added getRotation() and test

FFmpegMovie.php

@@ -31,6 +31,7 @@ class FFmpegMovie implements Serializable {
     protected static $REGEX_HAS_AUDIO           = '/Stream.+Audio/';
     protected static $REGEX_HAS_VIDEO           = '/Stream.+Video/';
     protected static $REGEX_ERRORS              = '/.*(Error|Permission denied|could not seek to position|Invalid pixel format|Unknown encoder|could not find codec|does not contain any stream).*/i';
+    protected static $REGEX_ROTATION             = '/rotate\s*[:=]\s*(-?[0-9]+)/';
 
     /**
      * FFmpeg binary
@@ -132,6 +133,12 @@ class FFmpegMovie implements Serializable {
     */
     protected $frameWidth;
     /**
+  	* Movie rotiation
+    *
+    * @var int
+    */
+    protected $rotation;
+	/**
     * Movie pixel format
     * 
     * @var string
@@ -445,7 +452,23 @@ public function getFrameWidth() {
 
         return $this->frameWidth;
     }
-
+
+    /**
+     * Return the rotation angle of the video file
+     *
+     * @return into
+     */
+    public function getRotation()
+    {
+        if ($this->rotation === null) {
+            $match = array();
+            preg_match(self::$REGEX_ROTATION, $this->output, $match);
+            $this->rotation = (array_key_exists(1, $match)) ? intval(trim($match[1])) : 0;
+        }
+
+        return $this->rotation;
+    }
+
     /**
     * Return the pixel format of the movie.
     *

test/FFmpegMovieTest.php

@@ -152,6 +152,11 @@ public function testGetFrameWidth() {
         $this->assertEquals(640, $this->movie->getFrameWidth(), 'Frame width should be int(640)');
     }   
 
+	public function ttetGetRotation() {
+		$this->assertInternalType('int', $this->movie->getRotation(), 'Frame rotation is of integer type');
+		$this->assertEquals(0, $this->movie->getRotation(), 'Frame roation should be int(0)');
+	}
+
     public function testGetPixelFormat() {
         $this->assertInternalType('string', $this->movie->getPixelFormat(), 'Pixel format is of string type');
         $this->assertEquals('yuv420p', $this->movie->getPixelFormat(), 'Pixel format should be string(yuv420p)');
@@ -273,4 +278,4 @@ public function testSerializeUnserialize() {
         $this->assertInternalType('float', $this->movie->getDuration(), 'Duration is of float type');
         $this->assertEquals(32.14, $this->movie->getDuration(), 'Duration should be float(32.14)');
     }
-}
+}