/* Copyright (c) 2005, Christophe Fergeau <teuf@gnome.org>
 * All rights reserved.

 * Redistribution and use in source and binary forms, with or without 
 * modification, are permitted provided that the following conditions are met:
 *
 *    * Redistributions of source code must retain the above copyright notice, 
 *      this list of conditions and the following disclaimer.
 *    * Redistributions in binary form must reproduce the above copyright 
 *      notice, this list of conditions and the following disclaimer in the 
 *      documentation and/or other materials provided with the distribution.
 *    * Neither the name of the <ORGANIZATION> nor the names of its 
 *      contributors may be used to endorse or promote products derived from 
 *      this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" 
 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 
 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE 
 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 
 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 
 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 
 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 
 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 
 * POSSIBILITY OF SUCH DAMAGE.
 */

#include "itdb.h"

#include <locale.h>
#include <gdk-pixbuf/gdk-pixbuf.h>

static GdkPixbuf *
ipod_image_to_gdk_pixbuf (Itdb_Image *image)
{
	GdkPixbuf *result;
	guchar *pixels;
	int row_stride;

	g_print ("width: %d height: %d size: %d\n",
		 image->width, image->height, image->size);

/*
description     photo: size width  nano: size width
====================  ===== =====       ===== =====
artwork big           39200   140       20000   100
artwork small          6272    56        3528    42
photo full-screen         ?     ?       46464   176
photo thumbnail           ?     ?        3108    42
*/

	switch (image->size)
	{
	case 39200: /* ITDB_IMAGE_FULL_SCREEN */
	    row_stride = 140;
	    break;

	case 46464: /* iPod nano photo database full screen */
	    row_stride = 176;
	    break;

	case 6272: /* ITDB_IMAGE_NOW_PLAYING */
	    row_stride = 56;
	    break;

	case 3108: /* iPod nano photo database thumbnails */
/*	    if (width  > 42) width  = 42;
	    if (height > 37) height = 37; ??? */
	    row_stride = 42;
	    break;

	default:
	    return NULL;
	}


	pixels = itdb_image_get_rgb_data (image);
	if (pixels == NULL) {
		return NULL;
	}

	result = gdk_pixbuf_new_from_data (pixels, GDK_COLORSPACE_RGB, FALSE,
					   8, image->width, image->height,
					   row_stride * 3,
					   (GdkPixbufDestroyNotify)g_free,
					   NULL);
	return result;
}


static void
save_itdb_image (Itdb_Image *image, const char *filename)
{
	GdkPixbuf *thumb;
	
	thumb = ipod_image_to_gdk_pixbuf (image);
	if (thumb != NULL) {
		gdk_pixbuf_save (thumb, filename, "png", NULL, NULL);
		gdk_pixbuf_unref (thumb);
/*		g_print ("Saved %s\n", filename); */
	}
}
static void
save_song_thumbnails (Itdb_Track *song)
{
	GList *it;
	
	for (it = song->thumbnails; it != NULL; it = it->next) {
		Itdb_Image *image;
		gchar *filename;

		image = (Itdb_Image *)it->data;
		g_return_if_fail (image);

		filename = NULL;
		if (image->type == ITDB_IMAGE_FULL_SCREEN) {
			filename = g_strdup_printf ("/tmp/fullsize%016"G_GINT64_MODIFIER"x.png",
						    song->dbid);
		} else if (image->type == ITDB_IMAGE_NOW_PLAYING) {
			filename = g_strdup_printf ("/tmp/nowplaying%016"G_GINT64_MODIFIER"x.png", 
						    song->dbid);
		}
		if (filename != NULL) {
			save_itdb_image (image, filename);
			g_free (filename);
		}
	}
}


static void
save_thumbnails (Itdb_iTunesDB *db)
{
	GList *it;

	for (it = db->tracks; it != NULL; it = it->next) {
		Itdb_Track *song;
		
		song = (Itdb_Track *)it->data;
		save_song_thumbnails (song);
	}
}

int
main (int argc, char **argv)
{
	Itdb_iTunesDB *db;


	if (argc < 2) {
		g_print ("Usage: %s mountpoint\n", argv[0]);
		return 1;
	}
	
	setlocale (LC_ALL, "");
	g_type_init ();
	db = itdb_parse (argv[1], NULL);
	if (db == NULL) {
		g_print ("Error reading iPod database\n");
		return 1;
	}

	g_print ("========== ArtworkDB ==========\n");
	save_thumbnails (db);
	itdb_free (db);

	return 0;
}