1/* 2 (C) 2000 Nemosoft Unv. nemosoft@smcc.demon.nl 3 4 This program is free software; you can redistribute it and/or modify 5 it under the terms of the GNU General Public License as published by 6 the Free Software Foundation; either version 2 of the License, or 7 (at your option) any later version. 8 9 This program is distributed in the hope that it will be useful, 10 but WITHOUT ANY WARRANTY; without even the implied warranty of 11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 12 GNU General Public License for more details. 13 14 You should have received a copy of the GNU General Public License 15 along with this program; if not, write to the Free Software 16 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA 17 18*/ 19 20#ifndef CCVT_H 21#define CCVT_H 22 23#include <stdio.h> 24 25#ifdef __cplusplus 26extern "C" { 27#endif 28 29/* Colour ConVerT: going from one colour space to another 30 31 Format descriptions: 32 420i = "4:2:0 interlaced" 33 YYYY UU YYYY UU even lines 34 YYYY VV YYYY VV odd lines 35 U/V data is subsampled by 2 both in horizontal 36 and vertical directions, and intermixed with the Y values. 37 38 420p = "4:2:0 planar" 39 YYYYYYYY N lines 40 UUUU N/2 lines 41 VVVV N/2 lines 42 U/V is again subsampled, but all the Ys, Us and Vs are placed 43 together in separate buffers. The buffers may be placed in 44 one piece of contiguous memory though, with Y buffer first, 45 followed by U, followed by V. 46 47 yuyv = "4:2:2 interlaced" 48 YUYV YUYV YUYV ... N lines 49 The U/V data is subsampled by 2 in horizontal direction only. 50 51 bgr24 = 3 bytes per pixel, in the order Blue Green Red (whoever came up 52 with that idea...) 53 rgb24 = 3 bytes per pixel, in the order Red Green Blue (which is sensible) 54 rgb32 = 4 bytes per pixel, in the order Red Green Blue Alpha, with 55 Alpha really being a filler byte (0) 56 bgr32 = last but not least, 4 bytes per pixel, in the order Blue Green Red 57 Alpha, Alpha again a filler byte (0) 58 */ 59 60/* Functions in ccvt_c.c */ 61/* 4:2:0 YUV interlaced to RGB/BGR */ 62void ccvt_420i_bgr24(int width, int height, void *src, void *dst); 63void ccvt_420i_rgb24(int width, int height, void *src, void *dst); 64void ccvt_420i_bgr32(int width, int height, void *src, void *dst); 65void ccvt_420i_rgb32(int width, int height, void *src, void *dst); 66 67/* 4:2:0 YUV planar to RGB/BGR */ 68void ccvt_420p_bgr24(int width, int height, void *src, void *srcu, void *srcv, void *dst); 69void ccvt_420p_rgb24(int width, int height, void *src, void *srcu, void *srcv, void *dst); 70void ccvt_420p_bgr32(int width, int height, void *src, void *srcu, void *srcv, void *dst); 71void ccvt_420p_rgb32(int width, int height, void *src, void *srcu, void *srcv, void *dst); 72 73/* 4:2:2 YUYV interlaced to RGB/BGR */ 74void ccvt_yuyv_rgb32(int width, int height, void *src, void *dst); 75void ccvt_yuyv_bgr32(int width, int height, void *src, void *dst); 76void ccvt_yuyv_rgb24(int width, int height, void *src, void *dst); 77void ccvt_yuyv_bgr24(int width, int height, void *src, void *dst); 78 79/* 4:2:0 YUV planar to RGB/BGR */ 80//void ccvt_420p_rgb32(int width, int height, void *srcy, void *srcu, void *srcv, void *dst); 81//void ccvt_420p_bgr32(int width, int height, void *srcy, void *srcu, void *srcv, void *dst); 82 83/* RGB/BGR to 4:2:0 YUV interlaced */ 84 85/* RGB/BGR to 4:2:0 YUV planar */ 86void ccvt_rgb24_420p(int width, int height, void *src, void *dsty, void *dstu, void *dstv); 87void ccvt_bgr24_420p(int width, int height, void *src, void *dsty, void *dstu, void *dstv); 88 89/* Go from 420i to other yuv formats */ 90void ccvt_420i_420p(int width, int height, void *src, void *dsty, void *dstu, void *dstv); 91void ccvt_420i_yuyv(int width, int height, void *src, void *dst); 92 93#ifdef __cplusplus 94} 95#endif 96 97#endif 98