annotate decoders/au.c @ 257:7c4f6ee02cd0

Changed magic number to be bigendian.
author Ryan C. Gordon <icculus@icculus.org>
date Mon, 11 Feb 2002 08:30:23 +0000
parents c9772a9f5271
children 9828311da44b
rev   line source
213
948b62500a54 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1 /*
948b62500a54 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
2 * SDL_sound -- An abstract sound format decoding API.
948b62500a54 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
3 * Copyright (C) 2001 Ryan C. Gordon.
948b62500a54 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
4 *
948b62500a54 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
5 * This library is free software; you can redistribute it and/or
948b62500a54 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
6 * modify it under the terms of the GNU Lesser General Public
948b62500a54 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
7 * License as published by the Free Software Foundation; either
948b62500a54 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
8 * version 2.1 of the License, or (at your option) any later version.
948b62500a54 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
9 *
948b62500a54 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
10 * This library is distributed in the hope that it will be useful,
948b62500a54 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
948b62500a54 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
948b62500a54 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
13 * Lesser General Public License for more details.
948b62500a54 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
14 *
948b62500a54 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
15 * You should have received a copy of the GNU Lesser General Public
948b62500a54 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
16 * License along with this library; if not, write to the Free Software
948b62500a54 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
17 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
948b62500a54 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
18 */
948b62500a54 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
19
948b62500a54 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
20 /*
948b62500a54 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
21 * Sun/NeXT .au decoder for SDL_sound.
948b62500a54 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
22 * Formats supported: 8 and 16 bit linear PCM, 8 bit µ-law.
948b62500a54 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
23 * Files without valid header are assumed to be 8 bit µ-law, 8kHz, mono.
948b62500a54 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
24 *
948b62500a54 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
25 * Please see the file COPYING in the source's root directory.
948b62500a54 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
26 *
948b62500a54 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
27 * This file written by Mattias Engdegård. (f91-men@nada.kth.se)
948b62500a54 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
28 */
948b62500a54 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
29
948b62500a54 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
30 #if HAVE_CONFIG_H
948b62500a54 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
31 # include <config.h>
948b62500a54 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
32 #endif
948b62500a54 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
33
948b62500a54 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
34 #ifdef SOUND_SUPPORTS_AU
948b62500a54 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
35
948b62500a54 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
36 #include <stdio.h>
948b62500a54 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
37 #include <stdlib.h>
948b62500a54 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
38 #include <string.h>
948b62500a54 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
39 #include <assert.h>
948b62500a54 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
40
948b62500a54 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
41 #include "SDL_sound.h"
948b62500a54 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
42
948b62500a54 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
43 #define __SDL_SOUND_INTERNAL__
948b62500a54 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
44 #include "SDL_sound_internal.h"
948b62500a54 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
45
948b62500a54 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
46 static int AU_init(void);
948b62500a54 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
47 static void AU_quit(void);
948b62500a54 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
48 static int AU_open(Sound_Sample *sample, const char *ext);
948b62500a54 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
49 static void AU_close(Sound_Sample *sample);
948b62500a54 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
50 static Uint32 AU_read(Sound_Sample *sample);
221
c9772a9f5271 Initial implementation or stubs for rewind method. Other cleanups.
Ryan C. Gordon <icculus@icculus.org>
parents: 217
diff changeset
51 static int AU_rewind(Sound_Sample *sample);
213
948b62500a54 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
52
948b62500a54 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
53 /*
948b62500a54 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
54 * Sometimes the extension ".snd" is used for these files (mostly on the NeXT),
948b62500a54 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
55 * and the magic number comes from this. However it may clash with other
948b62500a54 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
56 * formats and is somewhat of an anachronism, so only .au is used here.
948b62500a54 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
57 */
948b62500a54 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
58 static const char *extensions_au[] = { "AU", NULL };
948b62500a54 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
59 const Sound_DecoderFunctions __Sound_DecoderFunctions_AU =
948b62500a54 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
60 {
948b62500a54 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
61 {
948b62500a54 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
62 extensions_au,
948b62500a54 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
63 "Sun/NeXT audio file format",
948b62500a54 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
64 "Mattias Engdegård <f91-men@nada.kth.se>",
948b62500a54 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
65 "http://www.icculus.org/SDL_sound/"
948b62500a54 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
66 },
948b62500a54 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
67
221
c9772a9f5271 Initial implementation or stubs for rewind method. Other cleanups.
Ryan C. Gordon <icculus@icculus.org>
parents: 217
diff changeset
68 AU_init, /* init() method */
c9772a9f5271 Initial implementation or stubs for rewind method. Other cleanups.
Ryan C. Gordon <icculus@icculus.org>
parents: 217
diff changeset
69 AU_quit, /* quit() method */
c9772a9f5271 Initial implementation or stubs for rewind method. Other cleanups.
Ryan C. Gordon <icculus@icculus.org>
parents: 217
diff changeset
70 AU_open, /* open() method */
c9772a9f5271 Initial implementation or stubs for rewind method. Other cleanups.
Ryan C. Gordon <icculus@icculus.org>
parents: 217
diff changeset
71 AU_close, /* close() method */
c9772a9f5271 Initial implementation or stubs for rewind method. Other cleanups.
Ryan C. Gordon <icculus@icculus.org>
parents: 217
diff changeset
72 AU_read, /* read() method */
c9772a9f5271 Initial implementation or stubs for rewind method. Other cleanups.
Ryan C. Gordon <icculus@icculus.org>
parents: 217
diff changeset
73 AU_rewind /* rewind() method */
213
948b62500a54 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
74 };
948b62500a54 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
75
948b62500a54 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
76 /* no init/deinit needed */
948b62500a54 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
77 static int AU_init(void)
948b62500a54 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
78 {
948b62500a54 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
79 return(1);
217
9bab949e2318 Fixed memory leak I introduced, mangled coding style some more. :)
Ryan C. Gordon <icculus@icculus.org>
parents: 213
diff changeset
80 } /* AU_init */
213
948b62500a54 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
81
948b62500a54 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
82 static void AU_quit(void)
948b62500a54 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
83 {
948b62500a54 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
84 /* no-op. */
217
9bab949e2318 Fixed memory leak I introduced, mangled coding style some more. :)
Ryan C. Gordon <icculus@icculus.org>
parents: 213
diff changeset
85 } /* AU_quit */
213
948b62500a54 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
86
948b62500a54 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
87 struct au_file_hdr
948b62500a54 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
88 {
948b62500a54 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
89 Uint32 magic;
948b62500a54 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
90 Uint32 hdr_size;
948b62500a54 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
91 Uint32 data_size;
948b62500a54 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
92 Uint32 encoding;
948b62500a54 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
93 Uint32 sample_rate;
948b62500a54 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
94 Uint32 channels;
948b62500a54 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
95 };
948b62500a54 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
96
948b62500a54 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
97 #define HDR_SIZE 24
948b62500a54 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
98
948b62500a54 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
99 enum
948b62500a54 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
100 {
948b62500a54 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
101 AU_ENC_ULAW_8 = 1, /* 8-bit ISDN µ-law */
948b62500a54 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
102 AU_ENC_LINEAR_8 = 2, /* 8-bit linear PCM */
948b62500a54 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
103 AU_ENC_LINEAR_16 = 3, /* 16-bit linear PCM */
948b62500a54 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
104
948b62500a54 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
105 /* the rest are unsupported (I have never seen them in the wild) */
948b62500a54 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
106 AU_ENC_LINEAR_24 = 4, /* 24-bit linear PCM */
948b62500a54 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
107 AU_ENC_LINEAR_32 = 5, /* 32-bit linear PCM */
948b62500a54 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
108 AU_ENC_FLOAT = 6, /* 32-bit IEEE floating point */
948b62500a54 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
109 AU_ENC_DOUBLE = 7, /* 64-bit IEEE floating point */
948b62500a54 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
110 /* more Sun formats, not supported either */
948b62500a54 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
111 AU_ENC_ADPCM_G721 = 23,
948b62500a54 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
112 AU_ENC_ADPCM_G722 = 24,
948b62500a54 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
113 AU_ENC_ADPCM_G723_3 = 25,
948b62500a54 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
114 AU_ENC_ADPCM_G723_5 = 26,
948b62500a54 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
115 AU_ENC_ALAW_8 = 27
948b62500a54 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
116 };
948b62500a54 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
117
948b62500a54 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
118 struct audec
948b62500a54 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
119 {
221
c9772a9f5271 Initial implementation or stubs for rewind method. Other cleanups.
Ryan C. Gordon <icculus@icculus.org>
parents: 217
diff changeset
120 Uint32 total;
c9772a9f5271 Initial implementation or stubs for rewind method. Other cleanups.
Ryan C. Gordon <icculus@icculus.org>
parents: 217
diff changeset
121 Uint32 remaining;
c9772a9f5271 Initial implementation or stubs for rewind method. Other cleanups.
Ryan C. Gordon <icculus@icculus.org>
parents: 217
diff changeset
122 Uint32 start_offset;
213
948b62500a54 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
123 int encoding;
948b62500a54 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
124 };
948b62500a54 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
125
948b62500a54 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
126
257
7c4f6ee02cd0 Changed magic number to be bigendian.
Ryan C. Gordon <icculus@icculus.org>
parents: 221
diff changeset
127 #define AU_MAGIC 0x2E736E64 /* ".snd", in ASCII (bigendian number) */
213
948b62500a54 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
128
948b62500a54 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
129 static int AU_open(Sound_Sample *sample, const char *ext)
948b62500a54 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
130 {
948b62500a54 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
131 Sound_SampleInternal *internal = sample->opaque;
948b62500a54 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
132 SDL_RWops *rw = internal->rw;
948b62500a54 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
133 int r, skip, hsize, i;
948b62500a54 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
134 struct au_file_hdr hdr;
948b62500a54 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
135 char c;
948b62500a54 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
136 struct audec *dec = malloc(sizeof *dec);
948b62500a54 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
137 BAIL_IF_MACRO(dec == NULL, ERR_OUT_OF_MEMORY, 0);
948b62500a54 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
138 internal->decoder_private = dec;
948b62500a54 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
139
948b62500a54 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
140 r = SDL_RWread(rw, &hdr, 1, HDR_SIZE);
948b62500a54 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
141 if (r < HDR_SIZE)
948b62500a54 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
142 {
948b62500a54 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
143 Sound_SetError("No .au file (bad header)");
948b62500a54 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
144 free(dec);
217
9bab949e2318 Fixed memory leak I introduced, mangled coding style some more. :)
Ryan C. Gordon <icculus@icculus.org>
parents: 213
diff changeset
145 return(0);
9bab949e2318 Fixed memory leak I introduced, mangled coding style some more. :)
Ryan C. Gordon <icculus@icculus.org>
parents: 213
diff changeset
146 } /* if */
213
948b62500a54 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
147
257
7c4f6ee02cd0 Changed magic number to be bigendian.
Ryan C. Gordon <icculus@icculus.org>
parents: 221
diff changeset
148 if (SDL_SwapBE32(hdr.magic) == AU_MAGIC)
213
948b62500a54 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
149 {
948b62500a54 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
150 /* valid magic */
948b62500a54 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
151 dec->encoding = SDL_SwapBE32(hdr.encoding);
948b62500a54 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
152 switch(dec->encoding)
948b62500a54 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
153 {
948b62500a54 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
154 case AU_ENC_ULAW_8:
948b62500a54 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
155 /* Convert 8-bit µ-law to 16-bit linear on the fly. This is
948b62500a54 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
156 slightly wasteful if the audio driver must convert them
948b62500a54 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
157 back, but µ-law only devices are rare (mostly _old_ Suns) */
948b62500a54 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
158 sample->actual.format = AUDIO_S16SYS;
948b62500a54 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
159 break;
948b62500a54 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
160
948b62500a54 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
161 case AU_ENC_LINEAR_8:
948b62500a54 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
162 sample->actual.format = AUDIO_S8;
948b62500a54 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
163 break;
948b62500a54 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
164
948b62500a54 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
165 case AU_ENC_LINEAR_16:
948b62500a54 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
166 sample->actual.format = AUDIO_S16MSB;
948b62500a54 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
167 break;
948b62500a54 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
168
948b62500a54 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
169 default:
948b62500a54 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
170 Sound_SetError("Unsupported .au encoding");
948b62500a54 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
171 free(dec);
948b62500a54 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
172 return 0;
217
9bab949e2318 Fixed memory leak I introduced, mangled coding style some more. :)
Ryan C. Gordon <icculus@icculus.org>
parents: 213
diff changeset
173 } /* switch */
213
948b62500a54 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
174
948b62500a54 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
175 sample->actual.rate = SDL_SwapBE32(hdr.sample_rate);
948b62500a54 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
176 sample->actual.channels = SDL_SwapBE32(hdr.channels);
948b62500a54 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
177 dec->remaining = SDL_SwapBE32(hdr.data_size);
948b62500a54 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
178 hsize = SDL_SwapBE32(hdr.hdr_size);
948b62500a54 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
179
948b62500a54 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
180 /* skip remaining part of header (input may be unseekable) */
948b62500a54 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
181 for (i = HDR_SIZE; i < hsize; i++)
948b62500a54 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
182 SDL_RWread(rw, &c, 1, 1);
217
9bab949e2318 Fixed memory leak I introduced, mangled coding style some more. :)
Ryan C. Gordon <icculus@icculus.org>
parents: 213
diff changeset
183 } /* if */
213
948b62500a54 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
184
948b62500a54 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
185 else if (__Sound_strcasecmp(ext, "au") == 0)
948b62500a54 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
186 {
948b62500a54 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
187 /*
948b62500a54 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
188 * A number of files in the wild have the .au extension but no valid
948b62500a54 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
189 * header; these are traditionally assumed to be 8kHz µ-law. Handle
948b62500a54 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
190 * them here only if the extension is recognized.
948b62500a54 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
191 */
948b62500a54 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
192
948b62500a54 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
193 SNDDBG(("AU: Invalid header, assuming raw 8kHz µ-law.\n"));
948b62500a54 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
194 /* if seeking fails, we lose 24 samples. big deal */
948b62500a54 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
195 SDL_RWseek(rw, -HDR_SIZE, SEEK_CUR);
948b62500a54 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
196 dec->encoding = AU_ENC_ULAW_8;
948b62500a54 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
197 dec->remaining = (Uint32)-1; /* no limit */
948b62500a54 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
198 sample->actual.format = AUDIO_S16SYS;
948b62500a54 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
199 sample->actual.rate = 8000;
948b62500a54 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
200 sample->actual.channels = 1;
217
9bab949e2318 Fixed memory leak I introduced, mangled coding style some more. :)
Ryan C. Gordon <icculus@icculus.org>
parents: 213
diff changeset
201 } /* else if */
9bab949e2318 Fixed memory leak I introduced, mangled coding style some more. :)
Ryan C. Gordon <icculus@icculus.org>
parents: 213
diff changeset
202
9bab949e2318 Fixed memory leak I introduced, mangled coding style some more. :)
Ryan C. Gordon <icculus@icculus.org>
parents: 213
diff changeset
203 else
9bab949e2318 Fixed memory leak I introduced, mangled coding style some more. :)
Ryan C. Gordon <icculus@icculus.org>
parents: 213
diff changeset
204 {
9bab949e2318 Fixed memory leak I introduced, mangled coding style some more. :)
Ryan C. Gordon <icculus@icculus.org>
parents: 213
diff changeset
205 SNDDBG(("AU: Not an .AU stream.\n"));
9bab949e2318 Fixed memory leak I introduced, mangled coding style some more. :)
Ryan C. Gordon <icculus@icculus.org>
parents: 213
diff changeset
206 free(dec);
9bab949e2318 Fixed memory leak I introduced, mangled coding style some more. :)
Ryan C. Gordon <icculus@icculus.org>
parents: 213
diff changeset
207 return(0);
9bab949e2318 Fixed memory leak I introduced, mangled coding style some more. :)
Ryan C. Gordon <icculus@icculus.org>
parents: 213
diff changeset
208 } /* else */
213
948b62500a54 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
209
948b62500a54 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
210 sample->flags = SOUND_SAMPLEFLAG_NONE;
221
c9772a9f5271 Initial implementation or stubs for rewind method. Other cleanups.
Ryan C. Gordon <icculus@icculus.org>
parents: 217
diff changeset
211 dec->total = dec->remaining;
c9772a9f5271 Initial implementation or stubs for rewind method. Other cleanups.
Ryan C. Gordon <icculus@icculus.org>
parents: 217
diff changeset
212 dec->start_offset = SDL_RWtell(rw);
213
948b62500a54 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
213
948b62500a54 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
214 SNDDBG(("AU: Accepting data stream.\n"));
217
9bab949e2318 Fixed memory leak I introduced, mangled coding style some more. :)
Ryan C. Gordon <icculus@icculus.org>
parents: 213
diff changeset
215 return(1);
9bab949e2318 Fixed memory leak I introduced, mangled coding style some more. :)
Ryan C. Gordon <icculus@icculus.org>
parents: 213
diff changeset
216 } /* AU_open */
213
948b62500a54 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
217
948b62500a54 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
218
948b62500a54 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
219 static void AU_close(Sound_Sample *sample)
948b62500a54 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
220 {
948b62500a54 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
221 Sound_SampleInternal *internal = sample->opaque;
948b62500a54 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
222 free(internal->decoder_private);
217
9bab949e2318 Fixed memory leak I introduced, mangled coding style some more. :)
Ryan C. Gordon <icculus@icculus.org>
parents: 213
diff changeset
223 } /* AU_close */
9bab949e2318 Fixed memory leak I introduced, mangled coding style some more. :)
Ryan C. Gordon <icculus@icculus.org>
parents: 213
diff changeset
224
213
948b62500a54 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
225
948b62500a54 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
226 /* table to convert from µ-law encoding to signed 16-bit samples,
948b62500a54 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
227 generated by a throwaway perl script */
948b62500a54 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
228 static Sint16 ulaw_to_linear[256] = {
948b62500a54 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
229 -32124,-31100,-30076,-29052,-28028,-27004,-25980,-24956,
948b62500a54 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
230 -23932,-22908,-21884,-20860,-19836,-18812,-17788,-16764,
948b62500a54 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
231 -15996,-15484,-14972,-14460,-13948,-13436,-12924,-12412,
948b62500a54 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
232 -11900,-11388,-10876,-10364, -9852, -9340, -8828, -8316,
948b62500a54 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
233 -7932, -7676, -7420, -7164, -6908, -6652, -6396, -6140,
948b62500a54 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
234 -5884, -5628, -5372, -5116, -4860, -4604, -4348, -4092,
948b62500a54 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
235 -3900, -3772, -3644, -3516, -3388, -3260, -3132, -3004,
948b62500a54 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
236 -2876, -2748, -2620, -2492, -2364, -2236, -2108, -1980,
948b62500a54 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
237 -1884, -1820, -1756, -1692, -1628, -1564, -1500, -1436,
948b62500a54 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
238 -1372, -1308, -1244, -1180, -1116, -1052, -988, -924,
948b62500a54 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
239 -876, -844, -812, -780, -748, -716, -684, -652,
948b62500a54 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
240 -620, -588, -556, -524, -492, -460, -428, -396,
948b62500a54 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
241 -372, -356, -340, -324, -308, -292, -276, -260,
948b62500a54 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
242 -244, -228, -212, -196, -180, -164, -148, -132,
948b62500a54 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
243 -120, -112, -104, -96, -88, -80, -72, -64,
948b62500a54 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
244 -56, -48, -40, -32, -24, -16, -8, 0,
948b62500a54 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
245 32124, 31100, 30076, 29052, 28028, 27004, 25980, 24956,
948b62500a54 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
246 23932, 22908, 21884, 20860, 19836, 18812, 17788, 16764,
948b62500a54 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
247 15996, 15484, 14972, 14460, 13948, 13436, 12924, 12412,
948b62500a54 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
248 11900, 11388, 10876, 10364, 9852, 9340, 8828, 8316,
948b62500a54 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
249 7932, 7676, 7420, 7164, 6908, 6652, 6396, 6140,
948b62500a54 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
250 5884, 5628, 5372, 5116, 4860, 4604, 4348, 4092,
948b62500a54 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
251 3900, 3772, 3644, 3516, 3388, 3260, 3132, 3004,
948b62500a54 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
252 2876, 2748, 2620, 2492, 2364, 2236, 2108, 1980,
948b62500a54 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
253 1884, 1820, 1756, 1692, 1628, 1564, 1500, 1436,
948b62500a54 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
254 1372, 1308, 1244, 1180, 1116, 1052, 988, 924,
948b62500a54 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
255 876, 844, 812, 780, 748, 716, 684, 652,
948b62500a54 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
256 620, 588, 556, 524, 492, 460, 428, 396,
948b62500a54 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
257 372, 356, 340, 324, 308, 292, 276, 260,
948b62500a54 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
258 244, 228, 212, 196, 180, 164, 148, 132,
948b62500a54 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
259 120, 112, 104, 96, 88, 80, 72, 64,
948b62500a54 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
260 56, 48, 40, 32, 24, 16, 8, 0
948b62500a54 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
261 };
948b62500a54 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
262
217
9bab949e2318 Fixed memory leak I introduced, mangled coding style some more. :)
Ryan C. Gordon <icculus@icculus.org>
parents: 213
diff changeset
263
213
948b62500a54 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
264 static Uint32 AU_read(Sound_Sample *sample)
948b62500a54 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
265 {
948b62500a54 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
266 int ret;
948b62500a54 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
267 Sound_SampleInternal *internal = sample->opaque;
948b62500a54 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
268 struct audec *dec = internal->decoder_private;
948b62500a54 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
269 int maxlen;
948b62500a54 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
270 Uint8 *buf;
948b62500a54 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
271
948b62500a54 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
272 maxlen = internal->buffer_size;
948b62500a54 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
273 buf = internal->buffer;
948b62500a54 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
274 if (dec->encoding == AU_ENC_ULAW_8)
948b62500a54 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
275 {
948b62500a54 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
276 /* We read µ-law samples into the second half of the buffer, so
948b62500a54 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
277 we can expand them to 16-bit samples afterwards */
948b62500a54 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
278 maxlen >>= 1;
948b62500a54 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
279 buf += maxlen;
217
9bab949e2318 Fixed memory leak I introduced, mangled coding style some more. :)
Ryan C. Gordon <icculus@icculus.org>
parents: 213
diff changeset
280 } /* if */
213
948b62500a54 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
281
221
c9772a9f5271 Initial implementation or stubs for rewind method. Other cleanups.
Ryan C. Gordon <icculus@icculus.org>
parents: 217
diff changeset
282 if (maxlen > dec->remaining)
213
948b62500a54 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
283 maxlen = dec->remaining;
948b62500a54 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
284 ret = SDL_RWread(internal->rw, buf, 1, maxlen);
948b62500a54 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
285 if (ret == 0)
948b62500a54 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
286 sample->flags |= SOUND_SAMPLEFLAG_EOF;
948b62500a54 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
287 else if (ret == -1)
948b62500a54 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
288 sample->flags |= SOUND_SAMPLEFLAG_ERROR;
948b62500a54 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
289 else
948b62500a54 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
290 {
948b62500a54 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
291 dec->remaining -= ret;
948b62500a54 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
292 if (ret < maxlen)
948b62500a54 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
293 sample->flags |= SOUND_SAMPLEFLAG_EAGAIN;
948b62500a54 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
294
948b62500a54 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
295 if (dec->encoding == AU_ENC_ULAW_8)
948b62500a54 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
296 {
948b62500a54 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
297 int i;
948b62500a54 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
298 Sint16 *dst = internal->buffer;
948b62500a54 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
299 for (i = 0; i < ret; i++)
948b62500a54 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
300 dst[i] = ulaw_to_linear[buf[i]];
948b62500a54 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
301 ret <<= 1; /* return twice as much as read */
217
9bab949e2318 Fixed memory leak I introduced, mangled coding style some more. :)
Ryan C. Gordon <icculus@icculus.org>
parents: 213
diff changeset
302 } /* if */
9bab949e2318 Fixed memory leak I introduced, mangled coding style some more. :)
Ryan C. Gordon <icculus@icculus.org>
parents: 213
diff changeset
303 } /* else */
213
948b62500a54 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
304
217
9bab949e2318 Fixed memory leak I introduced, mangled coding style some more. :)
Ryan C. Gordon <icculus@icculus.org>
parents: 213
diff changeset
305 return(ret);
9bab949e2318 Fixed memory leak I introduced, mangled coding style some more. :)
Ryan C. Gordon <icculus@icculus.org>
parents: 213
diff changeset
306 } /* AU_read */
213
948b62500a54 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
307
221
c9772a9f5271 Initial implementation or stubs for rewind method. Other cleanups.
Ryan C. Gordon <icculus@icculus.org>
parents: 217
diff changeset
308
c9772a9f5271 Initial implementation or stubs for rewind method. Other cleanups.
Ryan C. Gordon <icculus@icculus.org>
parents: 217
diff changeset
309 static int AU_rewind(Sound_Sample *sample)
c9772a9f5271 Initial implementation or stubs for rewind method. Other cleanups.
Ryan C. Gordon <icculus@icculus.org>
parents: 217
diff changeset
310 {
c9772a9f5271 Initial implementation or stubs for rewind method. Other cleanups.
Ryan C. Gordon <icculus@icculus.org>
parents: 217
diff changeset
311 Sound_SampleInternal *internal = (Sound_SampleInternal *) sample->opaque;
c9772a9f5271 Initial implementation or stubs for rewind method. Other cleanups.
Ryan C. Gordon <icculus@icculus.org>
parents: 217
diff changeset
312 struct audec *dec = (struct audec *) internal->decoder_private;
c9772a9f5271 Initial implementation or stubs for rewind method. Other cleanups.
Ryan C. Gordon <icculus@icculus.org>
parents: 217
diff changeset
313 int rc = SDL_RWseek(internal->rw, dec->start_offset, SEEK_SET);
c9772a9f5271 Initial implementation or stubs for rewind method. Other cleanups.
Ryan C. Gordon <icculus@icculus.org>
parents: 217
diff changeset
314 BAIL_IF_MACRO(rc != dec->start_offset, ERR_IO_ERROR, 0);
c9772a9f5271 Initial implementation or stubs for rewind method. Other cleanups.
Ryan C. Gordon <icculus@icculus.org>
parents: 217
diff changeset
315 dec->remaining = dec->total;
c9772a9f5271 Initial implementation or stubs for rewind method. Other cleanups.
Ryan C. Gordon <icculus@icculus.org>
parents: 217
diff changeset
316 return(1);
c9772a9f5271 Initial implementation or stubs for rewind method. Other cleanups.
Ryan C. Gordon <icculus@icculus.org>
parents: 217
diff changeset
317 } /* AU_rewind */
c9772a9f5271 Initial implementation or stubs for rewind method. Other cleanups.
Ryan C. Gordon <icculus@icculus.org>
parents: 217
diff changeset
318
213
948b62500a54 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
319 #endif /* SOUND_SUPPORTS_AU */
948b62500a54 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
320