/phpvideotoolkit/adapters/ffmpeg-php/ffmpeg_animated_gif.php
PHP | 243 lines | 100 code | 9 blank | 134 comment | 13 complexity | d3c5e76d0b9564ad3143ca5d2b6957c3 MD5 | raw file
Possible License(s): GPL-2.0
- <?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 L?szl? 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 L?szl? 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;
- }
-
- }