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File: src/PHPVideoToolkit/Parser.php

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  Classes of Oliver Lillie  >  PHP Video Toolkit  >  src/PHPVideoToolkit/Parser.php  >  Download  
File: src/PHPVideoToolkit/Parser.php
Role: Class source
Content type: text/plain
Description: Class source
Class: PHP Video Toolkit
Manipulate and convert videos with ffmpeg program
Author: By
Last change: updated copy right years and a incorrect version number
updated version number in class files
Date: 5 months ago
Size: 3,524 bytes
 

Contents

Class file image Download
<?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;
     
    
/**
     * This class provides generic data parsing for the output from FFmpeg.
     *
     * @access public
     * @author Oliver Lillie
     * @author Jorrit Schippers
     * @package default
     */
    
class Parser extends ParserAbstract
    
{
        
/**
         * Checks to see if ffmpeg is available.
         *
         * @access public
         * @author Oliver Lillie
         * @param boolean $read_from_cache 
         * @return boolean
         */
        
public function isAvailable($read_from_cache=true)
        {
            
$cache_key 'ffmpeg_available';
            if(
$read_from_cache === true && ($data $this->_cacheGet($cache_key, -1)) !== -1)
            {
                return 
$data;
            }

            
$raw_data $this->getRawFfmpegData($read_from_cache);
            
$data strpos($raw_data'not found') === false && strpos($raw_data'No such file or directory') === false;
            
            
$this->_cacheSet($cache_key$data);
            return 
$data;
        }
        
        
/**
         * Returns the raw data returned from ffmpeg empty function call.
         *
         * @access public
         * @author Oliver Lillie
         * @param boolean $read_from_cache 
         * @return string
         */
        
public function getRawFfmpegData($read_from_cache=true)
        {
            
$cache_key 'ffmpeg_raw_data';
            if(
$read_from_cache === true && ($data $this->_cacheGet($cache_key, -1)) !== -1)
            {
                return 
$data;
            }
            
            
$exec = new FfmpegProcess('ffmpeg'$this->_config);
            
$data $exec->execute()
                         ->
getBuffer();
            
            
// purposley no error checking here as ffmpeg gives an error with no input given.

            
$this->_cacheSet($cache_key$data);
            return 
$data;
        }
        
        
/**
         * Returns the raw data returned from ffmpeg about the available supported formats.
         *
         * @access public
         * @author Oliver Lillie
         * @param boolean $read_from_cache 
         * @return string
         */
        
public function getRawFormatData($read_from_cache=true)
        {
            
$cache_key 'ffmpeg_raw_formats_data';
            if(
$read_from_cache === true && ($data $this->_cacheGet($cache_key, -1)) !== -1)
            {
                return 
$data;
            }
            
            
$exec = new FfmpegProcess('ffmpeg'$this->_config);
            
$data $exec->addCommand('-formats')
                         ->
execute()
                         ->
getBuffer();

//          check the process for any errors.
            
if($exec->hasError() === true)
            {
                throw new 
FfmpegProcessException('An error was encountered with FFmpeg when attempting to read the formats that FFmpeg supports. FFmpeg reported: '.$exec->getLastLine(), null$exec);
            }
            
            
$this->_cacheSet($cache_key$data);
            return 
$data;
        }
        
    }