SDL_sound_CoreAudio: decoders/aiff.c annotate

annotate decoders/aiff.c @ 306:c97be6e1bd27

Added framework for Sound_Seek() support.

author	Ryan C. Gordon <icculus@icculus.org>
date	Sun, 21 Apr 2002 18:39:47 +0000
parents	c9772a9f5271
children	8ba541e81c1e

rev	line source
34 938ef560c7bf Initial add. Thanks, Torbj�rn! Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	1 /*
938ef560c7bf Initial add. Thanks, Torbj�rn! Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	2 * SDL_sound -- An abstract sound format decoding API.
938ef560c7bf Initial add. Thanks, Torbj�rn! Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	3 * Copyright (C) 2001 Ryan C. Gordon.
938ef560c7bf Initial add. Thanks, Torbj�rn! Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	4 *
938ef560c7bf Initial add. Thanks, Torbj�rn! Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	5 * This library is free software; you can redistribute it and/or
938ef560c7bf Initial add. Thanks, Torbj�rn! Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	6 * modify it under the terms of the GNU Lesser General Public
938ef560c7bf Initial add. Thanks, Torbj�rn! Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	7 * License as published by the Free Software Foundation; either
938ef560c7bf Initial add. Thanks, Torbj�rn! Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	8 * version 2.1 of the License, or (at your option) any later version.
938ef560c7bf Initial add. Thanks, Torbj�rn! Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	9 *
938ef560c7bf Initial add. Thanks, Torbj�rn! Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	10 * This library is distributed in the hope that it will be useful,
938ef560c7bf Initial add. Thanks, Torbj�rn! Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
938ef560c7bf Initial add. Thanks, Torbj�rn! Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
938ef560c7bf Initial add. Thanks, Torbj�rn! Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	13 * Lesser General Public License for more details.
938ef560c7bf Initial add. Thanks, Torbj�rn! Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	14 *
938ef560c7bf Initial add. Thanks, Torbj�rn! Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	15 * You should have received a copy of the GNU Lesser General Public
938ef560c7bf Initial add. Thanks, Torbj�rn! Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	16 * License along with this library; if not, write to the Free Software
938ef560c7bf Initial add. Thanks, Torbj�rn! Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	17 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
938ef560c7bf Initial add. Thanks, Torbj�rn! Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	18 */
938ef560c7bf Initial add. Thanks, Torbj�rn! Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	19
938ef560c7bf Initial add. Thanks, Torbj�rn! Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	20 /*
938ef560c7bf Initial add. Thanks, Torbj�rn! Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	21 * AIFF decoder for SDL_sound
938ef560c7bf Initial add. Thanks, Torbj�rn! Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	22 *
938ef560c7bf Initial add. Thanks, Torbj�rn! Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	23 * [Insert something profound about the AIFF file format here.]
938ef560c7bf Initial add. Thanks, Torbj�rn! Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	24 *
938ef560c7bf Initial add. Thanks, Torbj�rn! Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	25 * This code was ripped from a decoder I had written for SDL_mixer, which was
938ef560c7bf Initial add. Thanks, Torbj�rn! Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	26 * based on SDL_mixer's old AIFF music loader. (This loader was unfortunately
938ef560c7bf Initial add. Thanks, Torbj�rn! Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	27 * completely broken, but it was still useful because all the pieces were
938ef560c7bf Initial add. Thanks, Torbj�rn! Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	28 * still there, so to speak.)
938ef560c7bf Initial add. Thanks, Torbj�rn! Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	29 *
938ef560c7bf Initial add. Thanks, Torbj�rn! Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	30 * When rewriting it for SDL_sound, I changed its structure to be more like
938ef560c7bf Initial add. Thanks, Torbj�rn! Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	31 * the WAV loader Ryan wrote. Had they not both been part of the same project
938ef560c7bf Initial add. Thanks, Torbj�rn! Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	32 * it would have been embarrassing how similar they are.
938ef560c7bf Initial add. Thanks, Torbj�rn! Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	33 *
938ef560c7bf Initial add. Thanks, Torbj�rn! Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	34 * It is not the most feature-complete AIFF loader the world has ever seen.
938ef560c7bf Initial add. Thanks, Torbj�rn! Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	35 * For instance, it only makes a token attempt at implementing the AIFF-C
938ef560c7bf Initial add. Thanks, Torbj�rn! Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	36 * standard; basically the parts of it that I can easily understand and test.
938ef560c7bf Initial add. Thanks, Torbj�rn! Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	37 * It's a start, though.
938ef560c7bf Initial add. Thanks, Torbj�rn! Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	38 *
184 47cc2de2ae36 Changed reference to "LICENSE" file to "COPYING". Ryan C. Gordon <icculus@icculus.org> parents: 180 diff changeset	39 * Please see the file COPYING in the source's root directory.
34 938ef560c7bf Initial add. Thanks, Torbj�rn! Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	40 *
938ef560c7bf Initial add. Thanks, Torbj�rn! Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	41 * This file was written by Torbj�rn Andersson. (d91tan@Update.UU.SE)
938ef560c7bf Initial add. Thanks, Torbj�rn! Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	42 */
938ef560c7bf Initial add. Thanks, Torbj�rn! Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	43
106 40de367eb59e Changing my include structure to do this right. Ryan C. Gordon <icculus@icculus.org> parents: 104 diff changeset	44 #if HAVE_CONFIG_H
40de367eb59e Changing my include structure to do this right. Ryan C. Gordon <icculus@icculus.org> parents: 104 diff changeset	45 # include <config.h>
40de367eb59e Changing my include structure to do this right. Ryan C. Gordon <icculus@icculus.org> parents: 104 diff changeset	46 #endif
100 6d9fdec2f708 added config.h, added --enable-debug flag, various other changes to the build system fingolfin parents: 64 diff changeset	47
104 103cfcb3c014 Updated to fix build system problem. Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	48 #ifdef SOUND_SUPPORTS_AIFF
103cfcb3c014 Updated to fix build system problem. Ryan C. Gordon <icculus@icculus.org> parents: 100 diff changeset	49
34 938ef560c7bf Initial add. Thanks, Torbj�rn! Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	50 #include <stdio.h>
938ef560c7bf Initial add. Thanks, Torbj�rn! Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	51 #include <stdlib.h>
938ef560c7bf Initial add. Thanks, Torbj�rn! Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	52 #include <string.h>
938ef560c7bf Initial add. Thanks, Torbj�rn! Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	53 #include <assert.h>
938ef560c7bf Initial add. Thanks, Torbj�rn! Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	54
106 40de367eb59e Changing my include structure to do this right. Ryan C. Gordon <icculus@icculus.org> parents: 104 diff changeset	55 #include "SDL_sound.h"
40de367eb59e Changing my include structure to do this right. Ryan C. Gordon <icculus@icculus.org> parents: 104 diff changeset	56
40de367eb59e Changing my include structure to do this right. Ryan C. Gordon <icculus@icculus.org> parents: 104 diff changeset	57 #define __SDL_SOUND_INTERNAL__
40de367eb59e Changing my include structure to do this right. Ryan C. Gordon <icculus@icculus.org> parents: 104 diff changeset	58 #include "SDL_sound_internal.h"
40de367eb59e Changing my include structure to do this right. Ryan C. Gordon <icculus@icculus.org> parents: 104 diff changeset	59
180 db3f0ee7aac0 Modified to more easily allow for different compression types. Ryan C. Gordon <icculus@icculus.org> parents: 149 diff changeset	60 static Uint32 SANE_to_Uint32 (Uint8 *sanebuf);
db3f0ee7aac0 Modified to more easily allow for different compression types. Ryan C. Gordon <icculus@icculus.org> parents: 149 diff changeset	61
db3f0ee7aac0 Modified to more easily allow for different compression types. Ryan C. Gordon <icculus@icculus.org> parents: 149 diff changeset	62
47 ea58bc3b15d7 Added init() and quit() methods. Ryan C. Gordon <icculus@icculus.org> parents: 41 diff changeset	63 static int AIFF_init(void);
ea58bc3b15d7 Added init() and quit() methods. Ryan C. Gordon <icculus@icculus.org> parents: 41 diff changeset	64 static void AIFF_quit(void);
34 938ef560c7bf Initial add. Thanks, Torbj�rn! Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	65 static int AIFF_open(Sound_Sample sample, const char ext);
938ef560c7bf Initial add. Thanks, Torbj�rn! Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	66 static void AIFF_close(Sound_Sample *sample);
938ef560c7bf Initial add. Thanks, Torbj�rn! Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	67 static Uint32 AIFF_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	68 static int AIFF_rewind(Sound_Sample *sample);
306 c97be6e1bd27 Added framework for Sound_Seek() support. Ryan C. Gordon <icculus@icculus.org> parents: 221 diff changeset	69 static int AIFF_seek(Sound_Sample *sample, Uint32 ms);
34 938ef560c7bf Initial add. Thanks, Torbj�rn! Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	70
149 1df5c106504e Decoders can now list multiple file extensions. Ryan C. Gordon <icculus@icculus.org> parents: 116 diff changeset	71 static const char *extensions_aiff[] = { "AIFF", NULL };
34 938ef560c7bf Initial add. Thanks, Torbj�rn! Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	72 const Sound_DecoderFunctions __Sound_DecoderFunctions_AIFF =
938ef560c7bf Initial add. Thanks, Torbj�rn! Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	73 {
938ef560c7bf Initial add. Thanks, Torbj�rn! Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	74 {
149 1df5c106504e Decoders can now list multiple file extensions. Ryan C. Gordon <icculus@icculus.org> parents: 116 diff changeset	75 extensions_aiff,
34 938ef560c7bf Initial add. Thanks, Torbj�rn! Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	76 "Audio Interchange File Format",
938ef560c7bf Initial add. Thanks, Torbj�rn! Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	77 "Torbj�rn Andersson <d91tan@Update.UU.SE>",
938ef560c7bf Initial add. Thanks, Torbj�rn! Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	78 "http://www.icculus.org/SDL_sound/"
938ef560c7bf Initial add. Thanks, Torbj�rn! Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	79 },
938ef560c7bf Initial add. Thanks, Torbj�rn! Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	80
221 c9772a9f5271 Initial implementation or stubs for rewind method. Other cleanups. Ryan C. Gordon <icculus@icculus.org> parents: 184 diff changeset	81 AIFF_init, /* init() method */
c9772a9f5271 Initial implementation or stubs for rewind method. Other cleanups. Ryan C. Gordon <icculus@icculus.org> parents: 184 diff changeset	82 AIFF_quit, /* quit() method */
c9772a9f5271 Initial implementation or stubs for rewind method. Other cleanups. Ryan C. Gordon <icculus@icculus.org> parents: 184 diff changeset	83 AIFF_open, /* open() method */
c9772a9f5271 Initial implementation or stubs for rewind method. Other cleanups. Ryan C. Gordon <icculus@icculus.org> parents: 184 diff changeset	84 AIFF_close, /* close() method */
c9772a9f5271 Initial implementation or stubs for rewind method. Other cleanups. Ryan C. Gordon <icculus@icculus.org> parents: 184 diff changeset	85 AIFF_read, /* read() method */
306 c97be6e1bd27 Added framework for Sound_Seek() support. Ryan C. Gordon <icculus@icculus.org> parents: 221 diff changeset	86 AIFF_rewind, /* rewind() method */
c97be6e1bd27 Added framework for Sound_Seek() support. Ryan C. Gordon <icculus@icculus.org> parents: 221 diff changeset	87 AIFF_seek /* seek() method */
34 938ef560c7bf Initial add. Thanks, Torbj�rn! Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	88 };
938ef560c7bf Initial add. Thanks, Torbj�rn! Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	89
938ef560c7bf Initial add. Thanks, Torbj�rn! Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	90
180 db3f0ee7aac0 Modified to more easily allow for different compression types. Ryan C. Gordon <icculus@icculus.org> parents: 149 diff changeset	91 /*****************************************************************************
db3f0ee7aac0 Modified to more easily allow for different compression types. Ryan C. Gordon <icculus@icculus.org> parents: 149 diff changeset	92 * aiff_t is what we store in our internal->decoder_private field... *
db3f0ee7aac0 Modified to more easily allow for different compression types. Ryan C. Gordon <icculus@icculus.org> parents: 149 diff changeset	93 *****************************************************************************/
db3f0ee7aac0 Modified to more easily allow for different compression types. Ryan C. Gordon <icculus@icculus.org> parents: 149 diff changeset	94 typedef struct S_AIFF_FMT_T
db3f0ee7aac0 Modified to more easily allow for different compression types. Ryan C. Gordon <icculus@icculus.org> parents: 149 diff changeset	95 {
db3f0ee7aac0 Modified to more easily allow for different compression types. Ryan C. Gordon <icculus@icculus.org> parents: 149 diff changeset	96 Uint32 type;
221 c9772a9f5271 Initial implementation or stubs for rewind method. Other cleanups. Ryan C. Gordon <icculus@icculus.org> parents: 184 diff changeset	97
c9772a9f5271 Initial implementation or stubs for rewind method. Other cleanups. Ryan C. Gordon <icculus@icculus.org> parents: 184 diff changeset	98 Uint32 total_bytes;
c9772a9f5271 Initial implementation or stubs for rewind method. Other cleanups. Ryan C. Gordon <icculus@icculus.org> parents: 184 diff changeset	99 Uint32 data_starting_offset;
c9772a9f5271 Initial implementation or stubs for rewind method. Other cleanups. Ryan C. Gordon <icculus@icculus.org> parents: 184 diff changeset	100
180 db3f0ee7aac0 Modified to more easily allow for different compression types. Ryan C. Gordon <icculus@icculus.org> parents: 149 diff changeset	101 void (free)(struct S_AIFF_FMT_T fmt);
221 c9772a9f5271 Initial implementation or stubs for rewind method. Other cleanups. Ryan C. Gordon <icculus@icculus.org> parents: 184 diff changeset	102 Uint32 (read_sample)(Sound_Sample sample);
c9772a9f5271 Initial implementation or stubs for rewind method. Other cleanups. Ryan C. Gordon <icculus@icculus.org> parents: 184 diff changeset	103 int (rewind_sample)(Sound_Sample sample);
c9772a9f5271 Initial implementation or stubs for rewind method. Other cleanups. Ryan C. Gordon <icculus@icculus.org> parents: 184 diff changeset	104
180 db3f0ee7aac0 Modified to more easily allow for different compression types. Ryan C. Gordon <icculus@icculus.org> parents: 149 diff changeset	105
db3f0ee7aac0 Modified to more easily allow for different compression types. Ryan C. Gordon <icculus@icculus.org> parents: 149 diff changeset	106 #if 0
db3f0ee7aac0 Modified to more easily allow for different compression types. Ryan C. Gordon <icculus@icculus.org> parents: 149 diff changeset	107 /*
db3f0ee7aac0 Modified to more easily allow for different compression types. Ryan C. Gordon <icculus@icculus.org> parents: 149 diff changeset	108 this is ripped from wav.c as ann example of format-specific data.
db3f0ee7aac0 Modified to more easily allow for different compression types. Ryan C. Gordon <icculus@icculus.org> parents: 149 diff changeset	109 please replace with something more appropriate when the need arises.
db3f0ee7aac0 Modified to more easily allow for different compression types. Ryan C. Gordon <icculus@icculus.org> parents: 149 diff changeset	110 */
db3f0ee7aac0 Modified to more easily allow for different compression types. Ryan C. Gordon <icculus@icculus.org> parents: 149 diff changeset	111 union
db3f0ee7aac0 Modified to more easily allow for different compression types. Ryan C. Gordon <icculus@icculus.org> parents: 149 diff changeset	112 {
db3f0ee7aac0 Modified to more easily allow for different compression types. Ryan C. Gordon <icculus@icculus.org> parents: 149 diff changeset	113 struct
db3f0ee7aac0 Modified to more easily allow for different compression types. Ryan C. Gordon <icculus@icculus.org> parents: 149 diff changeset	114 {
db3f0ee7aac0 Modified to more easily allow for different compression types. Ryan C. Gordon <icculus@icculus.org> parents: 149 diff changeset	115 Uint16 cbSize;
db3f0ee7aac0 Modified to more easily allow for different compression types. Ryan C. Gordon <icculus@icculus.org> parents: 149 diff changeset	116 Uint16 wSamplesPerBlock;
db3f0ee7aac0 Modified to more easily allow for different compression types. Ryan C. Gordon <icculus@icculus.org> parents: 149 diff changeset	117 Uint16 wNumCoef;
db3f0ee7aac0 Modified to more easily allow for different compression types. Ryan C. Gordon <icculus@icculus.org> parents: 149 diff changeset	118 ADPCMCOEFSET *aCoeff;
db3f0ee7aac0 Modified to more easily allow for different compression types. Ryan C. Gordon <icculus@icculus.org> parents: 149 diff changeset	119 } adpcm;
db3f0ee7aac0 Modified to more easily allow for different compression types. Ryan C. Gordon <icculus@icculus.org> parents: 149 diff changeset	120
db3f0ee7aac0 Modified to more easily allow for different compression types. Ryan C. Gordon <icculus@icculus.org> parents: 149 diff changeset	121 /* put other format-specific data here... */
db3f0ee7aac0 Modified to more easily allow for different compression types. Ryan C. Gordon <icculus@icculus.org> parents: 149 diff changeset	122 } fmt;
db3f0ee7aac0 Modified to more easily allow for different compression types. Ryan C. Gordon <icculus@icculus.org> parents: 149 diff changeset	123 #endif
db3f0ee7aac0 Modified to more easily allow for different compression types. Ryan C. Gordon <icculus@icculus.org> parents: 149 diff changeset	124 } fmt_t;
db3f0ee7aac0 Modified to more easily allow for different compression types. Ryan C. Gordon <icculus@icculus.org> parents: 149 diff changeset	125
db3f0ee7aac0 Modified to more easily allow for different compression types. Ryan C. Gordon <icculus@icculus.org> parents: 149 diff changeset	126
db3f0ee7aac0 Modified to more easily allow for different compression types. Ryan C. Gordon <icculus@icculus.org> parents: 149 diff changeset	127 typedef struct
db3f0ee7aac0 Modified to more easily allow for different compression types. Ryan C. Gordon <icculus@icculus.org> parents: 149 diff changeset	128 {
db3f0ee7aac0 Modified to more easily allow for different compression types. Ryan C. Gordon <icculus@icculus.org> parents: 149 diff changeset	129 fmt_t fmt;
34 938ef560c7bf Initial add. Thanks, Torbj�rn! Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	130 Sint32 bytesLeft;
938ef560c7bf Initial add. Thanks, Torbj�rn! Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	131 } aiff_t;
938ef560c7bf Initial add. Thanks, Torbj�rn! Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	132
938ef560c7bf Initial add. Thanks, Torbj�rn! Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	133
180 db3f0ee7aac0 Modified to more easily allow for different compression types. Ryan C. Gordon <icculus@icculus.org> parents: 149 diff changeset	134
34 938ef560c7bf Initial add. Thanks, Torbj�rn! Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	135 /* Chunk management code... */
938ef560c7bf Initial add. Thanks, Torbj�rn! Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	136
180 db3f0ee7aac0 Modified to more easily allow for different compression types. Ryan C. Gordon <icculus@icculus.org> parents: 149 diff changeset	137 #define formID 0x4D524F46 /* "FORM", in ascii. */
34 938ef560c7bf Initial add. Thanks, Torbj�rn! Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	138 #define aiffID 0x46464941 /* "AIFF", in ascii. */
938ef560c7bf Initial add. Thanks, Torbj�rn! Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	139 #define aifcID 0x43464941 /* "AIFC", in ascii. */
180 db3f0ee7aac0 Modified to more easily allow for different compression types. Ryan C. Gordon <icculus@icculus.org> parents: 149 diff changeset	140 #define ssndID 0x444E5353 /* "SSND", in ascii. */
db3f0ee7aac0 Modified to more easily allow for different compression types. Ryan C. Gordon <icculus@icculus.org> parents: 149 diff changeset	141
34 938ef560c7bf Initial add. Thanks, Torbj�rn! Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	142
180 db3f0ee7aac0 Modified to more easily allow for different compression types. Ryan C. Gordon <icculus@icculus.org> parents: 149 diff changeset	143 /*****************************************************************************
db3f0ee7aac0 Modified to more easily allow for different compression types. Ryan C. Gordon <icculus@icculus.org> parents: 149 diff changeset	144 * The COMM chunk... *
db3f0ee7aac0 Modified to more easily allow for different compression types. Ryan C. Gordon <icculus@icculus.org> parents: 149 diff changeset	145 *****************************************************************************/
db3f0ee7aac0 Modified to more easily allow for different compression types. Ryan C. Gordon <icculus@icculus.org> parents: 149 diff changeset	146
db3f0ee7aac0 Modified to more easily allow for different compression types. Ryan C. Gordon <icculus@icculus.org> parents: 149 diff changeset	147 #define commID 0x4D4D4F43 /* "COMM", in ascii. */
db3f0ee7aac0 Modified to more easily allow for different compression types. Ryan C. Gordon <icculus@icculus.org> parents: 149 diff changeset	148
db3f0ee7aac0 Modified to more easily allow for different compression types. Ryan C. Gordon <icculus@icculus.org> parents: 149 diff changeset	149 /* format/compression types... */
db3f0ee7aac0 Modified to more easily allow for different compression types. Ryan C. Gordon <icculus@icculus.org> parents: 149 diff changeset	150 #define noneID 0x454E4F4E /* "NONE", in ascii. */
34 938ef560c7bf Initial add. Thanks, Torbj�rn! Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	151
938ef560c7bf Initial add. Thanks, Torbj�rn! Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	152 typedef struct
938ef560c7bf Initial add. Thanks, Torbj�rn! Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	153 {
938ef560c7bf Initial add. Thanks, Torbj�rn! Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	154 Uint32 ckID;
938ef560c7bf Initial add. Thanks, Torbj�rn! Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	155 Uint32 ckDataSize;
938ef560c7bf Initial add. Thanks, Torbj�rn! Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	156 Uint16 numChannels;
938ef560c7bf Initial add. Thanks, Torbj�rn! Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	157 Uint32 numSampleFrames;
938ef560c7bf Initial add. Thanks, Torbj�rn! Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	158 Uint16 sampleSize;
938ef560c7bf Initial add. Thanks, Torbj�rn! Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	159 Uint32 sampleRate;
938ef560c7bf Initial add. Thanks, Torbj�rn! Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	160 /*
938ef560c7bf Initial add. Thanks, Torbj�rn! Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	161 * We don't handle AIFF-C compressed audio yet, but for those
938ef560c7bf Initial add. Thanks, Torbj�rn! Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	162 * interested the allowed compression types are supposed to be
938ef560c7bf Initial add. Thanks, Torbj�rn! Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	163 *
938ef560c7bf Initial add. Thanks, Torbj�rn! Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	164 * compressionType compressionName meaning
938ef560c7bf Initial add. Thanks, Torbj�rn! Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	165 * ---------------------------------------------------------------
938ef560c7bf Initial add. Thanks, Torbj�rn! Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	166 * 'NONE' "not compressed" uncompressed, that is,
938ef560c7bf Initial add. Thanks, Torbj�rn! Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	167 * straight digitized samples
938ef560c7bf Initial add. Thanks, Torbj�rn! Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	168 * 'ACE2' "ACE 2-to-1" 2-to-1 IIGS ACE (Audio
938ef560c7bf Initial add. Thanks, Torbj�rn! Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	169 * Compression / Expansion)
938ef560c7bf Initial add. Thanks, Torbj�rn! Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	170 * 'ACE8' "ACE 8-to-3" 8-to-3 IIGS ACE (Audio
938ef560c7bf Initial add. Thanks, Torbj�rn! Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	171 * Compression / Expansion)
938ef560c7bf Initial add. Thanks, Torbj�rn! Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	172 * 'MAC3' "MACE 3-to-1" 3-to-1 Macintosh Audio
938ef560c7bf Initial add. Thanks, Torbj�rn! Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	173 * Compression / Expansion
938ef560c7bf Initial add. Thanks, Torbj�rn! Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	174 * 'MAC6' "MACE 6-to-1" 6-to-1 Macintosh Audio
938ef560c7bf Initial add. Thanks, Torbj�rn! Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	175 * Compression / Expansion
938ef560c7bf Initial add. Thanks, Torbj�rn! Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	176 *
938ef560c7bf Initial add. Thanks, Torbj�rn! Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	177 * A pstring is a "Pascal-style string", that is, "one byte followed
938ef560c7bf Initial add. Thanks, Torbj�rn! Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	178 * by test bytes followed when needed by one pad byte. The total
938ef560c7bf Initial add. Thanks, Torbj�rn! Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	179 * number of bytes in a pstring must be even. The pad byte is
938ef560c7bf Initial add. Thanks, Torbj�rn! Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	180 * included when the number of text bytes is even, so the total of
938ef560c7bf Initial add. Thanks, Torbj�rn! Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	181 * text bytes + one count byte + one pad byte will be even. This pad
938ef560c7bf Initial add. Thanks, Torbj�rn! Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	182 * byte is not reflected in the count."
938ef560c7bf Initial add. Thanks, Torbj�rn! Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	183 *
938ef560c7bf Initial add. Thanks, Torbj�rn! Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	184 * As for how these compression algorithms work, your guess is as
938ef560c7bf Initial add. Thanks, Torbj�rn! Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	185 * good as mine.
938ef560c7bf Initial add. Thanks, Torbj�rn! Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	186 */
938ef560c7bf Initial add. Thanks, Torbj�rn! Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	187 Uint32 compressionType;
938ef560c7bf Initial add. Thanks, Torbj�rn! Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	188 #if 0
938ef560c7bf Initial add. Thanks, Torbj�rn! Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	189 pstring compressionName;
938ef560c7bf Initial add. Thanks, Torbj�rn! Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	190 #endif
938ef560c7bf Initial add. Thanks, Torbj�rn! Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	191 } comm_t;
938ef560c7bf Initial add. Thanks, Torbj�rn! Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	192
938ef560c7bf Initial add. Thanks, Torbj�rn! Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	193
938ef560c7bf Initial add. Thanks, Torbj�rn! Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	194 /*
938ef560c7bf Initial add. Thanks, Torbj�rn! Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	195 * Read in a comm_t from disk. This makes this process safe regardless of
938ef560c7bf Initial add. Thanks, Torbj�rn! Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	196 * the processor's byte order or how the comm_t structure is packed.
938ef560c7bf Initial add. Thanks, Torbj�rn! Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	197 */
938ef560c7bf Initial add. Thanks, Torbj�rn! Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	198
938ef560c7bf Initial add. Thanks, Torbj�rn! Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	199 static int read_comm_chunk(SDL_RWops rw, comm_t comm)
938ef560c7bf Initial add. Thanks, Torbj�rn! Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	200 {
938ef560c7bf Initial add. Thanks, Torbj�rn! Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	201 Uint8 sampleRate[10];
938ef560c7bf Initial add. Thanks, Torbj�rn! Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	202
938ef560c7bf Initial add. Thanks, Torbj�rn! Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	203 /* skip reading the chunk ID, since it was already read at this point... */
938ef560c7bf Initial add. Thanks, Torbj�rn! Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	204 comm->ckID = commID;
938ef560c7bf Initial add. Thanks, Torbj�rn! Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	205
938ef560c7bf Initial add. Thanks, Torbj�rn! Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	206 if (SDL_RWread(rw, &comm->ckDataSize, sizeof (comm->ckDataSize), 1) != 1)
938ef560c7bf Initial add. Thanks, Torbj�rn! Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	207 return(0);
938ef560c7bf Initial add. Thanks, Torbj�rn! Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	208 comm->ckDataSize = SDL_SwapBE32(comm->ckDataSize);
938ef560c7bf Initial add. Thanks, Torbj�rn! Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	209
938ef560c7bf Initial add. Thanks, Torbj�rn! Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	210 if (SDL_RWread(rw, &comm->numChannels, sizeof (comm->numChannels), 1) != 1)
938ef560c7bf Initial add. Thanks, Torbj�rn! Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	211 return(0);
938ef560c7bf Initial add. Thanks, Torbj�rn! Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	212 comm->numChannels = SDL_SwapBE16(comm->numChannels);
938ef560c7bf Initial add. Thanks, Torbj�rn! Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	213
41 0d5ff5679523 Cleanups from Torbj�rn Andersson. Ryan C. Gordon <icculus@icculus.org> parents: 34 diff changeset	214 if (SDL_RWread(rw, &comm->numSampleFrames,
0d5ff5679523 Cleanups from Torbj�rn Andersson. Ryan C. Gordon <icculus@icculus.org> parents: 34 diff changeset	215 sizeof (comm->numSampleFrames), 1) != 1)
34 938ef560c7bf Initial add. Thanks, Torbj�rn! Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	216 return(0);
938ef560c7bf Initial add. Thanks, Torbj�rn! Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	217 comm->numSampleFrames = SDL_SwapBE32(comm->numSampleFrames);
938ef560c7bf Initial add. Thanks, Torbj�rn! Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	218
938ef560c7bf Initial add. Thanks, Torbj�rn! Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	219 if (SDL_RWread(rw, &comm->sampleSize, sizeof (comm->sampleSize), 1) != 1)
938ef560c7bf Initial add. Thanks, Torbj�rn! Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	220 return(0);
938ef560c7bf Initial add. Thanks, Torbj�rn! Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	221 comm->sampleSize = SDL_SwapBE16(comm->sampleSize);
938ef560c7bf Initial add. Thanks, Torbj�rn! Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	222
41 0d5ff5679523 Cleanups from Torbj�rn Andersson. Ryan C. Gordon <icculus@icculus.org> parents: 34 diff changeset	223 if (SDL_RWread(rw, sampleRate, sizeof (sampleRate), 1) != 1)
34 938ef560c7bf Initial add. Thanks, Torbj�rn! Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	224 return(0);
938ef560c7bf Initial add. Thanks, Torbj�rn! Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	225 comm->sampleRate = SANE_to_Uint32(sampleRate);
938ef560c7bf Initial add. Thanks, Torbj�rn! Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	226
938ef560c7bf Initial add. Thanks, Torbj�rn! Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	227 if (comm->ckDataSize > sizeof(comm->numChannels)
938ef560c7bf Initial add. Thanks, Torbj�rn! Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	228 + sizeof(comm->numSampleFrames)
938ef560c7bf Initial add. Thanks, Torbj�rn! Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	229 + sizeof(comm->sampleSize)
938ef560c7bf Initial add. Thanks, Torbj�rn! Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	230 + sizeof(sampleRate))
938ef560c7bf Initial add. Thanks, Torbj�rn! Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	231 {
41 0d5ff5679523 Cleanups from Torbj�rn Andersson. Ryan C. Gordon <icculus@icculus.org> parents: 34 diff changeset	232 if (SDL_RWread(rw, &comm->compressionType,
0d5ff5679523 Cleanups from Torbj�rn Andersson. Ryan C. Gordon <icculus@icculus.org> parents: 34 diff changeset	233 sizeof (comm->compressionType), 1) != 1)
34 938ef560c7bf Initial add. Thanks, Torbj�rn! Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	234 return(0);
938ef560c7bf Initial add. Thanks, Torbj�rn! Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	235 comm->compressionType = SDL_SwapBE32(comm->compressionType);
938ef560c7bf Initial add. Thanks, Torbj�rn! Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	236 } /* if */
938ef560c7bf Initial add. Thanks, Torbj�rn! Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	237 else
180 db3f0ee7aac0 Modified to more easily allow for different compression types. Ryan C. Gordon <icculus@icculus.org> parents: 149 diff changeset	238 {
34 938ef560c7bf Initial add. Thanks, Torbj�rn! Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	239 comm->compressionType = noneID;
180 db3f0ee7aac0 Modified to more easily allow for different compression types. Ryan C. Gordon <icculus@icculus.org> parents: 149 diff changeset	240 } /* else */
34 938ef560c7bf Initial add. Thanks, Torbj�rn! Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	241
938ef560c7bf Initial add. Thanks, Torbj�rn! Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	242 return(1);
938ef560c7bf Initial add. Thanks, Torbj�rn! Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	243 } /* read_comm_chunk */
938ef560c7bf Initial add. Thanks, Torbj�rn! Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	244
180 db3f0ee7aac0 Modified to more easily allow for different compression types. Ryan C. Gordon <icculus@icculus.org> parents: 149 diff changeset	245
db3f0ee7aac0 Modified to more easily allow for different compression types. Ryan C. Gordon <icculus@icculus.org> parents: 149 diff changeset	246
db3f0ee7aac0 Modified to more easily allow for different compression types. Ryan C. Gordon <icculus@icculus.org> parents: 149 diff changeset	247 /*****************************************************************************
db3f0ee7aac0 Modified to more easily allow for different compression types. Ryan C. Gordon <icculus@icculus.org> parents: 149 diff changeset	248 * The SSND chunk... *
db3f0ee7aac0 Modified to more easily allow for different compression types. Ryan C. Gordon <icculus@icculus.org> parents: 149 diff changeset	249 *****************************************************************************/
db3f0ee7aac0 Modified to more easily allow for different compression types. Ryan C. Gordon <icculus@icculus.org> parents: 149 diff changeset	250
34 938ef560c7bf Initial add. Thanks, Torbj�rn! Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	251 typedef struct
938ef560c7bf Initial add. Thanks, Torbj�rn! Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	252 {
938ef560c7bf Initial add. Thanks, Torbj�rn! Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	253 Uint32 ckID;
938ef560c7bf Initial add. Thanks, Torbj�rn! Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	254 Uint32 ckDataSize;
938ef560c7bf Initial add. Thanks, Torbj�rn! Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	255 Uint32 offset;
938ef560c7bf Initial add. Thanks, Torbj�rn! Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	256 Uint32 blockSize;
938ef560c7bf Initial add. Thanks, Torbj�rn! Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	257 /*
938ef560c7bf Initial add. Thanks, Torbj�rn! Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	258 * Then, comm->numSampleFrames sample frames. (It's better to get the
938ef560c7bf Initial add. Thanks, Torbj�rn! Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	259 * length from numSampleFrames than from ckDataSize.)
938ef560c7bf Initial add. Thanks, Torbj�rn! Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	260 */
938ef560c7bf Initial add. Thanks, Torbj�rn! Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	261 } ssnd_t;
938ef560c7bf Initial add. Thanks, Torbj�rn! Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	262
938ef560c7bf Initial add. Thanks, Torbj�rn! Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	263
938ef560c7bf Initial add. Thanks, Torbj�rn! Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	264 static int read_ssnd_chunk(SDL_RWops rw, ssnd_t ssnd)
938ef560c7bf Initial add. Thanks, Torbj�rn! Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	265 {
938ef560c7bf Initial add. Thanks, Torbj�rn! Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	266 /* skip reading the chunk ID, since it was already read at this point... */
938ef560c7bf Initial add. Thanks, Torbj�rn! Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	267 ssnd->ckID = ssndID;
938ef560c7bf Initial add. Thanks, Torbj�rn! Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	268
938ef560c7bf Initial add. Thanks, Torbj�rn! Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	269 if (SDL_RWread(rw, &ssnd->ckDataSize, sizeof (ssnd->ckDataSize), 1) != 1)
938ef560c7bf Initial add. Thanks, Torbj�rn! Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	270 return(0);
938ef560c7bf Initial add. Thanks, Torbj�rn! Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	271 ssnd->ckDataSize = SDL_SwapBE32(ssnd->ckDataSize);
938ef560c7bf Initial add. Thanks, Torbj�rn! Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	272
41 0d5ff5679523 Cleanups from Torbj�rn Andersson. Ryan C. Gordon <icculus@icculus.org> parents: 34 diff changeset	273 if (SDL_RWread(rw, &ssnd->offset, sizeof (ssnd->offset), 1) != 1)
34 938ef560c7bf Initial add. Thanks, Torbj�rn! Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	274 return(0);
938ef560c7bf Initial add. Thanks, Torbj�rn! Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	275 ssnd->offset = SDL_SwapBE32(ssnd->offset);
938ef560c7bf Initial add. Thanks, Torbj�rn! Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	276
41 0d5ff5679523 Cleanups from Torbj�rn Andersson. Ryan C. Gordon <icculus@icculus.org> parents: 34 diff changeset	277 if (SDL_RWread(rw, &ssnd->blockSize, sizeof (ssnd->blockSize), 1) != 1)
34 938ef560c7bf Initial add. Thanks, Torbj�rn! Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	278 return(0);
938ef560c7bf Initial add. Thanks, Torbj�rn! Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	279 ssnd->blockSize = SDL_SwapBE32(ssnd->blockSize);
938ef560c7bf Initial add. Thanks, Torbj�rn! Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	280
938ef560c7bf Initial add. Thanks, Torbj�rn! Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	281 /* Leave the SDL_RWops position indicator at the start of the samples */
41 0d5ff5679523 Cleanups from Torbj�rn Andersson. Ryan C. Gordon <icculus@icculus.org> parents: 34 diff changeset	282 /* !!! FIXME: Int? Really? */
0d5ff5679523 Cleanups from Torbj�rn Andersson. Ryan C. Gordon <icculus@icculus.org> parents: 34 diff changeset	283 if (SDL_RWseek(rw, (int) ssnd->offset, SEEK_CUR) == -1)
34 938ef560c7bf Initial add. Thanks, Torbj�rn! Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	284 return(0);
938ef560c7bf Initial add. Thanks, Torbj�rn! Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	285
938ef560c7bf Initial add. Thanks, Torbj�rn! Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	286 return(1);
938ef560c7bf Initial add. Thanks, Torbj�rn! Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	287 } /* read_ssnd_chunk */
938ef560c7bf Initial add. Thanks, Torbj�rn! Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	288
938ef560c7bf Initial add. Thanks, Torbj�rn! Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	289
938ef560c7bf Initial add. Thanks, Torbj�rn! Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	290
180 db3f0ee7aac0 Modified to more easily allow for different compression types. Ryan C. Gordon <icculus@icculus.org> parents: 149 diff changeset	291 /*****************************************************************************
db3f0ee7aac0 Modified to more easily allow for different compression types. Ryan C. Gordon <icculus@icculus.org> parents: 149 diff changeset	292 * Normal, uncompressed aiff handler... *
db3f0ee7aac0 Modified to more easily allow for different compression types. Ryan C. Gordon <icculus@icculus.org> parents: 149 diff changeset	293 *****************************************************************************/
34 938ef560c7bf Initial add. Thanks, Torbj�rn! Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	294
180 db3f0ee7aac0 Modified to more easily allow for different compression types. Ryan C. Gordon <icculus@icculus.org> parents: 149 diff changeset	295 static Uint32 read_sample_fmt_normal(Sound_Sample *sample)
34 938ef560c7bf Initial add. Thanks, Torbj�rn! Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	296 {
938ef560c7bf Initial add. Thanks, Torbj�rn! Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	297 Uint32 retval;
938ef560c7bf Initial add. Thanks, Torbj�rn! Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	298 Sound_SampleInternal internal = (Sound_SampleInternal ) sample->opaque;
938ef560c7bf Initial add. Thanks, Torbj�rn! Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	299 aiff_t a = (aiff_t ) internal->decoder_private;
938ef560c7bf Initial add. Thanks, Torbj�rn! Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	300 Uint32 max = (internal->buffer_size < (Uint32) a->bytesLeft) ?
938ef560c7bf Initial add. Thanks, Torbj�rn! Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	301 internal->buffer_size : (Uint32) a->bytesLeft;
938ef560c7bf Initial add. Thanks, Torbj�rn! Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	302
938ef560c7bf Initial add. Thanks, Torbj�rn! Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	303 assert(max > 0);
938ef560c7bf Initial add. Thanks, Torbj�rn! Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	304
938ef560c7bf Initial add. Thanks, Torbj�rn! Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	305 /*
938ef560c7bf Initial add. Thanks, Torbj�rn! Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	306 * We don't actually do any decoding, so we read the AIFF data
938ef560c7bf Initial add. Thanks, Torbj�rn! Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	307 * directly into the internal buffer...
938ef560c7bf Initial add. Thanks, Torbj�rn! Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	308 */
938ef560c7bf Initial add. Thanks, Torbj�rn! Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	309 retval = SDL_RWread(internal->rw, internal->buffer, 1, max);
938ef560c7bf Initial add. Thanks, Torbj�rn! Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	310
938ef560c7bf Initial add. Thanks, Torbj�rn! Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	311 a->bytesLeft -= retval;
938ef560c7bf Initial add. Thanks, Torbj�rn! Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	312
938ef560c7bf Initial add. Thanks, Torbj�rn! Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	313 /* Make sure the read went smoothly... */
938ef560c7bf Initial add. Thanks, Torbj�rn! Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	314 if ((retval == 0) \|\| (a->bytesLeft == 0))
938ef560c7bf Initial add. Thanks, Torbj�rn! Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	315 sample->flags \|= SOUND_SAMPLEFLAG_EOF;
938ef560c7bf Initial add. Thanks, Torbj�rn! Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	316
938ef560c7bf Initial add. Thanks, Torbj�rn! Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	317 else if (retval == -1)
938ef560c7bf Initial add. Thanks, Torbj�rn! Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	318 sample->flags \|= SOUND_SAMPLEFLAG_ERROR;
938ef560c7bf Initial add. Thanks, Torbj�rn! Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	319
938ef560c7bf Initial add. Thanks, Torbj�rn! Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	320 /* (next call this EAGAIN may turn into an EOF or error.) */
938ef560c7bf Initial add. Thanks, Torbj�rn! Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	321 else if (retval < internal->buffer_size)
938ef560c7bf Initial add. Thanks, Torbj�rn! Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	322 sample->flags \|= SOUND_SAMPLEFLAG_EAGAIN;
938ef560c7bf Initial add. Thanks, Torbj�rn! Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	323
938ef560c7bf Initial add. Thanks, Torbj�rn! Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	324 return(retval);
180 db3f0ee7aac0 Modified to more easily allow for different compression types. Ryan C. Gordon <icculus@icculus.org> parents: 149 diff changeset	325 } /* read_sample_fmt_normal */
db3f0ee7aac0 Modified to more easily allow for different compression types. Ryan C. Gordon <icculus@icculus.org> parents: 149 diff changeset	326
db3f0ee7aac0 Modified to more easily allow for different compression types. Ryan C. Gordon <icculus@icculus.org> parents: 149 diff changeset	327
221 c9772a9f5271 Initial implementation or stubs for rewind method. Other cleanups. Ryan C. Gordon <icculus@icculus.org> parents: 184 diff changeset	328 static int rewind_sample_fmt_normal(Sound_Sample *sample)
c9772a9f5271 Initial implementation or stubs for rewind method. Other cleanups. Ryan C. Gordon <icculus@icculus.org> parents: 184 diff changeset	329 {
c9772a9f5271 Initial implementation or stubs for rewind method. Other cleanups. Ryan C. Gordon <icculus@icculus.org> parents: 184 diff changeset	330 /* no-op. */
c9772a9f5271 Initial implementation or stubs for rewind method. Other cleanups. Ryan C. Gordon <icculus@icculus.org> parents: 184 diff changeset	331 return(1);
c9772a9f5271 Initial implementation or stubs for rewind method. Other cleanups. Ryan C. Gordon <icculus@icculus.org> parents: 184 diff changeset	332 } /* rewind_sample_fmt_normal */
c9772a9f5271 Initial implementation or stubs for rewind method. Other cleanups. Ryan C. Gordon <icculus@icculus.org> parents: 184 diff changeset	333
c9772a9f5271 Initial implementation or stubs for rewind method. Other cleanups. Ryan C. Gordon <icculus@icculus.org> parents: 184 diff changeset	334
180 db3f0ee7aac0 Modified to more easily allow for different compression types. Ryan C. Gordon <icculus@icculus.org> parents: 149 diff changeset	335 static void free_fmt_normal(fmt_t *fmt)
db3f0ee7aac0 Modified to more easily allow for different compression types. Ryan C. Gordon <icculus@icculus.org> parents: 149 diff changeset	336 {
db3f0ee7aac0 Modified to more easily allow for different compression types. Ryan C. Gordon <icculus@icculus.org> parents: 149 diff changeset	337 /* it's a no-op. */
db3f0ee7aac0 Modified to more easily allow for different compression types. Ryan C. Gordon <icculus@icculus.org> parents: 149 diff changeset	338 } /* free_fmt_normal */
db3f0ee7aac0 Modified to more easily allow for different compression types. Ryan C. Gordon <icculus@icculus.org> parents: 149 diff changeset	339
db3f0ee7aac0 Modified to more easily allow for different compression types. Ryan C. Gordon <icculus@icculus.org> parents: 149 diff changeset	340
db3f0ee7aac0 Modified to more easily allow for different compression types. Ryan C. Gordon <icculus@icculus.org> parents: 149 diff changeset	341 static int read_fmt_normal(SDL_RWops rw, fmt_t fmt)
db3f0ee7aac0 Modified to more easily allow for different compression types. Ryan C. Gordon <icculus@icculus.org> parents: 149 diff changeset	342 {
db3f0ee7aac0 Modified to more easily allow for different compression types. Ryan C. Gordon <icculus@icculus.org> parents: 149 diff changeset	343 /* (don't need to read more from the RWops...) */
db3f0ee7aac0 Modified to more easily allow for different compression types. Ryan C. Gordon <icculus@icculus.org> parents: 149 diff changeset	344 fmt->free = free_fmt_normal;
db3f0ee7aac0 Modified to more easily allow for different compression types. Ryan C. Gordon <icculus@icculus.org> parents: 149 diff changeset	345 fmt->read_sample = read_sample_fmt_normal;
221 c9772a9f5271 Initial implementation or stubs for rewind method. Other cleanups. Ryan C. Gordon <icculus@icculus.org> parents: 184 diff changeset	346 fmt->rewind_sample = rewind_sample_fmt_normal;
180 db3f0ee7aac0 Modified to more easily allow for different compression types. Ryan C. Gordon <icculus@icculus.org> parents: 149 diff changeset	347 return(1);
db3f0ee7aac0 Modified to more easily allow for different compression types. Ryan C. Gordon <icculus@icculus.org> parents: 149 diff changeset	348 } /* read_fmt_normal */
db3f0ee7aac0 Modified to more easily allow for different compression types. Ryan C. Gordon <icculus@icculus.org> parents: 149 diff changeset	349
db3f0ee7aac0 Modified to more easily allow for different compression types. Ryan C. Gordon <icculus@icculus.org> parents: 149 diff changeset	350
db3f0ee7aac0 Modified to more easily allow for different compression types. Ryan C. Gordon <icculus@icculus.org> parents: 149 diff changeset	351
db3f0ee7aac0 Modified to more easily allow for different compression types. Ryan C. Gordon <icculus@icculus.org> parents: 149 diff changeset	352
db3f0ee7aac0 Modified to more easily allow for different compression types. Ryan C. Gordon <icculus@icculus.org> parents: 149 diff changeset	353 /*****************************************************************************
db3f0ee7aac0 Modified to more easily allow for different compression types. Ryan C. Gordon <icculus@icculus.org> parents: 149 diff changeset	354 * Everything else... *
db3f0ee7aac0 Modified to more easily allow for different compression types. Ryan C. Gordon <icculus@icculus.org> parents: 149 diff changeset	355 *****************************************************************************/
db3f0ee7aac0 Modified to more easily allow for different compression types. Ryan C. Gordon <icculus@icculus.org> parents: 149 diff changeset	356
db3f0ee7aac0 Modified to more easily allow for different compression types. Ryan C. Gordon <icculus@icculus.org> parents: 149 diff changeset	357 static int AIFF_init(void)
db3f0ee7aac0 Modified to more easily allow for different compression types. Ryan C. Gordon <icculus@icculus.org> parents: 149 diff changeset	358 {
db3f0ee7aac0 Modified to more easily allow for different compression types. Ryan C. Gordon <icculus@icculus.org> parents: 149 diff changeset	359 return(1); /* always succeeds. */
db3f0ee7aac0 Modified to more easily allow for different compression types. Ryan C. Gordon <icculus@icculus.org> parents: 149 diff changeset	360 } /* AIFF_init */
db3f0ee7aac0 Modified to more easily allow for different compression types. Ryan C. Gordon <icculus@icculus.org> parents: 149 diff changeset	361
db3f0ee7aac0 Modified to more easily allow for different compression types. Ryan C. Gordon <icculus@icculus.org> parents: 149 diff changeset	362
db3f0ee7aac0 Modified to more easily allow for different compression types. Ryan C. Gordon <icculus@icculus.org> parents: 149 diff changeset	363 static void AIFF_quit(void)
db3f0ee7aac0 Modified to more easily allow for different compression types. Ryan C. Gordon <icculus@icculus.org> parents: 149 diff changeset	364 {
db3f0ee7aac0 Modified to more easily allow for different compression types. Ryan C. Gordon <icculus@icculus.org> parents: 149 diff changeset	365 /* it's a no-op. */
db3f0ee7aac0 Modified to more easily allow for different compression types. Ryan C. Gordon <icculus@icculus.org> parents: 149 diff changeset	366 } /* AIFF_quit */
db3f0ee7aac0 Modified to more easily allow for different compression types. Ryan C. Gordon <icculus@icculus.org> parents: 149 diff changeset	367
db3f0ee7aac0 Modified to more easily allow for different compression types. Ryan C. Gordon <icculus@icculus.org> parents: 149 diff changeset	368
db3f0ee7aac0 Modified to more easily allow for different compression types. Ryan C. Gordon <icculus@icculus.org> parents: 149 diff changeset	369 /*
db3f0ee7aac0 Modified to more easily allow for different compression types. Ryan C. Gordon <icculus@icculus.org> parents: 149 diff changeset	370 * Sample rate is encoded as an "80 bit IEEE Standard 754 floating point
db3f0ee7aac0 Modified to more easily allow for different compression types. Ryan C. Gordon <icculus@icculus.org> parents: 149 diff changeset	371 * number (Standard Apple Numeric Environment [SANE] data type Extended)".
db3f0ee7aac0 Modified to more easily allow for different compression types. Ryan C. Gordon <icculus@icculus.org> parents: 149 diff changeset	372 * Whose bright idea was that?
db3f0ee7aac0 Modified to more easily allow for different compression types. Ryan C. Gordon <icculus@icculus.org> parents: 149 diff changeset	373 *
db3f0ee7aac0 Modified to more easily allow for different compression types. Ryan C. Gordon <icculus@icculus.org> parents: 149 diff changeset	374 * This function was adapted from libsndfile, and while I do know a little
db3f0ee7aac0 Modified to more easily allow for different compression types. Ryan C. Gordon <icculus@icculus.org> parents: 149 diff changeset	375 * bit about the IEEE floating point standard I don't pretend to fully
db3f0ee7aac0 Modified to more easily allow for different compression types. Ryan C. Gordon <icculus@icculus.org> parents: 149 diff changeset	376 * understand this.
db3f0ee7aac0 Modified to more easily allow for different compression types. Ryan C. Gordon <icculus@icculus.org> parents: 149 diff changeset	377 */
db3f0ee7aac0 Modified to more easily allow for different compression types. Ryan C. Gordon <icculus@icculus.org> parents: 149 diff changeset	378 static Uint32 SANE_to_Uint32 (Uint8 *sanebuf)
db3f0ee7aac0 Modified to more easily allow for different compression types. Ryan C. Gordon <icculus@icculus.org> parents: 149 diff changeset	379 {
db3f0ee7aac0 Modified to more easily allow for different compression types. Ryan C. Gordon <icculus@icculus.org> parents: 149 diff changeset	380 /* Is the frequency outside of what we can represent with Uint32? */
db3f0ee7aac0 Modified to more easily allow for different compression types. Ryan C. Gordon <icculus@icculus.org> parents: 149 diff changeset	381 if ( (sanebuf[0] & 0x80)
db3f0ee7aac0 Modified to more easily allow for different compression types. Ryan C. Gordon <icculus@icculus.org> parents: 149 diff changeset	382 \|\| (sanebuf[0] <= 0x3F)
db3f0ee7aac0 Modified to more easily allow for different compression types. Ryan C. Gordon <icculus@icculus.org> parents: 149 diff changeset	383 \|\| (sanebuf[0] > 0x40)
db3f0ee7aac0 Modified to more easily allow for different compression types. Ryan C. Gordon <icculus@icculus.org> parents: 149 diff changeset	384 \|\| (sanebuf[0] == 0x40 && sanebuf[1] > 0x1C) )
db3f0ee7aac0 Modified to more easily allow for different compression types. Ryan C. Gordon <icculus@icculus.org> parents: 149 diff changeset	385 return 0;
db3f0ee7aac0 Modified to more easily allow for different compression types. Ryan C. Gordon <icculus@icculus.org> parents: 149 diff changeset	386
db3f0ee7aac0 Modified to more easily allow for different compression types. Ryan C. Gordon <icculus@icculus.org> parents: 149 diff changeset	387 return ((sanebuf[2] << 23) \| (sanebuf[3] << 15) \| (sanebuf[4] << 7)
db3f0ee7aac0 Modified to more easily allow for different compression types. Ryan C. Gordon <icculus@icculus.org> parents: 149 diff changeset	388 \| (sanebuf[5] >> 1)) >> (29 - sanebuf[1]);
db3f0ee7aac0 Modified to more easily allow for different compression types. Ryan C. Gordon <icculus@icculus.org> parents: 149 diff changeset	389 } /* SANE_to_Uint32 */
db3f0ee7aac0 Modified to more easily allow for different compression types. Ryan C. Gordon <icculus@icculus.org> parents: 149 diff changeset	390
db3f0ee7aac0 Modified to more easily allow for different compression types. Ryan C. Gordon <icculus@icculus.org> parents: 149 diff changeset	391
db3f0ee7aac0 Modified to more easily allow for different compression types. Ryan C. Gordon <icculus@icculus.org> parents: 149 diff changeset	392 static int find_chunk(SDL_RWops *rw, Uint32 id)
db3f0ee7aac0 Modified to more easily allow for different compression types. Ryan C. Gordon <icculus@icculus.org> parents: 149 diff changeset	393 {
db3f0ee7aac0 Modified to more easily allow for different compression types. Ryan C. Gordon <icculus@icculus.org> parents: 149 diff changeset	394 Sint32 siz = 0;
db3f0ee7aac0 Modified to more easily allow for different compression types. Ryan C. Gordon <icculus@icculus.org> parents: 149 diff changeset	395 Uint32 _id = 0;
db3f0ee7aac0 Modified to more easily allow for different compression types. Ryan C. Gordon <icculus@icculus.org> parents: 149 diff changeset	396
db3f0ee7aac0 Modified to more easily allow for different compression types. Ryan C. Gordon <icculus@icculus.org> parents: 149 diff changeset	397 while (1)
db3f0ee7aac0 Modified to more easily allow for different compression types. Ryan C. Gordon <icculus@icculus.org> parents: 149 diff changeset	398 {
db3f0ee7aac0 Modified to more easily allow for different compression types. Ryan C. Gordon <icculus@icculus.org> parents: 149 diff changeset	399 BAIL_IF_MACRO(SDL_RWread(rw, &_id, sizeof (_id), 1) != 1, NULL, 0);
db3f0ee7aac0 Modified to more easily allow for different compression types. Ryan C. Gordon <icculus@icculus.org> parents: 149 diff changeset	400 if (SDL_SwapLE32(_id) == id)
db3f0ee7aac0 Modified to more easily allow for different compression types. Ryan C. Gordon <icculus@icculus.org> parents: 149 diff changeset	401 return(1);
db3f0ee7aac0 Modified to more easily allow for different compression types. Ryan C. Gordon <icculus@icculus.org> parents: 149 diff changeset	402
db3f0ee7aac0 Modified to more easily allow for different compression types. Ryan C. Gordon <icculus@icculus.org> parents: 149 diff changeset	403 BAIL_IF_MACRO(SDL_RWread(rw, &siz, sizeof (siz), 1) != 1, NULL, 0);
db3f0ee7aac0 Modified to more easily allow for different compression types. Ryan C. Gordon <icculus@icculus.org> parents: 149 diff changeset	404 siz = SDL_SwapBE32(siz);
db3f0ee7aac0 Modified to more easily allow for different compression types. Ryan C. Gordon <icculus@icculus.org> parents: 149 diff changeset	405 assert(siz > 0);
db3f0ee7aac0 Modified to more easily allow for different compression types. Ryan C. Gordon <icculus@icculus.org> parents: 149 diff changeset	406 BAIL_IF_MACRO(SDL_RWseek(rw, siz, SEEK_CUR) == -1, NULL, 0);
db3f0ee7aac0 Modified to more easily allow for different compression types. Ryan C. Gordon <icculus@icculus.org> parents: 149 diff changeset	407 } /* while */
db3f0ee7aac0 Modified to more easily allow for different compression types. Ryan C. Gordon <icculus@icculus.org> parents: 149 diff changeset	408
db3f0ee7aac0 Modified to more easily allow for different compression types. Ryan C. Gordon <icculus@icculus.org> parents: 149 diff changeset	409 return(0); /* shouldn't hit this, but just in case... */
db3f0ee7aac0 Modified to more easily allow for different compression types. Ryan C. Gordon <icculus@icculus.org> parents: 149 diff changeset	410 } /* find_chunk */
db3f0ee7aac0 Modified to more easily allow for different compression types. Ryan C. Gordon <icculus@icculus.org> parents: 149 diff changeset	411
db3f0ee7aac0 Modified to more easily allow for different compression types. Ryan C. Gordon <icculus@icculus.org> parents: 149 diff changeset	412
db3f0ee7aac0 Modified to more easily allow for different compression types. Ryan C. Gordon <icculus@icculus.org> parents: 149 diff changeset	413 static int read_fmt(SDL_RWops rw, comm_t c, fmt_t *fmt)
db3f0ee7aac0 Modified to more easily allow for different compression types. Ryan C. Gordon <icculus@icculus.org> parents: 149 diff changeset	414 {
db3f0ee7aac0 Modified to more easily allow for different compression types. Ryan C. Gordon <icculus@icculus.org> parents: 149 diff changeset	415 fmt->type = c->compressionType;
db3f0ee7aac0 Modified to more easily allow for different compression types. Ryan C. Gordon <icculus@icculus.org> parents: 149 diff changeset	416
db3f0ee7aac0 Modified to more easily allow for different compression types. Ryan C. Gordon <icculus@icculus.org> parents: 149 diff changeset	417 /* if it's in this switch statement, we support the format. */
db3f0ee7aac0 Modified to more easily allow for different compression types. Ryan C. Gordon <icculus@icculus.org> parents: 149 diff changeset	418 switch (fmt->type)
db3f0ee7aac0 Modified to more easily allow for different compression types. Ryan C. Gordon <icculus@icculus.org> parents: 149 diff changeset	419 {
db3f0ee7aac0 Modified to more easily allow for different compression types. Ryan C. Gordon <icculus@icculus.org> parents: 149 diff changeset	420 case noneID:
db3f0ee7aac0 Modified to more easily allow for different compression types. Ryan C. Gordon <icculus@icculus.org> parents: 149 diff changeset	421 SNDDBG(("AIFF: Appears to be uncompressed audio.\n"));
db3f0ee7aac0 Modified to more easily allow for different compression types. Ryan C. Gordon <icculus@icculus.org> parents: 149 diff changeset	422 return(read_fmt_normal(rw, fmt));
db3f0ee7aac0 Modified to more easily allow for different compression types. Ryan C. Gordon <icculus@icculus.org> parents: 149 diff changeset	423
db3f0ee7aac0 Modified to more easily allow for different compression types. Ryan C. Gordon <icculus@icculus.org> parents: 149 diff changeset	424 /* add other types here. */
db3f0ee7aac0 Modified to more easily allow for different compression types. Ryan C. Gordon <icculus@icculus.org> parents: 149 diff changeset	425
db3f0ee7aac0 Modified to more easily allow for different compression types. Ryan C. Gordon <icculus@icculus.org> parents: 149 diff changeset	426 default:
db3f0ee7aac0 Modified to more easily allow for different compression types. Ryan C. Gordon <icculus@icculus.org> parents: 149 diff changeset	427 SNDDBG(("AIFF: Format %lu is unknown.\n",
db3f0ee7aac0 Modified to more easily allow for different compression types. Ryan C. Gordon <icculus@icculus.org> parents: 149 diff changeset	428 (unsigned int) fmt->type));
db3f0ee7aac0 Modified to more easily allow for different compression types. Ryan C. Gordon <icculus@icculus.org> parents: 149 diff changeset	429 Sound_SetError("AIFF: Unsupported format");
db3f0ee7aac0 Modified to more easily allow for different compression types. Ryan C. Gordon <icculus@icculus.org> parents: 149 diff changeset	430 return(0); /* not supported whatsoever. */
db3f0ee7aac0 Modified to more easily allow for different compression types. Ryan C. Gordon <icculus@icculus.org> parents: 149 diff changeset	431 } /* switch */
db3f0ee7aac0 Modified to more easily allow for different compression types. Ryan C. Gordon <icculus@icculus.org> parents: 149 diff changeset	432
db3f0ee7aac0 Modified to more easily allow for different compression types. Ryan C. Gordon <icculus@icculus.org> parents: 149 diff changeset	433 assert(0); /* shouldn't hit this point. */
db3f0ee7aac0 Modified to more easily allow for different compression types. Ryan C. Gordon <icculus@icculus.org> parents: 149 diff changeset	434 return(0);
db3f0ee7aac0 Modified to more easily allow for different compression types. Ryan C. Gordon <icculus@icculus.org> parents: 149 diff changeset	435 } /* read_fmt */
db3f0ee7aac0 Modified to more easily allow for different compression types. Ryan C. Gordon <icculus@icculus.org> parents: 149 diff changeset	436
db3f0ee7aac0 Modified to more easily allow for different compression types. Ryan C. Gordon <icculus@icculus.org> parents: 149 diff changeset	437
db3f0ee7aac0 Modified to more easily allow for different compression types. Ryan C. Gordon <icculus@icculus.org> parents: 149 diff changeset	438 static int AIFF_open(Sound_Sample sample, const char ext)
db3f0ee7aac0 Modified to more easily allow for different compression types. Ryan C. Gordon <icculus@icculus.org> parents: 149 diff changeset	439 {
db3f0ee7aac0 Modified to more easily allow for different compression types. Ryan C. Gordon <icculus@icculus.org> parents: 149 diff changeset	440 Sound_SampleInternal internal = (Sound_SampleInternal ) sample->opaque;
db3f0ee7aac0 Modified to more easily allow for different compression types. Ryan C. Gordon <icculus@icculus.org> parents: 149 diff changeset	441 SDL_RWops *rw = internal->rw;
db3f0ee7aac0 Modified to more easily allow for different compression types. Ryan C. Gordon <icculus@icculus.org> parents: 149 diff changeset	442 Uint32 chunk_id;
db3f0ee7aac0 Modified to more easily allow for different compression types. Ryan C. Gordon <icculus@icculus.org> parents: 149 diff changeset	443 int bytes_per_sample;
db3f0ee7aac0 Modified to more easily allow for different compression types. Ryan C. Gordon <icculus@icculus.org> parents: 149 diff changeset	444 long pos;
db3f0ee7aac0 Modified to more easily allow for different compression types. Ryan C. Gordon <icculus@icculus.org> parents: 149 diff changeset	445 comm_t c;
db3f0ee7aac0 Modified to more easily allow for different compression types. Ryan C. Gordon <icculus@icculus.org> parents: 149 diff changeset	446 ssnd_t s;
db3f0ee7aac0 Modified to more easily allow for different compression types. Ryan C. Gordon <icculus@icculus.org> parents: 149 diff changeset	447 aiff_t *a;
db3f0ee7aac0 Modified to more easily allow for different compression types. Ryan C. Gordon <icculus@icculus.org> parents: 149 diff changeset	448
db3f0ee7aac0 Modified to more easily allow for different compression types. Ryan C. Gordon <icculus@icculus.org> parents: 149 diff changeset	449 BAIL_IF_MACRO(SDL_ReadLE32(rw) != formID, "AIFF: Not a FORM file.", 0);
db3f0ee7aac0 Modified to more easily allow for different compression types. Ryan C. Gordon <icculus@icculus.org> parents: 149 diff changeset	450 SDL_ReadBE32(rw); /* throw the length away; we don't need it. */
db3f0ee7aac0 Modified to more easily allow for different compression types. Ryan C. Gordon <icculus@icculus.org> parents: 149 diff changeset	451
db3f0ee7aac0 Modified to more easily allow for different compression types. Ryan C. Gordon <icculus@icculus.org> parents: 149 diff changeset	452 chunk_id = SDL_ReadLE32(rw);
db3f0ee7aac0 Modified to more easily allow for different compression types. Ryan C. Gordon <icculus@icculus.org> parents: 149 diff changeset	453 BAIL_IF_MACRO(chunk_id != aiffID && chunk_id != aifcID,
db3f0ee7aac0 Modified to more easily allow for different compression types. Ryan C. Gordon <icculus@icculus.org> parents: 149 diff changeset	454 "AIFF: Not an AIFF or AIFC file.", 0);
db3f0ee7aac0 Modified to more easily allow for different compression types. Ryan C. Gordon <icculus@icculus.org> parents: 149 diff changeset	455
db3f0ee7aac0 Modified to more easily allow for different compression types. Ryan C. Gordon <icculus@icculus.org> parents: 149 diff changeset	456 /* Chunks may appear in any order, so we establish base camp here. */
db3f0ee7aac0 Modified to more easily allow for different compression types. Ryan C. Gordon <icculus@icculus.org> parents: 149 diff changeset	457 pos = SDL_RWtell(rw);
db3f0ee7aac0 Modified to more easily allow for different compression types. Ryan C. Gordon <icculus@icculus.org> parents: 149 diff changeset	458
db3f0ee7aac0 Modified to more easily allow for different compression types. Ryan C. Gordon <icculus@icculus.org> parents: 149 diff changeset	459 BAIL_IF_MACRO(!find_chunk(rw, commID), "AIFF: No common chunk.", 0);
db3f0ee7aac0 Modified to more easily allow for different compression types. Ryan C. Gordon <icculus@icculus.org> parents: 149 diff changeset	460 BAIL_IF_MACRO(!read_comm_chunk(rw, &c),
db3f0ee7aac0 Modified to more easily allow for different compression types. Ryan C. Gordon <icculus@icculus.org> parents: 149 diff changeset	461 "AIFF: Can't read common chunk.", 0);
db3f0ee7aac0 Modified to more easily allow for different compression types. Ryan C. Gordon <icculus@icculus.org> parents: 149 diff changeset	462
db3f0ee7aac0 Modified to more easily allow for different compression types. Ryan C. Gordon <icculus@icculus.org> parents: 149 diff changeset	463 sample->actual.channels = (Uint8) c.numChannels;
db3f0ee7aac0 Modified to more easily allow for different compression types. Ryan C. Gordon <icculus@icculus.org> parents: 149 diff changeset	464 sample->actual.rate = c.sampleRate;
db3f0ee7aac0 Modified to more easily allow for different compression types. Ryan C. Gordon <icculus@icculus.org> parents: 149 diff changeset	465
db3f0ee7aac0 Modified to more easily allow for different compression types. Ryan C. Gordon <icculus@icculus.org> parents: 149 diff changeset	466 if (c.sampleSize <= 8)
db3f0ee7aac0 Modified to more easily allow for different compression types. Ryan C. Gordon <icculus@icculus.org> parents: 149 diff changeset	467 {
db3f0ee7aac0 Modified to more easily allow for different compression types. Ryan C. Gordon <icculus@icculus.org> parents: 149 diff changeset	468 sample->actual.format = AUDIO_S8;
db3f0ee7aac0 Modified to more easily allow for different compression types. Ryan C. Gordon <icculus@icculus.org> parents: 149 diff changeset	469 bytes_per_sample = 1;
db3f0ee7aac0 Modified to more easily allow for different compression types. Ryan C. Gordon <icculus@icculus.org> parents: 149 diff changeset	470 } /* if */
db3f0ee7aac0 Modified to more easily allow for different compression types. Ryan C. Gordon <icculus@icculus.org> parents: 149 diff changeset	471 else if (c.sampleSize <= 16)
db3f0ee7aac0 Modified to more easily allow for different compression types. Ryan C. Gordon <icculus@icculus.org> parents: 149 diff changeset	472 {
db3f0ee7aac0 Modified to more easily allow for different compression types. Ryan C. Gordon <icculus@icculus.org> parents: 149 diff changeset	473 sample->actual.format = AUDIO_S16MSB;
db3f0ee7aac0 Modified to more easily allow for different compression types. Ryan C. Gordon <icculus@icculus.org> parents: 149 diff changeset	474 bytes_per_sample = 2;
db3f0ee7aac0 Modified to more easily allow for different compression types. Ryan C. Gordon <icculus@icculus.org> parents: 149 diff changeset	475 } /* if */
db3f0ee7aac0 Modified to more easily allow for different compression types. Ryan C. Gordon <icculus@icculus.org> parents: 149 diff changeset	476 else
db3f0ee7aac0 Modified to more easily allow for different compression types. Ryan C. Gordon <icculus@icculus.org> parents: 149 diff changeset	477 {
db3f0ee7aac0 Modified to more easily allow for different compression types. Ryan C. Gordon <icculus@icculus.org> parents: 149 diff changeset	478 BAIL_MACRO("AIFF: Unsupported sample size.", 0);
db3f0ee7aac0 Modified to more easily allow for different compression types. Ryan C. Gordon <icculus@icculus.org> parents: 149 diff changeset	479 } /* else */
db3f0ee7aac0 Modified to more easily allow for different compression types. Ryan C. Gordon <icculus@icculus.org> parents: 149 diff changeset	480
db3f0ee7aac0 Modified to more easily allow for different compression types. Ryan C. Gordon <icculus@icculus.org> parents: 149 diff changeset	481 BAIL_IF_MACRO(c.sampleRate == 0, "AIFF: Unsupported sample rate.", 0);
db3f0ee7aac0 Modified to more easily allow for different compression types. Ryan C. Gordon <icculus@icculus.org> parents: 149 diff changeset	482
db3f0ee7aac0 Modified to more easily allow for different compression types. Ryan C. Gordon <icculus@icculus.org> parents: 149 diff changeset	483 a = (aiff_t *) malloc(sizeof(aiff_t));
db3f0ee7aac0 Modified to more easily allow for different compression types. Ryan C. Gordon <icculus@icculus.org> parents: 149 diff changeset	484 BAIL_IF_MACRO(a == NULL, ERR_OUT_OF_MEMORY, 0);
db3f0ee7aac0 Modified to more easily allow for different compression types. Ryan C. Gordon <icculus@icculus.org> parents: 149 diff changeset	485
db3f0ee7aac0 Modified to more easily allow for different compression types. Ryan C. Gordon <icculus@icculus.org> parents: 149 diff changeset	486 if (!read_fmt(rw, &c, &(a->fmt)))
db3f0ee7aac0 Modified to more easily allow for different compression types. Ryan C. Gordon <icculus@icculus.org> parents: 149 diff changeset	487 {
db3f0ee7aac0 Modified to more easily allow for different compression types. Ryan C. Gordon <icculus@icculus.org> parents: 149 diff changeset	488 free(a);
db3f0ee7aac0 Modified to more easily allow for different compression types. Ryan C. Gordon <icculus@icculus.org> parents: 149 diff changeset	489 return(0);
db3f0ee7aac0 Modified to more easily allow for different compression types. Ryan C. Gordon <icculus@icculus.org> parents: 149 diff changeset	490 } /* if */
db3f0ee7aac0 Modified to more easily allow for different compression types. Ryan C. Gordon <icculus@icculus.org> parents: 149 diff changeset	491
db3f0ee7aac0 Modified to more easily allow for different compression types. Ryan C. Gordon <icculus@icculus.org> parents: 149 diff changeset	492 SDL_RWseek(rw, pos, SEEK_SET); /* if the seek fails, let it go... */
db3f0ee7aac0 Modified to more easily allow for different compression types. Ryan C. Gordon <icculus@icculus.org> parents: 149 diff changeset	493
db3f0ee7aac0 Modified to more easily allow for different compression types. Ryan C. Gordon <icculus@icculus.org> parents: 149 diff changeset	494 if (!find_chunk(rw, ssndID))
db3f0ee7aac0 Modified to more easily allow for different compression types. Ryan C. Gordon <icculus@icculus.org> parents: 149 diff changeset	495 {
db3f0ee7aac0 Modified to more easily allow for different compression types. Ryan C. Gordon <icculus@icculus.org> parents: 149 diff changeset	496 Sound_SetError("AIFF: No sound data chunk.");
db3f0ee7aac0 Modified to more easily allow for different compression types. Ryan C. Gordon <icculus@icculus.org> parents: 149 diff changeset	497 free(a);
db3f0ee7aac0 Modified to more easily allow for different compression types. Ryan C. Gordon <icculus@icculus.org> parents: 149 diff changeset	498 return(0);
db3f0ee7aac0 Modified to more easily allow for different compression types. Ryan C. Gordon <icculus@icculus.org> parents: 149 diff changeset	499 } /* if */
db3f0ee7aac0 Modified to more easily allow for different compression types. Ryan C. Gordon <icculus@icculus.org> parents: 149 diff changeset	500
db3f0ee7aac0 Modified to more easily allow for different compression types. Ryan C. Gordon <icculus@icculus.org> parents: 149 diff changeset	501 if (!read_ssnd_chunk(rw, &s))
db3f0ee7aac0 Modified to more easily allow for different compression types. Ryan C. Gordon <icculus@icculus.org> parents: 149 diff changeset	502 {
db3f0ee7aac0 Modified to more easily allow for different compression types. Ryan C. Gordon <icculus@icculus.org> parents: 149 diff changeset	503 Sound_SetError("AIFF: Can't read sound data chunk.");
db3f0ee7aac0 Modified to more easily allow for different compression types. Ryan C. Gordon <icculus@icculus.org> parents: 149 diff changeset	504 free(a);
db3f0ee7aac0 Modified to more easily allow for different compression types. Ryan C. Gordon <icculus@icculus.org> parents: 149 diff changeset	505 return(0);
db3f0ee7aac0 Modified to more easily allow for different compression types. Ryan C. Gordon <icculus@icculus.org> parents: 149 diff changeset	506 } /* if */
db3f0ee7aac0 Modified to more easily allow for different compression types. Ryan C. Gordon <icculus@icculus.org> parents: 149 diff changeset	507
221 c9772a9f5271 Initial implementation or stubs for rewind method. Other cleanups. Ryan C. Gordon <icculus@icculus.org> parents: 184 diff changeset	508 a->fmt.total_bytes = a->bytesLeft = bytes_per_sample * c.numSampleFrames;
c9772a9f5271 Initial implementation or stubs for rewind method. Other cleanups. Ryan C. Gordon <icculus@icculus.org> parents: 184 diff changeset	509 a->fmt.data_starting_offset = SDL_RWtell(rw);
180 db3f0ee7aac0 Modified to more easily allow for different compression types. Ryan C. Gordon <icculus@icculus.org> parents: 149 diff changeset	510 internal->decoder_private = (void *) a;
db3f0ee7aac0 Modified to more easily allow for different compression types. Ryan C. Gordon <icculus@icculus.org> parents: 149 diff changeset	511
db3f0ee7aac0 Modified to more easily allow for different compression types. Ryan C. Gordon <icculus@icculus.org> parents: 149 diff changeset	512 sample->flags = SOUND_SAMPLEFLAG_NONE;
db3f0ee7aac0 Modified to more easily allow for different compression types. Ryan C. Gordon <icculus@icculus.org> parents: 149 diff changeset	513
db3f0ee7aac0 Modified to more easily allow for different compression types. Ryan C. Gordon <icculus@icculus.org> parents: 149 diff changeset	514 SNDDBG(("AIFF: Accepting data stream.\n"));
db3f0ee7aac0 Modified to more easily allow for different compression types. Ryan C. Gordon <icculus@icculus.org> parents: 149 diff changeset	515 return(1); /* we'll handle this data. */
db3f0ee7aac0 Modified to more easily allow for different compression types. Ryan C. Gordon <icculus@icculus.org> parents: 149 diff changeset	516 } /* AIFF_open */
db3f0ee7aac0 Modified to more easily allow for different compression types. Ryan C. Gordon <icculus@icculus.org> parents: 149 diff changeset	517
db3f0ee7aac0 Modified to more easily allow for different compression types. Ryan C. Gordon <icculus@icculus.org> parents: 149 diff changeset	518
db3f0ee7aac0 Modified to more easily allow for different compression types. Ryan C. Gordon <icculus@icculus.org> parents: 149 diff changeset	519 static void AIFF_close(Sound_Sample *sample)
db3f0ee7aac0 Modified to more easily allow for different compression types. Ryan C. Gordon <icculus@icculus.org> parents: 149 diff changeset	520 {
db3f0ee7aac0 Modified to more easily allow for different compression types. Ryan C. Gordon <icculus@icculus.org> parents: 149 diff changeset	521 Sound_SampleInternal internal = (Sound_SampleInternal ) sample->opaque;
db3f0ee7aac0 Modified to more easily allow for different compression types. Ryan C. Gordon <icculus@icculus.org> parents: 149 diff changeset	522 aiff_t a = (aiff_t ) internal->decoder_private;
db3f0ee7aac0 Modified to more easily allow for different compression types. Ryan C. Gordon <icculus@icculus.org> parents: 149 diff changeset	523 a->fmt.free(&(a->fmt));
db3f0ee7aac0 Modified to more easily allow for different compression types. Ryan C. Gordon <icculus@icculus.org> parents: 149 diff changeset	524 free(a);
306 c97be6e1bd27 Added framework for Sound_Seek() support. Ryan C. Gordon <icculus@icculus.org> parents: 221 diff changeset	525 } /* AIFF_close */
180 db3f0ee7aac0 Modified to more easily allow for different compression types. Ryan C. Gordon <icculus@icculus.org> parents: 149 diff changeset	526
db3f0ee7aac0 Modified to more easily allow for different compression types. Ryan C. Gordon <icculus@icculus.org> parents: 149 diff changeset	527
db3f0ee7aac0 Modified to more easily allow for different compression types. Ryan C. Gordon <icculus@icculus.org> parents: 149 diff changeset	528 static Uint32 AIFF_read(Sound_Sample *sample)
db3f0ee7aac0 Modified to more easily allow for different compression types. Ryan C. Gordon <icculus@icculus.org> parents: 149 diff changeset	529 {
db3f0ee7aac0 Modified to more easily allow for different compression types. Ryan C. Gordon <icculus@icculus.org> parents: 149 diff changeset	530 Sound_SampleInternal internal = (Sound_SampleInternal ) sample->opaque;
db3f0ee7aac0 Modified to more easily allow for different compression types. Ryan C. Gordon <icculus@icculus.org> parents: 149 diff changeset	531 aiff_t a = (aiff_t ) internal->decoder_private;
db3f0ee7aac0 Modified to more easily allow for different compression types. Ryan C. Gordon <icculus@icculus.org> parents: 149 diff changeset	532 return(a->fmt.read_sample(sample));
34 938ef560c7bf Initial add. Thanks, Torbj�rn! Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	533 } /* AIFF_read */
938ef560c7bf Initial add. Thanks, Torbj�rn! Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	534
221 c9772a9f5271 Initial implementation or stubs for rewind method. Other cleanups. Ryan C. Gordon <icculus@icculus.org> parents: 184 diff changeset	535
c9772a9f5271 Initial implementation or stubs for rewind method. Other cleanups. Ryan C. Gordon <icculus@icculus.org> parents: 184 diff changeset	536 static int AIFF_rewind(Sound_Sample *sample)
c9772a9f5271 Initial implementation or stubs for rewind method. Other cleanups. Ryan C. Gordon <icculus@icculus.org> parents: 184 diff changeset	537 {
c9772a9f5271 Initial implementation or stubs for rewind method. Other cleanups. Ryan C. Gordon <icculus@icculus.org> parents: 184 diff changeset	538 Sound_SampleInternal internal = (Sound_SampleInternal ) sample->opaque;
c9772a9f5271 Initial implementation or stubs for rewind method. Other cleanups. Ryan C. Gordon <icculus@icculus.org> parents: 184 diff changeset	539 aiff_t a = (aiff_t ) internal->decoder_private;
c9772a9f5271 Initial implementation or stubs for rewind method. Other cleanups. Ryan C. Gordon <icculus@icculus.org> parents: 184 diff changeset	540 fmt_t *fmt = &a->fmt;
c9772a9f5271 Initial implementation or stubs for rewind method. Other cleanups. Ryan C. Gordon <icculus@icculus.org> parents: 184 diff changeset	541 int rc = SDL_RWseek(internal->rw, fmt->data_starting_offset, SEEK_SET);
c9772a9f5271 Initial implementation or stubs for rewind method. Other cleanups. Ryan C. Gordon <icculus@icculus.org> parents: 184 diff changeset	542 BAIL_IF_MACRO(rc != fmt->data_starting_offset, ERR_IO_ERROR, 0);
c9772a9f5271 Initial implementation or stubs for rewind method. Other cleanups. Ryan C. Gordon <icculus@icculus.org> parents: 184 diff changeset	543 a->bytesLeft = fmt->total_bytes;
c9772a9f5271 Initial implementation or stubs for rewind method. Other cleanups. Ryan C. Gordon <icculus@icculus.org> parents: 184 diff changeset	544 return(fmt->rewind_sample(sample));
c9772a9f5271 Initial implementation or stubs for rewind method. Other cleanups. Ryan C. Gordon <icculus@icculus.org> parents: 184 diff changeset	545 } /* AIFF_rewind */
c9772a9f5271 Initial implementation or stubs for rewind method. Other cleanups. Ryan C. Gordon <icculus@icculus.org> parents: 184 diff changeset	546
306 c97be6e1bd27 Added framework for Sound_Seek() support. Ryan C. Gordon <icculus@icculus.org> parents: 221 diff changeset	547
c97be6e1bd27 Added framework for Sound_Seek() support. Ryan C. Gordon <icculus@icculus.org> parents: 221 diff changeset	548 static int AIFF_seek(Sound_Sample *sample, Uint32 ms)
c97be6e1bd27 Added framework for Sound_Seek() support. Ryan C. Gordon <icculus@icculus.org> parents: 221 diff changeset	549 {
c97be6e1bd27 Added framework for Sound_Seek() support. Ryan C. Gordon <icculus@icculus.org> parents: 221 diff changeset	550 BAIL_MACRO("!!! FIXME: Not implemented", 0);
c97be6e1bd27 Added framework for Sound_Seek() support. Ryan C. Gordon <icculus@icculus.org> parents: 221 diff changeset	551 } /* AIFF_seek */
c97be6e1bd27 Added framework for Sound_Seek() support. Ryan C. Gordon <icculus@icculus.org> parents: 221 diff changeset	552
64 40006625142a Changes in preparation of autoconf support. Ryan C. Gordon <icculus@icculus.org> parents: 62 diff changeset	553 #endif /* SOUND_SUPPORTS_AIFF */
40006625142a Changes in preparation of autoconf support. Ryan C. Gordon <icculus@icculus.org> parents: 62 diff changeset	554
180 db3f0ee7aac0 Modified to more easily allow for different compression types. Ryan C. Gordon <icculus@icculus.org> parents: 149 diff changeset	555 /* end of aiff.c ... */
34 938ef560c7bf Initial add. Thanks, Torbj�rn! Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	556

Mercurial > SDL_sound_CoreAudio

annotate decoders/aiff.c @ 306:c97be6e1bd27