for VOC file */
41e5e07c5fed Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	84 typedef struct vocstuff {
385 9efb760c4a6b FIXME removal and cleanups. Ryan C. Gordon <icculus@icculus.org> parents: 377 diff changeset	85 Uint32 rest; /* bytes remaining in current block */
9efb760c4a6b FIXME removal and cleanups. Ryan C. Gordon <icculus@icculus.org> parents: 377 diff changeset	86 Uint32 rate; /* rate code (byte) of this chunk */
9efb760c4a6b FIXME removal and cleanups. Ryan C. Gordon <icculus@icculus.org> parents: 377 diff changeset	87 int silent; /* sound or silence? */
9efb760c4a6b FIXME removal and cleanups. Ryan C. Gordon <icculus@icculus.org> parents: 377 diff changeset	88 Uint32 srate; /* rate code (byte) of silence */
9efb760c4a6b FIXME removal and cleanups. Ryan C. Gordon <icculus@icculus.org> parents: 377 diff changeset	89 Uint32 blockseek; /* start of current output block */
9efb760c4a6b FIXME removal and cleanups. Ryan C. Gordon <icculus@icculus.org> parents: 377 diff changeset	90 Uint32 samples; /* number of samples output */
9efb760c4a6b FIXME removal and cleanups. Ryan C. Gordon <icculus@icculus.org> parents: 377 diff changeset	91 Uint32 size; /* word length of data */
9efb760c4a6b FIXME removal and cleanups. Ryan C. Gordon <icculus@icculus.org> parents: 377 diff changeset	92 Uint8 channels; /* number of sound channels */
14 41e5e07c5fed Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	93 int extended; /* Has an extended block been read? */
41e5e07c5fed Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	94 Uint32 bufpos; /* byte position in internal->buffer. */
224 1bafef18dabf Implemented rewind method. Ryan C. Gordon <icculus@icculus.org> parents: 221 diff changeset	95 Uint32 start_pos; /* offset to seek to in stream when rewinding. */
385 9efb760c4a6b FIXME removal and cleanups. Ryan C. Gordon <icculus@icculus.org> parents: 377 diff changeset	96 int error; /* error condition (as opposed to EOF). */
14 41e5e07c5fed Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	97 } vs_t;
41e5e07c5fed Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	98
385 9efb760c4a6b FIXME removal and cleanups. Ryan C. Gordon <icculus@icculus.org> parents: 377 diff changeset	99
62 b13fafb976be Changed _D macro to DBGSND. Ryan C. Gordon <icculus@icculus.org> parents: 47 diff changeset	100 /* Size field */
14 41e5e07c5fed Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	101 /* SJB: note that the 1st 3 are sometimes used as sizeof(type) */
41e5e07c5fed Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	102 #define ST_SIZE_BYTE 1
41e5e07c5fed Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	103 #define ST_SIZE_8BIT 1
41e5e07c5fed Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	104 #define ST_SIZE_WORD 2
41e5e07c5fed Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	105 #define ST_SIZE_16BIT 2
41e5e07c5fed Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	106 #define ST_SIZE_DWORD 4
41e5e07c5fed Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	107 #define ST_SIZE_32BIT 4
41e5e07c5fed Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	108 #define ST_SIZE_FLOAT 5
41e5e07c5fed Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	109 #define ST_SIZE_DOUBLE 6
41e5e07c5fed Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	110 #define ST_SIZE_IEEE 7 /* IEEE 80-bit floats. */
41e5e07c5fed Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	111
41e5e07c5fed Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	112 /* Style field */
41e5e07c5fed Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	113 #define ST_ENCODING_UNSIGNED 1 /* unsigned linear: Sound Blaster */
41e5e07c5fed Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	114 #define ST_ENCODING_SIGN2 2 /* signed linear 2's comp: Mac */
41e5e07c5fed Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	115 #define ST_ENCODING_ULAW 3 /* U-law signed logs: US telephony, SPARC */
41e5e07c5fed Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	116 #define ST_ENCODING_ALAW 4 /* A-law signed logs: non-US telephony */
41e5e07c5fed Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	117 #define ST_ENCODING_ADPCM 5 /* Compressed PCM */
41e5e07c5fed Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	118 #define ST_ENCODING_IMA_ADPCM 6 /* Compressed PCM */
41e5e07c5fed Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	119 #define ST_ENCODING_GSM 7 /* GSM 6.10 33-byte frame lossy compression */
41e5e07c5fed Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	120
41e5e07c5fed Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	121 #define VOC_TERM 0
41e5e07c5fed Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	122 #define VOC_DATA 1
41e5e07c5fed Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	123 #define VOC_CONT 2
41e5e07c5fed Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	124 #define VOC_SILENCE 3
41e5e07c5fed Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	125 #define VOC_MARKER 4
41e5e07c5fed Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	126 #define VOC_TEXT 5
41e5e07c5fed Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	127 #define VOC_LOOP 6
41e5e07c5fed Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	128 #define VOC_LOOPEND 7
41e5e07c5fed Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	129 #define VOC_EXTENDED 8
41e5e07c5fed Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	130 #define VOC_DATA_16 9
41e5e07c5fed Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	131
41e5e07c5fed Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	132
47 ea58bc3b15d7 Added init() and quit() methods. Ryan C. Gordon <icculus@icculus.org> parents: 32 diff changeset	133 static int VOC_init(void)
ea58bc3b15d7 Added init() and quit() methods. Ryan C. Gordon <icculus@icculus.org> parents: 32 diff changeset	134 {
ea58bc3b15d7 Added init() and quit() methods. Ryan C. Gordon <icculus@icculus.org> parents: 32 diff changeset	135 return(1); /* always succeeds. */
ea58bc3b15d7 Added init() and quit() methods. Ryan C. Gordon <icculus@icculus.org> parents: 32 diff changeset	136 } /* VOC_init */
ea58bc3b15d7 Added init() and quit() methods. Ryan C. Gordon <icculus@icculus.org> parents: 32 diff changeset	137
ea58bc3b15d7 Added init() and quit() methods. Ryan C. Gordon <icculus@icculus.org> parents: 32 diff changeset	138
ea58bc3b15d7 Added init() and quit() methods. Ryan C. Gordon <icculus@icculus.org> parents: 32 diff changeset	139 static void VOC_quit(void)
ea58bc3b15d7 Added init() and quit() methods. Ryan C. Gordon <icculus@icculus.org> parents: 32 diff changeset	140 {
ea58bc3b15d7 Added init() and quit() methods. Ryan C. Gordon <icculus@icculus.org> parents: 32 diff changeset	141 /* it's a no-op. */
ea58bc3b15d7 Added init() and quit() methods. Ryan C. Gordon <icculus@icculus.org> parents: 32 diff changeset	142 } /* VOC_quit */
ea58bc3b15d7 Added init() and quit() methods. Ryan C. Gordon <icculus@icculus.org> parents: 32 diff changeset	143
ea58bc3b15d7 Added init() and quit() methods. Ryan C. Gordon <icculus@icculus.org> parents: 32 diff changeset	144
401 c42ac9ee2ce4 Fixed "inline" keyword to compile. Ryan C. Gordon <icculus@icculus.org> parents: 387 diff changeset	145 static __inline__ int voc_readbytes(SDL_RWops src, vs_t v, void *p, int size)
385 9efb760c4a6b FIXME removal and cleanups. Ryan C. Gordon <icculus@icculus.org> parents: 377 diff changeset	146 {
9efb760c4a6b FIXME removal and cleanups. Ryan C. Gordon <icculus@icculus.org> parents: 377 diff changeset	147 if (SDL_RWread(src, p, size, 1) != 1)
9efb760c4a6b FIXME removal and cleanups. Ryan C. Gordon <icculus@icculus.org> parents: 377 diff changeset	148 {
9efb760c4a6b FIXME removal and cleanups. Ryan C. Gordon <icculus@icculus.org> parents: 377 diff changeset	149 v->error = 1;
387 fb519e6028e3 Changed all the Sound_SetError() calls to __Sound_SetError (or BAIL_MACRO) Ryan C. Gordon <icculus@icculus.org>* parents: 385 diff changeset	150 BAIL_MACRO("VOC: i/o error", 0);
385 9efb760c4a6b FIXME removal and cleanups. Ryan C. Gordon <icculus@icculus.org> parents: 377 diff changeset	151 } /* if */
9efb760c4a6b FIXME removal and cleanups. Ryan C. Gordon <icculus@icculus.org> parents: 377 diff changeset	152
9efb760c4a6b FIXME removal and cleanups. Ryan C. Gordon <icculus@icculus.org> parents: 377 diff changeset	153 return(1);
9efb760c4a6b FIXME removal and cleanups. Ryan C. Gordon <icculus@icculus.org> parents: 377 diff changeset	154 } /* voc_readbytes */
9efb760c4a6b FIXME removal and cleanups. Ryan C. Gordon <icculus@icculus.org> parents: 377 diff changeset	155
9efb760c4a6b FIXME removal and cleanups. Ryan C. Gordon <icculus@icculus.org> parents: 377 diff changeset	156
401 c42ac9ee2ce4 Fixed "inline" keyword to compile. Ryan C. Gordon <icculus@icculus.org> parents: 387 diff changeset	157 static __inline__ int voc_check_header(SDL_RWops *src)
14 41e5e07c5fed Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	158 {
41e5e07c5fed Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	159 /* VOC magic header */
41e5e07c5fed Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	160 Uint8 signature[20]; /* "Creative Voice File\032" */
41e5e07c5fed Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	161 Uint16 datablockofs;
385 9efb760c4a6b FIXME removal and cleanups. Ryan C. Gordon <icculus@icculus.org> parents: 377 diff changeset	162 vs_t v; /* dummy struct for voc_readbytes */
14 41e5e07c5fed Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	163
385 9efb760c4a6b FIXME removal and cleanups. Ryan C. Gordon <icculus@icculus.org> parents: 377 diff changeset	164 if (!voc_readbytes(src, &v, signature, sizeof (signature)))
14 41e5e07c5fed Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	165 return(0);
41e5e07c5fed Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	166
385 9efb760c4a6b FIXME removal and cleanups. Ryan C. Gordon <icculus@icculus.org> parents: 377 diff changeset	167 if (memcmp(signature, "Creative Voice File\032", sizeof (signature)) != 0)
9efb760c4a6b FIXME removal and cleanups. Ryan C. Gordon <icculus@icculus.org> parents: 377 diff changeset	168 {
387 fb519e6028e3 Changed all the Sound_SetError() calls to __Sound_SetError (or BAIL_MACRO) Ryan C. Gordon <icculus@icculus.org>* parents: 385 diff changeset	169 BAIL_MACRO("VOC: Wrong signature; not a VOC file.", 0);
385 9efb760c4a6b FIXME removal and cleanups. Ryan C. Gordon <icculus@icculus.org> parents: 377 diff changeset	170 } /* if */
14 41e5e07c5fed Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	171
41e5e07c5fed Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	172 /* get the offset where the first datablock is located */
385 9efb760c4a6b FIXME removal and cleanups. Ryan C. Gordon <icculus@icculus.org> parents: 377 diff changeset	173 if (!voc_readbytes(src, &v, &datablockofs, sizeof (Uint16)))
14 41e5e07c5fed Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	174 return(0);
41e5e07c5fed Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	175
41e5e07c5fed Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	176 datablockofs = SDL_SwapLE16(datablockofs);
41e5e07c5fed Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	177
41e5e07c5fed Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	178 if (SDL_RWseek(src, datablockofs, SEEK_SET) != datablockofs)
385 9efb760c4a6b FIXME removal and cleanups. Ryan C. Gordon <icculus@icculus.org> parents: 377 diff changeset	179 {
387 fb519e6028e3 Changed all the Sound_SetError() calls to __Sound_SetError (or BAIL_MACRO) Ryan C. Gordon <icculus@icculus.org>* parents: 385 diff changeset	180 BAIL_MACRO("VOC: Failed to seek to data block.", 0);
385 9efb760c4a6b FIXME removal and cleanups. Ryan C. Gordon <icculus@icculus.org> parents: 377 diff changeset	181 } /* if */
14 41e5e07c5fed Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	182
41e5e07c5fed Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	183 return(1); /* success! */
41e5e07c5fed Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	184 } /* voc_check_header */
41e5e07c5fed Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	185
41e5e07c5fed Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	186
41e5e07c5fed Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	187 /* Read next block header, save info, leave position at start of data */
468 cd46c97e58bc Fixed broken VOC decoder...would always dereference NULL during VOC_open(). Ryan C. Gordon <icculus@icculus.org> parents: 449 diff changeset	188 static int voc_get_block(Sound_Sample sample, vs_t v)
14 41e5e07c5fed Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	189 {
41e5e07c5fed Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	190 Sound_SampleInternal internal = (Sound_SampleInternal ) sample->opaque;
41e5e07c5fed Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	191 SDL_RWops *src = internal->rw;
41e5e07c5fed Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	192 Uint8 bits24[3];
41e5e07c5fed Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	193 Uint8 uc, block;
41e5e07c5fed Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	194 Uint32 sblen;
41e5e07c5fed Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	195 Uint16 new_rate_short;
41e5e07c5fed Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	196 Uint32 new_rate_long;
41e5e07c5fed Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	197 Uint8 trash[6];
41e5e07c5fed Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	198 Uint16 period;
41e5e07c5fed Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	199 int i;
41e5e07c5fed Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	200
41e5e07c5fed Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	201 v->silent = 0;
41e5e07c5fed Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	202 while (v->rest == 0)
41e5e07c5fed Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	203 {
41e5e07c5fed Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	204 if (SDL_RWread(src, &block, sizeof (block), 1) != 1)
41e5e07c5fed Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	205 return 1; /* assume that's the end of the file. */
41e5e07c5fed Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	206
41e5e07c5fed Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	207 if (block == VOC_TERM)
41e5e07c5fed Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	208 return 1;
41e5e07c5fed Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	209
41e5e07c5fed Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	210 if (SDL_RWread(src, bits24, sizeof (bits24), 1) != 1)
41e5e07c5fed Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	211 return 1; /* assume that's the end of the file. */
62 b13fafb976be Changed _D macro to DBGSND. Ryan C. Gordon <icculus@icculus.org> parents: 47 diff changeset	212
14 41e5e07c5fed Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	213 /* Size is an 24-bit value. Ugh. */
41e5e07c5fed Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	214 sblen = ( (bits24[0]) \| (bits24[1] << 8) \| (bits24[2] << 16) );
41e5e07c5fed Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	215
41e5e07c5fed Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	216 switch(block)
41e5e07c5fed Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	217 {
41e5e07c5fed Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	218 case VOC_DATA:
385 9efb760c4a6b FIXME removal and cleanups. Ryan C. Gordon <icculus@icculus.org> parents: 377 diff changeset	219 if (!voc_readbytes(src, v, &uc, sizeof (uc)))
14 41e5e07c5fed Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	220 return 0;
41e5e07c5fed Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	221
41e5e07c5fed Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	222 /* When DATA block preceeded by an EXTENDED */
41e5e07c5fed Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	223 /* block, the DATA blocks rate value is invalid */
41e5e07c5fed Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	224 if (!v->extended)
41e5e07c5fed Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	225 {
387 fb519e6028e3 Changed all the Sound_SetError() calls to __Sound_SetError (or BAIL_MACRO) Ryan C. Gordon <icculus@icculus.org>* parents: 385 diff changeset	226 BAIL_IF_MACRO(uc == 0, "VOC: Sample rate is zero?", 0);
14 41e5e07c5fed Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	227
41e5e07c5fed Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	228 if ((v->rate != -1) && (uc != v->rate))
387 fb519e6028e3 Changed all the Sound_SetError() calls to __Sound_SetError (or BAIL_MACRO) Ryan C. Gordon <icculus@icculus.org>* parents: 385 diff changeset	229 BAIL_MACRO("VOC sample rate codes differ", 0);
14 41e5e07c5fed Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	230
41e5e07c5fed Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	231 v->rate = uc;
481 3f03af31e246 Backported .voc fix. Ryan C. Gordon <icculus@icculus.org> parents: 468 diff changeset	232 v->channels = 1;
14 41e5e07c5fed Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	233 sample->actual.rate = 1000000.0/(256 - v->rate);
481 3f03af31e246 Backported .voc fix. Ryan C. Gordon <icculus@icculus.org> parents: 468 diff changeset	234 sample->actual.channels = 1;
385 9efb760c4a6b FIXME removal and cleanups. Ryan C. Gordon <icculus@icculus.org> parents: 377 diff changeset	235 } /* if */
14 41e5e07c5fed Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	236
385 9efb760c4a6b FIXME removal and cleanups. Ryan C. Gordon <icculus@icculus.org> parents: 377 diff changeset	237 if (!voc_readbytes(src, v, &uc, sizeof (uc)))
387 fb519e6028e3 Changed all the Sound_SetError() calls to __Sound_SetError (or BAIL_MACRO) Ryan C. Gordon <icculus@icculus.org>* parents: 385 diff changeset	238 return(0);
14 41e5e07c5fed Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	239
387 fb519e6028e3 Changed all the Sound_SetError() calls to __Sound_SetError (or BAIL_MACRO) Ryan C. Gordon <icculus@icculus.org>* parents: 385 diff changeset	240 BAIL_IF_MACRO(uc != 0, "VOC: only supports 8-bit data", 0);
14 41e5e07c5fed Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	241
41e5e07c5fed Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	242 v->extended = 0;
41e5e07c5fed Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	243 v->rest = sblen - 2;
41e5e07c5fed Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	244 v->size = ST_SIZE_BYTE;
41e5e07c5fed Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	245 return 1;
41e5e07c5fed Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	246
41e5e07c5fed Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	247 case VOC_DATA_16:
385 9efb760c4a6b FIXME removal and cleanups. Ryan C. Gordon <icculus@icculus.org> parents: 377 diff changeset	248 if (!voc_readbytes(src, v, &new_rate_long, sizeof (Uint32)))
14 41e5e07c5fed Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	249 return 0;
385 9efb760c4a6b FIXME removal and cleanups. Ryan C. Gordon <icculus@icculus.org> parents: 377 diff changeset	250
14 41e5e07c5fed Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	251 new_rate_long = SDL_SwapLE32(new_rate_long);
387 fb519e6028e3 Changed all the Sound_SetError() calls to __Sound_SetError (or BAIL_MACRO) Ryan C. Gordon <icculus@icculus.org>* parents: 385 diff changeset	252 BAIL_IF_MACRO(!new_rate_long, "VOC: Sample rate is zero?", 0);
fb519e6028e3 Changed all the Sound_SetError() calls to __Sound_SetError (or BAIL_MACRO) Ryan C. Gordon <icculus@icculus.org>* parents: 385 diff changeset	253
14 41e5e07c5fed Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	254 if ((v->rate != -1) && (new_rate_long != v->rate))
387 fb519e6028e3 Changed all the Sound_SetError() calls to __Sound_SetError (or BAIL_MACRO) Ryan C. Gordon <icculus@icculus.org>* parents: 385 diff changeset	255 BAIL_MACRO("VOC: sample rate codes differ", 0);
fb519e6028e3 Changed all the Sound_SetError() calls to __Sound_SetError (or BAIL_MACRO) Ryan C. Gordon <icculus@icculus.org>* parents: 385 diff changeset	256
14 41e5e07c5fed Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	257 v->rate = new_rate_long;
41e5e07c5fed Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	258 sample->actual.rate = new_rate_long;
41e5e07c5fed Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	259
385 9efb760c4a6b FIXME removal and cleanups. Ryan C. Gordon <icculus@icculus.org> parents: 377 diff changeset	260 if (!voc_readbytes(src, v, &uc, sizeof (uc)))
14 41e5e07c5fed Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	261 return 0;
41e5e07c5fed Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	262
41e5e07c5fed Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	263 switch (uc)
41e5e07c5fed Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	264 {
41e5e07c5fed Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	265 case 8: v->size = ST_SIZE_BYTE; break;
41e5e07c5fed Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	266 case 16: v->size = ST_SIZE_WORD; break;
41e5e07c5fed Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	267 default:
387 fb519e6028e3 Changed all the Sound_SetError() calls to __Sound_SetError (or BAIL_MACRO) Ryan C. Gordon <icculus@icculus.org>* parents: 385 diff changeset	268 BAIL_MACRO("VOC: unknown data size", 0);
385 9efb760c4a6b FIXME removal and cleanups. Ryan C. Gordon <icculus@icculus.org> parents: 377 diff changeset	269 } /* switch */
14 41e5e07c5fed Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	270
385 9efb760c4a6b FIXME removal and cleanups. Ryan C. Gordon <icculus@icculus.org> parents: 377 diff changeset	271 if (!voc_readbytes(src, v, &v->channels, sizeof (Uint8)))
14 41e5e07c5fed Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	272 return 0;
41e5e07c5fed Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	273
385 9efb760c4a6b FIXME removal and cleanups. Ryan C. Gordon <icculus@icculus.org> parents: 377 diff changeset	274 if (!voc_readbytes(src, v, trash, sizeof (Uint8) * 6))
14 41e5e07c5fed Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	275 return 0;
41e5e07c5fed Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	276
41e5e07c5fed Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	277 v->rest = sblen - 12;
41e5e07c5fed Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	278 return 1;
41e5e07c5fed Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	279
41e5e07c5fed Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	280 case VOC_CONT:
41e5e07c5fed Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	281 v->rest = sblen;
41e5e07c5fed Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	282 return 1;
41e5e07c5fed Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	283
41e5e07c5fed Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	284 case VOC_SILENCE:
385 9efb760c4a6b FIXME removal and cleanups. Ryan C. Gordon <icculus@icculus.org> parents: 377 diff changeset	285 if (!voc_readbytes(src, v, &period, sizeof (period)))
14 41e5e07c5fed Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	286 return 0;
385 9efb760c4a6b FIXME removal and cleanups. Ryan C. Gordon <icculus@icculus.org> parents: 377 diff changeset	287
14 41e5e07c5fed Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	288 period = SDL_SwapLE16(period);
41e5e07c5fed Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	289
385 9efb760c4a6b FIXME removal and cleanups. Ryan C. Gordon <icculus@icculus.org> parents: 377 diff changeset	290 if (!voc_readbytes(src, v, &uc, sizeof (uc)))
14 41e5e07c5fed Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	291 return 0;
385 9efb760c4a6b FIXME removal and cleanups. Ryan C. Gordon <icculus@icculus.org> parents: 377 diff changeset	292
387 fb519e6028e3 Changed all the Sound_SetError() calls to __Sound_SetError (or BAIL_MACRO) Ryan C. Gordon <icculus@icculus.org>* parents: 385 diff changeset	293 BAIL_IF_MACRO(uc == 0, "VOC: silence sample rate is zero", 0);
14 41e5e07c5fed Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	294
41e5e07c5fed Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	295 /*
41e5e07c5fed Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	296 * Some silence-packed files have gratuitously
41e5e07c5fed Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	297 * different sample rate codes in silence.
41e5e07c5fed Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	298 * Adjust period.
41e5e07c5fed Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	299 */
41e5e07c5fed Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	300 if ((v->rate != -1) && (uc != v->rate))
41e5e07c5fed Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	301 period = (period * (256 - uc))/(256 - v->rate);
41e5e07c5fed Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	302 else
41e5e07c5fed Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	303 v->rate = uc;
41e5e07c5fed Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	304 v->rest = period;
41e5e07c5fed Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	305 v->silent = 1;
41e5e07c5fed Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	306 return 1;
41e5e07c5fed Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	307
41e5e07c5fed Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	308 case VOC_LOOP:
41e5e07c5fed Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	309 case VOC_LOOPEND:
41e5e07c5fed Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	310 for(i = 0; i < sblen; i++) /* skip repeat loops. */
41e5e07c5fed Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	311 {
387 fb519e6028e3 Changed all the Sound_SetError() calls to __Sound_SetError (or BAIL_MACRO) Ryan C. Gordon <icculus@icculus.org>* parents: 385 diff changeset	312 if (!voc_readbytes(src, v, trash, sizeof (Uint8)))
14 41e5e07c5fed Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	313 return 0;
385 9efb760c4a6b FIXME removal and cleanups. Ryan C. Gordon <icculus@icculus.org> parents: 377 diff changeset	314 } /* for */
14 41e5e07c5fed Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	315 break;
41e5e07c5fed Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	316
41e5e07c5fed Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	317 case VOC_EXTENDED:
41e5e07c5fed Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	318 /* An Extended block is followed by a data block */
41e5e07c5fed Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	319 /* Set this byte so we know to use the rate */
41e5e07c5fed Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	320 /* value from the extended block and not the */
41e5e07c5fed Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	321 /* data block. */
41e5e07c5fed Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	322 v->extended = 1;
385 9efb760c4a6b FIXME removal and cleanups. Ryan C. Gordon <icculus@icculus.org> parents: 377 diff changeset	323 if (!voc_readbytes(src, v, &new_rate_short, sizeof (Uint16)))
14 41e5e07c5fed Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	324 return 0;
385 9efb760c4a6b FIXME removal and cleanups. Ryan C. Gordon <icculus@icculus.org> parents: 377 diff changeset	325
14 41e5e07c5fed Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	326 new_rate_short = SDL_SwapLE16(new_rate_short);
387 fb519e6028e3 Changed all the Sound_SetError() calls to __Sound_SetError (or BAIL_MACRO) Ryan C. Gordon <icculus@icculus.org>* parents: 385 diff changeset	327 BAIL_IF_MACRO(!new_rate_short, "VOC: sample rate is zero", 0);
fb519e6028e3 Changed all the Sound_SetError() calls to __Sound_SetError (or BAIL_MACRO) Ryan C. Gordon <icculus@icculus.org>* parents: 385 diff changeset	328
14 41e5e07c5fed Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	329 if ((v->rate != -1) && (new_rate_short != v->rate))
387 fb519e6028e3 Changed all the Sound_SetError() calls to __Sound_SetError (or BAIL_MACRO) Ryan C. Gordon <icculus@icculus.org>* parents: 385 diff changeset	330 BAIL_MACRO("VOC: sample rate codes differ", 0);
fb519e6028e3 Changed all the Sound_SetError() calls to __Sound_SetError (or BAIL_MACRO) Ryan C. Gordon <icculus@icculus.org>* parents: 385 diff changeset	331
14 41e5e07c5fed Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	332 v->rate = new_rate_short;
41e5e07c5fed Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	333
385 9efb760c4a6b FIXME removal and cleanups. Ryan C. Gordon <icculus@icculus.org> parents: 377 diff changeset	334 if (!voc_readbytes(src, v, &uc, sizeof (uc)))
14 41e5e07c5fed Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	335 return 0;
41e5e07c5fed Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	336
387 fb519e6028e3 Changed all the Sound_SetError() calls to __Sound_SetError (or BAIL_MACRO) Ryan C. Gordon <icculus@icculus.org>* parents: 385 diff changeset	337 BAIL_IF_MACRO(uc != 0, "VOC: only supports 8-bit data", 0);
14 41e5e07c5fed Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	338
385 9efb760c4a6b FIXME removal and cleanups. Ryan C. Gordon <icculus@icculus.org> parents: 377 diff changeset	339 if (!voc_readbytes(src, v, &uc, sizeof (uc)))
14 41e5e07c5fed Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	340 return 0;
41e5e07c5fed Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	341
41e5e07c5fed Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	342 if (uc)
41e5e07c5fed Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	343 sample->actual.channels = 2; /* Stereo */
385 9efb760c4a6b FIXME removal and cleanups. Ryan C. Gordon <icculus@icculus.org> parents: 377 diff changeset	344
14 41e5e07c5fed Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	345 /* Needed number of channels before finishing
41e5e07c5fed Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	346 compute for rate */
41e5e07c5fed Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	347 sample->actual.rate =
41e5e07c5fed Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	348 (256000000L/(65536L - v->rate)) / sample->actual.channels;
41e5e07c5fed Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	349 /* An extended block must be followed by a data */
41e5e07c5fed Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	350 /* block to be valid so loop back to top so it */
41e5e07c5fed Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	351 /* can be grabed. */
41e5e07c5fed Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	352 continue;
41e5e07c5fed Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	353
41e5e07c5fed Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	354 case VOC_MARKER:
385 9efb760c4a6b FIXME removal and cleanups. Ryan C. Gordon <icculus@icculus.org> parents: 377 diff changeset	355 if (!voc_readbytes(src, v, trash, sizeof (Uint8) * 2))
14 41e5e07c5fed Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	356 return 0;
41e5e07c5fed Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	357
41e5e07c5fed Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	358 /* Falling! Falling! */
41e5e07c5fed Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	359
41e5e07c5fed Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	360 default: /* text block or other krapola. */
387 fb519e6028e3 Changed all the Sound_SetError() calls to __Sound_SetError (or BAIL_MACRO) Ryan C. Gordon <icculus@icculus.org>* parents: 385 diff changeset	361 for(i = 0; i < sblen; i++) /* skip repeat loops. */
fb519e6028e3 Changed all the Sound_SetError() calls to __Sound_SetError (or BAIL_MACRO) Ryan C. Gordon <icculus@icculus.org>* parents: 385 diff changeset	362 {
fb519e6028e3 Changed all the Sound_SetError() calls to __Sound_SetError (or BAIL_MACRO) Ryan C. Gordon <icculus@icculus.org>* parents: 385 diff changeset	363 if (!voc_readbytes(src, v, trash, sizeof (Uint8)))
fb519e6028e3 Changed all the Sound_SetError() calls to __Sound_SetError (or BAIL_MACRO) Ryan C. Gordon <icculus@icculus.org>* parents: 385 diff changeset	364 return 0;
fb519e6028e3 Changed all the Sound_SetError() calls to __Sound_SetError (or BAIL_MACRO) Ryan C. Gordon <icculus@icculus.org>* parents: 385 diff changeset	365 } /* for */
14 41e5e07c5fed Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	366
41e5e07c5fed Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	367 if (block == VOC_TEXT)
41e5e07c5fed Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	368 continue; /* get next block */
385 9efb760c4a6b FIXME removal and cleanups. Ryan C. Gordon <icculus@icculus.org> parents: 377 diff changeset	369 } /* switch */
9efb760c4a6b FIXME removal and cleanups. Ryan C. Gordon <icculus@icculus.org> parents: 377 diff changeset	370 } /* while */
14 41e5e07c5fed Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	371
41e5e07c5fed Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	372 return 1;
335 f6475949cd59 Implemented seek method. Ryan C. Gordon <icculus@icculus.org> parents: 306 diff changeset	373 } /* voc_get_block */
14 41e5e07c5fed Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	374
41e5e07c5fed Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	375
335 f6475949cd59 Implemented seek method. Ryan C. Gordon <icculus@icculus.org> parents: 306 diff changeset	376 static int voc_read_waveform(Sound_Sample *sample, int fill_buf, Uint32 max)
14 41e5e07c5fed Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	377 {
41e5e07c5fed Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	378 Sound_SampleInternal internal = (Sound_SampleInternal ) sample->opaque;
41e5e07c5fed Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	379 SDL_RWops *src = internal->rw;
41e5e07c5fed Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	380 vs_t v = (vs_t ) internal->decoder_private;
41e5e07c5fed Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	381 int done = 0;
41e5e07c5fed Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	382 Uint8 silence = 0x80;
41e5e07c5fed Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	383 Uint8 *buf = internal->buffer;
41e5e07c5fed Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	384
41e5e07c5fed Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	385 if (v->rest == 0)
41e5e07c5fed Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	386 {
468 cd46c97e58bc Fixed broken VOC decoder...would always dereference NULL during VOC_open(). Ryan C. Gordon <icculus@icculus.org> parents: 449 diff changeset	387 if (!voc_get_block(sample, v))
14 41e5e07c5fed Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	388 return 0;
335 f6475949cd59 Implemented seek method. Ryan C. Gordon <icculus@icculus.org> parents: 306 diff changeset	389 } /* if */
14 41e5e07c5fed Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	390
41e5e07c5fed Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	391 if (v->rest == 0)
41e5e07c5fed Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	392 return 0;
41e5e07c5fed Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	393
335 f6475949cd59 Implemented seek method. Ryan C. Gordon <icculus@icculus.org> parents: 306 diff changeset	394 max = (v->rest < max) ? v->rest : max;
f6475949cd59 Implemented seek method. Ryan C. Gordon <icculus@icculus.org> parents: 306 diff changeset	395
14 41e5e07c5fed Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	396 if (v->silent)
41e5e07c5fed Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	397 {
41e5e07c5fed Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	398 if (v->size == ST_SIZE_WORD)
41e5e07c5fed Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	399 silence = 0x00;
41e5e07c5fed Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	400
41e5e07c5fed Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	401 /* Fill in silence */
335 f6475949cd59 Implemented seek method. Ryan C. Gordon <icculus@icculus.org> parents: 306 diff changeset	402 if (fill_buf)
f6475949cd59 Implemented seek method. Ryan C. Gordon <icculus@icculus.org> parents: 306 diff changeset	403 memset(buf + v->bufpos, silence, max);
f6475949cd59 Implemented seek method. Ryan C. Gordon <icculus@icculus.org> parents: 306 diff changeset	404
f6475949cd59 Implemented seek method. Ryan C. Gordon <icculus@icculus.org> parents: 306 diff changeset	405 done = max;
f6475949cd59 Implemented seek method. Ryan C. Gordon <icculus@icculus.org> parents: 306 diff changeset	406 v->rest -= done;
f6475949cd59 Implemented seek method. Ryan C. Gordon <icculus@icculus.org> parents: 306 diff changeset	407 } /* if */
14 41e5e07c5fed Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	408
41e5e07c5fed Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	409 else
41e5e07c5fed Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	410 {
335 f6475949cd59 Implemented seek method. Ryan C. Gordon <icculus@icculus.org> parents: 306 diff changeset	411 if (fill_buf)
385 9efb760c4a6b FIXME removal and cleanups. Ryan C. Gordon <icculus@icculus.org> parents: 377 diff changeset	412 {
335 f6475949cd59 Implemented seek method. Ryan C. Gordon <icculus@icculus.org> parents: 306 diff changeset	413 done = SDL_RWread(src, buf + v->bufpos, 1, max);
385 9efb760c4a6b FIXME removal and cleanups. Ryan C. Gordon <icculus@icculus.org> parents: 377 diff changeset	414 if (done < max)
9efb760c4a6b FIXME removal and cleanups. Ryan C. Gordon <icculus@icculus.org> parents: 377 diff changeset	415 {
387 fb519e6028e3 Changed all the Sound_SetError() calls to __Sound_SetError (or BAIL_MACRO) Ryan C. Gordon <icculus@icculus.org>* parents: 385 diff changeset	416 __Sound_SetError("VOC: i/o error");
385 9efb760c4a6b FIXME removal and cleanups. Ryan C. Gordon <icculus@icculus.org> parents: 377 diff changeset	417 sample->flags \|= SOUND_SAMPLEFLAG_ERROR;
9efb760c4a6b FIXME removal and cleanups. Ryan C. Gordon <icculus@icculus.org> parents: 377 diff changeset	418 } /* if */
9efb760c4a6b FIXME removal and cleanups. Ryan C. Gordon <icculus@icculus.org> parents: 377 diff changeset	419 } /* if */
9efb760c4a6b FIXME removal and cleanups. Ryan C. Gordon <icculus@icculus.org> parents: 377 diff changeset	420
335 f6475949cd59 Implemented seek method. Ryan C. Gordon <icculus@icculus.org> parents: 306 diff changeset	421 else
f6475949cd59 Implemented seek method. Ryan C. Gordon <icculus@icculus.org> parents: 306 diff changeset	422 {
f6475949cd59 Implemented seek method. Ryan C. Gordon <icculus@icculus.org> parents: 306 diff changeset	423 int cur, rc;
f6475949cd59 Implemented seek method. Ryan C. Gordon <icculus@icculus.org> parents: 306 diff changeset	424 cur = SDL_RWtell(src);
f6475949cd59 Implemented seek method. Ryan C. Gordon <icculus@icculus.org> parents: 306 diff changeset	425 if (cur >= 0)
f6475949cd59 Implemented seek method. Ryan C. Gordon <icculus@icculus.org> parents: 306 diff changeset	426 {
f6475949cd59 Implemented seek method. Ryan C. Gordon <icculus@icculus.org> parents: 306 diff changeset	427 rc = SDL_RWseek(src, max, SEEK_CUR);
f6475949cd59 Implemented seek method. Ryan C. Gordon <icculus@icculus.org> parents: 306 diff changeset	428 if (rc >= 0)
f6475949cd59 Implemented seek method. Ryan C. Gordon <icculus@icculus.org> parents: 306 diff changeset	429 done = rc - cur;
385 9efb760c4a6b FIXME removal and cleanups. Ryan C. Gordon <icculus@icculus.org> parents: 377 diff changeset	430 else
9efb760c4a6b FIXME removal and cleanups. Ryan C. Gordon <icculus@icculus.org> parents: 377 diff changeset	431 {
387 fb519e6028e3 Changed all the Sound_SetError() calls to __Sound_SetError (or BAIL_MACRO) Ryan C. Gordon <icculus@icculus.org>* parents: 385 diff changeset	432 __Sound_SetError("VOC: seek error");
385 9efb760c4a6b FIXME removal and cleanups. Ryan C. Gordon <icculus@icculus.org> parents: 377 diff changeset	433 sample->flags \|= SOUND_SAMPLEFLAG_ERROR;
9efb760c4a6b FIXME removal and cleanups. Ryan C. Gordon <icculus@icculus.org> parents: 377 diff changeset	434 } /* else */
335 f6475949cd59 Implemented seek method. Ryan C. Gordon <icculus@icculus.org> parents: 306 diff changeset	435 } /* if */
f6475949cd59 Implemented seek method. Ryan C. Gordon <icculus@icculus.org> parents: 306 diff changeset	436 } /* else */
f6475949cd59 Implemented seek method. Ryan C. Gordon <icculus@icculus.org> parents: 306 diff changeset	437
14 41e5e07c5fed Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	438 v->rest -= done;
41e5e07c5fed Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	439 v->bufpos += done;
335 f6475949cd59 Implemented seek method. Ryan C. Gordon <icculus@icculus.org> parents: 306 diff changeset	440 } /* else */
14 41e5e07c5fed Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	441
385 9efb760c4a6b FIXME removal and cleanups. Ryan C. Gordon <icculus@icculus.org> parents: 377 diff changeset	442 return(done);
22 f6e679afe88b Byte ordering fix, changed voc_read to voc_read_waveform, and cleaned up Ryan C. Gordon <icculus@icculus.org> parents: 14 diff changeset	443 } /* voc_read_waveform */
14 41e5e07c5fed Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	444
41e5e07c5fed Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	445
41e5e07c5fed Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	446 static int VOC_open(Sound_Sample sample, const char ext)
41e5e07c5fed Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	447 {
41e5e07c5fed Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	448 Sound_SampleInternal internal = (Sound_SampleInternal ) sample->opaque;
41e5e07c5fed Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	449 vs_t *v = NULL;
41e5e07c5fed Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	450
41e5e07c5fed Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	451 if (!voc_check_header(internal->rw))
41e5e07c5fed Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	452 return(0);
41e5e07c5fed Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	453
41e5e07c5fed Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	454 v = (vs_t *) malloc(sizeof (vs_t));
41e5e07c5fed Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	455 BAIL_IF_MACRO(v == NULL, ERR_OUT_OF_MEMORY, 0);
41e5e07c5fed Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	456 memset(v, '\0', sizeof (vs_t));
41e5e07c5fed Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	457
224 1bafef18dabf Implemented rewind method. Ryan C. Gordon <icculus@icculus.org> parents: 221 diff changeset	458 v->start_pos = SDL_RWtell(internal->rw);
14 41e5e07c5fed Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	459 v->rate = -1;
468 cd46c97e58bc Fixed broken VOC decoder...would always dereference NULL during VOC_open(). Ryan C. Gordon <icculus@icculus.org> parents: 449 diff changeset	460 if (!voc_get_block(sample, v))
14 41e5e07c5fed Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	461 {
41e5e07c5fed Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	462 free(v);
41e5e07c5fed Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	463 return(0);
41e5e07c5fed Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	464 } /* if */
41e5e07c5fed Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	465
41e5e07c5fed Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	466 if (v->rate == -1)
41e5e07c5fed Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	467 {
41e5e07c5fed Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	468 free(v);
387 fb519e6028e3 Changed all the Sound_SetError() calls to __Sound_SetError (or BAIL_MACRO) Ryan C. Gordon <icculus@icculus.org>* parents: 385 diff changeset	469 BAIL_MACRO("VOC: data had no sound!", 0);
14 41e5e07c5fed Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	470 } /* if */
41e5e07c5fed Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	471
62 b13fafb976be Changed _D macro to DBGSND. Ryan C. Gordon <icculus@icculus.org> parents: 47 diff changeset	472 SNDDBG(("VOC: Accepting data stream.\n"));
14 41e5e07c5fed Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	473 sample->actual.format = (v->size == ST_SIZE_WORD) ? AUDIO_S16LSB:AUDIO_U8;
41e5e07c5fed Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	474 sample->actual.channels = v->channels;
335 f6475949cd59 Implemented seek method. Ryan C. Gordon <icculus@icculus.org> parents: 306 diff changeset	475 sample->flags = SOUND_SAMPLEFLAG_CANSEEK;
449 daeb71a3f1ed Extremely minor cleanup. Ryan C. Gordon <icculus@icculus.org> parents: 401 diff changeset	476 internal->decoder_private = v;
14 41e5e07c5fed Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	477 return(1);
41e5e07c5fed Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	478 } /* VOC_open */
41e5e07c5fed Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	479
41e5e07c5fed Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	480
41e5e07c5fed Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	481 static void VOC_close(Sound_Sample *sample)
41e5e07c5fed Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	482 {
41e5e07c5fed Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	483 Sound_SampleInternal internal = (Sound_SampleInternal ) sample->opaque;
41e5e07c5fed Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	484 free(internal->decoder_private);
41e5e07c5fed Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	485 } /* VOC_close */
41e5e07c5fed Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	486
41e5e07c5fed Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	487
41e5e07c5fed Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	488 static Uint32 VOC_read(Sound_Sample *sample)
41e5e07c5fed Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	489 {
41e5e07c5fed Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	490 Sound_SampleInternal internal = (Sound_SampleInternal ) sample->opaque;
41e5e07c5fed Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	491 vs_t v = (vs_t ) internal->decoder_private;
41e5e07c5fed Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	492
41e5e07c5fed Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	493 v->bufpos = 0;
41e5e07c5fed Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	494 while (v->bufpos < internal->buffer_size)
41e5e07c5fed Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	495 {
335 f6475949cd59 Implemented seek method. Ryan C. Gordon <icculus@icculus.org> parents: 306 diff changeset	496 Uint32 rc = voc_read_waveform(sample, 1, internal->buffer_size);
385 9efb760c4a6b FIXME removal and cleanups. Ryan C. Gordon <icculus@icculus.org> parents: 377 diff changeset	497 if (rc == 0)
14 41e5e07c5fed Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	498 {
385 9efb760c4a6b FIXME removal and cleanups. Ryan C. Gordon <icculus@icculus.org> parents: 377 diff changeset	499 sample->flags \|= (v->error) ?
9efb760c4a6b FIXME removal and cleanups. Ryan C. Gordon <icculus@icculus.org> parents: 377 diff changeset	500 SOUND_SAMPLEFLAG_ERROR :
9efb760c4a6b FIXME removal and cleanups. Ryan C. Gordon <icculus@icculus.org> parents: 377 diff changeset	501 SOUND_SAMPLEFLAG_EOF;
14 41e5e07c5fed Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	502 break;
41e5e07c5fed Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	503 } /* if */
41e5e07c5fed Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	504
468 cd46c97e58bc Fixed broken VOC decoder...would always dereference NULL during VOC_open(). Ryan C. Gordon <icculus@icculus.org> parents: 449 diff changeset	505 if (!voc_get_block(sample, v))
14 41e5e07c5fed Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	506 {
385 9efb760c4a6b FIXME removal and cleanups. Ryan C. Gordon <icculus@icculus.org> parents: 377 diff changeset	507 sample->flags \|= (v->error) ?
9efb760c4a6b FIXME removal and cleanups. Ryan C. Gordon <icculus@icculus.org> parents: 377 diff changeset	508 SOUND_SAMPLEFLAG_ERROR :
9efb760c4a6b FIXME removal and cleanups. Ryan C. Gordon <icculus@icculus.org> parents: 377 diff changeset	509 SOUND_SAMPLEFLAG_EOF;
14 41e5e07c5fed Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	510 break;
41e5e07c5fed Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	511 } /* if */
41e5e07c5fed Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	512 } /* while */
41e5e07c5fed Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	513
41e5e07c5fed Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	514 return(v->bufpos);
41e5e07c5fed Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	515 } /* VOC_read */
41e5e07c5fed Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	516
221 c9772a9f5271 Initial implementation or stubs for rewind method. Other cleanups. Ryan C. Gordon <icculus@icculus.org> parents: 184 diff changeset	517
c9772a9f5271 Initial implementation or stubs for rewind method. Other cleanups. Ryan C. Gordon <icculus@icculus.org> parents: 184 diff changeset	518 static int VOC_rewind(Sound_Sample *sample)
c9772a9f5271 Initial implementation or stubs for rewind method. Other cleanups. Ryan C. Gordon <icculus@icculus.org> parents: 184 diff changeset	519 {
224 1bafef18dabf Implemented rewind method. Ryan C. Gordon <icculus@icculus.org> parents: 221 diff changeset	520 Sound_SampleInternal internal = (Sound_SampleInternal ) sample->opaque;
1bafef18dabf Implemented rewind method. Ryan C. Gordon <icculus@icculus.org> parents: 221 diff changeset	521 vs_t v = (vs_t ) internal->decoder_private;
1bafef18dabf Implemented rewind method. Ryan C. Gordon <icculus@icculus.org> parents: 221 diff changeset	522 int rc = SDL_RWseek(internal->rw, v->start_pos, SEEK_SET);
1bafef18dabf Implemented rewind method. Ryan C. Gordon <icculus@icculus.org> parents: 221 diff changeset	523 BAIL_IF_MACRO(rc != v->start_pos, ERR_IO_ERROR, 0);
1bafef18dabf Implemented rewind method. Ryan C. Gordon <icculus@icculus.org> parents: 221 diff changeset	524 v->rest = 0;
1bafef18dabf Implemented rewind method. Ryan C. Gordon <icculus@icculus.org> parents: 221 diff changeset	525 return(1);
221 c9772a9f5271 Initial implementation or stubs for rewind method. Other cleanups. Ryan C. Gordon <icculus@icculus.org> parents: 184 diff changeset	526 } /* VOC_rewind */
c9772a9f5271 Initial implementation or stubs for rewind method. Other cleanups. Ryan C. Gordon <icculus@icculus.org> parents: 184 diff changeset	527
306 c97be6e1bd27 Added framework for Sound_Seek() support. Ryan C. Gordon <icculus@icculus.org> parents: 301 diff changeset	528
c97be6e1bd27 Added framework for Sound_Seek() support. Ryan C. Gordon <icculus@icculus.org> parents: 301 diff changeset	529 static int VOC_seek(Sound_Sample *sample, Uint32 ms)
c97be6e1bd27 Added framework for Sound_Seek() support. Ryan C. Gordon <icculus@icculus.org> parents: 301 diff changeset	530 {
335 f6475949cd59 Implemented seek method. Ryan C. Gordon <icculus@icculus.org> parents: 306 diff changeset	531 /*
f6475949cd59 Implemented seek method. Ryan C. Gordon <icculus@icculus.org> parents: 306 diff changeset	532 * VOCs don't lend themselves well to seeking, since you have to
f6475949cd59 Implemented seek method. Ryan C. Gordon <icculus@icculus.org> parents: 306 diff changeset	533 * parse each section, which is an arbitrary size. The best we can do
f6475949cd59 Implemented seek method. Ryan C. Gordon <icculus@icculus.org> parents: 306 diff changeset	534 * is rewind, set a flag saying not to write the waveforms to a buffer,
f6475949cd59 Implemented seek method. Ryan C. Gordon <icculus@icculus.org> parents: 306 diff changeset	535 * and decode to the point that we want. Ugh. Fortunately, there's
f6475949cd59 Implemented seek method. Ryan C. Gordon <icculus@icculus.org> parents: 306 diff changeset	536 * really no such thing as a large VOC, due to the era and hardware that
f6475949cd59 Implemented seek method. Ryan C. Gordon <icculus@icculus.org> parents: 306 diff changeset	537 * spawned them, so even though this is inefficient, this is still a
f6475949cd59 Implemented seek method. Ryan C. Gordon <icculus@icculus.org> parents: 306 diff changeset	538 * relatively fast operation in most cases.
f6475949cd59 Implemented seek method. Ryan C. Gordon <icculus@icculus.org> parents: 306 diff changeset	539 */
f6475949cd59 Implemented seek method. Ryan C. Gordon <icculus@icculus.org> parents: 306 diff changeset	540
f6475949cd59 Implemented seek method. Ryan C. Gordon <icculus@icculus.org> parents: 306 diff changeset	541 Sound_SampleInternal internal = (Sound_SampleInternal ) sample->opaque;
f6475949cd59 Implemented seek method. Ryan C. Gordon <icculus@icculus.org> parents: 306 diff changeset	542 vs_t v = (vs_t ) internal->decoder_private;
f6475949cd59 Implemented seek method. Ryan C. Gordon <icculus@icculus.org> parents: 306 diff changeset	543 int offset = __Sound_convertMsToBytePos(&sample->actual, ms);
f6475949cd59 Implemented seek method. Ryan C. Gordon <icculus@icculus.org> parents: 306 diff changeset	544 int origpos = SDL_RWtell(internal->rw);
f6475949cd59 Implemented seek method. Ryan C. Gordon <icculus@icculus.org> parents: 306 diff changeset	545 int origrest = v->rest;
f6475949cd59 Implemented seek method. Ryan C. Gordon <icculus@icculus.org> parents: 306 diff changeset	546
f6475949cd59 Implemented seek method. Ryan C. Gordon <icculus@icculus.org> parents: 306 diff changeset	547 BAIL_IF_MACRO(!VOC_rewind(sample), NULL, 0);
f6475949cd59 Implemented seek method. Ryan C. Gordon <icculus@icculus.org> parents: 306 diff changeset	548
f6475949cd59 Implemented seek method. Ryan C. Gordon <icculus@icculus.org> parents: 306 diff changeset	549 v->bufpos = 0;
f6475949cd59 Implemented seek method. Ryan C. Gordon <icculus@icculus.org> parents: 306 diff changeset	550
f6475949cd59 Implemented seek method. Ryan C. Gordon <icculus@icculus.org> parents: 306 diff changeset	551 while (offset > 0)
f6475949cd59 Implemented seek method. Ryan C. Gordon <icculus@icculus.org> parents: 306 diff changeset	552 {
f6475949cd59 Implemented seek method. Ryan C. Gordon <icculus@icculus.org> parents: 306 diff changeset	553 Uint32 rc = voc_read_waveform(sample, 0, offset);
468 cd46c97e58bc Fixed broken VOC decoder...would always dereference NULL during VOC_open(). Ryan C. Gordon <icculus@icculus.org> parents: 449 diff changeset	554 if ( (rc == 0) \|\| (!voc_get_block(sample, v)) )
335 f6475949cd59 Implemented seek method. Ryan C. Gordon <icculus@icculus.org> parents: 306 diff changeset	555 {
f6475949cd59 Implemented seek method. Ryan C. Gordon <icculus@icculus.org> parents: 306 diff changeset	556 SDL_RWseek(internal->rw, origpos, SEEK_SET);
f6475949cd59 Implemented seek method. Ryan C. Gordon <icculus@icculus.org> parents: 306 diff changeset	557 v->rest = origrest;
f6475949cd59 Implemented seek method. Ryan C. Gordon <icculus@icculus.org> parents: 306 diff changeset	558 return(0);
f6475949cd59 Implemented seek method. Ryan C. Gordon <icculus@icculus.org> parents: 306 diff changeset	559 } /* if */
f6475949cd59 Implemented seek method. Ryan C. Gordon <icculus@icculus.org> parents: 306 diff changeset	560
f6475949cd59 Implemented seek method. Ryan C. Gordon <icculus@icculus.org> parents: 306 diff changeset	561 offset -= rc;
f6475949cd59 Implemented seek method. Ryan C. Gordon <icculus@icculus.org> parents: 306 diff changeset	562 } /* while */
f6475949cd59 Implemented seek method. Ryan C. Gordon <icculus@icculus.org> parents: 306 diff changeset	563
f6475949cd59 Implemented seek method. Ryan C. Gordon <icculus@icculus.org> parents: 306 diff changeset	564 return(1);
306 c97be6e1bd27 Added framework for Sound_Seek() support. Ryan C. Gordon <icculus@icculus.org> parents: 301 diff changeset	565 } /* VOC_seek */
c97be6e1bd27 Added framework for Sound_Seek() support. Ryan C. Gordon <icculus@icculus.org> parents: 301 diff changeset	566
64 40006625142a Changes in preparation of autoconf support. Ryan C. Gordon <icculus@icculus.org> parents: 62 diff changeset	567 #endif /* SOUND_SUPPORTS_VOC */
14 41e5e07c5fed Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	568
41e5e07c5fed Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	569 /* end of voc.c ... */

Mercurial > SDL_sound_CoreAudio

annotate decoders/voc.c @ 525:50bb9a6cebfe stable-1.0