00001 /* 00002 (C) 2001 Nemosoft Unv. nemosoft@smcc.demon.nl 00003 00004 This program is free software; you can redistribute it and/or modify 00005 it under the terms of the GNU General Public License as published by 00006 the Free Software Foundation; either version 2 of the License, or 00007 (at your option) any later version. 00008 00009 This program is distributed in the hope that it will be useful, 00010 but WITHOUT ANY WARRANTY; without even the implied warranty of 00011 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 00012 GNU General Public License for more details. 00013 00014 You should have received a copy of the GNU General Public License 00015 along with this program; if not, write to the Free Software 00016 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA 00017 00018 */ 00019 00020 00021 /* 'Viewport' conversion routines. These functions convert from one colour 00022 space to another, taking into account that the source image has a smaller 00023 size than the view, and is placed inside the view: 00024 00025 +-------view.x------------+ 00026 | | 00027 | +---image.x---+ | 00028 | | | | 00029 | | | | 00030 | +-------------+ | 00031 | | 00032 +-------------------------+ 00033 00034 The image should always be smaller than the view. The offset (top-left 00035 corner of the image) should be precomputed, so you can place the image 00036 anywhere in the view. 00037 00038 The functions take these parameters: 00039 - width image width (in pixels) 00040 - height image height (in pixels) 00041 - plus view width (in pixels) 00042 *src pointer at start of image 00043 *dst pointer at offset (!) in view 00044 */ 00045 00046 00047 #ifndef VCVT_H 00048 #define VCVT_H 00049 00050 #ifdef __cplusplus 00051 extern "C" { 00052 #endif 00053 00054 /* Functions in vcvt_i386.S/vcvt_c.c */ 00055 /* 4:2:0 YUV interlaced to RGB/BGR */ 00056 void vcvt_420i_bgr24(int width, int height, int plus, void *src, void *dst); 00057 void vcvt_420i_rgb24(int width, int height, int plus, void *src, void *dst); 00058 void vcvt_420i_bgr32(int width, int height, int plus, void *src, void *dst); 00059 void vcvt_420i_rgb32(int width, int height, int plus, void *src, void *dst); 00060 00061 00062 /* Go from 420i to other yuv formats */ 00063 void vcvt_420i_420p(int width, int height, int plus, void *src, void *dsty, void *dstu, void *dstv); 00064 void vcvt_420i_yuyv(int width, int height, int plus, void *src, void *dst); 00065 00066 #if 0 00067 #endif 00068 00069 #ifdef __cplusplus 00070 } 00071 #endif 00072 00073 #endif
1.5.1