mirror of
https://github.com/alchemy-fr/Phraseanet.git
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102 lines
2.2 KiB
PHP
102 lines
2.2 KiB
PHP
<?php
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/*
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* This file is part of Phraseanet
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*
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* (c) 2005-2010 Alchemy
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*
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* For the full copyright and license information, please view the LICENSE
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* file that was distributed with this source code.
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*/
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/**
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* Abstract video adapter object for binaryAdapter
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*
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* @package binaryAdapter
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* @license http://opensource.org/licenses/gpl-3.0 GPLv3
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* @link www.phraseanet.com
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*/
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abstract class binaryAdapter_video_processorAbstract extends binaryAdapter_processorAbstract
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{
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/**
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*
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* @param int $value
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* @param int $multiple
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* @param string $bound
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* @return int
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*/
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protected function get_multiple($value, $multiple, $bound='nearest')
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{
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$modulo = $value % $multiple;
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$ret = 0;
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if ($bound == 'nearest')
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{
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$half_distance = $multiple / 2;
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if ($modulo <= $half_distance)
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$bound = 'bottom';
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else
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$bound = 'top';
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}
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switch ($bound)
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{
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default:
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case 'top':
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$ret = $value + $multiple - $modulo;
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break;
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case 'bottom':
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$ret = $value - $modulo;
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break;
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}
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if ($ret < $multiple)
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$ret = $multiple;
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return (int) $ret;
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}
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/**
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*
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* @param system_file $origine
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* @param int $size
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* @return array
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*/
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protected function get_dimensions(system_file $origine, $size)
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{
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$tech_datas = $origine->get_technical_datas();
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$maxSize = $this->get_multiple($size, 16, 'bottom');
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$srcWidth = $tech_datas[system_file::TC_DATAS_WIDTH];
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$srcHeight = $tech_datas[system_file::TC_DATAS_HEIGHT];
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if ($srcWidth > $maxSize || $srcHeight > $maxSize)
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{
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if ($srcWidth >= $srcHeight)
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{
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$newWidth = (int) $maxSize;
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$height = round($newWidth * $srcHeight / $srcWidth);
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$newHeight = $this->get_multiple($height, 16);
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}
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else
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{
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$newHeight = (int) $maxSize;
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$width = round($newHeight * $srcWidth / $srcHeight);
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$newWidth = $this->get_multiple($width, 16);
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}
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}
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else
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{
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$newHeight = $this->get_multiple($srcHeight, 16);
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$newWidth = $this->get_multiple($srcWidth, 16);
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}
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return array('width' => $newWidth, 'height' => $newHeight);
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}
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}
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