YUV420SP数据转换成YUV420P代码

最新推荐文章于 2019-07-12 09:40:32 发布

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最新推荐文章于 2019-07-12 09:40:32 发布

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文章标签： byte null 存储

本文链接：https://blog.youkuaiyun.com/hai__feng/article/details/7758122

数据存储方式：

YYYYYYYYYYYYY                                YYYYYYYYYYYYY
YYYYYYYYYYYYY         -->            YYYYYYYYYYYYY

CbCrCbCr ....                                           CbCb...CrCr......

转换函数

void YUV420SPToYUV420P ( BYTE * yuv420sp, BYTE * yuv420, int width, int height )

{

int PixelsCount = width * height;
int i = 0, j= 0;

   if (yuv420sp== NULL || yuv420 == NULL)
   {
           return;
   }

    //copy Y
    for (i = 0; i < PixelsCount; i++)
    {
       *(yuv420 +i) = *(yuv420sp + i);
    }

    //copy Cb(U)
    i = 0;
    for (j = 0; j < PixelsCount / 2; j+=2)
    {
       *(yuv420 + (i + PixelsCount)) = *(yuv420sp + (j + PixelsCount));
       i++;
    }

    //copy Cr(V)
    i = 0;
    for(j = 1; j < PixelsCount/2; j+=2)
    {
       *(yuv420 +(i+PixelsCount * 5/4)) = *(yuv420sp + (j + PixelsCount));
       i++;
    }
}