Change #254083

Category	ffmpeg
Changed by	Zhao Zhili <zhilizhaoohnoyoudont@tencent.com>
Changed at	Sun 04 Jan 2026 04:22:55
Repository	https://git.ffmpeg.org/ffmpeg.git
Project	ffmpeg
Branch	master
Revision	840183d823788306adb30153183614c3769bf6d3

Comments

aarch64/hpeldsp_neon: fix out-of-bounds read
Fix #21141

The performance improved a little bit.
On A76:
                              Before            After
put_pixels_tab[0][1]_neon:    32.4 ( 3.91x)     31.6 ( 3.99x)
put_pixels_tab[0][3]_neon:    88.0 ( 4.50x)     74.6 ( 5.31x)
put_pixels_tab[1][1]_neon:    33.5 ( 2.52x)     31.2 ( 2.71x)
put_pixels_tab[1][3]_neon:    30.5 ( 3.61x)     21.7 ( 5.08x)

On A55:
                             Before            After
put_pixels_tab[0][1]_neon:   175.2 ( 2.41x)    138.7 ( 3.04x)
put_pixels_tab[0][3]_neon:   334.3 ( 2.71x)    296.1 ( 3.07x)
put_pixels_tab[1][1]_neon:   168.3 ( 1.78x)     94.1 ( 3.19x)
put_pixels_tab[1][3]_neon:   112.3 ( 2.20x)     90.0 ( 2.74x)

Changed files

libavcodec/aarch64/hpeldsp_neon.S