yuv2rgb_mlib.c
上传用户:riyaled888
上传日期:2009-03-27
资源大小:7338k
文件大小:3k
- /*
- * yuv2rgb_mlib.c, Software YUV to RGB coverter using mediaLib
- *
- * Copyright (C) 2000, H錵an Hjort <d95hjort@dtek.chalmers.se>
- * All Rights Reserved.
- *
- * This file is part of mpeg2dec, a free MPEG-2 video decoder
- *
- * mpeg2dec 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, or (at your option)
- * any later version.
- *
- * mpeg2dec 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 GNU Make; see the file COPYING. If not, write to
- * the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
- *
- */
- #include <mlib_types.h>
- #include <mlib_status.h>
- #include <mlib_sys.h>
- #include <mlib_video.h>
- #include <inttypes.h>
- #include <stdlib.h>
- #include <assert.h>
- #include "img_format.h" //FIXME try to reduce dependency of such stuff
- #include "swscale.h"
- static int mlib_YUV2ARGB420_32(SwsContext *c, uint8_t* src[], int srcStride[], int srcSliceY,
- int srcSliceH, uint8_t* dst[], int dstStride[]){
- if(c->srcFormat == IMGFMT_422P){
- srcStride[1] *= 2;
- srcStride[2] *= 2;
- }
-
- assert(srcStride[1] == srcStride[2]);
-
- mlib_VideoColorYUV2ARGB420(dst[0]+srcSliceY*dstStride[0], src[0], src[1], src[2], c->dstW,
- srcSliceH, dstStride[0], srcStride[0], srcStride[1]);
- return srcSliceH;
- }
- static int mlib_YUV2ABGR420_32(SwsContext *c, uint8_t* src[], int srcStride[], int srcSliceY,
- int srcSliceH, uint8_t* dst[], int dstStride[]){
- if(c->srcFormat == IMGFMT_422P){
- srcStride[1] *= 2;
- srcStride[2] *= 2;
- }
-
- assert(srcStride[1] == srcStride[2]);
-
- mlib_VideoColorYUV2ABGR420(dst[0]+srcSliceY*dstStride[0], src[0], src[1], src[2], c->dstW,
- srcSliceH, dstStride[0], srcStride[0], srcStride[1]);
- return srcSliceH;
- }
- static int mlib_YUV2RGB420_24(SwsContext *c, uint8_t* src[], int srcStride[], int srcSliceY,
- int srcSliceH, uint8_t* dst[], int dstStride[]){
- if(c->srcFormat == IMGFMT_422P){
- srcStride[1] *= 2;
- srcStride[2] *= 2;
- }
-
- assert(srcStride[1] == srcStride[2]);
-
- mlib_VideoColorYUV2RGB420(dst[0]+srcSliceY*dstStride[0], src[0], src[1], src[2], c->dstW,
- srcSliceH, dstStride[0], srcStride[0], srcStride[1]);
- return srcSliceH;
- }
- SwsFunc yuv2rgb_init_mlib(SwsContext *c)
- {
- switch(c->dstFormat){
- case IMGFMT_RGB24: return mlib_YUV2RGB420_24;
- case IMGFMT_RGB32: return mlib_YUV2ARGB420_32;
- case IMGFMT_BGR32: return mlib_YUV2ABGR420_32;
- default: return NULL;
- }
- }