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commit 8a6027a54f3a60361a664acb5942d275ab4008a9 Author: Niklas Haas <[email protected]> AuthorDate: Tue Jun 2 12:27:21 2026 +0200 Commit: Niklas Haas <[email protected]> CommitDate: Tue Jun 2 15:37:54 2026 +0200 swscale/x86/ops_int: fix write_bits over-write This writes 4 bytes but in SSE4 mode only produces 2 bytes per vector. We can avoid over-writing by using the appropriately sized register. Reproducible by: make libswscale/tests/swscale libswscale/tests/swscale -dst monob -unscaled 1 -flags unstable -align_src 1 -align_dst 1 Signed-off-by: Niklas Haas <[email protected]> --- libswscale/x86/ops_int.asm | 7 ++++++- 1 file changed, 6 insertions(+), 1 deletion(-) diff --git a/libswscale/x86/ops_int.asm b/libswscale/x86/ops_int.asm index 55534d4f4b..07ee13ecfe 100644 --- a/libswscale/x86/ops_int.asm +++ b/libswscale/x86/ops_int.asm @@ -495,8 +495,13 @@ IF V2, psllw mx2, 7 IF V2, pshufb mx2, m8 pmovmskb tmp0d, mx IF V2, pmovmskb tmp1d, mx2 - mov [out0q], tmp0d +%if mmsize >= 32 + mov [out0q], tmp0d IF V2, mov [out0q + (mmsize >> 3)], tmp1d +%else + mov [out0q], tmp0w +IF V2, mov [out0q + (mmsize >> 3)], tmp1w +%endif add out0q, (mmsize >> 3) * (1 + V2) RET %endmacro _______________________________________________ ffmpeg-cvslog mailing list -- [email protected] To unsubscribe send an email to [email protected]
