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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: 11 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;
        }
       
    }