Libav
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00001 /* 00002 * software YUV to RGB converter using mediaLib 00003 * 00004 * Copyright (C) 2003 Michael Niedermayer <michaelni@gmx.at> 00005 * 00006 * This file is part of FFmpeg. 00007 * 00008 * FFmpeg is free software; you can redistribute it and/or 00009 * modify it under the terms of the GNU Lesser General Public 00010 * License as published by the Free Software Foundation; either 00011 * version 2.1 of the License, or (at your option) any later version. 00012 * 00013 * FFmpeg is distributed in the hope that it will be useful, 00014 * but WITHOUT ANY WARRANTY; without even the implied warranty of 00015 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 00016 * Lesser General Public License for more details. 00017 * 00018 * You should have received a copy of the GNU Lesser General Public 00019 * License along with FFmpeg; if not, write to the Free Software 00020 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA 00021 */ 00022 00023 #include <mlib_types.h> 00024 #include <mlib_status.h> 00025 #include <mlib_sys.h> 00026 #include <mlib_video.h> 00027 #include <inttypes.h> 00028 #include <stdlib.h> 00029 #include <assert.h> 00030 00031 #include "libswscale/swscale.h" 00032 00033 static int mlib_YUV2ARGB420_32(SwsContext *c, uint8_t* src[], int srcStride[], int srcSliceY, 00034 int srcSliceH, uint8_t* dst[], int dstStride[]) 00035 { 00036 if(c->srcFormat == PIX_FMT_YUV422P) { 00037 srcStride[1] *= 2; 00038 srcStride[2] *= 2; 00039 } 00040 00041 assert(srcStride[1] == srcStride[2]); 00042 00043 mlib_VideoColorYUV2ARGB420(dst[0]+srcSliceY*dstStride[0], src[0], src[1], src[2], c->dstW, 00044 srcSliceH, dstStride[0], srcStride[0], srcStride[1]); 00045 return srcSliceH; 00046 } 00047 00048 static int mlib_YUV2ABGR420_32(SwsContext *c, uint8_t* src[], int srcStride[], int srcSliceY, 00049 int srcSliceH, uint8_t* dst[], int dstStride[]) 00050 { 00051 if(c->srcFormat == PIX_FMT_YUV422P) { 00052 srcStride[1] *= 2; 00053 srcStride[2] *= 2; 00054 } 00055 00056 assert(srcStride[1] == srcStride[2]); 00057 00058 mlib_VideoColorYUV2ABGR420(dst[0]+srcSliceY*dstStride[0], src[0], src[1], src[2], c->dstW, 00059 srcSliceH, dstStride[0], srcStride[0], srcStride[1]); 00060 return srcSliceH; 00061 } 00062 00063 static int mlib_YUV2RGB420_24(SwsContext *c, uint8_t* src[], int srcStride[], int srcSliceY, 00064 int srcSliceH, uint8_t* dst[], int dstStride[]) 00065 { 00066 if(c->srcFormat == PIX_FMT_YUV422P) { 00067 srcStride[1] *= 2; 00068 srcStride[2] *= 2; 00069 } 00070 00071 assert(srcStride[1] == srcStride[2]); 00072 00073 mlib_VideoColorYUV2RGB420(dst[0]+srcSliceY*dstStride[0], src[0], src[1], src[2], c->dstW, 00074 srcSliceH, dstStride[0], srcStride[0], srcStride[1]); 00075 return srcSliceH; 00076 } 00077 00078 00079 SwsFunc ff_yuv2rgb_init_mlib(SwsContext *c) 00080 { 00081 switch(c->dstFormat) { 00082 case PIX_FMT_RGB24: return mlib_YUV2RGB420_24; 00083 case PIX_FMT_BGR32: return mlib_YUV2ARGB420_32; 00084 case PIX_FMT_RGB32: return mlib_YUV2ABGR420_32; 00085 default: return NULL; 00086 } 00087 } 00088