cmake_minimum_required(VERSION "2.8.0")

# TODO: use pkg-config
# ---
# INCLUDE(FindPkgConfig)
# pkg_check_modules(GLIB2 glib-2.0)
# pkg_check_modules(GSTREAMER gstreamer-0.10)
# ---

list(APPEND CMAKE_MODULE_PATH ${CMAKE_SOURCE_DIR}/cmake/modules)

project (GST-PLUGINS-GL)

if (WIN32)
  set(OSSBUILD_SDK_DIR $ENV{OSSBUILD_GSTREAMER_SDK_DIR})
  if (OSSBUILD_SDK_DIR)
    set(OSSBUILD_SDK_INCLUDE_DIR ${OSSBUILD_SDK_DIR}/include)
    #set(CMAKE_PREFIX_PATH ${OSSBUILD_SDK_DIR})
    set(CMAKE_INCLUDE_PATH ${OSSBUILD_SDK_INCLUDE_DIR})
    set(CMAKE_INCLUDE_PATH ${CMAKE_INCLUDE_PATH} ${OSSBUILD_SDK_INCLUDE_DIR}/glib-2.0)
    set(CMAKE_INCLUDE_PATH ${CMAKE_INCLUDE_PATH} ${OSSBUILD_SDK_INCLUDE_DIR}/gstreamer-0.10)
    set(CMAKE_INCLUDE_PATH ${CMAKE_INCLUDE_PATH} ${OSSBUILD_SDK_INCLUDE_DIR}/libxml2)
  endif (OSSBUILD_SDK_DIR)
  set(OSSBUILD_DIR $ENV{OSSBUILD_GSTREAMER_DIR})
  if (OSSBUILD_DIR)
    #set(ENV{GSTREAMER_DIR} ${OSSBUILD_DIR})
    set(CMAKE_LIBRARY_PATH ${OSSBUILD_DIR}/bin)
    set(JPEG_NAMES jpeg-8)
    #set(FREETYPE_NAMES freetype-6)
    message(STATUS ${CMAKE_LIBRARY_PATH})
  endif (OSSBUILD_DIR)
endif (WIN32)

# built-in
find_package(OpenGL REQUIRED)
find_package(GTK2 REQUIRED)
find_package(Glib2 REQUIRED)
find_package(LibXml2 REQUIRED)
find_package(JPEG REQUIRED)
find_package(PNG REQUIRED)
find_package(ZLIB REQUIRED)

# home made
find_package(Glib2 REQUIRED)
find_package(Gstreamer REQUIRED)
find_package(Glew REQUIRED)
find_package(LibIconv REQUIRED)
find_package(ATK REQUIRED)
find_package(Cairo REQUIRED)

function(check_package name LEVEL)
  if (${name}_FOUND)
    message(STATUS "Found ${name}... YES")
  else (${name}_FOUND)
    message(STATUS "Found ${name}... NO")
    if (LEVEL)
      if (WIN32)
        message(FATAL_ERROR "You should set the env variable ${name}_DIR")
      else (WIN32)
        message(FATAL_ERROR "You should install ${name} dev package")
      endif (WIN32)
    endif (LEVEL)
  endif (${name}_FOUND)
endfunction(check_package)

# required packages
check_package(GLIB2 1)
check_package(GSTREAMER 1)
check_package(OPENGL 1)
check_package(GLEW 1)
check_package(PNG 1)
if (WIN32)
check_package(ZLIB 1)
endif (WIN32)

# conditionnal required packages
INCLUDE (CheckIncludeFiles)
CHECK_INCLUDE_FILES (${GSTREAMER_DIR}/include/gst/gstconfig.h GST_USING_BINARY_REGISTRY)
if (NOT GST_USING_BINARY_REGISTRY)
check_package(LIBXML2 1)
check_package(LIBICONV 1)
endif (NOT GST_USING_BINARY_REGISTRY)

# optionnal packages
check_package(GTK2 0)
check_package(ATK 0)
check_package(CAIRO 0)

# debug
#message("****" ${GLIB2_INCLUDE_DIR})
#message("****" ${GLIB2_LIBRARIES})
#message("****" ${LIBXML2_INCLUDE_DIR})
#message("****" ${LIBICONV_INCLUDE_DIR})
#message("****" ${GSTREAMER_INCLUDE_DIR})
#message("****" ${GSTREAMER_LIBRARIES})
#message("****" ${OPENGL_INCLUDE_DIR})
#message("****" ${OPENGL_LIBRARIES})
#message("****" ${GLEW_INCLUDE_DIR})
#message("****" ${GLEW_LIBRARY})
#message("****" ${PNG_INCLUDE_DIR})
#message("****" ${PNG_LIBRARY})
#message("****" ${GTK2_INCLUDE_DIR})
#message("****" ${GTK2_LIBRARIES})
#message("****" ${ATK_INCLUDE_DIR})
#message("****" ${CAIRO_INCLUDE_DIR})

add_subdirectory (gst-libs)
add_subdirectory (gst)

#add_dependencies(gstgl)

#FIXME: generate config.h
add_definitions(-DHAVE_CONFIG_H)