ProtoBuffer, UDPListener ...

Protocol Buffer reimplemented to receive image data from third-party apps
The status of the component "UDPListener" is now displayed correctly in WebUI
Global signal names for WebUI added

dependencies/CMakeLists.txt

@@ -9,6 +9,10 @@ if(ENABLE_WS281XPWM)
 		external/rpi_ws281x/rpihw.c)
 endif()
 
+#=============================================================================
+# FLATBUFFER
+#=============================================================================
+
 set(USE_SYSTEM_FLATBUFFERS_LIBS ${DEFAULT_USE_SYSTEM_FLATBUFFERS_LIBS} CACHE BOOL "use flatbuffers library from system")
 
 if (USE_SYSTEM_FLATBUFFERS_LIBS)
@@ -63,3 +67,111 @@ function(compile_flattbuffer_schema SRC_FBS OUTPUT_DIR)
 			DEPENDS flatc)
 	endif()
 endfunction()
+
+#=============================================================================
+# PROTOBUFFER
+#=============================================================================
+
+set(USE_SYSTEM_PROTO_LIBS ${DEFAULT_USE_SYSTEM_PROTO_LIBS} CACHE BOOL "use protobuf library from system")
+
+if (USE_SYSTEM_PROTO_LIBS)
+	find_package(Protobuf REQUIRED)
+	include_directories(${PROTOBUF_INCLUDE_DIRS})
+else ()
+	set(BUILD_SHARED_LIBS OFF CACHE BOOL "Build shared protobuf library")
+	add_subdirectory(external/protobuf)
+
+	if(CMAKE_CROSSCOMPILING)
+		# when crosscompiling import the protoc executable targets from a file generated by a native build
+		option(IMPORT_PROTOC "Protoc export file (protoc_export.cmake) from a native build" "IMPORT_PROTOC-FILE_NOT_FOUND")
+		include(${IMPORT_PROTOC})
+	else()
+		# export the protoc compiler so it can be used when cross compiling
+		export(TARGETS protoc_compiler FILE "${CMAKE_BINARY_DIR}/protoc_export.cmake")
+	endif()
+
+	# define the include for the protobuf library at the parent scope
+	set(PROTOBUF_INCLUDE_DIRS "${CMAKE_CURRENT_SOURCE_DIR}/external/protobuf/src")
+	set(PROTOBUF_INCLUDE_DIRS ${PROTOBUF_INCLUDE_DIRS} PARENT_SCOPE)
+
+	# define the protoc executable at the parent scope
+	get_property(PROTOBUF_PROTOC_EXECUTABLE TARGET protoc_compiler PROPERTY LOCATION)
+	set(PROTOBUF_PROTOC_EXECUTABLE ${PROTOBUF_PROTOC_EXECUTABLE} PARENT_SCOPE)
+endif()
+
+message(STATUS "Using protobuf compiler: " ${PROTOBUF_PROTOC_EXECUTABLE})
+
+#=============================================================================
+# Copyright 2009 Kitware, Inc.
+# Copyright 2009-2011 Philip Lowman <philip@yhbt.com>
+# Copyright 2008 Esben Mose Hansen, Ange Optimization ApS
+#
+# Distributed under the OSI-approved BSD License (the "License");
+# see accompanying file Copyright.txt for details.
+#
+# This software is distributed WITHOUT ANY WARRANTY; without even the
+# implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
+# See the License for more information.
+#=============================================================================
+# (To distribute this file outside of CMake, substitute the full
+#  License text for the above reference.)
+function(PROTOBUF_GENERATE_CPP SRCS HDRS)
+	if(NOT ARGN)
+		message(SEND_ERROR "Error: PROTOBUF_GENERATE_CPP() called without any proto files")
+		return()
+	endif()
+
+	if(PROTOBUF_GENERATE_CPP_APPEND_PATH)
+		# Create an include path for each file specified
+		foreach(FIL ${ARGN})
+			get_filename_component(ABS_FIL ${FIL} ABSOLUTE)
+			get_filename_component(ABS_PATH ${ABS_FIL} PATH)
+			list(FIND _protobuf_include_path ${ABS_PATH} _contains_already)
+			if(${_contains_already} EQUAL -1)
+				list(APPEND _protobuf_include_path -I ${ABS_PATH})
+			endif()
+		endforeach()
+	else()
+		set(_protobuf_include_path -I ${CMAKE_CURRENT_SOURCE_DIR})
+	endif()
+
+	if(DEFINED PROTOBUF_IMPORT_DIRS)
+		foreach(DIR ${PROTOBUF_IMPORT_DIRS})
+			get_filename_component(ABS_PATH ${DIR} ABSOLUTE)
+			list(FIND _protobuf_include_path ${ABS_PATH} _contains_already)
+			if(${_contains_already} EQUAL -1)
+				list(APPEND _protobuf_include_path -I ${ABS_PATH})
+			endif()
+		endforeach()
+	endif()
+
+	if(CMAKE_CROSSCOMPILING OR USE_SYSTEM_PROTO_LIBS)
+		set(PROTOC_DEPENDENCY ${PROTOBUF_PROTOC_EXECUTABLE})
+	else()
+		set(PROTOC_DEPENDENCY protoc_compiler)
+	endif()
+
+	set(${SRCS})
+	set(${HDRS})
+	foreach(FIL ${ARGN})
+		get_filename_component(ABS_FIL ${FIL} ABSOLUTE)
+		get_filename_component(FIL_WE ${FIL} NAME_WE)
+
+		list(APPEND ${SRCS} "${CMAKE_CURRENT_BINARY_DIR}/${FIL_WE}.pb.cc")
+		list(APPEND ${HDRS} "${CMAKE_CURRENT_BINARY_DIR}/${FIL_WE}.pb.h")
+
+		add_custom_command(
+			OUTPUT "${CMAKE_CURRENT_BINARY_DIR}/${FIL_WE}.pb.cc"
+				   "${CMAKE_CURRENT_BINARY_DIR}/${FIL_WE}.pb.h"
+			COMMAND ${PROTOBUF_PROTOC_EXECUTABLE}
+			ARGS --cpp_out ${CMAKE_CURRENT_BINARY_DIR} ${_protobuf_include_path} ${ABS_FIL}
+			DEPENDS ${ABS_FIL} ${PROTOC_DEPENDENCY}
+			COMMENT "Running C++ protocol buffer compiler on ${FIL}"
+			VERBATIM
+		)
+	endforeach()
+
+	set_source_files_properties(${${SRCS}} ${${HDRS}} PROPERTIES GENERATED TRUE)
+	set(${SRCS} ${${SRCS}} PARENT_SCOPE)
+	set(${HDRS} ${${HDRS}} PARENT_SCOPE)
+endfunction()