libswscale/mlib/yuv2rgb_mlib.c

   1 /*
   2  * software YUV to RGB converter using mediaLib
   3  *
   4  * Copyright (C) 2003 Michael Niedermayer <michaelni@gmx.at>
   5  *
   6  * This file is part of FFmpeg.
   7  *
   8  * FFmpeg is free software; you can redistribute it and/or
   9  * modify it under the terms of the GNU Lesser General Public
  10  * License as published by the Free Software Foundation; either
  11  * version 2.1 of the License, or (at your option) any later version.
  12  *
  13  * FFmpeg is distributed in the hope that it will be useful,
  14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  16  * Lesser General Public License for more details.
  17  *
  18  * You should have received a copy of the GNU Lesser General Public
  19  * License along with FFmpeg; if not, write to the Free Software
  20  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
  21  */
  22
  23 #include <mlib_types.h>
  24 #include <mlib_status.h>
  25 #include <mlib_sys.h>
  26 #include <mlib_video.h>
  27 #include <inttypes.h>
  28 #include <stdlib.h>
  29 #include <assert.h>
  30
  31 #include "libswscale/swscale.h"
  32
  33 static int mlib_YUV2ARGB420_32(SwsContext *c, uint8_t* src[], int srcStride[], int srcSliceY,
  34                                int srcSliceH, uint8_t* dst[], int dstStride[]){
  35     if(c->srcFormat == PIX_FMT_YUV422P){
  36         srcStride[1] *= 2;
  37         srcStride[2] *= 2;
  38     }
  39
  40     assert(srcStride[1] == srcStride[2]);
  41
  42     mlib_VideoColorYUV2ARGB420(dst[0]+srcSliceY*dstStride[0], src[0], src[1], src[2], c->dstW,
  43                                srcSliceH, dstStride[0], srcStride[0], srcStride[1]);
  44     return srcSliceH;
  45 }
  46
  47 static int mlib_YUV2ABGR420_32(SwsContext *c, uint8_t* src[], int srcStride[], int srcSliceY,
  48                                int srcSliceH, uint8_t* dst[], int dstStride[]){
  49     if(c->srcFormat == PIX_FMT_YUV422P){
  50         srcStride[1] *= 2;
  51         srcStride[2] *= 2;
  52     }
  53
  54     assert(srcStride[1] == srcStride[2]);
  55
  56     mlib_VideoColorYUV2ABGR420(dst[0]+srcSliceY*dstStride[0], src[0], src[1], src[2], c->dstW,
  57                                srcSliceH, dstStride[0], srcStride[0], srcStride[1]);
  58     return srcSliceH;
  59 }
  60
  61 static int mlib_YUV2RGB420_24(SwsContext *c, uint8_t* src[], int srcStride[], int srcSliceY,
  62                               int srcSliceH, uint8_t* dst[], int dstStride[]){
  63     if(c->srcFormat == PIX_FMT_YUV422P){
  64         srcStride[1] *= 2;
  65         srcStride[2] *= 2;
  66     }
  67
  68     assert(srcStride[1] == srcStride[2]);
  69
  70     mlib_VideoColorYUV2RGB420(dst[0]+srcSliceY*dstStride[0], src[0], src[1], src[2], c->dstW,
  71                               srcSliceH, dstStride[0], srcStride[0], srcStride[1]);
  72     return srcSliceH;
  73 }
  74
  75
  76 SwsFunc ff_yuv2rgb_init_mlib(SwsContext *c)
  77 {
  78     switch(c->dstFormat){
  79     case PIX_FMT_RGB24: return mlib_YUV2RGB420_24;
  80     case PIX_FMT_BGR32: return mlib_YUV2ARGB420_32;
  81     case PIX_FMT_RGB32: return mlib_YUV2ABGR420_32;
  82     default: return NULL;
  83     }
  84 }
  85