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Code source de LifeType 1.2.4 |
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-video.real.php // 11 // module for analyzing Real Audio/Video files // 12 // dependencies: module.audio-video.riff.php // 13 // /// 14 ///////////////////////////////////////////////////////////////// 15 16 getid3_lib::IncludeDependency(GETID3_INCLUDEPATH.'module.audio-video.riff.php', __FILE__, true); 17 18 class getid3_real 19 { 20 21 function getid3_real(&$fd, &$ThisFileInfo) { 22 $ThisFileInfo['fileformat'] = 'real'; 23 $ThisFileInfo['bitrate'] = 0; 24 $ThisFileInfo['playtime_seconds'] = 0; 25 26 fseek($fd, $ThisFileInfo['avdataoffset'], SEEK_SET); 27 $ChunkCounter = 0; 28 while (ftell($fd) < $ThisFileInfo['avdataend']) { 29 $ChunkData = fread($fd, 8); 30 $ChunkName = substr($ChunkData, 0, 4); 31 $ChunkSize = getid3_lib::BigEndian2Int(substr($ChunkData, 4, 4)); 32 33 if ($ChunkName == '.ra'."\xFD") { 34 $ChunkData .= fread($fd, $ChunkSize - 8); 35 if ($this->ParseOldRAheader(substr($ChunkData, 0, 128), $ThisFileInfo['real']['old_ra_header'])) { 36 $ThisFileInfo['audio']['dataformat'] = 'real'; 37 $ThisFileInfo['audio']['lossless'] = false; 38 $ThisFileInfo['audio']['sample_rate'] = $ThisFileInfo['real']['old_ra_header']['sample_rate']; 39 $ThisFileInfo['audio']['bits_per_sample'] = $ThisFileInfo['real']['old_ra_header']['bits_per_sample']; 40 $ThisFileInfo['audio']['channels'] = $ThisFileInfo['real']['old_ra_header']['channels']; 41 42 $ThisFileInfo['playtime_seconds'] = 60 * ($ThisFileInfo['real']['old_ra_header']['audio_bytes'] / $ThisFileInfo['real']['old_ra_header']['bytes_per_minute']); 43 $ThisFileInfo['audio']['bitrate'] = 8 * ($ThisFileInfo['real']['old_ra_header']['audio_bytes'] / $ThisFileInfo['playtime_seconds']); 44 $ThisFileInfo['audio']['codec'] = $this->RealAudioCodecFourCClookup($ThisFileInfo['real']['old_ra_header']['fourcc'], $ThisFileInfo['audio']['bitrate']); 45 46 foreach ($ThisFileInfo['real']['old_ra_header']['comments'] as $key => $valuearray) { 47 if (strlen(trim($valuearray[0])) > 0) { 48 $ThisFileInfo['real']['comments'][$key][] = trim($valuearray[0]); 49 } 50 } 51 return true; 52 } 53 $ThisFileInfo['error'][] = 'There was a problem parsing this RealAudio file. Please submit it for analysis to http://www.getid3.org/upload/ or info@getid3.org'; 54 unset($ThisFileInfo['bitrate']); 55 unset($ThisFileInfo['playtime_seconds']); 56 return false; 57 } 58 59 // shortcut 60 $ThisFileInfo['real']['chunks'][$ChunkCounter] = array(); 61 $thisfile_real_chunks_currentchunk = &$ThisFileInfo['real']['chunks'][$ChunkCounter]; 62 63 $thisfile_real_chunks_currentchunk['name'] = $ChunkName; 64 $thisfile_real_chunks_currentchunk['offset'] = ftell($fd) - 8; 65 $thisfile_real_chunks_currentchunk['length'] = $ChunkSize; 66 if (($thisfile_real_chunks_currentchunk['offset'] + $thisfile_real_chunks_currentchunk['length']) > $ThisFileInfo['avdataend']) { 67 $ThisFileInfo['warning'][] = 'Chunk "'.$thisfile_real_chunks_currentchunk['name'].'" at offset '.$thisfile_real_chunks_currentchunk['offset'].' claims to be '.$thisfile_real_chunks_currentchunk['length'].' bytes long, which is beyond end of file'; 68 return false; 69 } 70 71 if ($ChunkSize > (GETID3_FREAD_BUFFER_SIZE + 8)) { 72 73 $ChunkData .= fread($fd, GETID3_FREAD_BUFFER_SIZE - 8); 74 fseek($fd, $thisfile_real_chunks_currentchunk['offset'] + $ChunkSize, SEEK_SET); 75 76 } else { 77 78 $ChunkData .= fread($fd, $ChunkSize - 8); 79 80 } 81 $offset = 8; 82 83 switch ($ChunkName) { 84 85 case '.RMF': // RealMedia File Header 86 $thisfile_real_chunks_currentchunk['object_version'] = getid3_lib::BigEndian2Int(substr($ChunkData, $offset, 2)); 87 $offset += 2; 88 switch ($thisfile_real_chunks_currentchunk['object_version']) { 89 90 case 0: 91 $thisfile_real_chunks_currentchunk['file_version'] = getid3_lib::BigEndian2Int(substr($ChunkData, $offset, 4)); 92 $offset += 4; 93 $thisfile_real_chunks_currentchunk['headers_count'] = getid3_lib::BigEndian2Int(substr($ChunkData, $offset, 4)); 94 $offset += 4; 95 break; 96 97 default: 98 //$ThisFileInfo['warning'][] = 'Expected .RMF-object_version to be "0", actual value is "'.$thisfile_real_chunks_currentchunk['object_version'].'" (should not be a problem)'; 99 break; 100 101 } 102 break; 103 104 105 case 'PROP': // Properties Header 106 $thisfile_real_chunks_currentchunk['object_version'] = getid3_lib::BigEndian2Int(substr($ChunkData, $offset, 2)); 107 $offset += 2; 108 if ($thisfile_real_chunks_currentchunk['object_version'] == 0) { 109 $thisfile_real_chunks_currentchunk['max_bit_rate'] = getid3_lib::BigEndian2Int(substr($ChunkData, $offset, 4)); 110 $offset += 4; 111 $thisfile_real_chunks_currentchunk['avg_bit_rate'] = getid3_lib::BigEndian2Int(substr($ChunkData, $offset, 4)); 112 $offset += 4; 113 $thisfile_real_chunks_currentchunk['max_packet_size'] = getid3_lib::BigEndian2Int(substr($ChunkData, $offset, 4)); 114 $offset += 4; 115 $thisfile_real_chunks_currentchunk['avg_packet_size'] = getid3_lib::BigEndian2Int(substr($ChunkData, $offset, 4)); 116 $offset += 4; 117 $thisfile_real_chunks_currentchunk['num_packets'] = getid3_lib::BigEndian2Int(substr($ChunkData, $offset, 4)); 118 $offset += 4; 119 $thisfile_real_chunks_currentchunk['duration'] = getid3_lib::BigEndian2Int(substr($ChunkData, $offset, 4)); 120 $offset += 4; 121 $thisfile_real_chunks_currentchunk['preroll'] = getid3_lib::BigEndian2Int(substr($ChunkData, $offset, 4)); 122 $offset += 4; 123 $thisfile_real_chunks_currentchunk['index_offset'] = getid3_lib::BigEndian2Int(substr($ChunkData, $offset, 4)); 124 $offset += 4; 125 $thisfile_real_chunks_currentchunk['data_offset'] = getid3_lib::BigEndian2Int(substr($ChunkData, $offset, 4)); 126 $offset += 4; 127 $thisfile_real_chunks_currentchunk['num_streams'] = getid3_lib::BigEndian2Int(substr($ChunkData, $offset, 2)); 128 $offset += 2; 129 $thisfile_real_chunks_currentchunk['flags_raw'] = getid3_lib::BigEndian2Int(substr($ChunkData, $offset, 2)); 130 $offset += 2; 131 $ThisFileInfo['playtime_seconds'] = $thisfile_real_chunks_currentchunk['duration'] / 1000; 132 if ($thisfile_real_chunks_currentchunk['duration'] > 0) { 133 $ThisFileInfo['bitrate'] += $thisfile_real_chunks_currentchunk['avg_bit_rate']; 134 } 135 $thisfile_real_chunks_currentchunk['flags']['save_enabled'] = (bool) ($thisfile_real_chunks_currentchunk['flags_raw'] & 0x0001); 136 $thisfile_real_chunks_currentchunk['flags']['perfect_play'] = (bool) ($thisfile_real_chunks_currentchunk['flags_raw'] & 0x0002); 137 $thisfile_real_chunks_currentchunk['flags']['live_broadcast'] = (bool) ($thisfile_real_chunks_currentchunk['flags_raw'] & 0x0004); 138 } 139 break; 140 141 case 'MDPR': // Media Properties Header 142 $thisfile_real_chunks_currentchunk['object_version'] = getid3_lib::BigEndian2Int(substr($ChunkData, $offset, 2)); 143 $offset += 2; 144 if ($thisfile_real_chunks_currentchunk['object_version'] == 0) { 145 $thisfile_real_chunks_currentchunk['stream_number'] = getid3_lib::BigEndian2Int(substr($ChunkData, $offset, 2)); 146 $offset += 2; 147 $thisfile_real_chunks_currentchunk['max_bit_rate'] = getid3_lib::BigEndian2Int(substr($ChunkData, $offset, 4)); 148 $offset += 4; 149 $thisfile_real_chunks_currentchunk['avg_bit_rate'] = getid3_lib::BigEndian2Int(substr($ChunkData, $offset, 4)); 150 $offset += 4; 151 $thisfile_real_chunks_currentchunk['max_packet_size'] = getid3_lib::BigEndian2Int(substr($ChunkData, $offset, 4)); 152 $offset += 4; 153 $thisfile_real_chunks_currentchunk['avg_packet_size'] = getid3_lib::BigEndian2Int(substr($ChunkData, $offset, 4)); 154 $offset += 4; 155 $thisfile_real_chunks_currentchunk['start_time'] = getid3_lib::BigEndian2Int(substr($ChunkData, $offset, 4)); 156 $offset += 4; 157 $thisfile_real_chunks_currentchunk['preroll'] = getid3_lib::BigEndian2Int(substr($ChunkData, $offset, 4)); 158 $offset += 4; 159 $thisfile_real_chunks_currentchunk['duration'] = getid3_lib::BigEndian2Int(substr($ChunkData, $offset, 4)); 160 $offset += 4; 161 $thisfile_real_chunks_currentchunk['stream_name_size'] = getid3_lib::BigEndian2Int(substr($ChunkData, $offset, 1)); 162 $offset += 1; 163 $thisfile_real_chunks_currentchunk['stream_name'] = substr($ChunkData, $offset, $thisfile_real_chunks_currentchunk['stream_name_size']); 164 $offset += $thisfile_real_chunks_currentchunk['stream_name_size']; 165 $thisfile_real_chunks_currentchunk['mime_type_size'] = getid3_lib::BigEndian2Int(substr($ChunkData, $offset, 1)); 166 $offset += 1; 167 $thisfile_real_chunks_currentchunk['mime_type'] = substr($ChunkData, $offset, $thisfile_real_chunks_currentchunk['mime_type_size']); 168 $offset += $thisfile_real_chunks_currentchunk['mime_type_size']; 169 $thisfile_real_chunks_currentchunk['type_specific_len'] = getid3_lib::BigEndian2Int(substr($ChunkData, $offset, 4)); 170 $offset += 4; 171 $thisfile_real_chunks_currentchunk['type_specific_data'] = substr($ChunkData, $offset, $thisfile_real_chunks_currentchunk['type_specific_len']); 172 $offset += $thisfile_real_chunks_currentchunk['type_specific_len']; 173 174 // shortcut 175 $thisfile_real_chunks_currentchunk_typespecificdata = &$thisfile_real_chunks_currentchunk['type_specific_data']; 176 177 switch ($thisfile_real_chunks_currentchunk['mime_type']) { 178 case 'video/x-pn-realvideo': 179 case 'video/x-pn-multirate-realvideo': 180 // http://www.freelists.org/archives/matroska-devel/07-2003/msg00010.html 181 182 // shortcut 183 $thisfile_real_chunks_currentchunk['video_info'] = array(); 184 $thisfile_real_chunks_currentchunk_videoinfo = &$thisfile_real_chunks_currentchunk['video_info']; 185 186 $thisfile_real_chunks_currentchunk_videoinfo['dwSize'] = getid3_lib::BigEndian2Int(substr($thisfile_real_chunks_currentchunk_typespecificdata, 0, 4)); 187 $thisfile_real_chunks_currentchunk_videoinfo['fourcc1'] = substr($thisfile_real_chunks_currentchunk_typespecificdata, 4, 4); 188 $thisfile_real_chunks_currentchunk_videoinfo['fourcc2'] = substr($thisfile_real_chunks_currentchunk_typespecificdata, 8, 4); 189 $thisfile_real_chunks_currentchunk_videoinfo['width'] = getid3_lib::BigEndian2Int(substr($thisfile_real_chunks_currentchunk_typespecificdata, 12, 2)); 190 $thisfile_real_chunks_currentchunk_videoinfo['height'] = getid3_lib::BigEndian2Int(substr($thisfile_real_chunks_currentchunk_typespecificdata, 14, 2)); 191 $thisfile_real_chunks_currentchunk_videoinfo['bits_per_sample'] = getid3_lib::BigEndian2Int(substr($thisfile_real_chunks_currentchunk_typespecificdata, 16, 2)); 192 //$thisfile_real_chunks_currentchunk_videoinfo['unknown1'] = getid3_lib::BigEndian2Int(substr($thisfile_real_chunks_currentchunk_typespecificdata, 18, 2)); 193 //$thisfile_real_chunks_currentchunk_videoinfo['unknown2'] = getid3_lib::BigEndian2Int(substr($thisfile_real_chunks_currentchunk_typespecificdata, 20, 2)); 194 $thisfile_real_chunks_currentchunk_videoinfo['frames_per_second'] = getid3_lib::BigEndian2Int(substr($thisfile_real_chunks_currentchunk_typespecificdata, 22, 2)); 195 //$thisfile_real_chunks_currentchunk_videoinfo['unknown3'] = getid3_lib::BigEndian2Int(substr($thisfile_real_chunks_currentchunk_typespecificdata, 24, 2)); 196 //$thisfile_real_chunks_currentchunk_videoinfo['unknown4'] = getid3_lib::BigEndian2Int(substr($thisfile_real_chunks_currentchunk_typespecificdata, 26, 2)); 197 //$thisfile_real_chunks_currentchunk_videoinfo['unknown5'] = getid3_lib::BigEndian2Int(substr($thisfile_real_chunks_currentchunk_typespecificdata, 28, 2)); 198 //$thisfile_real_chunks_currentchunk_videoinfo['unknown6'] = getid3_lib::BigEndian2Int(substr($thisfile_real_chunks_currentchunk_typespecificdata, 30, 2)); 199 //$thisfile_real_chunks_currentchunk_videoinfo['unknown7'] = getid3_lib::BigEndian2Int(substr($thisfile_real_chunks_currentchunk_typespecificdata, 32, 2)); 200 //$thisfile_real_chunks_currentchunk_videoinfo['unknown8'] = getid3_lib::BigEndian2Int(substr($thisfile_real_chunks_currentchunk_typespecificdata, 34, 2)); 201 //$thisfile_real_chunks_currentchunk_videoinfo['unknown9'] = getid3_lib::BigEndian2Int(substr($thisfile_real_chunks_currentchunk_typespecificdata, 36, 2)); 202 203 $thisfile_real_chunks_currentchunk_videoinfo['codec'] = getid3_riff::RIFFfourccLookup($thisfile_real_chunks_currentchunk_videoinfo['fourcc2']); 204 205 $ThisFileInfo['video']['resolution_x'] = $thisfile_real_chunks_currentchunk_videoinfo['width']; 206 $ThisFileInfo['video']['resolution_y'] = $thisfile_real_chunks_currentchunk_videoinfo['height']; 207 $ThisFileInfo['video']['frame_rate'] = (float) $thisfile_real_chunks_currentchunk_videoinfo['frames_per_second']; 208 $ThisFileInfo['video']['codec'] = $thisfile_real_chunks_currentchunk_videoinfo['codec']; 209 $ThisFileInfo['video']['bits_per_sample'] = $thisfile_real_chunks_currentchunk_videoinfo['bits_per_sample']; 210 break; 211 212 case 'audio/x-pn-realaudio': 213 case 'audio/x-pn-multirate-realaudio': 214 $this->ParseOldRAheader($thisfile_real_chunks_currentchunk_typespecificdata, $thisfile_real_chunks_currentchunk['parsed_audio_data']); 215 216 $ThisFileInfo['audio']['sample_rate'] = $thisfile_real_chunks_currentchunk['parsed_audio_data']['sample_rate']; 217 $ThisFileInfo['audio']['bits_per_sample'] = $thisfile_real_chunks_currentchunk['parsed_audio_data']['bits_per_sample']; 218 $ThisFileInfo['audio']['channels'] = $thisfile_real_chunks_currentchunk['parsed_audio_data']['channels']; 219 if (!empty($ThisFileInfo['audio']['dataformat'])) { 220 foreach ($ThisFileInfo['audio'] as $key => $value) { 221 if ($key != 'streams') { 222 $ThisFileInfo['audio']['streams'][$thisfile_real_chunks_currentchunk['stream_number']][$key] = $value; 223 } 224 } 225 } 226 break; 227 228 case 'logical-fileinfo': 229 // shortcut 230 $thisfile_real_chunks_currentchunk['logical_fileinfo'] = array(); 231 $thisfile_real_chunks_currentchunk_logicalfileinfo = &$thisfile_real_chunks_currentchunk['logical_fileinfo']; 232 233 $thisfile_real_chunks_currentchunk_logicalfileinfo_offset = 0; 234 $thisfile_real_chunks_currentchunk_logicalfileinfo['logical_fileinfo_length'] = getid3_lib::BigEndian2Int(substr($thisfile_real_chunks_currentchunk_typespecificdata, $thisfile_real_chunks_currentchunk_logicalfileinfo_offset, 4)); 235 $thisfile_real_chunks_currentchunk_logicalfileinfo_offset += 4; 236 237 //$thisfile_real_chunks_currentchunk_logicalfileinfo['unknown1'] = getid3_lib::BigEndian2Int(substr($thisfile_real_chunks_currentchunk_typespecificdata, $thisfile_real_chunks_currentchunk_logicalfileinfo_offset, 4)); 238 $thisfile_real_chunks_currentchunk_logicalfileinfo_offset += 4; 239 240 $thisfile_real_chunks_currentchunk_logicalfileinfo['num_tags'] = getid3_lib::BigEndian2Int(substr($thisfile_real_chunks_currentchunk_typespecificdata, $thisfile_real_chunks_currentchunk_logicalfileinfo_offset, 4)); 241 $thisfile_real_chunks_currentchunk_logicalfileinfo_offset += 4; 242 243 //$thisfile_real_chunks_currentchunk_logicalfileinfo['unknown2'] = getid3_lib::BigEndian2Int(substr($thisfile_real_chunks_currentchunk_typespecificdata, $thisfile_real_chunks_currentchunk_logicalfileinfo_offset, 4)); 244 $thisfile_real_chunks_currentchunk_logicalfileinfo_offset += 4; 245 246 //$thisfile_real_chunks_currentchunk_logicalfileinfo['d'] = getid3_lib::BigEndian2Int(substr($thisfile_real_chunks_currentchunk_typespecificdata, $thisfile_real_chunks_currentchunk_logicalfileinfo_offset, 1)); 247 248 //$thisfile_real_chunks_currentchunk_logicalfileinfo['one_type'] = getid3_lib::BigEndian2Int(substr($thisfile_real_chunks_currentchunk_typespecificdata, $thisfile_real_chunks_currentchunk_logicalfileinfo_offset, 4)); 249 //$thisfile_real_chunks_currentchunk_logicalfileinfo_thislength = getid3_lib::BigEndian2Int(substr($thisfile_real_chunks_currentchunk_typespecificdata, 4 + $thisfile_real_chunks_currentchunk_logicalfileinfo_offset, 2)); 250 //$thisfile_real_chunks_currentchunk_logicalfileinfo['one'] = substr($thisfile_real_chunks_currentchunk_typespecificdata, 6 + $thisfile_real_chunks_currentchunk_logicalfileinfo_offset, $thisfile_real_chunks_currentchunk_logicalfileinfo_thislength); 251 //$thisfile_real_chunks_currentchunk_logicalfileinfo_offset += (6 + $thisfile_real_chunks_currentchunk_logicalfileinfo_thislength); 252 253 break; 254 255 } 256 257 258 if (empty($ThisFileInfo['playtime_seconds'])) { 259 $ThisFileInfo['playtime_seconds'] = max($ThisFileInfo['playtime_seconds'], ($thisfile_real_chunks_currentchunk['duration'] + $thisfile_real_chunks_currentchunk['start_time']) / 1000); 260 } 261 if ($thisfile_real_chunks_currentchunk['duration'] > 0) { 262 switch ($thisfile_real_chunks_currentchunk['mime_type']) { 263 case 'audio/x-pn-realaudio': 264 case 'audio/x-pn-multirate-realaudio': 265 $ThisFileInfo['audio']['bitrate'] = (isset($ThisFileInfo['audio']['bitrate']) ? $ThisFileInfo['audio']['bitrate'] : 0) + $thisfile_real_chunks_currentchunk['avg_bit_rate']; 266 $ThisFileInfo['audio']['codec'] = $this->RealAudioCodecFourCClookup($thisfile_real_chunks_currentchunk['parsed_audio_data']['fourcc'], $ThisFileInfo['audio']['bitrate']); 267 $ThisFileInfo['audio']['dataformat'] = 'real'; 268 $ThisFileInfo['audio']['lossless'] = false; 269 break; 270 271 case 'video/x-pn-realvideo': 272 case 'video/x-pn-multirate-realvideo': 273 $ThisFileInfo['video']['bitrate'] = (isset($ThisFileInfo['video']['bitrate']) ? $ThisFileInfo['video']['bitrate'] : 0) + $thisfile_real_chunks_currentchunk['avg_bit_rate']; 274 $ThisFileInfo['video']['bitrate_mode'] = 'cbr'; 275 $ThisFileInfo['video']['dataformat'] = 'real'; 276 $ThisFileInfo['video']['lossless'] = false; 277 $ThisFileInfo['video']['pixel_aspect_ratio'] = (float) 1; 278 break; 279 280 case 'audio/x-ralf-mpeg4-generic': 281 $ThisFileInfo['audio']['bitrate'] = (isset($ThisFileInfo['audio']['bitrate']) ? $ThisFileInfo['audio']['bitrate'] : 0) + $thisfile_real_chunks_currentchunk['avg_bit_rate']; 282 $ThisFileInfo['audio']['codec'] = 'RealAudio Lossless'; 283 $ThisFileInfo['audio']['dataformat'] = 'real'; 284 $ThisFileInfo['audio']['lossless'] = true; 285 break; 286 } 287 $ThisFileInfo['bitrate'] = (isset($ThisFileInfo['video']['bitrate']) ? $ThisFileInfo['video']['bitrate'] : 0) + (isset($ThisFileInfo['audio']['bitrate']) ? $ThisFileInfo['audio']['bitrate'] : 0); 288 } 289 } 290 break; 291 292 case 'CONT': // Content Description Header (text comments) 293 $thisfile_real_chunks_currentchunk['object_version'] = getid3_lib::BigEndian2Int(substr($ChunkData, $offset, 2)); 294 $offset += 2; 295 if ($thisfile_real_chunks_currentchunk['object_version'] == 0) { 296 $thisfile_real_chunks_currentchunk['title_len'] = getid3_lib::BigEndian2Int(substr($ChunkData, $offset, 2)); 297 $offset += 2; 298 $thisfile_real_chunks_currentchunk['title'] = (string) substr($ChunkData, $offset, $thisfile_real_chunks_currentchunk['title_len']); 299 $offset += $thisfile_real_chunks_currentchunk['title_len']; 300 301 $thisfile_real_chunks_currentchunk['artist_len'] = getid3_lib::BigEndian2Int(substr($ChunkData, $offset, 2)); 302 $offset += 2; 303 $thisfile_real_chunks_currentchunk['artist'] = (string) substr($ChunkData, $offset, $thisfile_real_chunks_currentchunk['artist_len']); 304 $offset += $thisfile_real_chunks_currentchunk['artist_len']; 305 306 $thisfile_real_chunks_currentchunk['copyright_len'] = getid3_lib::BigEndian2Int(substr($ChunkData, $offset, 2)); 307 $offset += 2; 308 $thisfile_real_chunks_currentchunk['copyright'] = (string) substr($ChunkData, $offset, $thisfile_real_chunks_currentchunk['copyright_len']); 309 $offset += $thisfile_real_chunks_currentchunk['copyright_len']; 310 311 $thisfile_real_chunks_currentchunk['comment_len'] = getid3_lib::BigEndian2Int(substr($ChunkData, $offset, 2)); 312 $offset += 2; 313 $thisfile_real_chunks_currentchunk['comment'] = (string) substr($ChunkData, $offset, $thisfile_real_chunks_currentchunk['comment_len']); 314 $offset += $thisfile_real_chunks_currentchunk['comment_len']; 315 316 317 $commentkeystocopy = array('title'=>'title', 'artist'=>'artist', 'copyright'=>'copyright', 'comment'=>'comment'); 318 foreach ($commentkeystocopy as $key => $val) { 319 if ($thisfile_real_chunks_currentchunk[$key]) { 320 $ThisFileInfo['real']['comments'][$val][] = trim($thisfile_real_chunks_currentchunk[$key]); 321 } 322 } 323 324 } 325 break; 326 327 328 case 'DATA': // Data Chunk Header 329 // do nothing 330 break; 331 332 case 'INDX': // Index Section Header 333 $thisfile_real_chunks_currentchunk['object_version'] = getid3_lib::BigEndian2Int(substr($ChunkData, $offset, 2)); 334 $offset += 2; 335 if ($thisfile_real_chunks_currentchunk['object_version'] == 0) { 336 $thisfile_real_chunks_currentchunk['num_indices'] = getid3_lib::BigEndian2Int(substr($ChunkData, $offset, 4)); 337 $offset += 4; 338 $thisfile_real_chunks_currentchunk['stream_number'] = getid3_lib::BigEndian2Int(substr($ChunkData, $offset, 2)); 339 $offset += 2; 340 $thisfile_real_chunks_currentchunk['next_index_header'] = getid3_lib::BigEndian2Int(substr($ChunkData, $offset, 4)); 341 $offset += 4; 342 343 if ($thisfile_real_chunks_currentchunk['next_index_header'] == 0) { 344 // last index chunk found, ignore rest of file 345 break 2; 346 } else { 347 // non-last index chunk, seek to next index chunk (skipping actual index data) 348 fseek($fd, $thisfile_real_chunks_currentchunk['next_index_header'], SEEK_SET); 349 } 350 } 351 break; 352 353 default: 354 $ThisFileInfo['warning'][] = 'Unhandled RealMedia chunk "'.$ChunkName.'" at offset '.$thisfile_real_chunks_currentchunk['offset']; 355 break; 356 } 357 $ChunkCounter++; 358 } 359 360 if (!empty($ThisFileInfo['audio']['streams'])) { 361 $ThisFileInfo['audio']['bitrate'] = 0; 362 foreach ($ThisFileInfo['audio']['streams'] as $key => $valuearray) { 363 $ThisFileInfo['audio']['bitrate'] += $valuearray['bitrate']; 364 } 365 } 366 367 return true; 368 } 369 370 371 function ParseOldRAheader($OldRAheaderData, &$ParsedArray) { 372 // http://www.freelists.org/archives/matroska-devel/07-2003/msg00010.html 373 374 $ParsedArray = array(); 375 $ParsedArray['magic'] = substr($OldRAheaderData, 0, 4); 376 if ($ParsedArray['magic'] != '.ra'."\xFD") { 377 return false; 378 } 379 $ParsedArray['version1'] = getid3_lib::BigEndian2Int(substr($OldRAheaderData, 4, 2)); 380 381 if ($ParsedArray['version1'] < 3) { 382 383 return false; 384 385 } elseif ($ParsedArray['version1'] == 3) { 386 387 $ParsedArray['fourcc1'] = '.ra3'; 388 $ParsedArray['bits_per_sample'] = 16; // hard-coded for old versions? 389 $ParsedArray['sample_rate'] = 8000; // hard-coded for old versions? 390 391 $ParsedArray['header_size'] = getid3_lib::BigEndian2Int(substr($OldRAheaderData, 6, 2)); 392 $ParsedArray['channels'] = getid3_lib::BigEndian2Int(substr($OldRAheaderData, 8, 2)); // always 1 (?) 393 //$ParsedArray['unknown1'] = getid3_lib::BigEndian2Int(substr($OldRAheaderData, 10, 2)); 394 //$ParsedArray['unknown2'] = getid3_lib::BigEndian2Int(substr($OldRAheaderData, 12, 2)); 395 //$ParsedArray['unknown3'] = getid3_lib::BigEndian2Int(substr($OldRAheaderData, 14, 2)); 396 $ParsedArray['bytes_per_minute'] = getid3_lib::BigEndian2Int(substr($OldRAheaderData, 16, 2)); 397 $ParsedArray['audio_bytes'] = getid3_lib::BigEndian2Int(substr($OldRAheaderData, 18, 4)); 398 $ParsedArray['comments_raw'] = substr($OldRAheaderData, 22, $ParsedArray['header_size'] - 22 + 1); // not including null terminator 399 400 $commentoffset = 0; 401 $commentlength = getid3_lib::BigEndian2Int(substr($ParsedArray['comments_raw'], $commentoffset++, 1)); 402 $ParsedArray['comments']['title'][] = substr($ParsedArray['comments_raw'], $commentoffset, $commentlength); 403 $commentoffset += $commentlength; 404 405 $commentlength = getid3_lib::BigEndian2Int(substr($ParsedArray['comments_raw'], $commentoffset++, 1)); 406 $ParsedArray['comments']['artist'][] = substr($ParsedArray['comments_raw'], $commentoffset, $commentlength); 407 $commentoffset += $commentlength; 408 409 $commentlength = getid3_lib::BigEndian2Int(substr($ParsedArray['comments_raw'], $commentoffset++, 1)); 410 $ParsedArray['comments']['copyright'][] = substr($ParsedArray['comments_raw'], $commentoffset, $commentlength); 411 $commentoffset += $commentlength; 412 413 $commentoffset++; // final null terminator (?) 414 $commentoffset++; // fourcc length (?) should be 4 415 $ParsedArray['fourcc'] = substr($OldRAheaderData, 23 + $commentoffset, 4); 416 417 } elseif ($ParsedArray['version1'] <= 5) { 418 419 //$ParsedArray['unknown1'] = getid3_lib::BigEndian2Int(substr($OldRAheaderData, 6, 2)); 420 $ParsedArray['fourcc1'] = substr($OldRAheaderData, 8, 4); 421 $ParsedArray['file_size'] = getid3_lib::BigEndian2Int(substr($OldRAheaderData, 12, 4)); 422 $ParsedArray['version2'] = getid3_lib::BigEndian2Int(substr($OldRAheaderData, 16, 2)); 423 $ParsedArray['header_size'] = getid3_lib::BigEndian2Int(substr($OldRAheaderData, 18, 4)); 424 $ParsedArray['codec_flavor_id'] = getid3_lib::BigEndian2Int(substr($OldRAheaderData, 22, 2)); 425 $ParsedArray['coded_frame_size'] = getid3_lib::BigEndian2Int(substr($OldRAheaderData, 24, 4)); 426 $ParsedArray['audio_bytes'] = getid3_lib::BigEndian2Int(substr($OldRAheaderData, 28, 4)); 427 $ParsedArray['bytes_per_minute'] = getid3_lib::BigEndian2Int(substr($OldRAheaderData, 32, 4)); 428 //$ParsedArray['unknown5'] = getid3_lib::BigEndian2Int(substr($OldRAheaderData, 36, 4)); 429 $ParsedArray['sub_packet_h'] = getid3_lib::BigEndian2Int(substr($OldRAheaderData, 40, 2)); 430 $ParsedArray['frame_size'] = getid3_lib::BigEndian2Int(substr($OldRAheaderData, 42, 2)); 431 $ParsedArray['sub_packet_size'] = getid3_lib::BigEndian2Int(substr($OldRAheaderData, 44, 2)); 432 //$ParsedArray['unknown6'] = getid3_lib::BigEndian2Int(substr($OldRAheaderData, 46, 2)); 433 434 switch ($ParsedArray['version1']) { 435 436 case 4: 437 $ParsedArray['sample_rate'] = getid3_lib::BigEndian2Int(substr($OldRAheaderData, 48, 2)); 438 //$ParsedArray['unknown8'] = getid3_lib::BigEndian2Int(substr($OldRAheaderData, 50, 2)); 439 $ParsedArray['bits_per_sample'] = getid3_lib::BigEndian2Int(substr($OldRAheaderData, 52, 2)); 440 $ParsedArray['channels'] = getid3_lib::BigEndian2Int(substr($OldRAheaderData, 54, 2)); 441 $ParsedArray['length_fourcc2'] = getid3_lib::BigEndian2Int(substr($OldRAheaderData, 56, 1)); 442 $ParsedArray['fourcc2'] = substr($OldRAheaderData, 57, 4); 443 $ParsedArray['length_fourcc3'] = getid3_lib::BigEndian2Int(substr($OldRAheaderData, 61, 1)); 444 $ParsedArray['fourcc3'] = substr($OldRAheaderData, 62, 4); 445 //$ParsedArray['unknown9'] = getid3_lib::BigEndian2Int(substr($OldRAheaderData, 66, 1)); 446 //$ParsedArray['unknown10'] = getid3_lib::BigEndian2Int(substr($OldRAheaderData, 67, 2)); 447 $ParsedArray['comments_raw'] = substr($OldRAheaderData, 69, $ParsedArray['header_size'] - 69 + 16); 448 449 $commentoffset = 0; 450 $commentlength = getid3_lib::BigEndian2Int(substr($ParsedArray['comments_raw'], $commentoffset++, 1)); 451 $ParsedArray['comments']['title'][] = substr($ParsedArray['comments_raw'], $commentoffset, $commentlength); 452 $commentoffset += $commentlength; 453 454 $commentlength = getid3_lib::BigEndian2Int(substr($ParsedArray['comments_raw'], $commentoffset++, 1)); 455 $ParsedArray['comments']['artist'][] = substr($ParsedArray['comments_raw'], $commentoffset, $commentlength); 456 $commentoffset += $commentlength; 457 458 $commentlength = getid3_lib::BigEndian2Int(substr($ParsedArray['comments_raw'], $commentoffset++, 1)); 459 $ParsedArray['comments']['copyright'][] = substr($ParsedArray['comments_raw'], $commentoffset, $commentlength); 460 $commentoffset += $commentlength; 461 break; 462 463 case 5: 464 $ParsedArray['sample_rate'] = getid3_lib::BigEndian2Int(substr($OldRAheaderData, 48, 4)); 465 $ParsedArray['sample_rate2'] = getid3_lib::BigEndian2Int(substr($OldRAheaderData, 52, 4)); 466 $ParsedArray['bits_per_sample'] = getid3_lib::BigEndian2Int(substr($OldRAheaderData, 56, 4)); 467 $ParsedArray['channels'] = getid3_lib::BigEndian2Int(substr($OldRAheaderData, 60, 2)); 468 $ParsedArray['genr'] = substr($OldRAheaderData, 62, 4); 469 $ParsedArray['fourcc3'] = substr($OldRAheaderData, 66, 4); 470 $ParsedArray['comments'] = array(); 471 break; 472 } 473 $ParsedArray['fourcc'] = $ParsedArray['fourcc3']; 474 475 } 476 foreach ($ParsedArray['comments'] as $key => $value) { 477 if ($ParsedArray['comments'][$key][0] === false) { 478 $ParsedArray['comments'][$key][0] = ''; 479 } 480 } 481 482 return true; 483 } 484 485 function RealAudioCodecFourCClookup($fourcc, $bitrate) { 486 static $RealAudioCodecFourCClookup = array(); 487 if (empty($RealAudioCodecFourCClookup)) { 488 // http://www.its.msstate.edu/net/real/reports/config/tags.stats 489 // http://www.freelists.org/archives/matroska-devel/06-2003/fullthread18.html 490 491 $RealAudioCodecFourCClookup['14_4'][8000] = 'RealAudio v2 (14.4kbps)'; 492 $RealAudioCodecFourCClookup['14.4'][8000] = 'RealAudio v2 (14.4kbps)'; 493 $RealAudioCodecFourCClookup['lpcJ'][8000] = 'RealAudio v2 (14.4kbps)'; 494 $RealAudioCodecFourCClookup['28_8'][15200] = 'RealAudio v2 (28.8kbps)'; 495 $RealAudioCodecFourCClookup['28.8'][15200] = 'RealAudio v2 (28.8kbps)'; 496 $RealAudioCodecFourCClookup['sipr'][4933] = 'RealAudio v4 (5kbps Voice)'; 497 $RealAudioCodecFourCClookup['sipr'][6444] = 'RealAudio v4 (6.5kbps Voice)'; 498 $RealAudioCodecFourCClookup['sipr'][8444] = 'RealAudio v4 (8.5kbps Voice)'; 499 $RealAudioCodecFourCClookup['sipr'][16000] = 'RealAudio v4 (16kbps Wideband)'; 500 $RealAudioCodecFourCClookup['dnet'][8000] = 'RealAudio v3 (8kbps Music)'; 501 $RealAudioCodecFourCClookup['dnet'][16000] = 'RealAudio v3 (16kbps Music Low Response)'; 502 $RealAudioCodecFourCClookup['dnet'][15963] = 'RealAudio v3 (16kbps Music Mid/High Response)'; 503 $RealAudioCodecFourCClookup['dnet'][20000] = 'RealAudio v3 (20kbps Music Stereo)'; 504 $RealAudioCodecFourCClookup['dnet'][32000] = 'RealAudio v3 (32kbps Music Mono)'; 505 $RealAudioCodecFourCClookup['dnet'][31951] = 'RealAudio v3 (32kbps Music Stereo)'; 506 $RealAudioCodecFourCClookup['dnet'][39965] = 'RealAudio v3 (40kbps Music Mono)'; 507 $RealAudioCodecFourCClookup['dnet'][40000] = 'RealAudio v3 (40kbps Music Stereo)'; 508 $RealAudioCodecFourCClookup['dnet'][79947] = 'RealAudio v3 (80kbps Music Mono)'; 509 $RealAudioCodecFourCClookup['dnet'][80000] = 'RealAudio v3 (80kbps Music Stereo)'; 510 511 $RealAudioCodecFourCClookup['dnet'][0] = 'RealAudio v3'; 512 $RealAudioCodecFourCClookup['sipr'][0] = 'RealAudio v4'; 513 $RealAudioCodecFourCClookup['cook'][0] = 'RealAudio G2'; 514 $RealAudioCodecFourCClookup['atrc'][0] = 'RealAudio 8'; 515 } 516 $roundbitrate = intval(round($bitrate)); 517 if (isset($RealAudioCodecFourCClookup[$fourcc][$roundbitrate])) { 518 return $RealAudioCodecFourCClookup[$fourcc][$roundbitrate]; 519 } elseif (isset($RealAudioCodecFourCClookup[$fourcc][0])) { 520 return $RealAudioCodecFourCClookup[$fourcc][0]; 521 } 522 return $fourcc; 523 } 524 525 } 526 527 528 ?>
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| Généré le : Mon Nov 26 21:04:15 2007 | par Balluche grâce à PHPXref 0.7 |
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