# - Try to find GStreamer and its plugins # Once done, this will define # # GSTREAMER_FOUND - system has GStreamer # GSTREAMER_INCLUDE_DIRS - the GStreamer include directories # GSTREAMER_LIBRARIES - link these to use GStreamer # # Additionally, gstreamer-base is always looked for and required, and # the following related variables are defined: # # GSTREAMER_BASE_INCLUDE_DIRS - gstreamer-base's include directory # GSTREAMER_BASE_LIBRARIES - link to these to use gstreamer-base # # Optionally, the COMPONENTS keyword can be passed to find_package() # and GStreamer plugins can be looked for. Currently, the following # plugins can be searched, and they define the following variables if # found: # # gstreamer-app: GSTREAMER_APP_INCLUDE_DIRS and GSTREAMER_APP_LIBRARIES # gstreamer-audio: GSTREAMER_AUDIO_INCLUDE_DIRS and GSTREAMER_AUDIO_LIBRARIES # gstreamer-fft: GSTREAMER_FFT_INCLUDE_DIRS and GSTREAMER_FFT_LIBRARIES # gstreamer-interfaces: GSTREAMER_INTERFACES_INCLUDE_DIRS and GSTREAMER_INTERFACES_LIBRARIES # gstreamer-pbutils: GSTREAMER_PBUTILS_INCLUDE_DIRS and GSTREAMER_PBUTILS_LIBRARIES # gstreamer-video: GSTREAMER_VIDEO_INCLUDE_DIRS and GSTREAMER_VIDEO_LIBRARIES # gstreamer-player: GSTREAMER_PLAYER_INCLUDE_DIRS and GSTREAMER_PLAYER_LIBRARIES # # Copyright (C) 2012 Raphael Kubo da Costa # # Redistribution and use in source and binary forms, with or without # modification, are permitted provided that the following conditions # are met: # 1. Redistributions of source code must retain the above copyright # notice, this list of conditions and the following disclaimer. # 2. Redistributions in binary form must reproduce the above copyright # notice, this list of conditions and the following disclaimer in the # documentation and/or other materials provided with the distribution. # # THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDER AND ITS CONTRIBUTORS ``AS # IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, # THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR # PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR ITS # CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, # EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, # PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; # OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, # WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR # OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF # ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. find_package(PkgConfig) # Determine the version in the library name, default is 1.0 set(GST_LIB_VERSION 1.0) if(DEFINED GStreamer_FIND_VERSION AND GStreamer_FIND_VERSION VERSION_LESS 1.0) set(GST_LIB_VERSION 0.10) endif() # Helper macro to find a GStreamer plugin (or GStreamer itself) # _component_prefix is prepended to the _INCLUDE_DIRS and _LIBRARIES variables (eg. "GSTREAMER_AUDIO") # _pkgconfig_name is the component's pkg-config name (eg. "gstreamer", or "gstreamer-video"). # _header is the component's header, relative to the gstreamer-${GST_LIB_VERSION} directory (eg. "gst/gst.h"). # _library is the component's library name (eg. "gstreamer" or "gstvideo") macro(FIND_GSTREAMER_COMPONENT _component_prefix _pkgconfig_name _header _library) pkg_check_modules(PC_${_component_prefix} QUIET ${_pkgconfig_name}-${GST_LIB_VERSION}) find_path(${_component_prefix}_INCLUDE_DIRS NAMES ${_header} HINTS ${PC_${_component_prefix}_INCLUDE_DIRS} ${PC_${_component_prefix}_INCLUDEDIR} PATH_SUFFIXES gstreamer-${GST_LIB_VERSION} ) find_library(${_component_prefix}_LIBRARIES NAMES ${_library}-${GST_LIB_VERSION} HINTS ${PC_${_component_prefix}_LIBRARY_DIRS} ${PC_${_component_prefix}_LIBDIR} ) mark_as_advanced(${_component_prefix}_INCLUDE_DIRS ${_component_prefix}_LIBRARIES) endmacro() # ------------------------ # 1. Find GStreamer itself # ------------------------ # 1.1. Find headers and libraries FIND_GSTREAMER_COMPONENT(GSTREAMER gstreamer gst/gst.h gstreamer) FIND_GSTREAMER_COMPONENT(GSTREAMER_BASE gstreamer-base gst/gst.h gstbase) # 1.2. Check GStreamer version if (GSTREAMER_INCLUDE_DIRS) if (EXISTS "${GSTREAMER_INCLUDE_DIRS}/gst/gstversion.h") file(READ "${GSTREAMER_INCLUDE_DIRS}/gst/gstversion.h" GSTREAMER_VERSION_CONTENTS) string(REGEX MATCH "#define +GST_VERSION_MAJOR +\\(([0-9]+)\\)" _dummy "${GSTREAMER_VERSION_CONTENTS}") set(GSTREAMER_VERSION_MAJOR "${CMAKE_MATCH_1}") string(REGEX MATCH "#define +GST_VERSION_MINOR +\\(([0-9]+)\\)" _dummy "${GSTREAMER_VERSION_CONTENTS}") set(GSTREAMER_VERSION_MINOR "${CMAKE_MATCH_1}") string(REGEX MATCH "#define +GST_VERSION_MICRO +\\(([0-9]+)\\)" _dummy "${GSTREAMER_VERSION_CONTENTS}") set(GSTREAMER_VERSION_MICRO "${CMAKE_MATCH_1}") set(GSTREAMER_VERSION "${GSTREAMER_VERSION_MAJOR}.${GSTREAMER_VERSION_MINOR}.${GSTREAMER_VERSION_MICRO}") endif () endif () # ------------------------- # 2. Find GStreamer plugins # ------------------------- FIND_GSTREAMER_COMPONENT(GSTREAMER_APP gstreamer-app gst/app/gstappsink.h gstapp) FIND_GSTREAMER_COMPONENT(GSTREAMER_AUDIO gstreamer-audio gst/audio/audio.h gstaudio) FIND_GSTREAMER_COMPONENT(GSTREAMER_FFT gstreamer-fft gst/fft/gstfft.h gstfft) FIND_GSTREAMER_COMPONENT(GSTREAMER_INTERFACES gstreamer-interfaces gst/interfaces/mixer.h gstinterfaces) FIND_GSTREAMER_COMPONENT(GSTREAMER_PBUTILS gstreamer-pbutils gst/pbutils/pbutils.h gstpbutils) FIND_GSTREAMER_COMPONENT(GSTREAMER_VIDEO gstreamer-video gst/video/video.h gstvideo) FIND_GSTREAMER_COMPONENT(GSTREAMER_PLAYER gstreamer-player gst/player/player.h gstplayer) # ------------------------------------------------ # 3. Process the COMPONENTS passed to FIND_PACKAGE # ------------------------------------------------ set(_GSTREAMER_REQUIRED_VARS GSTREAMER_VERSION GSTREAMER_INCLUDE_DIRS GSTREAMER_LIBRARIES GSTREAMER_BASE_INCLUDE_DIRS GSTREAMER_BASE_LIBRARIES) foreach (_component ${GStreamer_FIND_COMPONENTS}) set(_gst_component "GSTREAMER_${_component}") string(TOUPPER ${_gst_component} _UPPER_NAME) list(APPEND _GSTREAMER_REQUIRED_VARS ${_UPPER_NAME}_INCLUDE_DIRS ${_UPPER_NAME}_LIBRARIES) endforeach () include(FindPackageHandleStandardArgs) FIND_PACKAGE_HANDLE_STANDARD_ARGS(GStreamer DEFAULT_MSG ${_GSTREAMER_REQUIRED_VARS})