126 lines
2.9 KiB
PHP
126 lines
2.9 KiB
PHP
<?php
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namespace App\Media;
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use Illuminate\Support\Collection;
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use App\Media\QuickTime\Atoms\{mdat,moov,Unknown};
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use App\Traits\FindQuicktimeAtoms;
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// https://developer.apple.com/documentation/quicktime-file-format/quicktime_movie_files
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class QuickTime extends Base {
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use FindQuicktimeAtoms;
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private const LOGKEY = 'MFQ';
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private Collection $atoms;
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private const atom_classes = 'App\\Media\\QuickTime\\Atoms\\';
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public function __construct(string $filename,string $type)
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{
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parent::__construct($filename,$type);
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// Parse the atoms
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$this->atoms = $this->get_atoms(self::atom_classes,Unknown::class,0,$this->filesize);
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}
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public function __get(string $key): mixed
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{
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switch ($key) {
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case 'audio_channels':
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case 'audio_codec':
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case 'audio_samplerate':
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return $this->getAudioAtoms()
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->map(fn($item)=>$item->find_atoms(moov\trak\mdia\minf\stbl\stsd::class,1))
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->flatten()
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->map(fn($item)=>$item->{$key})
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->join(',');
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// Signatures are calculated by the sha of the MDAT atom.
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case 'signature':
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$atom = $this->find_atoms(mdat::class,1);
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return $atom->signature;
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// Creation Time is in the MOOV/MVHD atom
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case 'creation_date':
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case 'duration':
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case 'preferred_rate':
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case 'preferred_volume':
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// Height/Width is in the moov/trak/tkhd attom
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case 'height':
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case 'width':
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$atom = $this->find_atoms(moov::class,1);
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return $atom->{$key};
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case 'gps_altitude':
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case 'gps_lat':
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case 'gps_lon':
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$atom = $this->find_atoms(moov::class,1)
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->find_atoms(moov\meta::class,1);
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return $atom->{$key};
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case 'make':
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case 'model':
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case 'software':
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return $this->find_atoms(moov\meta::class,1)->{$key};
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case 'time_scale':
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$atom = $this->find_atoms(moov\mvhd::class,1);
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return $atom->{$key};
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case 'type':
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return parent::__get($key);
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case 'video_codec':
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return $this->getVideoAtoms()
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->map(fn($item)=>$item->find_atoms(moov\trak\mdia\minf\stbl\stsd::class,1))
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->flatten()
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->map(fn($item)=>$item->{$key})
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->join(',');
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case 'video_framerate':
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$atom = $this->getVideoAtoms()
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->map(fn($item)=>$item->find_atoms(moov\trak\mdia\minf\stbl\stts::class,1))
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->pop();
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return $atom->frame_rate($this->time_scale);
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default:
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throw new \Exception('Unknown key: '.$key);
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}
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}
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/**
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* Find all the audio track atoms
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*
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* Audio atoms are in moov/trak/mdia/minf
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*
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* @return Collection
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* @throws \Exception
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*/
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public function getAudioAtoms(): Collection
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{
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return $this->find_atoms(moov\trak\mdia\minf::class)
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->filter(fn($item)=>$item->type==='soun');
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}
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/**
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* Find all the video track atoms
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*
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* Audio atoms are in moov/trak/mdia/minf
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*
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* @return Collection
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* @throws \Exception
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*/
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public function getVideoAtoms(): Collection
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{
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return $this->find_atoms(moov\trak\mdia\minf::class)
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->filter(fn($item)=>$item->type==='vide');
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}
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} |