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 #include "libswscale/swscale_internal.h"
  33
  34 static int mlib_YUV2ARGB420_32(SwsContext *c, uint8_t* src[], int srcStride[], int srcSliceY,
  35                                int srcSliceH, uint8_t* dst[], int dstStride[])
  36 {
  37     if(c->srcFormat == PIX_FMT_YUV422P) {
  38         srcStride[1] *= 2;
  39         srcStride[2] *= 2;
  40     }
  41
  42     assert(srcStride[1] == srcStride[2]);
  43
  44     mlib_VideoColorYUV2ARGB420(dst[0]+srcSliceY*dstStride[0], src[0], src[1], src[2], c->dstW,
  45                                srcSliceH, dstStride[0], srcStride[0], srcStride[1]);
  46     return srcSliceH;
  47 }
  48
  49 static int mlib_YUV2ABGR420_32(SwsContext *c, uint8_t* src[], int srcStride[], int srcSliceY,
  50                                int srcSliceH, uint8_t* dst[], int dstStride[])
  51 {
  52     if(c->srcFormat == PIX_FMT_YUV422P) {
  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 {
  67     if(c->srcFormat == PIX_FMT_YUV422P) {
  68         srcStride[1] *= 2;
  69         srcStride[2] *= 2;
  70     }
  71
  72     assert(srcStride[1] == srcStride[2]);
  73
  74     mlib_VideoColorYUV2RGB420(dst[0]+srcSliceY*dstStride[0], src[0], src[1], src[2], c->dstW,
  75                               srcSliceH, dstStride[0], srcStride[0], srcStride[1]);
  76     return srcSliceH;
  77 }
  78
  79
  80 SwsFunc ff_yuv2rgb_init_mlib(SwsContext *c)
  81 {
  82     switch(c->dstFormat) {
  83     case PIX_FMT_RGB24: return mlib_YUV2RGB420_24;
  84     case PIX_FMT_BGR32: return mlib_YUV2ARGB420_32;
  85     case PIX_FMT_RGB32: return mlib_YUV2ABGR420_32;
  86     default: return NULL;
  87     }
  88 }
  89