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/*
* Copyright (C) 2005 Christophe Fergeau
*
*
* The code contained in this file is free software; you can redistribute
* it and/or modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either version
* 2.1 of the License, or (at your option) any later version.
*
* This file 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this code; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
* iTunes and iPod are trademarks of Apple
*
* This product is not supported/written/published by Apple!
*
*/
#include <errno.h>
#include <stdio.h>
#include <string.h>
#include <sys/types.h>
#include <glib.h>
#include <glib-object.h>
#include "db-artwork-parser.h"
#include "db-image-parser.h"
static unsigned char *
unpack_RGB_565 (gushort *pixels, unsigned int bytes_len)
{
unsigned char *result;
unsigned int i;
result = g_malloc ((bytes_len/2) * 3);
if (result == NULL) {
return NULL;
}
for (i = 0; i < bytes_len/2; i++) {
gushort cur_pixel;
cur_pixel = GINT16_FROM_LE (pixels[i]);
/* Unpack pixels */
result[3*i] = (pixels[i] & RED_MASK) >> RED_SHIFT;
result[3*i+1] = (pixels[i] & GREEN_MASK) >> GREEN_SHIFT;
result[3*i+2] = (pixels[i] & BLUE_MASK) >> BLUE_SHIFT;
/* Normalize color values so that they use a [0..255] range */
result[3*i] <<= (8 - RED_BITS);
result[3*i+1] <<= (8 - GREEN_BITS);
result[3*i+2] <<= (8 - BLUE_BITS);
}
return result;
}
static unsigned char *
get_pixel_data (Itdb_Image *image)
{
unsigned char *result;
FILE *f;
int res;
f = NULL;
result = g_malloc (image->size);
if (result == NULL) {
return NULL;
}
f = fopen (image->filename, "r");
if (f == NULL) {
g_print ("Failed to open %s: %s\n",
image->filename, strerror (errno));
goto end;
}
res = fseek (f, image->offset, SEEK_SET);
if (res != 0) {
g_print ("Seek to %lu failed on %s: %s\n",
image->offset, image->filename, strerror (errno));
goto end;
}
res = fread (result, image->size, 1, f);
if (res != 1) {
g_print ("Failed to read %u bytes from %s: %s\n",
image->size, image->filename, strerror (errno));
goto end;
}
fclose (f);
return result;
end:
if (f != NULL) {
fclose (f);
}
g_free (result);
return NULL;
}
unsigned char *
itdb_image_get_rgb_data (Itdb_Image *image)
{
void *pixels565;
void *pixels;
pixels565 = get_pixel_data (image);
if (pixels565 == NULL) {
return NULL;
}
pixels = unpack_RGB_565 (pixels565, image->size);
g_free (pixels565);
return pixels;
/* return gdk_pixbuf_new_from_data (pixels, GDK_COLORSPACE_RGB, FALSE,
8, image->width, image->height,
image->width * 3,
(GdkPixbufDestroyNotify)g_free,
NULL);
*/
}
G_GNUC_INTERNAL char *
ipod_image_get_ithmb_filename (const char *mount_point, gint correlation_id)
{
char *paths[] = {"iPod_Control", "Artwork", NULL, NULL};
char *filename;
paths[2] = g_strdup_printf ("F%04u_1.ithmb", correlation_id);
filename = itdb_resolve_path (mount_point, (const char **)paths);
g_free (paths[2]);
return filename;
}
G_GNUC_INTERNAL Itdb_Image *
ipod_image_new_from_mhni (MhniHeader *mhni, const char *mount_point)
{
Itdb_Image *img;
img = g_new0 (Itdb_Image, 1);
if (img == NULL) {
return NULL;
}
img->filename = ipod_image_get_ithmb_filename (mount_point,
GINT_FROM_LE (mhni->correlation_id));
img->size = GINT_FROM_LE (mhni->image_size);
img->offset = GINT_FROM_LE (mhni->ithmb_offset);
img->width = (GINT_FROM_LE (mhni->image_dimensions) & 0xffff0000) >> 16;
img->height = (GINT_FROM_LE (mhni->image_dimensions) & 0x0000ffff);
switch (mhni->correlation_id) {
case IPOD_THUMBNAIL_FULL_SIZE_CORRELATION_ID:
case IPOD_NANO_THUMBNAIL_FULL_SIZE_CORRELATION_ID:
img->type = ITDB_IMAGE_FULL_SCREEN;
break;
case IPOD_THUMBNAIL_NOW_PLAYING_CORRELATION_ID:
case IPOD_NANO_THUMBNAIL_NOW_PLAYING_CORRELATION_ID:
img->type = ITDB_IMAGE_NOW_PLAYING;
break;
default:
g_print ("Unrecognized image size: %08x\n",
GINT_FROM_LE (mhni->image_dimensions));
g_free (img);
return NULL;
}
return img;
}
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