<?php
/*    
 *    Copyright (c) 2010 VidiScript
 *
 *    This file is part of VidiScript.
 *
 *    VidiScript is free software: you can redistribute it and/or modify
 *    it under the terms of the GNU General Public License as published by
 *    the Free Software Foundation, either version 3 of the License, or
 *    (at your option) any later version.
 *
 *    VidiScript is distributed in the hope that it will be useful,
 *    but WITHOUT ANY WARRANTY; without even the implied warranty of
 *    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *    GNU General Public License for more details.
 *
 *    You should have received a copy of the GNU General Public License
 *    along with VidiScript.  If not, see <http://www.gnu.org/licenses/>.
 *
 *    File Name: imagefunctions.inc
 *    Description: Functions for creating thumbnails
 *    $Date: 2010-02-21 23:16:57 +0000 (Sun, 21 Feb 2010) $
 *    $Revision: 12 $
 */ 
function ResizeMath($maxW, $maxH, $img) {
	$imageW = imagesx($img) ;
	$imageH = imagesy($img) ;
	if ($imageW <= $maxW && $imageH <= $maxH) {
		$thumbW = $imageW ;
		$thumbH = $imageH ;
	}
	else {
		if ($imageW >= $imageH) {
			$thumbW = $maxW ;
			$thumbH = $maxW / $imageW * $imageH ;
		}
		else {
			$thumbH = $maxH ;
			$thumbW = $maxH / $imageH * $imageW ;
		}
	}
	$thumbW = round($thumbW) ;
	$thumbH = round($thumbH) ;
	$thesize = array($thumbW, $thumbH, $imageW, $imageH) ;
	return $thesize ;
}
function findThumb($video, $just_file = false) {
	$thumbs = array() ;
	$extensions = array("jpg", "jpeg", "png", "gif") ;
	$searchpaths = array("uploads/thumbs/", "/uploads/thumbs/", "../uploads/thumbs/", "../../uploads/thumbs") ;
	foreach ($extensions as $ext) {
		foreach ($searchpaths as $path) {
			if (strlen($thumbs[0]) > 1 && strlen($thumbs[1]) > 1)
				break (2) ;
			if (@file_exists($path.$video.".small.".$ext) && strlen($thumbs[0]) < 1) {
				if ($just_file)
					$thumbs[0] = $video.".small.".$ext ;
				else
					$thumbs[0] = $path.$video.".small.".$ext ;
			}
			if (@file_exists($path.$video.".large.".$ext) && strlen($thumbs[1]) < 1) {
				if ($just_file)
					$thumbs[1] = $video.".large.".$ext ;
				else
					$thumbs[1] = $path.$video.".large.".$ext ;
			}
		}
	}
	if (isset($thumbs[0]) && isset($thumbs[1]))
		return $thumbs ;
}
function createThumb($name, $maxW, $maxH, $image_path, $thumb_path, $outname) {
	global $db ;
	$ext = substr($name, strrpos($name, ".") + 1) ;
	switch (strtolower($ext)) {
		case "jpg":
		case "jpeg":
			$img = imagecreatefromjpeg($image_path.$name) ;
			$size = ResizeMath($maxW, $maxH, $img) ;
			$size[0] = $maxW ;
			$size[1] = $maxH ;
			$img2 = imagecreatetruecolor($size[0], $size[1]) ;
			imagecopyresized($img2, $img, 0, 0, 0, 0, $size[0], $size[1], $size[2], $size[3]) ;
			imagejpeg($img2, $thumb_path.$outname) ;
			return true ;
			break ;
		case "png":
			$img = imagecreatefrompng($image_path.$name) ;
			$size = ResizeMath($maxW, $maxH, $img) ;
			$size[0] = $maxW ;
			$size[1] = $maxH ;
			$img2 = imagecreatetruecolor($size[0], $size[1]) ;
			imagecopyresampled($img2, $img, 0, 0, 0, 0, $size[0], $size[1], $size[2], $size[3]) ;
			imagepng($img2, $thumb_path.$outname) ;
			return true ;
			break ;
		case "gif":
			$img = imagecreatefromgif($image_path.$name) ;
			$size = ResizeMath($maxW, $maxH, $img) ;
			$size[0] = $maxW ;
			$size[1] = $maxH ;
			$img2 = imagecreatetruecolor($size[0], $size[1]) ;
			imagecopyresampled($img2, $img, 0, 0, 0, 0, $size[0], $size[1], $size[2], $size[3]) ;
			imagegif($img2, $thumb_path.$outname) ;
			return true ;
			break ;
		default:
			return false ;
			break ;
	}
}
?>