From 94c520bf3df0c0e0b436d7c9a2e4b0b40550a453 Mon Sep 17 00:00:00 2001 From: Kostya Shishkov Date: Sat, 9 Sep 2023 09:33:36 +0200 Subject: [PATCH] core/scale: support copying paletted frames --- nihav-core/src/scale/mod.rs | 24 ++++++++++++++++++++++++ 1 file changed, 24 insertions(+) diff --git a/nihav-core/src/scale/mod.rs b/nihav-core/src/scale/mod.rs index 4fbf3e6..c11d875 100644 --- a/nihav-core/src/scale/mod.rs +++ b/nihav-core/src/scale/mod.rs @@ -159,6 +159,30 @@ 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()) { + if sbuf.get_info().get_format().is_paletted() { + let same = sbuf.get_stride(0) == dbuf.get_stride(0) && sbuf.get_offset(1) == dbuf.get_offset(1); + if same { + let src = sbuf.get_data(); + let dst = dbuf.get_data_mut().unwrap(); + dst.copy_from_slice(src); + } else { + let (_, h) = sbuf.get_dimensions(0); + let soff = sbuf.get_offset(0); + let spoff = sbuf.get_offset(1); + let sstride = sbuf.get_stride(0); + let src = sbuf.get_data(); + let doff = dbuf.get_offset(0); + let dpoff = dbuf.get_offset(1); + let dstride = dbuf.get_stride(0); + let dst = dbuf.get_data_mut().unwrap(); + let copy_size = sstride.min(dstride); + for (dline, sline) in dst[doff..].chunks_exact_mut(dstride).take(h).zip(src[soff..].chunks_exact(sstride)) { + dline[..copy_size].copy_from_slice(&sline[..copy_size]); + } + dst[dpoff..].copy_from_slice(&src[spoff..]); + } + return; + } let mut same = true; let num_components = sbuf.get_info().get_format().get_num_comp(); for i in 0..num_components { -- 2.39.5