hi,all:
I see the follow way to use DAT_copy to copy video data in YUV422 formation
for(i = 0; i < VideoHeight; i ++)
{
DAT_copy(capFrameBuf->frame.iFrm.y1 + i * VideoWidth,
disFrameBuf->frame.iFrm.y1 + i * VideoWidth,
VideoWidth);
DAT_copy(capFrameBuf->frame.iFrm.cb1 + i * (VideoWidth >> 1),
disFrameBuf->frame.iFrm.cb1 + i * (VideoWidth >> 1),
VideoWidth>>1);
DAT_copy(capFrameBuf->frame.iFrm.cr1 + i * (VideoWidth >> 1),
disFrameBuf->frame.iFrm.cr1 + i * (VideoWidth >> 1),
VideoWidth>>1);
}
so my question is why to copy only one line data using DAT_copy,
for example
DAT_copy(capFrameBuf->frame.iFrm.y1, disFrameBuf->frame.iFrm.y1, VideoWidth* VideoHeight);
here VideoHeight=576, VideoWidth=704;
the maximum of 65,535 bytes may be copied each time, or some other reasons.
in my opinion, DAT_copy(capFrameBuf->frame.iFrm.y1, disFrameBuf->frame.iFrm.y1, VideoWidth* VideoHeight) will run faster.
And in spru401i.pdf, it dosen't give the maximum of 65,535 bytes for dm642.
thanks!