ccvt.h
/* CCVT: ColourConVerT: simple library for converting colourspaces
Copyright (C) 2002 Nemosoft Unv.
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
For questions, remarks, patches, etc. for this program, the author can be
reached at nemosoft@smcc.demon.nl.
*/
/*
$Log$
Revision 1.1 2005/05/04 06:53:17 section314
Added YUV420P-->RGB conversion
Revision 1.10 2003/10/24 16:55:18 nemosoft
removed erronous log messages
Revision 1.9 2002/11/03 22:46:25 nemosoft
Adding various RGB to RGB functions.
Adding proper copyright header too.
Revision 1.8 2002/04/14 01:00:27 nemosoft
Finishing touches: adding const, adding libs for 'show'
*/
#ifndef CCVT_H
#define CCVT_H
#ifdef __cplusplus
extern "C" {
#endif
/* Colour ConVerT: going from one colour space to another.
** NOTE: the set of available functions is far from complete! **
Format descriptions:
420i = "4:2:0 interlaced"
YYYY UU YYYY UU even lines
YYYY VV YYYY VV odd lines
U/V data is subsampled by 2 both in horizontal
and vertical directions, and intermixed with the Y values.
420p = "4:2:0 planar"
YYYYYYYY N lines
UUUU N/2 lines
VVVV N/2 lines
U/V is again subsampled, but all the Ys, Us and Vs are placed
together in separate buffers. The buffers may be placed in
one piece of contiguous memory though, with Y buffer first,
followed by U, followed by V.
yuyv = "4:2:2 interlaced"
YUYV YUYV YUYV ... N lines
The U/V data is subsampled by 2 in horizontal direction only.
bgr24 = 3 bytes per pixel, in the order Blue Green Red (whoever came up
with that idea...)
rgb24 = 3 bytes per pixel, in the order Red Green Blue (which is sensible)
rgb32 = 4 bytes per pixel, in the order Red Green Blue Alpha, with
Alpha really being a filler byte (0)
bgr32 = last but not least, 4 bytes per pixel, in the order Blue Green Red
Alpha, Alpha again a filler byte (0)
*/
/* 4:2:0 YUV planar to RGB/BGR */
void ccvt_420p_bgr24(int width, int height, const void *src, void *dst);
void ccvt_420p_rgb24(int width, int height, const void *src, void *dst);
void ccvt_420p_bgr32(int width, int height, const void *src, void *dst);
void ccvt_420p_rgb32(int width, int height, const void *src, void *dst);
/* 4:2:2 YUYV interlaced to RGB/BGR */
void ccvt_yuyv_rgb32(int width, int height, const void *src, void *dst);
void ccvt_yuyv_bgr32(int width, int height, const void *src, void *dst);
/* 4:2:2 YUYV interlaced to 4:2:0 YUV planar */
void ccvt_yuyv_420p(int width, int height, const void *src, void *dsty, void *dstu, void *dstv);
/* RGB/BGR to 4:2:0 YUV interlaced */
/* RGB/BGR to 4:2:0 YUV planar */
void ccvt_rgb24_420p(int width, int height, const void *src, void *dsty, void *dstu, void *dstv);
void ccvt_bgr24_420p(int width, int height, const void *src, void *dsty, void *dstu, void *dstv);
/* RGB/BGR to RGB/BGR */
void ccvt_bgr24_bgr32(int width, int height, const void *const src, void *const dst);
void ccvt_bgr24_rgb32(int width, int height, const void *const src, void *const dst);
void ccvt_bgr32_bgr24(int width, int height, const void *const src, void *const dst);
void ccvt_bgr32_rgb24(int width, int height, const void *const src, void *const dst);
void ccvt_rgb24_bgr32(int width, int height, const void *const src, void *const dst);
void ccvt_rgb24_rgb32(int width, int height, const void *const src, void *const dst);
void ccvt_rgb32_bgr24(int width, int height, const void *const src, void *const dst);
void ccvt_rgb32_rgb24(int width, int height, const void *const src, void *const dst);
#ifdef __cplusplus
}
#endif
#endif

Last updated 12 September 2005 21:38:45