/**
 * Configuration for the underlying AudioSession.
 *
 * ----
 * Android specific options:
 *
 * * preferredOutputList - The preferred order in which to automatically select an audio output.
 *   This is ignored when an output is manually selected with {@link AudioSession.selectAudioOutput}.
 *
 *   By default, the order is set to:
 *   1. `"bluetooth"
 *   2. `"headset"``
 *   3. `"speaker"`
 *   4. `"earpiece"`
 *
 * * audioTypeOptions - An {@link AndroidAudioTypeOptions} object which provides the
 *   audio options to use on Android.
 *
 *   See {@link AndroidAudioTypePresets} for pre-configured values.
 *
 * ----
 * iOS
 *
 * * defaultOutput - The default preferred output to use when a wired headset or bluetooth output is unavailable.
 *
 *   By default, this is set to `"speaker"`
 */
export type AudioConfiguration = {
    android?: {
        preferredOutputList?: ('speaker' | 'earpiece' | 'headset' | 'bluetooth')[];
        audioTypeOptions: AndroidAudioTypeOptions;
    };
    ios?: {
        defaultOutput?: 'speaker' | 'earpiece';
    };
};
export type AndroidAudioTypeOptions = {
    /**
     * Whether LiveKit should handle managing the audio focus or not.
     *
     * Defaults to true.
     */
    manageAudioFocus?: boolean;
    /**
     * Corresponds to {@link https://developer.android.com/reference/android/media/AudioManager#setMode(int)}
     *
     * Defaults to 'inCommunication'.
     */
    audioMode?: 'normal' | 'callScreening' | 'inCall' | 'inCommunication' | 'ringtone';
    /**
     * Corresponds to the duration hint when requesting audio focus.
     *
     * Defaults to 'gain'.
     *
     * See also {@link https://developer.android.com/reference/android/media/AudioManager#AUDIOFOCUS_GAIN}
     */
    audioFocusMode?: 'gain' | 'gainTransient' | 'gainTransientExclusive' | 'gainTransientMayDuck';
    /**
     * Corresponds to Android's AudioAttributes usage type.
     *
     * Defaults to 'voiceCommunication'.
     *
     * See also {@link https://developer.android.com/reference/android/media/AudioAttributes}
     */
    audioAttributesUsageType?: 'alarm' | 'assistanceAccessibility' | 'assistanceNavigationGuidance' | 'assistanceSonification' | 'assistant' | 'game' | 'media' | 'notification' | 'notificationEvent' | 'notificationRingtone' | 'unknown' | 'voiceCommunication' | 'voiceCommunicationSignalling';
    /**
     * Corresponds to Android's AndroidAttributes content type.
     *
     * Defaults to 'speech'.
     *
     * See also {@link https://developer.android.com/reference/android/media/AudioAttributes}
     */
    audioAttributesContentType?: 'movie' | 'music' | 'sonification' | 'speech' | 'unknown';
    /**
     * Corresponds to the stream type when requesting audio focus. Used on pre-O devices.
     *
     * Defaults to 'voiceCall'
     *
     * See also {@link https://developer.android.com/reference/android/media/AudioManager#STREAM_VOICE_CALL}
     */
    audioStreamType?: 'accessibility' | 'alarm' | 'dtmf' | 'music' | 'notification' | 'ring' | 'system' | 'voiceCall';
    /**
     * On certain Android devices, audio routing does not function properly and
     * bluetooth microphones will not work unless audio mode is set to
     * `inCommunication` or `inCall`. Audio routing is turned off those cases.
     *
     * If this set to true, will attempt to do audio routing regardless of audio mode.
     *
     * Defaults to false.
     */
    forceHandleAudioRouting?: boolean;
};
export declare const AndroidAudioTypePresets: {
    /**
     * A pre-configured AndroidAudioConfiguration for voice communication.
     */
    communication: AndroidAudioTypeOptions;
    /**
     * A pre-configured AndroidAudioConfiguration for media playback.
     */
    media: AndroidAudioTypeOptions;
};
export type AppleAudioMode = 'default' | 'gameChat' | 'measurement' | 'moviePlayback' | 'spokenAudio' | 'videoChat' | 'videoRecording' | 'voiceChat' | 'voicePrompt';
export type AppleAudioCategory = 'soloAmbient' | 'playback' | 'record' | 'playAndRecord' | 'multiRoute';
export type AppleAudioCategoryOption = 'mixWithOthers' | 'duckOthers' | 'interruptSpokenAudioAndMixWithOthers' | 'allowBluetooth' | 'allowBluetoothA2DP' | 'allowAirPlay' | 'defaultToSpeaker';
export type AppleAudioConfiguration = {
    audioCategory?: AppleAudioCategory;
    audioCategoryOptions?: AppleAudioCategoryOption[];
    audioMode?: AppleAudioMode;
};
export type AudioTrackState = 'none' | 'remoteOnly' | 'localOnly' | 'localAndRemote';
export declare function getDefaultAppleAudioConfigurationForMode(mode: AudioTrackState, preferSpeakerOutput?: boolean): AppleAudioConfiguration;
export default class AudioSession {
    /**
     * Applies the provided audio configuration to the underlying AudioSession.
     *
     * Must be called prior to connecting to a Room for the configuration to apply correctly.
     *
     * See also useIOSAudioManagement for automatic configuration of iOS audio options.
     */
    static configureAudio: (config: AudioConfiguration) => Promise<void>;
    /**
     * Starts an AudioSession.
     */
    static startAudioSession: () => Promise<void>;
    /**
     * Stops the existing AudioSession.
     */
    static stopAudioSession: () => Promise<void>;
    /**
     * Set default audio track volume when new tracks are subscribed.
     * Does **not** affect any existing tracks.
     *
     * @param volume A number between 0.0 and 1.0, where 0.0 represents 0% volume and
     * 1.0 represents full volume.
     */
    static setDefaultRemoteAudioTrackVolume: (volume: number) => Promise<void>;
    /**
     * Gets the available audio outputs for use with {@link selectAudioOutput}.
     *
     * {@link startAudioSession} must be called prior to using this method.
     *
     * For Android, will return if available:
     * * "speaker"
     * * "earpiece"
     * * "headset"
     * * "bluetooth"
     *
     * ----
     *
     * For iOS, due to OS limitations, the only available types are:
     * * "default" - Use default iOS audio routing
     * * "force_speaker" - Force audio output through speaker
     *
     * See also {@link showAudioRoutePicker} to display a route picker that
     * can choose between other audio devices (i.e. headset/bluetooth/airplay),
     * or use a library like `react-native-avroutepicker` for a native platform
     * control.
     *
     * @returns the available audio output types
     */
    static getAudioOutputs: () => Promise<string[]>;
    /**
     * Select the provided audio output if available.
     *
     * {@link startAudioSession} must be called prior to using this method.
     *
     * @param deviceId A deviceId retrieved from {@link getAudioOutputs}
     */
    static selectAudioOutput: (deviceId: string) => Promise<void>;
    /**
     * iOS only, requires iOS 11+.
     *
     * Displays an AVRoutePickerView for the user to choose their audio output.
     */
    static showAudioRoutePicker: () => Promise<void>;
    /**
     * Directly change the AVAudioSession category/mode.
     *
     * @param config The configuration to use. Null values will be omitted and the
     * existing values will be unchanged.
     */
    static setAppleAudioConfiguration: (config: AppleAudioConfiguration) => Promise<void>;
}
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