build: borrow CMake modules from qt-gstreamer for Linux compatibility

Almost certainly breaks Windows compat, but will need to update it anyways to work with the newer GStreamer SDK.
2012-06-13 06:41:44 -04:00
parent cca79973df
commit 7b8742afd8
9 changed files with 611 additions and 206 deletions
--- a/cmake/modules/FindGStreamerPluginsBase.cmake
+++ b/cmake/modules/FindGStreamerPluginsBase.cmake
@@ -0,0 +1,94 @@
+# - Try to find gst-plugins-base
+# Once done this will define
+#
+#  GSTREAMER_PLUGINS_BASE_FOUND - system has gst-plugins-base
+#
+#  And for all the plugin libraries specified in the COMPONENTS
+#  of find_package, this module will define:
+#
+#  GSTREAMER_<plugin_lib>_LIBRARY_FOUND - system has <plugin_lib>
+#  GSTREAMER_<plugin_lib>_LIBRARY - the <plugin_lib> library
+#  GSTREAMER_<plugin_lib>_INCLUDE_DIR - the <plugin_lib> include directory
+#
+# Copyright (c) 2010, Collabora Ltd.
+#   @author George Kiagiadakis <george.kiagiadakis@collabora.co.uk>
+#
+# Redistribution and use is allowed according to the terms of the BSD license.
+# For details see the accompanying COPYING-CMAKE-SCRIPTS file.
+
+set(GSTREAMER_ABI_VERSION "0.10")
+
+
+# Find the pkg-config file for doing the version check
+find_package(PkgConfig)
+
+if (PKG_CONFIG_FOUND)
+    pkg_check_modules(PKG_GSTREAMER_PLUGINS_BASE gstreamer-plugins-base-${GSTREAMER_ABI_VERSION})
+endif()
+
+
+# Find the plugin libraries
+include(MacroFindGStreamerLibrary)
+
+macro(_find_gst_plugins_base_component _name _header)
+    find_gstreamer_library(${_name} ${_header} ${GSTREAMER_ABI_VERSION})
+    set(_GSTREAMER_PLUGINS_BASE_EXTRA_VARIABLES ${_GSTREAMER_PLUGINS_BASE_EXTRA_VARIABLES}
+                                        GSTREAMER_${_name}_LIBRARY GSTREAMER_${_name}_INCLUDE_DIR)
+endmacro()
+
+foreach(_component ${GStreamerPluginsBase_FIND_COMPONENTS})
+    if (${_component} STREQUAL "app")
+        _find_gst_plugins_base_component(APP gstappsrc.h)
+    elseif (${_component} STREQUAL "audio")
+        _find_gst_plugins_base_component(AUDIO audio.h)
+    elseif (${_component} STREQUAL "cdda")
+        _find_gst_plugins_base_component(CDDA gstcddabasesrc.h)
+    elseif (${_component} STREQUAL "fft")
+        _find_gst_plugins_base_component(FFT gstfft.h)
+    elseif (${_component} STREQUAL "floatcast")
+        _find_gst_plugins_base_component(FLOATCAST floatcast.h)
+    elseif (${_component} STREQUAL "netbuffer")
+        _find_gst_plugins_base_component(NETBUFFER gstnetbuffer.h)
+    elseif (${_component} STREQUAL "riff")
+        _find_gst_plugins_base_component(RIFF riff-ids.h)
+    elseif (${_component} STREQUAL "rtp")
+        _find_gst_plugins_base_component(RTP gstrtpbuffer.h)
+    elseif (${_component} STREQUAL "rtsp")
+        _find_gst_plugins_base_component(RTSP gstrtspdefs.h)
+    elseif (${_component} STREQUAL "sdp")
+        _find_gst_plugins_base_component(SDP gstsdp.h)
+    elseif (${_component} STREQUAL "tag")
+        _find_gst_plugins_base_component(TAG tag.h)
+    elseif (${_component} STREQUAL "pbutils")
+        _find_gst_plugins_base_component(PBUTILS pbutils.h)
+    elseif (${_component} STREQUAL "video")
+        _find_gst_plugins_base_component(VIDEO video.h)
+    else()
+        message (AUTHOR_WARNING "FindGStreamer.cmake: Invalid component \"${_component}\" was specified")
+    endif()
+endforeach()
+
+
+# Version check
+if (GStreamerPluginsBase_FIND_VERSION)
+    if (PKG_GSTREAMER_PLUGINS_BASE_FOUND)
+        if("${PKG_GSTREAMER_PLUGINS_BASE_VERSION}" VERSION_LESS "${GStreamerPluginsBase_FIND_VERSION}")
+            message(STATUS "Found gst-plugins-base version ${PKG_GSTREAMER_PLUGINS_BASE_VERSION}, but at least version ${GStreamerPluginsBase_FIND_VERSION} is required")
+            set(GSTREAMER_PLUGINS_BASE_VERSION_COMPATIBLE FALSE)
+        else()
+            set(GSTREAMER_PLUGINS_BASE_VERSION_COMPATIBLE TRUE)
+        endif()
+    else()
+        # We can't make any version checks without pkg-config, just assume version is compatible and hope...
+        set(GSTREAMER_PLUGINS_BASE_VERSION_COMPATIBLE TRUE)
+    endif()
+else()
+    # No version constrain was specified, thus we consider the version compatible
+    set(GSTREAMER_PLUGINS_BASE_VERSION_COMPATIBLE TRUE)
+endif()
+
+
+include(FindPackageHandleStandardArgs)
+find_package_handle_standard_args(GStreamerPluginsBase DEFAULT_MSG
+                                  GSTREAMER_PLUGINS_BASE_VERSION_COMPATIBLE
+                                  ${_GSTREAMER_PLUGINS_BASE_EXTRA_VARIABLES})