RepoMirrors
/
ffmpeg
mirror of https://git.ffmpeg.org/ffmpeg.git
1
0
Fork 0
Code Issues Projects Releases Wiki Activity

x86/tx_float: correctly load the transform length 

The field is a standard field, yet we were loading it as if it was
a quadword. This worked for forward transforms by chance, but broke
when the transform was inverse.
checkasm couldn't catch that because we only test forward transforms,
which are identical to inverse transforms but with a different revtab.
This commit is contained in:
Lynne 2021-07-18 15:00:48 +02:00
parent 694545b6d5
commit 997f9bdb99
No known key found for this signature in database
GPG Key ID: A2FEA5F03F034464
1 changed files with 1 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
libavutil/x86/tx_float.asm
View File

@ -884,7 +884,7 @@ ALIGN 16
%macro FFT_SPLIT_RADIX_FN 1
INIT_YMM %1
cglobal split_radix_fft_float, 4, 8, 16, 272, lut, out, in, len, tmp, itab, rtab, tgt
mov lenq, [lutq + AVTXContext.m]
movsxd lenq, dword [lutq + AVTXContext.m]
mov lutq, [lutq + AVTXContext.revtab]
mov tgtq, lenq