author | nemo |
Fri, 16 Oct 2009 18:04:38 +0000 | |
changeset 2499 | 548f69de8db1 |
parent 2443 | fececcbc2189 |
child 2529 | 51e5df1c8462 |
permissions | -rw-r--r-- |
2191 | 1 |
/* |
2 |
* OpenAL Bridge - a simple portable library for OpenAL interface |
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* Copyright (c) 2009 Vittorio Giovara <vittorio.giovara@gmail.com>, |
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4 |
* Mario Liebisch <mario.liebisch+hw@googlemail.com> |
2191 | 5 |
* |
6 |
* This program is free software; you can redistribute it and/or modify |
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* it under the terms of the GNU Lesser General Public License as published by |
2191 | 8 |
* the Free Software Foundation; version 2 of the License |
9 |
* |
|
10 |
* This program is distributed in the hope that it will be useful, |
|
11 |
* but WITHOUT ANY WARRANTY; without even the implied warranty of |
|
12 |
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
|
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13 |
* GNU Lesser General Public License for more details. |
2191 | 14 |
* |
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* You should have received a copy of the GNU Lesser General Public License |
2191 | 16 |
* along with this program; if not, write to the Free Software |
17 |
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA |
|
18 |
*/ |
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19 |
||
20 |
#include "loaders.h" |
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21 |
||
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int load_wavpcm (const char *filename, ALenum *format, char ** data, ALsizei *bitsize, ALsizei *freq) { |
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WAV_header_t WAVHeader; |
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FILE *wavfile; |
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int32_t t; |
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uint32_t n = 0; |
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uint8_t sub0, sub1, sub2, sub3; |
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29 |
|
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wavfile = Fopen(filename, "rb"); |
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|
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fread(&WAVHeader.ChunkID, sizeof(uint32_t), 1, wavfile); /*RIFF*/ |
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fread(&WAVHeader.ChunkSize, sizeof(uint32_t), 1, wavfile); |
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fread(&WAVHeader.Format, sizeof(uint32_t), 1, wavfile); /*WAVE*/ |
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|
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#ifdef DEBUG |
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fprintf(stderr, "ChunkID: %X\n", ENDIAN_BIG_32(WAVHeader.ChunkID)); |
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fprintf(stderr, "ChunkSize: %d\n", ENDIAN_LITTLE_32(WAVHeader.ChunkSize)); |
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fprintf(stderr, "Format: %X\n", ENDIAN_BIG_32(WAVHeader.Format)); |
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#endif |
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|
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fread(&WAVHeader.Subchunk1ID, sizeof(uint32_t), 1, wavfile); /*fmt */ |
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fread(&WAVHeader.Subchunk1Size, sizeof(uint32_t), 1, wavfile); |
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fread(&WAVHeader.AudioFormat, sizeof(uint16_t), 1, wavfile); |
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fread(&WAVHeader.NumChannels, sizeof(uint16_t), 1, wavfile); |
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fread(&WAVHeader.SampleRate, sizeof(uint32_t), 1, wavfile); |
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fread(&WAVHeader.ByteRate, sizeof(uint32_t), 1, wavfile); |
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fread(&WAVHeader.BlockAlign, sizeof(uint16_t), 1, wavfile); |
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fread(&WAVHeader.BitsPerSample, sizeof(uint16_t), 1, wavfile); |
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2191 | 51 |
#ifdef DEBUG |
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fprintf(stderr, "Subchunk1ID: %X\n", ENDIAN_BIG_32(WAVHeader.Subchunk1ID)); |
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fprintf(stderr, "Subchunk1Size: %d\n", ENDIAN_LITTLE_32(WAVHeader.Subchunk1Size)); |
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fprintf(stderr, "AudioFormat: %d\n", ENDIAN_LITTLE_16(WAVHeader.AudioFormat)); |
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fprintf(stderr, "NumChannels: %d\n", ENDIAN_LITTLE_16(WAVHeader.NumChannels)); |
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fprintf(stderr, "SampleRate: %d\n", ENDIAN_LITTLE_32(WAVHeader.SampleRate)); |
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fprintf(stderr, "ByteRate: %d\n", ENDIAN_LITTLE_32(WAVHeader.ByteRate)); |
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fprintf(stderr, "BlockAlign: %d\n", ENDIAN_LITTLE_16(WAVHeader.BlockAlign)); |
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fprintf(stderr, "BitsPerSample: %d\n", ENDIAN_LITTLE_16(WAVHeader.BitsPerSample)); |
2421 | 60 |
#endif |
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|
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/*remove useless header chunks by looking for the WAV_HEADER_SUBCHUNK2ID integer */ |
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do { |
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t = fread(&sub0, sizeof(uint8_t), 1, wavfile); |
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if(sub0 == 0x64) { |
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t = fread(&sub1, sizeof(uint8_t), 1, wavfile); |
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if(sub1 == 0x61) { |
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t = fread(&sub2, sizeof(uint8_t), 1, wavfile); |
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if(sub2 == 0x74) { |
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t = fread(&sub3, sizeof(uint8_t), 1, wavfile); |
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if(sub3 == 0x61) { |
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WAVHeader.Subchunk2ID = WAV_HEADER_SUBCHUNK2ID; |
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break; |
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} |
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} |
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} |
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} |
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if (t <= 0) { |
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/*eof*/ |
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errno = EILSEQ; |
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err_ret("(%s) ERROR - wrong WAV header", prog); |
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return AL_FALSE; |
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} |
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} while (1); |
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|
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fread(&WAVHeader.Subchunk2Size, sizeof(uint32_t), 1, wavfile); |
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|
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#ifdef DEBUG |
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fprintf(stderr, "Subchunk2ID: %X\n", ENDIAN_LITTLE_32(WAVHeader.Subchunk2ID)); |
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fprintf(stderr, "Subchunk2Size: %d\n", ENDIAN_LITTLE_32(WAVHeader.Subchunk2Size)); |
2191 | 92 |
#endif |
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|
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*data = (char*) Malloc (sizeof(char) * ENDIAN_LITTLE_32(WAVHeader.Subchunk2Size)); |
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|
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/*read the actual sound data*/ |
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97 |
do { |
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n += fread(&((*data)[n]), sizeof(uint8_t), 4, wavfile); |
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} while (n < ENDIAN_LITTLE_32(WAVHeader.Subchunk2Size)); |
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100 |
|
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101 |
fclose(wavfile); |
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102 |
|
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#ifdef DEBUG |
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104 |
err_msg("(%s) INFO - WAV data loaded", prog); |
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105 |
#endif |
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106 |
|
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107 |
/*set parameters for OpenAL*/ |
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108 |
/*Valid formats are AL_FORMAT_MONO8, AL_FORMAT_MONO16, AL_FORMAT_STEREO8, and AL_FORMAT_STEREO16*/ |
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109 |
if (ENDIAN_LITTLE_16(WAVHeader.NumChannels) == 1) { |
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if (ENDIAN_LITTLE_16(WAVHeader.BitsPerSample) == 8) |
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*format = AL_FORMAT_MONO8; |
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112 |
else { |
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113 |
if (ENDIAN_LITTLE_16(WAVHeader.BitsPerSample) == 16) |
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114 |
*format = AL_FORMAT_MONO16; |
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115 |
else { |
2421 | 116 |
errno = EILSEQ; |
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117 |
err_ret("(%s) ERROR - wrong WAV header [bitsample value]", prog); |
2421 | 118 |
return AL_FALSE; |
119 |
} |
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120 |
} |
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121 |
} else { |
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122 |
if (ENDIAN_LITTLE_16(WAVHeader.NumChannels) == 2) { |
2421 | 123 |
if (ENDIAN_LITTLE_16(WAVHeader.BitsPerSample) == 8) |
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124 |
*format = AL_FORMAT_STEREO8; |
2421 | 125 |
else { |
126 |
if (ENDIAN_LITTLE_16(WAVHeader.BitsPerSample) == 16) |
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127 |
*format = AL_FORMAT_STEREO16; |
2421 | 128 |
else { |
129 |
errno = EILSEQ; |
|
130 |
err_ret("(%s) ERROR - wrong WAV header [bitsample value]", prog); |
|
131 |
return AL_FALSE; |
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132 |
} |
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133 |
} |
2421 | 134 |
} else { |
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135 |
errno = EILSEQ; |
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136 |
err_ret("(%s) ERROR - wrong WAV header [format value]", prog); |
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137 |
return AL_FALSE; |
2415 | 138 |
} |
2259 | 139 |
} |
140 |
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141 |
*bitsize = ENDIAN_LITTLE_32(WAVHeader.Subchunk2Size); |
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142 |
*freq = ENDIAN_LITTLE_32(WAVHeader.SampleRate); |
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143 |
return AL_TRUE; |
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144 |
} |
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145 |
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146 |
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147 |
int load_oggvorbis (const char *filename, ALenum *format, char **data, ALsizei *bitsize, ALsizei *freq) { |
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148 |
/*implementation inspired from http://www.devmaster.net/forums/showthread.php?t=1153 */ |
2421 | 149 |
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150 |
/*stream handle*/ |
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151 |
OggVorbis_File oggStream; |
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152 |
/*some formatting data*/ |
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153 |
vorbis_info *vorbisInfo; |
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154 |
/*length of the decoded data*/ |
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155 |
int64_t pcm_length; |
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156 |
/*other vars*/ |
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157 |
int section, result, size, endianness; |
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158 |
#ifdef DEBUG |
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159 |
int i; |
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160 |
/*other less useful data*/ |
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161 |
vorbis_comment *vorbisComment; |
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162 |
#endif |
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163 |
|
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164 |
result = ov_fopen((char*) filename, &oggStream); |
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165 |
if (result < 0) { |
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166 |
errno = EINVAL; |
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167 |
err_ret("(%s) ERROR - ov_fopen() failed with %X", prog, result); |
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168 |
ov_clear(&oggStream); |
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169 |
return AL_FALSE; |
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170 |
} |
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171 |
|
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172 |
/*load OGG header and determine the decoded data size*/ |
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173 |
vorbisInfo = ov_info(&oggStream, -1); |
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174 |
pcm_length = ov_pcm_total(&oggStream, -1) << vorbisInfo->channels; |
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175 |
|
2210 | 176 |
#ifdef DEBUG |
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vorbisComment = ov_comment(&oggStream, -1); |
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178 |
fprintf(stderr, "Version: %d\n", vorbisInfo->version); |
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179 |
fprintf(stderr, "Channels: %d\n", vorbisInfo->channels); |
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180 |
fprintf(stderr, "Rate (Hz): %ld\n", vorbisInfo->rate); |
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fprintf(stderr, "Bitrate Upper: %ld\n", vorbisInfo->bitrate_upper); |
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182 |
fprintf(stderr, "Bitrate Nominal: %ld\n", vorbisInfo->bitrate_nominal); |
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fprintf(stderr, "Bitrate Lower: %ld\n", vorbisInfo->bitrate_lower); |
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184 |
fprintf(stderr, "Bitrate Windows: %ld\n", vorbisInfo->bitrate_window); |
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185 |
fprintf(stderr, "Vendor: %s\n", vorbisComment->vendor); |
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186 |
fprintf(stderr, "PCM data size: %lld\n", pcm_length); |
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187 |
fprintf(stderr, "# comment: %d\n", vorbisComment->comments); |
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188 |
for (i = 0; i < vorbisComment->comments; i++) |
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189 |
fprintf(stderr, "\tComment %d: %s\n", i, vorbisComment->user_comments[i]); |
2210 | 190 |
#endif |
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191 |
|
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192 |
/*allocates enough room for the decoded data*/ |
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193 |
*data = (char*) Malloc (sizeof(char) * pcm_length); |
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194 |
|
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195 |
/*there *should* not be ogg at 8 bits*/ |
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196 |
if (vorbisInfo->channels == 1) |
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197 |
*format = AL_FORMAT_MONO16; |
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198 |
else { |
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199 |
if (vorbisInfo->channels == 2) |
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200 |
*format = AL_FORMAT_STEREO16; |
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|
201 |
else { |
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202 |
errno = EILSEQ; |
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203 |
err_ret("(%s) ERROR - wrong OGG header [channel %d]", prog, vorbisInfo->channels); |
2421 | 204 |
ov_clear(&oggStream); |
205 |
return AL_FALSE; |
|
206 |
} |
|
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207 |
} |
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|
208 |
|
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209 |
size = 0; |
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210 |
#ifdef __LITTLE_ENDIAN__ |
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211 |
endianness = 0; |
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212 |
#elif __BIG_ENDIAN__ |
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213 |
endianness = 1; |
2191 | 214 |
#endif |
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215 |
while (size < pcm_length) { |
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216 |
/*ov_read decodes the ogg stream and storse the pcm in data*/ |
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217 |
result = ov_read (&oggStream, *data + size, pcm_length - size, endianness, 2, 1, §ion); |
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218 |
if (result > 0) { |
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219 |
size += result; |
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220 |
} else { |
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221 |
if (result == 0) |
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222 |
break; |
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223 |
else { |
2421 | 224 |
errno = EILSEQ; |
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225 |
err_ret("(%s) ERROR - End of file from OGG stream", prog); |
2421 | 226 |
ov_clear(&oggStream); |
227 |
return AL_FALSE; |
|
228 |
} |
|
229 |
} |
|
2259 | 230 |
} |
231 |
||
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232 |
/*set the last fields*/ |
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233 |
*bitsize = size; |
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234 |
*freq = vorbisInfo->rate; |
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235 |
|
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236 |
/*cleaning time*/ |
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237 |
ov_clear(&oggStream); |
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|
238 |
|
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239 |
return AL_TRUE; |
2191 | 240 |
} |
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241 |
|
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242 |