option(ENABLE_RNNOISE "Enable building with RNNoise noise supression filter" ON)

if(ENABLE_RNNOISE)
  if(OS_WINDOWS OR OS_MACOS)
    find_package(Librnnoise REQUIRED)
  else()
    find_package(Librnnoise)

    if(NOT TARGET Librnnoise::Librnnoise)
      message(WARNING "No RNNoise library found. Using internal RNNoise version instead.")
      add_library(obs-rnnoise OBJECT)

      target_sources(
        obs-rnnoise
        PRIVATE
          rnnoise/src/_kiss_fft_guts.h
          rnnoise/src/arch.h
          rnnoise/src/celt_lpc.c
          rnnoise/src/celt_lpc.h
          rnnoise/src/common.h
          rnnoise/src/denoise.c
          rnnoise/src/kiss_fft.c
          rnnoise/src/kiss_fft.h
          rnnoise/src/opus_types.h
          rnnoise/src/pitch.c
          rnnoise/src/pitch.h
          rnnoise/src/rnn.c
          rnnoise/src/rnn.h
          rnnoise/src/rnn_data.c
          rnnoise/src/rnn_data.h
          rnnoise/src/rnn_reader.c
          rnnoise/src/tansig_table.h
        PUBLIC rnnoise/include/rnnoise.h
      )

      add_library(Librnnoise::Librnnoise ALIAS obs-rnnoise)

      target_include_directories(obs-rnnoise PUBLIC "${CMAKE_CURRENT_SOURCE_DIR}/rnnoise/include")

      target_compile_definitions(obs-rnnoise PUBLIC COMPILE_OPUS)

      target_compile_options(obs-rnnoise PRIVATE -Wno-newline-eof -Wno-error=null-dereference)

      set_target_properties(obs-rnnoise PROPERTIES FOLDER plugins/obs-filters/rnnoise POSITION_INDEPENDENT_CODE TRUE)
    endif()
  endif()

  target_sources(obs-filters PRIVATE noise-suppress-filter.c)

  target_link_libraries(obs-filters PRIVATE Librnnoise::Librnnoise)

  target_enable_feature(obs-filters "RNNoise noise suppression" LIBRNNOISE_ENABLED HAS_NOISEREDUCTION)
else()
  target_disable_feature(obs-filters "RNNoise noise suppression")
endif()
