Added AVI x-msvideo parsing

app/Media/MSVideo/Containers/rlist/strh.php

@@ -0,0 +1,61 @@
+<?php
+
+namespace App\Media\MSVideo\Containers\rlist;
+
+// https://cdn.hackaday.io/files/274271173436768/avi.pdf
+
+use Illuminate\Support\Arr;
+
+use App\Media\MSVideo\Container;
+
+class strh extends Container
+{
+	protected const unpack = [
+		'type'=>['a4',4],		// FCC type
+		'handler'=>['a4',4],	// FourCC of codec to be used
+		'flags'=>['a4',4],
+		'priority'=>['v',2],
+		'language'=>['v',2],
+		'init_frames'=>['V',4],	// Number of the First block of the stream that is present in the file.
+		'scale'=>['V',4],
+		'rate'=>['V',4],
+		'start'=>['V',4],		// Start time of stream.
+		'length'=>['V',4],		// Size of stream in units as defined in dwRate and dwScale
+		'buffer_size'=>['V',4],	// Size of Buffer necessary to store blocks of that stream. Can be 0 (in that case the application has to guess)
+		'quality'=>['V',4],
+		'sample_size'=>['V',4],	// number of bytes of one stream atom
+		'frame'=>['V',4],
+	];
+
+	public function __construct(int $offset,int $size,string $filename,bool $be,?string $data)
+	{
+		parent::__construct($offset,$size,$filename,$be,$data);
+
+		$this->cache = $this->cache($data);
+
+		$this->type = Arr::get($this->cache,'type');
+
+		// For debugging
+		if (FALSE)
+			$this->debug = hex_dump($data ?: $this->data());
+	}
+
+	public function __get(string $key): mixed
+	{
+		switch ($key) {
+			case 'audio_samplerate':
+			case 'video_framerate':
+				return Arr::get($this->cache,'rate') / Arr::get($this->cache,'scale',1);
+
+			case 'audio_codec':
+			case 'video_codec':
+				return Arr::get($this->cache,'handler');
+
+			case 'duration':
+				return Arr::get($this->cache,'length');
+
+			default:
+				return parent::__get($key);
+		}
+	}
+}