annotate decoders/flac.c @ 507:7f11a82e918e stable-1.0

Whoops, didn't actually fix the gcc4 warnings (backport from devbranch).
author Ryan C. Gordon <icculus@icculus.org>
date Sat, 17 Dec 2005 18:50:17 +0000
parents 30f96c853462
children c66080364dff c5f184b4b2cd
rev   line source
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1 /*
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2 * SDL_sound -- An abstract sound format decoding API.
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3 * Copyright (C) 2001 Ryan C. Gordon.
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4 *
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5 * This library is free software; you can redistribute it and/or
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6 * modify it under the terms of the GNU Lesser General Public
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7 * License as published by the Free Software Foundation; either
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8 * version 2.1 of the License, or (at your option) any later version.
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9 *
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10 * This library is distributed in the hope that it will be useful,
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11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
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12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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13 * Lesser General Public License for more details.
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14 *
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15 * You should have received a copy of the GNU Lesser General Public
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16 * License along with this library; if not, write to the Free Software
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17 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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18 */
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19
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20 /*
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21 * FLAC decoder for SDL_sound.
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22 *
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23 * This driver handles FLAC audio, that is to say the Free Lossless Audio
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24 * Codec. It depends on libFLAC for decoding, which can be grabbed from:
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25 * http://flac.sourceforge.net
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26 *
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27 * Please see the file COPYING in the source's root directory.
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28 *
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29 * This file written by Torbjörn Andersson. (d91tan@Update.UU.SE)
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30 */
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31
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32 #if HAVE_CONFIG_H
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33 # include <config.h>
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34 #endif
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35
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36 #ifdef SOUND_SUPPORTS_FLAC
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37
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38 #include <stdio.h>
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39 #include <stdlib.h>
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40 #include <string.h>
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41
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42 #include "SDL_sound.h"
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43
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44 #define __SDL_SOUND_INTERNAL__
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45 #include "SDL_sound_internal.h"
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46
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47 #include <FLAC/seekable_stream_decoder.h>
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48
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49 #define D_END_OF_STREAM FLAC__SEEKABLE_STREAM_DECODER_END_OF_STREAM
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50
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51 #define d_new() FLAC__seekable_stream_decoder_new()
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52 #define d_init(x) FLAC__seekable_stream_decoder_init(x)
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53 #define d_process_metadata(x) FLAC__seekable_stream_decoder_process_until_end_of_metadata(x)
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54 #define d_process_one_frame(x) FLAC__seekable_stream_decoder_process_single(x)
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55 #define d_get_state(x) FLAC__seekable_stream_decoder_get_state(x)
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56 #define d_finish(x) FLAC__seekable_stream_decoder_finish(x)
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57 #define d_delete(x) FLAC__seekable_stream_decoder_delete(x)
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58 #define d_set_read_callback(x, y) FLAC__seekable_stream_decoder_set_read_callback(x, y)
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59 #define d_set_write_callback(x, y) FLAC__seekable_stream_decoder_set_write_callback(x, y)
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60 #define d_set_metadata_callback(x, y) FLAC__seekable_stream_decoder_set_metadata_callback(x, y)
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61 #define d_set_error_callback(x, y) FLAC__seekable_stream_decoder_set_error_callback(x, y)
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62 #define d_set_client_data(x, y) FLAC__seekable_stream_decoder_set_client_data(x, y)
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63
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64 typedef FLAC__SeekableStreamDecoder decoder_t;
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65 typedef FLAC__SeekableStreamDecoderReadStatus d_read_status_t;
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66
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67 #define D_SEEK_STATUS_OK FLAC__SEEKABLE_STREAM_DECODER_SEEK_STATUS_OK
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68 #define D_SEEK_STATUS_ERROR FLAC__SEEKABLE_STREAM_DECODER_SEEK_STATUS_ERROR
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69 #define D_TELL_STATUS_OK FLAC__SEEKABLE_STREAM_DECODER_TELL_STATUS_OK
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70 #define D_TELL_STATUS_ERROR FLAC__SEEKABLE_STREAM_DECODER_TELL_STATUS_ERROR
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71 #define D_LENGTH_STATUS_OK FLAC__SEEKABLE_STREAM_DECODER_LENGTH_STATUS_OK
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72 #define D_LENGTH_STATUS_ERROR FLAC__SEEKABLE_STREAM_DECODER_LENGTH_STATUS_ERROR
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73
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74 #define d_set_seek_callback(x, y) FLAC__seekable_stream_decoder_set_seek_callback(x, y)
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75 #define d_set_tell_callback(x, y) FLAC__seekable_stream_decoder_set_tell_callback(x, y)
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76 #define d_set_length_callback(x, y) FLAC__seekable_stream_decoder_set_length_callback(x, y)
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77 #define d_set_eof_callback(x, y) FLAC__seekable_stream_decoder_set_eof_callback(x, y)
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78 #define d_seek_absolute(x, y) FLAC__seekable_stream_decoder_seek_absolute(x, y)
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79
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80 typedef FLAC__SeekableStreamDecoderSeekStatus d_seek_status_t;
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81 typedef FLAC__SeekableStreamDecoderTellStatus d_tell_status_t;
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82 typedef FLAC__SeekableStreamDecoderLengthStatus d_length_status_t;
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83
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84 #define D_WRITE_CONTINUE FLAC__STREAM_DECODER_WRITE_STATUS_CONTINUE
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85 #define D_READ_END_OF_STREAM FLAC__STREAM_DECODER_READ_STATUS_END_OF_STREAM
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86 #define D_READ_ABORT FLAC__STREAM_DECODER_READ_STATUS_ABORT
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87 #define D_READ_CONTINUE FLAC__STREAM_DECODER_READ_STATUS_CONTINUE
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88
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89 #define d_error_status_string FLAC__StreamDecoderErrorStatusString
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90
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91 typedef FLAC__StreamDecoderErrorStatus d_error_status_t;
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92 typedef FLAC__StreamMetadata d_metadata_t;
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93 typedef FLAC__StreamDecoderWriteStatus d_write_status_t;
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94
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95
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96 static int FLAC_init(void);
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97 static void FLAC_quit(void);
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98 static int FLAC_open(Sound_Sample *sample, const char *ext);
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99 static void FLAC_close(Sound_Sample *sample);
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100 static Uint32 FLAC_read(Sound_Sample *sample);
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101 static int FLAC_rewind(Sound_Sample *sample);
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102 static int FLAC_seek(Sound_Sample *sample, Uint32 ms);
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103
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104 static const char *extensions_flac[] = { "FLAC", "FLA", NULL };
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105
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106 const Sound_DecoderFunctions __Sound_DecoderFunctions_FLAC =
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107 {
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108 {
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109 extensions_flac,
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110 "Free Lossless Audio Codec",
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111 "Torbjörn Andersson <d91tan@Update.UU.SE>",
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112 "http://flac.sourceforge.net/"
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113 },
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114
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115 FLAC_init, /* init() method */
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116 FLAC_quit, /* quit() method */
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117 FLAC_open, /* open() method */
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118 FLAC_close, /* close() method */
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119 FLAC_read, /* read() method */
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120 FLAC_rewind, /* rewind() method */
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121 FLAC_seek /* seek() method */
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122 };
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123
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124 /* This is what we store in our internal->decoder_private field. */
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125 typedef struct
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126 {
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127 decoder_t *decoder;
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128 SDL_RWops *rw;
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129 Sound_Sample *sample;
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130 Uint32 frame_size;
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131 Uint8 is_flac;
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132 Uint32 stream_length;
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133 } flac_t;
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134
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135
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136 static void free_flac(flac_t *f)
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137 {
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138 d_finish(f->decoder);
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139 d_delete(f->decoder);
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140 free(f);
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141 } /* free_flac */
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142
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143
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144 static d_read_status_t read_callback(
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145 const decoder_t *decoder, FLAC__byte buffer[],
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146 unsigned int *bytes, void *client_data)
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147 {
72ff7d3a25b6 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
148 flac_t *f = (flac_t *) client_data;
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Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
149 Uint32 retval;
72ff7d3a25b6 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
150
72ff7d3a25b6 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
151 retval = SDL_RWread(f->rw, (Uint8 *) buffer, 1, *bytes);
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Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
152
72ff7d3a25b6 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
153 if (retval == 0)
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Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
154 {
72ff7d3a25b6 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
155 *bytes = 0;
72ff7d3a25b6 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
156 f->sample->flags |= SOUND_SAMPLEFLAG_EOF;
312
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Ryan C. Gordon <icculus@icculus.org>
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diff changeset
157 return(D_READ_END_OF_STREAM);
155
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Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
158 } /* if */
72ff7d3a25b6 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
159
72ff7d3a25b6 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
160 if (retval == -1)
72ff7d3a25b6 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
161 {
72ff7d3a25b6 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
162 *bytes = 0;
72ff7d3a25b6 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
163 f->sample->flags |= SOUND_SAMPLEFLAG_ERROR;
312
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Ryan C. Gordon <icculus@icculus.org>
parents: 306
diff changeset
164 return(D_READ_ABORT);
155
72ff7d3a25b6 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
165 } /* if */
72ff7d3a25b6 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
166
72ff7d3a25b6 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
167 if (retval < *bytes)
72ff7d3a25b6 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
168 {
72ff7d3a25b6 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
169 *bytes = retval;
72ff7d3a25b6 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
170 f->sample->flags |= SOUND_SAMPLEFLAG_EAGAIN;
72ff7d3a25b6 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
171 } /* if */
72ff7d3a25b6 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
172
312
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Ryan C. Gordon <icculus@icculus.org>
parents: 306
diff changeset
173 return(D_READ_CONTINUE);
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Ryan C. Gordon <icculus@icculus.org>
parents: 306
diff changeset
174 } /* read_callback */
155
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Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
175
72ff7d3a25b6 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
176
312
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Ryan C. Gordon <icculus@icculus.org>
parents: 306
diff changeset
177 static d_write_status_t write_callback(
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Ryan C. Gordon <icculus@icculus.org>
parents: 306
diff changeset
178 const decoder_t *decoder, const FLAC__Frame *frame,
393
b12c4483815e Handles all versions of libFLAC up to version 1.0.3, now.
Ryan C. Gordon <icculus@icculus.org>
parents: 387
diff changeset
179 const FLAC__int32 * const buffer[],
b12c4483815e Handles all versions of libFLAC up to version 1.0.3, now.
Ryan C. Gordon <icculus@icculus.org>
parents: 387
diff changeset
180 void *client_data)
155
72ff7d3a25b6 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
181 {
72ff7d3a25b6 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
182 flac_t *f = (flac_t *) client_data;
72ff7d3a25b6 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
183 Uint32 i, j;
166
d8904267d23c Cleanups, fixes and enhancements by Torbj�rn Andersson.
Ryan C. Gordon <icculus@icculus.org>
parents: 164
diff changeset
184 Uint32 sample;
155
72ff7d3a25b6 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
185 Uint8 *dst;
72ff7d3a25b6 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
186
72ff7d3a25b6 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
187 f->frame_size = frame->header.channels * frame->header.blocksize
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Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
188 * frame->header.bits_per_sample / 8;
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Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
189
72ff7d3a25b6 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
190 if (f->frame_size > f->sample->buffer_size)
72ff7d3a25b6 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
191 Sound_SetBufferSize(f->sample, f->frame_size);
72ff7d3a25b6 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
192
72ff7d3a25b6 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
193 dst = f->sample->buffer;
72ff7d3a25b6 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
194
166
d8904267d23c Cleanups, fixes and enhancements by Torbj�rn Andersson.
Ryan C. Gordon <icculus@icculus.org>
parents: 164
diff changeset
195 /* If the sample is neither exactly 8-bit nor 16-bit, it will have to
d8904267d23c Cleanups, fixes and enhancements by Torbj�rn Andersson.
Ryan C. Gordon <icculus@icculus.org>
parents: 164
diff changeset
196 * be converted. Unfortunately the buffer is read-only, so we either
d8904267d23c Cleanups, fixes and enhancements by Torbj�rn Andersson.
Ryan C. Gordon <icculus@icculus.org>
parents: 164
diff changeset
197 * have to check for each sample, or make a copy of the buffer. I'm
d8904267d23c Cleanups, fixes and enhancements by Torbj�rn Andersson.
Ryan C. Gordon <icculus@icculus.org>
parents: 164
diff changeset
198 * not sure which way is best, so I've arbitrarily picked the former.
d8904267d23c Cleanups, fixes and enhancements by Torbj�rn Andersson.
Ryan C. Gordon <icculus@icculus.org>
parents: 164
diff changeset
199 */
d8904267d23c Cleanups, fixes and enhancements by Torbj�rn Andersson.
Ryan C. Gordon <icculus@icculus.org>
parents: 164
diff changeset
200 if (f->sample->actual.format == AUDIO_S8)
155
72ff7d3a25b6 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
201 {
72ff7d3a25b6 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
202 for (i = 0; i < frame->header.blocksize; i++)
72ff7d3a25b6 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
203 for (j = 0; j < frame->header.channels; j++)
166
d8904267d23c Cleanups, fixes and enhancements by Torbj�rn Andersson.
Ryan C. Gordon <icculus@icculus.org>
parents: 164
diff changeset
204 {
d8904267d23c Cleanups, fixes and enhancements by Torbj�rn Andersson.
Ryan C. Gordon <icculus@icculus.org>
parents: 164
diff changeset
205 sample = buffer[j][i];
d8904267d23c Cleanups, fixes and enhancements by Torbj�rn Andersson.
Ryan C. Gordon <icculus@icculus.org>
parents: 164
diff changeset
206 if (frame->header.bits_per_sample < 8)
d8904267d23c Cleanups, fixes and enhancements by Torbj�rn Andersson.
Ryan C. Gordon <icculus@icculus.org>
parents: 164
diff changeset
207 sample <<= (8 - frame->header.bits_per_sample);
d8904267d23c Cleanups, fixes and enhancements by Torbj�rn Andersson.
Ryan C. Gordon <icculus@icculus.org>
parents: 164
diff changeset
208 *dst++ = sample & 0x00ff;
d8904267d23c Cleanups, fixes and enhancements by Torbj�rn Andersson.
Ryan C. Gordon <icculus@icculus.org>
parents: 164
diff changeset
209 } /* for */
155
72ff7d3a25b6 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
210 } /* if */
72ff7d3a25b6 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
211 else
72ff7d3a25b6 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
212 {
72ff7d3a25b6 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
213 for (i = 0; i < frame->header.blocksize; i++)
72ff7d3a25b6 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
214 for (j = 0; j < frame->header.channels; j++)
72ff7d3a25b6 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
215 {
166
d8904267d23c Cleanups, fixes and enhancements by Torbj�rn Andersson.
Ryan C. Gordon <icculus@icculus.org>
parents: 164
diff changeset
216 sample = buffer[j][i];
d8904267d23c Cleanups, fixes and enhancements by Torbj�rn Andersson.
Ryan C. Gordon <icculus@icculus.org>
parents: 164
diff changeset
217 if (frame->header.bits_per_sample < 16)
d8904267d23c Cleanups, fixes and enhancements by Torbj�rn Andersson.
Ryan C. Gordon <icculus@icculus.org>
parents: 164
diff changeset
218 sample <<= (16 - frame->header.bits_per_sample);
d8904267d23c Cleanups, fixes and enhancements by Torbj�rn Andersson.
Ryan C. Gordon <icculus@icculus.org>
parents: 164
diff changeset
219 else if (frame->header.bits_per_sample > 16)
d8904267d23c Cleanups, fixes and enhancements by Torbj�rn Andersson.
Ryan C. Gordon <icculus@icculus.org>
parents: 164
diff changeset
220 sample >>= (frame->header.bits_per_sample - 16);
d8904267d23c Cleanups, fixes and enhancements by Torbj�rn Andersson.
Ryan C. Gordon <icculus@icculus.org>
parents: 164
diff changeset
221 *dst++ = (sample & 0xff00) >> 8;
d8904267d23c Cleanups, fixes and enhancements by Torbj�rn Andersson.
Ryan C. Gordon <icculus@icculus.org>
parents: 164
diff changeset
222 *dst++ = sample & 0x00ff;
155
72ff7d3a25b6 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
223 } /* for */
72ff7d3a25b6 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
224 } /* else */
72ff7d3a25b6 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
225
312
498240aa76f1 Seek implementations.
Ryan C. Gordon <icculus@icculus.org>
parents: 306
diff changeset
226 return(D_WRITE_CONTINUE);
498240aa76f1 Seek implementations.
Ryan C. Gordon <icculus@icculus.org>
parents: 306
diff changeset
227 } /* write_callback */
155
72ff7d3a25b6 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
228
72ff7d3a25b6 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
229
312
498240aa76f1 Seek implementations.
Ryan C. Gordon <icculus@icculus.org>
parents: 306
diff changeset
230 static void metadata_callback(
498240aa76f1 Seek implementations.
Ryan C. Gordon <icculus@icculus.org>
parents: 306
diff changeset
231 const decoder_t *decoder,
498240aa76f1 Seek implementations.
Ryan C. Gordon <icculus@icculus.org>
parents: 306
diff changeset
232 const d_metadata_t *metadata,
155
72ff7d3a25b6 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
233 void *client_data)
72ff7d3a25b6 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
234 {
72ff7d3a25b6 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
235 flac_t *f = (flac_t *) client_data;
312
498240aa76f1 Seek implementations.
Ryan C. Gordon <icculus@icculus.org>
parents: 306
diff changeset
236
155
72ff7d3a25b6 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
237 SNDDBG(("FLAC: Metadata callback.\n"));
72ff7d3a25b6 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
238
166
d8904267d23c Cleanups, fixes and enhancements by Torbj�rn Andersson.
Ryan C. Gordon <icculus@icculus.org>
parents: 164
diff changeset
239 /* There are several kinds of metadata, but STREAMINFO is the only
d8904267d23c Cleanups, fixes and enhancements by Torbj�rn Andersson.
Ryan C. Gordon <icculus@icculus.org>
parents: 164
diff changeset
240 * one that always has to be there.
d8904267d23c Cleanups, fixes and enhancements by Torbj�rn Andersson.
Ryan C. Gordon <icculus@icculus.org>
parents: 164
diff changeset
241 */
155
72ff7d3a25b6 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
242 if (metadata->type == FLAC__METADATA_TYPE_STREAMINFO)
72ff7d3a25b6 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
243 {
72ff7d3a25b6 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
244 SNDDBG(("FLAC: Metadata is streaminfo.\n"));
166
d8904267d23c Cleanups, fixes and enhancements by Torbj�rn Andersson.
Ryan C. Gordon <icculus@icculus.org>
parents: 164
diff changeset
245
d8904267d23c Cleanups, fixes and enhancements by Torbj�rn Andersson.
Ryan C. Gordon <icculus@icculus.org>
parents: 164
diff changeset
246 f->is_flac = 1;
155
72ff7d3a25b6 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
247 f->sample->actual.channels = metadata->data.stream_info.channels;
72ff7d3a25b6 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
248 f->sample->actual.rate = metadata->data.stream_info.sample_rate;
72ff7d3a25b6 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
249
166
d8904267d23c Cleanups, fixes and enhancements by Torbj�rn Andersson.
Ryan C. Gordon <icculus@icculus.org>
parents: 164
diff changeset
250 if (metadata->data.stream_info.bits_per_sample > 8)
d8904267d23c Cleanups, fixes and enhancements by Torbj�rn Andersson.
Ryan C. Gordon <icculus@icculus.org>
parents: 164
diff changeset
251 f->sample->actual.format = AUDIO_S16MSB;
d8904267d23c Cleanups, fixes and enhancements by Torbj�rn Andersson.
Ryan C. Gordon <icculus@icculus.org>
parents: 164
diff changeset
252 else
d8904267d23c Cleanups, fixes and enhancements by Torbj�rn Andersson.
Ryan C. Gordon <icculus@icculus.org>
parents: 164
diff changeset
253 f->sample->actual.format = AUDIO_S8;
155
72ff7d3a25b6 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
254 } /* if */
312
498240aa76f1 Seek implementations.
Ryan C. Gordon <icculus@icculus.org>
parents: 306
diff changeset
255 } /* metadata_callback */
155
72ff7d3a25b6 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
256
72ff7d3a25b6 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
257
312
498240aa76f1 Seek implementations.
Ryan C. Gordon <icculus@icculus.org>
parents: 306
diff changeset
258 static void error_callback(
498240aa76f1 Seek implementations.
Ryan C. Gordon <icculus@icculus.org>
parents: 306
diff changeset
259 const decoder_t *decoder,
498240aa76f1 Seek implementations.
Ryan C. Gordon <icculus@icculus.org>
parents: 306
diff changeset
260 d_error_status_t status,
155
72ff7d3a25b6 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
261 void *client_data)
72ff7d3a25b6 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
262 {
72ff7d3a25b6 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
263 flac_t *f = (flac_t *) client_data;
164
77482005beb6 Now includes FLAC/stream_decoder.h instead of FLAC/all.h. More robust
Ryan C. Gordon <icculus@icculus.org>
parents: 155
diff changeset
264
387
fb519e6028e3 Changed all the Sound_SetError() calls to __Sound_SetError (or BAIL*_MACRO)
Ryan C. Gordon <icculus@icculus.org>
parents: 377
diff changeset
265 __Sound_SetError(d_error_status_string[status]);
155
72ff7d3a25b6 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
266 f->sample->flags |= SOUND_SAMPLEFLAG_ERROR;
312
498240aa76f1 Seek implementations.
Ryan C. Gordon <icculus@icculus.org>
parents: 306
diff changeset
267 } /* error_callback */
498240aa76f1 Seek implementations.
Ryan C. Gordon <icculus@icculus.org>
parents: 306
diff changeset
268
498240aa76f1 Seek implementations.
Ryan C. Gordon <icculus@icculus.org>
parents: 306
diff changeset
269
498240aa76f1 Seek implementations.
Ryan C. Gordon <icculus@icculus.org>
parents: 306
diff changeset
270 static d_seek_status_t seek_callback(
498240aa76f1 Seek implementations.
Ryan C. Gordon <icculus@icculus.org>
parents: 306
diff changeset
271 const decoder_t *decoder,
498240aa76f1 Seek implementations.
Ryan C. Gordon <icculus@icculus.org>
parents: 306
diff changeset
272 FLAC__uint64 absolute_byte_offset,
498240aa76f1 Seek implementations.
Ryan C. Gordon <icculus@icculus.org>
parents: 306
diff changeset
273 void *client_data)
498240aa76f1 Seek implementations.
Ryan C. Gordon <icculus@icculus.org>
parents: 306
diff changeset
274 {
498240aa76f1 Seek implementations.
Ryan C. Gordon <icculus@icculus.org>
parents: 306
diff changeset
275 flac_t *f = (flac_t *) client_data;
498240aa76f1 Seek implementations.
Ryan C. Gordon <icculus@icculus.org>
parents: 306
diff changeset
276
498240aa76f1 Seek implementations.
Ryan C. Gordon <icculus@icculus.org>
parents: 306
diff changeset
277 if (SDL_RWseek(f->rw, absolute_byte_offset, SEEK_SET) >= 0)
498240aa76f1 Seek implementations.
Ryan C. Gordon <icculus@icculus.org>
parents: 306
diff changeset
278 {
498240aa76f1 Seek implementations.
Ryan C. Gordon <icculus@icculus.org>
parents: 306
diff changeset
279 return(D_SEEK_STATUS_OK);
498240aa76f1 Seek implementations.
Ryan C. Gordon <icculus@icculus.org>
parents: 306
diff changeset
280 } /* if */
498240aa76f1 Seek implementations.
Ryan C. Gordon <icculus@icculus.org>
parents: 306
diff changeset
281
498240aa76f1 Seek implementations.
Ryan C. Gordon <icculus@icculus.org>
parents: 306
diff changeset
282 return(D_SEEK_STATUS_ERROR);
498240aa76f1 Seek implementations.
Ryan C. Gordon <icculus@icculus.org>
parents: 306
diff changeset
283 } /* seek_callback*/
498240aa76f1 Seek implementations.
Ryan C. Gordon <icculus@icculus.org>
parents: 306
diff changeset
284
498240aa76f1 Seek implementations.
Ryan C. Gordon <icculus@icculus.org>
parents: 306
diff changeset
285
498240aa76f1 Seek implementations.
Ryan C. Gordon <icculus@icculus.org>
parents: 306
diff changeset
286 static d_tell_status_t tell_callback(
498240aa76f1 Seek implementations.
Ryan C. Gordon <icculus@icculus.org>
parents: 306
diff changeset
287 const decoder_t *decoder,
498240aa76f1 Seek implementations.
Ryan C. Gordon <icculus@icculus.org>
parents: 306
diff changeset
288 FLAC__uint64 *absolute_byte_offset,
498240aa76f1 Seek implementations.
Ryan C. Gordon <icculus@icculus.org>
parents: 306
diff changeset
289 void *client_data)
498240aa76f1 Seek implementations.
Ryan C. Gordon <icculus@icculus.org>
parents: 306
diff changeset
290 {
498240aa76f1 Seek implementations.
Ryan C. Gordon <icculus@icculus.org>
parents: 306
diff changeset
291 flac_t *f = (flac_t *) client_data;
400
9d0b5ec9cc26 FIXME cleanups.
Ryan C. Gordon <icculus@icculus.org>
parents: 393
diff changeset
292 int pos;
312
498240aa76f1 Seek implementations.
Ryan C. Gordon <icculus@icculus.org>
parents: 306
diff changeset
293
498240aa76f1 Seek implementations.
Ryan C. Gordon <icculus@icculus.org>
parents: 306
diff changeset
294 pos = SDL_RWtell(f->rw);
498240aa76f1 Seek implementations.
Ryan C. Gordon <icculus@icculus.org>
parents: 306
diff changeset
295
498240aa76f1 Seek implementations.
Ryan C. Gordon <icculus@icculus.org>
parents: 306
diff changeset
296 if (pos < 0)
498240aa76f1 Seek implementations.
Ryan C. Gordon <icculus@icculus.org>
parents: 306
diff changeset
297 {
498240aa76f1 Seek implementations.
Ryan C. Gordon <icculus@icculus.org>
parents: 306
diff changeset
298 return(D_TELL_STATUS_ERROR);
498240aa76f1 Seek implementations.
Ryan C. Gordon <icculus@icculus.org>
parents: 306
diff changeset
299 } /* if */
155
72ff7d3a25b6 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
300
312
498240aa76f1 Seek implementations.
Ryan C. Gordon <icculus@icculus.org>
parents: 306
diff changeset
301 *absolute_byte_offset = pos;
498240aa76f1 Seek implementations.
Ryan C. Gordon <icculus@icculus.org>
parents: 306
diff changeset
302 return(D_TELL_STATUS_OK);
498240aa76f1 Seek implementations.
Ryan C. Gordon <icculus@icculus.org>
parents: 306
diff changeset
303 } /* tell_callback */
498240aa76f1 Seek implementations.
Ryan C. Gordon <icculus@icculus.org>
parents: 306
diff changeset
304
498240aa76f1 Seek implementations.
Ryan C. Gordon <icculus@icculus.org>
parents: 306
diff changeset
305
498240aa76f1 Seek implementations.
Ryan C. Gordon <icculus@icculus.org>
parents: 306
diff changeset
306 static d_length_status_t length_callback(
498240aa76f1 Seek implementations.
Ryan C. Gordon <icculus@icculus.org>
parents: 306
diff changeset
307 const decoder_t *decoder,
498240aa76f1 Seek implementations.
Ryan C. Gordon <icculus@icculus.org>
parents: 306
diff changeset
308 FLAC__uint64 *stream_length,
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Ryan C. Gordon <icculus@icculus.org>
parents: 306
diff changeset
309 void *client_data)
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Ryan C. Gordon <icculus@icculus.org>
parents: 306
diff changeset
310 {
498240aa76f1 Seek implementations.
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parents: 306
diff changeset
311 flac_t *f = (flac_t *) client_data;
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parents: 306
diff changeset
312
498240aa76f1 Seek implementations.
Ryan C. Gordon <icculus@icculus.org>
parents: 306
diff changeset
313 if (f->sample->flags & SOUND_SAMPLEFLAG_CANSEEK)
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Ryan C. Gordon <icculus@icculus.org>
parents: 306
diff changeset
314 {
498240aa76f1 Seek implementations.
Ryan C. Gordon <icculus@icculus.org>
parents: 306
diff changeset
315 *stream_length = f->stream_length;
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Ryan C. Gordon <icculus@icculus.org>
parents: 306
diff changeset
316 return(D_LENGTH_STATUS_OK);
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parents: 306
diff changeset
317 } /* if */
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parents: 306
diff changeset
318
498240aa76f1 Seek implementations.
Ryan C. Gordon <icculus@icculus.org>
parents: 306
diff changeset
319 return(D_LENGTH_STATUS_ERROR);
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Ryan C. Gordon <icculus@icculus.org>
parents: 306
diff changeset
320 } /* length_callback */
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Ryan C. Gordon <icculus@icculus.org>
parents: 306
diff changeset
321
498240aa76f1 Seek implementations.
Ryan C. Gordon <icculus@icculus.org>
parents: 306
diff changeset
322
498240aa76f1 Seek implementations.
Ryan C. Gordon <icculus@icculus.org>
parents: 306
diff changeset
323 static FLAC__bool eof_callback(
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Ryan C. Gordon <icculus@icculus.org>
parents: 306
diff changeset
324 const decoder_t *decoder,
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Ryan C. Gordon <icculus@icculus.org>
parents: 306
diff changeset
325 void *client_data)
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Ryan C. Gordon <icculus@icculus.org>
parents: 306
diff changeset
326 {
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Ryan C. Gordon <icculus@icculus.org>
parents: 306
diff changeset
327 flac_t *f = (flac_t *) client_data;
400
9d0b5ec9cc26 FIXME cleanups.
Ryan C. Gordon <icculus@icculus.org>
parents: 393
diff changeset
328 int pos;
312
498240aa76f1 Seek implementations.
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parents: 306
diff changeset
329
498240aa76f1 Seek implementations.
Ryan C. Gordon <icculus@icculus.org>
parents: 306
diff changeset
330 /* Maybe we could check for SOUND_SAMPLEFLAG_EOF here instead? */
498240aa76f1 Seek implementations.
Ryan C. Gordon <icculus@icculus.org>
parents: 306
diff changeset
331 pos = SDL_RWtell(f->rw);
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Ryan C. Gordon <icculus@icculus.org>
parents: 306
diff changeset
332
498240aa76f1 Seek implementations.
Ryan C. Gordon <icculus@icculus.org>
parents: 306
diff changeset
333 if (pos >= 0 && pos >= f->stream_length)
498240aa76f1 Seek implementations.
Ryan C. Gordon <icculus@icculus.org>
parents: 306
diff changeset
334 {
498240aa76f1 Seek implementations.
Ryan C. Gordon <icculus@icculus.org>
parents: 306
diff changeset
335 return(true);
498240aa76f1 Seek implementations.
Ryan C. Gordon <icculus@icculus.org>
parents: 306
diff changeset
336 } /* if */
498240aa76f1 Seek implementations.
Ryan C. Gordon <icculus@icculus.org>
parents: 306
diff changeset
337
498240aa76f1 Seek implementations.
Ryan C. Gordon <icculus@icculus.org>
parents: 306
diff changeset
338 return(false);
498240aa76f1 Seek implementations.
Ryan C. Gordon <icculus@icculus.org>
parents: 306
diff changeset
339 } /* eof_callback */
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Ryan C. Gordon <icculus@icculus.org>
parents: 306
diff changeset
340
155
72ff7d3a25b6 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
341
72ff7d3a25b6 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
342 static int FLAC_init(void)
72ff7d3a25b6 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
343 {
72ff7d3a25b6 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
344 return(1); /* always succeeds. */
72ff7d3a25b6 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
345 } /* FLAC_init */
72ff7d3a25b6 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
346
72ff7d3a25b6 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
347
72ff7d3a25b6 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
348 static void FLAC_quit(void)
72ff7d3a25b6 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
349 {
72ff7d3a25b6 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
350 /* it's a no-op. */
72ff7d3a25b6 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
351 } /* FLAC_quit */
72ff7d3a25b6 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
352
72ff7d3a25b6 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
353
182
3849438b735e Checks magic number again, unless the file extension is recognized.
Ryan C. Gordon <icculus@icculus.org>
parents: 166
diff changeset
354 #define FLAC_MAGIC 0x43614C66 /* "fLaC" in ASCII. */
3849438b735e Checks magic number again, unless the file extension is recognized.
Ryan C. Gordon <icculus@icculus.org>
parents: 166
diff changeset
355
155
72ff7d3a25b6 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
356 static int FLAC_open(Sound_Sample *sample, const char *ext)
72ff7d3a25b6 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
357 {
72ff7d3a25b6 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
358 Sound_SampleInternal *internal = (Sound_SampleInternal *) sample->opaque;
72ff7d3a25b6 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
359 SDL_RWops *rw = internal->rw;
312
498240aa76f1 Seek implementations.
Ryan C. Gordon <icculus@icculus.org>
parents: 306
diff changeset
360 decoder_t *decoder;
155
72ff7d3a25b6 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
361 flac_t *f;
166
d8904267d23c Cleanups, fixes and enhancements by Torbj�rn Andersson.
Ryan C. Gordon <icculus@icculus.org>
parents: 164
diff changeset
362 int i;
182
3849438b735e Checks magic number again, unless the file extension is recognized.
Ryan C. Gordon <icculus@icculus.org>
parents: 166
diff changeset
363 int has_extension = 0;
312
498240aa76f1 Seek implementations.
Ryan C. Gordon <icculus@icculus.org>
parents: 306
diff changeset
364 Uint32 pos;
182
3849438b735e Checks magic number again, unless the file extension is recognized.
Ryan C. Gordon <icculus@icculus.org>
parents: 166
diff changeset
365
3849438b735e Checks magic number again, unless the file extension is recognized.
Ryan C. Gordon <icculus@icculus.org>
parents: 166
diff changeset
366 /*
3849438b735e Checks magic number again, unless the file extension is recognized.
Ryan C. Gordon <icculus@icculus.org>
parents: 166
diff changeset
367 * If the extension is "flac", we'll believe that this is really meant
3849438b735e Checks magic number again, unless the file extension is recognized.
Ryan C. Gordon <icculus@icculus.org>
parents: 166
diff changeset
368 * to be a FLAC stream, and will try to grok it from existing metadata.
3849438b735e Checks magic number again, unless the file extension is recognized.
Ryan C. Gordon <icculus@icculus.org>
parents: 166
diff changeset
369 * metadata searching can be a very expensive operation, however, so
3849438b735e Checks magic number again, unless the file extension is recognized.
Ryan C. Gordon <icculus@icculus.org>
parents: 166
diff changeset
370 * unless the user swears that it is a FLAC stream through the extension,
3849438b735e Checks magic number again, unless the file extension is recognized.
Ryan C. Gordon <icculus@icculus.org>
parents: 166
diff changeset
371 * we decide what to do based on the existance of a 32-bit magic number.
3849438b735e Checks magic number again, unless the file extension is recognized.
Ryan C. Gordon <icculus@icculus.org>
parents: 166
diff changeset
372 */
3849438b735e Checks magic number again, unless the file extension is recognized.
Ryan C. Gordon <icculus@icculus.org>
parents: 166
diff changeset
373 for (i = 0; extensions_flac[i] != NULL; i++)
3849438b735e Checks magic number again, unless the file extension is recognized.
Ryan C. Gordon <icculus@icculus.org>
parents: 166
diff changeset
374 {
3849438b735e Checks magic number again, unless the file extension is recognized.
Ryan C. Gordon <icculus@icculus.org>
parents: 166
diff changeset
375 if (__Sound_strcasecmp(ext, extensions_flac[i]) == 0)
3849438b735e Checks magic number again, unless the file extension is recognized.
Ryan C. Gordon <icculus@icculus.org>
parents: 166
diff changeset
376 {
3849438b735e Checks magic number again, unless the file extension is recognized.
Ryan C. Gordon <icculus@icculus.org>
parents: 166
diff changeset
377 has_extension = 1;
3849438b735e Checks magic number again, unless the file extension is recognized.
Ryan C. Gordon <icculus@icculus.org>
parents: 166
diff changeset
378 break;
3849438b735e Checks magic number again, unless the file extension is recognized.
Ryan C. Gordon <icculus@icculus.org>
parents: 166
diff changeset
379 } /* if */
3849438b735e Checks magic number again, unless the file extension is recognized.
Ryan C. Gordon <icculus@icculus.org>
parents: 166
diff changeset
380 } /* for */
3849438b735e Checks magic number again, unless the file extension is recognized.
Ryan C. Gordon <icculus@icculus.org>
parents: 166
diff changeset
381
3849438b735e Checks magic number again, unless the file extension is recognized.
Ryan C. Gordon <icculus@icculus.org>
parents: 166
diff changeset
382 if (!has_extension)
3849438b735e Checks magic number again, unless the file extension is recognized.
Ryan C. Gordon <icculus@icculus.org>
parents: 166
diff changeset
383 {
3849438b735e Checks magic number again, unless the file extension is recognized.
Ryan C. Gordon <icculus@icculus.org>
parents: 166
diff changeset
384 int rc;
3849438b735e Checks magic number again, unless the file extension is recognized.
Ryan C. Gordon <icculus@icculus.org>
parents: 166
diff changeset
385 Uint32 flac_magic = SDL_ReadLE32(rw);
3849438b735e Checks magic number again, unless the file extension is recognized.
Ryan C. Gordon <icculus@icculus.org>
parents: 166
diff changeset
386 BAIL_IF_MACRO(flac_magic != FLAC_MAGIC, "FLAC: Not a FLAC stream.", 0);
3849438b735e Checks magic number again, unless the file extension is recognized.
Ryan C. Gordon <icculus@icculus.org>
parents: 166
diff changeset
387
3849438b735e Checks magic number again, unless the file extension is recognized.
Ryan C. Gordon <icculus@icculus.org>
parents: 166
diff changeset
388 /* move back over magic number for metadata scan... */
3849438b735e Checks magic number again, unless the file extension is recognized.
Ryan C. Gordon <icculus@icculus.org>
parents: 166
diff changeset
389 rc = SDL_RWseek(internal->rw, -sizeof (flac_magic), SEEK_CUR);
3849438b735e Checks magic number again, unless the file extension is recognized.
Ryan C. Gordon <icculus@icculus.org>
parents: 166
diff changeset
390 BAIL_IF_MACRO(rc < 0, ERR_IO_ERROR, 0);
3849438b735e Checks magic number again, unless the file extension is recognized.
Ryan C. Gordon <icculus@icculus.org>
parents: 166
diff changeset
391 } /* if */
155
72ff7d3a25b6 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
392
72ff7d3a25b6 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
393 f = (flac_t *) malloc(sizeof (flac_t));
72ff7d3a25b6 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
394 BAIL_IF_MACRO(f == NULL, ERR_OUT_OF_MEMORY, 0);
72ff7d3a25b6 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
395
312
498240aa76f1 Seek implementations.
Ryan C. Gordon <icculus@icculus.org>
parents: 306
diff changeset
396 decoder = d_new();
155
72ff7d3a25b6 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
397 if (decoder == NULL)
72ff7d3a25b6 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
398 {
72ff7d3a25b6 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
399 free(f);
387
fb519e6028e3 Changed all the Sound_SetError() calls to __Sound_SetError (or BAIL*_MACRO)
Ryan C. Gordon <icculus@icculus.org>
parents: 377
diff changeset
400 BAIL_MACRO(ERR_OUT_OF_MEMORY, 0);
155
72ff7d3a25b6 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
401 } /* if */
72ff7d3a25b6 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
402
312
498240aa76f1 Seek implementations.
Ryan C. Gordon <icculus@icculus.org>
parents: 306
diff changeset
403 d_set_read_callback(decoder, read_callback);
498240aa76f1 Seek implementations.
Ryan C. Gordon <icculus@icculus.org>
parents: 306
diff changeset
404 d_set_write_callback(decoder, write_callback);
498240aa76f1 Seek implementations.
Ryan C. Gordon <icculus@icculus.org>
parents: 306
diff changeset
405 d_set_metadata_callback(decoder, metadata_callback);
498240aa76f1 Seek implementations.
Ryan C. Gordon <icculus@icculus.org>
parents: 306
diff changeset
406 d_set_error_callback(decoder, error_callback);
498240aa76f1 Seek implementations.
Ryan C. Gordon <icculus@icculus.org>
parents: 306
diff changeset
407 d_set_seek_callback(decoder, seek_callback);
498240aa76f1 Seek implementations.
Ryan C. Gordon <icculus@icculus.org>
parents: 306
diff changeset
408 d_set_tell_callback(decoder, tell_callback);
498240aa76f1 Seek implementations.
Ryan C. Gordon <icculus@icculus.org>
parents: 306
diff changeset
409 d_set_length_callback(decoder, length_callback);
498240aa76f1 Seek implementations.
Ryan C. Gordon <icculus@icculus.org>
parents: 306
diff changeset
410 d_set_eof_callback(decoder, eof_callback);
422
5b06e23d934e Removed backwards compatible API nastiness from FLAC decoder.
Ryan C. Gordon <icculus@icculus.org>
parents: 400
diff changeset
411
312
498240aa76f1 Seek implementations.
Ryan C. Gordon <icculus@icculus.org>
parents: 306
diff changeset
412 d_set_client_data(decoder, f);
155
72ff7d3a25b6 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
413
72ff7d3a25b6 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
414 f->rw = internal->rw;
72ff7d3a25b6 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
415 f->sample = sample;
72ff7d3a25b6 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
416 f->decoder = decoder;
164
77482005beb6 Now includes FLAC/stream_decoder.h instead of FLAC/all.h. More robust
Ryan C. Gordon <icculus@icculus.org>
parents: 155
diff changeset
417 f->sample->actual.format = 0;
182
3849438b735e Checks magic number again, unless the file extension is recognized.
Ryan C. Gordon <icculus@icculus.org>
parents: 166
diff changeset
418 f->is_flac = 0 /* !!! FIXME: should be "has_extension", not "0". */;
166
d8904267d23c Cleanups, fixes and enhancements by Torbj�rn Andersson.
Ryan C. Gordon <icculus@icculus.org>
parents: 164
diff changeset
419
d8904267d23c Cleanups, fixes and enhancements by Torbj�rn Andersson.
Ryan C. Gordon <icculus@icculus.org>
parents: 164
diff changeset
420 internal->decoder_private = f;
312
498240aa76f1 Seek implementations.
Ryan C. Gordon <icculus@icculus.org>
parents: 306
diff changeset
421 d_init(decoder);
166
d8904267d23c Cleanups, fixes and enhancements by Torbj�rn Andersson.
Ryan C. Gordon <icculus@icculus.org>
parents: 164
diff changeset
422
400
9d0b5ec9cc26 FIXME cleanups.
Ryan C. Gordon <icculus@icculus.org>
parents: 393
diff changeset
423 sample->flags = SOUND_SAMPLEFLAG_NONE;
9d0b5ec9cc26 FIXME cleanups.
Ryan C. Gordon <icculus@icculus.org>
parents: 393
diff changeset
424
9d0b5ec9cc26 FIXME cleanups.
Ryan C. Gordon <icculus@icculus.org>
parents: 393
diff changeset
425 pos = SDL_RWtell(f->rw);
9d0b5ec9cc26 FIXME cleanups.
Ryan C. Gordon <icculus@icculus.org>
parents: 393
diff changeset
426 if (SDL_RWseek(f->rw, 0, SEEK_END) > 0)
9d0b5ec9cc26 FIXME cleanups.
Ryan C. Gordon <icculus@icculus.org>
parents: 393
diff changeset
427 {
9d0b5ec9cc26 FIXME cleanups.
Ryan C. Gordon <icculus@icculus.org>
parents: 393
diff changeset
428 f->stream_length = SDL_RWtell(f->rw);
9d0b5ec9cc26 FIXME cleanups.
Ryan C. Gordon <icculus@icculus.org>
parents: 393
diff changeset
429 if (SDL_RWseek(f->rw, pos, SEEK_SET) == -1)
9d0b5ec9cc26 FIXME cleanups.
Ryan C. Gordon <icculus@icculus.org>
parents: 393
diff changeset
430 {
9d0b5ec9cc26 FIXME cleanups.
Ryan C. Gordon <icculus@icculus.org>
parents: 393
diff changeset
431 free_flac(f);
9d0b5ec9cc26 FIXME cleanups.
Ryan C. Gordon <icculus@icculus.org>
parents: 393
diff changeset
432 BAIL_MACRO(ERR_IO_ERROR, 0);
9d0b5ec9cc26 FIXME cleanups.
Ryan C. Gordon <icculus@icculus.org>
parents: 393
diff changeset
433 } /* if */
9d0b5ec9cc26 FIXME cleanups.
Ryan C. Gordon <icculus@icculus.org>
parents: 393
diff changeset
434 sample->flags = SOUND_SAMPLEFLAG_CANSEEK;
9d0b5ec9cc26 FIXME cleanups.
Ryan C. Gordon <icculus@icculus.org>
parents: 393
diff changeset
435 } /* if */
9d0b5ec9cc26 FIXME cleanups.
Ryan C. Gordon <icculus@icculus.org>
parents: 393
diff changeset
436
231
d3dc34315ac7 Rewind method implemented by Torbj�rn.
Ryan C. Gordon <icculus@icculus.org>
parents: 221
diff changeset
437 /*
182
3849438b735e Checks magic number again, unless the file extension is recognized.
Ryan C. Gordon <icculus@icculus.org>
parents: 166
diff changeset
438 * If we are not sure this is a FLAC stream, check for the STREAMINFO
166
d8904267d23c Cleanups, fixes and enhancements by Torbj�rn Andersson.
Ryan C. Gordon <icculus@icculus.org>
parents: 164
diff changeset
439 * metadata block. If not, we'd have to peek at the first audio frame
182
3849438b735e Checks magic number again, unless the file extension is recognized.
Ryan C. Gordon <icculus@icculus.org>
parents: 166
diff changeset
440 * and get the sound format from there, but that is not yet
3849438b735e Checks magic number again, unless the file extension is recognized.
Ryan C. Gordon <icculus@icculus.org>
parents: 166
diff changeset
441 * implemented.
166
d8904267d23c Cleanups, fixes and enhancements by Torbj�rn Andersson.
Ryan C. Gordon <icculus@icculus.org>
parents: 164
diff changeset
442 */
d8904267d23c Cleanups, fixes and enhancements by Torbj�rn Andersson.
Ryan C. Gordon <icculus@icculus.org>
parents: 164
diff changeset
443 if (!f->is_flac)
155
72ff7d3a25b6 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
444 {
312
498240aa76f1 Seek implementations.
Ryan C. Gordon <icculus@icculus.org>
parents: 306
diff changeset
445 d_process_metadata(decoder);
166
d8904267d23c Cleanups, fixes and enhancements by Torbj�rn Andersson.
Ryan C. Gordon <icculus@icculus.org>
parents: 164
diff changeset
446
d8904267d23c Cleanups, fixes and enhancements by Torbj�rn Andersson.
Ryan C. Gordon <icculus@icculus.org>
parents: 164
diff changeset
447 /* Still not FLAC? Give up. */
d8904267d23c Cleanups, fixes and enhancements by Torbj�rn Andersson.
Ryan C. Gordon <icculus@icculus.org>
parents: 164
diff changeset
448 if (!f->is_flac)
d8904267d23c Cleanups, fixes and enhancements by Torbj�rn Andersson.
Ryan C. Gordon <icculus@icculus.org>
parents: 164
diff changeset
449 {
d8904267d23c Cleanups, fixes and enhancements by Torbj�rn Andersson.
Ryan C. Gordon <icculus@icculus.org>
parents: 164
diff changeset
450 free_flac(f);
387
fb519e6028e3 Changed all the Sound_SetError() calls to __Sound_SetError (or BAIL*_MACRO)
Ryan C. Gordon <icculus@icculus.org>
parents: 377
diff changeset
451 BAIL_MACRO("FLAC: No metadata found. Not a FLAC stream?", 0);
166
d8904267d23c Cleanups, fixes and enhancements by Torbj�rn Andersson.
Ryan C. Gordon <icculus@icculus.org>
parents: 164
diff changeset
452 } /* if */
155
72ff7d3a25b6 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
453 } /* if */
72ff7d3a25b6 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
454
164
77482005beb6 Now includes FLAC/stream_decoder.h instead of FLAC/all.h. More robust
Ryan C. Gordon <icculus@icculus.org>
parents: 155
diff changeset
455 SNDDBG(("FLAC: Accepting data stream.\n"));
155
72ff7d3a25b6 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
456 return(1);
72ff7d3a25b6 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
457 } /* FLAC_open */
72ff7d3a25b6 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
458
72ff7d3a25b6 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
459
72ff7d3a25b6 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
460 static void FLAC_close(Sound_Sample *sample)
72ff7d3a25b6 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
461 {
72ff7d3a25b6 Initial add.
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462 Sound_SampleInternal *internal = (Sound_SampleInternal *) sample->opaque;
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463 flac_t *f = (flac_t *) internal->decoder_private;
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464
166
d8904267d23c Cleanups, fixes and enhancements by Torbj�rn Andersson.
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465 free_flac(f);
155
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466 } /* FLAC_close */
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Ryan C. Gordon <icculus@icculus.org>
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467
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Ryan C. Gordon <icculus@icculus.org>
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468
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Ryan C. Gordon <icculus@icculus.org>
parents:
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469 static Uint32 FLAC_read(Sound_Sample *sample)
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parents:
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470 {
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471 Sound_SampleInternal *internal = (Sound_SampleInternal *) sample->opaque;
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472 flac_t *f = (flac_t *) internal->decoder_private;
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Ryan C. Gordon <icculus@icculus.org>
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473 Uint32 len;
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474
312
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475 if (!d_process_one_frame(f->decoder))
155
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Ryan C. Gordon <icculus@icculus.org>
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476 {
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477 sample->flags |= SOUND_SAMPLEFLAG_ERROR;
387
fb519e6028e3 Changed all the Sound_SetError() calls to __Sound_SetError (or BAIL*_MACRO)
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478 BAIL_MACRO("FLAC: Couldn't decode frame.", 0);
155
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479 } /* if */
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480
312
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481 if (d_get_state(f->decoder) == D_END_OF_STREAM)
231
d3dc34315ac7 Rewind method implemented by Torbj�rn.
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diff changeset
482 {
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483 sample->flags |= SOUND_SAMPLEFLAG_EOF;
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diff changeset
484 return(0);
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diff changeset
485 } /* if */
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diff changeset
486
164
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487 /* An error may have been signalled through the error callback. */
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488 if (sample->flags & SOUND_SAMPLEFLAG_ERROR)
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489 return(0);
231
d3dc34315ac7 Rewind method implemented by Torbj�rn.
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diff changeset
490
155
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491 return(f->frame_size);
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Ryan C. Gordon <icculus@icculus.org>
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492 } /* FLAC_read */
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493
221
c9772a9f5271 Initial implementation or stubs for rewind method. Other cleanups.
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diff changeset
494
c9772a9f5271 Initial implementation or stubs for rewind method. Other cleanups.
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495 static int FLAC_rewind(Sound_Sample *sample)
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496 {
312
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497 return FLAC_seek(sample, 0);
221
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498 } /* FLAC_rewind */
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499
306
c97be6e1bd27 Added framework for Sound_Seek() support.
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diff changeset
500
c97be6e1bd27 Added framework for Sound_Seek() support.
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501 static int FLAC_seek(Sound_Sample *sample, Uint32 ms)
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502 {
312
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503 Sound_SampleInternal *internal = (Sound_SampleInternal *) sample->opaque;
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504 flac_t *f = (flac_t *) internal->decoder_private;
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505
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506 d_seek_absolute(f->decoder, (ms * sample->actual.rate) / 1000);
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507 return(1);
306
c97be6e1bd27 Added framework for Sound_Seek() support.
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508 } /* FLAC_seek */
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509
155
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510 #endif /* SOUND_SUPPORTS_FLAC */
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511
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512 /* end of flac.c ... */