virtualenv/FFmpeg
1
0
Fork 0
mirror of https://github.com/FFmpeg/FFmpeg.git synced 2025-08-04 22:03:09 +02:00
Code Issues Releases Activity
120,502 Commits 37 Branches 405 Tags
master
Commit Graph

4 Commits

Author SHA1 Message Date
Michael Niedermayer
b2858d462d avcodec/apv_dsp: Avoid UB overflow in dequant 
Fixes: signed integer overflow: 33632416 * 64 cannot be represented in type 'int'
Fixes: 421817631/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_APV_fuzzer-4957386534354944

Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
 2025-07-06 19:20:24 +02:00
Andreas Rheinhardt
0b588bfb51 avcodec/apv_dsp: Fix left-shift of negative value 
Reviewed-by: Mark Thompson <sw@jkqxz.net>
Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
 2025-04-30 23:38:21 +02:00
Mark Thompson
d03c99441d lavc/apv: AVX2 transquant for x86-64 
Typical checkasm result on Alder Lake:

decode_transquant_8_c:                                 464.2 ( 1.00x)
decode_transquant_8_avx2:                               86.2 ( 5.38x)
decode_transquant_10_c:                                481.6 ( 1.00x)
decode_transquant_10_avx2:                              83.5 ( 5.77x)
 2025-04-27 15:52:30 +01:00
Mark Thompson
483cadf8d7 lavc: APV decoder 2025-04-27 15:52:30 +01:00