Initila Import

src/FFMpeg/Format/DefaultFormat.php

@@ -0,0 +1,174 @@
+<?php
+
+namespace FFMpeg\Format;
+
+abstract class DefaultFormat implements Format
+{
+
+    protected $width;
+    protected $height;
+    protected $frameRate       = 25;
+    protected $audioCodec;
+    protected $audioSampleRate = 44100;
+    protected $videoCodec;
+    protected $kiloBitrate     = 1000;
+    protected $GOPsize         = 25;
+
+    public function __construct($width, $height)
+    {
+        $this->setDimensions($width, $height);
+    }
+
+    public function getExtraParams()
+    {
+
+    }
+
+    public function getWidth()
+    {
+        return $this->width;
+    }
+
+    public function getHeight()
+    {
+        return $this->height;
+    }
+
+    public function setDimensions($width, $height)
+    {
+        if ($width < 1)
+        {
+            throw new \InvalidArgumentException('Wrong width value');
+        }
+        if ($height < 1)
+        {
+            throw new \InvalidArgumentException('Wrong height value');
+        }
+
+        $this->width = $this->getMultiple($width, 16);
+        $this->height = $this->getMultiple($height, 16);
+
+        return;
+    }
+
+    public function getFrameRate()
+    {
+        return $this->frameRate;
+    }
+
+    public function setFrameRate($frameRate)
+    {
+        if ($frameRate < 1)
+        {
+            throw new \InvalidArgumentException('Wrong framerate value');
+        }
+
+        $this->frameRate = (int) $frameRate;
+    }
+
+    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 getVideoCodec()
+    {
+        return $this->videoCodec;
+    }
+
+    public function setVideoCodec($videoCodec)
+    {
+        if ( ! in_array($videoCodec, $this->getAvailableVideoCodecs()))
+        {
+            throw new \InvalidArgumentException('Wrong videocodec value');
+        }
+
+        $this->videoCodec = $videoCodec;
+    }
+
+    public function getKiloBitrate()
+    {
+        return $this->kiloBitrate;
+    }
+
+    public function setKiloBitrate($kiloBitrate)
+    {
+        if ($kiloBitrate < 1)
+        {
+            throw new \InvalidArgumentException('Wrong kiloBitrate value');
+        }
+
+        $this->kiloBitrate = (int) $kiloBitrate;
+    }
+
+    public function getGOPsize()
+    {
+        return $this->GOPsize;
+    }
+
+    public function setGOPsize($GOPsize)
+    {
+        $this->GOPsize = (int) $GOPsize;
+    }
+
+    protected function getMultiple($value, $multiple)
+    {
+        $modulo = $value % $multiple;
+
+        $ret = (int) $multiple;
+
+        $halfDistance = $multiple / 2;
+        if ($modulo <= $halfDistance)
+            $bound        = 'bottom';
+        else
+            $bound        = 'top';
+
+        switch ($bound)
+        {
+            default:
+            case 'top':
+                $ret = $value + $multiple - $modulo;
+                break;
+            case 'bottom':
+                $ret = $value - $modulo;
+                break;
+        }
+
+        if ($ret < $multiple)
+        {
+            $ret = (int) $multiple;
+        }
+
+        return (int) $ret;
+    }
+
+    abstract protected function getAvailableAudioCodecs();
+
+    abstract protected function getAvailableVideoCodecs();
+
+}