Henrik Gramner authored Jun 23, 2015 and Anton Mitrofanov committed Jul 25, 2015

 * Fix unsigned <= 0 check.
 * Add additional size sanity check on 32-bit systems.
 * Don't read uninitialized data if fread() fails.

Patch written by Koop Mast <kwm@FreeBSD.org>

Henrik Gramner authored May 22, 2015 and Anton Mitrofanov committed Jul 17, 2015

Could only occur in 4:2:2 with height == 1.

Also enable asm for inputs with different U/V strides as long as the strides
have identical signs.

Defined in 2014-02 edition.

Vittorio Giovara authored Jan 20, 2015 and Anton Mitrofanov committed Feb 23, 2015

Defined in 2013-04 edition.

Christophe Gisquet authored Feb 03, 2015 and Anton Mitrofanov committed Feb 23, 2015

SSE2 instructions that are XMM-implementations of pre-existing MMX/MMX2
instructions did not issue warnings when used in SSE functions. Handle
it by also checking the register type when such instructions are used.

Vittorio Giovara authored Jan 20, 2015 and Anton Mitrofanov committed Feb 23, 2015

According to the specifications, when stereo mode is set, these values
represent the single view size.

Kieran Kunhya authored Jan 20, 2015 and Anton Mitrofanov committed Feb 23, 2015

Based on a patch from Capella Systems

They were caused by integer overflow when encoding long UHD video.

Also known as --aq-mode 3 or auto-variance AQ modification.

Henrik Gramner authored Nov 28, 2014 and Anton Mitrofanov committed Dec 20, 2014

Also remove the MMX2 implementation and fix src overread for height == 1.

Update to the latest version of gas-preprocessor.pl from http://git.libav.org/?p=gas-preprocessor.git

Contributions by Janne Grunau, Martin Storsjo, Mans Rullgard, David Conrad, Martin Aumuller and others

Janne Grunau authored Nov 19, 2014 and Anton Mitrofanov committed Dec 16, 2014

benchmarks on a Nexus 9 (nvidia denver):
101.3 cycles in x264_cabac_encode_decision_c,   67105369 runs, 3495 skips
 97.3 cycles in x264_cabac_encode_decision_asm, 67105493 runs, 3371 skips
132.8 cycles in x264_cabac_encode_terminal_c,    1046950 runs, 1626 skips
116.1 cycles in x264_cabac_encode_terminal_asm,  1048424 runs, 152 skips
 92.4 cycles in x264_cabac_encode_bypass_c,     16776192 runs, 1024 skips
 89.6 cycles in x264_cabac_encode_bypass_asm,   16776453 runs, 763 skips

Cycle counts are not as stable as one would like. The dynamic code
optimisation seems to produce different results for small chnages in a
binary. Repeated runs with the same binary produce stable results
though (ignoring the first run).

Janne Grunau authored Nov 06, 2014 and Anton Mitrofanov committed Dec 16, 2014

Needs kernel support since user space access to the cycle counter is not
allowed on all available AArch64 systems (Android 5 and iOS).

Janne Grunau authored Nov 05, 2014 and Anton Mitrofanov committed Dec 16, 2014

3-4 times faster.

Janne Grunau authored Oct 31, 2014 and Anton Mitrofanov committed Dec 16, 2014

2-3 times faster than C.

Janne Grunau authored Oct 29, 2014 and Anton Mitrofanov committed Dec 16, 2014

x264_mbtree_propagate_cost_neon is ~7 times faster.
x264_mbtree_propagate_list_neon is 33% faster.

Janne Grunau authored Oct 21, 2014 and Anton Mitrofanov committed Dec 16, 2014

3.5 times faster.

Janne Grunau authored Oct 20, 2014 and Anton Mitrofanov committed Dec 16, 2014

All functions ~33% faster.