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commit 1e071c8585467539d48cb33f239811309eed46a0 Author: Niklas Haas <[email protected]> AuthorDate: Tue Feb 10 14:58:28 2026 +0100 Commit: Niklas Haas <[email protected]> CommitDate: Mon Feb 23 19:39:17 2026 +0000 swscale/graph: omit memcpy() if src and dst are identical This allows already referenced planes to be skipped, in the case of e.g. only some of the output planes being sucessfully referenced. Also avoids what is technically UB, if the user happens to call ff_sws_graph_run() after already having ref'd an image. Signed-off-by: Niklas Haas <[email protected]> --- libswscale/graph.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/libswscale/graph.c b/libswscale/graph.c index 2d07c4bb06..b44964e625 100644 --- a/libswscale/graph.c +++ b/libswscale/graph.c @@ -152,7 +152,9 @@ static void run_copy(const SwsImg *out_base, const SwsImg *in_base, const int lines = h >> ff_fmt_vshift(in.fmt, i); av_assert1(in.data[i]); - if (in.linesize[i] == out.linesize[i]) { + if (in.data[i] == out.data[i]) { + av_assert0(in.linesize[i] == out.linesize[i]); + } else if (in.linesize[i] == out.linesize[i]) { memcpy(out.data[i], in.data[i], lines * out.linesize[i]); } else { const int linesize = FFMIN(out.linesize[i], in.linesize[i]); _______________________________________________ ffmpeg-cvslog mailing list -- [email protected] To unsubscribe send an email to [email protected]
