export declare enum VolumeType {
    VOICE_CALL = "voice_call",
    SYSTEM = "system",
    RING = "ring",
    DEFAULT = "default",
    MUSIC = "music",
    ALARM = "alarm",
    NOTIFICATION = "notification",
    DTMF = "dtmf"
}
export interface VolumeOptions {
    /**
     * The type of volume to control
     * @default VolumeType.MUSIC
     */
    type?: VolumeType;
}
export interface SetVolumeOptions extends VolumeOptions {
    /**
     * Volume level as a float between 0.0 and 1.0
     * @example 0.5
     */
    value: number;
}
export interface VolumeResult {
    /**
     * Current volume level as a float between 0.0 and 1.0
     */
    value: number;
}
export interface WatchVolumeOptions {
    /**
     * Disable system volume handler (iOS only)
     * When true, prevents system volume UI from appearing
     * @default false
     */
    disableSystemVolumeHandler?: boolean;
    /**
     * Suppress volume indicator (Android only)
     * When true, prevents volume UI from appearing
     * @default false
     */
    suppressVolumeIndicator?: boolean;
}
export interface VolumeEvent {
    /**
     * Direction of volume change
     */
    direction: 'up' | 'down';
}
export interface WatchStatusResult {
    /**
     * Whether volume watching is currently active
     */
    value: boolean;
}
export type VolumeChangeCallback = (result: VolumeEvent) => void;
export interface VolumeControlPlugin {
    /**
     * Get current volume level
     * @param options Volume options
     * @returns Promise resolving to current volume level
     * @since 1.0.0
     */
    getVolumeLevel(options?: VolumeOptions): Promise<VolumeResult>;
    /**
     * Set volume level
     * @param options Volume options with value
     * @returns Promise resolving to new volume level
     * @since 1.0.0
     */
    setVolumeLevel(options: SetVolumeOptions): Promise<VolumeResult>;
    /**
     * Start watching volume changes
     * @param options Watch options
     * @param callback Callback function for volume changes
     * @returns Promise resolving to callback ID
     * @since 1.0.0
     */
    watchVolume(options: WatchVolumeOptions, callback: VolumeChangeCallback): Promise<string>;
    /**
     * Clear volume watch
     * @returns Promise resolving when watch is cleared
     * @since 1.0.0
     */
    clearWatch(): Promise<void>;
    /**
     * Check if volume watching is active
     * @returns Promise resolving to watch status
     * @since 1.0.0
     */
    isWatching(): Promise<WatchStatusResult>;
}