Merge pull request #134 from cangelis/cropfilter

Add Crop Filter

src/FFMpeg/Filters/Video/CropFilter.php

@@ -0,0 +1,60 @@
+<?php
+/*
+ * This file is part of PHP-FFmpeg.
+ *
+ * (c) Alchemy <dev.team@alchemy.fr>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace FFMpeg\Filters\Video;
+
+use FFMpeg\Coordinate\Dimension;
+use FFMpeg\Coordinate\Point;
+use FFMpeg\Format\VideoInterface;
+use FFMpeg\Media\Video;
+
+class CropFilter implements VideoFilterInterface
+{
+    /** @var integer */
+    protected $priority;
+    /** @var Dimension */
+    protected $dimension;
+    /** @var Point */
+    protected $point;
+
+    public function __construct(Point $point, Dimension $dimension, $priority = 0)
+    {
+        $this->priority = $priority;
+        $this->dimension = $dimension;
+        $this->point = $point;
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function getPriority()
+    {
+        return $this->priority;
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function apply(Video $video, VideoInterface $format)
+    {
+        foreach ($video->getStreams()->videos() as $stream) {
+            if ($stream->has('width') && $stream->has('height')) {
+                $stream->set('width', $this->dimension->getWidth());
+                $stream->set('height', $this->dimension->getHeight());
+            }
+        }
+
+        return array(
+            '-filter:v',
+            'crop=' .
+            $this->dimension->getWidth() .':' . $this->dimension->getHeight() . ':' . $this->point->getX() . ':' . $this->point->getY()
+        );
+    }
+}

src/FFMpeg/Filters/Video/VideoFilters.php

@@ -11,6 +11,7 @@
 
 namespace FFMpeg\Filters\Video;
 
+use FFMpeg\Coordinate\Point;
 use FFMpeg\Media\Video;
 use FFMpeg\Coordinate\TimeCode;
 use FFMpeg\Coordinate\Dimension;
@@ -104,6 +105,21 @@ class VideoFilters extends AudioFilters
         return $this;
     }
 
+    /**
+     * Crops the video
+     *
+     * @param Point $point
+     * @param Dimension $dimension
+     *
+     * @return VideoFilters
+     */
+    public function crop(Point $point, Dimension $dimension)
+    {
+        $this->media->addFilter(new CropFilter($point, $dimension));
+
+        return $this;
+    }
+
     /**
      * @param string $imagePath
      * @param array  $coordinates

tests/FFMpeg/Tests/Filters/Video/CropFilterTest.php

@@ -0,0 +1,40 @@
+<?php
+
+namespace FFMpeg\Tests\Filters\Video;
+
+use FFMpeg\Coordinate\Dimension;
+use FFMpeg\Coordinate\Point;
+use FFMpeg\FFProbe\DataMapping\Stream;
+use FFMpeg\FFProbe\DataMapping\StreamCollection;
+use FFMpeg\Filters\Video\CropFilter;
+use FFMpeg\Tests\TestCase;
+
+class CropFilterTest extends TestCase
+{
+
+    public function testCommandParamsAreCorrectAndStreamIsUpdated()
+    {
+        $stream = new Stream(array('width' => 320, 'height' => 240, 'codec_type' => 'video'));
+        $streams = new StreamCollection(array($stream));
+
+        $video = $this->getVideoMock();
+        $video->expects($this->once())
+            ->method('getStreams')
+            ->will($this->returnValue($streams));
+
+        $format = $this->getMock('FFMpeg\Format\VideoInterface');
+
+        $dimension = new Dimension(200, 150);
+        $point = new Point(25, 35);
+        $filter = new CropFilter($point, $dimension);
+        $expected = array(
+            '-filter:v',
+            'crop=' . $dimension->getWidth() . ":" . $dimension->getHeight() . ":" . $point->getX() . ":" . $point->getY()
+        );
+        $this->assertEquals($expected, $filter->apply($video, $format));
+
+        $this->assertEquals(200, $stream->get('width'));
+        $this->assertEquals(150, $stream->get('height'));
+    }
+
+}