apps/plugins/lib/read_image.c

   1 /***************************************************************************
   2 *             __________               __   ___.
   3 *   Open      \______   \ ____   ____ |  | _\_ |__   _______  ___
   4 *   Source     |       _//  _ \_/ ___\|  |/ /| __ \ /  _ \  \/  /
   5 *   Jukebox    |    |   (  <_> )  \___|    < | \_\ (  <_> > <  <
   6 *   Firmware   |____|_  /\____/ \___  >__|_ \|___  /\____/__/\_ \
   7 *                     \/            \/     \/    \/            \/
   8 * $Id$
   9 *
  10 * Copyright (C) 2009 by Andrew Mahone
  11 *
  12 * This is a wrapper for the core jpeg_load.c
  13 *
  14 * This program is free software; you can redistribute it and/or
  15 * modify it under the terms of the GNU General Public License
  16 * as published by the Free Software Foundation; either version 2
  17 * of the License, or (at your option) any later version.
  18 *
  19 * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
  20 * KIND, either express or implied.
  21 *
  22 ****************************************************************************/
  23
  24 #include <plugin.h>
  25 #include "feature_wrappers.h"
  26 #include "read_image.h"
  27
  28 int read_image_file(const char* filename, struct bitmap *bm, int maxsize,
  29                     int format, const struct custom_format *cformat)
  30 {
  31     int namelen = rb->strlen(filename);
  32     if (rb->strcmp(filename + namelen - 4, ".bmp"))
  33         return read_jpeg_file(filename, bm, maxsize, format, cformat);
  34     else
  35         return scaled_read_bmp_file(filename, bm, maxsize, format, cformat);
  36 }
  37
  38 int read_image_file_offset(int offset, const char* filename, struct bitmap *bm,
  39                            int maxsize, int format,
  40                            const struct custom_format *cformat)
  41 {
  42     int fd = rb->open(filename, O_RDONLY);
  43     if (fd < 0)
  44         return fd;
  45     if (offset != rb->lseek(fd, offset, SEEK_SET))
  46         return -1;
  47     int namelen = rb->strlen(filename);
  48     if (rb->strcmp(filename + namelen - 4, ".bmp"))
  49         return read_jpeg_fd(fd, bm, maxsize, format, cformat);
  50     else
  51         return scaled_read_bmp_fd(fd, bm, maxsize, format, cformat);
  52 }