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File: src/PHPVideoToolkit/ParserAbstract.php

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  Classes of Oliver Lillie  >  PHP Video Toolkit  >  src/PHPVideoToolkit/ParserAbstract.php  >  Download  
File: src/PHPVideoToolkit/ParserAbstract.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: 10 months ago
Size: 3,446 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
     */
   
abstract class ParserAbstract //extends Loggable
   
{
        protected
$_program_path;
        protected
$_temp_directory;
        protected
$_cacher;
        static
$_cache = array();
       
        public function
__construct(Config $config=null, $program_config_key='ffmpeg')
        {
           
$this->_config = $config === null ? Config::getInstance() : $config;
           
            if(
$this->isAvailable() === false)
            {
                throw new
Exception('FFmpeg appears to be unavailable on your system.');
            }
        }
       
       
/**
         * Sets a cacher object.
         *
         * @access public
         * @author Oliver Lillie
         * @param CacheAbstract $cache_object
         * @return void
         */
       
public function setCacher(CacheAbstract $cache_object=null)
        {
           
$this->_cacher = $cache_object;
        }
       
       
/**
         * Returns the cacher object.
         *
         * @access public
         * @author Oliver Lillie
         * @return CacheAbstract
         */
       
public function getCacher()
        {
            return
$this->_cacher;
        }
       
       
/**
         * Gets a value from the class cache and if not found then looks into
         * the cache object.
         *
         * @access public
         * @author Oliver Lillie
         * @param string $key
         * @param string $default_value
         * @return void
         */
       
protected function _cacheGet($key, $default_value=null)
        {
            if(isset(
self::$_cache[$key]) === true)
            {
                return
self::$_cache[$key];
            }
            else if(
is_object($this->_cacher) === true)
            {
                return
$this->_cacher->get($key, $default_value);
            }
            return
$default_value;
        }
       
       
/**
         * Sets a value into the class cache and the cacher object.
         *
         * @access public
         * @author Oliver Lillie
         * @param string $key
         * @param string $value
         * @param string $expiry
         * @return void
         */
       
protected function _cacheSet($key, $value, $expiry=null)
        {
           
self::$_cache[$key] = $value;
           
            if(
is_object($this->_cacher) === true)
            {
                return
$this->_cacher->set($key, $value, $expiry);
            }
           
            return
null;
        }
       
       
/**
         * Checks to see if ffmpeg is available.
         *
         * @access public
         * @author Oliver Lillie
         * @param boolean $read_from_cache
         * @return boolean
         */
       
abstract public function isAvailable($read_from_cache=true);
    }