Mercurial > SDL_sound_CoreAudio

annotate decoders/aiff.c @ 168:87b00f023710

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
Added --predecode functionality.
author Ryan C. Gordon <icculus@icculus.org>
date Mon, 26 Nov 2001 04:33:50 +0000
parents 1df5c106504e
children db3f0ee7aac0
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 *
938ef560c7bf Initial add. Thanks, Torbj�rn!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
39 * Please see the file LICENSE in the source's root directory.
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 Torbjörn 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
47
ea58bc3b15d7 Added init() and quit() methods.
Ryan C. Gordon <icculus@icculus.org>
parents: 41
diff changeset
60 static int AIFF_init(void);
ea58bc3b15d7 Added init() and quit() methods.
Ryan C. Gordon <icculus@icculus.org>
parents: 41
diff changeset
61 static void AIFF_quit(void);
34
938ef560c7bf Initial add. Thanks, Torbj�rn!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
62 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
63 static void AIFF_close(Sound_Sample *sample);
938ef560c7bf Initial add. Thanks, Torbj�rn!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
64 static Uint32 AIFF_read(Sound_Sample *sample);
938ef560c7bf Initial add. Thanks, Torbj�rn!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
65
149
1df5c106504e Decoders can now list multiple file extensions.
Ryan C. Gordon <icculus@icculus.org>
parents: 116
diff changeset
66 static const char *extensions_aiff[] = { "AIFF", NULL };
34
938ef560c7bf Initial add. Thanks, Torbj�rn!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
67 const Sound_DecoderFunctions __Sound_DecoderFunctions_AIFF =
938ef560c7bf Initial add. Thanks, Torbj�rn!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
68 {
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 extensions_aiff,
34
938ef560c7bf Initial add. Thanks, Torbj�rn!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
71 "Audio Interchange File Format",
938ef560c7bf Initial add. Thanks, Torbj�rn!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
72 "Torbjörn Andersson <d91tan@Update.UU.SE>",
938ef560c7bf Initial add. Thanks, Torbj�rn!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
73 "http://www.icculus.org/SDL_sound/"
938ef560c7bf Initial add. Thanks, Torbj�rn!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
74 },
938ef560c7bf Initial add. Thanks, Torbj�rn!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
75
47
ea58bc3b15d7 Added init() and quit() methods.
Ryan C. Gordon <icculus@icculus.org>
parents: 41
diff changeset
76 AIFF_init, /* init() method */
ea58bc3b15d7 Added init() and quit() methods.
Ryan C. Gordon <icculus@icculus.org>
parents: 41
diff changeset
77 AIFF_quit, /* quit() method */
ea58bc3b15d7 Added init() and quit() methods.
Ryan C. Gordon <icculus@icculus.org>
parents: 41
diff changeset
78 AIFF_open, /* open() method */
ea58bc3b15d7 Added init() and quit() methods.
Ryan C. Gordon <icculus@icculus.org>
parents: 41
diff changeset
79 AIFF_close, /* close() method */
ea58bc3b15d7 Added init() and quit() methods.
Ryan C. Gordon <icculus@icculus.org>
parents: 41
diff changeset
80 AIFF_read /* read() method */
34
938ef560c7bf Initial add. Thanks, Torbj�rn!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
81 };
938ef560c7bf Initial add. Thanks, Torbj�rn!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
82
938ef560c7bf Initial add. Thanks, Torbj�rn!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
83
938ef560c7bf Initial add. Thanks, Torbj�rn!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
84 /* this is what we store in our internal->decoder_private field... */
938ef560c7bf Initial add. Thanks, Torbj�rn!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
85 typedef struct {
938ef560c7bf Initial add. Thanks, Torbj�rn!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
86 Sint32 bytesLeft;
938ef560c7bf Initial add. Thanks, Torbj�rn!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
87 } aiff_t;
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 /* Chunk management code... */
938ef560c7bf Initial add. Thanks, Torbj�rn!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
91
938ef560c7bf Initial add. Thanks, Torbj�rn!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
92 #define formID 0x4d524f46 /* "FORM", in ascii. */
938ef560c7bf Initial add. Thanks, Torbj�rn!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
93 #define aiffID 0x46464941 /* "AIFF", in ascii. */
938ef560c7bf Initial add. Thanks, Torbj�rn!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
94 #define aifcID 0x43464941 /* "AIFC", in ascii. */
938ef560c7bf Initial add. Thanks, Torbj�rn!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
95 #define ssndID 0x444e5353 /* "SSND", in ascii. */
938ef560c7bf Initial add. Thanks, Torbj�rn!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
96 #define commID 0x4d4d4f43 /* "COMM", in ascii. */
938ef560c7bf Initial add. Thanks, Torbj�rn!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
97
938ef560c7bf Initial add. Thanks, Torbj�rn!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
98 #define noneID 0x454e4f4e /* "NONE", in ascii. */
938ef560c7bf Initial add. Thanks, Torbj�rn!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
99
938ef560c7bf Initial add. Thanks, Torbj�rn!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
100 typedef struct
938ef560c7bf Initial add. Thanks, Torbj�rn!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
101 {
938ef560c7bf Initial add. Thanks, Torbj�rn!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
102 Uint32 ckID;
938ef560c7bf Initial add. Thanks, Torbj�rn!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
103 Uint32 ckDataSize;
938ef560c7bf Initial add. Thanks, Torbj�rn!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
104 Uint16 numChannels;
938ef560c7bf Initial add. Thanks, Torbj�rn!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
105 Uint32 numSampleFrames;
938ef560c7bf Initial add. Thanks, Torbj�rn!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
106 Uint16 sampleSize;
938ef560c7bf Initial add. Thanks, Torbj�rn!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
107 Uint32 sampleRate;
938ef560c7bf Initial add. Thanks, Torbj�rn!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
108 /*
938ef560c7bf Initial add. Thanks, Torbj�rn!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
109 * 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
110 * interested the allowed compression types are supposed to be
938ef560c7bf Initial add. Thanks, Torbj�rn!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
111 *
938ef560c7bf Initial add. Thanks, Torbj�rn!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
112 * compressionType compressionName meaning
938ef560c7bf Initial add. Thanks, Torbj�rn!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
113 * ---------------------------------------------------------------
938ef560c7bf Initial add. Thanks, Torbj�rn!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
114 * 'NONE' "not compressed" uncompressed, that is,
938ef560c7bf Initial add. Thanks, Torbj�rn!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
115 * straight digitized samples
938ef560c7bf Initial add. Thanks, Torbj�rn!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
116 * '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
117 * Compression / Expansion)
938ef560c7bf Initial add. Thanks, Torbj�rn!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
118 * '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
119 * Compression / Expansion)
938ef560c7bf Initial add. Thanks, Torbj�rn!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
120 * '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
121 * Compression / Expansion
938ef560c7bf Initial add. Thanks, Torbj�rn!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
122 * '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
123 * Compression / Expansion
938ef560c7bf Initial add. Thanks, Torbj�rn!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
124 *
938ef560c7bf Initial add. Thanks, Torbj�rn!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
125 * 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
126 * 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
127 * 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
128 * 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
129 * 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
130 * byte is not reflected in the count."
938ef560c7bf Initial add. Thanks, Torbj�rn!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
131 *
938ef560c7bf Initial add. Thanks, Torbj�rn!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
132 * 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
133 * good as mine.
938ef560c7bf Initial add. Thanks, Torbj�rn!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
134 */
938ef560c7bf Initial add. Thanks, Torbj�rn!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
135 Uint32 compressionType;
938ef560c7bf Initial add. Thanks, Torbj�rn!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
136 #if 0
938ef560c7bf Initial add. Thanks, Torbj�rn!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
137 pstring compressionName;
938ef560c7bf Initial add. Thanks, Torbj�rn!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
138 #endif
938ef560c7bf Initial add. Thanks, Torbj�rn!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
139 } comm_t;
938ef560c7bf Initial add. Thanks, Torbj�rn!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
140
938ef560c7bf Initial add. Thanks, Torbj�rn!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
141
47
ea58bc3b15d7 Added init() and quit() methods.
Ryan C. Gordon <icculus@icculus.org>
parents: 41
diff changeset
142
ea58bc3b15d7 Added init() and quit() methods.
Ryan C. Gordon <icculus@icculus.org>
parents: 41
diff changeset
143 static int AIFF_init(void)
ea58bc3b15d7 Added init() and quit() methods.
Ryan C. Gordon <icculus@icculus.org>
parents: 41
diff changeset
144 {
ea58bc3b15d7 Added init() and quit() methods.
Ryan C. Gordon <icculus@icculus.org>
parents: 41
diff changeset
145 return(1); /* always succeeds. */
ea58bc3b15d7 Added init() and quit() methods.
Ryan C. Gordon <icculus@icculus.org>
parents: 41
diff changeset
146 } /* AIFF_init */
ea58bc3b15d7 Added init() and quit() methods.
Ryan C. Gordon <icculus@icculus.org>
parents: 41
diff changeset
147
ea58bc3b15d7 Added init() and quit() methods.
Ryan C. Gordon <icculus@icculus.org>
parents: 41
diff changeset
148
ea58bc3b15d7 Added init() and quit() methods.
Ryan C. Gordon <icculus@icculus.org>
parents: 41
diff changeset
149 static void AIFF_quit(void)
ea58bc3b15d7 Added init() and quit() methods.
Ryan C. Gordon <icculus@icculus.org>
parents: 41
diff changeset
150 {
ea58bc3b15d7 Added init() and quit() methods.
Ryan C. Gordon <icculus@icculus.org>
parents: 41
diff changeset
151 /* it's a no-op. */
ea58bc3b15d7 Added init() and quit() methods.
Ryan C. Gordon <icculus@icculus.org>
parents: 41
diff changeset
152 } /* AIFF_quit */
ea58bc3b15d7 Added init() and quit() methods.
Ryan C. Gordon <icculus@icculus.org>
parents: 41
diff changeset
153
ea58bc3b15d7 Added init() and quit() methods.
Ryan C. Gordon <icculus@icculus.org>
parents: 41
diff changeset
154
62
b13fafb976be Changed _D macro to DBGSND.
Ryan C. Gordon <icculus@icculus.org>
parents: 47
diff changeset
155 /*
34
938ef560c7bf Initial add. Thanks, Torbj�rn!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
156 * Sample rate is encoded as an "80 bit IEEE Standard 754 floating point
938ef560c7bf Initial add. Thanks, Torbj�rn!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
157 * number (Standard Apple Numeric Environment [SANE] data type Extended)".
938ef560c7bf Initial add. Thanks, Torbj�rn!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
158 * Whose bright idea was that?
938ef560c7bf Initial add. Thanks, Torbj�rn!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
159 *
938ef560c7bf Initial add. Thanks, Torbj�rn!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
160 * This function was adapted from libsndfile, and while I do know a little
938ef560c7bf Initial add. Thanks, Torbj�rn!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
161 * bit about the IEEE floating point standard I don't pretend to fully
938ef560c7bf Initial add. Thanks, Torbj�rn!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
162 * understand this.
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
938ef560c7bf Initial add. Thanks, Torbj�rn!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
165 static Uint32 SANE_to_Uint32 (Uint8 *sanebuf)
938ef560c7bf Initial add. Thanks, Torbj�rn!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
166 {
938ef560c7bf Initial add. Thanks, Torbj�rn!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
167 /* Is the frequency outside of what we can represent with Uint32? */
938ef560c7bf Initial add. Thanks, Torbj�rn!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
168 if ( (sanebuf[0] & 0x80)
938ef560c7bf Initial add. Thanks, Torbj�rn!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
169 || (sanebuf[0] <= 0x3F)
938ef560c7bf Initial add. Thanks, Torbj�rn!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
170 || (sanebuf[0] > 0x40)
938ef560c7bf Initial add. Thanks, Torbj�rn!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
171 || (sanebuf[0] == 0x40 && sanebuf[1] > 0x1C) )
938ef560c7bf Initial add. Thanks, Torbj�rn!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
172 return 0;
938ef560c7bf Initial add. Thanks, Torbj�rn!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
173
938ef560c7bf Initial add. Thanks, Torbj�rn!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
174 return ((sanebuf[2] << 23) | (sanebuf[3] << 15) | (sanebuf[4] << 7)
938ef560c7bf Initial add. Thanks, Torbj�rn!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
175 | (sanebuf[5] >> 1)) >> (29 - sanebuf[1]);
938ef560c7bf Initial add. Thanks, Torbj�rn!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
176 } /* SANE_to_Uint32 */
938ef560c7bf Initial add. Thanks, Torbj�rn!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
177
938ef560c7bf Initial add. Thanks, Torbj�rn!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
178
938ef560c7bf Initial add. Thanks, Torbj�rn!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
179 /*
938ef560c7bf Initial add. Thanks, Torbj�rn!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
180 * 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
181 * 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
182 */
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 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
185 {
938ef560c7bf Initial add. Thanks, Torbj�rn!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
186 Uint8 sampleRate[10];
938ef560c7bf Initial add. Thanks, Torbj�rn!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
187
938ef560c7bf Initial add. Thanks, Torbj�rn!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
188 /* 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
189 comm->ckID = commID;
938ef560c7bf Initial add. Thanks, Torbj�rn!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
190
938ef560c7bf Initial add. Thanks, Torbj�rn!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
191 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
192 return(0);
938ef560c7bf Initial add. Thanks, Torbj�rn!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
193 comm->ckDataSize = SDL_SwapBE32(comm->ckDataSize);
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 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
196 return(0);
938ef560c7bf Initial add. Thanks, Torbj�rn!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
197 comm->numChannels = SDL_SwapBE16(comm->numChannels);
938ef560c7bf Initial add. Thanks, Torbj�rn!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
198
41
0d5ff5679523 Cleanups from Torbj�rn Andersson.
Ryan C. Gordon <icculus@icculus.org>
parents: 34
diff changeset
199 if (SDL_RWread(rw, &comm->numSampleFrames,
0d5ff5679523 Cleanups from Torbj�rn Andersson.
Ryan C. Gordon <icculus@icculus.org>
parents: 34
diff changeset
200 sizeof (comm->numSampleFrames), 1) != 1)
34
938ef560c7bf Initial add. Thanks, Torbj�rn!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
201 return(0);
938ef560c7bf Initial add. Thanks, Torbj�rn!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
202 comm->numSampleFrames = SDL_SwapBE32(comm->numSampleFrames);
938ef560c7bf Initial add. Thanks, Torbj�rn!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
203
938ef560c7bf Initial add. Thanks, Torbj�rn!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
204 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
205 return(0);
938ef560c7bf Initial add. Thanks, Torbj�rn!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
206 comm->sampleSize = SDL_SwapBE16(comm->sampleSize);
938ef560c7bf Initial add. Thanks, Torbj�rn!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
207
41
0d5ff5679523 Cleanups from Torbj�rn Andersson.
Ryan C. Gordon <icculus@icculus.org>
parents: 34
diff changeset
208 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
209 return(0);
938ef560c7bf Initial add. Thanks, Torbj�rn!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
210 comm->sampleRate = SANE_to_Uint32(sampleRate);
938ef560c7bf Initial add. Thanks, Torbj�rn!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
211
938ef560c7bf Initial add. Thanks, Torbj�rn!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
212 if (comm->ckDataSize > sizeof(comm->numChannels)
938ef560c7bf Initial add. Thanks, Torbj�rn!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
213 + sizeof(comm->numSampleFrames)
938ef560c7bf Initial add. Thanks, Torbj�rn!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
214 + sizeof(comm->sampleSize)
938ef560c7bf Initial add. Thanks, Torbj�rn!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
215 + sizeof(sampleRate))
938ef560c7bf Initial add. Thanks, Torbj�rn!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
216 {
41
0d5ff5679523 Cleanups from Torbj�rn Andersson.
Ryan C. Gordon <icculus@icculus.org>
parents: 34
diff changeset
217 if (SDL_RWread(rw, &comm->compressionType,
0d5ff5679523 Cleanups from Torbj�rn Andersson.
Ryan C. Gordon <icculus@icculus.org>
parents: 34
diff changeset
218 sizeof (comm->compressionType), 1) != 1)
34
938ef560c7bf Initial add. Thanks, Torbj�rn!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
219 return(0);
938ef560c7bf Initial add. Thanks, Torbj�rn!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
220 comm->compressionType = SDL_SwapBE32(comm->compressionType);
938ef560c7bf Initial add. Thanks, Torbj�rn!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
221 } /* if */
938ef560c7bf Initial add. Thanks, Torbj�rn!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
222 else
938ef560c7bf Initial add. Thanks, Torbj�rn!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
223 comm->compressionType = noneID;
938ef560c7bf Initial add. Thanks, Torbj�rn!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
224
938ef560c7bf Initial add. Thanks, Torbj�rn!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
225 return(1);
938ef560c7bf Initial add. Thanks, Torbj�rn!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
226 } /* read_comm_chunk */
938ef560c7bf Initial add. Thanks, Torbj�rn!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
227
938ef560c7bf Initial add. Thanks, Torbj�rn!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
228 typedef struct
938ef560c7bf Initial add. Thanks, Torbj�rn!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
229 {
938ef560c7bf Initial add. Thanks, Torbj�rn!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
230 Uint32 ckID;
938ef560c7bf Initial add. Thanks, Torbj�rn!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
231 Uint32 ckDataSize;
938ef560c7bf Initial add. Thanks, Torbj�rn!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
232 Uint32 offset;
938ef560c7bf Initial add. Thanks, Torbj�rn!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
233 Uint32 blockSize;
938ef560c7bf Initial add. Thanks, Torbj�rn!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
234 /*
938ef560c7bf Initial add. Thanks, Torbj�rn!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
235 * 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
236 * length from numSampleFrames than from ckDataSize.)
938ef560c7bf Initial add. Thanks, Torbj�rn!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
237 */
938ef560c7bf Initial add. Thanks, Torbj�rn!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
238 } ssnd_t;
938ef560c7bf Initial add. Thanks, Torbj�rn!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
239
938ef560c7bf Initial add. Thanks, Torbj�rn!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
240
938ef560c7bf Initial add. Thanks, Torbj�rn!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
241 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
242 {
938ef560c7bf Initial add. Thanks, Torbj�rn!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
243 /* 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
244 ssnd->ckID = ssndID;
938ef560c7bf Initial add. Thanks, Torbj�rn!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
245
938ef560c7bf Initial add. Thanks, Torbj�rn!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
246 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
247 return(0);
938ef560c7bf Initial add. Thanks, Torbj�rn!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
248 ssnd->ckDataSize = SDL_SwapBE32(ssnd->ckDataSize);
938ef560c7bf Initial add. Thanks, Torbj�rn!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
249
41
0d5ff5679523 Cleanups from Torbj�rn Andersson.
Ryan C. Gordon <icculus@icculus.org>
parents: 34
diff changeset
250 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
251 return(0);
938ef560c7bf Initial add. Thanks, Torbj�rn!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
252 ssnd->offset = SDL_SwapBE32(ssnd->offset);
938ef560c7bf Initial add. Thanks, Torbj�rn!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
253
41
0d5ff5679523 Cleanups from Torbj�rn Andersson.
Ryan C. Gordon <icculus@icculus.org>
parents: 34
diff changeset
254 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
255 return(0);
938ef560c7bf Initial add. Thanks, Torbj�rn!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
256 ssnd->blockSize = SDL_SwapBE32(ssnd->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 /* 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
259 /* !!! FIXME: Int? Really? */
0d5ff5679523 Cleanups from Torbj�rn Andersson.
Ryan C. Gordon <icculus@icculus.org>
parents: 34
diff changeset
260 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
261 return(0);
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 return(1);
938ef560c7bf Initial add. Thanks, Torbj�rn!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
264 } /* read_ssnd_chunk */
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
938ef560c7bf Initial add. Thanks, Torbj�rn!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
267 static int find_chunk(SDL_RWops *rw, Uint32 id)
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 Sint32 siz = 0;
938ef560c7bf Initial add. Thanks, Torbj�rn!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
270 Uint32 _id = 0;
938ef560c7bf Initial add. Thanks, Torbj�rn!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
271
938ef560c7bf Initial add. Thanks, Torbj�rn!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
272 while (1)
938ef560c7bf Initial add. Thanks, Torbj�rn!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
273 {
938ef560c7bf Initial add. Thanks, Torbj�rn!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
274 BAIL_IF_MACRO(SDL_RWread(rw, &_id, sizeof (_id), 1) != 1, NULL, 0);
938ef560c7bf Initial add. Thanks, Torbj�rn!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
275 if (SDL_SwapLE32(_id) == id)
938ef560c7bf Initial add. Thanks, Torbj�rn!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
276 return(1);
938ef560c7bf Initial add. Thanks, Torbj�rn!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
277
938ef560c7bf Initial add. Thanks, Torbj�rn!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
278 BAIL_IF_MACRO(SDL_RWread(rw, &siz, sizeof (siz), 1) != 1, NULL, 0);
938ef560c7bf Initial add. Thanks, Torbj�rn!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
279 siz = SDL_SwapBE32(siz);
938ef560c7bf Initial add. Thanks, Torbj�rn!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
280 assert(siz > 0);
938ef560c7bf Initial add. Thanks, Torbj�rn!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
281 BAIL_IF_MACRO(SDL_RWseek(rw, siz, SEEK_CUR) == -1, NULL, 0);
938ef560c7bf Initial add. Thanks, Torbj�rn!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
282 } /* while */
938ef560c7bf Initial add. Thanks, Torbj�rn!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
283
938ef560c7bf Initial add. Thanks, Torbj�rn!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
284 return(0); /* shouldn't hit this, but just in case... */
938ef560c7bf Initial add. Thanks, Torbj�rn!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
285 } /* find_chunk */
938ef560c7bf Initial add. Thanks, Torbj�rn!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
286
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 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
289 {
938ef560c7bf Initial add. Thanks, Torbj�rn!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
290 Sound_SampleInternal *internal = (Sound_SampleInternal *) sample->opaque;
938ef560c7bf Initial add. Thanks, Torbj�rn!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
291 SDL_RWops *rw = internal->rw;
938ef560c7bf Initial add. Thanks, Torbj�rn!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
292 Uint32 chunk_id;
938ef560c7bf Initial add. Thanks, Torbj�rn!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
293 int bytes_per_sample;
938ef560c7bf Initial add. Thanks, Torbj�rn!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
294 long pos;
938ef560c7bf Initial add. Thanks, Torbj�rn!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
295 comm_t c;
938ef560c7bf Initial add. Thanks, Torbj�rn!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
296 ssnd_t s;
938ef560c7bf Initial add. Thanks, Torbj�rn!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
297 aiff_t *a;
938ef560c7bf Initial add. Thanks, Torbj�rn!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
298
938ef560c7bf Initial add. Thanks, Torbj�rn!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
299 BAIL_IF_MACRO(SDL_ReadLE32(rw) != formID, "AIFF: Not a FORM file.", 0);
938ef560c7bf Initial add. Thanks, Torbj�rn!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
300 SDL_ReadBE32(rw); /* throw the length away; we don't need it. */
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 chunk_id = SDL_ReadLE32(rw);
938ef560c7bf Initial add. Thanks, Torbj�rn!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
303 BAIL_IF_MACRO(chunk_id != aiffID && chunk_id != aifcID,
938ef560c7bf Initial add. Thanks, Torbj�rn!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
304 "AIFF: Not an AIFF or AIFC file.", 0);
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 /* Chunks may appear in any order, so we establish base camp here. */
938ef560c7bf Initial add. Thanks, Torbj�rn!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
307 pos = SDL_RWtell(rw);
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 BAIL_IF_MACRO(!find_chunk(rw, commID), "AIFF: No common chunk.", 0);
41
0d5ff5679523 Cleanups from Torbj�rn Andersson.
Ryan C. Gordon <icculus@icculus.org>
parents: 34
diff changeset
310 BAIL_IF_MACRO(!read_comm_chunk(rw, &c),
0d5ff5679523 Cleanups from Torbj�rn Andersson.
Ryan C. Gordon <icculus@icculus.org>
parents: 34
diff changeset
311 "AIFF: Can't read common chunk.", 0);
34
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 /* !!! FIXME: This will have to change for compression types... */
41
0d5ff5679523 Cleanups from Torbj�rn Andersson.
Ryan C. Gordon <icculus@icculus.org>
parents: 34
diff changeset
314 BAIL_IF_MACRO(c.compressionType != noneID,
0d5ff5679523 Cleanups from Torbj�rn Andersson.
Ryan C. Gordon <icculus@icculus.org>
parents: 34
diff changeset
315 "AIFF: Unsupported encoding.", 0);
34
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 BAIL_IF_MACRO(c.sampleRate == 0, "AIFF: Unsupported sample rate.", 0);
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 sample->actual.channels = (Uint8) c.numChannels;
938ef560c7bf Initial add. Thanks, Torbj�rn!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
320 sample->actual.rate = c.sampleRate;
938ef560c7bf Initial add. Thanks, Torbj�rn!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
321
938ef560c7bf Initial add. Thanks, Torbj�rn!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
322 if (c.sampleSize <= 8)
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 sample->actual.format = AUDIO_S8;
938ef560c7bf Initial add. Thanks, Torbj�rn!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
325 bytes_per_sample = 1;
938ef560c7bf Initial add. Thanks, Torbj�rn!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
326 } /* if */
938ef560c7bf Initial add. Thanks, Torbj�rn!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
327 else if (c.sampleSize <= 16)
938ef560c7bf Initial add. Thanks, Torbj�rn!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
328 {
938ef560c7bf Initial add. Thanks, Torbj�rn!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
329 sample->actual.format = AUDIO_S16MSB;
938ef560c7bf Initial add. Thanks, Torbj�rn!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
330 bytes_per_sample = 2;
938ef560c7bf Initial add. Thanks, Torbj�rn!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
331 } /* if */
938ef560c7bf Initial add. Thanks, Torbj�rn!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
332 else
938ef560c7bf Initial add. Thanks, Torbj�rn!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
333 BAIL_MACRO("AIFF: Unsupported sample size.", 0);
938ef560c7bf Initial add. Thanks, Torbj�rn!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
334
938ef560c7bf Initial add. Thanks, Torbj�rn!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
335 SDL_RWseek(rw, pos, SEEK_SET);
938ef560c7bf Initial add. Thanks, Torbj�rn!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
336
938ef560c7bf Initial add. Thanks, Torbj�rn!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
337 BAIL_IF_MACRO(!find_chunk(rw, ssndID), "AIFF: No sound data chunk.", 0);
41
0d5ff5679523 Cleanups from Torbj�rn Andersson.
Ryan C. Gordon <icculus@icculus.org>
parents: 34
diff changeset
338 BAIL_IF_MACRO(!read_ssnd_chunk(rw, &s),
0d5ff5679523 Cleanups from Torbj�rn Andersson.
Ryan C. Gordon <icculus@icculus.org>
parents: 34
diff changeset
339 "AIFF: Can't read sound data chunk.", 0);
34
938ef560c7bf Initial add. Thanks, Torbj�rn!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
340
938ef560c7bf Initial add. Thanks, Torbj�rn!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
341 a = (aiff_t *) malloc(sizeof(aiff_t));
938ef560c7bf Initial add. Thanks, Torbj�rn!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
342 BAIL_IF_MACRO(a == NULL, ERR_OUT_OF_MEMORY, 0);
938ef560c7bf Initial add. Thanks, Torbj�rn!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
343 a->bytesLeft = bytes_per_sample * c.numSampleFrames;
938ef560c7bf Initial add. Thanks, Torbj�rn!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
344 internal->decoder_private = (void *) a;
938ef560c7bf Initial add. Thanks, Torbj�rn!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
345
41
0d5ff5679523 Cleanups from Torbj�rn Andersson.
Ryan C. Gordon <icculus@icculus.org>
parents: 34
diff changeset
346 sample->flags = SOUND_SAMPLEFLAG_NONE;
0d5ff5679523 Cleanups from Torbj�rn Andersson.
Ryan C. Gordon <icculus@icculus.org>
parents: 34
diff changeset
347
62
b13fafb976be Changed _D macro to DBGSND.
Ryan C. Gordon <icculus@icculus.org>
parents: 47
diff changeset
348 SNDDBG(("AIFF: Accepting data stream.\n"));
34
938ef560c7bf Initial add. Thanks, Torbj�rn!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
349 return(1); /* we'll handle this data. */
938ef560c7bf Initial add. Thanks, Torbj�rn!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
350 } /* AIFF_open */
938ef560c7bf Initial add. Thanks, Torbj�rn!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
351
938ef560c7bf Initial add. Thanks, Torbj�rn!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
352
938ef560c7bf Initial add. Thanks, Torbj�rn!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
353 static void AIFF_close(Sound_Sample *sample)
938ef560c7bf Initial add. Thanks, Torbj�rn!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
354 {
938ef560c7bf Initial add. Thanks, Torbj�rn!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
355 Sound_SampleInternal *internal = (Sound_SampleInternal *) sample->opaque;
938ef560c7bf Initial add. Thanks, Torbj�rn!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
356 free(internal->decoder_private);
938ef560c7bf Initial add. Thanks, Torbj�rn!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
357 } /* WAV_close */
938ef560c7bf Initial add. Thanks, Torbj�rn!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
358
938ef560c7bf Initial add. Thanks, Torbj�rn!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
359
938ef560c7bf Initial add. Thanks, Torbj�rn!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
360 static Uint32 AIFF_read(Sound_Sample *sample)
938ef560c7bf Initial add. Thanks, Torbj�rn!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
361 {
938ef560c7bf Initial add. Thanks, Torbj�rn!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
362 Uint32 retval;
938ef560c7bf Initial add. Thanks, Torbj�rn!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
363 Sound_SampleInternal *internal = (Sound_SampleInternal *) sample->opaque;
938ef560c7bf Initial add. Thanks, Torbj�rn!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
364 aiff_t *a = (aiff_t *) internal->decoder_private;
938ef560c7bf Initial add. Thanks, Torbj�rn!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
365 Uint32 max = (internal->buffer_size < (Uint32) a->bytesLeft) ?
938ef560c7bf Initial add. Thanks, Torbj�rn!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
366 internal->buffer_size : (Uint32) a->bytesLeft;
938ef560c7bf Initial add. Thanks, Torbj�rn!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
367
938ef560c7bf Initial add. Thanks, Torbj�rn!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
368 assert(max > 0);
938ef560c7bf Initial add. Thanks, Torbj�rn!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
369
938ef560c7bf Initial add. Thanks, Torbj�rn!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
370 /*
938ef560c7bf Initial add. Thanks, Torbj�rn!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
371 * 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
372 * directly into the internal buffer...
938ef560c7bf Initial add. Thanks, Torbj�rn!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
373 */
938ef560c7bf Initial add. Thanks, Torbj�rn!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
374 retval = SDL_RWread(internal->rw, internal->buffer, 1, max);
938ef560c7bf Initial add. Thanks, Torbj�rn!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
375
938ef560c7bf Initial add. Thanks, Torbj�rn!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
376 a->bytesLeft -= retval;
938ef560c7bf Initial add. Thanks, Torbj�rn!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
377
938ef560c7bf Initial add. Thanks, Torbj�rn!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
378 /* Make sure the read went smoothly... */
938ef560c7bf Initial add. Thanks, Torbj�rn!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
379 if ((retval == 0) || (a->bytesLeft == 0))
938ef560c7bf Initial add. Thanks, Torbj�rn!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
380 sample->flags |= SOUND_SAMPLEFLAG_EOF;
938ef560c7bf Initial add. Thanks, Torbj�rn!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
381
938ef560c7bf Initial add. Thanks, Torbj�rn!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
382 else if (retval == -1)
938ef560c7bf Initial add. Thanks, Torbj�rn!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
383 sample->flags |= SOUND_SAMPLEFLAG_ERROR;
938ef560c7bf Initial add. Thanks, Torbj�rn!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
384
938ef560c7bf Initial add. Thanks, Torbj�rn!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
385 /* (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
386 else if (retval < internal->buffer_size)
938ef560c7bf Initial add. Thanks, Torbj�rn!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
387 sample->flags |= SOUND_SAMPLEFLAG_EAGAIN;
938ef560c7bf Initial add. Thanks, Torbj�rn!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
388
938ef560c7bf Initial add. Thanks, Torbj�rn!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
389 return(retval);
938ef560c7bf Initial add. Thanks, Torbj�rn!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
390 } /* AIFF_read */
938ef560c7bf Initial add. Thanks, Torbj�rn!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
391
64
40006625142a Changes in preparation of autoconf support.
Ryan C. Gordon <icculus@icculus.org>
parents: 62
diff changeset
392 #endif /* SOUND_SUPPORTS_AIFF */
40006625142a Changes in preparation of autoconf support.
Ryan C. Gordon <icculus@icculus.org>
parents: 62
diff changeset
393
34
938ef560c7bf Initial add. Thanks, Torbj�rn!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
394
938ef560c7bf Initial add. Thanks, Torbj�rn!
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
395 /* end of aiff.c ... */