图像格式转换-cross-plannar

/**************************************************************************************************/
/* func: change the cross to the plannar format
/**************************************************************************************************/
/*            src                 -I    the rgb rgb image 
*             dst                 -O    the rr..gg..bb  image 
*             width               -I    the width of the image
*             height              -I    the height of the image
*             channel             -I    the channel of the image
** note:
*/
void TEST_Cross2Plannar(U08 *src, U08 *dst, S32 width, S32 height ,S32 channel)
{
    S32 mem_size       =  channel * width * height;
    S32 single_size    =  width * height;
    S32 cross_count          =  0;
    S32 plannar_count        =  0;
    S32 channel_c      =  0;

    for (cross_count = 0; cross_count < mem_size; cross_count+= channel)
    {
        for (channel_c = 0; channel_c < channel; channel_c++)
        {
              dst[plannar_count + channel_c * single_size] = src[cross_count + channel_c];
        }
        plannar_count++;
    }
}