add FFmpeg conversion

src/Definitions/MediaConversionFFmpeg.php

@@ -0,0 +1,89 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Elegantly\Media\Definitions;
+
+use Closure;
+use Elegantly\Media\Enums\MediaType;
+use Elegantly\Media\Models\Media;
+use Elegantly\Media\Models\MediaConversion;
+use Illuminate\Contracts\Filesystem\Filesystem;
+use ProtoneMedia\LaravelFFMpeg\Exporters\MediaExporter;
+use ProtoneMedia\LaravelFFMpeg\Support\FFMpeg;
+use Spatie\TemporaryDirectory\TemporaryDirectory as SpatieTemporaryDirectory;
+
+class MediaConversionFFmpeg extends MediaConversionDefinition
+{
+    /**
+     * @param  Closure(MediaExporter $ffmpeg):void  $manipulate
+     * @param  Closure(Media $media, ?MediaConversion $parent):string  $fileName
+     */
+    public function __construct(
+        public string $name,
+        public Closure $manipulate,
+        public Closure $fileName,
+        public null|bool|Closure $when = null,
+        public ?Closure $onCompleted = null,
+        public bool $immediate = true,
+        public bool $queued = true,
+        public ?string $queue = null,
+        public array $conversions = [],
+    ) {
+
+        parent::__construct(
+            name: $name,
+            handle: fn () => null,
+            when: $when,
+            onCompleted: $onCompleted,
+            immediate: $immediate,
+            queued: $queued,
+            queue: $queue,
+            conversions: $conversions
+        );
+    }
+
+    public function shouldExecute(Media $media, ?MediaConversion $parent): bool
+    {
+        if ($this->when !== null) {
+            return parent::shouldExecute($media, $parent);
+        }
+
+        $source = $parent ?? $media;
+
+        return in_array($source->type, [MediaType::Video, MediaType::Audio]);
+    }
+
+    public function handle(
+        Media $media,
+        ?MediaConversion $parent,
+        ?string $file,
+        Filesystem $filesystem,
+        SpatieTemporaryDirectory $temporaryDirectory
+    ): ?MediaConversion {
+
+        if (! $file) {
+            return null;
+        }
+
+        $fileName = $this->fileName;
+        $manipulate = $this->manipulate;
+
+        $newFile = $fileName($media, $parent);
+
+        $ffmpeg = FFMpeg::fromFilesystem($filesystem)
+            ->open($file)
+            ->export();
+
+        $manipulate($ffmpeg);
+
+        $ffmpeg->save($newFile);
+
+        return $media->addConversion(
+            file: $filesystem->path($newFile),
+            conversionName: $this->name,
+            parent: $parent,
+        );
+
+    }
+}