Commit Graph

8 Commits

Author SHA1 Message Date
6752904b2f Speed-up: Make sure we only initialize histograms when needed.
Also, histograms in a HistogramSet can be initialized all
at once.

Change-Id: Ibbfa6034dce58dca8bb9113487e2ae507222ce7d
2018-10-31 11:54:09 +00:00
decf6f6b87 Speedups for empty histograms.
When histograms are empty, it is easy to add them.
They should also not be considered when merging histograms
(it is a waste of CPU).
This does not change the compression performance,
just the speed.

Change-Id: I42c721ca0f9c5ea067e73b792aa3db6d5e71d01f
2018-10-20 13:23:50 +02:00
551948e45f Remove unused argument in VP8LBitsEntropy.
The function is only used once and does not use the extra argument.

Change-Id: I9735383784746cb02b5a643b7a4a2037f2874bf9
2018-02-16 16:05:28 +01:00
5cfb3b0f6c normalize include guards
some fell out of sync after:
668e1dd4 src/{dec,enc,utils}: give filenames a unique suffix

Change-Id: I280d3b3f44797f3bfb4835784add50a41cdd3793
2017-10-21 00:06:23 -07:00
a439972175 WIP: list includes as descendants of the project dir
#include "(.|..)/..." -> #include "src/..."

Change-Id: I772880aa097a770722043c8a4393552ba38a89b6
2017-10-10 23:04:05 -07:00
f209a5481e Use the plane code and not the distance when computing statistics.
As backward references use the plane code when checking the cost
of a distance, statistics used to compute the cost should use it too.
This provides a small compression improvement at no speed cost.

Change-Id: Icade150929ee39ef6dc0d8b1fc85973086ecf41d
2017-06-01 17:08:43 +02:00
833c92198c More efficient stochastic histogram merge.
Between each iteration we keep track of the previously found
potential merge hence less work to do.

Change-Id: I2b6237447e79443516a6111727d96c24f10bd98a
2017-02-23 14:35:33 +01:00
668e1dd44f src/{dec,enc,utils}: give filenames a unique suffix
this avoids duplicates between these trees and dsp/, e.g., enc/tree.c,
dec/tree.c, making pulling the whole library source tree into one target
possible

BUG=webp:279

Change-Id: I060a614833c7c24ddd37bf641702ae6a5eef1775
2017-01-19 19:09:48 -08:00