<?
# DMI-GAL - An Image Gallery derived from DMI
# dmi-thumb.php - Thumbnails generator
# Copyright (c) 2002 Tony J. White <tjw@tjw.or>
# Copyright (c) 2002 Sandino Araico Sánchez <sandino@sandino.net>

/*  This program 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 2 of the License, or
 *  (at your option) any later version.
 *
 *  This program 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 this program; if not, write to the Free Software
 *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 */
 
# Changelog:
# 2002-01-25 Tony J. White tjw@tjw.org - DirectoryMediaIndex (dmi) 1.2
# 2002-03-14 Sandino Araico Sánchez - Renamed main file to dmi.php

include "dmi-conf.inc.php";
include "dmi-lib.inc";
include "s/s-extended.inc";

$success = 0;
$name = stripslashes($name);
$image_info = @getImageSize($GLOBALS["PHOTO_DIR"]."/".$name);
if(!$image_info) {
	if(is_mpeg_video($GLOBALS["PHOTO_DIR"]."/".$name)) {
		$success = 1;
		$is_mpeg_video = 1;
	}
}
else $success = 1;

#$THUMBS_DIR="$PHOTO_DIR/thumbs/$THUMB_WIDTH"."x$THUMB_HEIGHT/";
#if(!is_dir($PHOTO_DIR."/thumbs")) 
#	$success = @mkdir($PHOTO_DIR."/thumbs", 0755);
#if(!$success) errorImage();
#if(!is_dir($THUMBS_DIR)) 
#	$success = @mkdir($THUMBS_DIR, 0755);
#if(!$success) errorImage();
if(!s_check_dir($THUMBS_DIR, 0755))
	errorImage();

if($is_mpeg_video) {
	$thumb_name = $THUMBS_DIR.getFileName($name)
			."_thumb.gif";
	$dump_dir = $THUMBS_DIR.getFileName($name);
	if(!($thumb_info = @getImageSize($thumb_name))) {
		// clean up any old bitmaps that might be laying
		// around	
		clearBitmaps(getFileName($name));

		if(!@mkdir($dump_dir, 0755)) errorImage();
		putenv("SDL_VIDEODRIVER=dummy");
		putenv("SDL_AUDIODRIVER=disk");
		putenv("SDL_DISKAUDIOFILE=/dev/null");
	

		// dumpmpeg dumps bitmaps to the current dir
		if(!@chdir($dump_dir)) errorImage();

		// dump out the bitmaps
		$command = "$DUMPMPEG_PROG --dump "
				.shellWrap($MPEG_FRAME_FREQ)." ../../"
				.shellWrap($name);
		//echo $command;
		`$command`;

		// create an animated gif of the bitmaps
		$command = "$CONVERT_PROG -loop 100 -delay "
			.shellWrap($ANIM_DELAY)
			." -geometry ".$THUMB_WIDTH
			."x".$THUMB_HEIGHT." " 
			.shellWrap($dump_dir)."/*.bmp "
			.shellWrap($thumb_name);
		//echo $command;
		`$command`;
		clearBitmaps(getFileName($name));
		if(!($thumb_info = @getImageSize($thumb_name))) 	
			errorImage();
	}
	header("Content-type: image/gif");
	readfile($thumb_name);
}
else {
	$thumb_name = $THUMBS_DIR.getFileName($name)
			."_thumb".getExtension($image_info[2]);
	if(!($thumb_info = @getImageSize($thumb_name))) {
		$command = "$CONVERT_PROG -geometry ".$THUMB_WIDTH
			."x".$THUMB_HEIGHT 
			." $PHOTO_DIR/".shellWrap($name)."  "
			.shellWrap($thumb_name);
		//echo $command;
		`$command`;
		if(!($thumb_info = @getImageSize($thumb_name))) 	
			errorImage();
	}
	header("Content-type: ".getMimeType($thumb_info[2]));
	readfile($thumb_name);
}
?>