Add Audio and Video interfaces

src/FFMpeg/Format/DefaultAudioFormat.php

@@ -0,0 +1,64 @@
+<?php
+
+namespace FFMpeg\Format;
+
+abstract class DefaultAudioFormat implements AudioFormat
+{
+
+    protected $audioCodec;
+    protected $audioSampleRate = 44100;
+    protected $kiloBitrate     = 1000;
+
+    public function getExtraParams()
+    {
+        return '';
+    }
+
+    public function getAudioCodec()
+    {
+        return $this->audioCodec;
+    }
+
+    public function setAudioCodec($audioCodec)
+    {
+        if ( ! in_array($audioCodec, $this->getAvailableAudioCodecs()))
+        {
+            throw new \InvalidArgumentException('Wrong audiocodec value');
+        }
+
+        $this->audioCodec = $audioCodec;
+    }
+
+    public function getAudioSampleRate()
+    {
+        return $this->audioSampleRate;
+    }
+
+    public function setAudioSampleRate($audioSampleRate)
+    {
+        if ($audioSampleRate < 1)
+        {
+            throw new \InvalidArgumentException('Wrong audio sample rate value');
+        }
+
+        $this->audioSampleRate = (int) $audioSampleRate;
+    }
+
+    public function getKiloBitrate()
+    {
+        return $this->kiloBitrate;
+    }
+
+    public function setKiloBitrate($kiloBitrate)
+    {
+        if ($kiloBitrate < 1)
+        {
+            throw new \InvalidArgumentException('Wrong kiloBitrate value');
+        }
+
+        $this->kiloBitrate = (int) $kiloBitrate;
+    }
+
+    abstract protected function getAvailableAudioCodecs();
+
+}