59 lines
1.1 KiB
PHP
59 lines
1.1 KiB
PHP
<?php
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namespace App\Media\QuickTime\Atoms;
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use Illuminate\Support\Collection;
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use Leenooks\Traits\ObjectIssetFix;
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use App\Media\QuickTime\Atom;
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use App\Media\QuickTime\Atoms\moov\trak\tkhd;
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abstract class SubAtom extends Atom
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{
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use ObjectIssetFix;
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protected ?string $unused_data;
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protected const atom_record = [
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'version'=>['c',1],
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'flags'=>['a3',3],
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'count'=>['N',4],
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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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// Height is in the moov/trak/tkhd atom
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case 'height':
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// Width is in the moov/trak/tkhd atom
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case 'width':
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$atom = $this->find_atoms(tkhd::class,1);
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return $atom->{$key};
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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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* Unpack data into our cache
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*
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* @param string|null $data
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* @return Collection
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* @throws \Exception
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*/
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protected function cache(?string $data=NULL): Collection
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{
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$data = $data ?: $this->data();
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if (! count($this->cache) && $this->size) {
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$this->cache = collect(unpack($this->unpack(),$data));
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if ($this->size > ($x=$this->unpack_size()))
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$this->unused_data = substr($data,$x);
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}
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return $this->cache;
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}
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} |