<?php
/**
* This file is part of the PHP Video Toolkit v2 package.
*
* @author Oliver Lillie (aka buggedcom) <publicmail@buggedcom.co.uk>
* @license Dual licensed under MIT and GPLv2
* @copyright Copyright (c) 2008-2014 Oliver Lillie <http://www.buggedcom.co.uk>
* @package PHPVideoToolkit V2
* @version 2.1.7-beta
* @uses ffmpeg http://ffmpeg.sourceforge.net/
*/
namespace PHPVideoToolkit;
use GifCreator;
/**
* This class provides an animated gif transcoder engine that uses pure PHP to create an animated gif. This is the
* weakest format of the three engines and should be avoided if possible.
*
* @author Oliver Lillie
*/
class AnimatedGifTranscoderPhp extends AnimatedGifTranscoderAbstract
{
/**
* Saves the animated gif.
*
* @access public
* @author Oliver Lillie
* @param string $save_path The path to save the animated gif to.
* @return PHPVideoToolkit\Image Returns a new instance of PHPVideoToolkit\Image with the new animated gif as the src.
* @throws PHPVideoToolkit\AnimatedGifException If an empty gif is generated.
* @throws PHPVideoToolkit\AnimatedGifException If the gif couldn't be saved to the filesystem.
*/
public function save($save_path)
{
$save_path = parent::save($save_path);
// build the gif creator process
require_once dirname(dirname(dirname(__FILE__))).'/vendor/sybio/gif-creator/src/GifCreator/GifCreator.php';
$gc = new \GifCreator\GifCreator();
// add in all the frames
$durations = array();
$frame_duration = $this->_frame_delay*100;
foreach ($this->_frames as $path)
{
array_push($durations, $frame_duration);
}
$gc->create($this->_frames, $durations, $this->_loop_count === AnimatedGif::UNLIMITED_LOOPS ? '0' : $this->_loop_count+1);
$gif_data = $gc->getGif();
// check for errors or put the data into the file.
if(empty($gif_data) === true)
{
throw new AnimatedGifException('AnimatedGif using `php` generated an empty gif.');
}
if(file_put_contents($save_path, $gif_data) === false)
{
throw new AnimatedGifException('AnimatedGif save to filesystem failed using "'.$save_path.'".');
}
return new Image($save_path, $this->_config);
}
/**
* Determines if the php transcoder engine is available on the current system.
*
* @access public
* @static
* @author Oliver Lillie
* @param PHPVideoToolkit\Config $config The configuration object.
* @return boolean Returns true if this engine can be used, otherwise false.
*/
public static function available(Config $config)
{
return function_exists('imagegif') && is_file(dirname(dirname(dirname(__FILE__))).'/vendor/sybio/gif-creator/src/GifCreator/GifCreator.php');
}
}
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