From 79ec1d51391cccce3c8ca2d4ea7e640cc78f0ee6 Mon Sep 17 00:00:00 2001 From: Kostya Shishkov Date: Wed, 27 Nov 2019 15:03:07 +0100 Subject: [PATCH] core/scale: copy pictures with different strides too --- nihav-core/src/scale/mod.rs | 35 ++++++++++++++++++++++++++++++++--- 1 file changed, 32 insertions(+), 3 deletions(-) diff --git a/nihav-core/src/scale/mod.rs b/nihav-core/src/scale/mod.rs index d878c4c..13762bd 100644 --- a/nihav-core/src/scale/mod.rs +++ b/nihav-core/src/scale/mod.rs @@ -123,9 +123,38 @@ fn check_format(in_fmt: NAVideoInfo, ref_fmt: &ScaleInfo, just_convert: bool) -> 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!(); } -- 2.39.5