av_device_capabilities, ,av_device_ffversion, ,av_input_audio_device_next, ,av_input_video_device_next, ,av_output_audio_device_next, ,av_output_video_device_next, ,avdevice_app_to_dev_control_message, ,avdevice_capabilities_create, ,avdevice_capabilities_free, ,avdevice_configuration, ,avdevice_dev_to_app_control_message, ,avdevice_free_list_devices, ,avdevice_license, ,avdevice_list_devices, ,avdevice_list_input_sources, ,avdevice_list_output_sinks, ,avdevice_register_all, ,avdevice_version.