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- cmake_minimum_required(VERSION 3.22...3.25)
- legacy_check()
- option(ENABLE_V4L2 "Build OBS with v4l2 support" ON)
- option(ENABLE_UDEV "Build linux-v4l2 with UDEV support" ON)
- if(NOT ENABLE_V4L2)
- target_disable(linux-v4l2)
- return()
- endif()
- find_package(Libv4l2 REQUIRED)
- find_package(FFmpeg REQUIRED COMPONENTS avcodec avutil avformat)
- if(OS_FREEBSD OR OS_OPENBSD)
- set(CMAKE_REQUIRED_INCLUDES "/usr/local/include")
- endif()
- include(CheckCSourceCompiles)
- set(V4L_TEST_SOURCE "#include<linux/videodev2.h>\nint main(){return 0;}")
- check_c_source_compiles("${V4L_TEST_SOURCE}" HAVE_VIDEODEV2_HEADER)
- if(NOT HAVE_VIDEODEV2_HEADER)
- message(FATAL_ERROR "Required system header <linux/videodev2.h> not found.")
- endif()
- add_library(linux-v4l2 MODULE)
- add_library(OBS::v4l2 ALIAS linux-v4l2)
- target_sources(
- linux-v4l2
- PRIVATE linux-v4l2.c v4l2-controls.c v4l2-decoder.c v4l2-helpers.c v4l2-input.c v4l2-output.c
- )
- target_link_libraries(
- linux-v4l2
- PRIVATE OBS::libobs Libv4l2::Libv4l2 FFmpeg::avcodec FFmpeg::avformat FFmpeg::avutil
- )
- if(ENABLE_UDEV)
- find_package(Libudev REQUIRED)
- target_sources(linux-v4l2 PRIVATE v4l2-udev.c)
- target_link_libraries(linux-v4l2 PRIVATE Libudev::Libudev)
- target_compile_definitions(linux-v4l2 PRIVATE HAVE_UDEV)
- endif()
- set_target_properties_obs(linux-v4l2 PROPERTIES FOLDER plugins PREFIX "")
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