<?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 2.1.1
* @uses ffmpeg http://ffmpeg.sourceforge.net/
*/
namespace PHPVideoToolkit;
/**
* @access public
* @author Oliver Lillie
* @package default
*/
class ProgressHandlerPortable extends ProgressHandlerDefaultData
{
protected $_config;
protected $_callback;
protected $_total_duration;
protected $_process_id;
protected $_temp_id;
protected $_boundary;
protected $_time_started;
private $_wait_on_next_probe;
public $completed;
public function __construct($process_id, Config $config=null, $callback=null)
{
if($callback !== null && is_callable($callback) === false)
{
throw new Exception('The progress handler callback is not callable.');
}
$this->_config = $config === null ? Config::getInstance() : $config;
if(empty($process_id) === true)
{
throw new Exception('The process id must not be empty.');
}
$this->_process_id = $process_id;
list($temp_id, $boundary, $time_started) = explode('.', $this->_process_id);
$this->_temp_id = $temp_id;
$this->_boundary = $boundary;
$this->_time_started = $time_started;
$this->_output = $this->_config->temp_directory.'/phpvideotoolkit_'.$temp_id;
if(is_file($this->_output) === false)
{
throw new Exception('The process output file cannot be found. Please make sure that another process has not garbage collected the file.');
}
$this->completed = null;
$this->_callback = $callback;
$this->_total_duration = 0;
$this->_ffmpeg_process = null;
$this->_wait_on_next_probe = false;
}
public function probe($probe_then_wait=false, $seconds=1)
{
if($this->_wait_on_next_probe === true)
{
if(is_int($seconds) === false)
{
throw new Exception('$seconds must be an integer.');
}
else if($seconds <= 0)
{
throw new Exception('$seconds must be an integer greater than 0.');
}
usleep($seconds*100000);
}
$this->_wait_on_next_probe = $probe_then_wait;
return $this->_processOutputFile();
}
protected function _processOutputFile()
{
// setup the data to return.
$return_data = $this->_getDefaultData();
// load up the data
$completed = false;
$raw_data = $this->_getRawData();
if(empty($raw_data) === false)
{
// parse the raw data into the return data
$this->_parseOutputData($return_data, $raw_data);
// check to see if the process has completed
if($return_data['percentage'] >= 100)
{
$return_data['percentage'] = 100;
$return_data['run_time'] = filemtime($this->_output)-$this->_time_started;
}
// or if it has been interuptted
else if($return_data['interrupted'] === true)
{
$return_data['run_time'] = filemtime($this->_output)-$this->_time_started;
}
else
{
$return_data['run_time'] = time()-$this->_time_started;
}
}
// check for any errors encountered by the parser
$this->_checkOutputForErrorsFailureOrSuccess($raw_data, $return_data);
// has the process completed itself?
$this->completed = $return_data['completed'];
return $return_data;
}
protected function _checkOutputForErrorsFailureOrSuccess($raw_data, &$return_data)
{
$failure_boundary = '<f-'.$this->_boundary.'>';
$completion_boundary = '<c-'.$this->_boundary.'>';
$error_code_boundary = '<e-'.$this->_boundary.'>';
if(strpos($raw_data, $failure_boundary) !== false)
{
$lines = explode(PHP_EOL, $raw_data);
$return_data['error'] = true;
$error_lines = array();
while(true)
{
$line = array_pop($lines);
if(substr($line, 0, 1) === ' ')
{
break;
}
array_push($error_lines, $line);
}
if(empty($error_lines) === false)
{
$error_lines = array_reverse($error_lines);
$return_data['error_message'] = implode(' ', $error_lines);
}
$return_data['finished'] = true;
}
if(strpos($raw_data, $completion_boundary) !== false)
{
$return_data['completed'] = true;
$return_data['finished'] = true;
}
if(strpos($raw_data, $error_code_boundary) !== false)
{
if(preg_match('/'.$error_code_boundary.'([0-9]+)/', $raw_data, $matches) > 0)
{
$return_data['error'] = $matches[1];
}
}
}
protected function _parseOutputData(&$return_data, $raw_data)
{
$return_data['started'] = true;
// get the total duration from the output
$total_duration = '00:00:00.00';
if(preg_match('/Duration:\s+([^,]*)/', $raw_data, $matches) > 0)
{
$total_duration = $matches[1];
}
$total_duration = new Timecode($total_duration, Timecode::INPUT_FORMAT_TIMECODE);
if(preg_match('/Input\s#0,\s+[^\s]+,\s+from\s+(.*):/', $raw_data, $input_matches) > 0)
{
$return_data['input_file'] = trim($input_matches[1], '\'"');
}
if(preg_match('/Output\s#0,\s+[^\s]+,\s+to\s+(.*):/', $raw_data, $output_matches) > 0)
{
$return_data['output_file'] = trim($output_matches[1], '\'"');
}
$return_data['process_file'] = $this->_output;
// parse out the details of the data.
if(preg_match_all(
'/frame=\s*([0-9]+)\s'.
'fps=\s*([0-9\.]+)\s'.
'q=([0-9\.]+)\s'.
'(L)?size=\s*([0-9\.bkBmg]+)\s'.
'time=\s*([0-9]{2,}:[0-9]{2}:[0-9]{2}.[0-9]+)\s'.
'bitrate=\s*([0-9\.]+\s?[bkBmg\/s]+)'.
'(\sdup=\s*([0-9]+))?'.
'(\sdrop=\s*([0-9]+))?'.
'(\sdrop=\s*([0-9]+))?'.
'/', $raw_data, $matches) > 0)
{
$last_key = count($matches[0])-1;
$return_data['frame'] = $matches[1][$last_key];
$return_data['fps'] = $matches[2][$last_key];
$return_data['size'] = $matches[5][$last_key];
$return_data['duration'] = new Timecode($matches[6][$last_key], Timecode::INPUT_FORMAT_TIMECODE);
$return_data['percentage'] = ($return_data['duration']->total_seconds/$total_duration->total_seconds)*100;
$return_data['dup'] = $matches[9][$last_key];
$return_data['drop'] = $matches[11][$last_key];
// this is a bit fuzzy
if($matches[4][$last_key] === 'L')
{
if($return_data['percentage'] < 99.5)
{
$return_data['interrupted'] = true;
$return_data['finished'] = true;
}
else
{
$return_data['percentage'] = 100;
}
}
// work out the fps average for performance reasons
if(count($matches[2]) === 1)
{
$return_data['fps_avg'] = $return_data['frame']/$return_data['run_time'];
}
else
{
$total_fps = 0;
foreach ($matches[2] as $fps)
{
$total_fps += $fps;
}
$return_data['fps_avg'] = $total_fps/($last_key+1);
}
}
}
protected function _getRawData()
{
return file_get_contents($this->_output);
}
}
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