diff options
Diffstat (limited to 'libraries/phpvideotoolkit/adapters/ffmpeg-php/ffmpeg_animated_gif.php')
| -rw-r--r-- | libraries/phpvideotoolkit/adapters/ffmpeg-php/ffmpeg_animated_gif.php | 243 |
1 files changed, 243 insertions, 0 deletions
diff --git a/libraries/phpvideotoolkit/adapters/ffmpeg-php/ffmpeg_animated_gif.php b/libraries/phpvideotoolkit/adapters/ffmpeg-php/ffmpeg_animated_gif.php new file mode 100644 index 0000000..da4808a --- /dev/null +++ b/libraries/phpvideotoolkit/adapters/ffmpeg-php/ffmpeg_animated_gif.php @@ -0,0 +1,243 @@ +<?php + + /** + * This is a pure php emulation of the PHP module FFmpeg-PHP. + * There is one extra function here. ffmpeg_animated_gif::saveNow(); + * @author Oliver Lillie (aka buggedcom) <publicmail@buggedcom.co.uk> + * @package PHPVideoToolkit + * @license BSD + * @copyright Copyright (c) 2008 Oliver Lillie <http://www.buggedcom.co.uk> + * Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation + * files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, + * modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software + * is furnished to do so, subject to the following conditions: The above copyright notice and this permission notice shall be + * included in all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE + * WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR + * COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, + * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. + * @uses GifEncoder + * - @link http://www.phpclasses.org/browse/package/3163.html + * - @link http://phpclasses.gifs.hu/show.php?src=GIFEncoder.class.php + * - @author László Zsidi + * - @license Freeware. + * @see ffmpeg-php, + * - @link http://ffmpeg-php.sourceforge.net/ + * - @author Todd Kirby. + * - all phpdoc documentation is lifted directly from the ffmpeg-php docs + */ + + if(!defined('DS')) + { + define('DS', DIRECTORY_SEPARATOR); + } + + class ffmpeg_animated_gif + { + + private $_frames = array(); + private $_width = null; + private $_height = null; + private $_frame_rate = null; + private $_loop_count = null; + private $_output_file_path = null; + private $_toolkit_class = null; + private $_unlink_files = array(); + private $_saved = false; + + /** + * Class Constructor + * Create a new ffmpeg_animated_gif object. + * @param resource $output_file_path Location in the filesystem where the animated gif will be written. + * @param resource $width Width of the animated gif. + * @param resource $height Height of the animated gif. + * @param resource $frame_rate Frame rate of the animated gif in frames per second. + * @param resource $loop_count Number of times to loop the animation. Put a zero here to loop forever or omit this parameter to disable looping. + */ + function __construct($output_file_path, $width, $height, $frame_rate, $loop_count=false) + { + $this->_output_file_path = $output_file_path; + $this->_width = $width; + $this->_height = $height; + $this->_frame_rate = $frame_rate; + $this->_loop_count = $loop_count; + } + + /** + * Class Destructor + * saves the file + */ + function __destruct() + { +// save the output + $this->saveNow(); +// destroy all image resources + if(count($this->_frames)) + { + foreach($this->_frames as $key=>$frame) + { + imagedestroy($frame->toGDImage()); + } + } +// loop through the temp files to remove + if(!empty($this->_unlink_files)) + { + foreach ($this->_unlink_files as $key=>$file) + { + @unlink($file); + } + $this->_unlink_files = array(); + } + } + + /** + * This function IS NOT PROVIDED IN FFMPEG-PHP as it creates the gif as frames are added. to save memory in + * php and practicality purposes this isn't really possible. It will overwrite any file. + * @access public + * @uses GifEncoder + * - @link http://www.phpclasses.org/browse/package/3163.html + * - @link http://phpclasses.gifs.hu/show.php?src=GIFEncoder.class.php + * - @author László Zsidi + * - @license Freeware. + * @param string $tmp_directory The temp directory to work with. (remember the trailing slash) + * @return boolean + */ + public function saveNow($tmp_directory='/tmp/') + { + if($this->_saved === false) + { + $this->_saved = true; +// check there are frames to make a gif + if(!count($this->_frames)) + { + return false; + } + if(!class_exists('GIFEncoder')) + { + require_once dirname(__FILE__).DS.'gifencoder'.DS.'GIFEncoder.class.phpvideotoolkit.php'; + } +// save all the images from the ffmpeg_frames + $files = array(); + $delays = array(); + $delay = (1/$this->_frame_rate)*100; + foreach($this->_frames as $key=>$frame) + { + $file = $tmp_directory.'fag-'.uniqid(time().'-').'.gif'; + if(!imagegif($frame->toGDImage(), $file)) + { + return false; + } +// add file to array so it out deletes on close + array_push($this->_unlink_files, $file); + array_push($files, $file); + array_push($delays, $delay); + } +// convert the images + $gif = new GIFEncoder($files, $delays, $this->_loop_count, 2, 0, 0, 0, 0, 'url'); + $gif_data = $gif->GetAnimation(); + if(!$gif_data) + { + return false; + } +// write the gif + if (!$handle = fopen($this->_output_file_path, 'w')) + { + return false; + } + if (fwrite($handle, $gif_data) === false) + { + return false; + } + fclose($handle); + return true; + } + return false; + } +// NOTE this provides a way to do it through pure PHPVideoToolkit class, however when ffmpeg creates animated gifs it uses a +// limited colour palette for some stupid reason so the gifs created look rubbish. +// public function saveNow($tmp_directory='/tmp/') +// { +// if($this->_saved === false) +// { +// $this->_saved = true; +// // check there are frames to make a gif +// if(!count($this->_frames)) +// { +// return false; +// } +// if($this->_toolkit !== null) +// { +// $this->_toolkit->reset(); +// } +// else +// { +// // get the ffmpeg class +// require_once dirname(dirname(dirname(__FILE__))).DS.'phpvideotoolkit.php5.php'; +// $this->_toolkit = new PHPVideoToolkit($tmp_directory); +// } +// // save all the images from the ffmpeg_frames +// $files = array(); +// foreach($this->_frames as $key=>$frame) +// { +// $file = $tmp_directory.'fag-'.$this->_toolkit->unique().'.jpg'; +// if(!imagejpeg($frame->toGDImage(), $file, 80)) +// { +// return false; +// } +// // add file to array so it out deletes on close +// array_push($this->_unlink_files, $file); +// array_push($files, $file); +// } +// // print_r($files); +// // prepare these images for conversion into a movie/gif +// $result = $this->_toolkit->prepareImagesForConversionToVideo($files); +// if(!$result) +// { +// return false; +// } +// // set the width and height +// $this->_toolkit->setVideoOutputDimensions($this->_width, $this->_height); +// // set the frame rate +// $this->_toolkit->addCommand('-inputr', $this->_frame_rate); +// // set the looping +// $this->_toolkit->setGifLoops($this->_loop_count); +// // set the output parameters +// $output_path_info = pathinfo($this->_output_file_path); +// $result = $this->_toolkit->setOutput($output_path_info['dirname'].'/', $output_path_info['basename'], PHPVideoToolkit::OVERWRITE_EXISTING); +// if(!$result) +// { +// return false; +// } +// // execute the ffmpeg command +// $result = $this->_toolkit->execute(); +// print_r($this->_toolkit->getLastCommand()); +// if(!$result) +// { +// return false; +// } +// return true; +// } +// return false; +// } + + /** + * Add a frame to the end of the animated gif. + * @access public + * @param resource $output_file_path The ffmpeg_frame object to add to the end of the animated gif. + * @param boolean $save If true the gif will save after the frame has been added. + * NOTE: this param does not feature in the actuall ffmpeg-php module. + * @return boolean + */ + public function addFrame($frame_to_add, $save=false) + { + if(get_class($frame_to_add) == 'ffmpeg_frame' && $frame_to_add->hasValidResource()) + { + array_push($this->_frames, $frame_to_add); + $this->_saved = false; + return $save === true ? $this->saveNow() : true; + } + return false; + } + + }
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