Change #264276

Comments

avcodec/snowdata: Don't use 8 bits for six bits data
This has been done in 561a18d3ba07382dffdf583dda13f6954109b116
in order to avoid shifts, yet this rationale no longer applies
since d593e329832a432777218eb92469bad10594a3c5. So shift them back;
this is in preparation for using these coefficients together with
pmaddubsw.

Hint: 561a18d3ba07382dffdf583dda13f6954109b116 also added a block
guarded by "if(LOG2_OBMC_MAX == 8". I changed the condition to remove
this check (i.e. kept the block) which should not change the output
at all. Yet all FATE tests pass if the block is completely
removed. I don't know if this block is necessary at all.

Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>

Changed files

• libavcodec/snow.c
• libavcodec/snow.h
• libavcodec/snowdata.h
• libavcodec/snowenc.c
• libavcodec/x86/snowdsp.c