enumerate_configs()

std::vector< CameraConfig > MayaFlux::IO::FFmpegCameraReader::enumerate_configs ( ) const

overridevirtual

Discover ready-to-open camera configurations without starting capture.

Implements MayaFlux::IO::CameraSource.

Definition at line 57 of file FFmpegCameraDiscovery.cpp.

{
#ifdef MAYAFLUX_PLATFORM_MACOS
    return enumerate_macos_cameras();
#else
    std::vector<CameraConfig> configs;
 
    avdevice_register_all();
    const AVInputFormat* format = av_find_input_format(std::string(CAMERA_FORMAT).c_str());
    AVDeviceInfoList* list = nullptr;
    if (!format || avdevice_list_input_sources(format, nullptr, nullptr, &list) < 0)
        return configs;
 
    for (int i = 0; i < list->nb_devices; ++i) {
        const AVDeviceInfo& info = *list->devices[i];
        if (!provides_video(info))
            continue;
 
        CameraConfig config;
        config.device_name = info.device_name;
        config.display_name = info.device_description ? info.device_description : "";
#ifdef MAYAFLUX_PLATFORM_WINDOWS
        config.device_name.insert(0, "video=");
#endif
#ifdef MAYAFLUX_PLATFORM_LINUX
        if (!can_capture(config.device_name))
            continue;
#endif
        configs.push_back(std::move(config));
    }
    avdevice_free_list_devices(&list);
 
    std::ranges::sort(configs, {}, &CameraConfig::device_name);
    return configs;
#endif
}

References MayaFlux::IO::CameraConfig::device_name, MayaFlux::IO::CameraConfig::display_name, and format.

Referenced by MayaFlux::choose_camera().

Here is the caller graph for this function: