<?
# DMI-GAL - An Image Gallery derived from DMI
# dmi-thumb.inc - Thumbnails generator library
# 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
# 2002-08-29 Sandino Araico Sánchez - Moved config to constants
# 2002-09-08 Sandino Araico Sánchez - Fixed broken table
# 2002-09-09 Sandino Araico Sánchez - Forked dmi-thumb.inc from dmi-thumb.php

if(!defined('__DMI_THUMB__'))
{
	define('__DMI_THUMB__',1);
//**********************************************************************/
include "dmi-conf.inc.php";
include "dmi-lib.inc";
include "s/s-extended.inc";
//**********************************************************************/
function dmi_thumb_create_mpeg_thumb($thumbs_dir,$name)
{
	$thumb_name = dmi_thumb_get_thumb_name($thumbs_dir, $name);
	$dump_dir = $thumbs_dir.dmi_get_file_name($name);
	$thumb_info=dmi_thumb_get_thumb_info($thumb_name);
	if(empty($thumb_info)) {
		// clean up any old bitmaps that might be laying
		// around	
		clearBitmaps(dmi_get_file_name($name));

		if(!s_check_dir($dump_dir, 0755)) return 0;
		putenv("SDL_VIDEODRIVER=dummy");
		putenv("SDL_AUDIODRIVER=disk");
		putenv("SDL_DISKAUDIOFILE=/dev/null");
	

		// dumpmpeg dumps bitmaps to the current dir
		if(!@chdir($dump_dir)) return 0;

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

		// create an animated gif of the bitmaps
		$command = __DMI_CONVERT_PROG." -loop 100 -delay "
			.shellWrap(__DMI_ANIM_DELAY)
			." -geometry ".__DMI_THUMB_WIDTH
			."x".__DMI_THUMB_HEIGHT." " 
			.shellWrap($dump_dir)."/*.bmp "
			.shellWrap($thumb_name);
		//echo $command;
		`$command`;
		clearBitmaps(dmi_get_file_name($name));
		$thumb_info=dmi_thumb_get_thumb_info($thumb_name);
	}
	return $thumb_info;
}

function dmi_thumb_get_thumb_name($thumbs_dir, $name, $extension='gif')
{
	$file_name=dmi_get_file_name($name);
	return "$thumbs_dir$file_name"."_thumb.$extension";
}

function dmi_thumb_get_thumb_info($thumb_name)
{
	if(!file_exists($thumb_name))
		return 0;
	s_log("thumb_name: $thumb_name");	
	$thumb_info =  getImageSize($thumb_name);
	if(is_array($thumb_info))
	{
		$thumb_info['NAME']=$thumb_name;
		return $thumb_info;
	}
	return 0;
}
//**********************************************************************/
} //__DMI_THUMB__
?>