Add a GStreamer element that provides a video sink that draws directly on QWidget.

Note that this element is built as an external GStreamer plugin and it is independent from the bindings.

1 files changed, 112 insertions, 0 deletions

diff --git a/cmake/modules/FindGStreamerPlugins.cmake b/cmake/modules/FindGStreamerPlugins.cmake
new file mode 100644
index 0000000..9e7a4d0
--- /dev/null
+++ b/cmake/modules/FindGStreamerPlugins.cmake
@@ -0,0 +1,112 @@
+# - Try to find GStreamer_Plugins
+# Once done this will define
+#
+#  GSTREAMERPLUGINSBASE_FOUND - system has GStreamer_Plugins
+#  GSTREAMERPLUGINSBASE_INCLUDE_DIRS - the GStreamer_Plugins include directories
+#  GSTREAMERPLUGINSBASE_LIBRARIES - the libraries needed to use GStreamer_Plugins
+#
+# The following variables are set for each plugin PLUGINNAME:
+#
+#  GSTREAMER_PLUGIN_PLUGINNAME_FOUND - plugin is found
+#  GSTREAMER_PLUGIN_PLUGINNAME_INCLUDE_DIR - plugin include directory
+#  GSTREAMER_PLUGIN_PLUGINNAME_LIBRARY - the library needed to use plugin
+#
+#  (c)2009 Nokia Corporation
+#  (c)2010 Yury G. Kudryashov <urkud@ya.ru>
+
+FIND_PACKAGE(PkgConfig REQUIRED)
+
+IF (NOT WIN32)
+   # don't make this check required - otherwise you can't use macro_optional_find_package on this one
+   PKG_CHECK_MODULES( PKG_GSTREAMER_PLUGINSBASE gstreamer-plugins-base-0.10 )
+ENDIF (NOT WIN32)
+
+MACRO(MACRO_FIND_GSTREAMER_PLUGIN _plugin _header)
+   STRING(TOUPPER ${_plugin} _upper)
+   IF (NOT WIN32)
+      # don't make this check required - otherwise you can't use macro_optional_find_package on this one
+      PKG_CHECK_MODULES( PKG_GSTREAMER_${_upper} gstreamer-${_plugin}-0.10 )
+   ENDIF (NOT WIN32)
+
+   FIND_LIBRARY(GSTREAMER_PLUGIN_${_upper}_LIBRARY NAMES gst${_plugin}-0.10
+      PATHS
+      ${PKG_GSTREAMER_PLUGINSBASE_LIBRARY_DIRS}
+      ${PKG_GSTREAMER_${_upper}_LIBRARY_DIRS}
+      )
+
+   FIND_PATH(GSTREAMER_PLUGIN_${_upper}_INCLUDE_DIR
+       NAMES gst/${_plugin}/${_header}
+       PATHS
+       ${PKG_GSTREAMER_PLUGINSBASE_INCLUDE_DIRS}
+       ${PKG_GSTREAMER_${_upper}_INCLUDE_DIRS}
+       )
+
+   IF(GSTREAMER_PLUGIN_${_upper}_LIBRARY AND GSTREAMER_PLUGIN_${_upper}_INCLUDE_DIR)
+      SET(GSTREAMER_PLUGIN_${_upper}_FOUND TRUE)
+      LIST(APPEND GSTREAMERPLUGINSBASE_INCLUDE_DIRS GSTREAMER_${_upper}_INCLUDE_DIR)
+      LIST(APPEND GSTREAMERPLUGINSBASE_LIBRARIES GSTREAMER_${_upper}_LIBRARY)
+   ELSE(GSTREAMER_PLUGIN_${_upper}_LIBRARY AND GSTREAMER_PLUGIN_${_upper}_INCLUDE_DIR)
+      MESSAGE(STATUS "Could not find ${_plugin} plugin")
+      MESSAGE(STATUS "${_upper} library: ${GSTREAMER_${_upper}_LIBRARY}")
+      MESSAGE(STATUS "${_upper} include dir: ${GSTREAMER_${_upper}_INCLUDE_DIR}")
+      SET(GSTREAMER_PLUGIN_${_upper}_FOUND FALSE)
+      SET(GSTREAMER_PLUGIN_${_upper}_LIBRARY GSTREAMER_${_upper}_LIBRARY-NOTFOUND)
+      SET(GSTREAMER_PLUGIN_${_upper}_INCLUDE_DIR GSTREAMER_${_upper}_INCLUDE_DIR-NOTFOUND)
+      SET(GSTREAMERPLUGINSBASE_FOUND FALSE)
+   ENDIF(GSTREAMER_PLUGIN_${_upper}_LIBRARY AND GSTREAMER_PLUGIN_${_upper}_INCLUDE_DIR)
+
+   MARK_AS_ADVANCED(GSTREAMER_PLUGIN_${_upper}_LIBRARY
+      GSTREAMER_PLUGIN_${_upper}_INCLUDE_DIR)
+ENDMACRO(MACRO_FIND_GSTREAMER_PLUGIN)
+
+#
+# Base plugins:
+#  audio
+#  cdda
+#  netbuffer
+#  pbutils
+#  riff
+#  rtp
+#  rtsp
+#  sdp
+#  tag
+#  video
+#
+# The gstinterfaces-0.10 library is found by FindGStreamer.cmake
+#
+
+SET(GSTREAMER_PLUGINSBASE_FOUND TRUE)
+MACRO_FIND_GSTREAMER_PLUGIN(audio audio.h)
+MACRO_FIND_GSTREAMER_PLUGIN(cdda gstcddabasesrc.h)
+MACRO_FIND_GSTREAMER_PLUGIN(netbuffer gstnetbuffer.h)
+MACRO_FIND_GSTREAMER_PLUGIN(pbutils pbutils.h)
+MACRO_FIND_GSTREAMER_PLUGIN(riff riff-ids.h)
+MACRO_FIND_GSTREAMER_PLUGIN(rtp gstrtpbuffer.h)
+MACRO_FIND_GSTREAMER_PLUGIN(rtsp gstrtspdefs.h)
+MACRO_FIND_GSTREAMER_PLUGIN(sdp gstsdp.h)
+MACRO_FIND_GSTREAMER_PLUGIN(tag tag.h)
+MACRO_FIND_GSTREAMER_PLUGIN(video video.h)
+
+IF (GSTREAMERPLUGINSBASE_FOUND)
+   LIST(REMOVE_DUPLICATES GSTREAMERPLUGINSBASE_LIBRARIES)
+   LIST(REMOVE_DUPLICATES GSTREAMERPLUGINSBASE_INCLUDE_DIRS)
+   IF (NOT GStreamer_Plugins_FIND_QUIETLY)
+      MESSAGE(STATUS "Found GStreamer Plugins:
+    ${GSTREAMER_PLUGIN_AUDIO_LIBRARIES}
+    ${GSTREAMER_PLUGIN_CDDA_LIBRARIES}
+    ${GSTREAMER_PLUGIN_NETBUFFER_LIBRARIES}
+    ${GSTREAMER_PLUGIN_PBUTILS_LIBRARIES}
+    ${GSTREAMER_PLUGIN_RIFF_LIBRARIES}
+    ${GSTREAMER_PLUGIN_RTP_LIBRARIES}
+    ${GSTREAMER_PLUGIN_RTSP_LIBRARIES}
+    ${GSTREAMER_PLUGIN_SDP_LIBRARIES}
+    ${GSTREAMER_PLUGIN_TAG_LIBRARIES}
+    ${GSTREAMER_PLUGIN_VIDEO_LIBRARIES}")
+   ENDIF (NOT GStreamer_Plugins_FIND_QUIETLY)
+ELSE (GSTREAMERPLUGINSBASE_FOUND)
+   SET(GSTREAMERPLUGINSBASE_LIBRARIES GSTREAMERPLUGINSBASE_LIBRARIES-NOTFOUND)
+   SET(GSTREAMERPLUGINSBASE_INCLUDE_DIRS GSTREAMERPLUGINSBASE_INCLUDE_DIRS-NOTFOUND)
+   IF (GStreamer_Plugins_FIND_REQUIRED)
+      MESSAGE(SEND_ERROR "Could NOT find GStreamer Plugins")
+   ENDIF (GStreamer_Plugins_FIND_REQUIRED)
+ENDIF (GSTREAMERPLUGINSBASE_FOUND)