Add FrameFilters::fixDisplayRatio method

src/FFMpeg/Filters/Frame/FrameFilters.php

@@ -21,4 +21,19 @@ class FrameFilters
     {
         $this->frame = $frame;
     }
+
+    /**
+     * Fixes the display ratio of the output frame.
+     * 
+     * In case the sample ratio and display ratio are different, image may be
+     * anamorphozed. This filter fixes this by specifying the output size.
+     * 
+     * @return FrameFilters
+     */
+    public function fixDisplayRatio()
+    {
+        $this->frame->addFilter(new DisplayRatioFixerFilter());
+
+        return $this;
+    }
 }

tests/FFMpeg/Tests/Filters/Frame/FrameFiltersTest.php

@@ -0,0 +1,21 @@
+<?php
+
+namespace FFMpeg\Tests\Filters\Frame;
+
+use FFMpeg\Tests\TestCase;
+use FFMpeg\Filters\Frame\FrameFilters;
+
+class FrameFiltersTest extends TestCase
+{
+    public function testResize()
+    {
+        $frame = $this->getFrameMock();
+        $filters = new FrameFilters($frame);
+
+        $frame->expects($this->once())
+            ->method('addFilter')
+            ->with($this->isInstanceOf('FFMpeg\Filters\Frame\DisplayRatioFixerFilter'));
+
+        $filters->fixDisplayRatio();
+    }
+}

tests/FFMpeg/Tests/TestCase.php

@@ -40,6 +40,13 @@ class TestCase extends \PHPUnit_Framework_TestCase
             ->getMock();
     }
 
+    public function getFrameMock()
+    {
+        return $this->getMockBuilder('FFMpeg\Media\Frame')
+            ->disableOriginalConstructor()
+            ->getMock();
+    }
+
     public function getFFMpegDriverMock()
     {
         return $this->getMockBuilder('FFMpeg\Driver\FFMpegDriver')
@@ -129,7 +136,7 @@ class TestCase extends \PHPUnit_Framework_TestCase
             ->getMock();
 
         $video->expects($this->any())
-            ->method('getFilename')
+            ->method('getPathfile')
             ->will($this->returnValue($filename));
 
         return $video;