fn copy(pic_in: &NABufferType, pic_out: &mut NABufferType)
{
if let (Some(ref sbuf), Some(ref mut dbuf)) = (pic_in.get_vbuf(), pic_out.get_vbuf()) {
- let sdata = sbuf.get_data();
- let ddata = dbuf.get_data_mut().unwrap();
- ddata.copy_from_slice(&sdata[0..]);
+ let mut same = true;
+ let num_components = sbuf.get_info().get_format().get_num_comp();
+ for i in 0..num_components {
+ if sbuf.get_stride(i) != dbuf.get_stride(i) {
+ same = false;
+ break;
+ }
+ if sbuf.get_offset(i) != dbuf.get_offset(i) {
+ same = false;
+ break;
+ }
+ }
+ if same {
+ let sdata = sbuf.get_data();
+ let ddata = dbuf.get_data_mut().unwrap();
+ ddata.copy_from_slice(&sdata[0..]);
+ } else {
+ let sdata = sbuf.get_data();
+ for comp in 0..num_components {
+ let (_, h) = sbuf.get_dimensions(comp);
+ let src = &sdata[sbuf.get_offset(comp)..];
+ let sstride = sbuf.get_stride(comp);
+ let doff = dbuf.get_offset(comp);
+ let dstride = dbuf.get_stride(comp);
+ let ddata = dbuf.get_data_mut().unwrap();
+ let dst = &mut ddata[doff..];
+ let copy_size = sstride.min(dstride);
+ for (dline, sline) in dst.chunks_exact_mut(dstride).take(h).zip(src.chunks_exact(sstride)) {
+ (&mut dline[..copy_size]).copy_from_slice(&sline[..copy_size]);
+ }
+ }
+ }
} else {
unimplemented!();
}