cmake/FindGStreamer_1_0.cmake

   1 # - Try to find Gstreamer and its plugins
   2 # Once done, this will define
   3 #
   4 #  GSTREAMER_1_0_FOUND - system has Gstreamer
   5 #  GSTREAMER_1_0_INCLUDE_DIRS - the Gstreamer include directories
   6 #  GSTREAMER_1_0_LIBRARIES - link these to use Gstreamer
   7 #
   8 # Additionally, gstreamer-base is always looked for and required, and
   9 # the following related variables are defined:
  10 #
  11 #  GSTREAMER_1_0_BASE_INCLUDE_DIRS - gstreamer-base's include directory
  12 #  GSTREAMER_1_0_BASE_LIBRARIES - link to these to use gstreamer-base
  13 #
  14 # Optionally, the COMPONENTS keyword can be passed to find_package()
  15 # and Gstreamer plugins can be looked for.  Currently, the following
  16 # plugins can be searched, and they define the following variables if
  17 # found:
  18 #
  19 #  gstreamer-app:        GSTREAMER_1_0_APP_INCLUDE_DIRS and GSTREAMER_1_0_APP_LIBRARIES
  20 #  gstreamer-audio:      GSTREAMER_1_0_AUDIO_INCLUDE_DIRS and GSTREAMER_1_0_AUDIO_LIBRARIES
  21 #  gstreamer-fft:        GSTREAMER_1_0_FFT_INCLUDE_DIRS and GSTREAMER_1_0_FFT_LIBRARIES
  22 #  gstreamer-pbutils:    GSTREAMER_1_0_PBUTILS_INCLUDE_DIRS and GSTREAMER_1_0_PBUTILS_LIBRARIES
  23 #  gstreamer-video:      GSTREAMER_1_0_VIDEO_INCLUDE_DIRS and GSTREAMER_1_0_VIDEO_LIBRARIES
  24 #
  25 # Copyright (C) 2012 Raphael Kubo da Costa <rakuco@webkit.org>
  26 #
  27 # Redistribution and use in source and binary forms, with or without
  28 # modification, are permitted provided that the following conditions
  29 # are met:
  30 # 1.  Redistributions of source code must retain the above copyright
  31 #     notice, this list of conditions and the following disclaimer.
  32 # 2.  Redistributions in binary form must reproduce the above copyright
  33 #     notice, this list of conditions and the following disclaimer in the
  34 #     documentation and/or other materials provided with the distribution.
  35 #
  36 # THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDER AND ITS CONTRIBUTORS ``AS
  37 # IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
  38 # THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  39 # PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR ITS
  40 # CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
  41 # EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
  42 # PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
  43 # OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
  44 # WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
  45 # OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
  46 # ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  47
  48 find_package(PkgConfig)
  49
  50 # The minimum Gstreamer version we support.
  51 set(GSTREAMER_1_0_MINIMUM_VERSION 1.0.5)
  52
  53 # Helper macro to find a Gstreamer plugin (or Gstreamer itself)
  54 #   _component_prefix is prepended to the _INCLUDE_DIRS and _LIBRARIES variables (eg. "GSTREAMER_1_0_AUDIO")
  55 #   _pkgconfig_name is the component's pkg-config name (eg. "gstreamer-1.0", or "gstreamer-video-1.0").
  56 #   _library is the component's library name (eg. "gstreamer-1.0" or "gstvideo-1.0")
  57 macro(FIND_GSTREAMER_COMPONENT _component_prefix _pkgconfig_name _library)
  58     # FIXME: The QUIET keyword can be used once we require CMake 2.8.2.
  59
  60     string(REGEX MATCH "(.*)>=(.*)" _dummy "${_pkgconfig_name}")
  61     if ("${CMAKE_MATCH_2}" STREQUAL "")
  62         pkg_check_modules(PC_${_component_prefix} "${_pkgconfig_name} >= ${GSTREAMER_1_0_MINIMUM_VERSION}")
  63     else ()
  64         pkg_check_modules(PC_${_component_prefix} ${_pkgconfig_name})
  65     endif ()
  66     set(${_component_prefix}_INCLUDE_DIRS ${PC_${_component_prefix}_INCLUDE_DIRS})
  67
  68     find_library(${_component_prefix}_LIBRARIES
  69         NAMES ${_library} gstreamer_android
  70         HINTS ${PC_${_component_prefix}_LIBRARY_DIRS} ${PC_${_component_prefix}_LIBDIR} ${GSTREAMER_1_0_ROOT_DIR}
  71     )
  72 endmacro()
  73
  74 # ------------------------
  75 # 1. Find Gstreamer itself
  76 # ------------------------
  77
  78 # 1.1. Find headers and libraries
  79 set(GLIB_ROOT_DIR ${GSTREAMER_1_0_ROOT_DIR})
  80 find_package(Glib REQUIRED)
  81 FIND_GSTREAMER_COMPONENT(GSTREAMER_1_0 gstreamer-1.0 gstreamer-1.0)
  82 FIND_GSTREAMER_COMPONENT(GSTREAMER_1_0_BASE gstreamer-base-1.0 gstbase-1.0)
  83
  84 # 1.2. Check Gstreamer version
  85 if (GSTREAMER_1_0_INCLUDE_DIRS)
  86     if (EXISTS "${GSTREAMER_1_0_INCLUDE_DIRS}/gst/gstversion.h")
  87         file(READ "${GSTREAMER_1_0_INCLUDE_DIRS}/gst/gstversion.h" GSTREAMER_VERSION_CONTENTS)
  88
  89         string(REGEX MATCH "#define +GST_VERSION_MAJOR +\\(([0-9]+)\\)" _dummy "${GSTREAMER_VERSION_CONTENTS}")
  90         set(GSTREAMER_1_0_VERSION_MAJOR "${CMAKE_MATCH_1}")
  91
  92         string(REGEX MATCH "#define +GST_VERSION_MINOR +\\(([0-9]+)\\)" _dummy "${GSTREAMER_1_0_VERSION_CONTENTS}")
  93         set(GSTREAMER_1_0_VERSION_MINOR "${CMAKE_MATCH_1}")
  94
  95         string(REGEX MATCH "#define +GST_VERSION_MICRO +\\(([0-9]+)\\)" _dummy "${GSTREAMER_1_0_VERSION_CONTENTS}")
  96         set(GSTREAMER_1_0_VERSION_MICRO "${CMAKE_MATCH_1}")
  97
  98         set(GSTREAMER_1_0_VERSION "${GSTREAMER_1_0_VERSION_MAJOR}.${GSTREAMER_1_0_VERSION_MINOR}.${GSTREAMER_1_0_VERSION_MICRO}")
  99     endif ()
 100 endif ()
 101
 102 # FIXME: With CMake 2.8.3 we can just pass GSTREAMER_1_0_VERSION to FIND_PACKAGE_HANDLE_STANDARD_ARGS as VERSION_VAR
 103 #        and remove the version check here (GSTREAMER_1_0_MINIMUM_VERSION would be passed to FIND_PACKAGE).
 104 set(VERSION_OK TRUE)
 105 if ("${GSTREAMER_1_0_VERSION}" VERSION_LESS "${GSTREAMER_1_0_MINIMUM_VERSION}")
 106     set(VERSION_OK FALSE)
 107 endif ()
 108
 109 # -------------------------
 110 # 2. Find Gstreamer plugins
 111 # -------------------------
 112
 113 FIND_GSTREAMER_COMPONENT(GSTREAMER_1_0_APP gstreamer-app-1.0 gstapp-1.0)
 114 FIND_GSTREAMER_COMPONENT(GSTREAMER_1_0_AUDIO gstreamer-audio-1.0 gstaudio-1.0)
 115 FIND_GSTREAMER_COMPONENT(GSTREAMER_1_0_FFT gstreamer-fft-1.0 gstfft-1.0)
 116 FIND_GSTREAMER_COMPONENT(GSTREAMER_1_0_PBUTILS gstreamer-pbutils-1.0 gstpbutils-1.0)
 117 FIND_GSTREAMER_COMPONENT(GSTREAMER_1_0_VIDEO gstreamer-video-1.0 gstvideo-1.0)
 118
 119 # ------------------------------------------------
 120 # 3. Process the COMPONENTS passed to FIND_PACKAGE
 121 # ------------------------------------------------
 122 set(_GSTREAMER_1_0_REQUIRED_VARS
 123         Glib_INCLUDE_DIRS
 124         Glib_LIBRARIES
 125         GSTREAMER_1_0_INCLUDE_DIRS
 126         GSTREAMER_1_0_LIBRARIES
 127         VERSION_OK
 128         GSTREAMER_1_0_BASE_INCLUDE_DIRS
 129         GSTREAMER_1_0_BASE_LIBRARIES)
 130
 131 include(FindPackageHandleStandardArgs)
 132 FIND_PACKAGE_HANDLE_STANDARD_ARGS(GSTREAMER_1_0 DEFAULT_MSG GSTREAMER_1_0_LIBRARIES GSTREAMER_1_0_INCLUDE_DIRS)
 133
 134 list(APPEND GSTREAMER_1_0_INCLUDE_DIRS ${Glib_INCLUDE_DIRS})
 135 list(APPEND GSTREAMER_1_0_LIBRARIES ${Glib_LIBRARIES})
 136 list(APPEND GSTREAMER_1_0_INCLUDE_DIRS ${GSTREAMER_1_0_BASE_INCLUDE_DIRS})
 137 list(APPEND GSTREAMER_1_0_LIBRARIES ${GSTREAMER_1_0_BASE_LIBRARIES})
 138 list(APPEND GSTREAMER_1_0_INCLUDE_DIRS ${GSTREAMER_1_0_APP_INCLUDE_DIRS})
 139 list(APPEND GSTREAMER_1_0_LIBRARIES ${GSTREAMER_1_0_APP_LIBRARIES})
 140 list(APPEND GSTREAMER_1_0_INCLUDE_DIRS ${GSTREAMER_1_0_VIDEO_INCLUDE_DIRS})
 141 list(APPEND GSTREAMER_1_0_LIBRARIES ${GSTREAMER_1_0_VIDEO_LIBRARIES})
 142
 143 foreach (_component ${Gstreamer_FIND_COMPONENTS})
 144     set(_gst_component "GSTREAMER_1_0_${_component}")
 145     string(TOUPPER ${_gst_component} _UPPER_NAME)
 146
 147     FIND_PACKAGE_HANDLE_STANDARD_ARGS(${_UPPER_NAME} DEFAULT_MSG ${_UPPER_NAME}_INCLUDE_DIRS ${_UPPER_NAME}_LIBRARIES)
 148     list(APPEND GSTREAMER_1_0_INCLUDE_DIRS ${${_UPPER_NAME}_INCLUDE_DIRS})
 149     list(APPEND GSTREAMER_1_0_LIBRARIES ${${_UPPER_NAME}_LIBRARIES})
 150 endforeach ()
 151
 152 MARK_AS_ADVANCED(GSTREAMER_1_0_INCLUDE_DIRS GSTREAMER_1_0_LIBRARIES GSTREAMER_1_0_BASE_LIBRARY GSTREAMER_1_0_APP_LIBRARY)
 153