<?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;
/**
* @access public
* @author Oliver Lillie
* @package default
*/
class ProgressHandlerNative extends ProgressHandlerAbstract
{
protected $_progress_file;
protected $_input;
protected $_output;
public function __construct($callback=null, Config $config=null)
{
// check that the "-progress" function is available.
$parser = new FfmpegParser($config);
$available_commands = $parser->getCommands();
if(isset($available_commands['progress']) === false)
{
throw new Exception('Your version of FFmpeg cannot support the Native progress handler. Please use ProgressHandlerOutput instead.');
}
parent::__construct($callback, $config);
$this->_progress_file = null;
$this->_input = null;
$this->_output = null;
}
protected function _getRawData()
{
if(is_file($this->_progress_file) === false)
{
return '';
}
// there is a problem reading from the chunking file, so we must copy and then read, then delete the copy
// in order to succesfully read the data.
$copy = $this->_progress_file.'.'.time().'.txt';
copy($this->_progress_file, $copy);
$data = file_get_contents($copy);
@unlink($copy);
return $data;
}
protected function _parseOutputData(&$return_data, $raw_data)
{
$return_data['started'] = true;
$return_data['input_count'] = count($this->_input);
$return_data['input_file'] = $return_data['input_count'] === 1 ? $this->_input[0] : $this->_input;
$return_data['output_count'] = count($this->_output);
$return_data['output_file'] = $return_data['output_count'] === 1 ? $this->_output[0] : $this->_output;
if(empty($raw_data) === true)
{
if(empty($this->_last_probe_data) === true)
{
$return_data['status'] = self::ENCODING_STATUS_PENDING;
}
else
{
$return_data['percentage'] = 100;
$return_data['finished'] = true;
$return_data['status'] = self::ENCODING_STATUS_FINISHED;
}
return;
}
$return_data['status'] = self::ENCODING_STATUS_ENCODING;
$return_data['process_file'] = $this->_progress_file;
// parse out the details of the data into the seperate chunks.
$parts = preg_split('/frame=/', $raw_data);
array_shift($parts);
foreach ($parts as $key=>$part)
{
$data_parts = preg_split('/=|\r\n|\r|\n/', trim($part));
$data = array(
'frames' => $data_parts[0],
);
for($i=1, $l=count($data_parts)-1; $i<$l; $i+=2)
{
$data[$data_parts[$i]] = $data_parts[$i+1];
}
$parts[$key] = $data;
}
$ended = false;
if(empty($parts) === false)
{
$last_key = count($parts)-1;
$return_data['frame'] = $parts[$last_key]['frames'];
$return_data['fps'] = $parts[$last_key]['fps'];
$return_data['size'] = $parts[$last_key]['total_size'];
$return_data['duration'] = new Timecode($parts[$last_key]['out_time'], Timecode::INPUT_FORMAT_TIMECODE);
$return_data['percentage'] = ($return_data['duration']->total_seconds/$this->_total_duration->total_seconds)*100;
$return_data['dup'] = $parts[$last_key]['dup_frames'];
$return_data['drop'] = $parts[$last_key]['drop_frames'];
if($parts[$last_key]['progress'] === 'end')
{
$ended = true;
$return_data['finished'] = true;
if($return_data['percentage'] < 99.5)
{
$return_data['interrupted'] = true;
$return_data['status'] = self::ENCODING_STATUS_INTERRUPTED;
}
else
{
$return_data['percentage'] = 100;
}
}
// work out the fps average for performance reasons
if(count($parts) === 1)
{
$return_data['fps_avg'] = $return_data['frame']/$return_data['run_time'];
}
else
{
$total_fps = 0;
foreach ($parts as $part)
{
$total_fps += $part['fps'];
}
$return_data['fps_avg'] = $total_fps/($last_key+1);
}
}
if($ended === true)
{
$this->_deleteProgressFile();
$return_data['finished'] = true;
if($return_data['status'] !== self::ENCODING_STATUS_INTERRUPTED)
{
$return_data['completed'] = true;
$return_data['status'] = self::ENCODING_STATUS_FINISHED;
}
}
else if($return_data['percentage'] === 100)
{
$return_data['completed'] = true;
$return_data['status'] = self::ENCODING_STATUS_COMPLETED;
}
else if($return_data['percentage'] >= 99.5)
{
$return_data['percentage'] = 100;
$return_data['status'] = self::ENCODING_STATUS_FINALISING;
}
$this->_last_probe_data = $return_data;
}
protected function _deleteProgressFile()
{
@unlink($this->_progress_file);
}
public function attachFfmpegProcess(FfmpegProcess $process, Config $config=null)
{
parent::attachFfmpegProcess($process, $config);
$this->_progress_file = tempnam($this->_config->temp_directory, 'phpvideotoolkit_progress_'.time().'_');
$this->_input = $this->_ffmpeg_process->getAllInput();
$this->_output = $this->_ffmpeg_process->getAllOutput();
$this->_ffmpeg_process->addCommand('-progress', $this->_progress_file);
}
}
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