Re: convert from YUV420P TO YUV411

Hi,

I don't have a code exactly for YUV411, but you can reference to thisone, which is converting planar YUV420P to packed YUV422 (that's verysimular for YUV411):

static void yuv420p_to_yuv422(UINT8 *yuv422, UINT8 *lum, UINT8 *cb,UINT8 *cr, int width, int height)

{
int x, y;
UINT8 *dest = yuv422;

   for(y = 0; y < height; y += 2)
   {
       //odd line

for(x = 0; x < width; x += 2)

       {
           dest[0] = lum[0];
           dest[1] = cb[0];
           dest[2] = lum[1];
           dest[3] = cr[0];

           dest += 4;
           lum += 2;
           cb++;
           cr++;
           }

//even lines; Cb and Cr duplicatedcb = cb - width/2;

       cr = cr - width/2;

       for(x = 0; x < width; x += 2)
       {

dest[0] = lum[0];

           dest[1] = cb[0];
           dest[2] = lum[1];
           dest[3] = cr[0];

           dest += 4;
           lum += 2;
           cb++;
           cr++;
       }
   }
}

Regards,
Yurij


sting sting wrote:

Hello ,

My camera supports VIDEO_PALETTE_YUV420P ;
is there a reliable code for converting the buffe in this format
(grabbed from the camera though v4l API) to YUV411 ?

regards
qwe john

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