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vwebp_sdl: simple viewer based on SDL

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Uses WebPToSDL() generic function defined in vwebp_sdl.[ch].
This function is not included in the libextras library, because it
would bring in an SDL dependency. Probably too heavy for now.

WebPToSDL() is separate, because it will be called used by the javascript
version of libwebp (through emscripten build rules)

Change-Id: Ic85b36f8ce4784f46023656278f6480be6802834
This commit is contained in:
Pascal Massimino
2017-01-30 13:33:35 +01:00
parent 84cef16f47
commit 6524fcd614
7 changed files with 288 additions and 5 deletions
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40
configure.ac
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@ -428,6 +428,44 @@ AS_IF([test "x$enable_gl" != "xno"], [
])
AM_CONDITIONAL([BUILD_VWEBP], [test "$build_vwebp" = "yes"])
dnl === check for SDL support ===
AC_ARG_ENABLE([sdl],
AS_HELP_STRING([--disable-sdl],
[Disable detection of SDL support
@<:@default=auto@:>@]))
AS_IF([test "x$enable_sdl" != "xno"], [
CLEAR_LIBVARS([SDL])
WITHLIB_OPTION([sdl], [SDL])
$sdl_header = "no";
LIBCHECK_PROLOGUE([SDL])
AC_CHECK_HEADER([SDL/SDL.h], [sdl_header="SDL_SDL.h"],
[AC_CHECK_HEADER([SDL.h], [sdl_header="SDL.h"],
[AC_MSG_WARN(SDL library not available - no sdl.h)])])
if test x"$sdl_header" != "xno" ; then
AC_CHECK_LIB(SDL, SDL_Init,
[SDL_LIBS="-lSDL"
SDL_INCLUDES="-DWEBP_HAVE_SDL"
AC_DEFINE(WEBP_HAVE_SDL, [1],
[Set to 1 if SDL library is installed])
sdl_support=yes
],
AC_MSG_WARN(Optional SDL library not found),
[$MATH_LIBS]),
if test x"$sdl_header" == "xSDL.h" ; then
SDL_INCLUDES="$SDL_INCLUDES -DWEBP_HAVE_JUST_SDL_H"
fi
fi
LIBCHECK_EPILOGUE([SDL])
if test "$sdl_support" = "yes" ; then
build_vwebp_sdl=yes
fi
])
AM_CONDITIONAL([BUILD_VWEBP_SDL], [test "$build_vwebp_sdl" = "yes"])
dnl === check for PNG support ===
AC_ARG_ENABLE([png], AS_HELP_STRING([--disable-png],
@ -718,4 +756,6 @@ gif2webp : ${build_gif2webp-no}
img2webp : ${build_img2webp-no}
webpmux : ${enable_libwebpmux-no}
vwebp : ${build_vwebp-no}
SDL support : ${sdl_support-no}
vwebp_sdl : ${build_vwebp_sdl-no}
])