ffmpeg | branch: release/2.4 | Ronald S. Bultje <rsbul...@gmail.com> | Fri Oct 23 11:11:53 2015 -0400| [d3af86c867c709dadaf4caa472b9d5c3d6b9a841] | committer: Carl Eugen Hoyos
videodsp: don't overread edges in vfix3 emu_edge. Fixes trac ticket 3226. Also see Andreas' analysis in https://bugs.debian.org/801745, which was very helpful. (cherry picked from commit 52f84d82bdf1851ecfcc412c1719e5f6f3396209) > http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=d3af86c867c709dadaf4caa472b9d5c3d6b9a841 --- libavcodec/x86/videodsp.asm | 15 +++++++++++---- 1 file changed, 11 insertions(+), 4 deletions(-) diff --git a/libavcodec/x86/videodsp.asm b/libavcodec/x86/videodsp.asm index 1ac0257..77189fa 100644 --- a/libavcodec/x86/videodsp.asm +++ b/libavcodec/x86/videodsp.asm @@ -185,8 +185,12 @@ hvar_fn %elif (%2-%%off) == 2 mov valw, [srcq+%2-2] %elifidn %1, body - mov vald, [srcq+%2-3] -%else + mov valb, [srcq+%2-1] + sal vald, 16 + mov valw, [srcq+%2-3] +%elifidn %1, bottom + movd mm %+ %%mmx_idx, [srcq+%2-4] +%else ; top movd mm %+ %%mmx_idx, [srcq+%2-3] %endif %endif ; (%2-%%off) >= 1 @@ -242,12 +246,15 @@ hvar_fn mov [dstq+%2-2], valw %elifidn %1, body mov [dstq+%2-3], valw - shr vald, 16 + sar vald, 16 mov [dstq+%2-1], valb %else movd vald, mm %+ %%mmx_idx +%ifidn %1, bottom + sar vald, 8 +%endif mov [dstq+%2-3], valw - shr vald, 16 + sar vald, 16 mov [dstq+%2-1], valb %endif %endif ; (%2-%%off) >= 1 _______________________________________________ ffmpeg-cvslog mailing list ffmpeg-cvslog@ffmpeg.org http://ffmpeg.org/mailman/listinfo/ffmpeg-cvslog
