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NEON optimised yuv to rgb conversion

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- along the lines of the SSE chroma upsampling.
Total speedup is ~30%.

4% speed loss on YuvToRgbXX conversion using tables instead
of 14-bit fixed precision. TODO(later): investigate, and compare
to x86.

see http://code.google.com/p/webp/issues/detail?id=134

Change-Id: Idc2261037cd13b4553ca20ecc4c4007099c37009
This commit is contained in:
Mans Rullgard
2013-01-17 18:06:26 -08:00
committed by Johann
parent 126c035f3f
commit 090b708a00
6 changed files with 290 additions and 0 deletions
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src/dsp/Makefile.am
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@ -14,6 +14,7 @@ COMMON_SOURCES += dsp.h
COMMON_SOURCES += lossless.c
COMMON_SOURCES += lossless.h
COMMON_SOURCES += upsampling.c
COMMON_SOURCES += upsampling_neon.c
COMMON_SOURCES += upsampling_sse2.c
COMMON_SOURCES += yuv.c
COMMON_SOURCES += yuv.h