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Diffstat (limited to 'getid3/module.audio-video.real.php')
| -rw-r--r-- | getid3/module.audio-video.real.php | 528 |
1 files changed, 528 insertions, 0 deletions
diff --git a/getid3/module.audio-video.real.php b/getid3/module.audio-video.real.php new file mode 100644 index 0000000..013f478 --- /dev/null +++ b/getid3/module.audio-video.real.php @@ -0,0 +1,528 @@ +<?php +///////////////////////////////////////////////////////////////// +/// getID3() by James Heinrich <info@getid3.org> // +// available at http://getid3.sourceforge.net // +// or http://www.getid3.org // +///////////////////////////////////////////////////////////////// +// See readme.txt for more details // +///////////////////////////////////////////////////////////////// +// // +// module.audio-video.real.php // +// module for analyzing Real Audio/Video files // +// dependencies: module.audio-video.riff.php // +// /// +///////////////////////////////////////////////////////////////// + +getid3_lib::IncludeDependency(GETID3_INCLUDEPATH.'module.audio-video.riff.php', __FILE__, true); + +class getid3_real +{ + + function getid3_real(&$fd, &$ThisFileInfo) { + $ThisFileInfo['fileformat'] = 'real'; + $ThisFileInfo['bitrate'] = 0; + $ThisFileInfo['playtime_seconds'] = 0; + + fseek($fd, $ThisFileInfo['avdataoffset'], SEEK_SET); + $ChunkCounter = 0; + while (ftell($fd) < $ThisFileInfo['avdataend']) { + $ChunkData = fread($fd, 8); + $ChunkName = substr($ChunkData, 0, 4); + $ChunkSize = getid3_lib::BigEndian2Int(substr($ChunkData, 4, 4)); + + if ($ChunkName == '.ra'."\xFD") { + $ChunkData .= fread($fd, $ChunkSize - 8); + if ($this->ParseOldRAheader(substr($ChunkData, 0, 128), $ThisFileInfo['real']['old_ra_header'])) { + $ThisFileInfo['audio']['dataformat'] = 'real'; + $ThisFileInfo['audio']['lossless'] = false; + $ThisFileInfo['audio']['sample_rate'] = $ThisFileInfo['real']['old_ra_header']['sample_rate']; + $ThisFileInfo['audio']['bits_per_sample'] = $ThisFileInfo['real']['old_ra_header']['bits_per_sample']; + $ThisFileInfo['audio']['channels'] = $ThisFileInfo['real']['old_ra_header']['channels']; + + $ThisFileInfo['playtime_seconds'] = 60 * ($ThisFileInfo['real']['old_ra_header']['audio_bytes'] / $ThisFileInfo['real']['old_ra_header']['bytes_per_minute']); + $ThisFileInfo['audio']['bitrate'] = 8 * ($ThisFileInfo['real']['old_ra_header']['audio_bytes'] / $ThisFileInfo['playtime_seconds']); + $ThisFileInfo['audio']['codec'] = $this->RealAudioCodecFourCClookup($ThisFileInfo['real']['old_ra_header']['fourcc'], $ThisFileInfo['audio']['bitrate']); + + foreach ($ThisFileInfo['real']['old_ra_header']['comments'] as $key => $valuearray) { + if (strlen(trim($valuearray[0])) > 0) { + $ThisFileInfo['real']['comments'][$key][] = trim($valuearray[0]); + } + } + return true; + } + $ThisFileInfo['error'][] = 'There was a problem parsing this RealAudio file. Please submit it for analysis to http://www.getid3.org/upload/ or info@getid3.org'; + unset($ThisFileInfo['bitrate']); + unset($ThisFileInfo['playtime_seconds']); + return false; + } + + // shortcut + $ThisFileInfo['real']['chunks'][$ChunkCounter] = array(); + $thisfile_real_chunks_currentchunk = &$ThisFileInfo['real']['chunks'][$ChunkCounter]; + + $thisfile_real_chunks_currentchunk['name'] = $ChunkName; + $thisfile_real_chunks_currentchunk['offset'] = ftell($fd) - 8; + $thisfile_real_chunks_currentchunk['length'] = $ChunkSize; + if (($thisfile_real_chunks_currentchunk['offset'] + $thisfile_real_chunks_currentchunk['length']) > $ThisFileInfo['avdataend']) { + $ThisFileInfo['warning'][] = 'Chunk "'.$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'; + return false; + } + + if ($ChunkSize > (GETID3_FREAD_BUFFER_SIZE + 8)) { + + $ChunkData .= fread($fd, GETID3_FREAD_BUFFER_SIZE - 8); + fseek($fd, $thisfile_real_chunks_currentchunk['offset'] + $ChunkSize, SEEK_SET); + + } elseif(($ChunkSize - 8) > 0) { + + $ChunkData .= fread($fd, $ChunkSize - 8); + + } + $offset = 8; + + switch ($ChunkName) { + + case '.RMF': // RealMedia File Header + $thisfile_real_chunks_currentchunk['object_version'] = getid3_lib::BigEndian2Int(substr($ChunkData, $offset, 2)); + $offset += 2; + switch ($thisfile_real_chunks_currentchunk['object_version']) { + + case 0: + $thisfile_real_chunks_currentchunk['file_version'] = getid3_lib::BigEndian2Int(substr($ChunkData, $offset, 4)); + $offset += 4; + $thisfile_real_chunks_currentchunk['headers_count'] = getid3_lib::BigEndian2Int(substr($ChunkData, $offset, 4)); + $offset += 4; + break; + + default: + //$ThisFileInfo['warning'][] = 'Expected .RMF-object_version to be "0", actual value is "'.$thisfile_real_chunks_currentchunk['object_version'].'" (should not be a problem)'; + break; + + } + break; + + + case 'PROP': // Properties Header + $thisfile_real_chunks_currentchunk['object_version'] = getid3_lib::BigEndian2Int(substr($ChunkData, $offset, 2)); + $offset += 2; + if ($thisfile_real_chunks_currentchunk['object_version'] == 0) { + $thisfile_real_chunks_currentchunk['max_bit_rate'] = getid3_lib::BigEndian2Int(substr($ChunkData, $offset, 4)); + $offset += 4; + $thisfile_real_chunks_currentchunk['avg_bit_rate'] = getid3_lib::BigEndian2Int(substr($ChunkData, $offset, 4)); + $offset += 4; + $thisfile_real_chunks_currentchunk['max_packet_size'] = getid3_lib::BigEndian2Int(substr($ChunkData, $offset, 4)); + $offset += 4; + $thisfile_real_chunks_currentchunk['avg_packet_size'] = getid3_lib::BigEndian2Int(substr($ChunkData, $offset, 4)); + $offset += 4; + $thisfile_real_chunks_currentchunk['num_packets'] = getid3_lib::BigEndian2Int(substr($ChunkData, $offset, 4)); + $offset += 4; + $thisfile_real_chunks_currentchunk['duration'] = getid3_lib::BigEndian2Int(substr($ChunkData, $offset, 4)); + $offset += 4; + $thisfile_real_chunks_currentchunk['preroll'] = getid3_lib::BigEndian2Int(substr($ChunkData, $offset, 4)); + $offset += 4; + $thisfile_real_chunks_currentchunk['index_offset'] = getid3_lib::BigEndian2Int(substr($ChunkData, $offset, 4)); + $offset += 4; + $thisfile_real_chunks_currentchunk['data_offset'] = getid3_lib::BigEndian2Int(substr($ChunkData, $offset, 4)); + $offset += 4; + $thisfile_real_chunks_currentchunk['num_streams'] = getid3_lib::BigEndian2Int(substr($ChunkData, $offset, 2)); + $offset += 2; + $thisfile_real_chunks_currentchunk['flags_raw'] = getid3_lib::BigEndian2Int(substr($ChunkData, $offset, 2)); + $offset += 2; + $ThisFileInfo['playtime_seconds'] = $thisfile_real_chunks_currentchunk['duration'] / 1000; + if ($thisfile_real_chunks_currentchunk['duration'] > 0) { + $ThisFileInfo['bitrate'] += $thisfile_real_chunks_currentchunk['avg_bit_rate']; + } + $thisfile_real_chunks_currentchunk['flags']['save_enabled'] = (bool) ($thisfile_real_chunks_currentchunk['flags_raw'] & 0x0001); + $thisfile_real_chunks_currentchunk['flags']['perfect_play'] = (bool) ($thisfile_real_chunks_currentchunk['flags_raw'] & 0x0002); + $thisfile_real_chunks_currentchunk['flags']['live_broadcast'] = (bool) ($thisfile_real_chunks_currentchunk['flags_raw'] & 0x0004); + } + break; + + case 'MDPR': // Media Properties Header + $thisfile_real_chunks_currentchunk['object_version'] = getid3_lib::BigEndian2Int(substr($ChunkData, $offset, 2)); + $offset += 2; + if ($thisfile_real_chunks_currentchunk['object_version'] == 0) { + $thisfile_real_chunks_currentchunk['stream_number'] = getid3_lib::BigEndian2Int(substr($ChunkData, $offset, 2)); + $offset += 2; + $thisfile_real_chunks_currentchunk['max_bit_rate'] = getid3_lib::BigEndian2Int(substr($ChunkData, $offset, 4)); + $offset += 4; + $thisfile_real_chunks_currentchunk['avg_bit_rate'] = getid3_lib::BigEndian2Int(substr($ChunkData, $offset, 4)); + $offset += 4; + $thisfile_real_chunks_currentchunk['max_packet_size'] = getid3_lib::BigEndian2Int(substr($ChunkData, $offset, 4)); + $offset += 4; + $thisfile_real_chunks_currentchunk['avg_packet_size'] = getid3_lib::BigEndian2Int(substr($ChunkData, $offset, 4)); + $offset += 4; + $thisfile_real_chunks_currentchunk['start_time'] = getid3_lib::BigEndian2Int(substr($ChunkData, $offset, 4)); + $offset += 4; + $thisfile_real_chunks_currentchunk['preroll'] = getid3_lib::BigEndian2Int(substr($ChunkData, $offset, 4)); + $offset += 4; + $thisfile_real_chunks_currentchunk['duration'] = getid3_lib::BigEndian2Int(substr($ChunkData, $offset, 4)); + $offset += 4; + $thisfile_real_chunks_currentchunk['stream_name_size'] = getid3_lib::BigEndian2Int(substr($ChunkData, $offset, 1)); + $offset += 1; + $thisfile_real_chunks_currentchunk['stream_name'] = substr($ChunkData, $offset, $thisfile_real_chunks_currentchunk['stream_name_size']); + $offset += $thisfile_real_chunks_currentchunk['stream_name_size']; + $thisfile_real_chunks_currentchunk['mime_type_size'] = getid3_lib::BigEndian2Int(substr($ChunkData, $offset, 1)); + $offset += 1; + $thisfile_real_chunks_currentchunk['mime_type'] = substr($ChunkData, $offset, $thisfile_real_chunks_currentchunk['mime_type_size']); + $offset += $thisfile_real_chunks_currentchunk['mime_type_size']; + $thisfile_real_chunks_currentchunk['type_specific_len'] = getid3_lib::BigEndian2Int(substr($ChunkData, $offset, 4)); + $offset += 4; + $thisfile_real_chunks_currentchunk['type_specific_data'] = substr($ChunkData, $offset, $thisfile_real_chunks_currentchunk['type_specific_len']); + $offset += $thisfile_real_chunks_currentchunk['type_specific_len']; + + // shortcut + $thisfile_real_chunks_currentchunk_typespecificdata = &$thisfile_real_chunks_currentchunk['type_specific_data']; + + switch ($thisfile_real_chunks_currentchunk['mime_type']) { + case 'video/x-pn-realvideo': + case 'video/x-pn-multirate-realvideo': + // http://www.freelists.org/archives/matroska-devel/07-2003/msg00010.html + + // shortcut + $thisfile_real_chunks_currentchunk['video_info'] = array(); + $thisfile_real_chunks_currentchunk_videoinfo = &$thisfile_real_chunks_currentchunk['video_info']; + + $thisfile_real_chunks_currentchunk_videoinfo['dwSize'] = getid3_lib::BigEndian2Int(substr($thisfile_real_chunks_currentchunk_typespecificdata, 0, 4)); + $thisfile_real_chunks_currentchunk_videoinfo['fourcc1'] = substr($thisfile_real_chunks_currentchunk_typespecificdata, 4, 4); + $thisfile_real_chunks_currentchunk_videoinfo['fourcc2'] = substr($thisfile_real_chunks_currentchunk_typespecificdata, 8, 4); + $thisfile_real_chunks_currentchunk_videoinfo['width'] = getid3_lib::BigEndian2Int(substr($thisfile_real_chunks_currentchunk_typespecificdata, 12, 2)); + $thisfile_real_chunks_currentchunk_videoinfo['height'] = getid3_lib::BigEndian2Int(substr($thisfile_real_chunks_currentchunk_typespecificdata, 14, 2)); + $thisfile_real_chunks_currentchunk_videoinfo['bits_per_sample'] = getid3_lib::BigEndian2Int(substr($thisfile_real_chunks_currentchunk_typespecificdata, 16, 2)); + //$thisfile_real_chunks_currentchunk_videoinfo['unknown1'] = getid3_lib::BigEndian2Int(substr($thisfile_real_chunks_currentchunk_typespecificdata, 18, 2)); + //$thisfile_real_chunks_currentchunk_videoinfo['unknown2'] = getid3_lib::BigEndian2Int(substr($thisfile_real_chunks_currentchunk_typespecificdata, 20, 2)); + $thisfile_real_chunks_currentchunk_videoinfo['frames_per_second'] = getid3_lib::BigEndian2Int(substr($thisfile_real_chunks_currentchunk_typespecificdata, 22, 2)); + //$thisfile_real_chunks_currentchunk_videoinfo['unknown3'] = getid3_lib::BigEndian2Int(substr($thisfile_real_chunks_currentchunk_typespecificdata, 24, 2)); + //$thisfile_real_chunks_currentchunk_videoinfo['unknown4'] = getid3_lib::BigEndian2Int(substr($thisfile_real_chunks_currentchunk_typespecificdata, 26, 2)); + //$thisfile_real_chunks_currentchunk_videoinfo['unknown5'] = getid3_lib::BigEndian2Int(substr($thisfile_real_chunks_currentchunk_typespecificdata, 28, 2)); + //$thisfile_real_chunks_currentchunk_videoinfo['unknown6'] = getid3_lib::BigEndian2Int(substr($thisfile_real_chunks_currentchunk_typespecificdata, 30, 2)); + //$thisfile_real_chunks_currentchunk_videoinfo['unknown7'] = getid3_lib::BigEndian2Int(substr($thisfile_real_chunks_currentchunk_typespecificdata, 32, 2)); + //$thisfile_real_chunks_currentchunk_videoinfo['unknown8'] = getid3_lib::BigEndian2Int(substr($thisfile_real_chunks_currentchunk_typespecificdata, 34, 2)); + //$thisfile_real_chunks_currentchunk_videoinfo['unknown9'] = getid3_lib::BigEndian2Int(substr($thisfile_real_chunks_currentchunk_typespecificdata, 36, 2)); + + $thisfile_real_chunks_currentchunk_videoinfo['codec'] = getid3_riff::RIFFfourccLookup($thisfile_real_chunks_currentchunk_videoinfo['fourcc2']); + + $ThisFileInfo['video']['resolution_x'] = $thisfile_real_chunks_currentchunk_videoinfo['width']; + $ThisFileInfo['video']['resolution_y'] = $thisfile_real_chunks_currentchunk_videoinfo['height']; + $ThisFileInfo['video']['frame_rate'] = (float) $thisfile_real_chunks_currentchunk_videoinfo['frames_per_second']; + $ThisFileInfo['video']['codec'] = $thisfile_real_chunks_currentchunk_videoinfo['codec']; + $ThisFileInfo['video']['bits_per_sample'] = $thisfile_real_chunks_currentchunk_videoinfo['bits_per_sample']; + break; + + case 'audio/x-pn-realaudio': + case 'audio/x-pn-multirate-realaudio': + $this->ParseOldRAheader($thisfile_real_chunks_currentchunk_typespecificdata, $thisfile_real_chunks_currentchunk['parsed_audio_data']); + + $ThisFileInfo['audio']['sample_rate'] = $thisfile_real_chunks_currentchunk['parsed_audio_data']['sample_rate']; + $ThisFileInfo['audio']['bits_per_sample'] = $thisfile_real_chunks_currentchunk['parsed_audio_data']['bits_per_sample']; + $ThisFileInfo['audio']['channels'] = $thisfile_real_chunks_currentchunk['parsed_audio_data']['channels']; + if (!empty($ThisFileInfo['audio']['dataformat'])) { + foreach ($ThisFileInfo['audio'] as $key => $value) { + if ($key != 'streams') { + $ThisFileInfo['audio']['streams'][$thisfile_real_chunks_currentchunk['stream_number']][$key] = $value; + } + } + } + break; + + case 'logical-fileinfo': + // shortcut + $thisfile_real_chunks_currentchunk['logical_fileinfo'] = array(); + $thisfile_real_chunks_currentchunk_logicalfileinfo = &$thisfile_real_chunks_currentchunk['logical_fileinfo']; + + $thisfile_real_chunks_currentchunk_logicalfileinfo_offset = 0; + $thisfile_real_chunks_currentchunk_logicalfileinfo['logical_fileinfo_length'] = getid3_lib::BigEndian2Int(substr($thisfile_real_chunks_currentchunk_typespecificdata, $thisfile_real_chunks_currentchunk_logicalfileinfo_offset, 4)); + $thisfile_real_chunks_currentchunk_logicalfileinfo_offset += 4; + + //$thisfile_real_chunks_currentchunk_logicalfileinfo['unknown1'] = getid3_lib::BigEndian2Int(substr($thisfile_real_chunks_currentchunk_typespecificdata, $thisfile_real_chunks_currentchunk_logicalfileinfo_offset, 4)); + $thisfile_real_chunks_currentchunk_logicalfileinfo_offset += 4; + + $thisfile_real_chunks_currentchunk_logicalfileinfo['num_tags'] = getid3_lib::BigEndian2Int(substr($thisfile_real_chunks_currentchunk_typespecificdata, $thisfile_real_chunks_currentchunk_logicalfileinfo_offset, 4)); + $thisfile_real_chunks_currentchunk_logicalfileinfo_offset += 4; + + //$thisfile_real_chunks_currentchunk_logicalfileinfo['unknown2'] = getid3_lib::BigEndian2Int(substr($thisfile_real_chunks_currentchunk_typespecificdata, $thisfile_real_chunks_currentchunk_logicalfileinfo_offset, 4)); + $thisfile_real_chunks_currentchunk_logicalfileinfo_offset += 4; + + //$thisfile_real_chunks_currentchunk_logicalfileinfo['d'] = getid3_lib::BigEndian2Int(substr($thisfile_real_chunks_currentchunk_typespecificdata, $thisfile_real_chunks_currentchunk_logicalfileinfo_offset, 1)); + + //$thisfile_real_chunks_currentchunk_logicalfileinfo['one_type'] = getid3_lib::BigEndian2Int(substr($thisfile_real_chunks_currentchunk_typespecificdata, $thisfile_real_chunks_currentchunk_logicalfileinfo_offset, 4)); + //$thisfile_real_chunks_currentchunk_logicalfileinfo_thislength = getid3_lib::BigEndian2Int(substr($thisfile_real_chunks_currentchunk_typespecificdata, 4 + $thisfile_real_chunks_currentchunk_logicalfileinfo_offset, 2)); + //$thisfile_real_chunks_currentchunk_logicalfileinfo['one'] = substr($thisfile_real_chunks_currentchunk_typespecificdata, 6 + $thisfile_real_chunks_currentchunk_logicalfileinfo_offset, $thisfile_real_chunks_currentchunk_logicalfileinfo_thislength); + //$thisfile_real_chunks_currentchunk_logicalfileinfo_offset += (6 + $thisfile_real_chunks_currentchunk_logicalfileinfo_thislength); + + break; + + } + + + if (empty($ThisFileInfo['playtime_seconds'])) { + $ThisFileInfo['playtime_seconds'] = max($ThisFileInfo['playtime_seconds'], ($thisfile_real_chunks_currentchunk['duration'] + $thisfile_real_chunks_currentchunk['start_time']) / 1000); + } + if ($thisfile_real_chunks_currentchunk['duration'] > 0) { + switch ($thisfile_real_chunks_currentchunk['mime_type']) { + case 'audio/x-pn-realaudio': + case 'audio/x-pn-multirate-realaudio': + $ThisFileInfo['audio']['bitrate'] = (isset($ThisFileInfo['audio']['bitrate']) ? $ThisFileInfo['audio']['bitrate'] : 0) + $thisfile_real_chunks_currentchunk['avg_bit_rate']; + $ThisFileInfo['audio']['codec'] = $this->RealAudioCodecFourCClookup($thisfile_real_chunks_currentchunk['parsed_audio_data']['fourcc'], $ThisFileInfo['audio']['bitrate']); + $ThisFileInfo['audio']['dataformat'] = 'real'; + $ThisFileInfo['audio']['lossless'] = false; + break; + + case 'video/x-pn-realvideo': + case 'video/x-pn-multirate-realvideo': + $ThisFileInfo['video']['bitrate'] = (isset($ThisFileInfo['video']['bitrate']) ? $ThisFileInfo['video']['bitrate'] : 0) + $thisfile_real_chunks_currentchunk['avg_bit_rate']; + $ThisFileInfo['video']['bitrate_mode'] = 'cbr'; + $ThisFileInfo['video']['dataformat'] = 'real'; + $ThisFileInfo['video']['lossless'] = false; + $ThisFileInfo['video']['pixel_aspect_ratio'] = (float) 1; + break; + + case 'audio/x-ralf-mpeg4-generic': + $ThisFileInfo['audio']['bitrate'] = (isset($ThisFileInfo['audio']['bitrate']) ? $ThisFileInfo['audio']['bitrate'] : 0) + $thisfile_real_chunks_currentchunk['avg_bit_rate']; + $ThisFileInfo['audio']['codec'] = 'RealAudio Lossless'; + $ThisFileInfo['audio']['dataformat'] = 'real'; + $ThisFileInfo['audio']['lossless'] = true; + break; + } + $ThisFileInfo['bitrate'] = (isset($ThisFileInfo['video']['bitrate']) ? $ThisFileInfo['video']['bitrate'] : 0) + (isset($ThisFileInfo['audio']['bitrate']) ? $ThisFileInfo['audio']['bitrate'] : 0); + } + } + break; + + case 'CONT': // Content Description Header (text comments) + $thisfile_real_chunks_currentchunk['object_version'] = getid3_lib::BigEndian2Int(substr($ChunkData, $offset, 2)); + $offset += 2; + if ($thisfile_real_chunks_currentchunk['object_version'] == 0) { + $thisfile_real_chunks_currentchunk['title_len'] = getid3_lib::BigEndian2Int(substr($ChunkData, $offset, 2)); + $offset += 2; + $thisfile_real_chunks_currentchunk['title'] = (string) substr($ChunkData, $offset, $thisfile_real_chunks_currentchunk['title_len']); + $offset += $thisfile_real_chunks_currentchunk['title_len']; + + $thisfile_real_chunks_currentchunk['artist_len'] = getid3_lib::BigEndian2Int(substr($ChunkData, $offset, 2)); + $offset += 2; + $thisfile_real_chunks_currentchunk['artist'] = (string) substr($ChunkData, $offset, $thisfile_real_chunks_currentchunk['artist_len']); + $offset += $thisfile_real_chunks_currentchunk['artist_len']; + + $thisfile_real_chunks_currentchunk['copyright_len'] = getid3_lib::BigEndian2Int(substr($ChunkData, $offset, 2)); + $offset += 2; + $thisfile_real_chunks_currentchunk['copyright'] = (string) substr($ChunkData, $offset, $thisfile_real_chunks_currentchunk['copyright_len']); + $offset += $thisfile_real_chunks_currentchunk['copyright_len']; + + $thisfile_real_chunks_currentchunk['comment_len'] = getid3_lib::BigEndian2Int(substr($ChunkData, $offset, 2)); + $offset += 2; + $thisfile_real_chunks_currentchunk['comment'] = (string) substr($ChunkData, $offset, $thisfile_real_chunks_currentchunk['comment_len']); + $offset += $thisfile_real_chunks_currentchunk['comment_len']; + + + $commentkeystocopy = array('title'=>'title', 'artist'=>'artist', 'copyright'=>'copyright', 'comment'=>'comment'); + foreach ($commentkeystocopy as $key => $val) { + if ($thisfile_real_chunks_currentchunk[$key]) { + $ThisFileInfo['real']['comments'][$val][] = trim($thisfile_real_chunks_currentchunk[$key]); + } + } + + } + break; + + + case 'DATA': // Data Chunk Header + // do nothing + break; + + case 'INDX': // Index Section Header + $thisfile_real_chunks_currentchunk['object_version'] = getid3_lib::BigEndian2Int(substr($ChunkData, $offset, 2)); + $offset += 2; + if ($thisfile_real_chunks_currentchunk['object_version'] == 0) { + $thisfile_real_chunks_currentchunk['num_indices'] = getid3_lib::BigEndian2Int(substr($ChunkData, $offset, 4)); + $offset += 4; + $thisfile_real_chunks_currentchunk['stream_number'] = getid3_lib::BigEndian2Int(substr($ChunkData, $offset, 2)); + $offset += 2; + $thisfile_real_chunks_currentchunk['next_index_header'] = getid3_lib::BigEndian2Int(substr($ChunkData, $offset, 4)); + $offset += 4; + + if ($thisfile_real_chunks_currentchunk['next_index_header'] == 0) { + // last index chunk found, ignore rest of file + break 2; + } else { + // non-last index chunk, seek to next index chunk (skipping actual index data) + fseek($fd, $thisfile_real_chunks_currentchunk['next_index_header'], SEEK_SET); + } + } + break; + + default: + $ThisFileInfo['warning'][] = 'Unhandled RealMedia chunk "'.$ChunkName.'" at offset '.$thisfile_real_chunks_currentchunk['offset']; + break; + } + $ChunkCounter++; + } + + if (!empty($ThisFileInfo['audio']['streams'])) { + $ThisFileInfo['audio']['bitrate'] = 0; + foreach ($ThisFileInfo['audio']['streams'] as $key => $valuearray) { + $ThisFileInfo['audio']['bitrate'] += $valuearray['bitrate']; + } + } + + return true; + } + + + function ParseOldRAheader($OldRAheaderData, &$ParsedArray) { + // http://www.freelists.org/archives/matroska-devel/07-2003/msg00010.html + + $ParsedArray = array(); + $ParsedArray['magic'] = substr($OldRAheaderData, 0, 4); + if ($ParsedArray['magic'] != '.ra'."\xFD") { + return false; + } + $ParsedArray['version1'] = getid3_lib::BigEndian2Int(substr($OldRAheaderData, 4, 2)); + + if ($ParsedArray['version1'] < 3) { + + return false; + + } elseif ($ParsedArray['version1'] == 3) { + + $ParsedArray['fourcc1'] = '.ra3'; + $ParsedArray['bits_per_sample'] = 16; // hard-coded for old versions? + $ParsedArray['sample_rate'] = 8000; // hard-coded for old versions? + + $ParsedArray['header_size'] = getid3_lib::BigEndian2Int(substr($OldRAheaderData, 6, 2)); + $ParsedArray['channels'] = getid3_lib::BigEndian2Int(substr($OldRAheaderData, 8, 2)); // always 1 (?) + //$ParsedArray['unknown1'] = getid3_lib::BigEndian2Int(substr($OldRAheaderData, 10, 2)); + //$ParsedArray['unknown2'] = getid3_lib::BigEndian2Int(substr($OldRAheaderData, 12, 2)); + //$ParsedArray['unknown3'] = getid3_lib::BigEndian2Int(substr($OldRAheaderData, 14, 2)); + $ParsedArray['bytes_per_minute'] = getid3_lib::BigEndian2Int(substr($OldRAheaderData, 16, 2)); + $ParsedArray['audio_bytes'] = getid3_lib::BigEndian2Int(substr($OldRAheaderData, 18, 4)); + $ParsedArray['comments_raw'] = substr($OldRAheaderData, 22, $ParsedArray['header_size'] - 22 + 1); // not including null terminator + + $commentoffset = 0; + $commentlength = getid3_lib::BigEndian2Int(substr($ParsedArray['comments_raw'], $commentoffset++, 1)); + $ParsedArray['comments']['title'][] = substr($ParsedArray['comments_raw'], $commentoffset, $commentlength); + $commentoffset += $commentlength; + + $commentlength = getid3_lib::BigEndian2Int(substr($ParsedArray['comments_raw'], $commentoffset++, 1)); + $ParsedArray['comments']['artist'][] = substr($ParsedArray['comments_raw'], $commentoffset, $commentlength); + $commentoffset += $commentlength; + + $commentlength = getid3_lib::BigEndian2Int(substr($ParsedArray['comments_raw'], $commentoffset++, 1)); + $ParsedArray['comments']['copyright'][] = substr($ParsedArray['comments_raw'], $commentoffset, $commentlength); + $commentoffset += $commentlength; + + $commentoffset++; // final null terminator (?) + $commentoffset++; // fourcc length (?) should be 4 + $ParsedArray['fourcc'] = substr($OldRAheaderData, 23 + $commentoffset, 4); + + } elseif ($ParsedArray['version1'] <= 5) { + + //$ParsedArray['unknown1'] = getid3_lib::BigEndian2Int(substr($OldRAheaderData, 6, 2)); + $ParsedArray['fourcc1'] = substr($OldRAheaderData, 8, 4); + $ParsedArray['file_size'] = getid3_lib::BigEndian2Int(substr($OldRAheaderData, 12, 4)); + $ParsedArray['version2'] = getid3_lib::BigEndian2Int(substr($OldRAheaderData, 16, 2)); + $ParsedArray['header_size'] = getid3_lib::BigEndian2Int(substr($OldRAheaderData, 18, 4)); + $ParsedArray['codec_flavor_id'] = getid3_lib::BigEndian2Int(substr($OldRAheaderData, 22, 2)); + $ParsedArray['coded_frame_size'] = getid3_lib::BigEndian2Int(substr($OldRAheaderData, 24, 4)); + $ParsedArray['audio_bytes'] = getid3_lib::BigEndian2Int(substr($OldRAheaderData, 28, 4)); + $ParsedArray['bytes_per_minute'] = getid3_lib::BigEndian2Int(substr($OldRAheaderData, 32, 4)); + //$ParsedArray['unknown5'] = getid3_lib::BigEndian2Int(substr($OldRAheaderData, 36, 4)); + $ParsedArray['sub_packet_h'] = getid3_lib::BigEndian2Int(substr($OldRAheaderData, 40, 2)); + $ParsedArray['frame_size'] = getid3_lib::BigEndian2Int(substr($OldRAheaderData, 42, 2)); + $ParsedArray['sub_packet_size'] = getid3_lib::BigEndian2Int(substr($OldRAheaderData, 44, 2)); + //$ParsedArray['unknown6'] = getid3_lib::BigEndian2Int(substr($OldRAheaderData, 46, 2)); + + switch ($ParsedArray['version1']) { + + case 4: + $ParsedArray['sample_rate'] = getid3_lib::BigEndian2Int(substr($OldRAheaderData, 48, 2)); + //$ParsedArray['unknown8'] = getid3_lib::BigEndian2Int(substr($OldRAheaderData, 50, 2)); + $ParsedArray['bits_per_sample'] = getid3_lib::BigEndian2Int(substr($OldRAheaderData, 52, 2)); + $ParsedArray['channels'] = getid3_lib::BigEndian2Int(substr($OldRAheaderData, 54, 2)); + $ParsedArray['length_fourcc2'] = getid3_lib::BigEndian2Int(substr($OldRAheaderData, 56, 1)); + $ParsedArray['fourcc2'] = substr($OldRAheaderData, 57, 4); + $ParsedArray['length_fourcc3'] = getid3_lib::BigEndian2Int(substr($OldRAheaderData, 61, 1)); + $ParsedArray['fourcc3'] = substr($OldRAheaderData, 62, 4); + //$ParsedArray['unknown9'] = getid3_lib::BigEndian2Int(substr($OldRAheaderData, 66, 1)); + //$ParsedArray['unknown10'] = getid3_lib::BigEndian2Int(substr($OldRAheaderData, 67, 2)); + $ParsedArray['comments_raw'] = substr($OldRAheaderData, 69, $ParsedArray['header_size'] - 69 + 16); + + $commentoffset = 0; + $commentlength = getid3_lib::BigEndian2Int(substr($ParsedArray['comments_raw'], $commentoffset++, 1)); + $ParsedArray['comments']['title'][] = substr($ParsedArray['comments_raw'], $commentoffset, $commentlength); + $commentoffset += $commentlength; + + $commentlength = getid3_lib::BigEndian2Int(substr($ParsedArray['comments_raw'], $commentoffset++, 1)); + $ParsedArray['comments']['artist'][] = substr($ParsedArray['comments_raw'], $commentoffset, $commentlength); + $commentoffset += $commentlength; + + $commentlength = getid3_lib::BigEndian2Int(substr($ParsedArray['comments_raw'], $commentoffset++, 1)); + $ParsedArray['comments']['copyright'][] = substr($ParsedArray['comments_raw'], $commentoffset, $commentlength); + $commentoffset += $commentlength; + break; + + case 5: + $ParsedArray['sample_rate'] = getid3_lib::BigEndian2Int(substr($OldRAheaderData, 48, 4)); + $ParsedArray['sample_rate2'] = getid3_lib::BigEndian2Int(substr($OldRAheaderData, 52, 4)); + $ParsedArray['bits_per_sample'] = getid3_lib::BigEndian2Int(substr($OldRAheaderData, 56, 4)); + $ParsedArray['channels'] = getid3_lib::BigEndian2Int(substr($OldRAheaderData, 60, 2)); + $ParsedArray['genr'] = substr($OldRAheaderData, 62, 4); + $ParsedArray['fourcc3'] = substr($OldRAheaderData, 66, 4); + $ParsedArray['comments'] = array(); + break; + } + $ParsedArray['fourcc'] = $ParsedArray['fourcc3']; + + } + foreach ($ParsedArray['comments'] as $key => $value) { + if ($ParsedArray['comments'][$key][0] === false) { + $ParsedArray['comments'][$key][0] = ''; + } + } + + return true; + } + + function RealAudioCodecFourCClookup($fourcc, $bitrate) { + static $RealAudioCodecFourCClookup = array(); + if (empty($RealAudioCodecFourCClookup)) { + // http://www.its.msstate.edu/net/real/reports/config/tags.stats + // http://www.freelists.org/archives/matroska-devel/06-2003/fullthread18.html + + $RealAudioCodecFourCClookup['14_4'][8000] = 'RealAudio v2 (14.4kbps)'; + $RealAudioCodecFourCClookup['14.4'][8000] = 'RealAudio v2 (14.4kbps)'; + $RealAudioCodecFourCClookup['lpcJ'][8000] = 'RealAudio v2 (14.4kbps)'; + $RealAudioCodecFourCClookup['28_8'][15200] = 'RealAudio v2 (28.8kbps)'; + $RealAudioCodecFourCClookup['28.8'][15200] = 'RealAudio v2 (28.8kbps)'; + $RealAudioCodecFourCClookup['sipr'][4933] = 'RealAudio v4 (5kbps Voice)'; + $RealAudioCodecFourCClookup['sipr'][6444] = 'RealAudio v4 (6.5kbps Voice)'; + $RealAudioCodecFourCClookup['sipr'][8444] = 'RealAudio v4 (8.5kbps Voice)'; + $RealAudioCodecFourCClookup['sipr'][16000] = 'RealAudio v4 (16kbps Wideband)'; + $RealAudioCodecFourCClookup['dnet'][8000] = 'RealAudio v3 (8kbps Music)'; + $RealAudioCodecFourCClookup['dnet'][16000] = 'RealAudio v3 (16kbps Music Low Response)'; + $RealAudioCodecFourCClookup['dnet'][15963] = 'RealAudio v3 (16kbps Music Mid/High Response)'; + $RealAudioCodecFourCClookup['dnet'][20000] = 'RealAudio v3 (20kbps Music Stereo)'; + $RealAudioCodecFourCClookup['dnet'][32000] = 'RealAudio v3 (32kbps Music Mono)'; + $RealAudioCodecFourCClookup['dnet'][31951] = 'RealAudio v3 (32kbps Music Stereo)'; + $RealAudioCodecFourCClookup['dnet'][39965] = 'RealAudio v3 (40kbps Music Mono)'; + $RealAudioCodecFourCClookup['dnet'][40000] = 'RealAudio v3 (40kbps Music Stereo)'; + $RealAudioCodecFourCClookup['dnet'][79947] = 'RealAudio v3 (80kbps Music Mono)'; + $RealAudioCodecFourCClookup['dnet'][80000] = 'RealAudio v3 (80kbps Music Stereo)'; + + $RealAudioCodecFourCClookup['dnet'][0] = 'RealAudio v3'; + $RealAudioCodecFourCClookup['sipr'][0] = 'RealAudio v4'; + $RealAudioCodecFourCClookup['cook'][0] = 'RealAudio G2'; + $RealAudioCodecFourCClookup['atrc'][0] = 'RealAudio 8'; + } + $roundbitrate = intval(round($bitrate)); + if (isset($RealAudioCodecFourCClookup[$fourcc][$roundbitrate])) { + return $RealAudioCodecFourCClookup[$fourcc][$roundbitrate]; + } elseif (isset($RealAudioCodecFourCClookup[$fourcc][0])) { + return $RealAudioCodecFourCClookup[$fourcc][0]; + } + return $fourcc; + } + +} + + +?>
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