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configure: test for -msse2

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+ add a WEBP_HAVE_SSE2 to dsp.h

not all 32-bit toolchain configurations will have sse2 enabled by
default

Change-Id: I7c675e511581f93cf55c79f960fa7efa2df4987e
This commit is contained in:
James Zern 2014-06-07 19:44:08 -07:00
parent b9d2efc629
commit 6e61a3a905
3 changed files with 29 additions and 8 deletions
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6
configure.ac
View File

@ -67,6 +67,12 @@ AS_IF([test -n "$AVX2_FLAGS"], [
[Set to 1 if AVX2 is supported])])
AC_SUBST([AVX2_FLAGS])
TEST_AND_ADD_CFLAGS([SSE2_FLAGS], [-msse2])
AS_IF([test -n "$SSE2_FLAGS"], [
AC_DEFINE(WEBP_HAVE_SSE2, [1],
[Set to 1 if SSE2 is supported])])
AC_SUBST([SSE2_FLAGS])
dnl === CLEAR_LIBVARS([var_pfx])
dnl === Clears <var_pfx>_{INCLUDES,LIBS}.
AC_DEFUN([CLEAR_LIBVARS], [$1_INCLUDES=""; $1_LIBS=""])

25
src/dsp/Makefile.am
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@ -1,5 +1,6 @@
AM_CPPFLAGS = -I$(top_srcdir)/src
noinst_LTLIBRARIES = libwebpdsp.la libwebpdsp_avx2.la
noinst_LTLIBRARIES += libwebpdsp_sse2.la libwebpdspdecode_sse2.la
if BUILD_LIBWEBPDECODER
noinst_LTLIBRARIES += libwebpdspdecode.la
@ -15,34 +16,43 @@ COMMON_SOURCES += dec.c
COMMON_SOURCES += dec_clip_tables.c
COMMON_SOURCES += dec_mips32.c
COMMON_SOURCES += dec_neon.c
COMMON_SOURCES += dec_sse2.c
COMMON_SOURCES += dsp.h
COMMON_SOURCES += lossless.c
COMMON_SOURCES += lossless.h
COMMON_SOURCES += lossless_mips32.c
COMMON_SOURCES += lossless_neon.c
COMMON_SOURCES += lossless_sse2.c
COMMON_SOURCES += neon.h
COMMON_SOURCES += upsampling.c
COMMON_SOURCES += upsampling_neon.c
COMMON_SOURCES += upsampling_sse2.c
COMMON_SOURCES += yuv.c
COMMON_SOURCES += yuv.h
COMMON_SOURCES += yuv_mips32.c
COMMON_SOURCES += yuv_sse2.c
COMMON_SOURCES += yuv_tables_sse2.h
ENC_SOURCES =
ENC_SOURCES += enc.c
ENC_SOURCES += enc_mips32.c
ENC_SOURCES += enc_neon.c
ENC_SOURCES += enc_sse2.c
libwebpdsp_avx2_la_SOURCES =
libwebpdsp_avx2_la_SOURCES += enc_avx2.c
libwebpdsp_avx2_la_CPPFLAGS = $(libwebpdsp_la_CPPFLAGS)
libwebpdsp_avx2_la_CFLAGS = $(AM_CFLAGS) $(AVX2_FLAGS)
libwebpdspdecode_sse2_la_SOURCES =
libwebpdspdecode_sse2_la_SOURCES += dec_sse2.c
libwebpdspdecode_sse2_la_SOURCES += lossless_sse2.c
libwebpdspdecode_sse2_la_SOURCES += upsampling_sse2.c
libwebpdspdecode_sse2_la_SOURCES += yuv_sse2.c
libwebpdspdecode_sse2_la_SOURCES += yuv_tables_sse2.h
libwebpdspdecode_sse2_la_CPPFLAGS = $(libwebpdsp_sse2_la_CPPFLAGS)
libwebpdspdecode_sse2_la_CFLAGS = $(libwebpdsp_sse2_la_CFLAGS)
libwebpdsp_sse2_la_SOURCES =
libwebpdsp_sse2_la_SOURCES += enc_sse2.c
libwebpdsp_sse2_la_CPPFLAGS = $(libwebpdsp_la_CPPFLAGS)
libwebpdsp_sse2_la_CFLAGS = $(AM_CFLAGS) $(SSE2_FLAGS)
libwebpdsp_sse2_la_LIBADD = libwebpdspdecode_sse2.la
libwebpdsp_la_SOURCES = $(COMMON_SOURCES) $(ENC_SOURCES)
noinst_HEADERS =
@ -51,11 +61,12 @@ noinst_HEADERS += ../webp/decode.h
libwebpdsp_la_CPPFLAGS = $(USE_EXPERIMENTAL_CODE) $(USE_SWAP_16BIT_CSP)
libwebpdsp_la_LDFLAGS = -lm
libwebpdsp_la_LIBADD = libwebpdsp_avx2.la
libwebpdsp_la_LIBADD = libwebpdsp_avx2.la libwebpdsp_sse2.la
if BUILD_LIBWEBPDECODER
libwebpdspdecode_la_SOURCES = $(COMMON_SOURCES)
libwebpdspdecode_la_CPPFLAGS = $(libwebpdsp_la_CPPFLAGS)
libwebpdspdecode_la_LDFLAGS = $(libwebpdsp_la_LDFLAGS)
libwebpdspdecode_la_LIBADD = libwebpdspdecode_sse2.la
endif

6
src/dsp/dsp.h
View File

@ -40,7 +40,11 @@ extern "C" {
#define WEBP_MSC_SSE2 // Visual C++ SSE2 targets
#endif
#if defined(__SSE2__) || defined(WEBP_MSC_SSE2)
// WEBP_HAVE_* are used to indicate the presence of the instruction set in dsp
// files without intrinsics, allowing the corresponding Init() to be called.
// Files containing intrinsics will need to be built targeting the instruction
// set so should succeed on one of the earlier tests.
#if defined(__SSE2__) || defined(WEBP_MSC_SSE2) || defined(WEBP_HAVE_SSE2)
#define WEBP_USE_SSE2
#endif