| 1 | <?php |
|---|
| 2 | ///////////////////////////////////////////////////////////////// |
|---|
| 3 | /// getID3() by James Heinrich <info@getid3.org> // |
|---|
| 4 | // available at http://getid3.sourceforge.net // |
|---|
| 5 | // or http://www.getid3.org // |
|---|
| 6 | ///////////////////////////////////////////////////////////////// |
|---|
| 7 | // See readme.txt for more details // |
|---|
| 8 | ///////////////////////////////////////////////////////////////// |
|---|
| 9 | // // |
|---|
| 10 | // module.audio.wavpack.php // |
|---|
| 11 | // module for analyzing WavPack v4.0+ Audio files // |
|---|
| 12 | // dependencies: NONE // |
|---|
| 13 | // /// |
|---|
| 14 | ///////////////////////////////////////////////////////////////// |
|---|
| 15 | |
|---|
| 16 | |
|---|
| 17 | class getid3_wavpack |
|---|
| 18 | { |
|---|
| 19 | |
|---|
| 20 | function getid3_wavpack(&$fd, &$ThisFileInfo) { |
|---|
| 21 | |
|---|
| 22 | fseek($fd, $ThisFileInfo['avdataoffset'], SEEK_SET); |
|---|
| 23 | |
|---|
| 24 | while (true) { |
|---|
| 25 | |
|---|
| 26 | $wavpackheader = fread($fd, 32); |
|---|
| 27 | |
|---|
| 28 | if (ftell($fd) >= $ThisFileInfo['avdataend']) { |
|---|
| 29 | break; |
|---|
| 30 | } elseif (feof($fd)) { |
|---|
| 31 | break; |
|---|
| 32 | } elseif ( |
|---|
| 33 | (@$ThisFileInfo['wavpack']['blockheader']['total_samples'] > 0) && |
|---|
| 34 | (@$ThisFileInfo['wavpack']['blockheader']['block_samples'] > 0) && |
|---|
| 35 | (!isset($ThisFileInfo['wavpack']['riff_trailer_size']) || ($ThisFileInfo['wavpack']['riff_trailer_size'] <= 0)) && |
|---|
| 36 | ((@$ThisFileInfo['wavpack']['config_flags']['md5_checksum'] === false) || !empty($ThisFileInfo['md5_data_source']))) { |
|---|
| 37 | break; |
|---|
| 38 | } |
|---|
| 39 | |
|---|
| 40 | $blockheader_offset = ftell($fd) - 32; |
|---|
| 41 | $blockheader_magic = substr($wavpackheader, 0, 4); |
|---|
| 42 | $blockheader_size = getid3_lib::LittleEndian2Int(substr($wavpackheader, 4, 4)); |
|---|
| 43 | |
|---|
| 44 | if ($blockheader_magic != 'wvpk') { |
|---|
| 45 | $ThisFileInfo['error'][] = 'Expecting "wvpk" at offset '.$blockheader_offset.', found "'.$blockheader_magic.'"'; |
|---|
| 46 | if ((@$ThisFileInfo['audio']['dataformat'] != 'wavpack') && (@$ThisFileInfo['audio']['dataformat'] != 'wvc')) { |
|---|
| 47 | unset($ThisFileInfo['fileformat']); |
|---|
| 48 | unset($ThisFileInfo['audio']); |
|---|
| 49 | unset($ThisFileInfo['wavpack']); |
|---|
| 50 | } |
|---|
| 51 | return false; |
|---|
| 52 | } |
|---|
| 53 | |
|---|
| 54 | |
|---|
| 55 | if ((@$ThisFileInfo['wavpack']['blockheader']['block_samples'] <= 0) || |
|---|
| 56 | (@$ThisFileInfo['wavpack']['blockheader']['total_samples'] <= 0)) { |
|---|
| 57 | // Also, it is possible that the first block might not have |
|---|
| 58 | // any samples (block_samples == 0) and in this case you should skip blocks |
|---|
| 59 | // until you find one with samples because the other information (like |
|---|
| 60 | // total_samples) are not guaranteed to be correct until (block_samples > 0) |
|---|
| 61 | |
|---|
| 62 | // Finally, I have defined a format for files in which the length is not known |
|---|
| 63 | // (for example when raw files are created using pipes). In these cases |
|---|
| 64 | // total_samples will be -1 and you must seek to the final block to determine |
|---|
| 65 | // the total number of samples. |
|---|
| 66 | |
|---|
| 67 | |
|---|
| 68 | $ThisFileInfo['audio']['dataformat'] = 'wavpack'; |
|---|
| 69 | $ThisFileInfo['fileformat'] = 'wavpack'; |
|---|
| 70 | $ThisFileInfo['audio']['lossless'] = true; |
|---|
| 71 | $ThisFileInfo['audio']['bitrate_mode'] = 'vbr'; |
|---|
| 72 | |
|---|
| 73 | $ThisFileInfo['wavpack']['blockheader']['offset'] = $blockheader_offset; |
|---|
| 74 | $ThisFileInfo['wavpack']['blockheader']['magic'] = $blockheader_magic; |
|---|
| 75 | $ThisFileInfo['wavpack']['blockheader']['size'] = $blockheader_size; |
|---|
| 76 | |
|---|
| 77 | if ($ThisFileInfo['wavpack']['blockheader']['size'] >= 0x100000) { |
|---|
| 78 | $ThisFileInfo['error'][] = 'Expecting WavPack block size less than "0x100000", found "'.$ThisFileInfo['wavpack']['blockheader']['size'].'" at offset '.$ThisFileInfo['wavpack']['blockheader']['offset']; |
|---|
| 79 | if ((@$ThisFileInfo['audio']['dataformat'] != 'wavpack') && (@$ThisFileInfo['audio']['dataformat'] != 'wvc')) { |
|---|
| 80 | unset($ThisFileInfo['fileformat']); |
|---|
| 81 | unset($ThisFileInfo['audio']); |
|---|
| 82 | unset($ThisFileInfo['wavpack']); |
|---|
| 83 | } |
|---|
| 84 | return false; |
|---|
| 85 | } |
|---|
| 86 | |
|---|
| 87 | $ThisFileInfo['wavpack']['blockheader']['minor_version'] = ord($wavpackheader{8}); |
|---|
| 88 | $ThisFileInfo['wavpack']['blockheader']['major_version'] = ord($wavpackheader{9}); |
|---|
| 89 | |
|---|
| 90 | if (($ThisFileInfo['wavpack']['blockheader']['major_version'] != 4) || |
|---|
| 91 | (($ThisFileInfo['wavpack']['blockheader']['minor_version'] < 4) && |
|---|
| 92 | ($ThisFileInfo['wavpack']['blockheader']['minor_version'] > 16))) { |
|---|
| 93 | $ThisFileInfo['error'][] = 'Expecting WavPack version between "4.2" and "4.16", found version "'.$ThisFileInfo['wavpack']['blockheader']['major_version'].'.'.$ThisFileInfo['wavpack']['blockheader']['minor_version'].'" at offset '.$ThisFileInfo['wavpack']['blockheader']['offset']; |
|---|
| 94 | if ((@$ThisFileInfo['audio']['dataformat'] != 'wavpack') && (@$ThisFileInfo['audio']['dataformat'] != 'wvc')) { |
|---|
| 95 | unset($ThisFileInfo['fileformat']); |
|---|
| 96 | unset($ThisFileInfo['audio']); |
|---|
| 97 | unset($ThisFileInfo['wavpack']); |
|---|
| 98 | } |
|---|
| 99 | return false; |
|---|
| 100 | } |
|---|
| 101 | |
|---|
| 102 | $ThisFileInfo['wavpack']['blockheader']['track_number'] = ord($wavpackheader{10}); // unused |
|---|
| 103 | $ThisFileInfo['wavpack']['blockheader']['index_number'] = ord($wavpackheader{11}); // unused |
|---|
| 104 | $ThisFileInfo['wavpack']['blockheader']['total_samples'] = getid3_lib::LittleEndian2Int(substr($wavpackheader, 12, 4)); |
|---|
| 105 | $ThisFileInfo['wavpack']['blockheader']['block_index'] = getid3_lib::LittleEndian2Int(substr($wavpackheader, 16, 4)); |
|---|
| 106 | $ThisFileInfo['wavpack']['blockheader']['block_samples'] = getid3_lib::LittleEndian2Int(substr($wavpackheader, 20, 4)); |
|---|
| 107 | $ThisFileInfo['wavpack']['blockheader']['flags_raw'] = getid3_lib::LittleEndian2Int(substr($wavpackheader, 24, 4)); |
|---|
| 108 | $ThisFileInfo['wavpack']['blockheader']['crc'] = getid3_lib::LittleEndian2Int(substr($wavpackheader, 28, 4)); |
|---|
| 109 | |
|---|
| 110 | $ThisFileInfo['wavpack']['blockheader']['flags']['bytes_per_sample'] = 1 + ($ThisFileInfo['wavpack']['blockheader']['flags_raw'] & 0x00000003); |
|---|
| 111 | $ThisFileInfo['wavpack']['blockheader']['flags']['mono'] = (bool) ($ThisFileInfo['wavpack']['blockheader']['flags_raw'] & 0x00000004); |
|---|
| 112 | $ThisFileInfo['wavpack']['blockheader']['flags']['hybrid'] = (bool) ($ThisFileInfo['wavpack']['blockheader']['flags_raw'] & 0x00000008); |
|---|
| 113 | $ThisFileInfo['wavpack']['blockheader']['flags']['joint_stereo'] = (bool) ($ThisFileInfo['wavpack']['blockheader']['flags_raw'] & 0x00000010); |
|---|
| 114 | $ThisFileInfo['wavpack']['blockheader']['flags']['cross_decorrelation'] = (bool) ($ThisFileInfo['wavpack']['blockheader']['flags_raw'] & 0x00000020); |
|---|
| 115 | $ThisFileInfo['wavpack']['blockheader']['flags']['hybrid_noiseshape'] = (bool) ($ThisFileInfo['wavpack']['blockheader']['flags_raw'] & 0x00000040); |
|---|
| 116 | $ThisFileInfo['wavpack']['blockheader']['flags']['ieee_32bit_float'] = (bool) ($ThisFileInfo['wavpack']['blockheader']['flags_raw'] & 0x00000080); |
|---|
| 117 | $ThisFileInfo['wavpack']['blockheader']['flags']['int_32bit'] = (bool) ($ThisFileInfo['wavpack']['blockheader']['flags_raw'] & 0x00000100); |
|---|
| 118 | $ThisFileInfo['wavpack']['blockheader']['flags']['hybrid_bitrate_noise'] = (bool) ($ThisFileInfo['wavpack']['blockheader']['flags_raw'] & 0x00000200); |
|---|
| 119 | $ThisFileInfo['wavpack']['blockheader']['flags']['hybrid_balance_noise'] = (bool) ($ThisFileInfo['wavpack']['blockheader']['flags_raw'] & 0x00000400); |
|---|
| 120 | $ThisFileInfo['wavpack']['blockheader']['flags']['multichannel_initial'] = (bool) ($ThisFileInfo['wavpack']['blockheader']['flags_raw'] & 0x00000800); |
|---|
| 121 | $ThisFileInfo['wavpack']['blockheader']['flags']['multichannel_final'] = (bool) ($ThisFileInfo['wavpack']['blockheader']['flags_raw'] & 0x00001000); |
|---|
| 122 | |
|---|
| 123 | $ThisFileInfo['audio']['lossless'] = !$ThisFileInfo['wavpack']['blockheader']['flags']['hybrid']; |
|---|
| 124 | } |
|---|
| 125 | |
|---|
| 126 | while (!feof($fd) && (ftell($fd) < ($blockheader_offset + $blockheader_size + 8))) { |
|---|
| 127 | |
|---|
| 128 | $metablock = array('offset'=>ftell($fd)); |
|---|
| 129 | $metablockheader = fread($fd, 2); |
|---|
| 130 | if (feof($fd)) { |
|---|
| 131 | break; |
|---|
| 132 | } |
|---|
| 133 | $metablock['id'] = ord($metablockheader{0}); |
|---|
| 134 | $metablock['function_id'] = ($metablock['id'] & 0x3F); |
|---|
| 135 | $metablock['function_name'] = $this->WavPackMetablockNameLookup($metablock['function_id']); |
|---|
| 136 | |
|---|
| 137 | // The 0x20 bit in the id of the meta subblocks (which is defined as |
|---|
| 138 | // ID_OPTIONAL_DATA) is a permanent part of the id. The idea is that |
|---|
| 139 | // if a decoder encounters an id that it does not know about, it uses |
|---|
| 140 | // that "ID_OPTIONAL_DATA" flag to determine what to do. If it is set |
|---|
| 141 | // then the decoder simply ignores the metadata, but if it is zero |
|---|
| 142 | // then the decoder should quit because it means that an understanding |
|---|
| 143 | // of the metadata is required to correctly decode the audio. |
|---|
| 144 | $metablock['non_decoder'] = (bool) ($metablock['id'] & 0x20); |
|---|
| 145 | |
|---|
| 146 | $metablock['padded_data'] = (bool) ($metablock['id'] & 0x40); |
|---|
| 147 | $metablock['large_block'] = (bool) ($metablock['id'] & 0x80); |
|---|
| 148 | if ($metablock['large_block']) { |
|---|
| 149 | $metablockheader .= fread($fd, 2); |
|---|
| 150 | } |
|---|
| 151 | $metablock['size'] = getid3_lib::LittleEndian2Int(substr($metablockheader, 1)) * 2; // size is stored in words |
|---|
| 152 | $metablock['data'] = null; |
|---|
| 153 | |
|---|
| 154 | if ($metablock['size'] > 0) { |
|---|
| 155 | |
|---|
| 156 | switch ($metablock['function_id']) { |
|---|
| 157 | case 0x21: // ID_RIFF_HEADER |
|---|
| 158 | case 0x22: // ID_RIFF_TRAILER |
|---|
| 159 | case 0x23: // ID_REPLAY_GAIN |
|---|
| 160 | case 0x24: // ID_CUESHEET |
|---|
| 161 | case 0x25: // ID_CONFIG_BLOCK |
|---|
| 162 | case 0x26: // ID_MD5_CHECKSUM |
|---|
| 163 | $metablock['data'] = fread($fd, $metablock['size']); |
|---|
| 164 | |
|---|
| 165 | if ($metablock['padded_data']) { |
|---|
| 166 | // padded to the nearest even byte |
|---|
| 167 | $metablock['size']--; |
|---|
| 168 | $metablock['data'] = substr($metablock['data'], 0, -1); |
|---|
| 169 | } |
|---|
| 170 | break; |
|---|
| 171 | |
|---|
| 172 | case 0x00: // ID_DUMMY |
|---|
| 173 | case 0x01: // ID_ENCODER_INFO |
|---|
| 174 | case 0x02: // ID_DECORR_TERMS |
|---|
| 175 | case 0x03: // ID_DECORR_WEIGHTS |
|---|
| 176 | case 0x04: // ID_DECORR_SAMPLES |
|---|
| 177 | case 0x05: // ID_ENTROPY_VARS |
|---|
| 178 | case 0x06: // ID_HYBRID_PROFILE |
|---|
| 179 | case 0x07: // ID_SHAPING_WEIGHTS |
|---|
| 180 | case 0x08: // ID_FLOAT_INFO |
|---|
| 181 | case 0x09: // ID_INT32_INFO |
|---|
| 182 | case 0x0A: // ID_WV_BITSTREAM |
|---|
| 183 | case 0x0B: // ID_WVC_BITSTREAM |
|---|
| 184 | case 0x0C: // ID_WVX_BITSTREAM |
|---|
| 185 | case 0x0D: // ID_CHANNEL_INFO |
|---|
| 186 | fseek($fd, $metablock['offset'] + ($metablock['large_block'] ? 4 : 2) + $metablock['size'], SEEK_SET); |
|---|
| 187 | break; |
|---|
| 188 | |
|---|
| 189 | default: |
|---|
| 190 | $ThisFileInfo['warning'][] = 'Unexpected metablock type "0x'.str_pad(dechex($metablock['function_id']), 2, '0', STR_PAD_LEFT).'" at offset '.$metablock['offset']; |
|---|
| 191 | fseek($fd, $metablock['offset'] + ($metablock['large_block'] ? 4 : 2) + $metablock['size'], SEEK_SET); |
|---|
| 192 | break; |
|---|
| 193 | } |
|---|
| 194 | |
|---|
| 195 | switch ($metablock['function_id']) { |
|---|
| 196 | case 0x21: // ID_RIFF_HEADER |
|---|
| 197 | getid3_lib::IncludeDependency(GETID3_INCLUDEPATH.'module.audio-video.riff.php', __FILE__, true); |
|---|
| 198 | $original_wav_filesize = getid3_lib::LittleEndian2Int(substr($metablock['data'], 4, 4)); |
|---|
| 199 | getid3_riff::ParseRIFFdata($metablock['data'], $ParsedRIFFheader); |
|---|
| 200 | $metablock['riff'] = $ParsedRIFFheader['riff']; |
|---|
| 201 | $metablock['riff']['original_filesize'] = $original_wav_filesize; |
|---|
| 202 | $ThisFileInfo['wavpack']['riff_trailer_size'] = $original_wav_filesize - $metablock['riff']['WAVE']['data'][0]['size'] - $metablock['riff']['header_size']; |
|---|
| 203 | |
|---|
| 204 | $ThisFileInfo['audio']['sample_rate'] = $ParsedRIFFheader['riff']['raw']['fmt ']['nSamplesPerSec']; |
|---|
| 205 | $ThisFileInfo['playtime_seconds'] = $ThisFileInfo['wavpack']['blockheader']['total_samples'] / $ThisFileInfo['audio']['sample_rate']; |
|---|
| 206 | |
|---|
| 207 | // Safe RIFF header in case there's a RIFF footer later |
|---|
| 208 | $metablockRIFFheader = $metablock['data']; |
|---|
| 209 | break; |
|---|
| 210 | |
|---|
| 211 | |
|---|
| 212 | case 0x22: // ID_RIFF_TRAILER |
|---|
| 213 | $metablockRIFFfooter = $metablockRIFFheader.$metablock['data']; |
|---|
| 214 | getid3_lib::IncludeDependency(GETID3_INCLUDEPATH.'module.audio-video.riff.php', __FILE__, true); |
|---|
| 215 | |
|---|
| 216 | $ftell_old = ftell($fd); |
|---|
| 217 | $startoffset = $metablock['offset'] + ($metablock['large_block'] ? 4 : 2); |
|---|
| 218 | $ParsedRIFFfooter = array('avdataend'=>$ThisFileInfo['avdataend'], 'fileformat'=>'riff', 'error'=>array(), 'warning'=>array()); |
|---|
| 219 | $metablock['riff'] = getid3_riff::ParseRIFF($fd, $startoffset, $startoffset + $metablock['size'], $ParsedRIFFfooter); |
|---|
| 220 | fseek($fd, $ftell_old, SEEK_SET); |
|---|
| 221 | |
|---|
| 222 | if (!empty($metablock['riff']['INFO'])) { |
|---|
| 223 | getid3_riff::RIFFcommentsParse($metablock['riff']['INFO'], $metablock['comments']); |
|---|
| 224 | $ThisFileInfo['tags']['riff'] = $metablock['comments']; |
|---|
| 225 | } |
|---|
| 226 | break; |
|---|
| 227 | |
|---|
| 228 | |
|---|
| 229 | case 0x23: // ID_REPLAY_GAIN |
|---|
| 230 | $ThisFileInfo['warning'][] = 'WavPack "Replay Gain" contents not yet handled by getID3() in metablock at offset '.$metablock['offset']; |
|---|
| 231 | break; |
|---|
| 232 | |
|---|
| 233 | |
|---|
| 234 | case 0x24: // ID_CUESHEET |
|---|
| 235 | $ThisFileInfo['warning'][] = 'WavPack "Cuesheet" contents not yet handled by getID3() in metablock at offset '.$metablock['offset']; |
|---|
| 236 | break; |
|---|
| 237 | |
|---|
| 238 | |
|---|
| 239 | case 0x25: // ID_CONFIG_BLOCK |
|---|
| 240 | $metablock['flags_raw'] = getid3_lib::LittleEndian2Int(substr($metablock['data'], 0, 3)); |
|---|
| 241 | |
|---|
| 242 | $metablock['flags']['adobe_mode'] = (bool) ($metablock['flags_raw'] & 0x000001); // "adobe" mode for 32-bit floats |
|---|
| 243 | $metablock['flags']['fast_flag'] = (bool) ($metablock['flags_raw'] & 0x000002); // fast mode |
|---|
| 244 | $metablock['flags']['very_fast_flag'] = (bool) ($metablock['flags_raw'] & 0x000004); // double fast |
|---|
| 245 | $metablock['flags']['high_flag'] = (bool) ($metablock['flags_raw'] & 0x000008); // high quality mode |
|---|
| 246 | $metablock['flags']['very_high_flag'] = (bool) ($metablock['flags_raw'] & 0x000010); // double high (not used yet) |
|---|
| 247 | $metablock['flags']['bitrate_kbps'] = (bool) ($metablock['flags_raw'] & 0x000020); // bitrate is kbps, not bits / sample |
|---|
| 248 | $metablock['flags']['auto_shaping'] = (bool) ($metablock['flags_raw'] & 0x000040); // automatic noise shaping |
|---|
| 249 | $metablock['flags']['shape_override'] = (bool) ($metablock['flags_raw'] & 0x000080); // shaping mode specified |
|---|
| 250 | $metablock['flags']['joint_override'] = (bool) ($metablock['flags_raw'] & 0x000100); // joint-stereo mode specified |
|---|
| 251 | $metablock['flags']['copy_time'] = (bool) ($metablock['flags_raw'] & 0x000200); // copy file-time from source |
|---|
| 252 | $metablock['flags']['create_exe'] = (bool) ($metablock['flags_raw'] & 0x000400); // create executable |
|---|
| 253 | $metablock['flags']['create_wvc'] = (bool) ($metablock['flags_raw'] & 0x000800); // create correction file |
|---|
| 254 | $metablock['flags']['optimize_wvc'] = (bool) ($metablock['flags_raw'] & 0x001000); // maximize bybrid compression |
|---|
| 255 | $metablock['flags']['quality_mode'] = (bool) ($metablock['flags_raw'] & 0x002000); // psychoacoustic quality mode |
|---|
| 256 | $metablock['flags']['raw_flag'] = (bool) ($metablock['flags_raw'] & 0x004000); // raw mode (not implemented yet) |
|---|
| 257 | $metablock['flags']['calc_noise'] = (bool) ($metablock['flags_raw'] & 0x008000); // calc noise in hybrid mode |
|---|
| 258 | $metablock['flags']['lossy_mode'] = (bool) ($metablock['flags_raw'] & 0x010000); // obsolete (for information) |
|---|
| 259 | $metablock['flags']['extra_mode'] = (bool) ($metablock['flags_raw'] & 0x020000); // extra processing mode |
|---|
| 260 | $metablock['flags']['skip_wvx'] = (bool) ($metablock['flags_raw'] & 0x040000); // no wvx stream w/ floats & big ints |
|---|
| 261 | $metablock['flags']['md5_checksum'] = (bool) ($metablock['flags_raw'] & 0x080000); // compute & store MD5 signature |
|---|
| 262 | $metablock['flags']['quiet_mode'] = (bool) ($metablock['flags_raw'] & 0x100000); // don't report progress % |
|---|
| 263 | |
|---|
| 264 | $ThisFileInfo['wavpack']['config_flags'] = $metablock['flags']; |
|---|
| 265 | |
|---|
| 266 | |
|---|
| 267 | if ($ThisFileInfo['wavpack']['blockheader']['flags']['hybrid']) { |
|---|
| 268 | @$ThisFileInfo['audio']['encoder_options'] .= ' -b???'; |
|---|
| 269 | } |
|---|
| 270 | @$ThisFileInfo['audio']['encoder_options'] .= ($metablock['flags']['adobe_mode'] ? ' -a' : ''); |
|---|
| 271 | @$ThisFileInfo['audio']['encoder_options'] .= ($metablock['flags']['optimize_wvc'] ? ' -cc' : ''); |
|---|
| 272 | @$ThisFileInfo['audio']['encoder_options'] .= ($metablock['flags']['create_exe'] ? ' -e' : ''); |
|---|
| 273 | @$ThisFileInfo['audio']['encoder_options'] .= ($metablock['flags']['fast_flag'] ? ' -f' : ''); |
|---|
| 274 | @$ThisFileInfo['audio']['encoder_options'] .= ($metablock['flags']['joint_override'] ? ' -j?' : ''); |
|---|
| 275 | @$ThisFileInfo['audio']['encoder_options'] .= ($metablock['flags']['high_flag'] ? ' -h' : ''); |
|---|
| 276 | @$ThisFileInfo['audio']['encoder_options'] .= ($metablock['flags']['md5_checksum'] ? ' -m' : ''); |
|---|
| 277 | @$ThisFileInfo['audio']['encoder_options'] .= ($metablock['flags']['calc_noise'] ? ' -n' : ''); |
|---|
| 278 | @$ThisFileInfo['audio']['encoder_options'] .= ($metablock['flags']['shape_override'] ? ' -s?' : ''); |
|---|
| 279 | @$ThisFileInfo['audio']['encoder_options'] .= ($metablock['flags']['extra_mode'] ? ' -x?' : ''); |
|---|
| 280 | if (@$ThisFileInfo['audio']['encoder_options']) { |
|---|
| 281 | $ThisFileInfo['audio']['encoder_options'] = trim(@$ThisFileInfo['audio']['encoder_options']); |
|---|
| 282 | } |
|---|
| 283 | elseif (isset($ThisFileInfo['audio']['encoder_options'])) { |
|---|
| 284 | unset($ThisFileInfo['audio']['encoder_options']); |
|---|
| 285 | } |
|---|
| 286 | break; |
|---|
| 287 | |
|---|
| 288 | |
|---|
| 289 | case 0x26: // ID_MD5_CHECKSUM |
|---|
| 290 | if (strlen($metablock['data']) == 16) { |
|---|
| 291 | $ThisFileInfo['md5_data_source'] = strtolower(getid3_lib::PrintHexBytes($metablock['data'], true, false, false)); |
|---|
| 292 | } else { |
|---|
| 293 | $ThisFileInfo['warning'][] = 'Expecting 16 bytes of WavPack "MD5 Checksum" in metablock at offset '.$metablock['offset'].', but found '.strlen($metablock['data']).' bytes'; |
|---|
| 294 | } |
|---|
| 295 | break; |
|---|
| 296 | |
|---|
| 297 | |
|---|
| 298 | case 0x00: // ID_DUMMY |
|---|
| 299 | case 0x01: // ID_ENCODER_INFO |
|---|
| 300 | case 0x02: // ID_DECORR_TERMS |
|---|
| 301 | case 0x03: // ID_DECORR_WEIGHTS |
|---|
| 302 | case 0x04: // ID_DECORR_SAMPLES |
|---|
| 303 | case 0x05: // ID_ENTROPY_VARS |
|---|
| 304 | case 0x06: // ID_HYBRID_PROFILE |
|---|
| 305 | case 0x07: // ID_SHAPING_WEIGHTS |
|---|
| 306 | case 0x08: // ID_FLOAT_INFO |
|---|
| 307 | case 0x09: // ID_INT32_INFO |
|---|
| 308 | case 0x0A: // ID_WV_BITSTREAM |
|---|
| 309 | case 0x0B: // ID_WVC_BITSTREAM |
|---|
| 310 | case 0x0C: // ID_WVX_BITSTREAM |
|---|
| 311 | case 0x0D: // ID_CHANNEL_INFO |
|---|
| 312 | unset($metablock); |
|---|
| 313 | break; |
|---|
| 314 | } |
|---|
| 315 | |
|---|
| 316 | } |
|---|
| 317 | if (!empty($metablock)) { |
|---|
| 318 | $ThisFileInfo['wavpack']['metablocks'][] = $metablock; |
|---|
| 319 | } |
|---|
| 320 | |
|---|
| 321 | } |
|---|
| 322 | |
|---|
| 323 | } |
|---|
| 324 | |
|---|
| 325 | $ThisFileInfo['audio']['encoder'] = 'WavPack v'.$ThisFileInfo['wavpack']['blockheader']['major_version'].'.'.str_pad($ThisFileInfo['wavpack']['blockheader']['minor_version'], 2, '0', STR_PAD_LEFT); |
|---|
| 326 | $ThisFileInfo['audio']['bits_per_sample'] = $ThisFileInfo['wavpack']['blockheader']['flags']['bytes_per_sample'] * 8; |
|---|
| 327 | $ThisFileInfo['audio']['channels'] = ($ThisFileInfo['wavpack']['blockheader']['flags']['mono'] ? 1 : 2); |
|---|
| 328 | |
|---|
| 329 | if (@$ThisFileInfo['playtime_seconds']) { |
|---|
| 330 | |
|---|
| 331 | $ThisFileInfo['audio']['bitrate'] = (($ThisFileInfo['avdataend'] - $ThisFileInfo['avdataoffset']) * 8) / $ThisFileInfo['playtime_seconds']; |
|---|
| 332 | |
|---|
| 333 | } else { |
|---|
| 334 | |
|---|
| 335 | $ThisFileInfo['audio']['dataformat'] = 'wvc'; |
|---|
| 336 | |
|---|
| 337 | } |
|---|
| 338 | |
|---|
| 339 | return true; |
|---|
| 340 | } |
|---|
| 341 | |
|---|
| 342 | |
|---|
| 343 | function WavPackMetablockNameLookup(&$id) { |
|---|
| 344 | static $WavPackMetablockNameLookup = array( |
|---|
| 345 | 0x00 => 'Dummy', |
|---|
| 346 | 0x01 => 'Encoder Info', |
|---|
| 347 | 0x02 => 'Decorrelation Terms', |
|---|
| 348 | 0x03 => 'Decorrelation Weights', |
|---|
| 349 | 0x04 => 'Decorrelation Samples', |
|---|
| 350 | 0x05 => 'Entropy Variables', |
|---|
| 351 | 0x06 => 'Hybrid Profile', |
|---|
| 352 | 0x07 => 'Shaping Weights', |
|---|
| 353 | 0x08 => 'Float Info', |
|---|
| 354 | 0x09 => 'Int32 Info', |
|---|
| 355 | 0x0A => 'WV Bitstream', |
|---|
| 356 | 0x0B => 'WVC Bitstream', |
|---|
| 357 | 0x0C => 'WVX Bitstream', |
|---|
| 358 | 0x0D => 'Channel Info', |
|---|
| 359 | 0x21 => 'RIFF header', |
|---|
| 360 | 0x22 => 'RIFF trailer', |
|---|
| 361 | 0x23 => 'Replay Gain', |
|---|
| 362 | 0x24 => 'Cuesheet', |
|---|
| 363 | 0x25 => 'Config Block', |
|---|
| 364 | 0x26 => 'MD5 Checksum', |
|---|
| 365 | ); |
|---|
| 366 | return (@$WavPackMetablockNameLookup[$id]); |
|---|
| 367 | } |
|---|
| 368 | |
|---|
| 369 | } |
|---|
| 370 | |
|---|
| 371 | |
|---|
| 372 | ?> |
|---|
