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VP8EstimateQuality(): roughty estimate webp bitstream quality factor

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This function returns a rough estimation of the quality factor used
for compressing the WebP bitstream.

Simple command line: 'webp_quality [-quiet] in.webp'
should print the estimated quality factor.

Change-Id: Ifba3e489461f5a587003ac9f08cc7556e9b24ac2
This commit is contained in:
skal
2016-07-20 12:55:05 -07:00
committed by Pascal Massimino
parent fee7b3d6ca
commit e8ab6a825a
5 changed files with 201 additions and 8 deletions
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10
extras/Makefile.am
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@ -5,15 +5,21 @@ noinst_HEADERS =
noinst_HEADERS += ../src/webp/types.h
libwebpextras_la_SOURCES =
libwebpextras_la_SOURCES += extras.c extras.h
libwebpextras_la_SOURCES += extras.c extras.h quality_estimate.c
libwebpextras_la_CPPFLAGS = $(AM_CPPFLAGS)
libwebpextras_la_LIBADD = ../src/libwebp.la
noinst_PROGRAMS = get_disto
noinst_PROGRAMS = get_disto webp_quality
get_disto_SOURCES = get_disto.c
get_disto_CPPFLAGS = $(AM_CPPFLAGS)
get_disto_LDADD = ../imageio/libexample_util.la ../imageio/libimagedec.la
get_disto_LDADD += ../src/libwebp.la
get_disto_LDADD += $(PNG_LIBS) $(JPEG_LIBS) $(TIFF_LIBS)
webp_quality_SOURCES = webp_quality.c
webp_quality_CPPFLAGS = $(AM_CPPFLAGS) $(USE_EXPERIMENTAL_CODE)
webp_quality_LDADD = ../imageio/libexample_util.la ../imageio/libimagedec.la
webp_quality_LDADD += ./libwebpextras.la
webp_quality_LDADD += ../src/libwebp.la $(JPEG_LIBS) $(PNG_LIBS) $(TIFF_LIBS)