SDL_sound_CoreAudio: decoders/aiff.c annotate

annotate decoders/aiff.c @ 474:c66080364dff

Most decoders now report total sample play time, now. Technically, this breaks binary compatibility with the 1.0 branch, since it extends the Sound_Sample struct, but most (all?) programs are just passing pointers allocated by SDL_sound around, and might be okay. Source-level compatibility is not broken...yet! :) --ryan. -------- Original Message -------- Subject: SDL_sound patch: Finding total length of time of sound file. Date: Sun, 26 Jan 2003 09:31:17 -0800 (PST) Hi Ryan, I am working with Eric Wing and helping him modify SDL_sound. AS part of our efforts in improving and enhancing SDL_sound, we like to submit this patch. We modified the codecs to find the total time of a sound file. Below is the explanation of the patch. The patch is appended as an attachment to this email. * MOTIVATION: We needed the ability to get the total play time of a sample (And we noticed that we're not the only ones). Since SDL_sound blocks direct access to the specific decoders, there is no way for a user to know this information short of decoding the whole thing. Because of this, we believe this will be a useful addition, even though the accuracy may not be perfect (subject to each decoder) or the information may not always be available. * CONTRIBUTORS: Wesley Leong (modified the majority of the codecs and verified the results) Eric Wing (showed everyone how to do modify codec, modified mikmod) Wang Lam (modified a handful of codecs, researched into specs and int overflow) Ahilan Anantha (modified a few codecs and helped with integer math) * GENERAL ISSUES: We chose the value to be milliseconds as an Sint32. Milliseconds because that's what Sound_Seek takes as a parameter and -1 to allow for instances/codecs where the value could not be determined. We are not sure if this is the final convention you want, so we are willing to work with you on this. We also expect the total_time field to be set on open and never again modified by SDL_sound. Users may access it directly much like the sample buffer and buffer_size. We thought about recomputing the time on DecodeAll, but since users may seek or decode small chunks first, not all the data may be there. So this is better done by the user. This may be good information to document. Currently, all the main codecs are implemented except for QuickTime.

author	Ryan C. Gordon <icculus@icculus.org>
date	Sat, 08 May 2004 08:19:50 +0000
parents	9d0b5ec9cc26
children	3e705c9180e5

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
106 40de367eb59e Changing my include structure to do this right. Ryan C. Gordon <icculus@icculus.org> parents: 104 diff changeset	54 #include "SDL_sound.h"
40de367eb59e Changing my include structure to do this right. Ryan C. Gordon <icculus@icculus.org> parents: 104 diff changeset	55
40de367eb59e Changing my include structure to do this right. Ryan C. Gordon <icculus@icculus.org> parents: 104 diff changeset	56 #define __SDL_SOUND_INTERNAL__
40de367eb59e Changing my include structure to do this right. Ryan C. Gordon <icculus@icculus.org> parents: 104 diff changeset	57 #include "SDL_sound_internal.h"
40de367eb59e Changing my include structure to do this right. Ryan C. Gordon <icculus@icculus.org> parents: 104 diff changeset	58
180 db3f0ee7aac0 Modified to more easily allow for different compression types. Ryan C. Gordon <icculus@icculus.org> parents: 149 diff changeset	59 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	60
db3f0ee7aac0 Modified to more easily allow for different compression types. Ryan C. Gordon <icculus@icculus.org> parents: 149 diff changeset	61
47 ea58bc3b15d7 Added init() and quit() methods. Ryan C. Gordon <icculus@icculus.org> parents: 41 diff changeset	62 static int AIFF_init(void);
ea58bc3b15d7 Added init() and quit() methods. Ryan C. Gordon <icculus@icculus.org> parents: 41 diff changeset	63 static void AIFF_quit(void);
34 938ef560c7bf Initial add. Thanks, Torbj�rn! Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	64 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	65 static void AIFF_close(Sound_Sample *sample);
938ef560c7bf Initial add. Thanks, Torbj�rn! Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	66 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	67 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	68 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	69
149 1df5c106504e Decoders can now list multiple file extensions. Ryan C. Gordon <icculus@icculus.org> parents: 116 diff changeset	70 static const char *extensions_aiff[] = { "AIFF", NULL };
34 938ef560c7bf Initial add. Thanks, Torbj�rn! Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	71 const Sound_DecoderFunctions __Sound_DecoderFunctions_AIFF =
938ef560c7bf Initial add. Thanks, Torbj�rn! Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	72 {
938ef560c7bf Initial add. Thanks, Torbj�rn! Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	73 {
149 1df5c106504e Decoders can now list multiple file extensions. Ryan C. Gordon <icculus@icculus.org> parents: 116 diff changeset	74 extensions_aiff,
34 938ef560c7bf Initial add. Thanks, Torbj�rn! Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	75 "Audio Interchange File Format",
938ef560c7bf Initial add. Thanks, Torbj�rn! Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	76 "Torbj�rn Andersson <d91tan@Update.UU.SE>",
938ef560c7bf Initial add. Thanks, Torbj�rn! Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	77 "http://www.icculus.org/SDL_sound/"
938ef560c7bf Initial add. Thanks, Torbj�rn! Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	78 },
938ef560c7bf Initial add. Thanks, Torbj�rn! Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	79
221 c9772a9f5271 Initial implementation or stubs for rewind method. Other cleanups. Ryan C. Gordon <icculus@icculus.org> parents: 184 diff changeset	80 AIFF_init, /* init() method */
c9772a9f5271 Initial implementation or stubs for rewind method. Other cleanups. Ryan C. Gordon <icculus@icculus.org> parents: 184 diff changeset	81 AIFF_quit, /* quit() method */
c9772a9f5271 Initial implementation or stubs for rewind method. Other cleanups. Ryan C. Gordon <icculus@icculus.org> parents: 184 diff changeset	82 AIFF_open, /* open() method */
c9772a9f5271 Initial implementation or stubs for rewind method. Other cleanups. Ryan C. Gordon <icculus@icculus.org> parents: 184 diff changeset	83 AIFF_close, /* close() method */
c9772a9f5271 Initial implementation or stubs for rewind method. Other cleanups. Ryan C. Gordon <icculus@icculus.org> parents: 184 diff changeset	84 AIFF_read, /* read() method */
306 c97be6e1bd27 Added framework for Sound_Seek() support. Ryan C. Gordon <icculus@icculus.org> parents: 221 diff changeset	85 AIFF_rewind, /* rewind() method */
c97be6e1bd27 Added framework for Sound_Seek() support. Ryan C. Gordon <icculus@icculus.org> parents: 221 diff changeset	86 AIFF_seek /* seek() method */
34 938ef560c7bf Initial add. Thanks, Torbj�rn! Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	87 };
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
180 db3f0ee7aac0 Modified to more easily allow for different compression types. Ryan C. Gordon <icculus@icculus.org> parents: 149 diff changeset	90 /*****************************************************************************
db3f0ee7aac0 Modified to more easily allow for different compression types. Ryan C. Gordon <icculus@icculus.org> parents: 149 diff changeset	91 * 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	92 *****************************************************************************/
db3f0ee7aac0 Modified to more easily allow for different compression types. Ryan C. Gordon <icculus@icculus.org> parents: 149 diff changeset	93 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	94 {
db3f0ee7aac0 Modified to more easily allow for different compression types. Ryan C. Gordon <icculus@icculus.org> parents: 149 diff changeset	95 Uint32 type;
221 c9772a9f5271 Initial implementation or stubs for rewind method. Other cleanups. Ryan C. Gordon <icculus@icculus.org> parents: 184 diff changeset	96
c9772a9f5271 Initial implementation or stubs for rewind method. Other cleanups. Ryan C. Gordon <icculus@icculus.org> parents: 184 diff changeset	97 Uint32 total_bytes;
c9772a9f5271 Initial implementation or stubs for rewind method. Other cleanups. Ryan C. Gordon <icculus@icculus.org> parents: 184 diff changeset	98 Uint32 data_starting_offset;
c9772a9f5271 Initial implementation or stubs for rewind method. Other cleanups. Ryan C. Gordon <icculus@icculus.org> parents: 184 diff changeset	99
180 db3f0ee7aac0 Modified to more easily allow for different compression types. Ryan C. Gordon <icculus@icculus.org> parents: 149 diff changeset	100 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	101 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	102 int (rewind_sample)(Sound_Sample sample);
332 8ba541e81c1e seek method implementation. Ryan C. Gordon <icculus@icculus.org> parents: 306 diff changeset	103 int (seek_sample)(Sound_Sample sample, Uint32 ms);
221 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 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	283 return(0);
938ef560c7bf Initial add. Thanks, Torbj�rn! Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	284
938ef560c7bf Initial add. Thanks, Torbj�rn! Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	285 return(1);
938ef560c7bf Initial add. Thanks, Torbj�rn! Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	286 } /* read_ssnd_chunk */
938ef560c7bf Initial add. Thanks, Torbj�rn! Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	287
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
180 db3f0ee7aac0 Modified to more easily allow for different compression types. Ryan C. Gordon <icculus@icculus.org> parents: 149 diff changeset	290 /*****************************************************************************
db3f0ee7aac0 Modified to more easily allow for different compression types. Ryan C. Gordon <icculus@icculus.org> parents: 149 diff changeset	291 * Normal, uncompressed aiff handler... *
db3f0ee7aac0 Modified to more easily allow for different compression types. Ryan C. Gordon <icculus@icculus.org> parents: 149 diff changeset	292 *****************************************************************************/
34 938ef560c7bf Initial add. Thanks, Torbj�rn! Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	293
180 db3f0ee7aac0 Modified to more easily allow for different compression types. Ryan C. Gordon <icculus@icculus.org> parents: 149 diff changeset	294 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	295 {
938ef560c7bf Initial add. Thanks, Torbj�rn! Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	296 Uint32 retval;
938ef560c7bf Initial add. Thanks, Torbj�rn! Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	297 Sound_SampleInternal internal = (Sound_SampleInternal ) sample->opaque;
938ef560c7bf Initial add. Thanks, Torbj�rn! Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	298 aiff_t a = (aiff_t ) internal->decoder_private;
938ef560c7bf Initial add. Thanks, Torbj�rn! Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	299 Uint32 max = (internal->buffer_size < (Uint32) a->bytesLeft) ?
938ef560c7bf Initial add. Thanks, Torbj�rn! Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	300 internal->buffer_size : (Uint32) a->bytesLeft;
938ef560c7bf Initial add. Thanks, Torbj�rn! Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	301
938ef560c7bf Initial add. Thanks, Torbj�rn! Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	302 assert(max > 0);
938ef560c7bf Initial add. Thanks, Torbj�rn! Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	303
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 * 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	306 * directly into the internal buffer...
938ef560c7bf Initial add. Thanks, Torbj�rn! Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	307 */
938ef560c7bf Initial add. Thanks, Torbj�rn! Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	308 retval = SDL_RWread(internal->rw, internal->buffer, 1, max);
938ef560c7bf Initial add. Thanks, Torbj�rn! Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	309
938ef560c7bf Initial add. Thanks, Torbj�rn! Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	310 a->bytesLeft -= retval;
938ef560c7bf Initial add. Thanks, Torbj�rn! Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	311
938ef560c7bf Initial add. Thanks, Torbj�rn! Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	312 /* Make sure the read went smoothly... */
938ef560c7bf Initial add. Thanks, Torbj�rn! Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	313 if ((retval == 0) \|\| (a->bytesLeft == 0))
938ef560c7bf Initial add. Thanks, Torbj�rn! Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	314 sample->flags \|= SOUND_SAMPLEFLAG_EOF;
938ef560c7bf Initial add. Thanks, Torbj�rn! Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	315
938ef560c7bf Initial add. Thanks, Torbj�rn! Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	316 else if (retval == -1)
938ef560c7bf Initial add. Thanks, Torbj�rn! Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	317 sample->flags \|= SOUND_SAMPLEFLAG_ERROR;
938ef560c7bf Initial add. Thanks, Torbj�rn! Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	318
938ef560c7bf Initial add. Thanks, Torbj�rn! Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	319 /* (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	320 else if (retval < internal->buffer_size)
938ef560c7bf Initial add. Thanks, Torbj�rn! Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	321 sample->flags \|= SOUND_SAMPLEFLAG_EAGAIN;
938ef560c7bf Initial add. Thanks, Torbj�rn! Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	322
938ef560c7bf Initial add. Thanks, Torbj�rn! Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	323 return(retval);
180 db3f0ee7aac0 Modified to more easily allow for different compression types. Ryan C. Gordon <icculus@icculus.org> parents: 149 diff changeset	324 } /* read_sample_fmt_normal */
db3f0ee7aac0 Modified to more easily allow for different compression types. Ryan C. Gordon <icculus@icculus.org> parents: 149 diff changeset	325
db3f0ee7aac0 Modified to more easily allow for different compression types. Ryan C. Gordon <icculus@icculus.org> parents: 149 diff changeset	326
221 c9772a9f5271 Initial implementation or stubs for rewind method. Other cleanups. Ryan C. Gordon <icculus@icculus.org> parents: 184 diff changeset	327 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	328 {
c9772a9f5271 Initial implementation or stubs for rewind method. Other cleanups. Ryan C. Gordon <icculus@icculus.org> parents: 184 diff changeset	329 /* no-op. */
c9772a9f5271 Initial implementation or stubs for rewind method. Other cleanups. Ryan C. Gordon <icculus@icculus.org> parents: 184 diff changeset	330 return(1);
c9772a9f5271 Initial implementation or stubs for rewind method. Other cleanups. Ryan C. Gordon <icculus@icculus.org> parents: 184 diff changeset	331 } /* rewind_sample_fmt_normal */
c9772a9f5271 Initial implementation or stubs for rewind method. Other cleanups. Ryan C. Gordon <icculus@icculus.org> parents: 184 diff changeset	332
c9772a9f5271 Initial implementation or stubs for rewind method. Other cleanups. Ryan C. Gordon <icculus@icculus.org> parents: 184 diff changeset	333
332 8ba541e81c1e seek method implementation. Ryan C. Gordon <icculus@icculus.org> parents: 306 diff changeset	334 static int seek_sample_fmt_normal(Sound_Sample *sample, Uint32 ms)
8ba541e81c1e seek method implementation. Ryan C. Gordon <icculus@icculus.org> parents: 306 diff changeset	335 {
8ba541e81c1e seek method implementation. Ryan C. Gordon <icculus@icculus.org> parents: 306 diff changeset	336 Sound_SampleInternal internal = (Sound_SampleInternal ) sample->opaque;
8ba541e81c1e seek method implementation. Ryan C. Gordon <icculus@icculus.org> parents: 306 diff changeset	337 aiff_t a = (aiff_t ) internal->decoder_private;
8ba541e81c1e seek method implementation. Ryan C. Gordon <icculus@icculus.org> parents: 306 diff changeset	338 fmt_t *fmt = &a->fmt;
8ba541e81c1e seek method implementation. Ryan C. Gordon <icculus@icculus.org> parents: 306 diff changeset	339 int offset = __Sound_convertMsToBytePos(&sample->actual, ms);
8ba541e81c1e seek method implementation. Ryan C. Gordon <icculus@icculus.org> parents: 306 diff changeset	340 int pos = (int) (fmt->data_starting_offset + offset);
8ba541e81c1e seek method implementation. Ryan C. Gordon <icculus@icculus.org> parents: 306 diff changeset	341 int rc = SDL_RWseek(internal->rw, pos, SEEK_SET);
8ba541e81c1e seek method implementation. Ryan C. Gordon <icculus@icculus.org> parents: 306 diff changeset	342 BAIL_IF_MACRO(rc != pos, ERR_IO_ERROR, 0);
8ba541e81c1e seek method implementation. Ryan C. Gordon <icculus@icculus.org> parents: 306 diff changeset	343 a->bytesLeft = fmt->total_bytes - offset;
8ba541e81c1e seek method implementation. Ryan C. Gordon <icculus@icculus.org> parents: 306 diff changeset	344 return(1); /* success. */
8ba541e81c1e seek method implementation. Ryan C. Gordon <icculus@icculus.org> parents: 306 diff changeset	345 } /* seek_sample_fmt_normal */
8ba541e81c1e seek method implementation. Ryan C. Gordon <icculus@icculus.org> parents: 306 diff changeset	346
8ba541e81c1e seek method implementation. Ryan C. Gordon <icculus@icculus.org> parents: 306 diff changeset	347
180 db3f0ee7aac0 Modified to more easily allow for different compression types. Ryan C. Gordon <icculus@icculus.org> parents: 149 diff changeset	348 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	349 {
db3f0ee7aac0 Modified to more easily allow for different compression types. Ryan C. Gordon <icculus@icculus.org> parents: 149 diff changeset	350 /* 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	351 } /* free_fmt_normal */
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 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	355 {
db3f0ee7aac0 Modified to more easily allow for different compression types. Ryan C. Gordon <icculus@icculus.org> parents: 149 diff changeset	356 /* (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	357 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	358 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	359 fmt->rewind_sample = rewind_sample_fmt_normal;
332 8ba541e81c1e seek method implementation. Ryan C. Gordon <icculus@icculus.org> parents: 306 diff changeset	360 fmt->seek_sample = seek_sample_fmt_normal;
180 db3f0ee7aac0 Modified to more easily allow for different compression types. Ryan C. Gordon <icculus@icculus.org> parents: 149 diff changeset	361 return(1);
db3f0ee7aac0 Modified to more easily allow for different compression types. Ryan C. Gordon <icculus@icculus.org> parents: 149 diff changeset	362 } /* read_fmt_normal */
db3f0ee7aac0 Modified to more easily allow for different compression types. Ryan C. Gordon <icculus@icculus.org> parents: 149 diff changeset	363
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
db3f0ee7aac0 Modified to more easily allow for different compression types. Ryan C. Gordon <icculus@icculus.org> parents: 149 diff changeset	366
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 * Everything else... *
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
db3f0ee7aac0 Modified to more easily allow for different compression types. Ryan C. Gordon <icculus@icculus.org> parents: 149 diff changeset	371 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	372 {
db3f0ee7aac0 Modified to more easily allow for different compression types. Ryan C. Gordon <icculus@icculus.org> parents: 149 diff changeset	373 return(1); /* always succeeds. */
db3f0ee7aac0 Modified to more easily allow for different compression types. Ryan C. Gordon <icculus@icculus.org> parents: 149 diff changeset	374 } /* AIFF_init */
db3f0ee7aac0 Modified to more easily allow for different compression types. Ryan C. Gordon <icculus@icculus.org> parents: 149 diff changeset	375
db3f0ee7aac0 Modified to more easily allow for different compression types. Ryan C. Gordon <icculus@icculus.org> parents: 149 diff changeset	376
db3f0ee7aac0 Modified to more easily allow for different compression types. Ryan C. Gordon <icculus@icculus.org> parents: 149 diff changeset	377 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	378 {
db3f0ee7aac0 Modified to more easily allow for different compression types. Ryan C. Gordon <icculus@icculus.org> parents: 149 diff changeset	379 /* 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	380 } /* AIFF_quit */
db3f0ee7aac0 Modified to more easily allow for different compression types. Ryan C. Gordon <icculus@icculus.org> parents: 149 diff changeset	381
db3f0ee7aac0 Modified to more easily allow for different compression types. Ryan C. Gordon <icculus@icculus.org> parents: 149 diff changeset	382
db3f0ee7aac0 Modified to more easily allow for different compression types. Ryan C. Gordon <icculus@icculus.org> parents: 149 diff changeset	383 /*
db3f0ee7aac0 Modified to more easily allow for different compression types. Ryan C. Gordon <icculus@icculus.org> parents: 149 diff changeset	384 * 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	385 * 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	386 * 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	387 *
db3f0ee7aac0 Modified to more easily allow for different compression types. Ryan C. Gordon <icculus@icculus.org> parents: 149 diff changeset	388 * 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	389 * 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	390 * understand this.
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 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	393 {
db3f0ee7aac0 Modified to more easily allow for different compression types. Ryan C. Gordon <icculus@icculus.org> parents: 149 diff changeset	394 /* 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	395 if ( (sanebuf[0] & 0x80)
db3f0ee7aac0 Modified to more easily allow for different compression types. Ryan C. Gordon <icculus@icculus.org> parents: 149 diff changeset	396 \|\| (sanebuf[0] <= 0x3F)
db3f0ee7aac0 Modified to more easily allow for different compression types. Ryan C. Gordon <icculus@icculus.org> parents: 149 diff changeset	397 \|\| (sanebuf[0] > 0x40)
db3f0ee7aac0 Modified to more easily allow for different compression types. Ryan C. Gordon <icculus@icculus.org> parents: 149 diff changeset	398 \|\| (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	399 return 0;
db3f0ee7aac0 Modified to more easily allow for different compression types. Ryan C. Gordon <icculus@icculus.org> parents: 149 diff changeset	400
db3f0ee7aac0 Modified to more easily allow for different compression types. Ryan C. Gordon <icculus@icculus.org> parents: 149 diff changeset	401 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	402 \| (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	403 } /* SANE_to_Uint32 */
db3f0ee7aac0 Modified to more easily allow for different compression types. Ryan C. Gordon <icculus@icculus.org> parents: 149 diff changeset	404
db3f0ee7aac0 Modified to more easily allow for different compression types. Ryan C. Gordon <icculus@icculus.org> parents: 149 diff changeset	405
db3f0ee7aac0 Modified to more easily allow for different compression types. Ryan C. Gordon <icculus@icculus.org> parents: 149 diff changeset	406 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	407 {
db3f0ee7aac0 Modified to more easily allow for different compression types. Ryan C. Gordon <icculus@icculus.org> parents: 149 diff changeset	408 Sint32 siz = 0;
db3f0ee7aac0 Modified to more easily allow for different compression types. Ryan C. Gordon <icculus@icculus.org> parents: 149 diff changeset	409 Uint32 _id = 0;
db3f0ee7aac0 Modified to more easily allow for different compression types. Ryan C. Gordon <icculus@icculus.org> parents: 149 diff changeset	410
db3f0ee7aac0 Modified to more easily allow for different compression types. Ryan C. Gordon <icculus@icculus.org> parents: 149 diff changeset	411 while (1)
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 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	414 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	415 return(1);
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 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	418 siz = SDL_SwapBE32(siz);
db3f0ee7aac0 Modified to more easily allow for different compression types. Ryan C. Gordon <icculus@icculus.org> parents: 149 diff changeset	419 assert(siz > 0);
db3f0ee7aac0 Modified to more easily allow for different compression types. Ryan C. Gordon <icculus@icculus.org> parents: 149 diff changeset	420 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	421 } /* while */
db3f0ee7aac0 Modified to more easily allow for different compression types. Ryan C. Gordon <icculus@icculus.org> parents: 149 diff changeset	422
db3f0ee7aac0 Modified to more easily allow for different compression types. Ryan C. Gordon <icculus@icculus.org> parents: 149 diff changeset	423 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	424 } /* find_chunk */
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
db3f0ee7aac0 Modified to more easily allow for different compression types. Ryan C. Gordon <icculus@icculus.org> parents: 149 diff changeset	427 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	428 {
db3f0ee7aac0 Modified to more easily allow for different compression types. Ryan C. Gordon <icculus@icculus.org> parents: 149 diff changeset	429 fmt->type = c->compressionType;
db3f0ee7aac0 Modified to more easily allow for different compression types. Ryan C. Gordon <icculus@icculus.org> parents: 149 diff changeset	430
db3f0ee7aac0 Modified to more easily allow for different compression types. Ryan C. Gordon <icculus@icculus.org> parents: 149 diff changeset	431 /* 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	432 switch (fmt->type)
db3f0ee7aac0 Modified to more easily allow for different compression types. Ryan C. Gordon <icculus@icculus.org> parents: 149 diff changeset	433 {
db3f0ee7aac0 Modified to more easily allow for different compression types. Ryan C. Gordon <icculus@icculus.org> parents: 149 diff changeset	434 case noneID:
db3f0ee7aac0 Modified to more easily allow for different compression types. Ryan C. Gordon <icculus@icculus.org> parents: 149 diff changeset	435 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	436 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	437
db3f0ee7aac0 Modified to more easily allow for different compression types. Ryan C. Gordon <icculus@icculus.org> parents: 149 diff changeset	438 /* add other types here. */
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 default:
db3f0ee7aac0 Modified to more easily allow for different compression types. Ryan C. Gordon <icculus@icculus.org> parents: 149 diff changeset	441 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	442 (unsigned int) fmt->type));
387 fb519e6028e3 Changed all the Sound_SetError() calls to __Sound_SetError (or BAIL_MACRO) Ryan C. Gordon <icculus@icculus.org>* parents: 377 diff changeset	443 BAIL_MACRO("AIFF: Unsupported format", 0);
180 db3f0ee7aac0 Modified to more easily allow for different compression types. Ryan C. Gordon <icculus@icculus.org> parents: 149 diff changeset	444 } /* switch */
db3f0ee7aac0 Modified to more easily allow for different compression types. Ryan C. Gordon <icculus@icculus.org> parents: 149 diff changeset	445
db3f0ee7aac0 Modified to more easily allow for different compression types. Ryan C. Gordon <icculus@icculus.org> parents: 149 diff changeset	446 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	447 return(0);
db3f0ee7aac0 Modified to more easily allow for different compression types. Ryan C. Gordon <icculus@icculus.org> parents: 149 diff changeset	448 } /* read_fmt */
db3f0ee7aac0 Modified to more easily allow for different compression types. Ryan C. Gordon <icculus@icculus.org> parents: 149 diff changeset	449
db3f0ee7aac0 Modified to more easily allow for different compression types. Ryan C. Gordon <icculus@icculus.org> parents: 149 diff changeset	450
db3f0ee7aac0 Modified to more easily allow for different compression types. Ryan C. Gordon <icculus@icculus.org> parents: 149 diff changeset	451 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	452 {
db3f0ee7aac0 Modified to more easily allow for different compression types. Ryan C. Gordon <icculus@icculus.org> parents: 149 diff changeset	453 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	454 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	455 Uint32 chunk_id;
db3f0ee7aac0 Modified to more easily allow for different compression types. Ryan C. Gordon <icculus@icculus.org> parents: 149 diff changeset	456 int bytes_per_sample;
db3f0ee7aac0 Modified to more easily allow for different compression types. Ryan C. Gordon <icculus@icculus.org> parents: 149 diff changeset	457 long pos;
db3f0ee7aac0 Modified to more easily allow for different compression types. Ryan C. Gordon <icculus@icculus.org> parents: 149 diff changeset	458 comm_t c;
db3f0ee7aac0 Modified to more easily allow for different compression types. Ryan C. Gordon <icculus@icculus.org> parents: 149 diff changeset	459 ssnd_t s;
db3f0ee7aac0 Modified to more easily allow for different compression types. Ryan C. Gordon <icculus@icculus.org> parents: 149 diff changeset	460 aiff_t *a;
db3f0ee7aac0 Modified to more easily allow for different compression types. Ryan C. Gordon <icculus@icculus.org> parents: 149 diff changeset	461
db3f0ee7aac0 Modified to more easily allow for different compression types. Ryan C. Gordon <icculus@icculus.org> parents: 149 diff changeset	462 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	463 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	464
db3f0ee7aac0 Modified to more easily allow for different compression types. Ryan C. Gordon <icculus@icculus.org> parents: 149 diff changeset	465 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	466 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	467 "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	468
db3f0ee7aac0 Modified to more easily allow for different compression types. Ryan C. Gordon <icculus@icculus.org> parents: 149 diff changeset	469 /* 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	470 pos = SDL_RWtell(rw);
db3f0ee7aac0 Modified to more easily allow for different compression types. Ryan C. Gordon <icculus@icculus.org> parents: 149 diff changeset	471
db3f0ee7aac0 Modified to more easily allow for different compression types. Ryan C. Gordon <icculus@icculus.org> parents: 149 diff changeset	472 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	473 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	474 "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	475
db3f0ee7aac0 Modified to more easily allow for different compression types. Ryan C. Gordon <icculus@icculus.org> parents: 149 diff changeset	476 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	477 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	478
474 c66080364dff Most decoders now report total sample play time, now. Technically, this Ryan C. Gordon <icculus@icculus.org> parents: 400 diff changeset	479 /* Really, sample->total_time = (c.numSampleFrames1000) c.sampleRate /
c66080364dff Most decoders now report total sample play time, now. Technically, this Ryan C. Gordon <icculus@icculus.org> parents: 400 diff changeset	480 sample->total_time = (c.numSampleFrames / c.sampleRate) * 1000;
c66080364dff Most decoders now report total sample play time, now. Technically, this Ryan C. Gordon <icculus@icculus.org> parents: 400 diff changeset	481 sample->total_time += (c.numSampleFrames % c.sampleRate)
c66080364dff Most decoders now report total sample play time, now. Technically, this Ryan C. Gordon <icculus@icculus.org> parents: 400 diff changeset	482 * 1000 / c.sampleRate;
c66080364dff Most decoders now report total sample play time, now. Technically, this Ryan C. Gordon <icculus@icculus.org> parents: 400 diff changeset	483
180 db3f0ee7aac0 Modified to more easily allow for different compression types. Ryan C. Gordon <icculus@icculus.org> parents: 149 diff changeset	484 if (c.sampleSize <= 8)
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 sample->actual.format = AUDIO_S8;
369 d76a34316c84 Fixed to handle stereo AIFF files. Ryan C. Gordon <icculus@icculus.org> parents: 332 diff changeset	487 bytes_per_sample = c.numChannels;
180 db3f0ee7aac0 Modified to more easily allow for different compression types. Ryan C. Gordon <icculus@icculus.org> parents: 149 diff changeset	488 } /* if */
db3f0ee7aac0 Modified to more easily allow for different compression types. Ryan C. Gordon <icculus@icculus.org> parents: 149 diff changeset	489 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	490 {
db3f0ee7aac0 Modified to more easily allow for different compression types. Ryan C. Gordon <icculus@icculus.org> parents: 149 diff changeset	491 sample->actual.format = AUDIO_S16MSB;
369 d76a34316c84 Fixed to handle stereo AIFF files. Ryan C. Gordon <icculus@icculus.org> parents: 332 diff changeset	492 bytes_per_sample = 2 * c.numChannels;
180 db3f0ee7aac0 Modified to more easily allow for different compression types. Ryan C. Gordon <icculus@icculus.org> parents: 149 diff changeset	493 } /* if */
db3f0ee7aac0 Modified to more easily allow for different compression types. Ryan C. Gordon <icculus@icculus.org> parents: 149 diff changeset	494 else
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 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	497 } /* else */
db3f0ee7aac0 Modified to more easily allow for different compression types. Ryan C. Gordon <icculus@icculus.org> parents: 149 diff changeset	498
db3f0ee7aac0 Modified to more easily allow for different compression types. Ryan C. Gordon <icculus@icculus.org> parents: 149 diff changeset	499 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	500
db3f0ee7aac0 Modified to more easily allow for different compression types. Ryan C. Gordon <icculus@icculus.org> parents: 149 diff changeset	501 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	502 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	503
db3f0ee7aac0 Modified to more easily allow for different compression types. Ryan C. Gordon <icculus@icculus.org> parents: 149 diff changeset	504 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	505 {
db3f0ee7aac0 Modified to more easily allow for different compression types. Ryan C. Gordon <icculus@icculus.org> parents: 149 diff changeset	506 free(a);
db3f0ee7aac0 Modified to more easily allow for different compression types. Ryan C. Gordon <icculus@icculus.org> parents: 149 diff changeset	507 return(0);
db3f0ee7aac0 Modified to more easily allow for different compression types. Ryan C. Gordon <icculus@icculus.org> parents: 149 diff changeset	508 } /* if */
db3f0ee7aac0 Modified to more easily allow for different compression types. Ryan C. Gordon <icculus@icculus.org> parents: 149 diff changeset	509
db3f0ee7aac0 Modified to more easily allow for different compression types. Ryan C. Gordon <icculus@icculus.org> parents: 149 diff changeset	510 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	511
db3f0ee7aac0 Modified to more easily allow for different compression types. Ryan C. Gordon <icculus@icculus.org> parents: 149 diff changeset	512 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	513 {
db3f0ee7aac0 Modified to more easily allow for different compression types. Ryan C. Gordon <icculus@icculus.org> parents: 149 diff changeset	514 free(a);
387 fb519e6028e3 Changed all the Sound_SetError() calls to __Sound_SetError (or BAIL_MACRO) Ryan C. Gordon <icculus@icculus.org>* parents: 377 diff changeset	515 BAIL_MACRO("AIFF: No sound data chunk.", 0);
180 db3f0ee7aac0 Modified to more easily allow for different compression types. Ryan C. Gordon <icculus@icculus.org> parents: 149 diff changeset	516 } /* if */
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 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	519 {
db3f0ee7aac0 Modified to more easily allow for different compression types. Ryan C. Gordon <icculus@icculus.org> parents: 149 diff changeset	520 free(a);
387 fb519e6028e3 Changed all the Sound_SetError() calls to __Sound_SetError (or BAIL_MACRO) Ryan C. Gordon <icculus@icculus.org>* parents: 377 diff changeset	521 BAIL_MACRO("AIFF: Can't read sound data chunk.", 0);
180 db3f0ee7aac0 Modified to more easily allow for different compression types. Ryan C. Gordon <icculus@icculus.org> parents: 149 diff changeset	522 } /* if */
db3f0ee7aac0 Modified to more easily allow for different compression types. Ryan C. Gordon <icculus@icculus.org> parents: 149 diff changeset	523
221 c9772a9f5271 Initial implementation or stubs for rewind method. Other cleanups. Ryan C. Gordon <icculus@icculus.org> parents: 184 diff changeset	524 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	525 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	526 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	527
332 8ba541e81c1e seek method implementation. Ryan C. Gordon <icculus@icculus.org> parents: 306 diff changeset	528 sample->flags = SOUND_SAMPLEFLAG_CANSEEK;
180 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 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	531 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	532 } /* AIFF_open */
db3f0ee7aac0 Modified to more easily allow for different compression types. Ryan C. Gordon <icculus@icculus.org> parents: 149 diff changeset	533
db3f0ee7aac0 Modified to more easily allow for different compression types. Ryan C. Gordon <icculus@icculus.org> parents: 149 diff changeset	534
db3f0ee7aac0 Modified to more easily allow for different compression types. Ryan C. Gordon <icculus@icculus.org> parents: 149 diff changeset	535 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	536 {
db3f0ee7aac0 Modified to more easily allow for different compression types. Ryan C. Gordon <icculus@icculus.org> parents: 149 diff changeset	537 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	538 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	539 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	540 free(a);
306 c97be6e1bd27 Added framework for Sound_Seek() support. Ryan C. Gordon <icculus@icculus.org> parents: 221 diff changeset	541 } /* AIFF_close */
180 db3f0ee7aac0 Modified to more easily allow for different compression types. Ryan C. Gordon <icculus@icculus.org> parents: 149 diff changeset	542
db3f0ee7aac0 Modified to more easily allow for different compression types. Ryan C. Gordon <icculus@icculus.org> parents: 149 diff changeset	543
db3f0ee7aac0 Modified to more easily allow for different compression types. Ryan C. Gordon <icculus@icculus.org> parents: 149 diff changeset	544 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	545 {
db3f0ee7aac0 Modified to more easily allow for different compression types. Ryan C. Gordon <icculus@icculus.org> parents: 149 diff changeset	546 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	547 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	548 return(a->fmt.read_sample(sample));
34 938ef560c7bf Initial add. Thanks, Torbj�rn! Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	549 } /* AIFF_read */
938ef560c7bf Initial add. Thanks, Torbj�rn! Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	550
221 c9772a9f5271 Initial implementation or stubs for rewind method. Other cleanups. Ryan C. Gordon <icculus@icculus.org> parents: 184 diff changeset	551
c9772a9f5271 Initial implementation or stubs for rewind method. Other cleanups. Ryan C. Gordon <icculus@icculus.org> parents: 184 diff changeset	552 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	553 {
c9772a9f5271 Initial implementation or stubs for rewind method. Other cleanups. Ryan C. Gordon <icculus@icculus.org> parents: 184 diff changeset	554 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	555 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	556 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	557 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	558 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	559 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	560 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	561 } /* AIFF_rewind */
c9772a9f5271 Initial implementation or stubs for rewind method. Other cleanups. Ryan C. Gordon <icculus@icculus.org> parents: 184 diff changeset	562
306 c97be6e1bd27 Added framework for Sound_Seek() support. Ryan C. Gordon <icculus@icculus.org> parents: 221 diff changeset	563
c97be6e1bd27 Added framework for Sound_Seek() support. Ryan C. Gordon <icculus@icculus.org> parents: 221 diff changeset	564 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	565 {
332 8ba541e81c1e seek method implementation. Ryan C. Gordon <icculus@icculus.org> parents: 306 diff changeset	566 Sound_SampleInternal internal = (Sound_SampleInternal ) sample->opaque;
8ba541e81c1e seek method implementation. Ryan C. Gordon <icculus@icculus.org> parents: 306 diff changeset	567 aiff_t a = (aiff_t ) internal->decoder_private;
8ba541e81c1e seek method implementation. Ryan C. Gordon <icculus@icculus.org> parents: 306 diff changeset	568 return(a->fmt.seek_sample(sample, ms));
306 c97be6e1bd27 Added framework for Sound_Seek() support. Ryan C. Gordon <icculus@icculus.org> parents: 221 diff changeset	569 } /* AIFF_seek */
c97be6e1bd27 Added framework for Sound_Seek() support. Ryan C. Gordon <icculus@icculus.org> parents: 221 diff changeset	570
64 40006625142a Changes in preparation of autoconf support. Ryan C. Gordon <icculus@icculus.org> parents: 62 diff changeset	571 #endif /* SOUND_SUPPORTS_AIFF */
40006625142a Changes in preparation of autoconf support. Ryan C. Gordon <icculus@icculus.org> parents: 62 diff changeset	572
180 db3f0ee7aac0 Modified to more easily allow for different compression types. Ryan C. Gordon <icculus@icculus.org> parents: 149 diff changeset	573 /* end of aiff.c ... */
34 938ef560c7bf Initial add. Thanks, Torbj�rn! Ryan C. Gordon <icculus@icculus.org> parents: diff changeset	574

Mercurial > SDL_sound_CoreAudio

annotate decoders/aiff.c @ 474:c66080364dff