ffmpeg | branch: master | Rémi Denis-Courmont <r...@remlab.net> | Sat May 25 21:09:26 2024 +0300| [e6b38c944f0ed1f28f78fcf0055708c7d208db07] | committer: Rémi Denis-Courmont
lavc/sbrdsp: fix potential overflow in noise table Since the SBR noise application optimisations are currently restricted to hardware with 128-bit vectors, and use a quadruple multipler, they can load up to 16 32-bit elements. But the "loads" are of 2 segments, or 16 pairs of single precision float. Thus we need to expand the dupiclated section of the noise table from 2x8 to 2x16 to avoid overflows. > http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=e6b38c944f0ed1f28f78fcf0055708c7d208db07 --- libavcodec/sbrdsp_template.c | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/libavcodec/sbrdsp_template.c b/libavcodec/sbrdsp_template.c index 80d535cbfa..0f731ba50d 100644 --- a/libavcodec/sbrdsp_template.c +++ b/libavcodec/sbrdsp_template.c @@ -371,4 +371,10 @@ const attribute_visibility_hidden DECLARE_ALIGNED(16, INTFLOAT, AAC_RENAME(ff_sb {Q31( 0.14130051758487f), Q31(-0.95090983575689f)}, {Q31(-0.47005496701697f), Q31(-0.37340549728647f)}, {Q31( 0.80705063769351f), Q31( 0.29653668284408f)}, {Q31(-0.38981478896926f), Q31( 0.89572605717087f)}, {Q31(-0.01053049862020f), Q31(-0.66959058036166f)}, {Q31(-0.91266367957293f), Q31(-0.11522938140034f)}, +#if ARCH_RISCV +{Q31( 0.54840422910309f), Q31( 0.75221367176302f)}, {Q31( 0.40009252867955f), Q31(-0.98929400334421f)}, +{Q31(-0.99867974711855f), Q31(-0.88147068645358f)}, {Q31(-0.95531076805040f), Q31( 0.90908757154593f)}, +{Q31(-0.45725933317144f), Q31(-0.56716323646760f)}, {Q31(-0.72929675029275f), Q31(-0.98008272727324f)}, +{Q31( 0.75622801399036f), Q31( 0.20950329995549f)}, {Q31( 0.07069442601050f), Q31(-0.78247898470706f)}, +#endif }; _______________________________________________ ffmpeg-cvslog mailing list ffmpeg-cvslog@ffmpeg.org https://ffmpeg.org/mailman/listinfo/ffmpeg-cvslog To unsubscribe, visit link above, or email ffmpeg-cvslog-requ...@ffmpeg.org with subject "unsubscribe".
