Patch provide on the same License of x264, on purpose to avoid creating problems
and the x264 authors can modify it as they wish

Anton Mitrofanov authored 4 years ago and Anton Mitrofanov committed 4 years ago

Bug report by Zhengzhi Duan.

Make pointers to padded buffers aligned both before and after padding.

In 10-bit mode pixel_asd8 expects 16-byte alignment for pix1 and pix2.

It's not required, and BSD doesn't support it.

Anton Mitrofanov authored 4 years ago and Anton Mitrofanov committed 4 years ago

Broke after unifying of 8-bit and 10-bit libraries.

Anton Mitrofanov authored 4 years ago and Anton Mitrofanov committed 4 years ago

This bug never occurs with the current reference management logic.
Bug report by Lingjiang Fang.

Anton Mitrofanov authored 4 years ago and Anton Mitrofanov committed 4 years ago

This bug mainly occurred when encoding with high bitrate (low QP).
It did not occur when encoding in baseline or main profile.

It became unused in cde9a933.

0.5% - 2% overall speedup on
`./x264 --threads X --profile high --preset veryfast --crf 15 -o /dev/null park_joy_420_720p50.y4m`
cabac is responsible for roughly 1/6 of the CPU use.
Branch mispredictions are reduced by 15% to 20%.

cortex-s53: 0.5% faster
cortex-a72: 2%  faster
neoverse-n1: 0.9% faster

Imported from dav1d.

Approach taken from x86 asm. Overall speedup meaningless.
cabac_encode_terminal on average twice as fast on cortex-53 while
encoding with following command:
./x264 --threads 1 --profile high --preset veryfast --crf 15 -o /dev/null park_joy_420_720p50.y4m

Less relative speedup on cortex-a72/73.

Since 7ab4c928, osdep.h contains
calls to malloc/free.

This fixes building with MSVC targeting WinRT.

GPAC has native UTF-8 support nowadays.

Also move the compatibility code to input/avs.c since that's the only
remaining code that uses it now.

Should be called to free struct members allocated internally by libx264,
e.g. by x264_param_parse.
Partially based on !18 by Derek Buitenhuis.

Anton Mitrofanov authored 5 years ago and Anton Mitrofanov committed 4 years ago

Currently they are guaranteed to be positive.