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module.audio-video.quicktime.php
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module.audio-video.quicktime.php
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<?php
// +----------------------------------------------------------------------+
// | PHP version 5 |
// +----------------------------------------------------------------------+
// | Copyright (c) 2002-2006 James Heinrich, Allan Hansen |
// +----------------------------------------------------------------------+
// | This source file is subject to version 2 of the GPL license, |
// | that is bundled with this package in the file license.txt and is |
// | available through the world-wide-web at the following url: |
// | http://www.gnu.org/copyleft/gpl.html |
// +----------------------------------------------------------------------+
// | getID3() - http://getid3.sourceforge.net or http://www.getid3.org |
// +----------------------------------------------------------------------+
// | Authors: James Heinrich <infoØgetid3*org> |
// | Allan Hansen <ahØartemis*dk> |
// +----------------------------------------------------------------------+
// | module.audio-video.quicktime.php |
// | Module for analyzing Quicktime, MP3-in-MP4 and Apple Lossless files. |
// | dependencies: module.audio.mp3.php |
// | zlib support in PHP (optional) |
// +----------------------------------------------------------------------+
//
// $Id: module.audio-video.quicktime.php,v 1.7 2006/11/02 16:03:28 ah Exp $
class getid3_quicktime extends getid3_handler
{
public function Analyze() {
$getid3 = $this->getid3;
$info = &$getid3->info;
$getid3->include_module('audio.mp3');
$info['quicktime'] = array ();
$info_quicktime = &$info['quicktime'];
$info['fileformat'] = 'quicktime';
$info_quicktime['hinting'] = false;
fseek($getid3->fp, $info['avdataoffset'], SEEK_SET);
$offset = $atom_counter = 0;
while ($offset < $info['avdataend']) {
fseek($getid3->fp, $offset, SEEK_SET);
$atom_header = fread($getid3->fp, 8);
$atom_size = getid3_lib::BigEndian2Int(substr($atom_header, 0, 4));
$atom_name = substr($atom_header, 4, 4);
$info_quicktime[$atom_name]['name'] = $atom_name;
$info_quicktime[$atom_name]['size'] = $atom_size;
$info_quicktime[$atom_name]['offset'] = $offset;
if (($offset + $atom_size) > $info['avdataend']) {
throw new getid3_exception('Atom at offset '.$offset.' claims to go beyond end-of-file (length: '.$atom_size.' bytes)');
}
if ($atom_size == 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 ($atom_name) {
case 'mdat': // Media DATa atom
// 'mdat' contains the actual data for the audio/video
if (($atom_size > 8) && (!isset($info['avdataend_tmp']) || ($info_quicktime[$atom_name]['size'] > ($info['avdataend_tmp'] - $info['avdataoffset'])))) {
$info['avdataoffset'] = $info_quicktime[$atom_name]['offset'] + 8;
$old_av_data_end = $info['avdataend'];
$info['avdataend'] = $info_quicktime[$atom_name]['offset'] + $info_quicktime[$atom_name]['size'];
//// MP3
if (!$getid3->include_module_optional('audio.mp3')) {
$getid3->warning('MP3 skipped because mpeg module is missing.');
}
else {
// Clone getid3 - messing with offsets - better safe than sorry
$clone = clone $getid3;
if (getid3_mp3::MPEGaudioHeaderValid(getid3_mp3::MPEGaudioHeaderDecode(fread($clone->fp, 4)))) {
$mp3 = new getid3_mp3($clone);
$mp3->AnalyzeMPEGaudioInfo();
// Import from clone and destroy
if (isset($clone->info['mpeg']['audio'])) {
$info['mpeg']['audio'] = $clone->info['mpeg']['audio'];
$info['audio']['dataformat'] = 'mp3';
$info['audio']['codec'] = (!empty($info['mpeg']['audio']['encoder']) ? $info['mpeg']['audio']['encoder'] : (!empty($info['mpeg']['audio']['codec']) ? $info['mpeg']['audio']['codec'] : (!empty($info['mpeg']['audio']['LAME']) ? 'LAME' :'mp3')));
$info['audio']['sample_rate'] = $info['mpeg']['audio']['sample_rate'];
$info['audio']['channels'] = $info['mpeg']['audio']['channels'];
$info['audio']['bitrate'] = $info['mpeg']['audio']['bitrate'];
$info['audio']['bitrate_mode'] = strtolower($info['mpeg']['audio']['bitrate_mode']);
$info['bitrate'] = $info['audio']['bitrate'];
$getid3->warning($clone->warnings());
unset($clone);
}
}
}
$info['avdataend'] = $old_av_data_end;
unset($old_av_data_end);
}
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:
$atom_hierarchy = array ();
$info_quicktime[$atom_name] = $this->QuicktimeParseAtom($atom_name, $atom_size, fread($getid3->fp, $atom_size), $offset, $atom_hierarchy);
break;
}
$offset += $atom_size;
$atom_counter++;
}
if (!empty($info['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
$info['avdataend'] = $info['avdataend_tmp'];
unset($info['avdataend_tmp']);
}
if (!isset($info['bitrate']) && isset($info['playtime_seconds'])) {
$info['bitrate'] = (($info['avdataend'] - $info['avdataoffset']) * 8) / $info['playtime_seconds'];
}
if (isset($info['bitrate']) && !isset($info['audio']['bitrate']) && !isset($info_quicktime['video'])) {
$info['audio']['bitrate'] = $info['bitrate'];
}
if ((@$info['audio']['dataformat'] == 'mp4') && empty($info['video']['resolution_x'])) {
$info['fileformat'] = 'mp4';
$info['mime_type'] = 'audio/mp4';
unset($info['video']['dataformat']);
}
if (!$getid3->option_extra_info) {
unset($info_quicktime['moov']);
}
if (empty($info['audio']['dataformat']) && !empty($info_quicktime['audio'])) {
$info['audio']['dataformat'] = 'quicktime';
}
if (empty($info['video']['dataformat']) && !empty($info_quicktime['video'])) {
$info['video']['dataformat'] = 'quicktime';
}
return true;
}
private function QuicktimeParseAtom($atom_name, $atom_size, $atom_data, $base_offset, &$atom_hierarchy) {
// http://developer.apple.com/techpubs/quicktime/qtdevdocs/APIREF/INDEX/atomalphaindex.htm
$getid3 = $this->getid3;
$info = &$getid3->info;
$info_quicktime = &$info['quicktime'];
array_push($atom_hierarchy, $atom_name);
$atom_structure['hierarchy'] = implode(' ', $atom_hierarchy);
$atom_structure['name'] = $atom_name;
$atom_structure['size'] = $atom_size;
$atom_structure['offset'] = $base_offset;
switch ($atom_name) {
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 'stbl': // Sample TaBLe 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)
$atom_structure['subatoms'] = $this->QuicktimeParseContainerAtom($atom_data, $base_offset + 8, $atom_hierarchy);
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':
$atom_structure['data_length'] = getid3_lib::BigEndian2Int(substr($atom_data, 0, 2));
$atom_structure['language_id'] = getid3_lib::BigEndian2Int(substr($atom_data, 2, 2));
$atom_structure['data'] = substr($atom_data, 4);
$atom_structure['language'] = $this->QuicktimeLanguageLookup($atom_structure['language_id']);
if (empty($info['comments']['language']) || (!in_array($atom_structure['language'], $info['comments']['language']))) {
$info['comments']['language'][] = $atom_structure['language'];
}
$this->CopyToAppropriateCommentsSection($atom_name, $atom_structure['data']);
break;
case 'play': // auto-PLAY atom
$atom_structure['autoplay'] = (bool)getid3_lib::BigEndian2Int(substr($atom_data, 0, 1));
$info_quicktime['autoplay'] = $atom_structure['autoplay'];
break;
case 'WLOC': // Window LOCation atom
$atom_structure['location_x'] = getid3_lib::BigEndian2Int(substr($atom_data, 0, 2));
$atom_structure['location_y'] = getid3_lib::BigEndian2Int(substr($atom_data, 2, 2));
break;
case 'LOOP': // LOOPing atom
case 'SelO': // play SELection Only atom
case 'AllF': // play ALL Frames atom
$atom_structure['data'] = getid3_lib::BigEndian2Int($atom_data);
break;
case 'name': //
case 'MCPS': // Media Cleaner PRo
case '@PRM': // adobe PReMiere version
case '@PRQ': // adobe PRemiere Quicktime version
$atom_structure['data'] = $atom_data;
break;
case 'cmvd': // Compressed MooV Data atom
// Code by ubergeekØubergeek*tv based on information from
// http://developer.apple.com/quicktime/icefloe/dispatch012.html
$atom_structure['unCompressedSize'] = getid3_lib::BigEndian2Int(substr($atom_data, 0, 4));
$compressed_file_data = substr($atom_data, 4);
if (!function_exists('gzuncompress')) {
$getid3->warning('PHP does not have zlib support - cannot decompress MOV atom at offset '.$atom_structure['offset']);
}
elseif ($uncompressed_header = @gzuncompress($compressed_file_data)) {
$atom_structure['subatoms'] = $this->QuicktimeParseContainerAtom($uncompressed_header, 0, $atom_hierarchy);
} else {
$getid3->warning('Error decompressing compressed MOV atom at offset '.$atom_structure['offset']);
}
break;
case 'dcom': // Data COMpression atom
$atom_structure['compression_id'] = $atom_data;
$atom_structure['compression_text'] = getid3_quicktime::QuicktimeDCOMLookup($atom_data);
break;
case 'rdrf': // Reference movie Data ReFerence atom
getid3_lib::ReadSequence('BigEndian2Int', $atom_structure, $atom_data, 0,
array (
'version' => 1,
'flags_raw' => 3,
'reference_type_name' => -4,
'reference_length' => 4,
)
);
$atom_structure['flags']['internal_data'] = (bool)($atom_structure['flags_raw'] & 0x000001);
switch ($atom_structure['reference_type_name']) {
case 'url ':
$atom_structure['url'] = $this->NoNullString(substr($atom_data, 12));
break;
case 'alis':
$atom_structure['file_alias'] = substr($atom_data, 12);
break;
case 'rsrc':
$atom_structure['resource_alias'] = substr($atom_data, 12);
break;
default:
$atom_structure['data'] = substr($atom_data, 12);
break;
}
break;
case 'rmqu': // Reference Movie QUality atom
$atom_structure['movie_quality'] = getid3_lib::BigEndian2Int($atom_data);
break;
case 'rmcs': // Reference Movie Cpu Speed atom
getid3_lib::ReadSequence('BigEndian2Int', $atom_structure, $atom_data, 0,
array (
'version' => 1,
'flags_raw' => 3, // hardcoded: 0x0000
'cpu_speed_rating' => 2
)
);
break;
case 'rmvc': // Reference Movie Version Check atom
getid3_lib::ReadSequence('BigEndian2Int', $atom_structure, $atom_data, 0,
array (
'version' => 1,
'flags_raw' => 3, // hardcoded: 0x0000
'gestalt_selector' => -4,
'gestalt_value_mask' => 4,
'gestalt_value' => 4,
'gestalt_check_type' => 2
)
);
break;
case 'rmcd': // Reference Movie Component check atom
getid3_lib::ReadSequence('BigEndian2Int', $atom_structure, $atom_data, 0,
array (
'version' => 1,
'flags_raw' => 3, // hardcoded: 0x0000
'component_type' => -4,
'component_subtype' => -4,
'component_manufacturer' => -4,
'component_flags_raw' => 4,
'component_flags_mask' => 4,
'component_min_version' => 4
)
);
break;
case 'rmdr': // Reference Movie Data Rate atom
getid3_lib::ReadSequence('BigEndian2Int', $atom_structure, $atom_data, 0,
array (
'version' => 1,
'flags_raw' => 3, // hardcoded: 0x0000
'data_rate' => 4
)
);
$atom_structure['data_rate_bps'] = $atom_structure['data_rate'] * 10;
break;
case 'rmla': // Reference Movie Language Atom
getid3_lib::ReadSequence('BigEndian2Int', $atom_structure, $atom_data, 0,
array (
'version' => 1,
'flags_raw' => 3, // hardcoded: 0x0000
'language_id' => 2
)
);
$atom_structure['language'] = $this->QuicktimeLanguageLookup($atom_structure['language_id']);
if (empty($info['comments']['language']) || (!in_array($atom_structure['language'], $info['comments']['language']))) {
$info['comments']['language'][] = $atom_structure['language'];
}
break;
case 'rmla': // Reference Movie Language Atom
getid3_lib::ReadSequence('BigEndian2Int', $atom_structure, $atom_data, 0,
array (
'version' => 1,
'flags_raw' => 3, // hardcoded: 0x0000
'track_id' => 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
getid3_lib::ReadSequence('BigEndian2Int', $atom_structure, $atom_data, 0,
array (
'display_size_raw' => 2,
'reserved_1' => 2, // hardcoded: 0x0000
'reserved_2' => 2, // hardcoded: 0x0000
'slide_show_flag' => 1,
'play_on_open_flag' => 1
)
);
$atom_structure['flags']['play_on_open'] = (bool)$atom_structure['play_on_open_flag'];
$atom_structure['flags']['slide_show'] = (bool)$atom_structure['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[$atom_structure['display_size_raw']])) {
$atom_structure['display_size'] = $ptv_lookup[$atom_structure['display_size_raw']];
} else {
$getid3->warning('unknown "ptv " display constant ('.$atom_structure['display_size_raw'].')');
}
break;
case 'stsd': // Sample Table Sample Description atom
getid3_lib::ReadSequence('BigEndian2Int', $atom_structure, $atom_data, 0,
array (
'version' => 1,
'flags_raw' => 3, // hardcoded: 0x0000
'number_entries' => 4
)
);
$stsd_entries_data_offset = 8;
for ($i = 0; $i < $atom_structure['number_entries']; $i++) {
getid3_lib::ReadSequence('BigEndian2Int', $atom_structure['sample_description_table'][$i], $atom_data, $stsd_entries_data_offset,
array (
'size' => 4,
'data_format' => -4,
'reserved' => 6,
'reference_index' => 2
)
);
$atom_structure['sample_description_table'][$i]['data'] = substr($atom_data, 16+$stsd_entries_data_offset, ($atom_structure['sample_description_table'][$i]['size'] - 4 - 4 - 6 - 2));
$stsd_entries_data_offset += 16 + ($atom_structure['sample_description_table'][$i]['size'] - 4 - 4 - 6 - 2);
getid3_lib::ReadSequence('BigEndian2Int', $atom_structure['sample_description_table'][$i], $atom_structure['sample_description_table'][$i]['data'], 0,
array (
'encoder_version' => 2,
'encoder_revision' => 2,
'encoder_vendor' => -4
)
);
switch ($atom_structure['sample_description_table'][$i]['encoder_vendor']) {
case "\x00\x00\x00\x00":
// audio atom
getid3_lib::ReadSequence('BigEndian2Int', $atom_structure['sample_description_table'][$i], $atom_structure['sample_description_table'][$i]['data'], 8,
array (
'audio_channels' => 2,
'audio_bit_depth' => 2,
'audio_compression_id' => 2,
'audio_packet_size' => 2
)
);
$atom_structure['sample_description_table'][$i]['audio_sample_rate'] = getid3_quicktime::FixedPoint16_16(substr($atom_structure['sample_description_table'][$i]['data'], 16, 4));
switch ($atom_structure['sample_description_table'][$i]['data_format']) {
case 'mp4v':
$info['fileformat'] = 'mp4';
throw new getid3_exception('This version of getID3() does not fully support MPEG-4 audio/video streams');
case 'qtvr':
$info['video']['dataformat'] = 'quicktimevr';
break;
case 'mp4a':
default:
$info_quicktime['audio']['codec'] = $this->QuicktimeAudioCodecLookup($atom_structure['sample_description_table'][$i]['data_format']);
$info_quicktime['audio']['sample_rate'] = $atom_structure['sample_description_table'][$i]['audio_sample_rate'];
$info_quicktime['audio']['channels'] = $atom_structure['sample_description_table'][$i]['audio_channels'];
$info_quicktime['audio']['bit_depth'] = $atom_structure['sample_description_table'][$i]['audio_bit_depth'];
$info['audio']['codec'] = $info_quicktime['audio']['codec'];
$info['audio']['sample_rate'] = $info_quicktime['audio']['sample_rate'];
$info['audio']['channels'] = $info_quicktime['audio']['channels'];
$info['audio']['bits_per_sample'] = $info_quicktime['audio']['bit_depth'];
switch ($atom_structure['sample_description_table'][$i]['data_format']) {
case 'raw ': // PCM
case 'alac': // Apple Lossless Audio Codec
$info['audio']['lossless'] = true;
break;
default:
$info['audio']['lossless'] = false;
break;
}
break;
}
break;
default:
switch ($atom_structure['sample_description_table'][$i]['data_format']) {
case 'mp4s':
$info['fileformat'] = 'mp4';
break;
default:
// video atom
getid3_lib::ReadSequence('BigEndian2Int', $atom_structure['sample_description_table'][$i], $atom_structure['sample_description_table'][$i]['data'], 8,
array (
'video_temporal_quality' => 4,
'video_spatial_quality' => 4,
'video_frame_width' => 2,
'video_frame_height' => 2
)
);
$atom_structure['sample_description_table'][$i]['video_resolution_x'] = getid3_quicktime::FixedPoint16_16(substr($atom_structure['sample_description_table'][$i]['data'], 20, 4));
$atom_structure['sample_description_table'][$i]['video_resolution_y'] = getid3_quicktime::FixedPoint16_16(substr($atom_structure['sample_description_table'][$i]['data'], 24, 4));
getid3_lib::ReadSequence('BigEndian2Int', $atom_structure['sample_description_table'][$i], $atom_structure['sample_description_table'][$i]['data'], 28,
array (
'video_data_size' => 4,
'video_frame_count' => 2,
'video_encoder_name_len' => 1
)
);
$atom_structure['sample_description_table'][$i]['video_encoder_name'] = substr($atom_structure['sample_description_table'][$i]['data'], 35, $atom_structure['sample_description_table'][$i]['video_encoder_name_len']);
$atom_structure['sample_description_table'][$i]['video_pixel_color_depth'] = getid3_lib::BigEndian2Int(substr($atom_structure['sample_description_table'][$i]['data'], 66, 2));
$atom_structure['sample_description_table'][$i]['video_color_table_id'] = getid3_lib::BigEndian2Int(substr($atom_structure['sample_description_table'][$i]['data'], 68, 2));
$atom_structure['sample_description_table'][$i]['video_pixel_color_type'] = (($atom_structure['sample_description_table'][$i]['video_pixel_color_depth'] > 32) ? 'grayscale' : 'color');
$atom_structure['sample_description_table'][$i]['video_pixel_color_name'] = $this->QuicktimeColorNameLookup($atom_structure['sample_description_table'][$i]['video_pixel_color_depth']);
if ($atom_structure['sample_description_table'][$i]['video_pixel_color_name'] != 'invalid') {
$info_quicktime['video']['codec_fourcc'] = $atom_structure['sample_description_table'][$i]['data_format'];
$info_quicktime['video']['codec_fourcc_lookup'] = $this->QuicktimeVideoCodecLookup($atom_structure['sample_description_table'][$i]['data_format']);
$info_quicktime['video']['codec'] = $atom_structure['sample_description_table'][$i]['video_encoder_name'];
$info_quicktime['video']['color_depth'] = $atom_structure['sample_description_table'][$i]['video_pixel_color_depth'];
$info_quicktime['video']['color_depth_name'] = $atom_structure['sample_description_table'][$i]['video_pixel_color_name'];
$info['video']['codec'] = $info_quicktime['video']['codec'];
$info['video']['bits_per_sample'] = $info_quicktime['video']['color_depth'];
}
$info['video']['lossless'] = false;
$info['video']['pixel_aspect_ratio'] = (float)1;
break;
}
break;
}
switch (strtolower($atom_structure['sample_description_table'][$i]['data_format'])) {
case 'mp4a':
$info['audio']['dataformat'] = $info_quicktime['audio']['codec'] = 'mp4';
break;
case '3ivx':
case '3iv1':
case '3iv2':
$info['video']['dataformat'] = '3ivx';
break;
case 'xvid':
$info['video']['dataformat'] = 'xvid';
break;
case 'mp4v':
$info['video']['dataformat'] = 'mpeg4';
break;
case 'divx':
case 'div1':
case 'div2':
case 'div3':
case 'div4':
case 'div5':
case 'div6':
//$TDIVXileInfo['video']['dataformat'] = 'divx';
break;
default:
// do nothing
break;
}
unset($atom_structure['sample_description_table'][$i]['data']);
}
break;
case 'stts': // Sample Table Time-to-Sample atom
getid3_lib::ReadSequence('BigEndian2Int', $atom_structure, $atom_data, 0,
array (
'version' => 1,
'flags_raw' => 3, // hardcoded: 0x0000
'number_entries' => 4
)
);
$stts_entries_data_offset = 8;
$frame_rate_calculator_array = array ();
for ($i = 0; $i < $atom_structure['number_entries']; $i++) {
$atom_structure['time_to_sample_table'][$i]['sample_count'] = getid3_lib::BigEndian2Int(substr($atom_data, $stts_entries_data_offset, 4));
$stts_entries_data_offset += 4;
$atom_structure['time_to_sample_table'][$i]['sample_duration'] = getid3_lib::BigEndian2Int(substr($atom_data, $stts_entries_data_offset, 4));
$stts_entries_data_offset += 4;
if (!empty($info_quicktime['time_scale']) && (@$atoms_structure['time_to_sample_table'][$i]['sample_duration'] > 0)) {
$stts_new_framerate = $info_quicktime['time_scale'] / $atom_structure['time_to_sample_table'][$i]['sample_duration'];
if ($stts_new_framerate <= 60) {
// some atoms have durations of "1" giving a very large framerate, which probably is not right
$info['video']['frame_rate'] = max(@$info['video']['frame_rate'], $stts_new_framerate);
}
}
//@$frame_rate_calculator_array[($info_quicktime['time_scale'] / $atom_structure['time_to_sample_table'][$i]['sample_duration'])] += $atom_structure['time_to_sample_table'][$i]['sample_count'];
}
/*
$stts_frames_total = 0;
$stts_seconds_total = 0;
foreach ($frame_rate_calculator_array as $frames_per_second => $frame_count) {
if (($frames_per_second > 60) || ($frames_per_second < 1)) {
// not video FPS information, probably audio information
$stts_frames_total = 0;
$stts_seconds_total = 0;
break;
}
$stts_frames_total += $frame_count;
$stts_seconds_total += $frame_count / $frames_per_second;
}
if (($stts_frames_total > 0) && ($stts_seconds_total > 0)) {
if (($stts_frames_total / $stts_seconds_total) > @$info['video']['frame_rate']) {
$info['video']['frame_rate'] = $stts_frames_total / $stts_seconds_total;
}
}
*/
break;
case 'stss': // Sample Table Sync Sample (key frames) atom
/*
$atom_structure['version'] = getid3_lib::BigEndian2Int(substr($atom_data, 0, 1));
$atom_structure['flags_raw'] = getid3_lib::BigEndian2Int(substr($atom_data, 1, 3)); // hardcoded: 0x0000
$atom_structure['number_entries'] = getid3_lib::BigEndian2Int(substr($atom_data, 4, 4));
$stss_entries_data_offset = 8;
for ($i = 0; $i < $atom_structure['number_entries']; $i++) {
$atom_structure['time_to_sample_table'][$i] = getid3_lib::BigEndian2Int(substr($atom_data, $stss_entries_data_offset, 4));
$stss_entries_data_offset += 4;
}
*/
break;
case 'stsc': // Sample Table Sample-to-Chunk atom
/*
$atom_structure['version'] = getid3_lib::BigEndian2Int(substr($atom_data, 0, 1));
$atom_structure['flags_raw'] = getid3_lib::BigEndian2Int(substr($atom_data, 1, 3)); // hardcoded: 0x0000
$atom_structure['number_entries'] = getid3_lib::BigEndian2Int(substr($atom_data, 4, 4));
$stsc_entries_data_offset = 8;
for ($i = 0; $i < $atom_structure['number_entries']; $i++) {
$atom_structure['sample_to_chunk_table'][$i]['first_chunk'] = getid3_lib::BigEndian2Int(substr($atom_data, $stsc_entries_data_offset, 4));
$stsc_entries_data_offset += 4;
$atom_structure['sample_to_chunk_table'][$i]['samples_per_chunk'] = getid3_lib::BigEndian2Int(substr($atom_data, $stsc_entries_data_offset, 4));
$stsc_entries_data_offset += 4;
$atom_structure['sample_to_chunk_table'][$i]['sample_description'] = getid3_lib::BigEndian2Int(substr($atom_data, $stsc_entries_data_offset, 4));
$stsc_entries_data_offset += 4;
}
*/
break;
case 'stsz': // Sample Table SiZe atom
/*
$atom_structure['version'] = getid3_lib::BigEndian2Int(substr($atom_data, 0, 1));
$atom_structure['flags_raw'] = getid3_lib::BigEndian2Int(substr($atom_data, 1, 3)); // hardcoded: 0x0000
$atom_structure['sample_size'] = getid3_lib::BigEndian2Int(substr($atom_data, 4, 4));
$atom_structure['number_entries'] = getid3_lib::BigEndian2Int(substr($atom_data, 8, 4));
$stsz_entries_data_offset = 12;
if ($atom_structure['sample_size'] == 0) {
for ($i = 0; $i < $atom_structure['number_entries']; $i++) {
$atom_structure['sample_size_table'][$i] = getid3_lib::BigEndian2Int(substr($atom_data, $stsz_entries_data_offset, 4));
$stsz_entries_data_offset += 4;
}
}
*/
break;
case 'stco': // Sample Table Chunk Offset atom
/*
$atom_structure['version'] = getid3_lib::BigEndian2Int(substr($atom_data, 0, 1));
$atom_structure['flags_raw'] = getid3_lib::BigEndian2Int(substr($atom_data, 1, 3)); // hardcoded: 0x0000
$atom_structure['number_entries'] = getid3_lib::BigEndian2Int(substr($atom_data, 4, 4));
$stco_entries_data_offset = 8;
for ($i = 0; $i < $atom_structure['number_entries']; $i++) {
$atom_structure['chunk_offset_table'][$i] = getid3_lib::BigEndian2Int(substr($atom_data, $stco_entries_data_offset, 4));
$stco_entries_data_offset += 4;
}
*/
break;
case 'dref': // Data REFerence atom
getid3_lib::ReadSequence('BigEndian2Int', $atom_structure, $atom_data, 0,
array (
'version' => 1,
'flags_raw' => 3, // hardcoded: 0x0000
'number_entries' => 4
)
);
$dref_data_offset = 8;
for ($i = 0; $i < $atom_structure['number_entries']; $i++) {
getid3_lib::ReadSequence('BigEndian2Int', $atom_structure['data_references'][$i], $atom_data, $dref_data_offset,
array (
'size' => 4,
'type' => -4,
'version' => 1,
'flags_raw' => 3 // hardcoded: 0x0000
)
);
$dref_data_offset += 12;
$atom_structure['data_references'][$i]['data'] = substr($atom_data, $dref_data_offset, ($atom_structure['data_references'][$i]['size'] - 4 - 4 - 1 - 3));
$dref_data_offset += ($atom_structure['data_references'][$i]['size'] - 4 - 4 - 1 - 3);
$atom_structure['data_references'][$i]['flags']['self_reference'] = (bool)($atom_structure['data_references'][$i]['flags_raw'] & 0x001);
}
break;
case 'gmin': // base Media INformation atom
getid3_lib::ReadSequence('BigEndian2Int', $atom_structure, $atom_data, 0,
array (
'version' => 1,
'flags_raw' => 3, // hardcoded: 0x0000
'graphics_mode' => 2,
'opcolor_red' => 2,
'opcolor_green' => 2,
'opcolor_blue' => 2,
'balance' => 2,
'reserved' => 2
)
);
break;
case 'smhd': // Sound Media information HeaDer atom
getid3_lib::ReadSequence('BigEndian2Int', $atom_structure, $atom_data, 0,
array (
'version' => 1,
'flags_raw' => 3, // hardcoded: 0x0000
'balance' => 2,
'reserved' => 2
)
);
break;
case 'vmhd': // Video Media information HeaDer atom
getid3_lib::ReadSequence('BigEndian2Int', $atom_structure, $atom_data, 0,
array (
'version' => 1,
'flags_raw' => 3,
'graphics_mode' => 2,
'opcolor_red' => 2,
'opcolor_green' => 2,
'opcolor_blue' => 2
)
);
$atom_structure['flags']['no_lean_ahead'] = (bool)($atom_structure['flags_raw'] & 0x001);
break;
case 'hdlr': // HanDLeR reference atom
getid3_lib::ReadSequence('BigEndian2Int', $atom_structure, $atom_data, 0,
array (
'version' => 1,
'flags_raw' => 3, // hardcoded: 0x0000
'component_type' => -4,
'component_subtype' => -4,
'component_manufacturer' => -4,
'component_flags_raw' => 4,
'component_flags_mask' => 4
)
);
$atom_structure['component_name'] = substr(substr($atom_data, 24), 1); /// Pascal2String
if (($atom_structure['component_subtype'] == 'STpn') && ($atom_structure['component_manufacturer'] == 'zzzz')) {
$info['video']['dataformat'] = 'quicktimevr';
}
break;
case 'mdhd': // MeDia HeaDer atom
getid3_lib::ReadSequence('BigEndian2Int', $atom_structure, $atom_data, 0,
array (
'version' => 1,
'flags_raw' => 3, // hardcoded: 0x0000
'creation_time' => 4,
'modify_time' => 4,
'time_scale' => 4,
'duration' => 4,
'language_id' => 2,
'quality' => 2
)
);
if ($atom_structure['time_scale'] == 0) {
throw new getid3_exception('Corrupt Quicktime file: mdhd.time_scale == zero');
}
$info_quicktime['time_scale'] = max(@$info['quicktime']['time_scale'], $atom_structure['time_scale']);
$atom_structure['creation_time_unix'] = (int)($atom_structure['creation_time'] - 2082844800); // DateMac2Unix()
$atom_structure['modify_time_unix'] = (int)($atom_structure['modify_time'] - 2082844800); // DateMac2Unix()
$atom_structure['playtime_seconds'] = $atom_structure['duration'] / $atom_structure['time_scale'];
$atom_structure['language'] = $this->QuicktimeLanguageLookup($atom_structure['language_id']);
if (empty($info['comments']['language']) || (!in_array($atom_structure['language'], $info['comments']['language']))) {
$info['comments']['language'][] = $atom_structure['language'];
}
break;
case 'pnot': // Preview atom
getid3_lib::ReadSequence('BigEndian2Int', $atom_structure, $atom_data, 0,
array (
'modification_date' => 4, // "standard Macintosh format"
'version_number' => 2, // hardcoded: 0x00
'atom_type' => -4, // usually: 'PICT'
'atom_index' => 2 // usually: 0x01
)
);
$atom_structure['modification_date_unix'] = (int)($atom_structure['modification_date'] - 2082844800); // DateMac2Unix()
break;
case 'crgn': // Clipping ReGioN atom
$atom_structure['region_size'] = getid3_lib::BigEndian2Int(substr($atom_data, 0, 2)); // The Region size, Region boundary box,
$atom_structure['boundary_box'] = getid3_lib::BigEndian2Int(substr($atom_data, 2, 8)); // and Clipping region data fields
$atom_structure['clipping_data'] = substr($atom_data, 10); // constitute a QuickDraw region.
break;
case 'load': // track LOAD settings atom
getid3_lib::ReadSequence('BigEndian2Int', $atom_structure, $atom_data, 0,
array (
'preload_start_time' => 4,
'preload_duration' => 4,
'preload_flags_raw' => 4,
'default_hints_raw' => 4
)
);
$atom_structure['default_hints']['double_buffer'] = (bool)($atom_structure['default_hints_raw'] & 0x0020);
$atom_structure['default_hints']['high_quality'] = (bool)($atom_structure['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; $i < (strlen($atom_data) % 4); $i++) {
$atom_structure['track_id'][$i] = getid3_lib::BigEndian2Int(substr($atom_data, $i * 4, 4));
}
break;
case 'elst': // Edit LiST atom
getid3_lib::ReadSequence('BigEndian2Int', $atom_structure, $atom_data, 0,
array (
'version' => 1,
'flags_raw' => 3, // hardcoded: 0x0000
'number_entries' => 4
)
);
for ($i = 0; $i < $atom_structure['number_entries']; $i++ ) {
$atom_structure['edit_list'][$i]['track_duration'] = getid3_lib::BigEndian2Int(substr($atom_data, 8 + ($i * 12) + 0, 4));
$atom_structure['edit_list'][$i]['media_time'] = getid3_lib::BigEndian2Int(substr($atom_data, 8 + ($i * 12) + 4, 4));
$atom_structure['edit_list'][$i]['media_rate'] = getid3_quicktime::FixedPoint16_16(substr($atom_data, 8 + ($i * 12) + 8, 4));
}
break;
case 'kmat': // compressed MATte atom
$atom_structure['version'] = getid3_lib::BigEndian2Int(substr($atom_data, 0, 1));
$atom_structure['flags_raw'] = getid3_lib::BigEndian2Int(substr($atom_data, 1, 3)); // hardcoded: 0x0000
$atom_structure['matte_data_raw'] = substr($atom_data, 4);
break;
case 'ctab': // Color TABle atom
$atom_structure['color_table_seed'] = getid3_lib::BigEndian2Int(substr($atom_data, 0, 4)); // hardcoded: 0x00000000
$atom_structure['color_table_flags'] = getid3_lib::BigEndian2Int(substr($atom_data, 4, 2)); // hardcoded: 0x8000
$atom_structure['color_table_size'] = getid3_lib::BigEndian2Int(substr($atom_data, 6, 2)) + 1;
for ($colortableentry = 0; $colortableentry < $atom_structure['color_table_size']; $colortableentry++) {
$atom_structure['color_table'][$colortableentry]['alpha'] = getid3_lib::BigEndian2Int(substr($atom_data, 8 + ($colortableentry * 8) + 0, 2));
$atom_structure['color_table'][$colortableentry]['red'] = getid3_lib::BigEndian2Int(substr($atom_data, 8 + ($colortableentry * 8) + 2, 2));
$atom_structure['color_table'][$colortableentry]['green'] = getid3_lib::BigEndian2Int(substr($atom_data, 8 + ($colortableentry * 8) + 4, 2));
$atom_structure['color_table'][$colortableentry]['blue'] = getid3_lib::BigEndian2Int(substr($atom_data, 8 + ($colortableentry * 8) + 6, 2));
}
break;
case 'mvhd': // MoVie HeaDer atom
getid3_lib::ReadSequence('BigEndian2Int', $atom_structure, $atom_data, 0,
array (
'version' => 1,
'flags_raw' => 3,
'creation_time' => 4,
'modify_time' => 4,
'time_scale' => 4,
'duration' => 4
)
);
$atom_structure['preferred_rate'] = getid3_quicktime::FixedPoint16_16(substr($atom_data, 20, 4));
$atom_structure['preferred_volume'] = getid3_quicktime::FixedPoint8_8(substr($atom_data, 24, 2));
$atom_structure['reserved'] = substr($atom_data, 26, 10);
$atom_structure['matrix_a'] = getid3_quicktime::FixedPoint16_16(substr($atom_data, 36, 4));
$atom_structure['matrix_b'] = getid3_quicktime::FixedPoint16_16(substr($atom_data, 40, 4));
$atom_structure['matrix_u'] = getid3_quicktime::FixedPoint2_30(substr($atom_data, 44, 4));
$atom_structure['matrix_c'] = getid3_quicktime::FixedPoint16_16(substr($atom_data, 48, 4));
$atom_structure['matrix_d'] = getid3_quicktime::FixedPoint16_16(substr($atom_data, 52, 4));
$atom_structure['matrix_v'] = getid3_quicktime::FixedPoint2_30(substr($atom_data, 56, 4));
$atom_structure['matrix_x'] = getid3_quicktime::FixedPoint16_16(substr($atom_data, 60, 4));
$atom_structure['matrix_y'] = getid3_quicktime::FixedPoint16_16(substr($atom_data, 64, 4));
$atom_structure['matrix_w'] = getid3_quicktime::FixedPoint2_30(substr($atom_data, 68, 4));
getid3_lib::ReadSequence('BigEndian2Int', $atom_structure, $atom_data, 72,
array (
'preview_time' => 4,
'preview_duration' => 4,
'poster_time' => 4,
'selection_time' => 4,
'selection_duration' => 4,
'current_time' => 4,
'next_track_id' => 4
)
);
if ($atom_structure['time_scale'] == 0) {
throw new getid3_exception('Corrupt Quicktime file: mvhd.time_scale == zero');
}
$atom_structure['creation_time_unix'] = (int)($atom_structure['creation_time'] - 2082844800); // DateMac2Unix()
$atom_structure['modify_time_unix'] = (int)($atom_structure['modify_time'] - 2082844800); // DateMac2Unix()
$info_quicktime['time_scale'] = max(@$info['quicktime']['time_scale'], $atom_structure['time_scale']);
$info_quicktime['display_scale'] = $atom_structure['matrix_a'];
$info['playtime_seconds'] = $atom_structure['duration'] / $atom_structure['time_scale'];
break;
case 'tkhd': // TracK HeaDer atom
getid3_lib::ReadSequence('BigEndian2Int', $atom_structure, $atom_data, 0,
array (
'version' => 1,
'flags_raw' => 3,
'creation_time' => 4,
'modify_time' => 4,
'trackid' => 4,