migrate anim_diff tool from C++ to C89
+ jenkins fixes for native config (library order) + add a missing -lm + replace log10 by log, just in case + partially reverted configure.ac to remove the C++ part Change-Id: Iee099c544451b23c6cfaca53d5a95d2d332e066e
This commit is contained in:
Pascal Massimino
James Zern
parent
024324273e
commit
96201e50ea
11
Makefile.vc
11
Makefile.vc
@ -325,6 +325,7 @@ gif2webp: $(DIRBIN)\gif2webp.exe
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anim_diff: $(DIRBIN)\anim_diff.exe
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$(DIRBIN)\anim_diff.exe: $(DIROBJ)\examples\anim_diff.obj $(EX_ANIM_UTIL_OBJS)
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$(DIRBIN)\anim_diff.exe: $(EX_UTIL_OBJS)
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$(DIRBIN)\anim_diff.exe: $(EX_GIF_DEC_OBJS) $(LIBWEBPDEMUX) $(LIBWEBP)
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$(DIRBIN)\cwebp.exe: $(DIROBJ)\examples\cwebp.obj $(EX_FORMAT_DEC_OBJS)
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$(DIRBIN)\dwebp.exe: $(DIROBJ)\examples\dwebp.obj
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@ -382,18 +383,18 @@ $(DIROBJ)\$(DLLINC):
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@echo #define WEBP_EXTERN(type) __declspec(dllexport) type >> $@
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@echo #endif /* WEBP_DLL_H_ */ >> $@
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.SUFFIXES: .c .cc .obj .res .exe
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.SUFFIXES: .c .obj .res .exe
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# File-specific flag builds. Note batch rules take precedence over wildcards,
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# so for now name each file individually.
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$(DIROBJ)\dsp\enc_avx2.obj: src\dsp\enc_avx2.c
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$(CC) $(CFLAGS) $(AVX2_FLAGS) /Fd$(LIBWEBP_PDBNAME) /Fo$(DIROBJ)\dsp\ \
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src\dsp\$(@B).c
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$(DIROBJ)\examples\anim_diff.obj: examples\anim_diff.cc
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$(DIROBJ)\examples\anim_diff.obj: examples\anim_diff.c
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$(CC) $(CFLAGS) /DWEBP_HAVE_GIF /Fd$(LIBWEBP_PDBNAME) \
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/Fo$(DIROBJ)\examples\ examples\$(@B).cc
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$(DIROBJ)\examples\anim_util.obj: examples\anim_util.cc
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/Fo$(DIROBJ)\examples\ examples\$(@B).c
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$(DIROBJ)\examples\anim_util.obj: examples\anim_util.c
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$(CC) $(CFLAGS) /DWEBP_HAVE_GIF /Fd$(LIBWEBP_PDBNAME) \
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/Fo$(DIROBJ)\examples\ examples\$(@B).cc
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/Fo$(DIROBJ)\examples\ examples\$(@B).c
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$(DIROBJ)\examples\gif2webp.obj: examples\gif2webp.c
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$(CC) $(CFLAGS) /DWEBP_HAVE_GIF /Fd$(LIBWEBP_PDBNAME) \
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/Fo$(DIROBJ)\examples\ examples\$(@B).c
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86
configure.ac
86
configure.ac
@ -11,7 +11,6 @@ m4_ifdef([AM_PROG_AR], [AM_PROG_AR])
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AC_PROG_LIBTOOL
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AM_PROG_CC_C_O
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AC_PROG_CXX
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dnl === Enable less verbose output when building.
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m4_ifdef([AM_SILENT_RULES], [AM_SILENT_RULES([yes])])
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@ -37,44 +36,34 @@ AC_ARG_WITH([pkgconfigdir], AS_HELP_STRING([--with-pkgconfigdir=DIR],
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[pkgconfigdir="$withval"], [pkgconfigdir='${libdir}/pkgconfig'])
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AC_SUBST([pkgconfigdir])
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dnl === TEST_AND_ADD_FLAGS(var, compiler, flag)
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dnl === Checks whether $CC (or $CXX if compiler is 'CXX') supports 'flag' and
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dnl === adds it to 'var' on success.
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AC_DEFUN([TEST_AND_ADD_FLAGS],
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[AS_IF([test "$2" = "CXX"],
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[SAVED_FLAGS="$CXXFLAGS"
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CXXFLAGS="-Werror $3"
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AC_MSG_CHECKING([whether $CXX supports $3])
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AC_LANG_PUSH([C++])],
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[SAVED_FLAGS="$CFLAGS"
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CFLAGS="-Werror $3"
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AC_MSG_CHECKING([whether $CC supports $3])])
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dnl === TEST_AND_ADD_CFLAGS(var, flag)
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dnl === Checks whether $CC supports 'flag' and adds it to 'var'
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dnl === on success.
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AC_DEFUN([TEST_AND_ADD_CFLAGS],
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[SAVED_CFLAGS="$CFLAGS"
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CFLAGS="-Werror $2"
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AC_MSG_CHECKING([whether $CC supports $2])
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dnl Note AC_LANG_PROGRAM([]) uses an old-style main definition.
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AC_COMPILE_IFELSE([AC_LANG_SOURCE([int main(void) { return 0; }])],
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[AC_MSG_RESULT([yes])]
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dnl Simply append the variable avoiding a
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dnl compatibility ifdef for AS_VAR_APPEND as this
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dnl variable shouldn't grow all that large.
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[$1="${$1} $3"],
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[$1="${$1} $2"],
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[AC_MSG_RESULT([no])])
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AS_IF([test "$2" = "CXX"],
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[AC_LANG_POP([C++])
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CXXFLAGS="$SAVED_FLAGS"],
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[CFLAGS="$SAVED_FLAGS"])])
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TEST_AND_ADD_FLAGS([AM_CFLAGS], [C], [-Wall])
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TEST_AND_ADD_FLAGS([AM_CFLAGS], [C], [-Wdeclaration-after-statement])
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TEST_AND_ADD_FLAGS([AM_CFLAGS], [C], [-Wextra])
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TEST_AND_ADD_FLAGS([AM_CFLAGS], [C], [-Wformat-nonliteral])
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TEST_AND_ADD_FLAGS([AM_CFLAGS], [C], [-Wformat-security])
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TEST_AND_ADD_FLAGS([AM_CFLAGS], [C], [-Wmissing-declarations])
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TEST_AND_ADD_FLAGS([AM_CFLAGS], [C], [-Wmissing-prototypes])
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TEST_AND_ADD_FLAGS([AM_CFLAGS], [C], [-Wold-style-definition])
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TEST_AND_ADD_FLAGS([AM_CFLAGS], [C], [-Wshadow])
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TEST_AND_ADD_FLAGS([AM_CFLAGS], [C], [-Wshorten-64-to-32])
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TEST_AND_ADD_FLAGS([AM_CFLAGS], [C], [-Wunreachable-code])
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TEST_AND_ADD_FLAGS([AM_CFLAGS], [C], [-Wunused-but-set-variable])
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TEST_AND_ADD_FLAGS([AM_CFLAGS], [C], [-Wunused])
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TEST_AND_ADD_FLAGS([AM_CFLAGS], [C], [-Wvla])
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CFLAGS="$SAVED_CFLAGS"])
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TEST_AND_ADD_CFLAGS([AM_CFLAGS], [-Wall])
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TEST_AND_ADD_CFLAGS([AM_CFLAGS], [-Wdeclaration-after-statement])
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TEST_AND_ADD_CFLAGS([AM_CFLAGS], [-Wextra])
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TEST_AND_ADD_CFLAGS([AM_CFLAGS], [-Wformat-nonliteral])
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TEST_AND_ADD_CFLAGS([AM_CFLAGS], [-Wformat-security])
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TEST_AND_ADD_CFLAGS([AM_CFLAGS], [-Wmissing-declarations])
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TEST_AND_ADD_CFLAGS([AM_CFLAGS], [-Wmissing-prototypes])
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TEST_AND_ADD_CFLAGS([AM_CFLAGS], [-Wold-style-definition])
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TEST_AND_ADD_CFLAGS([AM_CFLAGS], [-Wshadow])
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TEST_AND_ADD_CFLAGS([AM_CFLAGS], [-Wunused-but-set-variable])
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TEST_AND_ADD_CFLAGS([AM_CFLAGS], [-Wunused])
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TEST_AND_ADD_CFLAGS([AM_CFLAGS], [-Wvla])
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# https://gcc.gnu.org/bugzilla/show_bug.cgi?id=62040
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# https://gcc.gnu.org/bugzilla/show_bug.cgi?id=61622
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AS_IF([test "$GCC" = "yes" ], [
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@ -87,7 +76,7 @@ AS_IF([test "$GCC" = "yes" ], [
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esac
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esac
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AS_IF([test "$gcc_wht_bug" = "yes"], [
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TEST_AND_ADD_FLAGS([AM_CFLAGS], [C], [-frename-registers])])])
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TEST_AND_ADD_CFLAGS([AM_CFLAGS], [-frename-registers])])])
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AC_SUBST([AM_CFLAGS])
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dnl === Check for machine specific flags
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@ -98,7 +87,7 @@ AC_ARG_ENABLE([avx2],
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AS_IF([test "x$enable_avx2" != "xno" -a "x$enable_sse4_1" != "xno" \
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-a "x$enable_sse2" != "xno"], [
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TEST_AND_ADD_FLAGS([AVX2_FLAGS], [C], [-mavx2])
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TEST_AND_ADD_CFLAGS([AVX2_FLAGS], [-mavx2])
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AS_IF([test -n "$AVX2_FLAGS"], [
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SAVED_CFLAGS=$CFLAGS
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CFLAGS="$CFLAGS $AVX2_FLAGS"
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@ -121,7 +110,7 @@ AC_ARG_ENABLE([sse4.1],
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@<:@default=auto@:>@]))
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AS_IF([test "x$enable_sse4_1" != "xno" -a "x$enable_sse2" != "xno"], [
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TEST_AND_ADD_FLAGS([SSE41_FLAGS], [C], [-msse4.1])
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TEST_AND_ADD_CFLAGS([SSE41_FLAGS], [-msse4.1])
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AS_IF([test -n "$SSE41_FLAGS"], [
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SAVED_CFLAGS=$CFLAGS
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CFLAGS="$CFLAGS $SSE41_FLAGS"
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@ -138,7 +127,7 @@ AC_ARG_ENABLE([sse2],
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@<:@default=auto@:>@]))
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AS_IF([test "x$enable_sse2" != "xno"], [
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TEST_AND_ADD_FLAGS([SSE2_FLAGS], [C], [-msse2])
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TEST_AND_ADD_CFLAGS([SSE2_FLAGS], [-msse2])
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AS_IF([test -n "$SSE2_FLAGS"], [
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SAVED_CFLAGS=$CFLAGS
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CFLAGS="$CFLAGS $SSE2_FLAGS"
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@ -449,30 +438,7 @@ AS_IF([test "x$enable_gif" != "xno"], [
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if test "$gif_support" = "yes" -a \
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"$enable_libwebpdemux" = "yes"; then
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dnl === Enable C++ compiler for .cc sources, if available.
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AC_LANG_PUSH([C++])
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AC_LINK_IFELSE(
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[AC_LANG_PROGRAM([#include <iostream>],
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[std::cout << "a";])],
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[cxx_support=yes],
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[AC_MSG_WARN([C++ compiler absent: compilation of C++ sources disabled.])
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cxx_support=no])
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AC_LANG_POP([C++])
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if test "$cxx_support" = "yes"; then
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build_animdiff=yes
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TEST_AND_ADD_FLAGS([AM_CXXFLAGS], [CXX], [-Wall])
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TEST_AND_ADD_FLAGS([AM_CXXFLAGS], [CXX], [-Wextra])
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TEST_AND_ADD_FLAGS([AM_CXXFLAGS], [CXX], [-Wformat-nonliteral])
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TEST_AND_ADD_FLAGS([AM_CXXFLAGS], [CXX], [-Wformat-security])
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TEST_AND_ADD_FLAGS([AM_CXXFLAGS], [CXX], [-Wmissing-declarations])
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TEST_AND_ADD_FLAGS([AM_CXXFLAGS], [CXX], [-Wshadow])
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TEST_AND_ADD_FLAGS([AM_CXXFLAGS], [CXX], [-Wshorten-64-to-32])
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TEST_AND_ADD_FLAGS([AM_CXXFLAGS], [CXX], [-Wunreachable-code])
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TEST_AND_ADD_FLAGS([AM_CXXFLAGS], [CXX], [-Wunused-but-set-variable])
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TEST_AND_ADD_FLAGS([AM_CXXFLAGS], [CXX], [-Wunused])
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TEST_AND_ADD_FLAGS([AM_CXXFLAGS], [CXX], [-Wvla])
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AC_SUBST([AM_CXXFLAGS])
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fi
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build_animdiff=yes
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fi
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if test "$gif_support" = "yes" -a \
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@ -20,10 +20,11 @@ if BUILD_ANIMDIFF
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noinst_PROGRAMS = anim_diff
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endif
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anim_diff_SOURCES = anim_diff.cc anim_util.cc anim_util.h
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anim_diff_SOURCES = anim_diff.c anim_util.c anim_util.h
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anim_diff_CPPFLAGS = $(AM_CPPFLAGS) $(GIF_INCLUDES)
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anim_diff_LDADD = ../src/demux/libwebpdemux.la
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anim_diff_LDADD += $(GIF_LIBS)
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anim_diff_LDADD += libexampleutil.la
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anim_diff_LDADD += $(GIF_LIBS) -lm
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dwebp_SOURCES = dwebp.c stopwatch.h
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dwebp_CPPFLAGS = $(AM_CPPFLAGS) $(USE_EXPERIMENTAL_CODE)
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@ -18,129 +18,136 @@
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#include <stdlib.h> // for 'strtod'.
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#include <string.h> // for 'strcmp'.
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#include <iostream> // for 'cout'.
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#include <sstream> // for 'ostringstream'.
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#include "./anim_util.h"
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namespace {
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#if defined(_MSC_VER) && _MSC_VER < 1900
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#define snprintf _snprintf
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#endif
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// Return true if 'a + b' will overflow.
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bool AdditionWillOverflow(int a, int b) {
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// Returns true if 'a + b' will overflow.
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static int AdditionWillOverflow(int a, int b) {
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return (b > 0) && (a > INT_MAX - b);
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}
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// Minimize number of frames by combining successive frames that have exact same
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// ARGB data into a single longer duration frame.
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void MinimizeAnimationFrames(AnimatedImage* const img) {
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for (size_t i = 1; i < img->frames.size(); ++i) {
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static void MinimizeAnimationFrames(AnimatedImage* const img) {
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uint32_t i;
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for (i = 1; i < img->num_frames; ++i) {
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DecodedFrame* const frame1 = &img->frames[i - 1];
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DecodedFrame* const frame2 = &img->frames[i];
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const uint8_t* const rgba1 = frame1->rgba;
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const uint8_t* const rgba2 = frame2->rgba;
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// If merging frames will result in integer overflow for 'duration',
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// skip merging.
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if (AdditionWillOverflow(frame1->duration, frame2->duration)) continue;
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const uint8_t* rgba1 = frame1->rgba.data();
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const uint8_t* rgba2 = frame2->rgba.data();
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if (!memcmp(rgba1, rgba2, img->canvas_width * 4 * img->canvas_height)) {
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// Merge 'i+1'th frame into 'i'th frame.
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frame1->duration += frame2->duration;
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img->frames.erase(img->frames.begin() + i);
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if (i + 1 < img->num_frames) {
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memmove(&img->frames[i], &img->frames[i + 1],
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(img->num_frames - i - 1) * sizeof(*img->frames));
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}
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--img->num_frames;
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--i;
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}
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}
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}
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template<typename T>
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bool CompareValues(T a, T b, const std::string& output_str) {
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static int CompareValues(uint32_t a, uint32_t b, const char* output_str) {
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if (a != b) {
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std::cout << output_str << ": " << a << " vs " << b << std::endl;
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return false;
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fprintf(stderr, "%s: %d vs %d\n", output_str, a, b);
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return 0;
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}
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return true;
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return 1;
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}
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// Note: As long as frame durations and reconstructed frames are identical, it
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// is OK for other aspects like offsets, dispose/blend method to vary.
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bool CompareAnimatedImagePair(const AnimatedImage& img1,
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const AnimatedImage& img2,
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bool premultiply,
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double min_psnr) {
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bool ok = true;
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ok = CompareValues(img1.canvas_width, img2.canvas_width,
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"Canvas width mismatch") && ok;
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ok = CompareValues(img1.canvas_height, img2.canvas_height,
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"Canvas height mismatch") && ok;
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ok = CompareValues(img1.frames.size(), img2.frames.size(),
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"Frame count mismatch") && ok;
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if (!ok) return false; // These are fatal failures, can't proceed.
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static int CompareAnimatedImagePair(const AnimatedImage* const img1,
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const AnimatedImage* const img2,
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int premultiply,
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double min_psnr) {
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int ok = 1;
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const int is_multi_frame_image = (img1->num_frames > 1);
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uint32_t i;
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ok = CompareValues(img1->canvas_width, img2->canvas_width,
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"Canvas width mismatch") && ok;
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ok = CompareValues(img1->canvas_height, img2->canvas_height,
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"Canvas height mismatch") && ok;
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ok = CompareValues(img1->num_frames, img2->num_frames,
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"Frame count mismatch") && ok;
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if (!ok) return 0; // These are fatal failures, can't proceed.
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const bool is_multi_frame_image = (img1.frames.size() > 1);
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if (is_multi_frame_image) { // Checks relevant for multi-frame images only.
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ok = CompareValues(img1.loop_count, img2.loop_count,
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ok = CompareValues(img1->loop_count, img2->loop_count,
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"Loop count mismatch") && ok;
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ok = CompareValues(img1.bgcolor, img2.bgcolor,
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ok = CompareValues(img1->bgcolor, img2->bgcolor,
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"Background color mismatch") && ok;
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}
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for (size_t i = 0; i < img1.frames.size(); ++i) {
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if (is_multi_frame_image) { // Check relevant for multi-frame images only.
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std::ostringstream error_str;
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error_str << "Frame #" << i << ", duration mismatch";
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ok = CompareValues(img1.frames[i].duration, img2.frames[i].duration,
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error_str.str()) && ok;
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}
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for (i = 0; i < img1->num_frames; ++i) {
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// Pixel-by-pixel comparison.
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const uint8_t* rgba1 = img1.frames[i].rgba.data();
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const uint8_t* rgba2 = img2.frames[i].rgba.data();
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const uint8_t* const rgba1 = img1->frames[i].rgba;
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const uint8_t* const rgba2 = img2->frames[i].rgba;
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int max_diff;
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double psnr;
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GetDiffAndPSNR(rgba1, rgba2, img1.canvas_width, img1.canvas_height,
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if (is_multi_frame_image) { // Check relevant for multi-frame images only.
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const char format[] = "Frame #%d, duration mismatch";
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char tmp[sizeof(format) + 8];
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ok = ok && (snprintf(tmp, sizeof(tmp), format, i) >= 0);
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ok = ok && CompareValues(img1->frames[i].duration,
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img2->frames[i].duration, tmp);
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}
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GetDiffAndPSNR(rgba1, rgba2, img1->canvas_width, img1->canvas_height,
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premultiply, &max_diff, &psnr);
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if (min_psnr > 0.) {
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if (psnr < min_psnr) {
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fprintf(stderr, "Frame #%zu, psnr = %.2lf (min_psnr = %f)\n", i,
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fprintf(stderr, "Frame #%d, psnr = %.2lf (min_psnr = %f)\n", i,
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psnr, min_psnr);
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ok = false;
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ok = 0;
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}
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} else {
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if (max_diff != 0) {
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fprintf(stderr, "Frame #%zu, max pixel diff: %d\n", i, max_diff);
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ok = false;
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fprintf(stderr, "Frame #%d, max pixel diff: %d\n", i, max_diff);
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ok = 0;
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}
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}
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}
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return ok;
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}
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void Help() {
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static void Help(void) {
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printf("\nUsage: anim_diff <image1> <image2> [-dump_frames <folder>] "
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"[-min_psnr <float>][-raw_comparison]\n");
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}
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} // namespace
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int main(int argc, const char* argv[]) {
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bool dump_frames = false;
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int return_code = -1;
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int dump_frames = 0;
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const char* dump_folder = NULL;
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double min_psnr = 0.;
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bool got_input1 = false;
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bool got_input2 = false;
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bool premultiply = true;
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const char* files[2];
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int got_input1 = 0;
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int got_input2 = 0;
|
||||
int premultiply = 1;
|
||||
int i, c;
|
||||
const char* files[2] = { NULL, NULL };
|
||||
AnimatedImage images[2];
|
||||
|
||||
if (argc < 3) {
|
||||
Help();
|
||||
return -1;
|
||||
}
|
||||
|
||||
for (int c = 1; c < argc; ++c) {
|
||||
bool parse_error = false;
|
||||
for (c = 1; c < argc; ++c) {
|
||||
int parse_error = 0;
|
||||
if (!strcmp(argv[c], "-dump_frames")) {
|
||||
if (c < argc - 1) {
|
||||
dump_frames = true;
|
||||
dump_frames = 1;
|
||||
dump_folder = argv[++c];
|
||||
} else {
|
||||
parse_error = true;
|
||||
parse_error = 1;
|
||||
}
|
||||
} else if (!strcmp(argv[c], "-min_psnr")) {
|
||||
if (c < argc - 1) {
|
||||
@ -148,24 +155,24 @@ int main(int argc, const char* argv[]) {
|
||||
char* end = NULL;
|
||||
const double d = strtod(v, &end);
|
||||
if (end == v) {
|
||||
parse_error = true;
|
||||
parse_error = 1;
|
||||
fprintf(stderr, "Error! '%s' is not a floating point number.\n", v);
|
||||
}
|
||||
min_psnr = d;
|
||||
} else {
|
||||
parse_error = true;
|
||||
parse_error = 1;
|
||||
}
|
||||
} else if (!strcmp(argv[c], "-raw_comparison")) {
|
||||
premultiply = false;
|
||||
premultiply = 0;
|
||||
} else {
|
||||
if (!got_input1) {
|
||||
files[0] = argv[c];
|
||||
got_input1 = true;
|
||||
got_input1 = 1;
|
||||
} else if (!got_input2) {
|
||||
files[1] = argv[c];
|
||||
got_input2 = true;
|
||||
got_input2 = 1;
|
||||
} else {
|
||||
parse_error = true;
|
||||
parse_error = 1;
|
||||
}
|
||||
}
|
||||
if (parse_error) {
|
||||
@ -182,22 +189,28 @@ int main(int argc, const char* argv[]) {
|
||||
printf("Dumping decoded frames in: %s\n", dump_folder);
|
||||
}
|
||||
|
||||
AnimatedImage images[2];
|
||||
for (int i = 0; i < 2; ++i) {
|
||||
memset(images, 0, sizeof(images));
|
||||
for (i = 0; i < 2; ++i) {
|
||||
printf("Decoding file: %s\n", files[i]);
|
||||
if (!ReadAnimatedImage(files[i], &images[i], dump_frames, dump_folder)) {
|
||||
fprintf(stderr, "Error decoding file: %s\n Aborting.\n", files[i]);
|
||||
return -2;
|
||||
return_code = -2;
|
||||
goto End;
|
||||
} else {
|
||||
MinimizeAnimationFrames(&images[i]);
|
||||
}
|
||||
MinimizeAnimationFrames(&images[i]);
|
||||
}
|
||||
|
||||
if (!CompareAnimatedImagePair(images[0], images[1],
|
||||
if (!CompareAnimatedImagePair(&images[0], &images[1],
|
||||
premultiply, min_psnr)) {
|
||||
fprintf(stderr, "\nFiles %s and %s differ.\n", files[0], files[1]);
|
||||
return -3;
|
||||
return_code = -3;
|
||||
} else {
|
||||
printf("\nFiles %s and %s are identical.\n", files[0], files[1]);
|
||||
return_code = 0;
|
||||
}
|
||||
|
||||
printf("\nFiles %s and %s are identical.\n", files[0], files[1]);
|
||||
return 0;
|
||||
End:
|
||||
ClearAnimatedImage(&images[0]);
|
||||
ClearAnimatedImage(&images[1]);
|
||||
return return_code;
|
||||
}
|
||||
@ -16,20 +16,17 @@
|
||||
#include <stdio.h>
|
||||
#include <string.h>
|
||||
|
||||
#include <fstream>
|
||||
#include <sstream> // for 'ostringstream'.
|
||||
|
||||
#ifdef WEBP_HAVE_GIF
|
||||
#include <gif_lib.h>
|
||||
#endif
|
||||
#include "webp/format_constants.h"
|
||||
#include "webp/decode.h"
|
||||
#include "webp/demux.h"
|
||||
#include "./example_util.h"
|
||||
|
||||
using std::ifstream;
|
||||
using std::ios;
|
||||
using std::ofstream;
|
||||
using std::ostringstream;
|
||||
#if defined(_MSC_VER) && _MSC_VER < 1900
|
||||
#define snprintf _snprintf
|
||||
#endif
|
||||
|
||||
static const int kNumChannels = 4;
|
||||
|
||||
@ -37,17 +34,43 @@ static const int kNumChannels = 4;
|
||||
// Common utilities.
|
||||
|
||||
// Returns true if the frame covers the full canvas.
|
||||
static bool IsFullFrame(int width, int height,
|
||||
int canvas_width, int canvas_height) {
|
||||
static int IsFullFrame(int width, int height,
|
||||
int canvas_width, int canvas_height) {
|
||||
return (width == canvas_width && height == canvas_height);
|
||||
}
|
||||
|
||||
static void AllocateFrames(AnimatedImage* const image, uint32_t frame_count) {
|
||||
image->frames.resize(frame_count);
|
||||
for (size_t i = 0; i < image->frames.size(); ++i) {
|
||||
const size_t rgba_size =
|
||||
image->canvas_width * kNumChannels * image->canvas_height;
|
||||
image->frames[i].rgba.resize(rgba_size);
|
||||
static int AllocateFrames(AnimatedImage* const image, uint32_t num_frames) {
|
||||
uint32_t i;
|
||||
const size_t rgba_size =
|
||||
image->canvas_width * kNumChannels * image->canvas_height;
|
||||
uint8_t* const mem = (uint8_t*)malloc(num_frames * rgba_size * sizeof(*mem));
|
||||
DecodedFrame* const frames =
|
||||
(DecodedFrame*)malloc(num_frames * sizeof(*frames));
|
||||
|
||||
if (mem == NULL || frames == NULL) {
|
||||
free(mem);
|
||||
free(frames);
|
||||
return 0;
|
||||
}
|
||||
free(image->raw_mem);
|
||||
image->num_frames = num_frames;
|
||||
image->frames = frames;
|
||||
for (i = 0; i < num_frames; ++i) {
|
||||
frames[i].rgba = mem + i * rgba_size;
|
||||
frames[i].duration = 0;
|
||||
frames[i].is_key_frame = 0;
|
||||
}
|
||||
image->raw_mem = mem;
|
||||
return 1;
|
||||
}
|
||||
|
||||
void ClearAnimatedImage(AnimatedImage* const image) {
|
||||
if (image != NULL) {
|
||||
free(image->raw_mem);
|
||||
free(image->frames);
|
||||
image->num_frames = 0;
|
||||
image->frames = NULL;
|
||||
image->raw_mem = NULL;
|
||||
}
|
||||
}
|
||||
|
||||
@ -60,9 +83,10 @@ static void ZeroFillCanvas(uint8_t* rgba,
|
||||
// Clear given frame rectangle to transparent.
|
||||
static void ZeroFillFrameRect(uint8_t* rgba, int rgba_stride, int x_offset,
|
||||
int y_offset, int width, int height) {
|
||||
int j;
|
||||
assert(width * kNumChannels <= rgba_stride);
|
||||
rgba += y_offset * rgba_stride + x_offset * kNumChannels;
|
||||
for (int j = 0; j < height; ++j) {
|
||||
for (j = 0; j < height; ++j) {
|
||||
memset(rgba, 0, width * kNumChannels);
|
||||
rgba += rgba_stride;
|
||||
}
|
||||
@ -79,12 +103,13 @@ static void CopyCanvas(const uint8_t* src, uint8_t* dst,
|
||||
static void CopyFrameRectangle(const uint8_t* src, uint8_t* dst, int stride,
|
||||
int x_offset, int y_offset,
|
||||
int width, int height) {
|
||||
int j;
|
||||
const int width_in_bytes = width * kNumChannels;
|
||||
assert(width_in_bytes <= stride);
|
||||
const size_t offset = y_offset * stride + x_offset * kNumChannels;
|
||||
assert(width_in_bytes <= stride);
|
||||
src += offset;
|
||||
dst += offset;
|
||||
for (int j = 0; j < height; ++j) {
|
||||
for (j = 0; j < height; ++j) {
|
||||
memcpy(dst, src, width_in_bytes);
|
||||
src += stride;
|
||||
dst += stride;
|
||||
@ -104,71 +129,84 @@ static void CleanupTransparentPixels(uint32_t* rgba,
|
||||
}
|
||||
}
|
||||
|
||||
// Dump frame to a PAM file.
|
||||
// Returns true on success.
|
||||
static bool DumpFrame(const char filename[], const char dump_folder[],
|
||||
uint32_t frame_num, const uint8_t rgba[],
|
||||
int canvas_width, int canvas_height) {
|
||||
const std::string filename_str = filename;
|
||||
const size_t slash_idx = filename_str.find_last_of("/\\");
|
||||
const std::string base_name = (slash_idx != std::string::npos)
|
||||
? filename_str.substr(slash_idx + 1)
|
||||
: filename_str;
|
||||
ostringstream dump_file;
|
||||
dump_file << dump_folder << "/" << base_name << "_frame_" << frame_num
|
||||
<< ".pam";
|
||||
// Dump frame to a PAM file. Returns true on success.
|
||||
static int DumpFrame(const char filename[], const char dump_folder[],
|
||||
uint32_t frame_num, const uint8_t rgba[],
|
||||
int canvas_width, int canvas_height) {
|
||||
int ok = 0;
|
||||
size_t max_len;
|
||||
int y;
|
||||
const char* base_name = NULL;
|
||||
char* file_name = NULL;
|
||||
FILE* f = NULL;
|
||||
|
||||
ofstream fout(dump_file.str().c_str(), ios::binary | ios::out);
|
||||
if (!fout.good()) {
|
||||
fprintf(stderr, "Error opening file for writing: %s\n",
|
||||
dump_file.str().c_str());
|
||||
return false;
|
||||
base_name = strrchr(filename, '/');
|
||||
base_name = (base_name == NULL) ? filename : base_name + 1;
|
||||
max_len = strlen(dump_folder) + 1 + strlen(base_name)
|
||||
+ strlen("_frame_") + strlen(".pam") + 8;
|
||||
file_name = (char*)malloc(max_len * sizeof(*file_name));
|
||||
if (file_name == NULL) goto End;
|
||||
|
||||
if (snprintf(file_name, max_len, "%s/%s_frame_%d.pam",
|
||||
dump_folder, base_name, frame_num) < 0) {
|
||||
fprintf(stderr, "Error while generating file name\n");
|
||||
goto End;
|
||||
}
|
||||
|
||||
fout << "P7\nWIDTH " << canvas_width << "\nHEIGHT " << canvas_height
|
||||
<< "\nDEPTH 4\nMAXVAL 255\nTUPLTYPE RGB_ALPHA\nENDHDR\n";
|
||||
for (int y = 0; y < canvas_height; ++y) {
|
||||
fout.write(
|
||||
reinterpret_cast<const char*>(rgba) + y * canvas_width * kNumChannels,
|
||||
canvas_width * kNumChannels);
|
||||
if (!fout.good()) {
|
||||
fprintf(stderr, "Error writing to file: %s\n", dump_file.str().c_str());
|
||||
return 0;
|
||||
f = fopen(file_name, "wb");
|
||||
if (f == NULL) {
|
||||
fprintf(stderr, "Error opening file for writing: %s\n", file_name);
|
||||
ok = 0;
|
||||
goto End;
|
||||
}
|
||||
if (fprintf(f, "P7\nWIDTH %d\nHEIGHT %d\n"
|
||||
"DEPTH 4\nMAXVAL 255\nTUPLTYPE RGB_ALPHA\nENDHDR\n",
|
||||
canvas_width, canvas_height) < 0) {
|
||||
fprintf(stderr, "Write error for file %s\n", file_name);
|
||||
goto End;
|
||||
}
|
||||
for (y = 0; y < canvas_height; ++y) {
|
||||
if (fwrite((const char*)(rgba) + y * canvas_width * kNumChannels,
|
||||
canvas_width * kNumChannels, 1, f) != 1) {
|
||||
fprintf(stderr, "Error writing to file: %s\n", file_name);
|
||||
goto End;
|
||||
}
|
||||
}
|
||||
fout.close();
|
||||
return true;
|
||||
ok = 1;
|
||||
End:
|
||||
if (f != NULL) fclose(f);
|
||||
free(file_name);
|
||||
return ok;
|
||||
}
|
||||
|
||||
// -----------------------------------------------------------------------------
|
||||
// WebP Decoding.
|
||||
|
||||
// Returns true if this is a valid WebP bitstream.
|
||||
static bool IsWebP(const std::string& file_str) {
|
||||
return WebPGetInfo(reinterpret_cast<const uint8_t*>(file_str.c_str()),
|
||||
file_str.length(), NULL, NULL) != 0;
|
||||
static int IsWebP(const WebPData* const webp_data) {
|
||||
return (WebPGetInfo(webp_data->bytes, webp_data->size, NULL, NULL) != 0);
|
||||
}
|
||||
|
||||
// Read animated WebP bitstream 'file_str' into 'AnimatedImage' struct.
|
||||
static bool ReadAnimatedWebP(const char filename[], const std::string& file_str,
|
||||
AnimatedImage* const image, bool dump_frames,
|
||||
const char dump_folder[]) {
|
||||
bool ok = false;
|
||||
bool dump_ok = true;
|
||||
static int ReadAnimatedWebP(const char filename[],
|
||||
const WebPData* const webp_data,
|
||||
AnimatedImage* const image, int dump_frames,
|
||||
const char dump_folder[]) {
|
||||
int ok = 0;
|
||||
int dump_ok = 1;
|
||||
uint32_t frame_index = 0;
|
||||
int prev_frame_timestamp = 0;
|
||||
WebPAnimDecoder* dec;
|
||||
WebPAnimInfo anim_info;
|
||||
|
||||
const WebPData webp_data = {
|
||||
reinterpret_cast<const uint8_t*>(file_str.data()), file_str.size()
|
||||
};
|
||||
memset(image, 0, sizeof(*image));
|
||||
|
||||
WebPAnimDecoder* dec = WebPAnimDecoderNew(&webp_data);
|
||||
dec = WebPAnimDecoderNew(webp_data);
|
||||
if (dec == NULL) {
|
||||
fprintf(stderr, "Error parsing image: %s\n", filename);
|
||||
goto End;
|
||||
}
|
||||
|
||||
WebPAnimInfo anim_info;
|
||||
if (!WebPAnimDecoderGetInfo(dec, &anim_info)) {
|
||||
fprintf(stderr, "Error getting global info about the animation\n");
|
||||
goto End;
|
||||
@ -181,25 +219,28 @@ static bool ReadAnimatedWebP(const char filename[], const std::string& file_str,
|
||||
image->bgcolor = anim_info.bgcolor;
|
||||
|
||||
// Allocate frames.
|
||||
AllocateFrames(image, anim_info.frame_count);
|
||||
if (!AllocateFrames(image, anim_info.frame_count)) return 0;
|
||||
|
||||
// Decode frames.
|
||||
while (WebPAnimDecoderHasMoreFrames(dec)) {
|
||||
DecodedFrame* curr_frame;
|
||||
uint8_t* curr_rgba;
|
||||
uint8_t* frame_rgba;
|
||||
int timestamp;
|
||||
|
||||
if (!WebPAnimDecoderGetNext(dec, &frame_rgba, ×tamp)) {
|
||||
fprintf(stderr, "Error decoding frame #%u\n", frame_index);
|
||||
goto End;
|
||||
}
|
||||
DecodedFrame* const curr_frame = &image->frames[frame_index];
|
||||
uint8_t* const curr_rgba = curr_frame->rgba.data();
|
||||
curr_frame = &image->frames[frame_index];
|
||||
curr_rgba = curr_frame->rgba;
|
||||
curr_frame->duration = timestamp - prev_frame_timestamp;
|
||||
curr_frame->is_key_frame = false; // Unused.
|
||||
curr_frame->is_key_frame = 0; // Unused.
|
||||
memcpy(curr_rgba, frame_rgba,
|
||||
image->canvas_width * kNumChannels * image->canvas_height);
|
||||
|
||||
// Needed only because we may want to compare with GIF later.
|
||||
CleanupTransparentPixels(reinterpret_cast<uint32_t*>(curr_rgba),
|
||||
CleanupTransparentPixels((uint32_t*)curr_rgba,
|
||||
image->canvas_width, image->canvas_height);
|
||||
|
||||
if (dump_frames && dump_ok) {
|
||||
@ -224,12 +265,11 @@ static bool ReadAnimatedWebP(const char filename[], const std::string& file_str,
|
||||
// GIF Decoding.
|
||||
|
||||
// Returns true if this is a valid GIF bitstream.
|
||||
static bool IsGIF(const std::string& file_str) {
|
||||
const char* const cstr = file_str.c_str();
|
||||
return file_str.length() > GIF_STAMP_LEN &&
|
||||
(!memcmp(GIF_STAMP, cstr, GIF_STAMP_LEN) ||
|
||||
!memcmp(GIF87_STAMP, cstr, GIF_STAMP_LEN) ||
|
||||
!memcmp(GIF89_STAMP, cstr, GIF_STAMP_LEN));
|
||||
static int IsGIF(const WebPData* const data) {
|
||||
return data->size > GIF_STAMP_LEN &&
|
||||
(!memcmp(GIF_STAMP, data->bytes, GIF_STAMP_LEN) ||
|
||||
!memcmp(GIF87_STAMP, data->bytes, GIF_STAMP_LEN) ||
|
||||
!memcmp(GIF89_STAMP, data->bytes, GIF_STAMP_LEN));
|
||||
}
|
||||
|
||||
#ifdef WEBP_HAVE_GIF
|
||||
@ -247,13 +287,13 @@ static bool IsGIF(const std::string& file_str) {
|
||||
#if !LOCAL_GIF_PREREQ(5, 0)
|
||||
|
||||
// Added in v5.0
|
||||
typedef struct GraphicsControlBlock {
|
||||
typedef struct {
|
||||
int DisposalMode;
|
||||
#define DISPOSAL_UNSPECIFIED 0 // No disposal specified
|
||||
#define DISPOSE_DO_NOT 1 // Leave image in place
|
||||
#define DISPOSE_BACKGROUND 2 // Set area to background color
|
||||
#define DISPOSE_PREVIOUS 3 // Restore to previous content
|
||||
bool UserInputFlag; // User confirmation required before disposal
|
||||
int UserInputFlag; // User confirmation required before disposal
|
||||
int DelayTime; // Pre-display delay in 0.01sec units
|
||||
int TransparentColor; // Palette index for transparency, -1 if none
|
||||
#define NO_TRANSPARENT_COLOR -1
|
||||
@ -269,7 +309,7 @@ static int DGifExtensionToGCB(const size_t GifExtensionLength,
|
||||
gcb->UserInputFlag = (GifExtension[0] & 0x02) != 0;
|
||||
gcb->DelayTime = GifExtension[1] | (GifExtension[2] << 8);
|
||||
if (GifExtension[0] & 0x01) {
|
||||
gcb->TransparentColor = static_cast<int>(GifExtension[3]);
|
||||
gcb->TransparentColor = (int)GifExtension[3];
|
||||
} else {
|
||||
gcb->TransparentColor = NO_TRANSPARENT_COLOR;
|
||||
}
|
||||
@ -283,7 +323,7 @@ static int DGifSavedExtensionToGCB(GifFileType* GifFile, int ImageIndex,
|
||||
return GIF_ERROR;
|
||||
}
|
||||
gcb->DisposalMode = DISPOSAL_UNSPECIFIED;
|
||||
gcb->UserInputFlag = false;
|
||||
gcb->UserInputFlag = 0;
|
||||
gcb->DelayTime = 0;
|
||||
gcb->TransparentColor = NO_TRANSPARENT_COLOR;
|
||||
|
||||
@ -291,7 +331,7 @@ static int DGifSavedExtensionToGCB(GifFileType* GifFile, int ImageIndex,
|
||||
ExtensionBlock* ep = &GifFile->SavedImages[ImageIndex].ExtensionBlocks[i];
|
||||
if (ep->Function == GRAPHICS_EXT_FUNC_CODE) {
|
||||
return DGifExtensionToGCB(
|
||||
ep->ByteCount, reinterpret_cast<const GifByteType*>(ep->Bytes), gcb);
|
||||
ep->ByteCount, (const GifByteType*)ep->Bytes, gcb);
|
||||
}
|
||||
}
|
||||
return GIF_ERROR;
|
||||
@ -313,11 +353,10 @@ static void GIFDisplayError(const GifFileType* const gif, int gif_error) {
|
||||
// libgif 4.2.0 has retired PrintGifError() and added GifErrorString().
|
||||
#if LOCAL_GIF_PREREQ(4, 2)
|
||||
#if LOCAL_GIF_PREREQ(5, 0)
|
||||
// Static string actually, hence the const char* cast.
|
||||
const char* error_str = (const char*)GifErrorString(
|
||||
(gif == NULL) ? gif_error : gif->Error);
|
||||
const char* error_str =
|
||||
GifErrorString((gif == NULL) ? gif_error : gif->Error);
|
||||
#else
|
||||
const char* error_str = (const char*)GifErrorString();
|
||||
const char* error_str = GifErrorString();
|
||||
(void)gif;
|
||||
#endif
|
||||
if (error_str == NULL) error_str = "Unknown error";
|
||||
@ -330,22 +369,23 @@ static void GIFDisplayError(const GifFileType* const gif, int gif_error) {
|
||||
#endif
|
||||
}
|
||||
|
||||
static bool IsKeyFrameGIF(const GifImageDesc& prev_desc, int prev_dispose,
|
||||
const DecodedFrame* const prev_frame,
|
||||
int canvas_width, int canvas_height) {
|
||||
if (prev_frame == NULL) return true;
|
||||
static int IsKeyFrameGIF(const GifImageDesc* prev_desc, int prev_dispose,
|
||||
const DecodedFrame* const prev_frame,
|
||||
int canvas_width, int canvas_height) {
|
||||
if (prev_frame == NULL) return 1;
|
||||
if (prev_dispose == DISPOSE_BACKGROUND) {
|
||||
if (IsFullFrame(prev_desc.Width, prev_desc.Height,
|
||||
if (IsFullFrame(prev_desc->Width, prev_desc->Height,
|
||||
canvas_width, canvas_height)) {
|
||||
return true;
|
||||
return 1;
|
||||
}
|
||||
if (prev_frame->is_key_frame) return true;
|
||||
if (prev_frame->is_key_frame) return 1;
|
||||
}
|
||||
return false;
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int GetTransparentIndexGIF(GifFileType* gif) {
|
||||
GraphicsControlBlock first_gcb = GraphicsControlBlock();
|
||||
GraphicsControlBlock first_gcb;
|
||||
memset(&first_gcb, 0, sizeof(first_gcb));
|
||||
DGifSavedExtensionToGCB(gif, 0, &first_gcb);
|
||||
return first_gcb.TransparentColor;
|
||||
}
|
||||
@ -370,13 +410,15 @@ static uint32_t GetBackgroundColorGIF(GifFileType* gif) {
|
||||
|
||||
// Find appropriate app extension and get loop count from the next extension.
|
||||
static uint32_t GetLoopCountGIF(const GifFileType* const gif) {
|
||||
for (int i = 0; i < gif->ImageCount; ++i) {
|
||||
int i;
|
||||
for (i = 0; i < gif->ImageCount; ++i) {
|
||||
const SavedImage* const image = &gif->SavedImages[i];
|
||||
for (int j = 0; (j + 1) < image->ExtensionBlockCount; ++j) {
|
||||
int j;
|
||||
for (j = 0; (j + 1) < image->ExtensionBlockCount; ++j) {
|
||||
const ExtensionBlock* const eb1 = image->ExtensionBlocks + j;
|
||||
const ExtensionBlock* const eb2 = image->ExtensionBlocks + j + 1;
|
||||
const char* const signature = reinterpret_cast<const char*>(eb1->Bytes);
|
||||
const bool signature_is_ok =
|
||||
const char* const signature = (const char*)eb1->Bytes;
|
||||
const int signature_is_ok =
|
||||
(eb1->Function == APPLICATION_EXT_FUNC_CODE) &&
|
||||
(eb1->ByteCount == 11) &&
|
||||
(!memcmp(signature, "NETSCAPE2.0", 11) ||
|
||||
@ -384,8 +426,8 @@ static uint32_t GetLoopCountGIF(const GifFileType* const gif) {
|
||||
if (signature_is_ok &&
|
||||
eb2->Function == CONTINUE_EXT_FUNC_CODE && eb2->ByteCount >= 3 &&
|
||||
eb2->Bytes[0] == 1) {
|
||||
return (static_cast<uint32_t>(eb2->Bytes[2]) << 8) +
|
||||
(static_cast<uint32_t>(eb2->Bytes[1]) << 0);
|
||||
return ((uint32_t)(eb2->Bytes[2]) << 8) +
|
||||
((uint32_t)(eb2->Bytes[1]) << 0);
|
||||
}
|
||||
}
|
||||
}
|
||||
@ -394,18 +436,19 @@ static uint32_t GetLoopCountGIF(const GifFileType* const gif) {
|
||||
|
||||
// Get duration of 'n'th frame in milliseconds.
|
||||
static int GetFrameDurationGIF(GifFileType* gif, int n) {
|
||||
GraphicsControlBlock gcb = GraphicsControlBlock();
|
||||
GraphicsControlBlock gcb;
|
||||
memset(&gcb, 0, sizeof(gcb));
|
||||
DGifSavedExtensionToGCB(gif, n, &gcb);
|
||||
return gcb.DelayTime * 10;
|
||||
}
|
||||
|
||||
// Returns true if frame 'target' completely covers 'covered'.
|
||||
static bool CoversFrameGIF(const GifImageDesc& target,
|
||||
const GifImageDesc& covered) {
|
||||
return target.Left <= covered.Left &&
|
||||
covered.Left + covered.Width <= target.Left + target.Width &&
|
||||
target.Top <= covered.Top &&
|
||||
covered.Top + covered.Height <= target.Top + target.Height;
|
||||
static int CoversFrameGIF(const GifImageDesc* const target,
|
||||
const GifImageDesc* const covered) {
|
||||
return target->Left <= covered->Left &&
|
||||
covered->Left + covered->Width <= target->Left + target->Width &&
|
||||
target->Top <= covered->Top &&
|
||||
covered->Top + covered->Height <= target->Top + target->Height;
|
||||
}
|
||||
|
||||
static void RemapPixelsGIF(const uint8_t* const src,
|
||||
@ -425,65 +468,72 @@ static void RemapPixelsGIF(const uint8_t* const src,
|
||||
}
|
||||
}
|
||||
|
||||
static bool ReadFrameGIF(const SavedImage* const gif_image,
|
||||
const ColorMapObject* cmap, int transparent_color,
|
||||
int out_stride, uint8_t* const dst) {
|
||||
const GifImageDesc& image_desc = gif_image->ImageDesc;
|
||||
if (image_desc.ColorMap) {
|
||||
cmap = image_desc.ColorMap;
|
||||
}
|
||||
static int ReadFrameGIF(const SavedImage* const gif_image,
|
||||
const ColorMapObject* cmap, int transparent_color,
|
||||
int out_stride, uint8_t* const dst) {
|
||||
const GifImageDesc* image_desc = &gif_image->ImageDesc;
|
||||
const uint8_t* in;
|
||||
uint8_t* out;
|
||||
int j;
|
||||
|
||||
if (image_desc->ColorMap) cmap = image_desc->ColorMap;
|
||||
|
||||
if (cmap == NULL || cmap->ColorCount != (1 << cmap->BitsPerPixel)) {
|
||||
fprintf(stderr, "Potentially corrupt color map.\n");
|
||||
return false;
|
||||
fprintf(stderr, "Potentially corrupt color map.\n");
|
||||
return 0;
|
||||
}
|
||||
|
||||
const uint8_t* in = reinterpret_cast<uint8_t*>(gif_image->RasterBits);
|
||||
uint8_t* out =
|
||||
dst + image_desc.Top * out_stride + image_desc.Left * kNumChannels;
|
||||
in = (const uint8_t*)gif_image->RasterBits;
|
||||
out = dst + image_desc->Top * out_stride + image_desc->Left * kNumChannels;
|
||||
|
||||
for (int j = 0; j < image_desc.Height; ++j) {
|
||||
RemapPixelsGIF(in, cmap, transparent_color, image_desc.Width, out);
|
||||
in += image_desc.Width;
|
||||
out += out_stride;
|
||||
for (j = 0; j < image_desc->Height; ++j) {
|
||||
RemapPixelsGIF(in, cmap, transparent_color, image_desc->Width, out);
|
||||
in += image_desc->Width;
|
||||
out += out_stride;
|
||||
}
|
||||
return true;
|
||||
return 1;
|
||||
}
|
||||
|
||||
// Read animated GIF bitstream from 'filename' into 'AnimatedImage' struct.
|
||||
static bool ReadAnimatedGIF(const char filename[], AnimatedImage* const image,
|
||||
bool dump_frames, const char dump_folder[]) {
|
||||
GifFileType* gif = DGifOpenFileName(filename, NULL);
|
||||
static int ReadAnimatedGIF(const char filename[], AnimatedImage* const image,
|
||||
int dump_frames, const char dump_folder[]) {
|
||||
uint32_t frame_count;
|
||||
uint32_t canvas_width, canvas_height;
|
||||
uint32_t i;
|
||||
int gif_error;
|
||||
GifFileType* gif;
|
||||
|
||||
gif = DGifOpenFileName(filename, NULL);
|
||||
if (gif == NULL) {
|
||||
fprintf(stderr, "Could not read file: %s.\n", filename);
|
||||
return false;
|
||||
return 0;
|
||||
}
|
||||
|
||||
const int gif_error = DGifSlurp(gif);
|
||||
gif_error = DGifSlurp(gif);
|
||||
if (gif_error != GIF_OK) {
|
||||
fprintf(stderr, "Could not parse image: %s.\n", filename);
|
||||
GIFDisplayError(gif, gif_error);
|
||||
DGifCloseFile(gif, NULL);
|
||||
return false;
|
||||
return 0;
|
||||
}
|
||||
|
||||
// Animation properties.
|
||||
image->canvas_width = static_cast<uint32_t>(gif->SWidth);
|
||||
image->canvas_height = static_cast<uint32_t>(gif->SHeight);
|
||||
image->canvas_width = (uint32_t)gif->SWidth;
|
||||
image->canvas_height = (uint32_t)gif->SHeight;
|
||||
if (image->canvas_width > MAX_CANVAS_SIZE ||
|
||||
image->canvas_height > MAX_CANVAS_SIZE) {
|
||||
fprintf(stderr, "Invalid canvas dimension: %d x %d\n",
|
||||
image->canvas_width, image->canvas_height);
|
||||
DGifCloseFile(gif, NULL);
|
||||
return false;
|
||||
return 0;
|
||||
}
|
||||
image->loop_count = GetLoopCountGIF(gif);
|
||||
image->bgcolor = GetBackgroundColorGIF(gif);
|
||||
|
||||
const uint32_t frame_count = static_cast<uint32_t>(gif->ImageCount);
|
||||
frame_count = (uint32_t)gif->ImageCount;
|
||||
if (frame_count == 0) {
|
||||
DGifCloseFile(gif, NULL);
|
||||
return false;
|
||||
return 0;
|
||||
}
|
||||
|
||||
if (image->canvas_width == 0 || image->canvas_height == 0) {
|
||||
@ -494,33 +544,38 @@ static bool ReadAnimatedGIF(const char filename[], AnimatedImage* const image,
|
||||
if (image->canvas_width == 0 || image->canvas_height == 0) {
|
||||
fprintf(stderr, "Invalid canvas size in GIF.\n");
|
||||
DGifCloseFile(gif, NULL);
|
||||
return false;
|
||||
return 0;
|
||||
}
|
||||
}
|
||||
// Allocate frames.
|
||||
AllocateFrames(image, frame_count);
|
||||
|
||||
const uint32_t canvas_width = image->canvas_width;
|
||||
const uint32_t canvas_height = image->canvas_height;
|
||||
canvas_width = image->canvas_width;
|
||||
canvas_height = image->canvas_height;
|
||||
|
||||
// Decode and reconstruct frames.
|
||||
for (uint32_t i = 0; i < frame_count; ++i) {
|
||||
for (i = 0; i < frame_count; ++i) {
|
||||
const int canvas_width_in_bytes = canvas_width * kNumChannels;
|
||||
const SavedImage* const curr_gif_image = &gif->SavedImages[i];
|
||||
GraphicsControlBlock curr_gcb = GraphicsControlBlock();
|
||||
GraphicsControlBlock curr_gcb;
|
||||
DecodedFrame* curr_frame;
|
||||
uint8_t* curr_rgba;
|
||||
|
||||
memset(&curr_gcb, 0, sizeof(curr_gcb));
|
||||
DGifSavedExtensionToGCB(gif, i, &curr_gcb);
|
||||
|
||||
DecodedFrame* const curr_frame = &image->frames[i];
|
||||
uint8_t* const curr_rgba = curr_frame->rgba.data();
|
||||
curr_frame = &image->frames[i];
|
||||
curr_rgba = curr_frame->rgba;
|
||||
curr_frame->duration = GetFrameDurationGIF(gif, i);
|
||||
|
||||
if (i == 0) { // Initialize as transparent.
|
||||
curr_frame->is_key_frame = true;
|
||||
curr_frame->is_key_frame = 1;
|
||||
ZeroFillCanvas(curr_rgba, canvas_width, canvas_height);
|
||||
} else {
|
||||
DecodedFrame* const prev_frame = &image->frames[i - 1];
|
||||
const GifImageDesc& prev_desc = gif->SavedImages[i - 1].ImageDesc;
|
||||
GraphicsControlBlock prev_gcb = GraphicsControlBlock();
|
||||
const GifImageDesc* const prev_desc = &gif->SavedImages[i - 1].ImageDesc;
|
||||
GraphicsControlBlock prev_gcb;
|
||||
memset(&prev_gcb, 0, sizeof(prev_gcb));
|
||||
DGifSavedExtensionToGCB(gif, i - 1, &prev_gcb);
|
||||
|
||||
curr_frame->is_key_frame =
|
||||
@ -530,32 +585,35 @@ static bool ReadAnimatedGIF(const char filename[], AnimatedImage* const image,
|
||||
if (curr_frame->is_key_frame) { // Initialize as transparent.
|
||||
ZeroFillCanvas(curr_rgba, canvas_width, canvas_height);
|
||||
} else {
|
||||
int prev_frame_disposed, curr_frame_opaque;
|
||||
int prev_frame_completely_covered;
|
||||
// Initialize with previous canvas.
|
||||
uint8_t* const prev_rgba = image->frames[i - 1].rgba.data();
|
||||
uint8_t* const prev_rgba = image->frames[i - 1].rgba;
|
||||
CopyCanvas(prev_rgba, curr_rgba, canvas_width, canvas_height);
|
||||
|
||||
// Dispose previous frame rectangle.
|
||||
bool prev_frame_disposed =
|
||||
prev_frame_disposed =
|
||||
(prev_gcb.DisposalMode == DISPOSE_BACKGROUND ||
|
||||
prev_gcb.DisposalMode == DISPOSE_PREVIOUS);
|
||||
bool curr_frame_opaque =
|
||||
curr_frame_opaque =
|
||||
(curr_gcb.TransparentColor == NO_TRANSPARENT_COLOR);
|
||||
bool prev_frame_completely_covered =
|
||||
prev_frame_completely_covered =
|
||||
curr_frame_opaque &&
|
||||
CoversFrameGIF(curr_gif_image->ImageDesc, prev_desc);
|
||||
CoversFrameGIF(&curr_gif_image->ImageDesc, prev_desc);
|
||||
|
||||
if (prev_frame_disposed && !prev_frame_completely_covered) {
|
||||
switch (prev_gcb.DisposalMode) {
|
||||
case DISPOSE_BACKGROUND: {
|
||||
ZeroFillFrameRect(curr_rgba, canvas_width_in_bytes,
|
||||
prev_desc.Left, prev_desc.Top,
|
||||
prev_desc.Width, prev_desc.Height);
|
||||
prev_desc->Left, prev_desc->Top,
|
||||
prev_desc->Width, prev_desc->Height);
|
||||
break;
|
||||
}
|
||||
case DISPOSE_PREVIOUS: {
|
||||
int src_frame_num = i - 2;
|
||||
while (src_frame_num >= 0) {
|
||||
GraphicsControlBlock src_frame_gcb = GraphicsControlBlock();
|
||||
GraphicsControlBlock src_frame_gcb;
|
||||
memset(&src_frame_gcb, 0, sizeof(src_frame_gcb));
|
||||
DGifSavedExtensionToGCB(gif, src_frame_num, &src_frame_gcb);
|
||||
if (src_frame_gcb.DisposalMode != DISPOSE_PREVIOUS) break;
|
||||
--src_frame_num;
|
||||
@ -564,17 +622,17 @@ static bool ReadAnimatedGIF(const char filename[], AnimatedImage* const image,
|
||||
// Restore pixels inside previous frame rectangle to
|
||||
// corresponding pixels in source canvas.
|
||||
uint8_t* const src_frame_rgba =
|
||||
image->frames[src_frame_num].rgba.data();
|
||||
image->frames[src_frame_num].rgba;
|
||||
CopyFrameRectangle(src_frame_rgba, curr_rgba,
|
||||
canvas_width_in_bytes,
|
||||
prev_desc.Left, prev_desc.Top,
|
||||
prev_desc.Width, prev_desc.Height);
|
||||
prev_desc->Left, prev_desc->Top,
|
||||
prev_desc->Width, prev_desc->Height);
|
||||
} else {
|
||||
// Source canvas doesn't exist. So clear previous frame
|
||||
// rectangle to background.
|
||||
ZeroFillFrameRect(curr_rgba, canvas_width_in_bytes,
|
||||
prev_desc.Left, prev_desc.Top,
|
||||
prev_desc.Width, prev_desc.Height);
|
||||
prev_desc->Left, prev_desc->Top,
|
||||
prev_desc->Width, prev_desc->Height);
|
||||
}
|
||||
break;
|
||||
}
|
||||
@ -589,67 +647,65 @@ static bool ReadAnimatedGIF(const char filename[], AnimatedImage* const image,
|
||||
if (!ReadFrameGIF(curr_gif_image, gif->SColorMap, curr_gcb.TransparentColor,
|
||||
canvas_width_in_bytes, curr_rgba)) {
|
||||
DGifCloseFile(gif, NULL);
|
||||
return false;
|
||||
return 0;
|
||||
}
|
||||
|
||||
if (dump_frames) {
|
||||
if (!DumpFrame(filename, dump_folder, i, curr_rgba,
|
||||
canvas_width, canvas_height)) {
|
||||
DGifCloseFile(gif, NULL);
|
||||
return false;
|
||||
return 0;
|
||||
}
|
||||
}
|
||||
}
|
||||
DGifCloseFile(gif, NULL);
|
||||
return true;
|
||||
return 1;
|
||||
}
|
||||
|
||||
#else
|
||||
|
||||
static bool ReadAnimatedGIF(const char filename[], AnimatedImage* const image,
|
||||
bool dump_frames, const char dump_folder[]) {
|
||||
static int ReadAnimatedGIF(const char filename[], AnimatedImage* const image,
|
||||
int dump_frames, const char dump_folder[]) {
|
||||
(void)filename;
|
||||
(void)image;
|
||||
(void)dump_frames;
|
||||
(void)dump_folder;
|
||||
fprintf(stderr, "GIF support not compiled. Please install the libgif-dev "
|
||||
"package before building.\n");
|
||||
return false;
|
||||
return 0;
|
||||
}
|
||||
|
||||
#endif // WEBP_HAVE_GIF
|
||||
|
||||
// -----------------------------------------------------------------------------
|
||||
|
||||
static bool ReadFile(const char filename[], std::string* filestr) {
|
||||
ifstream fin(filename, ios::binary);
|
||||
if (!fin.good()) return false;
|
||||
ostringstream strout;
|
||||
strout << fin.rdbuf();
|
||||
*filestr = strout.str();
|
||||
fin.close();
|
||||
return true;
|
||||
}
|
||||
int ReadAnimatedImage(const char filename[], AnimatedImage* const image,
|
||||
int dump_frames, const char dump_folder[]) {
|
||||
int ok = 0;
|
||||
WebPData webp_data;
|
||||
|
||||
bool ReadAnimatedImage(const char filename[], AnimatedImage* const image,
|
||||
bool dump_frames, const char dump_folder[]) {
|
||||
std::string file_str;
|
||||
if (!ReadFile(filename, &file_str)) {
|
||||
WebPDataInit(&webp_data);
|
||||
memset(image, 0, sizeof(*image));
|
||||
|
||||
if (!ExUtilReadFile(filename, &webp_data.bytes, &webp_data.size)) {
|
||||
fprintf(stderr, "Error reading file: %s\n", filename);
|
||||
return false;
|
||||
return 0;
|
||||
}
|
||||
|
||||
if (IsWebP(file_str)) {
|
||||
return ReadAnimatedWebP(filename, file_str, image, dump_frames,
|
||||
dump_folder);
|
||||
} else if (IsGIF(file_str)) {
|
||||
return ReadAnimatedGIF(filename, image, dump_frames, dump_folder);
|
||||
if (IsWebP(&webp_data)) {
|
||||
ok = ReadAnimatedWebP(filename, &webp_data, image, dump_frames,
|
||||
dump_folder);
|
||||
} else if (IsGIF(&webp_data)) {
|
||||
ok = ReadAnimatedGIF(filename, image, dump_frames, dump_folder);
|
||||
} else {
|
||||
fprintf(stderr,
|
||||
"Unknown file type: %s. Supported file types are WebP and GIF\n",
|
||||
filename);
|
||||
return false;
|
||||
ok = 0;
|
||||
}
|
||||
if (!ok) ClearAnimatedImage(image);
|
||||
WebPDataClear(&webp_data);
|
||||
return ok;
|
||||
}
|
||||
|
||||
static void Accumulate(double v1, double v2, double* const max_diff,
|
||||
@ -660,25 +716,27 @@ static void Accumulate(double v1, double v2, double* const max_diff,
|
||||
}
|
||||
|
||||
void GetDiffAndPSNR(const uint8_t rgba1[], const uint8_t rgba2[],
|
||||
uint32_t width, uint32_t height, bool premultiply,
|
||||
uint32_t width, uint32_t height, int premultiply,
|
||||
int* const max_diff, double* const psnr) {
|
||||
const uint32_t stride = width * kNumChannels;
|
||||
const int kAlphaChannel = kNumChannels - 1;
|
||||
double f_max_diff = 0.;
|
||||
double sse = 0.;
|
||||
for (uint32_t y = 0; y < height; ++y) {
|
||||
for (uint32_t x = 0; x < stride; x += kNumChannels) {
|
||||
uint32_t x, y;
|
||||
for (y = 0; y < height; ++y) {
|
||||
for (x = 0; x < stride; x += kNumChannels) {
|
||||
int k;
|
||||
const size_t offset = y * stride + x;
|
||||
const int alpha1 = rgba1[offset + kAlphaChannel];
|
||||
const int alpha2 = rgba2[offset + kAlphaChannel];
|
||||
Accumulate(alpha1, alpha2, &f_max_diff, &sse);
|
||||
if (!premultiply) {
|
||||
for (int k = 0; k < kAlphaChannel; ++k) {
|
||||
for (k = 0; k < kAlphaChannel; ++k) {
|
||||
Accumulate(rgba1[offset + k], rgba2[offset + k], &f_max_diff, &sse);
|
||||
}
|
||||
} else {
|
||||
// premultiply R/G/B channels with alpha value
|
||||
for (int k = 0; k < kAlphaChannel; ++k) {
|
||||
for (k = 0; k < kAlphaChannel; ++k) {
|
||||
Accumulate(rgba1[offset + k] * alpha1 / 255.,
|
||||
rgba2[offset + k] * alpha2 / 255.,
|
||||
&f_max_diff, &sse);
|
||||
@ -686,11 +744,11 @@ void GetDiffAndPSNR(const uint8_t rgba1[], const uint8_t rgba2[],
|
||||
}
|
||||
}
|
||||
}
|
||||
*max_diff = static_cast<int>(f_max_diff);
|
||||
*max_diff = (int)f_max_diff;
|
||||
if (*max_diff == 0) {
|
||||
*psnr = 99.; // PSNR when images are identical.
|
||||
} else {
|
||||
sse /= stride * height;
|
||||
*psnr = 10. * log10(255. * 255. / sse);
|
||||
*psnr = 4.3429448 * log(255. * 255. / sse);
|
||||
}
|
||||
}
|
||||
@ -16,34 +16,48 @@
|
||||
#include "webp/config.h"
|
||||
#endif
|
||||
|
||||
#include <vector>
|
||||
|
||||
#include "webp/types.h"
|
||||
|
||||
struct DecodedFrame {
|
||||
std::vector<uint8_t> rgba; // Decoded and reconstructed full frame.
|
||||
int duration; // Frame duration in milliseconds.
|
||||
bool is_key_frame; // True if this frame is a key-frame.
|
||||
};
|
||||
#ifdef __cplusplus
|
||||
extern "C" {
|
||||
#endif
|
||||
|
||||
struct AnimatedImage {
|
||||
typedef struct {
|
||||
uint8_t* rgba; // Decoded and reconstructed full frame.
|
||||
int duration; // Frame duration in milliseconds.
|
||||
int is_key_frame; // True if this frame is a key-frame.
|
||||
} DecodedFrame;
|
||||
|
||||
typedef struct {
|
||||
uint32_t canvas_width;
|
||||
uint32_t canvas_height;
|
||||
uint32_t bgcolor;
|
||||
uint32_t loop_count;
|
||||
std::vector<DecodedFrame> frames;
|
||||
};
|
||||
DecodedFrame* frames;
|
||||
uint32_t num_frames;
|
||||
void* raw_mem;
|
||||
} AnimatedImage;
|
||||
|
||||
// Deallocate everything in 'image' (but not the object itself).
|
||||
void ClearAnimatedImage(AnimatedImage* const image);
|
||||
|
||||
// Read animated image file into 'AnimatedImage' struct.
|
||||
// If 'dump_frames' is true, dump frames to 'dump_folder'.
|
||||
bool ReadAnimatedImage(const char filename[], AnimatedImage* const image,
|
||||
bool dump_frames, const char dump_folder[]);
|
||||
// Previous content of 'image' is obliterated.
|
||||
// Upon successful return, content of 'image' must be deleted by
|
||||
// calling 'ClearAnimatedImage'.
|
||||
int ReadAnimatedImage(const char filename[], AnimatedImage* const image,
|
||||
int dump_frames, const char dump_folder[]);
|
||||
|
||||
// Given two RGBA buffers, calculate max pixel difference and PSNR.
|
||||
// If 'premultiply' is true, R/G/B values will be pre-multiplied by the
|
||||
// transparency before comparison.
|
||||
void GetDiffAndPSNR(const uint8_t rgba1[], const uint8_t rgba2[],
|
||||
uint32_t width, uint32_t height, bool premultiply,
|
||||
uint32_t width, uint32_t height, int premultiply,
|
||||
int* const max_diff, double* const psnr);
|
||||
|
||||
#ifdef __cplusplus
|
||||
} // extern "C"
|
||||
#endif
|
||||
|
||||
#endif // WEBP_EXAMPLES_ANIM_UTIL_H_
|
||||
|
||||
@ -62,19 +62,13 @@ EXTRA_FLAGS += -DWEBP_USE_THREAD
|
||||
EXTRA_LIBS += -lpthread
|
||||
|
||||
# Extra flags to emulate C89 strictness with the full ANSI
|
||||
EXTRA_C89_FLAGS = -Wextra -Wold-style-definition
|
||||
EXTRA_C89_FLAGS += -Wmissing-prototypes
|
||||
EXTRA_C89_FLAGS += -Wmissing-declarations
|
||||
EXTRA_C89_FLAGS += -Wdeclaration-after-statement
|
||||
EXTRA_C89_FLAGS += -Wshadow
|
||||
EXTRA_C89_FLAGS += -Wformat-security -Wformat-nonliteral
|
||||
# EXTRA_C89_FLAGS += -Wvla
|
||||
|
||||
EXTRA_CXX_FLAGS = -Wextra
|
||||
EXTRA_CXX_FLAGS += -Wmissing-declarations
|
||||
EXTRA_CXX_FLAGS += -Wshadow
|
||||
EXTRA_CXX_FLAGS += -Wformat-security -Wformat-nonliteral
|
||||
# EXTRA_CXX_FLAGS += -Wvla
|
||||
EXTRA_FLAGS += -Wextra -Wold-style-definition
|
||||
EXTRA_FLAGS += -Wmissing-prototypes
|
||||
EXTRA_FLAGS += -Wmissing-declarations
|
||||
EXTRA_FLAGS += -Wdeclaration-after-statement
|
||||
EXTRA_FLAGS += -Wshadow
|
||||
EXTRA_FLAGS += -Wformat-security -Wformat-nonliteral
|
||||
# EXTRA_FLAGS += -Wvla
|
||||
|
||||
# SSE4.1-specific flags:
|
||||
ifeq ($(HAVE_SSE41), 1)
|
||||
@ -97,11 +91,8 @@ endif
|
||||
AR = ar
|
||||
ARFLAGS = r
|
||||
CPPFLAGS = -Isrc/ -Wall
|
||||
COMMONFLAGS = -O3 -DNDEBUG $(EXTRA_FLAGS)
|
||||
CFLAGS = -O3 -DNDEBUG $(EXTRA_FLAGS)
|
||||
CC = gcc
|
||||
CFLAGS = $(COMMONFLAGS) $(EXTRA_C89_FLAGS)
|
||||
CXX = g++
|
||||
CXXFLAGS = $(COMMONFLAGS) $(EXTRA_CXX_FLAGS)
|
||||
INSTALL = install
|
||||
GROFF = /usr/bin/groff
|
||||
COL = /usr/bin/col
|
||||
@ -299,18 +290,18 @@ HDRS = \
|
||||
OUT_LIBS = examples/libexample_util.a src/libwebpdecoder.a src/libwebp.a
|
||||
EXTRA_LIB = src/libwebpextras.a
|
||||
OUT_EXAMPLES = examples/cwebp examples/dwebp
|
||||
EXTRA_EXAMPLES = examples/gif2webp examples/vwebp examples/webpmux
|
||||
EXTRA_CXX_EXAMPLES = examples/anim_diff
|
||||
EXTRA_EXAMPLES = examples/gif2webp examples/vwebp examples/webpmux \
|
||||
examples/anim_diff
|
||||
|
||||
OUTPUT = $(OUT_LIBS) $(OUT_EXAMPLES)
|
||||
ifeq ($(MAKECMDGOALS),clean)
|
||||
OUTPUT += $(EXTRA_EXAMPLES) $(EXTRA_CXX_EXAMPLES)
|
||||
OUTPUT += $(EXTRA_EXAMPLES)
|
||||
OUTPUT += src/demux/libwebpdemux.a src/mux/libwebpmux.a $(EXTRA_LIB)
|
||||
OUTPUT += examples/libgifdec.a examples/libanim_util.a
|
||||
endif
|
||||
|
||||
ex: $(OUT_EXAMPLES)
|
||||
all: ex $(EXTRA_EXAMPLES) $(EXTRA_CXX_EXAMPLES)
|
||||
all: ex $(EXTRA_EXAMPLES)
|
||||
extras: $(EXTRA_LIB)
|
||||
|
||||
$(EX_FORMAT_DEC_OBJS): %.o: %.h
|
||||
@ -326,9 +317,6 @@ src/utils/bit_writer.o: src/utils/endian_inl.h
|
||||
%.o: %.c $(HDRS)
|
||||
$(CC) $(CFLAGS) $(CPPFLAGS) -c $< -o $@
|
||||
|
||||
%.o: %.cc $(HDRS)
|
||||
$(CXX) $(CXXFLAGS) $(CPPFLAGS) -c $< -o $@
|
||||
|
||||
examples/libanim_util.a: $(ANIM_UTIL_OBJS)
|
||||
examples/libexample_util.a: $(EX_UTIL_OBJS)
|
||||
examples/libgifdec.a: $(GIFDEC_OBJS)
|
||||
@ -349,7 +337,8 @@ examples/vwebp: examples/vwebp.o
|
||||
examples/webpmux: examples/webpmux.o
|
||||
|
||||
examples/anim_diff: examples/libanim_util.a examples/libgifdec.a
|
||||
examples/anim_diff: src/demux/libwebpdemux.a src/libwebp.a
|
||||
examples/anim_diff: src/demux/libwebpdemux.a examples/libexample_util.a
|
||||
examples/anim_diff: src/libwebp.a
|
||||
examples/anim_diff: EXTRA_LIBS += $(GIF_LIBS)
|
||||
examples/anim_diff: EXTRA_FLAGS += -DWEBP_HAVE_GIF
|
||||
examples/cwebp: examples/libexample_util.a src/libwebp.a
|
||||
@ -370,9 +359,6 @@ examples/webpmux: src/libwebpdecoder.a
|
||||
$(OUT_EXAMPLES) $(EXTRA_EXAMPLES):
|
||||
$(CC) -o $@ $^ $(LDFLAGS)
|
||||
|
||||
$(EXTRA_CXX_EXAMPLES):
|
||||
$(CXX) -o $@ $^ $(LDFLAGS)
|
||||
|
||||
dist: DESTDIR := dist
|
||||
dist: OUT_EXAMPLES += $(EXTRA_EXAMPLES)
|
||||
dist: all
|
||||
|
||||
Loading…
Reference in New Issue
Block a user