yuv2rgb_mlib.c

   1 /*
   2  * yuv2rgb_mlib.c, Software YUV to RGB converter using mediaLib
   3  * Copyright (C) 2003 Michael Niedermayer <michaelni@gmx.at>
   4  *
   5  * This file is part of FFmpeg.
   6  *
   7  * FFmpeg is free software; you can redistribute it and/or
   8  * modify it under the terms of the GNU Lesser General Public
   9  * License as published by the Free Software Foundation; either
  10  * version 2.1 of the License, or (at your option) any later version.
  11  *
  12  * FFmpeg is distributed in the hope that it will be useful,
  13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  15  * Lesser General Public License for more details.
  16  *
  17  * You should have received a copy of the GNU Lesser General Public
  18  * License along with FFmpeg; if not, write to the Free Software
  19  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
  20  */
  21
  22 #include <mlib_types.h>
  23 #include <mlib_status.h>
  24 #include <mlib_sys.h>
  25 #include <mlib_video.h>
  26 #include <inttypes.h>
  27 #include <stdlib.h>
  28 #include <assert.h>
  29
  30 #include "swscale.h"
  31
  32 static int mlib_YUV2ARGB420_32(SwsContext *c, uint8_t* src[], int srcStride[], int srcSliceY,
  33                                int srcSliceH, uint8_t* dst[], int dstStride[]){
  34     if(c->srcFormat == PIX_FMT_YUV422P){
  35         srcStride[1] *= 2;
  36         srcStride[2] *= 2;
  37     }
  38
  39     assert(srcStride[1] == srcStride[2]);
  40
  41     mlib_VideoColorYUV2ARGB420(dst[0]+srcSliceY*dstStride[0], src[0], src[1], src[2], c->dstW,
  42                                srcSliceH, dstStride[0], srcStride[0], srcStride[1]);
  43     return srcSliceH;
  44 }
  45
  46 static int mlib_YUV2ABGR420_32(SwsContext *c, uint8_t* src[], int srcStride[], int srcSliceY,
  47                                int srcSliceH, uint8_t* dst[], int dstStride[]){
  48     if(c->srcFormat == PIX_FMT_YUV422P){
  49         srcStride[1] *= 2;
  50         srcStride[2] *= 2;
  51     }
  52
  53     assert(srcStride[1] == srcStride[2]);
  54
  55     mlib_VideoColorYUV2ABGR420(dst[0]+srcSliceY*dstStride[0], src[0], src[1], src[2], c->dstW,
  56                                srcSliceH, dstStride[0], srcStride[0], srcStride[1]);
  57     return srcSliceH;
  58 }
  59
  60 static int mlib_YUV2RGB420_24(SwsContext *c, uint8_t* src[], int srcStride[], int srcSliceY,
  61                               int srcSliceH, uint8_t* dst[], int dstStride[]){
  62     if(c->srcFormat == PIX_FMT_YUV422P){
  63         srcStride[1] *= 2;
  64         srcStride[2] *= 2;
  65     }
  66
  67     assert(srcStride[1] == srcStride[2]);
  68
  69     mlib_VideoColorYUV2RGB420(dst[0]+srcSliceY*dstStride[0], src[0], src[1], src[2], c->dstW,
  70                               srcSliceH, dstStride[0], srcStride[0], srcStride[1]);
  71     return srcSliceH;
  72 }
  73
  74
  75 SwsFunc yuv2rgb_init_mlib(SwsContext *c)
  76 {
  77     switch(c->dstFormat){
  78     case PIX_FMT_RGB24: return mlib_YUV2RGB420_24;
  79     case PIX_FMT_BGR32: return mlib_YUV2ARGB420_32;
  80     case PIX_FMT_RGB32: return mlib_YUV2ABGR420_32;
  81     default: return NULL;
  82     }
  83 }
  84