Merge pull request opencv#21294 from mshabunin:fix-gst-audio

Author: alalek

modules/videoio/cmake/detect_gstreamer.cmake

@@ -93,11 +93,12 @@ if(NOT HAVE_GSTREAMER AND PKG_CONFIG_FOUND)
   ocv_check_modules(GSTREAMER_riff gstreamer-riff-1.0)
   ocv_check_modules(GSTREAMER_pbutils gstreamer-pbutils-1.0)
   ocv_check_modules(GSTREAMER_video gstreamer-video-1.0)
-  if(GSTREAMER_base_FOUND AND GSTREAMER_app_FOUND AND GSTREAMER_riff_FOUND AND GSTREAMER_pbutils_FOUND AND GSTREAMER_video_FOUND)
+  ocv_check_modules(GSTREAMER_audio gstreamer-audio-1.0)
+  if(GSTREAMER_base_FOUND AND GSTREAMER_app_FOUND AND GSTREAMER_riff_FOUND AND GSTREAMER_pbutils_FOUND AND GSTREAMER_video_FOUND AND GSTREAMER_audio_FOUND)
     set(HAVE_GSTREAMER TRUE)
     set(GSTREAMER_VERSION ${GSTREAMER_base_VERSION})  # informational
-    set(GSTREAMER_LIBRARIES ${GSTREAMER_base_LIBRARIES} ${GSTREAMER_app_LIBRARIES} ${GSTREAMER_riff_LIBRARIES} ${GSTREAMER_pbutils_LIBRARIES} ${GSTREAMER_video_LIBRARIES})
-    set(GSTREAMER_INCLUDE_DIRS ${GSTREAMER_base_INCLUDE_DIRS} ${GSTREAMER_app_INCLUDE_DIRS} ${GSTREAMER_riff_INCLUDE_DIRS} ${GSTREAMER_pbutils_INCLUDE_DIRS} ${GSTREAMER_video_INCLUDE_DIRS})
+    set(GSTREAMER_LIBRARIES ${GSTREAMER_base_LIBRARIES} ${GSTREAMER_app_LIBRARIES} ${GSTREAMER_riff_LIBRARIES} ${GSTREAMER_pbutils_LIBRARIES} ${GSTREAMER_video_LIBRARIES} ${GSTREAMER_audio_LIBRARIES})
+    set(GSTREAMER_INCLUDE_DIRS ${GSTREAMER_base_INCLUDE_DIRS} ${GSTREAMER_app_INCLUDE_DIRS} ${GSTREAMER_riff_INCLUDE_DIRS} ${GSTREAMER_pbutils_INCLUDE_DIRS} ${GSTREAMER_video_INCLUDE_DIRS} ${GSTREAMER_audio_INCLUDE_DIRS})
   endif()
 endif()