cmake: Replace FFMpeg modules with single module

Now using components instead of one find_package call per module

plugins/obs-ffmpeg/CMakeLists.txt

@@ -5,25 +5,9 @@ if(WIN32)
 		w32-pthreads)
 endif()
 
-find_package(Libavcodec REQUIRED)
-include_directories(${LIBAVCODEC_INCLUDE_DIRS})
-add_definitions(${LIBAVCODEC_DEFINITIONS})
-
-find_package(Libavutil REQUIRED)
-include_directories(${LIBAVUTIL_INCLUDE_DIRS})
-add_definitions(${LIBAVUTIL_DEFINITIONS})
-
-find_package(Libswscale REQUIRED)
-include_directories(${LIBSWSCALE_INCLUDE_DIRS})
-add_definitions(${LIBSWSCALE_DEFINITIONS})
-
-find_package(Libavformat REQUIRED)
-include_directories(${LIBAVFORMAT_INCLUDE_DIRS})
-add_definitions(${LIBAVFORMAT_DEFINITIONS})
-
-find_package(Libswresample REQUIRED)
-include_directories(${LIBSWRESAMPLE_INCLUDE_DIRS})
-add_definitions(${LIBSWRESAMPLE_DEFINITIONS})
+find_package(FFMpeg REQUIRED
+	COMPONENTS avcodec avutil swscale avformat swresample)
+include_directories(${FFMPEG_INCLUDE_DIRS})
 
 set(obs-ffmpeg_HEADERS
 	obs-ffmpeg-formats.h
@@ -39,10 +23,6 @@ add_library(obs-ffmpeg MODULE
 target_link_libraries(obs-ffmpeg
 	libobs
 	${obs-ffmpeg_PLATFORM_DEPS}
-	${LIBAVCODEC_LIBRARIES}
-	${LIBAVUTIL_LIBRARIES}
-	${LIBSWSCALE_LIBRARIES}
-	${LIBAVFORMAT_LIBRARIES}
-	${LIBSWRESAMPLE_LIBRARIES})
+	${FFMPEG_LIBRARIES})
 
 install_obs_plugin_with_data(obs-ffmpeg data)