SDL_sound_CoreAudio: decoders/wav.c annotate

annotate decoders/wav.c @ 147:9d122da5f5a9

Updated.

author	Ryan C. Gordon <icculus@icculus.org>
date	Tue, 23 Oct 2001 18:29:00 +0000
parents	e46e31fdecfd
children	1df5c106504e

rev	line source
17 102cf61c0816 Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	1 /*
102cf61c0816 Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	2 * SDL_sound -- An abstract sound format decoding API.
102cf61c0816 Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	3 * Copyright (C) 2001 Ryan C. Gordon.
102cf61c0816 Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	4 *
102cf61c0816 Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	5 * This library is free software; you can redistribute it and/or
102cf61c0816 Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	6 * modify it under the terms of the GNU Lesser General Public
102cf61c0816 Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	7 * License as published by the Free Software Foundation; either
102cf61c0816 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.
102cf61c0816 Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	9 *
102cf61c0816 Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	10 * This library is distributed in the hope that it will be useful,
102cf61c0816 Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
102cf61c0816 Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
102cf61c0816 Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	13 * Lesser General Public License for more details.
102cf61c0816 Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	14 *
102cf61c0816 Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	15 * You should have received a copy of the GNU Lesser General Public
102cf61c0816 Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	16 * License along with this library; if not, write to the Free Software
102cf61c0816 Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	17 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
102cf61c0816 Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	18 */
102cf61c0816 Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	19
102cf61c0816 Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	20 /*
102cf61c0816 Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	21 * WAV decoder for SDL_sound.
102cf61c0816 Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	22 *
102cf61c0816 Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	23 * This driver handles Microsoft .WAVs, in as many of the thousands of
102cf61c0816 Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	24 * variations as we can.
102cf61c0816 Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	25 *
102cf61c0816 Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	26 * Please see the file LICENSE in the source's root directory.
102cf61c0816 Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	27 *
102cf61c0816 Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	28 * This file written by Ryan C. Gordon. (icculus@clutteredmind.org)
102cf61c0816 Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	29 */
102cf61c0816 Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	30
106 40de367eb59e Changing my include structure to do this right. Ryan C. Gordon <icculus@icculus.org> parents: 104 diff changeset	31 #if HAVE_CONFIG_H
40de367eb59e Changing my include structure to do this right. Ryan C. Gordon <icculus@icculus.org> parents: 104 diff changeset	32 # include <config.h>
40de367eb59e Changing my include structure to do this right. Ryan C. Gordon <icculus@icculus.org> parents: 104 diff changeset	33 #endif
100 6d9fdec2f708 added config.h, added --enable-debug flag, various other changes to the build system fingolfin parents: 64 diff changeset	34
104 103cfcb3c014 Updated to fix build system problem. Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	35 #ifdef SOUND_SUPPORTS_WAV
103cfcb3c014 Updated to fix build system problem. Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	36
17 102cf61c0816 Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	37 #include <stdio.h>
102cf61c0816 Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	38 #include <stdlib.h>
102cf61c0816 Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	39 #include <string.h>
102cf61c0816 Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	40 #include <assert.h>
102cf61c0816 Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	41
106 40de367eb59e Changing my include structure to do this right. Ryan C. Gordon <icculus@icculus.org> parents: 104 diff changeset	42 #include "SDL_sound.h"
40de367eb59e Changing my include structure to do this right. Ryan C. Gordon <icculus@icculus.org> parents: 104 diff changeset	43
40de367eb59e Changing my include structure to do this right. Ryan C. Gordon <icculus@icculus.org> parents: 104 diff changeset	44 #define __SDL_SOUND_INTERNAL__
40de367eb59e Changing my include structure to do this right. Ryan C. Gordon <icculus@icculus.org> parents: 104 diff changeset	45 #include "SDL_sound_internal.h"
40de367eb59e Changing my include structure to do this right. Ryan C. Gordon <icculus@icculus.org> parents: 104 diff changeset	46
47 ea58bc3b15d7 Added init() and quit() methods. Ryan C. Gordon <icculus@icculus.org> parents: 40 diff changeset	47 static int WAV_init(void);
ea58bc3b15d7 Added init() and quit() methods. Ryan C. Gordon <icculus@icculus.org> parents: 40 diff changeset	48 static void WAV_quit(void);
17 102cf61c0816 Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	49 static int WAV_open(Sound_Sample sample, const char ext);
102cf61c0816 Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	50 static void WAV_close(Sound_Sample *sample);
102cf61c0816 Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	51 static Uint32 WAV_read(Sound_Sample *sample);
102cf61c0816 Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	52
102cf61c0816 Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	53 const Sound_DecoderFunctions __Sound_DecoderFunctions_WAV =
102cf61c0816 Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	54 {
102cf61c0816 Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	55 {
102cf61c0816 Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	56 "WAV",
102cf61c0816 Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	57 "Microsoft WAVE audio format",
102cf61c0816 Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	58 "Ryan C. Gordon <icculus@clutteredmind.org>",
102cf61c0816 Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	59 "http://www.icculus.org/SDL_sound/"
102cf61c0816 Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	60 },
102cf61c0816 Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	61
47 ea58bc3b15d7 Added init() and quit() methods. Ryan C. Gordon <icculus@icculus.org> parents: 40 diff changeset	62 WAV_init, /* init() method */
ea58bc3b15d7 Added init() and quit() methods. Ryan C. Gordon <icculus@icculus.org> parents: 40 diff changeset	63 WAV_quit, /* quit() method */
ea58bc3b15d7 Added init() and quit() methods. Ryan C. Gordon <icculus@icculus.org> parents: 40 diff changeset	64 WAV_open, /* open() method */
ea58bc3b15d7 Added init() and quit() methods. Ryan C. Gordon <icculus@icculus.org> parents: 40 diff changeset	65 WAV_close, /* close() method */
ea58bc3b15d7 Added init() and quit() methods. Ryan C. Gordon <icculus@icculus.org> parents: 40 diff changeset	66 WAV_read /* read() method */
17 102cf61c0816 Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	67 };
102cf61c0816 Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	68
47 ea58bc3b15d7 Added init() and quit() methods. Ryan C. Gordon <icculus@icculus.org> parents: 40 diff changeset	69 static int WAV_init(void)
ea58bc3b15d7 Added init() and quit() methods. Ryan C. Gordon <icculus@icculus.org> parents: 40 diff changeset	70 {
ea58bc3b15d7 Added init() and quit() methods. Ryan C. Gordon <icculus@icculus.org> parents: 40 diff changeset	71 return(1); /* always succeeds. */
ea58bc3b15d7 Added init() and quit() methods. Ryan C. Gordon <icculus@icculus.org> parents: 40 diff changeset	72 } /* WAV_init */
ea58bc3b15d7 Added init() and quit() methods. Ryan C. Gordon <icculus@icculus.org> parents: 40 diff changeset	73
ea58bc3b15d7 Added init() and quit() methods. Ryan C. Gordon <icculus@icculus.org> parents: 40 diff changeset	74
ea58bc3b15d7 Added init() and quit() methods. Ryan C. Gordon <icculus@icculus.org> parents: 40 diff changeset	75 static void WAV_quit(void)
ea58bc3b15d7 Added init() and quit() methods. Ryan C. Gordon <icculus@icculus.org> parents: 40 diff changeset	76 {
ea58bc3b15d7 Added init() and quit() methods. Ryan C. Gordon <icculus@icculus.org> parents: 40 diff changeset	77 /* it's a no-op. */
ea58bc3b15d7 Added init() and quit() methods. Ryan C. Gordon <icculus@icculus.org> parents: 40 diff changeset	78 } /* WAV_quit */
ea58bc3b15d7 Added init() and quit() methods. Ryan C. Gordon <icculus@icculus.org> parents: 40 diff changeset	79
ea58bc3b15d7 Added init() and quit() methods. Ryan C. Gordon <icculus@icculus.org> parents: 40 diff changeset	80
124 e46e31fdecfd Restructured to handle multiple formats. Ryan C. Gordon <icculus@icculus.org> parents: 106 diff changeset	81
e46e31fdecfd Restructured to handle multiple formats. Ryan C. Gordon <icculus@icculus.org> parents: 106 diff changeset	82 /* Chunk management code... */
e46e31fdecfd Restructured to handle multiple formats. Ryan C. Gordon <icculus@icculus.org> parents: 106 diff changeset	83
e46e31fdecfd Restructured to handle multiple formats. Ryan C. Gordon <icculus@icculus.org> parents: 106 diff changeset	84 #define riffID 0x46464952 /* "RIFF", in ascii. */
e46e31fdecfd Restructured to handle multiple formats. Ryan C. Gordon <icculus@icculus.org> parents: 106 diff changeset	85 #define waveID 0x45564157 /* "WAVE", in ascii. */
e46e31fdecfd Restructured to handle multiple formats. Ryan C. Gordon <icculus@icculus.org> parents: 106 diff changeset	86
e46e31fdecfd Restructured to handle multiple formats. Ryan C. Gordon <icculus@icculus.org> parents: 106 diff changeset	87
e46e31fdecfd Restructured to handle multiple formats. Ryan C. Gordon <icculus@icculus.org> parents: 106 diff changeset	88 /*****************************************************************************
e46e31fdecfd Restructured to handle multiple formats. Ryan C. Gordon <icculus@icculus.org> parents: 106 diff changeset	89 * The FORMAT chunk... *
e46e31fdecfd Restructured to handle multiple formats. Ryan C. Gordon <icculus@icculus.org> parents: 106 diff changeset	90 *****************************************************************************/
e46e31fdecfd Restructured to handle multiple formats. Ryan C. Gordon <icculus@icculus.org> parents: 106 diff changeset	91
e46e31fdecfd Restructured to handle multiple formats. Ryan C. Gordon <icculus@icculus.org> parents: 106 diff changeset	92 #define fmtID 0x20746D66 /* "fmt ", in ascii. */
e46e31fdecfd Restructured to handle multiple formats. Ryan C. Gordon <icculus@icculus.org> parents: 106 diff changeset	93
e46e31fdecfd Restructured to handle multiple formats. Ryan C. Gordon <icculus@icculus.org> parents: 106 diff changeset	94 #define FMT_NORMAL 0x0001 /* Uncompressed waveform data. */
e46e31fdecfd Restructured to handle multiple formats. Ryan C. Gordon <icculus@icculus.org> parents: 106 diff changeset	95 #define FMT_ADPCM 0x0002 /* ADPCM compressed waveform data. */
e46e31fdecfd Restructured to handle multiple formats. Ryan C. Gordon <icculus@icculus.org> parents: 106 diff changeset	96
e46e31fdecfd Restructured to handle multiple formats. Ryan C. Gordon <icculus@icculus.org> parents: 106 diff changeset	97 typedef struct {
e46e31fdecfd Restructured to handle multiple formats. Ryan C. Gordon <icculus@icculus.org> parents: 106 diff changeset	98 Uint16 iCoef1;
e46e31fdecfd Restructured to handle multiple formats. Ryan C. Gordon <icculus@icculus.org> parents: 106 diff changeset	99 Uint16 iCoef2;
e46e31fdecfd Restructured to handle multiple formats. Ryan C. Gordon <icculus@icculus.org> parents: 106 diff changeset	100 } ADPCMCOEFSET;
e46e31fdecfd Restructured to handle multiple formats. Ryan C. Gordon <icculus@icculus.org> parents: 106 diff changeset	101
e46e31fdecfd Restructured to handle multiple formats. Ryan C. Gordon <icculus@icculus.org> parents: 106 diff changeset	102 typedef struct S_FMT_T
e46e31fdecfd Restructured to handle multiple formats. Ryan C. Gordon <icculus@icculus.org> parents: 106 diff changeset	103 {
e46e31fdecfd Restructured to handle multiple formats. Ryan C. Gordon <icculus@icculus.org> parents: 106 diff changeset	104 Uint32 chunkID;
e46e31fdecfd Restructured to handle multiple formats. Ryan C. Gordon <icculus@icculus.org> parents: 106 diff changeset	105 Sint32 chunkSize;
e46e31fdecfd Restructured to handle multiple formats. Ryan C. Gordon <icculus@icculus.org> parents: 106 diff changeset	106 Sint16 wFormatTag;
e46e31fdecfd Restructured to handle multiple formats. Ryan C. Gordon <icculus@icculus.org> parents: 106 diff changeset	107 Uint16 wChannels;
e46e31fdecfd Restructured to handle multiple formats. Ryan C. Gordon <icculus@icculus.org> parents: 106 diff changeset	108 Uint32 dwSamplesPerSec;
e46e31fdecfd Restructured to handle multiple formats. Ryan C. Gordon <icculus@icculus.org> parents: 106 diff changeset	109 Uint32 dwAvgBytesPerSec;
e46e31fdecfd Restructured to handle multiple formats. Ryan C. Gordon <icculus@icculus.org> parents: 106 diff changeset	110 Uint16 wBlockAlign;
e46e31fdecfd Restructured to handle multiple formats. Ryan C. Gordon <icculus@icculus.org> parents: 106 diff changeset	111 Uint16 wBitsPerSample;
e46e31fdecfd Restructured to handle multiple formats. Ryan C. Gordon <icculus@icculus.org> parents: 106 diff changeset	112
e46e31fdecfd Restructured to handle multiple formats. Ryan C. Gordon <icculus@icculus.org> parents: 106 diff changeset	113 void (free)(struct S_FMT_T fmt);
e46e31fdecfd Restructured to handle multiple formats. Ryan C. Gordon <icculus@icculus.org> parents: 106 diff changeset	114 Uint32(read_sample)(Sound_Sample sample);
e46e31fdecfd Restructured to handle multiple formats. Ryan C. Gordon <icculus@icculus.org> parents: 106 diff changeset	115
e46e31fdecfd Restructured to handle multiple formats. Ryan C. Gordon <icculus@icculus.org> parents: 106 diff changeset	116 union
e46e31fdecfd Restructured to handle multiple formats. Ryan C. Gordon <icculus@icculus.org> parents: 106 diff changeset	117 {
e46e31fdecfd Restructured to handle multiple formats. Ryan C. Gordon <icculus@icculus.org> parents: 106 diff changeset	118 struct
e46e31fdecfd Restructured to handle multiple formats. Ryan C. Gordon <icculus@icculus.org> parents: 106 diff changeset	119 {
e46e31fdecfd Restructured to handle multiple formats. Ryan C. Gordon <icculus@icculus.org> parents: 106 diff changeset	120 Uint16 cbSize;
e46e31fdecfd Restructured to handle multiple formats. Ryan C. Gordon <icculus@icculus.org> parents: 106 diff changeset	121 Uint16 wSamplesPerBlock;
e46e31fdecfd Restructured to handle multiple formats. Ryan C. Gordon <icculus@icculus.org> parents: 106 diff changeset	122 Uint16 wNumCoef;
e46e31fdecfd Restructured to handle multiple formats. Ryan C. Gordon <icculus@icculus.org> parents: 106 diff changeset	123 ADPCMCOEFSET *aCoeff;
e46e31fdecfd Restructured to handle multiple formats. Ryan C. Gordon <icculus@icculus.org> parents: 106 diff changeset	124 } adpcm;
e46e31fdecfd Restructured to handle multiple formats. Ryan C. Gordon <icculus@icculus.org> parents: 106 diff changeset	125 } fmt;
e46e31fdecfd Restructured to handle multiple formats. Ryan C. Gordon <icculus@icculus.org> parents: 106 diff changeset	126 } fmt_t;
e46e31fdecfd Restructured to handle multiple formats. Ryan C. Gordon <icculus@icculus.org> parents: 106 diff changeset	127
e46e31fdecfd Restructured to handle multiple formats. Ryan C. Gordon <icculus@icculus.org> parents: 106 diff changeset	128
17 102cf61c0816 Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	129 /*
102cf61c0816 Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	130 * Read in a fmt_t from disk. This makes this process safe regardless of
102cf61c0816 Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	131 * the processor's byte order or how the fmt_t structure is packed.
124 e46e31fdecfd Restructured to handle multiple formats. Ryan C. Gordon <icculus@icculus.org> parents: 106 diff changeset	132 * Note that the union "fmt" is not read in here; that is handled as
e46e31fdecfd Restructured to handle multiple formats. Ryan C. Gordon <icculus@icculus.org> parents: 106 diff changeset	133 * needed in the read_fmt_* functions.
17 102cf61c0816 Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	134 */
102cf61c0816 Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	135 static int read_fmt_chunk(SDL_RWops rw, fmt_t fmt)
102cf61c0816 Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	136 {
102cf61c0816 Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	137 /* skip reading the chunk ID, since it was already read at this point... */
102cf61c0816 Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	138 fmt->chunkID = fmtID;
102cf61c0816 Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	139
102cf61c0816 Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	140 if (SDL_RWread(rw, &fmt->chunkSize, sizeof (fmt->chunkSize), 1) != 1)
102cf61c0816 Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	141 return(0);
102cf61c0816 Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	142 fmt->chunkSize = SDL_SwapLE32(fmt->chunkSize);
102cf61c0816 Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	143
102cf61c0816 Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	144 if (SDL_RWread(rw, &fmt->wFormatTag, sizeof (fmt->wFormatTag), 1) != 1)
102cf61c0816 Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	145 return(0);
102cf61c0816 Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	146 fmt->wFormatTag = SDL_SwapLE16(fmt->wFormatTag);
102cf61c0816 Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	147
102cf61c0816 Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	148 if (SDL_RWread(rw, &fmt->wChannels, sizeof (fmt->wChannels), 1) != 1)
102cf61c0816 Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	149 return(0);
102cf61c0816 Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	150 fmt->wChannels = SDL_SwapLE16(fmt->wChannels);
102cf61c0816 Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	151
102cf61c0816 Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	152 if (SDL_RWread(rw, &fmt->dwSamplesPerSec,
102cf61c0816 Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	153 sizeof (fmt->dwSamplesPerSec), 1) != 1)
102cf61c0816 Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	154 return(0);
102cf61c0816 Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	155 fmt->dwSamplesPerSec = SDL_SwapLE32(fmt->dwSamplesPerSec);
102cf61c0816 Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	156
102cf61c0816 Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	157 if (SDL_RWread(rw, &fmt->dwAvgBytesPerSec,
102cf61c0816 Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	158 sizeof (fmt->dwAvgBytesPerSec), 1) != 1)
102cf61c0816 Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	159 return(0);
102cf61c0816 Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	160 fmt->dwAvgBytesPerSec = SDL_SwapLE32(fmt->dwAvgBytesPerSec);
102cf61c0816 Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	161
102cf61c0816 Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	162 if (SDL_RWread(rw, &fmt->wBlockAlign, sizeof (fmt->wBlockAlign), 1) != 1)
102cf61c0816 Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	163 return(0);
102cf61c0816 Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	164 fmt->wBlockAlign = SDL_SwapLE16(fmt->wBlockAlign);
102cf61c0816 Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	165
102cf61c0816 Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	166 if (SDL_RWread(rw, &fmt->wBitsPerSample,
102cf61c0816 Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	167 sizeof (fmt->wBitsPerSample), 1) != 1)
102cf61c0816 Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	168 return(0);
102cf61c0816 Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	169 fmt->wBitsPerSample = SDL_SwapLE16(fmt->wBitsPerSample);
102cf61c0816 Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	170
102cf61c0816 Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	171 return(1);
102cf61c0816 Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	172 } /* read_fmt_chunk */
102cf61c0816 Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	173
102cf61c0816 Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	174
124 e46e31fdecfd Restructured to handle multiple formats. Ryan C. Gordon <icculus@icculus.org> parents: 106 diff changeset	175
e46e31fdecfd Restructured to handle multiple formats. Ryan C. Gordon <icculus@icculus.org> parents: 106 diff changeset	176 /*****************************************************************************
e46e31fdecfd Restructured to handle multiple formats. Ryan C. Gordon <icculus@icculus.org> parents: 106 diff changeset	177 * The DATA chunk... *
e46e31fdecfd Restructured to handle multiple formats. Ryan C. Gordon <icculus@icculus.org> parents: 106 diff changeset	178 *****************************************************************************/
e46e31fdecfd Restructured to handle multiple formats. Ryan C. Gordon <icculus@icculus.org> parents: 106 diff changeset	179
17 102cf61c0816 Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	180 #define dataID 0x61746164 /* "data", in ascii. */
102cf61c0816 Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	181
102cf61c0816 Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	182 typedef struct
102cf61c0816 Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	183 {
102cf61c0816 Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	184 Uint32 chunkID;
102cf61c0816 Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	185 Sint32 chunkSize;
102cf61c0816 Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	186 /* Then, (chunkSize) bytes of waveform data... */
102cf61c0816 Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	187 } data_t;
102cf61c0816 Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	188
102cf61c0816 Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	189
102cf61c0816 Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	190 /*
124 e46e31fdecfd Restructured to handle multiple formats. Ryan C. Gordon <icculus@icculus.org> parents: 106 diff changeset	191 * Read in a data_t from disk. This makes this process safe regardless of
17 102cf61c0816 Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	192 * the processor's byte order or how the fmt_t structure is packed.
102cf61c0816 Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	193 */
102cf61c0816 Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	194 static int read_data_chunk(SDL_RWops rw, data_t data)
102cf61c0816 Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	195 {
102cf61c0816 Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	196 /* skip reading the chunk ID, since it was already read at this point... */
102cf61c0816 Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	197 data->chunkID = dataID;
102cf61c0816 Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	198
102cf61c0816 Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	199 if (SDL_RWread(rw, &data->chunkSize, sizeof (data->chunkSize), 1) != 1)
102cf61c0816 Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	200 return(0);
102cf61c0816 Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	201 data->chunkSize = SDL_SwapLE32(data->chunkSize);
102cf61c0816 Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	202
102cf61c0816 Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	203 return(1);
40 c15396fc0e55 Fixed incorrect comment, by Torbj�rn Andersson. :) Ryan C. Gordon <icculus@icculus.org> parents: 17 diff changeset	204 } /* read_data_chunk */
17 102cf61c0816 Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	205
102cf61c0816 Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	206
102cf61c0816 Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	207
102cf61c0816 Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	208
124 e46e31fdecfd Restructured to handle multiple formats. Ryan C. Gordon <icculus@icculus.org> parents: 106 diff changeset	209 /*****************************************************************************
e46e31fdecfd Restructured to handle multiple formats. Ryan C. Gordon <icculus@icculus.org> parents: 106 diff changeset	210 * this is what we store in our internal->decoder_private field... *
e46e31fdecfd Restructured to handle multiple formats. Ryan C. Gordon <icculus@icculus.org> parents: 106 diff changeset	211 *****************************************************************************/
17 102cf61c0816 Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	212
124 e46e31fdecfd Restructured to handle multiple formats. Ryan C. Gordon <icculus@icculus.org> parents: 106 diff changeset	213 typedef struct
e46e31fdecfd Restructured to handle multiple formats. Ryan C. Gordon <icculus@icculus.org> parents: 106 diff changeset	214 {
e46e31fdecfd Restructured to handle multiple formats. Ryan C. Gordon <icculus@icculus.org> parents: 106 diff changeset	215 fmt_t *fmt;
e46e31fdecfd Restructured to handle multiple formats. Ryan C. Gordon <icculus@icculus.org> parents: 106 diff changeset	216 Sint32 bytesLeft;
e46e31fdecfd Restructured to handle multiple formats. Ryan C. Gordon <icculus@icculus.org> parents: 106 diff changeset	217 } wav_t;
17 102cf61c0816 Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	218
102cf61c0816 Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	219
102cf61c0816 Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	220
102cf61c0816 Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	221
124 e46e31fdecfd Restructured to handle multiple formats. Ryan C. Gordon <icculus@icculus.org> parents: 106 diff changeset	222 /*****************************************************************************
e46e31fdecfd Restructured to handle multiple formats. Ryan C. Gordon <icculus@icculus.org> parents: 106 diff changeset	223 * Normal, uncompressed waveform handler... *
e46e31fdecfd Restructured to handle multiple formats. Ryan C. Gordon <icculus@icculus.org> parents: 106 diff changeset	224 *****************************************************************************/
e46e31fdecfd Restructured to handle multiple formats. Ryan C. Gordon <icculus@icculus.org> parents: 106 diff changeset	225
e46e31fdecfd Restructured to handle multiple formats. Ryan C. Gordon <icculus@icculus.org> parents: 106 diff changeset	226 static Uint32 read_sample_fmt_normal(Sound_Sample *sample)
17 102cf61c0816 Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	227 {
102cf61c0816 Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	228 Uint32 retval;
102cf61c0816 Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	229 Sound_SampleInternal internal = (Sound_SampleInternal ) sample->opaque;
102cf61c0816 Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	230 wav_t w = (wav_t ) internal->decoder_private;
102cf61c0816 Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	231 Uint32 max = (internal->buffer_size < (Uint32) w->bytesLeft) ?
102cf61c0816 Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	232 internal->buffer_size : (Uint32) w->bytesLeft;
102cf61c0816 Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	233
102cf61c0816 Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	234 assert(max > 0);
102cf61c0816 Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	235
102cf61c0816 Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	236 /*
102cf61c0816 Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	237 * We don't actually do any decoding, so we read the wav data
102cf61c0816 Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	238 * directly into the internal buffer...
102cf61c0816 Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	239 */
102cf61c0816 Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	240 retval = SDL_RWread(internal->rw, internal->buffer, 1, max);
102cf61c0816 Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	241
102cf61c0816 Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	242 w->bytesLeft -= retval;
102cf61c0816 Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	243
102cf61c0816 Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	244 /* Make sure the read went smoothly... */
102cf61c0816 Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	245 if ((retval == 0) \|\| (w->bytesLeft == 0))
102cf61c0816 Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	246 sample->flags \|= SOUND_SAMPLEFLAG_EOF;
102cf61c0816 Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	247
102cf61c0816 Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	248 else if (retval == -1)
102cf61c0816 Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	249 sample->flags \|= SOUND_SAMPLEFLAG_ERROR;
102cf61c0816 Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	250
102cf61c0816 Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	251 /* (next call this EAGAIN may turn into an EOF or error.) */
102cf61c0816 Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	252 else if (retval < internal->buffer_size)
102cf61c0816 Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	253 sample->flags \|= SOUND_SAMPLEFLAG_EAGAIN;
102cf61c0816 Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	254
102cf61c0816 Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	255 return(retval);
124 e46e31fdecfd Restructured to handle multiple formats. Ryan C. Gordon <icculus@icculus.org> parents: 106 diff changeset	256 } /* read_sample_fmt_normal */
e46e31fdecfd Restructured to handle multiple formats. Ryan C. Gordon <icculus@icculus.org> parents: 106 diff changeset	257
e46e31fdecfd Restructured to handle multiple formats. Ryan C. Gordon <icculus@icculus.org> parents: 106 diff changeset	258
e46e31fdecfd Restructured to handle multiple formats. Ryan C. Gordon <icculus@icculus.org> parents: 106 diff changeset	259 static void free_fmt_normal(fmt_t *fmt)
e46e31fdecfd Restructured to handle multiple formats. Ryan C. Gordon <icculus@icculus.org> parents: 106 diff changeset	260 {
e46e31fdecfd Restructured to handle multiple formats. Ryan C. Gordon <icculus@icculus.org> parents: 106 diff changeset	261 /* it's a no-op. */
e46e31fdecfd Restructured to handle multiple formats. Ryan C. Gordon <icculus@icculus.org> parents: 106 diff changeset	262 } /* free_fmt_normal */
e46e31fdecfd Restructured to handle multiple formats. Ryan C. Gordon <icculus@icculus.org> parents: 106 diff changeset	263
e46e31fdecfd Restructured to handle multiple formats. Ryan C. Gordon <icculus@icculus.org> parents: 106 diff changeset	264
e46e31fdecfd Restructured to handle multiple formats. Ryan C. Gordon <icculus@icculus.org> parents: 106 diff changeset	265 static int read_fmt_normal(SDL_RWops rw, fmt_t fmt)
e46e31fdecfd Restructured to handle multiple formats. Ryan C. Gordon <icculus@icculus.org> parents: 106 diff changeset	266 {
e46e31fdecfd Restructured to handle multiple formats. Ryan C. Gordon <icculus@icculus.org> parents: 106 diff changeset	267 fmt->free = free_fmt_normal;
e46e31fdecfd Restructured to handle multiple formats. Ryan C. Gordon <icculus@icculus.org> parents: 106 diff changeset	268 fmt->read_sample = read_sample_fmt_normal;
e46e31fdecfd Restructured to handle multiple formats. Ryan C. Gordon <icculus@icculus.org> parents: 106 diff changeset	269 return(1);
e46e31fdecfd Restructured to handle multiple formats. Ryan C. Gordon <icculus@icculus.org> parents: 106 diff changeset	270 } /* read_fmt_normal */
e46e31fdecfd Restructured to handle multiple formats. Ryan C. Gordon <icculus@icculus.org> parents: 106 diff changeset	271
e46e31fdecfd Restructured to handle multiple formats. Ryan C. Gordon <icculus@icculus.org> parents: 106 diff changeset	272
e46e31fdecfd Restructured to handle multiple formats. Ryan C. Gordon <icculus@icculus.org> parents: 106 diff changeset	273
e46e31fdecfd Restructured to handle multiple formats. Ryan C. Gordon <icculus@icculus.org> parents: 106 diff changeset	274 /*****************************************************************************
e46e31fdecfd Restructured to handle multiple formats. Ryan C. Gordon <icculus@icculus.org> parents: 106 diff changeset	275 * ADPCM compression handler... *
e46e31fdecfd Restructured to handle multiple formats. Ryan C. Gordon <icculus@icculus.org> parents: 106 diff changeset	276 *****************************************************************************/
e46e31fdecfd Restructured to handle multiple formats. Ryan C. Gordon <icculus@icculus.org> parents: 106 diff changeset	277
e46e31fdecfd Restructured to handle multiple formats. Ryan C. Gordon <icculus@icculus.org> parents: 106 diff changeset	278 static Uint32 read_sample_fmt_adpcm(Sound_Sample *sample)
e46e31fdecfd Restructured to handle multiple formats. Ryan C. Gordon <icculus@icculus.org> parents: 106 diff changeset	279 {
e46e31fdecfd Restructured to handle multiple formats. Ryan C. Gordon <icculus@icculus.org> parents: 106 diff changeset	280 /* !!! FIXME: Write this. */
e46e31fdecfd Restructured to handle multiple formats. Ryan C. Gordon <icculus@icculus.org> parents: 106 diff changeset	281 sample->flags \| SOUND_SAMPLEFLAG_ERROR;
e46e31fdecfd Restructured to handle multiple formats. Ryan C. Gordon <icculus@icculus.org> parents: 106 diff changeset	282 return(0);
e46e31fdecfd Restructured to handle multiple formats. Ryan C. Gordon <icculus@icculus.org> parents: 106 diff changeset	283 } /* read_sample_fmt_adpcm */
e46e31fdecfd Restructured to handle multiple formats. Ryan C. Gordon <icculus@icculus.org> parents: 106 diff changeset	284
e46e31fdecfd Restructured to handle multiple formats. Ryan C. Gordon <icculus@icculus.org> parents: 106 diff changeset	285
e46e31fdecfd Restructured to handle multiple formats. Ryan C. Gordon <icculus@icculus.org> parents: 106 diff changeset	286 static void free_fmt_adpcm(fmt_t *fmt)
e46e31fdecfd Restructured to handle multiple formats. Ryan C. Gordon <icculus@icculus.org> parents: 106 diff changeset	287 {
e46e31fdecfd Restructured to handle multiple formats. Ryan C. Gordon <icculus@icculus.org> parents: 106 diff changeset	288 if (fmt->fmt.adpcm.aCoeff != NULL)
e46e31fdecfd Restructured to handle multiple formats. Ryan C. Gordon <icculus@icculus.org> parents: 106 diff changeset	289 free(fmt->fmt.adpcm.aCoeff);
e46e31fdecfd Restructured to handle multiple formats. Ryan C. Gordon <icculus@icculus.org> parents: 106 diff changeset	290 } /* free_fmt_adpcm */
e46e31fdecfd Restructured to handle multiple formats. Ryan C. Gordon <icculus@icculus.org> parents: 106 diff changeset	291
e46e31fdecfd Restructured to handle multiple formats. Ryan C. Gordon <icculus@icculus.org> parents: 106 diff changeset	292
e46e31fdecfd Restructured to handle multiple formats. Ryan C. Gordon <icculus@icculus.org> parents: 106 diff changeset	293 /*
e46e31fdecfd Restructured to handle multiple formats. Ryan C. Gordon <icculus@icculus.org> parents: 106 diff changeset	294 * Read in a the adpcm-specific info from disk. This makes this process
e46e31fdecfd Restructured to handle multiple formats. Ryan C. Gordon <icculus@icculus.org> parents: 106 diff changeset	295 * safe regardless of the processor's byte order or how the fmt_t
e46e31fdecfd Restructured to handle multiple formats. Ryan C. Gordon <icculus@icculus.org> parents: 106 diff changeset	296 * structure is packed.
e46e31fdecfd Restructured to handle multiple formats. Ryan C. Gordon <icculus@icculus.org> parents: 106 diff changeset	297 */
e46e31fdecfd Restructured to handle multiple formats. Ryan C. Gordon <icculus@icculus.org> parents: 106 diff changeset	298 static int read_fmt_adpcm(SDL_RWops rw, fmt_t fmt)
e46e31fdecfd Restructured to handle multiple formats. Ryan C. Gordon <icculus@icculus.org> parents: 106 diff changeset	299 {
e46e31fdecfd Restructured to handle multiple formats. Ryan C. Gordon <icculus@icculus.org> parents: 106 diff changeset	300 size_t i;
e46e31fdecfd Restructured to handle multiple formats. Ryan C. Gordon <icculus@icculus.org> parents: 106 diff changeset	301
e46e31fdecfd Restructured to handle multiple formats. Ryan C. Gordon <icculus@icculus.org> parents: 106 diff changeset	302 fmt->fmt.adpcm.aCoeff = NULL;
e46e31fdecfd Restructured to handle multiple formats. Ryan C. Gordon <icculus@icculus.org> parents: 106 diff changeset	303 fmt->free = free_fmt_adpcm;
e46e31fdecfd Restructured to handle multiple formats. Ryan C. Gordon <icculus@icculus.org> parents: 106 diff changeset	304 fmt->read_sample = read_sample_fmt_adpcm;
e46e31fdecfd Restructured to handle multiple formats. Ryan C. Gordon <icculus@icculus.org> parents: 106 diff changeset	305
e46e31fdecfd Restructured to handle multiple formats. Ryan C. Gordon <icculus@icculus.org> parents: 106 diff changeset	306 if (SDL_RWread(rw, &fmt->fmt.adpcm.cbSize,
e46e31fdecfd Restructured to handle multiple formats. Ryan C. Gordon <icculus@icculus.org> parents: 106 diff changeset	307 sizeof (fmt->fmt.adpcm.cbSize), 1) != 1)
e46e31fdecfd Restructured to handle multiple formats. Ryan C. Gordon <icculus@icculus.org> parents: 106 diff changeset	308 {
e46e31fdecfd Restructured to handle multiple formats. Ryan C. Gordon <icculus@icculus.org> parents: 106 diff changeset	309 return(0);
e46e31fdecfd Restructured to handle multiple formats. Ryan C. Gordon <icculus@icculus.org> parents: 106 diff changeset	310 } /* if */
e46e31fdecfd Restructured to handle multiple formats. Ryan C. Gordon <icculus@icculus.org> parents: 106 diff changeset	311 fmt->fmt.adpcm.cbSize = SDL_SwapLE16(fmt->fmt.adpcm.cbSize);
e46e31fdecfd Restructured to handle multiple formats. Ryan C. Gordon <icculus@icculus.org> parents: 106 diff changeset	312
e46e31fdecfd Restructured to handle multiple formats. Ryan C. Gordon <icculus@icculus.org> parents: 106 diff changeset	313 if (SDL_RWread(rw, &fmt->fmt.adpcm.wSamplesPerBlock,
e46e31fdecfd Restructured to handle multiple formats. Ryan C. Gordon <icculus@icculus.org> parents: 106 diff changeset	314 sizeof (fmt->fmt.adpcm.wSamplesPerBlock), 1) != 1)
e46e31fdecfd Restructured to handle multiple formats. Ryan C. Gordon <icculus@icculus.org> parents: 106 diff changeset	315 {
e46e31fdecfd Restructured to handle multiple formats. Ryan C. Gordon <icculus@icculus.org> parents: 106 diff changeset	316 return(0);
e46e31fdecfd Restructured to handle multiple formats. Ryan C. Gordon <icculus@icculus.org> parents: 106 diff changeset	317 } /* if */
e46e31fdecfd Restructured to handle multiple formats. Ryan C. Gordon <icculus@icculus.org> parents: 106 diff changeset	318 fmt->fmt.adpcm.wSamplesPerBlock = SDL_SwapLE16(fmt->fmt.adpcm.wSamplesPerBlock);
e46e31fdecfd Restructured to handle multiple formats. Ryan C. Gordon <icculus@icculus.org> parents: 106 diff changeset	319
e46e31fdecfd Restructured to handle multiple formats. Ryan C. Gordon <icculus@icculus.org> parents: 106 diff changeset	320 if (SDL_RWread(rw, &fmt->fmt.adpcm.wNumCoef,
e46e31fdecfd Restructured to handle multiple formats. Ryan C. Gordon <icculus@icculus.org> parents: 106 diff changeset	321 sizeof (fmt->fmt.adpcm.wNumCoef), 1) != 1)
e46e31fdecfd Restructured to handle multiple formats. Ryan C. Gordon <icculus@icculus.org> parents: 106 diff changeset	322 {
e46e31fdecfd Restructured to handle multiple formats. Ryan C. Gordon <icculus@icculus.org> parents: 106 diff changeset	323 return(0);
e46e31fdecfd Restructured to handle multiple formats. Ryan C. Gordon <icculus@icculus.org> parents: 106 diff changeset	324 } /* if */
e46e31fdecfd Restructured to handle multiple formats. Ryan C. Gordon <icculus@icculus.org> parents: 106 diff changeset	325 fmt->fmt.adpcm.wNumCoef = SDL_SwapLE16(fmt->fmt.adpcm.wNumCoef);
e46e31fdecfd Restructured to handle multiple formats. Ryan C. Gordon <icculus@icculus.org> parents: 106 diff changeset	326
e46e31fdecfd Restructured to handle multiple formats. Ryan C. Gordon <icculus@icculus.org> parents: 106 diff changeset	327 i = sizeof (ADPCMCOEFSET) * fmt->fmt.adpcm.wNumCoef;
e46e31fdecfd Restructured to handle multiple formats. Ryan C. Gordon <icculus@icculus.org> parents: 106 diff changeset	328 fmt->fmt.adpcm.aCoeff = (ADPCMCOEFSET *) malloc(i);
e46e31fdecfd Restructured to handle multiple formats. Ryan C. Gordon <icculus@icculus.org> parents: 106 diff changeset	329 BAIL_IF_MACRO(fmt->fmt.adpcm.aCoeff == NULL, ERR_OUT_OF_MEMORY, 0);
e46e31fdecfd Restructured to handle multiple formats. Ryan C. Gordon <icculus@icculus.org> parents: 106 diff changeset	330
e46e31fdecfd Restructured to handle multiple formats. Ryan C. Gordon <icculus@icculus.org> parents: 106 diff changeset	331 for (i = 0; i < fmt->fmt.adpcm.wNumCoef; i++)
e46e31fdecfd Restructured to handle multiple formats. Ryan C. Gordon <icculus@icculus.org> parents: 106 diff changeset	332 {
e46e31fdecfd Restructured to handle multiple formats. Ryan C. Gordon <icculus@icculus.org> parents: 106 diff changeset	333 if (SDL_RWread(rw, &fmt->fmt.adpcm.aCoeff[i].iCoef1,
e46e31fdecfd Restructured to handle multiple formats. Ryan C. Gordon <icculus@icculus.org> parents: 106 diff changeset	334 sizeof (fmt->fmt.adpcm.aCoeff[i].iCoef1), 1) != 1)
e46e31fdecfd Restructured to handle multiple formats. Ryan C. Gordon <icculus@icculus.org> parents: 106 diff changeset	335 {
e46e31fdecfd Restructured to handle multiple formats. Ryan C. Gordon <icculus@icculus.org> parents: 106 diff changeset	336 return(0);
e46e31fdecfd Restructured to handle multiple formats. Ryan C. Gordon <icculus@icculus.org> parents: 106 diff changeset	337 } /* if */
e46e31fdecfd Restructured to handle multiple formats. Ryan C. Gordon <icculus@icculus.org> parents: 106 diff changeset	338
e46e31fdecfd Restructured to handle multiple formats. Ryan C. Gordon <icculus@icculus.org> parents: 106 diff changeset	339 if (SDL_RWread(rw, &fmt->fmt.adpcm.aCoeff[i].iCoef2,
e46e31fdecfd Restructured to handle multiple formats. Ryan C. Gordon <icculus@icculus.org> parents: 106 diff changeset	340 sizeof (fmt->fmt.adpcm.aCoeff[i].iCoef2), 1) != 1)
e46e31fdecfd Restructured to handle multiple formats. Ryan C. Gordon <icculus@icculus.org> parents: 106 diff changeset	341 {
e46e31fdecfd Restructured to handle multiple formats. Ryan C. Gordon <icculus@icculus.org> parents: 106 diff changeset	342 return(0);
e46e31fdecfd Restructured to handle multiple formats. Ryan C. Gordon <icculus@icculus.org> parents: 106 diff changeset	343 } /* if */
e46e31fdecfd Restructured to handle multiple formats. Ryan C. Gordon <icculus@icculus.org> parents: 106 diff changeset	344 } /* for */
e46e31fdecfd Restructured to handle multiple formats. Ryan C. Gordon <icculus@icculus.org> parents: 106 diff changeset	345
e46e31fdecfd Restructured to handle multiple formats. Ryan C. Gordon <icculus@icculus.org> parents: 106 diff changeset	346 return(1);
e46e31fdecfd Restructured to handle multiple formats. Ryan C. Gordon <icculus@icculus.org> parents: 106 diff changeset	347 } /* read_fmt_adpcm */
e46e31fdecfd Restructured to handle multiple formats. Ryan C. Gordon <icculus@icculus.org> parents: 106 diff changeset	348
e46e31fdecfd Restructured to handle multiple formats. Ryan C. Gordon <icculus@icculus.org> parents: 106 diff changeset	349
e46e31fdecfd Restructured to handle multiple formats. Ryan C. Gordon <icculus@icculus.org> parents: 106 diff changeset	350 /*****************************************************************************
e46e31fdecfd Restructured to handle multiple formats. Ryan C. Gordon <icculus@icculus.org> parents: 106 diff changeset	351 * Everything else... *
e46e31fdecfd Restructured to handle multiple formats. Ryan C. Gordon <icculus@icculus.org> parents: 106 diff changeset	352 *****************************************************************************/
e46e31fdecfd Restructured to handle multiple formats. Ryan C. Gordon <icculus@icculus.org> parents: 106 diff changeset	353
e46e31fdecfd Restructured to handle multiple formats. Ryan C. Gordon <icculus@icculus.org> parents: 106 diff changeset	354
e46e31fdecfd Restructured to handle multiple formats. Ryan C. Gordon <icculus@icculus.org> parents: 106 diff changeset	355 static int read_fmt(SDL_RWops rw, fmt_t fmt)
e46e31fdecfd Restructured to handle multiple formats. Ryan C. Gordon <icculus@icculus.org> parents: 106 diff changeset	356 {
e46e31fdecfd Restructured to handle multiple formats. Ryan C. Gordon <icculus@icculus.org> parents: 106 diff changeset	357 /* if it's in this switch statement, we support the format. */
e46e31fdecfd Restructured to handle multiple formats. Ryan C. Gordon <icculus@icculus.org> parents: 106 diff changeset	358 switch (fmt->wFormatTag)
e46e31fdecfd Restructured to handle multiple formats. Ryan C. Gordon <icculus@icculus.org> parents: 106 diff changeset	359 {
e46e31fdecfd Restructured to handle multiple formats. Ryan C. Gordon <icculus@icculus.org> parents: 106 diff changeset	360 case FMT_NORMAL:
e46e31fdecfd Restructured to handle multiple formats. Ryan C. Gordon <icculus@icculus.org> parents: 106 diff changeset	361 return(read_fmt_normal(rw, fmt));
e46e31fdecfd Restructured to handle multiple formats. Ryan C. Gordon <icculus@icculus.org> parents: 106 diff changeset	362
e46e31fdecfd Restructured to handle multiple formats. Ryan C. Gordon <icculus@icculus.org> parents: 106 diff changeset	363 case FMT_ADPCM:
e46e31fdecfd Restructured to handle multiple formats. Ryan C. Gordon <icculus@icculus.org> parents: 106 diff changeset	364 return(read_fmt_adpcm(rw, fmt));
e46e31fdecfd Restructured to handle multiple formats. Ryan C. Gordon <icculus@icculus.org> parents: 106 diff changeset	365 } /* switch */
e46e31fdecfd Restructured to handle multiple formats. Ryan C. Gordon <icculus@icculus.org> parents: 106 diff changeset	366
e46e31fdecfd Restructured to handle multiple formats. Ryan C. Gordon <icculus@icculus.org> parents: 106 diff changeset	367 SNDDBG(("WAV: Format %d is unknown.\n", (int) fmt->wFormatTag));
e46e31fdecfd Restructured to handle multiple formats. Ryan C. Gordon <icculus@icculus.org> parents: 106 diff changeset	368 Sound_SetError("WAV: Unsupported format");
e46e31fdecfd Restructured to handle multiple formats. Ryan C. Gordon <icculus@icculus.org> parents: 106 diff changeset	369 return(0); /* not supported whatsoever. */
e46e31fdecfd Restructured to handle multiple formats. Ryan C. Gordon <icculus@icculus.org> parents: 106 diff changeset	370 } /* read_fmt */
e46e31fdecfd Restructured to handle multiple formats. Ryan C. Gordon <icculus@icculus.org> parents: 106 diff changeset	371
e46e31fdecfd Restructured to handle multiple formats. Ryan C. Gordon <icculus@icculus.org> parents: 106 diff changeset	372
e46e31fdecfd Restructured to handle multiple formats. Ryan C. Gordon <icculus@icculus.org> parents: 106 diff changeset	373 /*
e46e31fdecfd Restructured to handle multiple formats. Ryan C. Gordon <icculus@icculus.org> parents: 106 diff changeset	374 * Locate a specific chunk in the WAVE file by ID...
e46e31fdecfd Restructured to handle multiple formats. Ryan C. Gordon <icculus@icculus.org> parents: 106 diff changeset	375 */
e46e31fdecfd Restructured to handle multiple formats. Ryan C. Gordon <icculus@icculus.org> parents: 106 diff changeset	376 static int find_chunk(SDL_RWops *rw, Uint32 id)
e46e31fdecfd Restructured to handle multiple formats. Ryan C. Gordon <icculus@icculus.org> parents: 106 diff changeset	377 {
e46e31fdecfd Restructured to handle multiple formats. Ryan C. Gordon <icculus@icculus.org> parents: 106 diff changeset	378 Sint32 siz = 0;
e46e31fdecfd Restructured to handle multiple formats. Ryan C. Gordon <icculus@icculus.org> parents: 106 diff changeset	379 Uint32 _id = 0;
e46e31fdecfd Restructured to handle multiple formats. Ryan C. Gordon <icculus@icculus.org> parents: 106 diff changeset	380
e46e31fdecfd Restructured to handle multiple formats. Ryan C. Gordon <icculus@icculus.org> parents: 106 diff changeset	381 while (1)
e46e31fdecfd Restructured to handle multiple formats. Ryan C. Gordon <icculus@icculus.org> parents: 106 diff changeset	382 {
e46e31fdecfd Restructured to handle multiple formats. Ryan C. Gordon <icculus@icculus.org> parents: 106 diff changeset	383 BAIL_IF_MACRO(SDL_RWread(rw, &_id, sizeof (_id), 1) != 1, NULL, 0);
e46e31fdecfd Restructured to handle multiple formats. Ryan C. Gordon <icculus@icculus.org> parents: 106 diff changeset	384 if (SDL_SwapLE32(_id) == id)
e46e31fdecfd Restructured to handle multiple formats. Ryan C. Gordon <icculus@icculus.org> parents: 106 diff changeset	385 return(1);
e46e31fdecfd Restructured to handle multiple formats. Ryan C. Gordon <icculus@icculus.org> parents: 106 diff changeset	386
e46e31fdecfd Restructured to handle multiple formats. Ryan C. Gordon <icculus@icculus.org> parents: 106 diff changeset	387 BAIL_IF_MACRO(SDL_RWread(rw, &siz, sizeof (siz), 1) != 1, NULL, 0);
e46e31fdecfd Restructured to handle multiple formats. Ryan C. Gordon <icculus@icculus.org> parents: 106 diff changeset	388 siz = SDL_SwapLE32(siz);
e46e31fdecfd Restructured to handle multiple formats. Ryan C. Gordon <icculus@icculus.org> parents: 106 diff changeset	389 assert(siz > 0);
e46e31fdecfd Restructured to handle multiple formats. Ryan C. Gordon <icculus@icculus.org> parents: 106 diff changeset	390 BAIL_IF_MACRO(SDL_RWseek(rw, siz, SEEK_SET) != siz, NULL, 0);
e46e31fdecfd Restructured to handle multiple formats. Ryan C. Gordon <icculus@icculus.org> parents: 106 diff changeset	391 } /* while */
e46e31fdecfd Restructured to handle multiple formats. Ryan C. Gordon <icculus@icculus.org> parents: 106 diff changeset	392
e46e31fdecfd Restructured to handle multiple formats. Ryan C. Gordon <icculus@icculus.org> parents: 106 diff changeset	393 return(0); /* shouldn't hit this, but just in case... */
e46e31fdecfd Restructured to handle multiple formats. Ryan C. Gordon <icculus@icculus.org> parents: 106 diff changeset	394 } /* find_chunk */
e46e31fdecfd Restructured to handle multiple formats. Ryan C. Gordon <icculus@icculus.org> parents: 106 diff changeset	395
e46e31fdecfd Restructured to handle multiple formats. Ryan C. Gordon <icculus@icculus.org> parents: 106 diff changeset	396
e46e31fdecfd Restructured to handle multiple formats. Ryan C. Gordon <icculus@icculus.org> parents: 106 diff changeset	397 static int WAV_open_internal(Sound_Sample sample, const char ext, fmt_t *fmt)
e46e31fdecfd Restructured to handle multiple formats. Ryan C. Gordon <icculus@icculus.org> parents: 106 diff changeset	398 {
e46e31fdecfd Restructured to handle multiple formats. Ryan C. Gordon <icculus@icculus.org> parents: 106 diff changeset	399 Sound_SampleInternal internal = (Sound_SampleInternal ) sample->opaque;
e46e31fdecfd Restructured to handle multiple formats. Ryan C. Gordon <icculus@icculus.org> parents: 106 diff changeset	400 SDL_RWops *rw = internal->rw;
e46e31fdecfd Restructured to handle multiple formats. Ryan C. Gordon <icculus@icculus.org> parents: 106 diff changeset	401 data_t d;
e46e31fdecfd Restructured to handle multiple formats. Ryan C. Gordon <icculus@icculus.org> parents: 106 diff changeset	402 wav_t *w;
e46e31fdecfd Restructured to handle multiple formats. Ryan C. Gordon <icculus@icculus.org> parents: 106 diff changeset	403
e46e31fdecfd Restructured to handle multiple formats. Ryan C. Gordon <icculus@icculus.org> parents: 106 diff changeset	404 BAIL_IF_MACRO(SDL_ReadLE32(rw) != riffID, "WAV: Not a RIFF file.", 0);
e46e31fdecfd Restructured to handle multiple formats. Ryan C. Gordon <icculus@icculus.org> parents: 106 diff changeset	405 SDL_ReadLE32(rw); /* throw the length away; we get this info later. */
e46e31fdecfd Restructured to handle multiple formats. Ryan C. Gordon <icculus@icculus.org> parents: 106 diff changeset	406 BAIL_IF_MACRO(SDL_ReadLE32(rw) != waveID, "WAV: Not a WAVE file.", 0);
e46e31fdecfd Restructured to handle multiple formats. Ryan C. Gordon <icculus@icculus.org> parents: 106 diff changeset	407 BAIL_IF_MACRO(!find_chunk(rw, fmtID), "WAV: No format chunk.", 0);
e46e31fdecfd Restructured to handle multiple formats. Ryan C. Gordon <icculus@icculus.org> parents: 106 diff changeset	408 BAIL_IF_MACRO(!read_fmt_chunk(rw, fmt), "WAV: Can't read format chunk.", 0);
e46e31fdecfd Restructured to handle multiple formats. Ryan C. Gordon <icculus@icculus.org> parents: 106 diff changeset	409
e46e31fdecfd Restructured to handle multiple formats. Ryan C. Gordon <icculus@icculus.org> parents: 106 diff changeset	410 sample->actual.channels = (Uint8) fmt->wChannels;
e46e31fdecfd Restructured to handle multiple formats. Ryan C. Gordon <icculus@icculus.org> parents: 106 diff changeset	411 sample->actual.rate = fmt->dwSamplesPerSec;
e46e31fdecfd Restructured to handle multiple formats. Ryan C. Gordon <icculus@icculus.org> parents: 106 diff changeset	412 if (fmt->wBitsPerSample <= 8)
e46e31fdecfd Restructured to handle multiple formats. Ryan C. Gordon <icculus@icculus.org> parents: 106 diff changeset	413 sample->actual.format = AUDIO_U8;
e46e31fdecfd Restructured to handle multiple formats. Ryan C. Gordon <icculus@icculus.org> parents: 106 diff changeset	414 else if (fmt->wBitsPerSample <= 16)
e46e31fdecfd Restructured to handle multiple formats. Ryan C. Gordon <icculus@icculus.org> parents: 106 diff changeset	415 sample->actual.format = AUDIO_S16LSB;
e46e31fdecfd Restructured to handle multiple formats. Ryan C. Gordon <icculus@icculus.org> parents: 106 diff changeset	416 else
e46e31fdecfd Restructured to handle multiple formats. Ryan C. Gordon <icculus@icculus.org> parents: 106 diff changeset	417 BAIL_MACRO("WAV: Unsupported sample size.", 0);
e46e31fdecfd Restructured to handle multiple formats. Ryan C. Gordon <icculus@icculus.org> parents: 106 diff changeset	418
e46e31fdecfd Restructured to handle multiple formats. Ryan C. Gordon <icculus@icculus.org> parents: 106 diff changeset	419 BAIL_IF_MACRO(!read_fmt(rw, fmt), NULL, 0);
e46e31fdecfd Restructured to handle multiple formats. Ryan C. Gordon <icculus@icculus.org> parents: 106 diff changeset	420 BAIL_IF_MACRO(!find_chunk(rw, dataID), "WAV: No data chunk.", 0);
e46e31fdecfd Restructured to handle multiple formats. Ryan C. Gordon <icculus@icculus.org> parents: 106 diff changeset	421 BAIL_IF_MACRO(!read_data_chunk(rw, &d), "WAV: Can't read data chunk.", 0);
e46e31fdecfd Restructured to handle multiple formats. Ryan C. Gordon <icculus@icculus.org> parents: 106 diff changeset	422
e46e31fdecfd Restructured to handle multiple formats. Ryan C. Gordon <icculus@icculus.org> parents: 106 diff changeset	423 w = (wav_t *) malloc(sizeof(wav_t));
e46e31fdecfd Restructured to handle multiple formats. Ryan C. Gordon <icculus@icculus.org> parents: 106 diff changeset	424 BAIL_IF_MACRO(w == NULL, ERR_OUT_OF_MEMORY, 0);
e46e31fdecfd Restructured to handle multiple formats. Ryan C. Gordon <icculus@icculus.org> parents: 106 diff changeset	425 w->fmt = fmt;
e46e31fdecfd Restructured to handle multiple formats. Ryan C. Gordon <icculus@icculus.org> parents: 106 diff changeset	426 w->bytesLeft = d.chunkSize;
e46e31fdecfd Restructured to handle multiple formats. Ryan C. Gordon <icculus@icculus.org> parents: 106 diff changeset	427 internal->decoder_private = (void *) w;
e46e31fdecfd Restructured to handle multiple formats. Ryan C. Gordon <icculus@icculus.org> parents: 106 diff changeset	428
e46e31fdecfd Restructured to handle multiple formats. Ryan C. Gordon <icculus@icculus.org> parents: 106 diff changeset	429 sample->flags = SOUND_SAMPLEFLAG_NONE;
e46e31fdecfd Restructured to handle multiple formats. Ryan C. Gordon <icculus@icculus.org> parents: 106 diff changeset	430
e46e31fdecfd Restructured to handle multiple formats. Ryan C. Gordon <icculus@icculus.org> parents: 106 diff changeset	431 SNDDBG(("WAV: Accepting data stream.\n"));
e46e31fdecfd Restructured to handle multiple formats. Ryan C. Gordon <icculus@icculus.org> parents: 106 diff changeset	432 return(1); /* we'll handle this data. */
e46e31fdecfd Restructured to handle multiple formats. Ryan C. Gordon <icculus@icculus.org> parents: 106 diff changeset	433 } /* WAV_open_internal */
e46e31fdecfd Restructured to handle multiple formats. Ryan C. Gordon <icculus@icculus.org> parents: 106 diff changeset	434
e46e31fdecfd Restructured to handle multiple formats. Ryan C. Gordon <icculus@icculus.org> parents: 106 diff changeset	435
e46e31fdecfd Restructured to handle multiple formats. Ryan C. Gordon <icculus@icculus.org> parents: 106 diff changeset	436 static int WAV_open(Sound_Sample sample, const char ext)
e46e31fdecfd Restructured to handle multiple formats. Ryan C. Gordon <icculus@icculus.org> parents: 106 diff changeset	437 {
e46e31fdecfd Restructured to handle multiple formats. Ryan C. Gordon <icculus@icculus.org> parents: 106 diff changeset	438 int rc;
e46e31fdecfd Restructured to handle multiple formats. Ryan C. Gordon <icculus@icculus.org> parents: 106 diff changeset	439
e46e31fdecfd Restructured to handle multiple formats. Ryan C. Gordon <icculus@icculus.org> parents: 106 diff changeset	440 fmt_t fmt = (fmt_t ) malloc(sizeof (fmt_t));
e46e31fdecfd Restructured to handle multiple formats. Ryan C. Gordon <icculus@icculus.org> parents: 106 diff changeset	441 BAIL_IF_MACRO(fmt == NULL, ERR_OUT_OF_MEMORY, 0);
e46e31fdecfd Restructured to handle multiple formats. Ryan C. Gordon <icculus@icculus.org> parents: 106 diff changeset	442 memset(fmt, '\0', sizeof (fmt_t));
e46e31fdecfd Restructured to handle multiple formats. Ryan C. Gordon <icculus@icculus.org> parents: 106 diff changeset	443
e46e31fdecfd Restructured to handle multiple formats. Ryan C. Gordon <icculus@icculus.org> parents: 106 diff changeset	444 rc = WAV_open_internal(sample, ext, fmt);
e46e31fdecfd Restructured to handle multiple formats. Ryan C. Gordon <icculus@icculus.org> parents: 106 diff changeset	445 if (!rc)
e46e31fdecfd Restructured to handle multiple formats. Ryan C. Gordon <icculus@icculus.org> parents: 106 diff changeset	446 {
e46e31fdecfd Restructured to handle multiple formats. Ryan C. Gordon <icculus@icculus.org> parents: 106 diff changeset	447 if (fmt->free != NULL)
e46e31fdecfd Restructured to handle multiple formats. Ryan C. Gordon <icculus@icculus.org> parents: 106 diff changeset	448 fmt->free(fmt);
e46e31fdecfd Restructured to handle multiple formats. Ryan C. Gordon <icculus@icculus.org> parents: 106 diff changeset	449 free(fmt);
e46e31fdecfd Restructured to handle multiple formats. Ryan C. Gordon <icculus@icculus.org> parents: 106 diff changeset	450 } /* if */
e46e31fdecfd Restructured to handle multiple formats. Ryan C. Gordon <icculus@icculus.org> parents: 106 diff changeset	451
e46e31fdecfd Restructured to handle multiple formats. Ryan C. Gordon <icculus@icculus.org> parents: 106 diff changeset	452 return(rc);
e46e31fdecfd Restructured to handle multiple formats. Ryan C. Gordon <icculus@icculus.org> parents: 106 diff changeset	453 } /* WAV_open */
e46e31fdecfd Restructured to handle multiple formats. Ryan C. Gordon <icculus@icculus.org> parents: 106 diff changeset	454
e46e31fdecfd Restructured to handle multiple formats. Ryan C. Gordon <icculus@icculus.org> parents: 106 diff changeset	455
e46e31fdecfd Restructured to handle multiple formats. Ryan C. Gordon <icculus@icculus.org> parents: 106 diff changeset	456 static void WAV_close(Sound_Sample *sample)
e46e31fdecfd Restructured to handle multiple formats. Ryan C. Gordon <icculus@icculus.org> parents: 106 diff changeset	457 {
e46e31fdecfd Restructured to handle multiple formats. Ryan C. Gordon <icculus@icculus.org> parents: 106 diff changeset	458 Sound_SampleInternal internal = (Sound_SampleInternal ) sample->opaque;
e46e31fdecfd Restructured to handle multiple formats. Ryan C. Gordon <icculus@icculus.org> parents: 106 diff changeset	459 wav_t w = (wav_t ) internal->decoder_private;
e46e31fdecfd Restructured to handle multiple formats. Ryan C. Gordon <icculus@icculus.org> parents: 106 diff changeset	460 w->fmt->free(w->fmt);
e46e31fdecfd Restructured to handle multiple formats. Ryan C. Gordon <icculus@icculus.org> parents: 106 diff changeset	461 free(w->fmt);
e46e31fdecfd Restructured to handle multiple formats. Ryan C. Gordon <icculus@icculus.org> parents: 106 diff changeset	462 free(w);
e46e31fdecfd Restructured to handle multiple formats. Ryan C. Gordon <icculus@icculus.org> parents: 106 diff changeset	463 } /* WAV_close */
e46e31fdecfd Restructured to handle multiple formats. Ryan C. Gordon <icculus@icculus.org> parents: 106 diff changeset	464
e46e31fdecfd Restructured to handle multiple formats. Ryan C. Gordon <icculus@icculus.org> parents: 106 diff changeset	465
e46e31fdecfd Restructured to handle multiple formats. Ryan C. Gordon <icculus@icculus.org> parents: 106 diff changeset	466 static Uint32 WAV_read(Sound_Sample *sample)
e46e31fdecfd Restructured to handle multiple formats. Ryan C. Gordon <icculus@icculus.org> parents: 106 diff changeset	467 {
e46e31fdecfd Restructured to handle multiple formats. Ryan C. Gordon <icculus@icculus.org> parents: 106 diff changeset	468 Sound_SampleInternal internal = (Sound_SampleInternal ) sample->opaque;
e46e31fdecfd Restructured to handle multiple formats. Ryan C. Gordon <icculus@icculus.org> parents: 106 diff changeset	469 wav_t w = (wav_t ) internal->decoder_private;
e46e31fdecfd Restructured to handle multiple formats. Ryan C. Gordon <icculus@icculus.org> parents: 106 diff changeset	470 return(w->fmt->read_sample(sample));
17 102cf61c0816 Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	471 } /* WAV_read */
102cf61c0816 Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	472
64 40006625142a Changes in preparation of autoconf support. Ryan C. Gordon <icculus@icculus.org> parents: 62 diff changeset	473 #endif /* SOUND_SUPPORTS_WAV */
17 102cf61c0816 Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	474
102cf61c0816 Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	475 /* end of wav.c ... */
102cf61c0816 Initial add. Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	476

Mercurial > SDL_sound_CoreAudio

annotate decoders/wav.c @ 147:9d122da5f5a9