apps/plugins/jpeg/yuv2rgb.h

   1 /***************************************************************************
   2 *             __________               __   ___.
   3 *   Open      \______   \ ____   ____ |  | _\_ |__   _______  ___
   4 *   Source     |       _//  _ \_/ ___\|  |/ /| __ \ /  _ \  \/  /
   5 *   Jukebox    |    |   (  <_> )  \___|    < | \_\ (  <_> > <  <
   6 *   Firmware   |____|_  /\____/ \___  >__|_ \|___  /\____/__/\_ \
   7 *                     \/            \/     \/    \/            \/
   8 * $Id$
   9 *
  10 * JPEG image viewer
  11 * (This is a real mess if it has to be coded in one single C file)
  12 *
  13 * File scrolling addition (C) 2005 Alexander Spyridakis
  14 * Copyright (C) 2004 Jörg Hohensohn aka [IDC]Dragon
  15 * Heavily borrowed from the IJG implementation (C) Thomas G. Lane
  16 * Small & fast downscaling IDCT (C) 2002 by Guido Vollbeding  JPEGclub.org
  17 *
  18 * This program is free software; you can redistribute it and/or
  19 * modify it under the terms of the GNU General Public License
  20 * as published by the Free Software Foundation; either version 2
  21 * of the License, or (at your option) any later version.
  22 *
  23 * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
  24 * KIND, either express or implied.
  25 *
  26 ****************************************************************************/
  27
  28 #ifndef _JPEG_YUV2RGB_H
  29 #define _JPEG_YUV2RGB_H
  30
  31 enum color_modes
  32 {
  33     COLOURMODE_COLOUR = 0,
  34     COLOURMODE_GRAY,
  35     COLOUR_NUM_MODES
  36 };
  37
  38 enum dither_modes
  39 {
  40     DITHER_NONE = 0,    /* No dithering */
  41     DITHER_ORDERED,     /* Bayer ordered */
  42     DITHER_DIFFUSION,   /* Floyd/Steinberg error diffusion */
  43     DITHER_NUM_MODES
  44 };
  45
  46 void yuv_bitmap_part(unsigned char *src[3], int csub_x, int csub_y,
  47                      int src_x, int src_y, int stride,
  48                      int x, int y, int width, int height,
  49                      int colour_mode, int dither_mode);
  50
  51 #endif