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add SSE2 functions. ~2x faster encoding on average.

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For now, SSE2 functions are compiled a-minima: only on platforms
where __SSE2__ is defined. Let's later add some autoconf-based
config to enable/disable at will.

One can disable SSE2 at run-time by hooking-up VP8GetInfo.
There is a new option "-noasm" in cwebp for that.
Output should be binary the same between C and SSE2 version. If not,
that's a bug!

patch by Christian Duvivier (cduvivier at google dot com)

Change-Id: Iae006c3cdcb7e8280e846cedb94d239dab1e42ae
This commit is contained in:
Pascal Massimino
2011-04-22 12:14:45 -07:00
parent e7ff3f9af6
commit cfbf88a6c4
7 changed files with 680 additions and 31 deletions
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2
src/enc/Makefile.am
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@ -1,7 +1,7 @@
AM_CPPFLAGS = -I$(top_srcdir)/src
libwebpencode_la_SOURCES = analysis.c bit_writer.c bit_writer.h \
config.c cost.c cost.h dsp.c filter.c \
config.c cost.c cost.h dsp.c dsp_sse2.c filter.c \
frame.c iterator.c picture.c quant.c \
syntax.c tree.c vp8enci.h webpenc.c
libwebpencode_la_LDFLAGS = -version-info 0:0:0 -lm