postproc/yuv2rgb_mlib.c

   1 /*
   2  * yuv2rgb_mlib.c, Software YUV to RGB coverter using mediaLib
   3  *
   4  *  Copyright (C) 2000, Håkan Hjort <d95hjort@dtek.chalmers.se>
   5  *  All Rights Reserved.
   6  *
   7  *  This file is part of mpeg2dec, a free MPEG-2 video decoder
   8  *
   9  *  mpeg2dec is free software; you can redistribute it and/or modify
  10  *  it under the terms of the GNU General Public License as published by
  11  *  the Free Software Foundation; either version 2, or (at your option)
  12  *  any later version.
  13  *
  14  *  mpeg2dec is distributed in the hope that it will be useful,
  15  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  16  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  17  *  GNU General Public License for more details.
  18  *
  19  *  You should have received a copy of the GNU General Public License
  20  *  along with GNU Make; see the file COPYING.  If not, write to
  21  *  the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
  22  *
  23  */
  24
  25 #include <mlib_types.h>
  26 #include <mlib_status.h>
  27 #include <mlib_sys.h>
  28 #include <mlib_video.h>
  29 #include <inttypes.h>
  30 #include <stdlib.h>
  31 #include <assert.h>
  32
  33 #include "libvo/img_format.h" //FIXME try to reduce dependency of such stuff
  34 #include "swscale.h"
  35
  36 static int mlib_YUV2ARGB420_32(SwsContext *c, uint8_t* src[], int srcStride[], int srcSliceY,
  37              int srcSliceH, uint8_t* dst[], int dstStride[]){
  38     if(c->srcFormat == IMGFMT_422P){
  39         srcStride[1] *= 2;
  40         srcStride[2] *= 2;
  41     }
  42
  43     assert(srcStride[1] == srcStride[2]);
  44
  45     mlib_VideoColorYUV2ARGB420(dst[0]+srcSliceY*dstStride[0], src[0], src[1], src[2], c->dstW,
  46                              srcSliceH, dstStride[0], srcStride[0], srcStride[1]);
  47     return srcSliceH;
  48 }
  49
  50 static int mlib_YUV2ABGR420_32(SwsContext *c, uint8_t* src[], int srcStride[], int srcSliceY,
  51              int srcSliceH, uint8_t* dst[], int dstStride[]){
  52     if(c->srcFormat == IMGFMT_422P){
  53         srcStride[1] *= 2;
  54         srcStride[2] *= 2;
  55     }
  56
  57     assert(srcStride[1] == srcStride[2]);
  58
  59     mlib_VideoColorYUV2ABGR420(dst[0]+srcSliceY*dstStride[0], src[0], src[1], src[2], c->dstW,
  60                              srcSliceH, dstStride[0], srcStride[0], srcStride[1]);
  61     return srcSliceH;
  62 }
  63
  64 static int mlib_YUV2RGB420_24(SwsContext *c, uint8_t* src[], int srcStride[], int srcSliceY,
  65              int srcSliceH, uint8_t* dst[], int dstStride[]){
  66     if(c->srcFormat == IMGFMT_422P){
  67         srcStride[1] *= 2;
  68         srcStride[2] *= 2;
  69     }
  70
  71     assert(srcStride[1] == srcStride[2]);
  72
  73     mlib_VideoColorYUV2RGB420(dst[0]+srcSliceY*dstStride[0], src[0], src[1], src[2], c->dstW,
  74                              srcSliceH, dstStride[0], srcStride[0], srcStride[1]);
  75     return srcSliceH;
  76 }
  77
  78
  79 SwsFunc yuv2rgb_init_mlib(SwsContext *c)
  80 {
  81         switch(c->dstFormat){
  82         case IMGFMT_RGB24: return mlib_YUV2RGB420_24;
  83         case IMGFMT_RGB32: return mlib_YUV2ARGB420_32;
  84         case IMGFMT_BGR32: return mlib_YUV2ABGR420_32;
  85         default: return NULL;
  86         }
  87 }
  88