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module.audio-video.quicktime.php
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module.audio-video.quicktime.php
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<?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.quicktime.php //
// module for analyzing Quicktime and MP3-in-MP4 files //
// dependencies: module.audio.mp3.php //
// ///
/////////////////////////////////////////////////////////////////
getid3_lib::IncludeDependency(GETID3_INCLUDEPATH.'module.audio.mp3.php', __FILE__, true);
class getid3_quicktime
{
function getid3_quicktime(&$fd, &$ThisFileInfo, $ReturnAtomData=true, $ParseAllPossibleAtoms=false) {
$ThisFileInfo['fileformat'] = 'quicktime';
$ThisFileInfo['quicktime']['hinting'] = false;
fseek($fd, $ThisFileInfo['avdataoffset'], SEEK_SET);
$offset = 0;
$atomcounter = 0;
while ($offset < $ThisFileInfo['avdataend']) {
if ($offset >= pow(2, 31)) {
$ThisFileInfo['error'][] = 'Unable to parse atom at offset '.$offset.' because beyond 2GB limit of PHP filesystem functions';
break;
}
fseek($fd, $offset, SEEK_SET);
$AtomHeader = fread($fd, 8);
$atomsize = getid3_lib::BigEndian2Int(substr($AtomHeader, 0, 4));
$atomname = substr($AtomHeader, 4, 4);
// 64-bit MOV patch by jlegateØktnc*com
if ($atomsize == 1) {
$atomsize = getid3_lib::BigEndian2Int(fread($fd, 8));
}
$ThisFileInfo['quicktime'][$atomname]['name'] = $atomname;
$ThisFileInfo['quicktime'][$atomname]['size'] = $atomsize;
$ThisFileInfo['quicktime'][$atomname]['offset'] = $offset;
if (($offset + $atomsize) > $ThisFileInfo['avdataend']) {
$ThisFileInfo['error'][] = 'Atom at offset '.$offset.' claims to go beyond end-of-file (length: '.$atomsize.' bytes)';
return false;
}
if ($atomsize == 0) {
// Furthermore, for historical reasons the list of atoms is optionally
// terminated by a 32-bit integer set to 0. If you are writing a program
// to read user data atoms, you should allow for the terminating 0.
break;
}
switch ($atomname) {
case 'mdat': // Media DATa atom
// 'mdat' contains the actual data for the audio/video
if (($atomsize > 8) && (!isset($ThisFileInfo['avdataend_tmp']) || ($ThisFileInfo['quicktime'][$atomname]['size'] > ($ThisFileInfo['avdataend_tmp'] - $ThisFileInfo['avdataoffset'])))) {
$ThisFileInfo['avdataoffset'] = $ThisFileInfo['quicktime'][$atomname]['offset'] + 8;
$OldAVDataEnd = $ThisFileInfo['avdataend'];
$ThisFileInfo['avdataend'] = $ThisFileInfo['quicktime'][$atomname]['offset'] + $ThisFileInfo['quicktime'][$atomname]['size'];
if (getid3_mp3::MPEGaudioHeaderValid(getid3_mp3::MPEGaudioHeaderDecode(fread($fd, 4)))) {
getid3_mp3::getOnlyMPEGaudioInfo($fd, $ThisFileInfo, $ThisFileInfo['avdataoffset'], false);
if (isset($ThisFileInfo['mpeg']['audio'])) {
$ThisFileInfo['audio']['dataformat'] = 'mp3';
$ThisFileInfo['audio']['codec'] = (!empty($ThisFileInfo['mpeg']['audio']['encoder']) ? $ThisFileInfo['mpeg']['audio']['encoder'] : (!empty($ThisFileInfo['mpeg']['audio']['codec']) ? $ThisFileInfo['mpeg']['audio']['codec'] : (!empty($ThisFileInfo['mpeg']['audio']['LAME']) ? 'LAME' :'mp3')));
$ThisFileInfo['audio']['sample_rate'] = $ThisFileInfo['mpeg']['audio']['sample_rate'];
$ThisFileInfo['audio']['channels'] = $ThisFileInfo['mpeg']['audio']['channels'];
$ThisFileInfo['audio']['bitrate'] = $ThisFileInfo['mpeg']['audio']['bitrate'];
$ThisFileInfo['audio']['bitrate_mode'] = strtolower($ThisFileInfo['mpeg']['audio']['bitrate_mode']);
$ThisFileInfo['bitrate'] = $ThisFileInfo['audio']['bitrate'];
}
}
$ThisFileInfo['avdataend'] = $OldAVDataEnd;
unset($OldAVDataEnd);
}
break;
case 'free': // FREE space atom
case 'skip': // SKIP atom
case 'wide': // 64-bit expansion placeholder atom
// 'free', 'skip' and 'wide' are just padding, contains no useful data at all
break;
default:
$atomHierarchy = array();
$ThisFileInfo['quicktime'][$atomname] = $this->QuicktimeParseAtom($atomname, $atomsize, fread($fd, $atomsize), $ThisFileInfo, $offset, $atomHierarchy, $ParseAllPossibleAtoms);
break;
}
$offset += $atomsize;
$atomcounter++;
}
if (!empty($ThisFileInfo['avdataend_tmp'])) {
// this value is assigned to a temp value and then erased because
// otherwise any atoms beyond the 'mdat' atom would not get parsed
$ThisFileInfo['avdataend'] = $ThisFileInfo['avdataend_tmp'];
unset($ThisFileInfo['avdataend_tmp']);
}
if (!isset($ThisFileInfo['bitrate']) && isset($ThisFileInfo['playtime_seconds'])) {
$ThisFileInfo['bitrate'] = (($ThisFileInfo['avdataend'] - $ThisFileInfo['avdataoffset']) * 8) / $ThisFileInfo['playtime_seconds'];
}
if (isset($ThisFileInfo['bitrate']) && !isset($ThisFileInfo['audio']['bitrate']) && !isset($ThisFileInfo['quicktime']['video'])) {
$ThisFileInfo['audio']['bitrate'] = $ThisFileInfo['bitrate'];
}
if (@$ThisFileInfo['playtime_seconds'] && !isset($ThisFileInfo['video']['frame_rate']) && !empty($ThisFileInfo['quicktime']['stts_framecount'])) {
foreach ($ThisFileInfo['quicktime']['stts_framecount'] as $key => $samples_count) {
$samples_per_second = $samples_count / $ThisFileInfo['playtime_seconds'];
if ($samples_per_second > 240) {
// has to be audio samples
} else {
$ThisFileInfo['video']['frame_rate'] = $samples_per_second;
break;
}
}
}
if (($ThisFileInfo['audio']['dataformat'] == 'mp4') && empty($ThisFileInfo['video']['resolution_x'])) {
$ThisFileInfo['fileformat'] = 'mp4';
$ThisFileInfo['mime_type'] = 'audio/mp4';
unset($ThisFileInfo['video']['dataformat']);
}
if (!$ReturnAtomData) {
unset($ThisFileInfo['quicktime']['moov']);
}
if (empty($ThisFileInfo['audio']['dataformat']) && !empty($ThisFileInfo['quicktime']['audio'])) {
$ThisFileInfo['audio']['dataformat'] = 'quicktime';
}
if (empty($ThisFileInfo['video']['dataformat']) && !empty($ThisFileInfo['quicktime']['video'])) {
$ThisFileInfo['video']['dataformat'] = 'quicktime';
}
return true;
}
function QuicktimeParseAtom($atomname, $atomsize, $atomdata, &$ThisFileInfo, $baseoffset, &$atomHierarchy, $ParseAllPossibleAtoms) {
// http://developer.apple.com/techpubs/quicktime/qtdevdocs/APIREF/INDEX/atomalphaindex.htm
array_push($atomHierarchy, $atomname);
$atomstructure['hierarchy'] = implode(' ', $atomHierarchy);
$atomstructure['name'] = $atomname;
$atomstructure['size'] = $atomsize;
$atomstructure['offset'] = $baseoffset;
switch ($atomname) {
case 'moov': // MOVie container atom
case 'trak': // TRAcK container atom
case 'clip': // CLIPping container atom
case 'matt': // track MATTe container atom
case 'edts': // EDiTS container atom
case 'tref': // Track REFerence container atom
case 'mdia': // MeDIA container atom
case 'minf': // Media INFormation container atom
case 'dinf': // Data INFormation container atom
case 'udta': // User DaTA container atom
case 'cmov': // Compressed MOVie container atom
case 'rmra': // Reference Movie Record Atom
case 'rmda': // Reference Movie Descriptor Atom
case 'gmhd': // Generic Media info HeaDer atom (seen on QTVR)
$atomstructure['subatoms'] = $this->QuicktimeParseContainerAtom($atomdata, $ThisFileInfo, $baseoffset + 8, $atomHierarchy, $ParseAllPossibleAtoms);
break;
case 'stbl': // Sample TaBLe container atom
$atomstructure['subatoms'] = $this->QuicktimeParseContainerAtom($atomdata, $ThisFileInfo, $baseoffset + 8, $atomHierarchy, $ParseAllPossibleAtoms);
$isVideo = false;
$framerate = 0;
$framecount = 0;
foreach ($atomstructure['subatoms'] as $key => $value_array) {
if (isset($value_array['sample_description_table'])) {
foreach ($value_array['sample_description_table'] as $key2 => $value_array2) {
if (isset($value_array2['data_format'])) {
switch ($value_array2['data_format']) {
case 'avc1':
case 'mp4v':
// video data
$isVideo = true;
break;
case 'mp4a':
// audio data
break;
}
}
}
} elseif (isset($value_array['time_to_sample_table'])) {
foreach ($value_array['time_to_sample_table'] as $key2 => $value_array2) {
if (isset($value_array2['sample_count']) && isset($value_array2['sample_duration'])) {
$framerate = round($ThisFileInfo['quicktime']['time_scale'] / $value_array2['sample_duration'], 3);
$framecount = $value_array2['sample_count'];
}
}
}
}
if ($isVideo && $framerate) {
$ThisFileInfo['quicktime']['video']['frame_rate'] = $framerate;
$ThisFileInfo['video']['frame_rate'] = $ThisFileInfo['quicktime']['video']['frame_rate'];
}
if ($isVideo && $framecount) {
$ThisFileInfo['quicktime']['video']['frame_count'] = $framecount;
}
break;
case '©cpy':
case '©day':
case '©dir':
case '©ed1':
case '©ed2':
case '©ed3':
case '©ed4':
case '©ed5':
case '©ed6':
case '©ed7':
case '©ed8':
case '©ed9':
case '©fmt':
case '©inf':
case '©prd':
case '©prf':
case '©req':
case '©src':
case '©wrt':
case '©nam':
case '©cmt':
case '©wrn':
case '©hst':
case '©mak':
case '©mod':
case '©PRD':
case '©swr':
case '©aut':
case '©ART':
case '©trk':
case '©alb':
case '©com':
case '©gen':
case '©ope':
case '©url':
case '©enc':
$atomstructure['data_length'] = getid3_lib::BigEndian2Int(substr($atomdata, 0, 2));
$atomstructure['language_id'] = getid3_lib::BigEndian2Int(substr($atomdata, 2, 2));
$atomstructure['data'] = substr($atomdata, 4);
$atomstructure['language'] = $this->QuicktimeLanguageLookup($atomstructure['language_id']);
if (empty($ThisFileInfo['comments']['language']) || (!in_array($atomstructure['language'], $ThisFileInfo['comments']['language']))) {
$ThisFileInfo['comments']['language'][] = $atomstructure['language'];
}
$this->CopyToAppropriateCommentsSection($atomname, $atomstructure['data'], $ThisFileInfo);
break;
case 'play': // auto-PLAY atom
$atomstructure['autoplay'] = (bool) getid3_lib::BigEndian2Int(substr($atomdata, 0, 1));
$ThisFileInfo['quicktime']['autoplay'] = $atomstructure['autoplay'];
break;
case 'WLOC': // Window LOCation atom
$atomstructure['location_x'] = getid3_lib::BigEndian2Int(substr($atomdata, 0, 2));
$atomstructure['location_y'] = getid3_lib::BigEndian2Int(substr($atomdata, 2, 2));
break;
case 'LOOP': // LOOPing atom
case 'SelO': // play SELection Only atom
case 'AllF': // play ALL Frames atom
$atomstructure['data'] = getid3_lib::BigEndian2Int($atomdata);
break;
case 'name': //
case 'MCPS': // Media Cleaner PRo
case '@PRM': // adobe PReMiere version
case '@PRQ': // adobe PRemiere Quicktime version
$atomstructure['data'] = $atomdata;
break;
case 'cmvd': // Compressed MooV Data atom
// Code by ubergeekØubergeek*tv based on information from
// http://developer.apple.com/quicktime/icefloe/dispatch012.html
$atomstructure['unCompressedSize'] = getid3_lib::BigEndian2Int(substr($atomdata, 0, 4));
$CompressedFileData = substr($atomdata, 4);
if ($UncompressedHeader = @gzuncompress($CompressedFileData)) {
$atomstructure['subatoms'] = $this->QuicktimeParseContainerAtom($UncompressedHeader, $ThisFileInfo, 0, $atomHierarchy, $ParseAllPossibleAtoms);
} else {
$ThisFileInfo['warning'][] = 'Error decompressing compressed MOV atom at offset '.$atomstructure['offset'];
}
break;
case 'dcom': // Data COMpression atom
$atomstructure['compression_id'] = $atomdata;
$atomstructure['compression_text'] = $this->QuicktimeDCOMLookup($atomdata);
break;
case 'rdrf': // Reference movie Data ReFerence atom
$atomstructure['version'] = getid3_lib::BigEndian2Int(substr($atomdata, 0, 1));
$atomstructure['flags_raw'] = getid3_lib::BigEndian2Int(substr($atomdata, 1, 3));
$atomstructure['flags']['internal_data'] = (bool) ($atomstructure['flags_raw'] & 0x000001);
$atomstructure['reference_type_name'] = substr($atomdata, 4, 4);
$atomstructure['reference_length'] = getid3_lib::BigEndian2Int(substr($atomdata, 8, 4));
switch ($atomstructure['reference_type_name']) {
case 'url ':
$atomstructure['url'] = $this->NoNullString(substr($atomdata, 12));
break;
case 'alis':
$atomstructure['file_alias'] = substr($atomdata, 12);
break;
case 'rsrc':
$atomstructure['resource_alias'] = substr($atomdata, 12);
break;
default:
$atomstructure['data'] = substr($atomdata, 12);
break;
}
break;
case 'rmqu': // Reference Movie QUality atom
$atomstructure['movie_quality'] = getid3_lib::BigEndian2Int($atomdata);
break;
case 'rmcs': // Reference Movie Cpu Speed atom
$atomstructure['version'] = getid3_lib::BigEndian2Int(substr($atomdata, 0, 1));
$atomstructure['flags_raw'] = getid3_lib::BigEndian2Int(substr($atomdata, 1, 3)); // hardcoded: 0x0000
$atomstructure['cpu_speed_rating'] = getid3_lib::BigEndian2Int(substr($atomdata, 4, 2));
break;
case 'rmvc': // Reference Movie Version Check atom
$atomstructure['version'] = getid3_lib::BigEndian2Int(substr($atomdata, 0, 1));
$atomstructure['flags_raw'] = getid3_lib::BigEndian2Int(substr($atomdata, 1, 3)); // hardcoded: 0x0000
$atomstructure['gestalt_selector'] = substr($atomdata, 4, 4);
$atomstructure['gestalt_value_mask'] = getid3_lib::BigEndian2Int(substr($atomdata, 8, 4));
$atomstructure['gestalt_value'] = getid3_lib::BigEndian2Int(substr($atomdata, 12, 4));
$atomstructure['gestalt_check_type'] = getid3_lib::BigEndian2Int(substr($atomdata, 14, 2));
break;
case 'rmcd': // Reference Movie Component check atom
$atomstructure['version'] = getid3_lib::BigEndian2Int(substr($atomdata, 0, 1));
$atomstructure['flags_raw'] = getid3_lib::BigEndian2Int(substr($atomdata, 1, 3)); // hardcoded: 0x0000
$atomstructure['component_type'] = substr($atomdata, 4, 4);
$atomstructure['component_subtype'] = substr($atomdata, 8, 4);
$atomstructure['component_manufacturer'] = substr($atomdata, 12, 4);
$atomstructure['component_flags_raw'] = getid3_lib::BigEndian2Int(substr($atomdata, 16, 4));
$atomstructure['component_flags_mask'] = getid3_lib::BigEndian2Int(substr($atomdata, 20, 4));
$atomstructure['component_min_version'] = getid3_lib::BigEndian2Int(substr($atomdata, 24, 4));
break;
case 'rmdr': // Reference Movie Data Rate atom
$atomstructure['version'] = getid3_lib::BigEndian2Int(substr($atomdata, 0, 1));
$atomstructure['flags_raw'] = getid3_lib::BigEndian2Int(substr($atomdata, 1, 3)); // hardcoded: 0x0000
$atomstructure['data_rate'] = getid3_lib::BigEndian2Int(substr($atomdata, 4, 4));
$atomstructure['data_rate_bps'] = $atomstructure['data_rate'] * 10;
break;
case 'rmla': // Reference Movie Language Atom
$atomstructure['version'] = getid3_lib::BigEndian2Int(substr($atomdata, 0, 1));
$atomstructure['flags_raw'] = getid3_lib::BigEndian2Int(substr($atomdata, 1, 3)); // hardcoded: 0x0000
$atomstructure['language_id'] = getid3_lib::BigEndian2Int(substr($atomdata, 4, 2));
$atomstructure['language'] = $this->QuicktimeLanguageLookup($atomstructure['language_id']);
if (empty($ThisFileInfo['comments']['language']) || (!in_array($atomstructure['language'], $ThisFileInfo['comments']['language']))) {
$ThisFileInfo['comments']['language'][] = $atomstructure['language'];
}
break;
case 'rmla': // Reference Movie Language Atom
$atomstructure['version'] = getid3_lib::BigEndian2Int(substr($atomdata, 0, 1));
$atomstructure['flags_raw'] = getid3_lib::BigEndian2Int(substr($atomdata, 1, 3)); // hardcoded: 0x0000
$atomstructure['track_id'] = getid3_lib::BigEndian2Int(substr($atomdata, 4, 2));
break;
case 'ptv ': // Print To Video - defines a movie's full screen mode
// http://developer.apple.com/documentation/QuickTime/APIREF/SOURCESIV/at_ptv-_pg.htm
$atomstructure['display_size_raw'] = getid3_lib::BigEndian2Int(substr($atomdata, 0, 2));
$atomstructure['reserved_1'] = getid3_lib::BigEndian2Int(substr($atomdata, 2, 2)); // hardcoded: 0x0000
$atomstructure['reserved_2'] = getid3_lib::BigEndian2Int(substr($atomdata, 4, 2)); // hardcoded: 0x0000
$atomstructure['slide_show_flag'] = getid3_lib::BigEndian2Int(substr($atomdata, 6, 1));
$atomstructure['play_on_open_flag'] = getid3_lib::BigEndian2Int(substr($atomdata, 7, 1));
$atomstructure['flags']['play_on_open'] = (bool) $atomstructure['play_on_open_flag'];
$atomstructure['flags']['slide_show'] = (bool) $atomstructure['slide_show_flag'];
$ptv_lookup[0] = 'normal';
$ptv_lookup[1] = 'double';
$ptv_lookup[2] = 'half';
$ptv_lookup[3] = 'full';
$ptv_lookup[4] = 'current';
if (isset($ptv_lookup[$atomstructure['display_size_raw']])) {
$atomstructure['display_size'] = $ptv_lookup[$atomstructure['display_size_raw']];
} else {
$ThisFileInfo['warning'][] = 'unknown "ptv " display constant ('.$atomstructure['display_size_raw'].')';
}
break;
case 'stsd': // Sample Table Sample Description atom
$atomstructure['version'] = getid3_lib::BigEndian2Int(substr($atomdata, 0, 1));
$atomstructure['flags_raw'] = getid3_lib::BigEndian2Int(substr($atomdata, 1, 3)); // hardcoded: 0x0000
$atomstructure['number_entries'] = getid3_lib::BigEndian2Int(substr($atomdata, 4, 4));
$stsdEntriesDataOffset = 8;
for ($i = 0; $i < $atomstructure['number_entries']; $i++) {
$atomstructure['sample_description_table'][$i]['size'] = getid3_lib::BigEndian2Int(substr($atomdata, $stsdEntriesDataOffset, 4));
$stsdEntriesDataOffset += 4;
$atomstructure['sample_description_table'][$i]['data_format'] = substr($atomdata, $stsdEntriesDataOffset, 4);
$stsdEntriesDataOffset += 4;
$atomstructure['sample_description_table'][$i]['reserved'] = getid3_lib::BigEndian2Int(substr($atomdata, $stsdEntriesDataOffset, 6));
$stsdEntriesDataOffset += 6;
$atomstructure['sample_description_table'][$i]['reference_index'] = getid3_lib::BigEndian2Int(substr($atomdata, $stsdEntriesDataOffset, 2));
$stsdEntriesDataOffset += 2;
$atomstructure['sample_description_table'][$i]['data'] = substr($atomdata, $stsdEntriesDataOffset, ($atomstructure['sample_description_table'][$i]['size'] - 4 - 4 - 6 - 2));
$stsdEntriesDataOffset += ($atomstructure['sample_description_table'][$i]['size'] - 4 - 4 - 6 - 2);
$atomstructure['sample_description_table'][$i]['encoder_version'] = getid3_lib::BigEndian2Int(substr($atomstructure['sample_description_table'][$i]['data'], 0, 2));
$atomstructure['sample_description_table'][$i]['encoder_revision'] = getid3_lib::BigEndian2Int(substr($atomstructure['sample_description_table'][$i]['data'], 2, 2));
$atomstructure['sample_description_table'][$i]['encoder_vendor'] = substr($atomstructure['sample_description_table'][$i]['data'], 4, 4);
switch ($atomstructure['sample_description_table'][$i]['encoder_vendor']) {
case "\x00\x00\x00\x00":
// audio atom
$atomstructure['sample_description_table'][$i]['audio_channels'] = getid3_lib::BigEndian2Int(substr($atomstructure['sample_description_table'][$i]['data'], 8, 2));
$atomstructure['sample_description_table'][$i]['audio_bit_depth'] = getid3_lib::BigEndian2Int(substr($atomstructure['sample_description_table'][$i]['data'], 10, 2));
$atomstructure['sample_description_table'][$i]['audio_compression_id'] = getid3_lib::BigEndian2Int(substr($atomstructure['sample_description_table'][$i]['data'], 12, 2));
$atomstructure['sample_description_table'][$i]['audio_packet_size'] = getid3_lib::BigEndian2Int(substr($atomstructure['sample_description_table'][$i]['data'], 14, 2));
$atomstructure['sample_description_table'][$i]['audio_sample_rate'] = getid3_lib::FixedPoint16_16(substr($atomstructure['sample_description_table'][$i]['data'], 16, 4));
switch ($atomstructure['sample_description_table'][$i]['data_format']) {
case 'avc1':
case 'mp4v':
$ThisFileInfo['fileformat'] = 'mp4';
$ThisFileInfo['video']['fourcc'] = $atomstructure['sample_description_table'][$i]['data_format'];
$ThisFileInfo['warning'][] = 'This version ('.GETID3_VERSION.') of getID3() does not fully support MPEG-4 audio/video streams';
break;
case 'qtvr':
$ThisFileInfo['video']['dataformat'] = 'quicktimevr';
break;
case 'mp4a':
default:
$ThisFileInfo['quicktime']['audio']['codec'] = $this->QuicktimeAudioCodecLookup($atomstructure['sample_description_table'][$i]['data_format']);
$ThisFileInfo['quicktime']['audio']['sample_rate'] = $atomstructure['sample_description_table'][$i]['audio_sample_rate'];
$ThisFileInfo['quicktime']['audio']['channels'] = $atomstructure['sample_description_table'][$i]['audio_channels'];
$ThisFileInfo['quicktime']['audio']['bit_depth'] = $atomstructure['sample_description_table'][$i]['audio_bit_depth'];
$ThisFileInfo['audio']['codec'] = $ThisFileInfo['quicktime']['audio']['codec'];
$ThisFileInfo['audio']['sample_rate'] = $ThisFileInfo['quicktime']['audio']['sample_rate'];
$ThisFileInfo['audio']['channels'] = $ThisFileInfo['quicktime']['audio']['channels'];
$ThisFileInfo['audio']['bits_per_sample'] = $ThisFileInfo['quicktime']['audio']['bit_depth'];
switch ($atomstructure['sample_description_table'][$i]['data_format']) {
case 'raw ': // PCM
case 'alac': // Apple Lossless Audio Codec
$ThisFileInfo['audio']['lossless'] = true;
break;
default:
$ThisFileInfo['audio']['lossless'] = false;
break;
}
break;
}
break;
default:
switch ($atomstructure['sample_description_table'][$i]['data_format']) {
case 'mp4s':
$ThisFileInfo['fileformat'] = 'mp4';
break;
default:
// video atom
$atomstructure['sample_description_table'][$i]['video_temporal_quality'] = getid3_lib::BigEndian2Int(substr($atomstructure['sample_description_table'][$i]['data'], 8, 4));
$atomstructure['sample_description_table'][$i]['video_spatial_quality'] = getid3_lib::BigEndian2Int(substr($atomstructure['sample_description_table'][$i]['data'], 12, 4));
$atomstructure['sample_description_table'][$i]['video_frame_width'] = getid3_lib::BigEndian2Int(substr($atomstructure['sample_description_table'][$i]['data'], 16, 2));
$atomstructure['sample_description_table'][$i]['video_frame_height'] = getid3_lib::BigEndian2Int(substr($atomstructure['sample_description_table'][$i]['data'], 18, 2));
$atomstructure['sample_description_table'][$i]['video_resolution_x'] = getid3_lib::FixedPoint16_16(substr($atomstructure['sample_description_table'][$i]['data'], 20, 4));
$atomstructure['sample_description_table'][$i]['video_resolution_y'] = getid3_lib::FixedPoint16_16(substr($atomstructure['sample_description_table'][$i]['data'], 24, 4));
$atomstructure['sample_description_table'][$i]['video_data_size'] = getid3_lib::BigEndian2Int(substr($atomstructure['sample_description_table'][$i]['data'], 28, 4));
$atomstructure['sample_description_table'][$i]['video_frame_count'] = getid3_lib::BigEndian2Int(substr($atomstructure['sample_description_table'][$i]['data'], 32, 2));
$atomstructure['sample_description_table'][$i]['video_encoder_name_len'] = getid3_lib::BigEndian2Int(substr($atomstructure['sample_description_table'][$i]['data'], 34, 1));
$atomstructure['sample_description_table'][$i]['video_encoder_name'] = substr($atomstructure['sample_description_table'][$i]['data'], 35, $atomstructure['sample_description_table'][$i]['video_encoder_name_len']);
$atomstructure['sample_description_table'][$i]['video_pixel_color_depth'] = getid3_lib::BigEndian2Int(substr($atomstructure['sample_description_table'][$i]['data'], 66, 2));
$atomstructure['sample_description_table'][$i]['video_color_table_id'] = getid3_lib::BigEndian2Int(substr($atomstructure['sample_description_table'][$i]['data'], 68, 2));
$atomstructure['sample_description_table'][$i]['video_pixel_color_type'] = (($atomstructure['sample_description_table'][$i]['video_pixel_color_depth'] > 32) ? 'grayscale' : 'color');
$atomstructure['sample_description_table'][$i]['video_pixel_color_name'] = $this->QuicktimeColorNameLookup($atomstructure['sample_description_table'][$i]['video_pixel_color_depth']);
if ($atomstructure['sample_description_table'][$i]['video_pixel_color_name'] != 'invalid') {
$ThisFileInfo['quicktime']['video']['codec_fourcc'] = $atomstructure['sample_description_table'][$i]['data_format'];
$ThisFileInfo['quicktime']['video']['codec_fourcc_lookup'] = $this->QuicktimeVideoCodecLookup($atomstructure['sample_description_table'][$i]['data_format']);
$ThisFileInfo['quicktime']['video']['codec'] = $atomstructure['sample_description_table'][$i]['video_encoder_name'];
$ThisFileInfo['quicktime']['video']['color_depth'] = $atomstructure['sample_description_table'][$i]['video_pixel_color_depth'];
$ThisFileInfo['quicktime']['video']['color_depth_name'] = $atomstructure['sample_description_table'][$i]['video_pixel_color_name'];
$ThisFileInfo['video']['codec'] = $ThisFileInfo['quicktime']['video']['codec'];
$ThisFileInfo['video']['bits_per_sample'] = $ThisFileInfo['quicktime']['video']['color_depth'];
}
$ThisFileInfo['video']['lossless'] = false;
$ThisFileInfo['video']['pixel_aspect_ratio'] = (float) 1;
break;
}
break;
}
switch (strtolower($atomstructure['sample_description_table'][$i]['data_format'])) {
case 'mp4a':
$ThisFileInfo['audio']['dataformat'] = 'mp4';
$ThisFileInfo['quicktime']['audio']['codec'] = 'mp4';
break;
case '3ivx':
case '3iv1':
case '3iv2':
$ThisFileInfo['video']['dataformat'] = '3ivx';
break;
case 'xvid':
$ThisFileInfo['video']['dataformat'] = 'xvid';
break;
case 'mp4v':
$ThisFileInfo['video']['dataformat'] = 'mpeg4';
break;
case 'divx':
case 'div1':
case 'div2':
case 'div3':
case 'div4':
case 'div5':
case 'div6':
$TDIVXileInfo['video']['dataformat'] = 'divx';
break;
default:
// do nothing
break;
}
unset($atomstructure['sample_description_table'][$i]['data']);
}
break;
case 'stts': // Sample Table Time-to-Sample atom
$atomstructure['version'] = getid3_lib::BigEndian2Int(substr($atomdata, 0, 1));
$atomstructure['flags_raw'] = getid3_lib::BigEndian2Int(substr($atomdata, 1, 3)); // hardcoded: 0x0000
$atomstructure['number_entries'] = getid3_lib::BigEndian2Int(substr($atomdata, 4, 4));
$sttsEntriesDataOffset = 8;
//$FrameRateCalculatorArray = array();
$frames_count = 0;
for ($i = 0; $i < $atomstructure['number_entries']; $i++) {
$atomstructure['time_to_sample_table'][$i]['sample_count'] = getid3_lib::BigEndian2Int(substr($atomdata, $sttsEntriesDataOffset, 4));
$sttsEntriesDataOffset += 4;
$atomstructure['time_to_sample_table'][$i]['sample_duration'] = getid3_lib::BigEndian2Int(substr($atomdata, $sttsEntriesDataOffset, 4));
$sttsEntriesDataOffset += 4;
$frames_count += $atomstructure['time_to_sample_table'][$i]['sample_count'];
// THIS SECTION REPLACED WITH CODE IN "stbl" ATOM
//if (!empty($ThisFileInfo['quicktime']['time_scale']) && (@$atomstructure['time_to_sample_table'][$i]['sample_duration'] > 0)) {
// $stts_new_framerate = $ThisFileInfo['quicktime']['time_scale'] / $atomstructure['time_to_sample_table'][$i]['sample_duration'];
// if ($stts_new_framerate <= 60) {
// // some atoms have durations of "1" giving a very large framerate, which probably is not right
// $ThisFileInfo['video']['frame_rate'] = max(@$ThisFileInfo['video']['frame_rate'], $stts_new_framerate);
// }
//}
//
//@$FrameRateCalculatorArray[($ThisFileInfo['quicktime']['time_scale'] / $atomstructure['time_to_sample_table'][$i]['sample_duration'])] += $atomstructure['time_to_sample_table'][$i]['sample_count'];
}
$ThisFileInfo['quicktime']['stts_framecount'][] = $frames_count;
//$sttsFramesTotal = 0;
//$sttsSecondsTotal = 0;
//foreach ($FrameRateCalculatorArray as $frames_per_second => $frame_count) {
// if (($frames_per_second > 60) || ($frames_per_second < 1)) {
// // not video FPS information, probably audio information
// $sttsFramesTotal = 0;
// $sttsSecondsTotal = 0;
// break;
// }
// $sttsFramesTotal += $frame_count;
// $sttsSecondsTotal += $frame_count / $frames_per_second;
//}
//if (($sttsFramesTotal > 0) && ($sttsSecondsTotal > 0)) {
// if (($sttsFramesTotal / $sttsSecondsTotal) > @$ThisFileInfo['video']['frame_rate']) {
// $ThisFileInfo['video']['frame_rate'] = $sttsFramesTotal / $sttsSecondsTotal;
// }
//}
break;
case 'stss': // Sample Table Sync Sample (key frames) atom
if ($ParseAllPossibleAtoms) {
$atomstructure['version'] = getid3_lib::BigEndian2Int(substr($atomdata, 0, 1));
$atomstructure['flags_raw'] = getid3_lib::BigEndian2Int(substr($atomdata, 1, 3)); // hardcoded: 0x0000
$atomstructure['number_entries'] = getid3_lib::BigEndian2Int(substr($atomdata, 4, 4));
$stssEntriesDataOffset = 8;
for ($i = 0; $i < $atomstructure['number_entries']; $i++) {
$atomstructure['time_to_sample_table'][$i] = getid3_lib::BigEndian2Int(substr($atomdata, $stssEntriesDataOffset, 4));
$stssEntriesDataOffset += 4;
}
}
break;
case 'stsc': // Sample Table Sample-to-Chunk atom
if ($ParseAllPossibleAtoms) {
$atomstructure['version'] = getid3_lib::BigEndian2Int(substr($atomdata, 0, 1));
$atomstructure['flags_raw'] = getid3_lib::BigEndian2Int(substr($atomdata, 1, 3)); // hardcoded: 0x0000
$atomstructure['number_entries'] = getid3_lib::BigEndian2Int(substr($atomdata, 4, 4));
$stscEntriesDataOffset = 8;
for ($i = 0; $i < $atomstructure['number_entries']; $i++) {
$atomstructure['sample_to_chunk_table'][$i]['first_chunk'] = getid3_lib::BigEndian2Int(substr($atomdata, $stscEntriesDataOffset, 4));
$stscEntriesDataOffset += 4;
$atomstructure['sample_to_chunk_table'][$i]['samples_per_chunk'] = getid3_lib::BigEndian2Int(substr($atomdata, $stscEntriesDataOffset, 4));
$stscEntriesDataOffset += 4;
$atomstructure['sample_to_chunk_table'][$i]['sample_description'] = getid3_lib::BigEndian2Int(substr($atomdata, $stscEntriesDataOffset, 4));
$stscEntriesDataOffset += 4;
}
}
break;
case 'stsz': // Sample Table SiZe atom
if ($ParseAllPossibleAtoms) {
$atomstructure['version'] = getid3_lib::BigEndian2Int(substr($atomdata, 0, 1));
$atomstructure['flags_raw'] = getid3_lib::BigEndian2Int(substr($atomdata, 1, 3)); // hardcoded: 0x0000
$atomstructure['sample_size'] = getid3_lib::BigEndian2Int(substr($atomdata, 4, 4));
$atomstructure['number_entries'] = getid3_lib::BigEndian2Int(substr($atomdata, 8, 4));
$stszEntriesDataOffset = 12;
if ($atomstructure['sample_size'] == 0) {
for ($i = 0; $i < $atomstructure['number_entries']; $i++) {
$atomstructure['sample_size_table'][$i] = getid3_lib::BigEndian2Int(substr($atomdata, $stszEntriesDataOffset, 4));
$stszEntriesDataOffset += 4;
}
}
}
break;
case 'stco': // Sample Table Chunk Offset atom
if ($ParseAllPossibleAtoms) {
$atomstructure['version'] = getid3_lib::BigEndian2Int(substr($atomdata, 0, 1));
$atomstructure['flags_raw'] = getid3_lib::BigEndian2Int(substr($atomdata, 1, 3)); // hardcoded: 0x0000
$atomstructure['number_entries'] = getid3_lib::BigEndian2Int(substr($atomdata, 4, 4));
$stcoEntriesDataOffset = 8;
for ($i = 0; $i < $atomstructure['number_entries']; $i++) {
$atomstructure['chunk_offset_table'][$i] = getid3_lib::BigEndian2Int(substr($atomdata, $stcoEntriesDataOffset, 4));
$stcoEntriesDataOffset += 4;
}
}
break;
case 'co64': // Chunk Offset 64-bit (version of "stco" that supports > 2GB files)
if ($ParseAllPossibleAtoms) {
$atomstructure['version'] = getid3_lib::BigEndian2Int(substr($atomdata, 0, 1));
$atomstructure['flags_raw'] = getid3_lib::BigEndian2Int(substr($atomdata, 1, 3)); // hardcoded: 0x0000
$atomstructure['number_entries'] = getid3_lib::BigEndian2Int(substr($atomdata, 4, 4));
$stcoEntriesDataOffset = 8;
for ($i = 0; $i < $atomstructure['number_entries']; $i++) {
$atomstructure['chunk_offset_table'][$i] = getid3_lib::BigEndian2Int(substr($atomdata, $stcoEntriesDataOffset, 8));
$stcoEntriesDataOffset += 8;
}
}
break;
case 'dref': // Data REFerence atom
$atomstructure['version'] = getid3_lib::BigEndian2Int(substr($atomdata, 0, 1));
$atomstructure['flags_raw'] = getid3_lib::BigEndian2Int(substr($atomdata, 1, 3)); // hardcoded: 0x0000
$atomstructure['number_entries'] = getid3_lib::BigEndian2Int(substr($atomdata, 4, 4));
$drefDataOffset = 8;
for ($i = 0; $i < $atomstructure['number_entries']; $i++) {
$atomstructure['data_references'][$i]['size'] = getid3_lib::BigEndian2Int(substr($atomdata, $drefDataOffset, 4));
$drefDataOffset += 4;
$atomstructure['data_references'][$i]['type'] = substr($atomdata, $drefDataOffset, 4);
$drefDataOffset += 4;
$atomstructure['data_references'][$i]['version'] = getid3_lib::BigEndian2Int(substr($atomdata, $drefDataOffset, 1));
$drefDataOffset += 1;
$atomstructure['data_references'][$i]['flags_raw'] = getid3_lib::BigEndian2Int(substr($atomdata, $drefDataOffset, 3)); // hardcoded: 0x0000
$drefDataOffset += 3;
$atomstructure['data_references'][$i]['data'] = substr($atomdata, $drefDataOffset, ($atomstructure['data_references'][$i]['size'] - 4 - 4 - 1 - 3));
$drefDataOffset += ($atomstructure['data_references'][$i]['size'] - 4 - 4 - 1 - 3);
$atomstructure['data_references'][$i]['flags']['self_reference'] = (bool) ($atomstructure['data_references'][$i]['flags_raw'] & 0x001);
}
break;
case 'gmin': // base Media INformation atom
$atomstructure['version'] = getid3_lib::BigEndian2Int(substr($atomdata, 0, 1));
$atomstructure['flags_raw'] = getid3_lib::BigEndian2Int(substr($atomdata, 1, 3)); // hardcoded: 0x0000
$atomstructure['graphics_mode'] = getid3_lib::BigEndian2Int(substr($atomdata, 4, 2));
$atomstructure['opcolor_red'] = getid3_lib::BigEndian2Int(substr($atomdata, 6, 2));
$atomstructure['opcolor_green'] = getid3_lib::BigEndian2Int(substr($atomdata, 8, 2));
$atomstructure['opcolor_blue'] = getid3_lib::BigEndian2Int(substr($atomdata, 10, 2));
$atomstructure['balance'] = getid3_lib::BigEndian2Int(substr($atomdata, 12, 2));
$atomstructure['reserved'] = getid3_lib::BigEndian2Int(substr($atomdata, 14, 2));
break;
case 'smhd': // Sound Media information HeaDer atom
$atomstructure['version'] = getid3_lib::BigEndian2Int(substr($atomdata, 0, 1));
$atomstructure['flags_raw'] = getid3_lib::BigEndian2Int(substr($atomdata, 1, 3)); // hardcoded: 0x0000
$atomstructure['balance'] = getid3_lib::BigEndian2Int(substr($atomdata, 4, 2));
$atomstructure['reserved'] = getid3_lib::BigEndian2Int(substr($atomdata, 6, 2));
break;
case 'vmhd': // Video Media information HeaDer atom
$atomstructure['version'] = getid3_lib::BigEndian2Int(substr($atomdata, 0, 1));
$atomstructure['flags_raw'] = getid3_lib::BigEndian2Int(substr($atomdata, 1, 3));
$atomstructure['graphics_mode'] = getid3_lib::BigEndian2Int(substr($atomdata, 4, 2));
$atomstructure['opcolor_red'] = getid3_lib::BigEndian2Int(substr($atomdata, 6, 2));
$atomstructure['opcolor_green'] = getid3_lib::BigEndian2Int(substr($atomdata, 8, 2));
$atomstructure['opcolor_blue'] = getid3_lib::BigEndian2Int(substr($atomdata, 10, 2));
$atomstructure['flags']['no_lean_ahead'] = (bool) ($atomstructure['flags_raw'] & 0x001);
break;
case 'hdlr': // HanDLeR reference atom
$atomstructure['version'] = getid3_lib::BigEndian2Int(substr($atomdata, 0, 1));
$atomstructure['flags_raw'] = getid3_lib::BigEndian2Int(substr($atomdata, 1, 3)); // hardcoded: 0x0000
$atomstructure['component_type'] = substr($atomdata, 4, 4);
$atomstructure['component_subtype'] = substr($atomdata, 8, 4);
$atomstructure['component_manufacturer'] = substr($atomdata, 12, 4);
$atomstructure['component_flags_raw'] = getid3_lib::BigEndian2Int(substr($atomdata, 16, 4));
$atomstructure['component_flags_mask'] = getid3_lib::BigEndian2Int(substr($atomdata, 20, 4));
$atomstructure['component_name'] = $this->Pascal2String(substr($atomdata, 24));
if (($atomstructure['component_subtype'] == 'STpn') && ($atomstructure['component_manufacturer'] == 'zzzz')) {
$ThisFileInfo['video']['dataformat'] = 'quicktimevr';
}
break;
case 'mdhd': // MeDia HeaDer atom
$atomstructure['version'] = getid3_lib::BigEndian2Int(substr($atomdata, 0, 1));
$atomstructure['flags_raw'] = getid3_lib::BigEndian2Int(substr($atomdata, 1, 3)); // hardcoded: 0x0000
$atomstructure['creation_time'] = getid3_lib::BigEndian2Int(substr($atomdata, 4, 4));
$atomstructure['modify_time'] = getid3_lib::BigEndian2Int(substr($atomdata, 8, 4));
$atomstructure['time_scale'] = getid3_lib::BigEndian2Int(substr($atomdata, 12, 4));
$atomstructure['duration'] = getid3_lib::BigEndian2Int(substr($atomdata, 16, 4));
$atomstructure['language_id'] = getid3_lib::BigEndian2Int(substr($atomdata, 20, 2));
$atomstructure['quality'] = getid3_lib::BigEndian2Int(substr($atomdata, 22, 2));
if ($atomstructure['time_scale'] == 0) {
$ThisFileInfo['error'][] = 'Corrupt Quicktime file: mdhd.time_scale == zero';
return false;
}
$ThisFileInfo['quicktime']['time_scale'] = max(@$ThisFileInfo['quicktime']['time_scale'], $atomstructure['time_scale']);
$atomstructure['creation_time_unix'] = getid3_lib::DateMac2Unix($atomstructure['creation_time']);
$atomstructure['modify_time_unix'] = getid3_lib::DateMac2Unix($atomstructure['modify_time']);
$atomstructure['playtime_seconds'] = $atomstructure['duration'] / $atomstructure['time_scale'];
$atomstructure['language'] = $this->QuicktimeLanguageLookup($atomstructure['language_id']);
if (empty($ThisFileInfo['comments']['language']) || (!in_array($atomstructure['language'], $ThisFileInfo['comments']['language']))) {
$ThisFileInfo['comments']['language'][] = $atomstructure['language'];
}
break;
case 'pnot': // Preview atom
$atomstructure['modification_date'] = getid3_lib::BigEndian2Int(substr($atomdata, 0, 4)); // "standard Macintosh format"
$atomstructure['version_number'] = getid3_lib::BigEndian2Int(substr($atomdata, 4, 2)); // hardcoded: 0x00
$atomstructure['atom_type'] = substr($atomdata, 6, 4); // usually: 'PICT'
$atomstructure['atom_index'] = getid3_lib::BigEndian2Int(substr($atomdata, 10, 2)); // usually: 0x01
$atomstructure['modification_date_unix'] = getid3_lib::DateMac2Unix($atomstructure['modification_date']);
break;
case 'crgn': // Clipping ReGioN atom
$atomstructure['region_size'] = getid3_lib::BigEndian2Int(substr($atomdata, 0, 2)); // The Region size, Region boundary box,
$atomstructure['boundary_box'] = getid3_lib::BigEndian2Int(substr($atomdata, 2, 8)); // and Clipping region data fields
$atomstructure['clipping_data'] = substr($atomdata, 10); // constitute a QuickDraw region.
break;
case 'load': // track LOAD settings atom
$atomstructure['preload_start_time'] = getid3_lib::BigEndian2Int(substr($atomdata, 0, 4));
$atomstructure['preload_duration'] = getid3_lib::BigEndian2Int(substr($atomdata, 4, 4));
$atomstructure['preload_flags_raw'] = getid3_lib::BigEndian2Int(substr($atomdata, 8, 4));
$atomstructure['default_hints_raw'] = getid3_lib::BigEndian2Int(substr($atomdata, 12, 4));
$atomstructure['default_hints']['double_buffer'] = (bool) ($atomstructure['default_hints_raw'] & 0x0020);
$atomstructure['default_hints']['high_quality'] = (bool) ($atomstructure['default_hints_raw'] & 0x0100);
break;
case 'tmcd': // TiMe CoDe atom
case 'chap': // CHAPter list atom
case 'sync': // SYNChronization atom
case 'scpt': // tranSCriPT atom
case 'ssrc': // non-primary SouRCe atom
for ($i = 0; $i < (strlen($atomdata) % 4); $i++) {
$atomstructure['track_id'][$i] = getid3_lib::BigEndian2Int(substr($atomdata, $i * 4, 4));
}
break;
case 'elst': // Edit LiST atom
$atomstructure['version'] = getid3_lib::BigEndian2Int(substr($atomdata, 0, 1));
$atomstructure['flags_raw'] = getid3_lib::BigEndian2Int(substr($atomdata, 1, 3)); // hardcoded: 0x0000
$atomstructure['number_entries'] = getid3_lib::BigEndian2Int(substr($atomdata, 4, 4));
for ($i = 0; $i < $atomstructure['number_entries']; $i++ ) {
$atomstructure['edit_list'][$i]['track_duration'] = getid3_lib::BigEndian2Int(substr($atomdata, 8 + ($i * 12) + 0, 4));
$atomstructure['edit_list'][$i]['media_time'] = getid3_lib::BigEndian2Int(substr($atomdata, 8 + ($i * 12) + 4, 4));
$atomstructure['edit_list'][$i]['media_rate'] = getid3_lib::FixedPoint16_16(substr($atomdata, 8 + ($i * 12) + 8, 4));
}
break;
case 'kmat': // compressed MATte atom
$atomstructure['version'] = getid3_lib::BigEndian2Int(substr($atomdata, 0, 1));
$atomstructure['flags_raw'] = getid3_lib::BigEndian2Int(substr($atomdata, 1, 3)); // hardcoded: 0x0000
$atomstructure['matte_data_raw'] = substr($atomdata, 4);
break;
case 'ctab': // Color TABle atom
$atomstructure['color_table_seed'] = getid3_lib::BigEndian2Int(substr($atomdata, 0, 4)); // hardcoded: 0x00000000
$atomstructure['color_table_flags'] = getid3_lib::BigEndian2Int(substr($atomdata, 4, 2)); // hardcoded: 0x8000
$atomstructure['color_table_size'] = getid3_lib::BigEndian2Int(substr($atomdata, 6, 2)) + 1;
for ($colortableentry = 0; $colortableentry < $atomstructure['color_table_size']; $colortableentry++) {
$atomstructure['color_table'][$colortableentry]['alpha'] = getid3_lib::BigEndian2Int(substr($atomdata, 8 + ($colortableentry * 8) + 0, 2));
$atomstructure['color_table'][$colortableentry]['red'] = getid3_lib::BigEndian2Int(substr($atomdata, 8 + ($colortableentry * 8) + 2, 2));
$atomstructure['color_table'][$colortableentry]['green'] = getid3_lib::BigEndian2Int(substr($atomdata, 8 + ($colortableentry * 8) + 4, 2));
$atomstructure['color_table'][$colortableentry]['blue'] = getid3_lib::BigEndian2Int(substr($atomdata, 8 + ($colortableentry * 8) + 6, 2));
}
break;
case 'mvhd': // MoVie HeaDer atom
$atomstructure['version'] = getid3_lib::BigEndian2Int(substr($atomdata, 0, 1));
$atomstructure['flags_raw'] = getid3_lib::BigEndian2Int(substr($atomdata, 1, 3));
$atomstructure['creation_time'] = getid3_lib::BigEndian2Int(substr($atomdata, 4, 4));
$atomstructure['modify_time'] = getid3_lib::BigEndian2Int(substr($atomdata, 8, 4));
$atomstructure['time_scale'] = getid3_lib::BigEndian2Int(substr($atomdata, 12, 4));
$atomstructure['duration'] = getid3_lib::BigEndian2Int(substr($atomdata, 16, 4));
$atomstructure['preferred_rate'] = getid3_lib::FixedPoint16_16(substr($atomdata, 20, 4));
$atomstructure['preferred_volume'] = getid3_lib::FixedPoint8_8(substr($atomdata, 24, 2));
$atomstructure['reserved'] = substr($atomdata, 26, 10);
$atomstructure['matrix_a'] = getid3_lib::FixedPoint16_16(substr($atomdata, 36, 4));
$atomstructure['matrix_b'] = getid3_lib::FixedPoint16_16(substr($atomdata, 40, 4));
$atomstructure['matrix_u'] = getid3_lib::FixedPoint2_30(substr($atomdata, 44, 4));
$atomstructure['matrix_c'] = getid3_lib::FixedPoint16_16(substr($atomdata, 48, 4));
$atomstructure['matrix_d'] = getid3_lib::FixedPoint16_16(substr($atomdata, 52, 4));
$atomstructure['matrix_v'] = getid3_lib::FixedPoint2_30(substr($atomdata, 56, 4));
$atomstructure['matrix_x'] = getid3_lib::FixedPoint16_16(substr($atomdata, 60, 4));
$atomstructure['matrix_y'] = getid3_lib::FixedPoint16_16(substr($atomdata, 64, 4));
$atomstructure['matrix_w'] = getid3_lib::FixedPoint2_30(substr($atomdata, 68, 4));
$atomstructure['preview_time'] = getid3_lib::BigEndian2Int(substr($atomdata, 72, 4));
$atomstructure['preview_duration'] = getid3_lib::BigEndian2Int(substr($atomdata, 76, 4));
$atomstructure['poster_time'] = getid3_lib::BigEndian2Int(substr($atomdata, 80, 4));
$atomstructure['selection_time'] = getid3_lib::BigEndian2Int(substr($atomdata, 84, 4));
$atomstructure['selection_duration'] = getid3_lib::BigEndian2Int(substr($atomdata, 88, 4));
$atomstructure['current_time'] = getid3_lib::BigEndian2Int(substr($atomdata, 92, 4));
$atomstructure['next_track_id'] = getid3_lib::BigEndian2Int(substr($atomdata, 96, 4));
if ($atomstructure['time_scale'] == 0) {
$ThisFileInfo['error'][] = 'Corrupt Quicktime file: mvhd.time_scale == zero';
return false;
}
$atomstructure['creation_time_unix'] = getid3_lib::DateMac2Unix($atomstructure['creation_time']);
$atomstructure['modify_time_unix'] = getid3_lib::DateMac2Unix($atomstructure['modify_time']);
$ThisFileInfo['quicktime']['time_scale'] = max(@$ThisFileInfo['quicktime']['time_scale'], $atomstructure['time_scale']);
$ThisFileInfo['quicktime']['display_scale'] = $atomstructure['matrix_a'];
$ThisFileInfo['playtime_seconds'] = $atomstructure['duration'] / $atomstructure['time_scale'];
break;
case 'tkhd': // TracK HeaDer atom
$atomstructure['version'] = getid3_lib::BigEndian2Int(substr($atomdata, 0, 1));
$atomstructure['flags_raw'] = getid3_lib::BigEndian2Int(substr($atomdata, 1, 3));
$atomstructure['creation_time'] = getid3_lib::BigEndian2Int(substr($atomdata, 4, 4));
$atomstructure['modify_time'] = getid3_lib::BigEndian2Int(substr($atomdata, 8, 4));
$atomstructure['trackid'] = getid3_lib::BigEndian2Int(substr($atomdata, 12, 4));
$atomstructure['reserved1'] = getid3_lib::BigEndian2Int(substr($atomdata, 16, 4));
$atomstructure['duration'] = getid3_lib::BigEndian2Int(substr($atomdata, 20, 4));
$atomstructure['reserved2'] = getid3_lib::BigEndian2Int(substr($atomdata, 24, 8));
$atomstructure['layer'] = getid3_lib::BigEndian2Int(substr($atomdata, 32, 2));
$atomstructure['alternate_group'] = getid3_lib::BigEndian2Int(substr($atomdata, 34, 2));
$atomstructure['volume'] = getid3_lib::FixedPoint8_8(substr($atomdata, 36, 2));
$atomstructure['reserved3'] = getid3_lib::BigEndian2Int(substr($atomdata, 38, 2));
$atomstructure['matrix_a'] = getid3_lib::FixedPoint16_16(substr($atomdata, 40, 4));
$atomstructure['matrix_b'] = getid3_lib::FixedPoint16_16(substr($atomdata, 44, 4));
$atomstructure['matrix_u'] = getid3_lib::FixedPoint16_16(substr($atomdata, 48, 4));
$atomstructure['matrix_c'] = getid3_lib::FixedPoint16_16(substr($atomdata, 52, 4));
$atomstructure['matrix_d'] = getid3_lib::FixedPoint16_16(substr($atomdata, 56, 4));
$atomstructure['matrix_v'] = getid3_lib::FixedPoint16_16(substr($atomdata, 60, 4));
$atomstructure['matrix_x'] = getid3_lib::FixedPoint2_30(substr($atomdata, 64, 4));
$atomstructure['matrix_y'] = getid3_lib::FixedPoint2_30(substr($atomdata, 68, 4));
$atomstructure['matrix_w'] = getid3_lib::FixedPoint2_30(substr($atomdata, 72, 4));
$atomstructure['width'] = getid3_lib::FixedPoint16_16(substr($atomdata, 76, 4));
$atomstructure['height'] = getid3_lib::FixedPoint16_16(substr($atomdata, 80, 4));
$atomstructure['flags']['enabled'] = (bool) ($atomstructure['flags_raw'] & 0x0001);
$atomstructure['flags']['in_movie'] = (bool) ($atomstructure['flags_raw'] & 0x0002);
$atomstructure['flags']['in_preview'] = (bool) ($atomstructure['flags_raw'] & 0x0004);
$atomstructure['flags']['in_poster'] = (bool) ($atomstructure['flags_raw'] & 0x0008);
$atomstructure['creation_time_unix'] = getid3_lib::DateMac2Unix($atomstructure['creation_time']);
$atomstructure['modify_time_unix'] = getid3_lib::DateMac2Unix($atomstructure['modify_time']);
if (!isset($ThisFileInfo['video']['resolution_x']) || !isset($ThisFileInfo['video']['resolution_y'])) {
$ThisFileInfo['video']['resolution_x'] = $atomstructure['width'];
$ThisFileInfo['video']['resolution_y'] = $atomstructure['height'];
}
if ($atomstructure['flags']['enabled'] == 1) {
$ThisFileInfo['video']['resolution_x'] = max($ThisFileInfo['video']['resolution_x'], $atomstructure['width']);
$ThisFileInfo['video']['resolution_y'] = max($ThisFileInfo['video']['resolution_y'], $atomstructure['height']);
}
if (!empty($ThisFileInfo['video']['resolution_x']) && !empty($ThisFileInfo['video']['resolution_y'])) {
$ThisFileInfo['quicktime']['video']['resolution_x'] = $ThisFileInfo['video']['resolution_x'];
$ThisFileInfo['quicktime']['video']['resolution_y'] = $ThisFileInfo['video']['resolution_y'];
} else {
unset($ThisFileInfo['video']['resolution_x']);
unset($ThisFileInfo['video']['resolution_y']);
unset($ThisFileInfo['quicktime']['video']);
}
break;
case 'meta': // METAdata atom
// http://www.geocities.com/xhelmboyx/quicktime/formats/qti-layout.txt
$NextTagPosition = strpos($atomdata, '©');
while ($NextTagPosition < strlen($atomdata)) {
$metaItemSize = getid3_lib::BigEndian2Int(substr($atomdata, $NextTagPosition - 4, 4)) - 4;
if ($metaItemSize == -4) {
break;
}
$metaItemRaw = substr($atomdata, $NextTagPosition, $metaItemSize);
$metaItemKey = substr($metaItemRaw, 0, 4);
$metaItemData = substr($metaItemRaw, 20);
$NextTagPosition += $metaItemSize + 4;
$this->CopyToAppropriateCommentsSection($metaItemKey, $metaItemData, $ThisFileInfo);
}
break;
case 'ftyp': // FileTYPe (?) atom (for MP4 it seems)
$atomstructure['signature'] = substr($atomdata, 0, 4);
$atomstructure['unknown_1'] = getid3_lib::BigEndian2Int(substr($atomdata, 4, 4));
$atomstructure['fourcc'] = substr($atomdata, 8, 4);
break;
case 'mdat': // Media DATa atom
case 'free': // FREE space atom
case 'skip': // SKIP atom
case 'wide': // 64-bit expansion placeholder atom
// 'mdat' data is too big to deal with, contains no useful metadata
// 'free', 'skip' and 'wide' are just padding, contains no useful data at all
// When writing QuickTime files, it is sometimes necessary to update an atom's size.
// It is impossible to update a 32-bit atom to a 64-bit atom since the 32-bit atom
// is only 8 bytes in size, and the 64-bit atom requires 16 bytes. Therefore, QuickTime
// puts an 8-byte placeholder atom before any atoms it may have to update the size of.
// In this way, if the atom needs to be converted from a 32-bit to a 64-bit atom, the
// placeholder atom can be overwritten to obtain the necessary 8 extra bytes.
// The placeholder atom has a type of kWideAtomPlaceholderType ( 'wide' ).
break;
case 'nsav': // NoSAVe atom
// http://developer.apple.com/technotes/tn/tn2038.html
$atomstructure['data'] = getid3_lib::BigEndian2Int(substr($atomdata, 0, 4));
break;
case 'ctyp': // Controller TYPe atom (seen on QTVR)
// http://homepages.slingshot.co.nz/~helmboy/quicktime/formats/qtm-layout.txt
// some controller names are:
// 0x00 + 'std' for linear movie
// 'none' for no controls