import { BridgeOptions } from "../bridge/file-bridge.js";
export interface SilenceInterval {
    start: number;
    end: number;
    duration: number;
}
/**
 * Parse ffmpeg's silencedetect output.
 *
 * silencedetect writes to stderr as `silence_start: 12.5` and
 * `silence_end: 18.25 | silence_duration: 5.75`. A run of silence that reaches
 * the end of the file has a start with no matching end, so it is closed at the
 * media duration.
 */
export declare function parseSilenceDetectOutput(stderr: string, totalDuration: number | null): SilenceInterval[];
/** Pull the media duration out of ffmpeg's `Duration: 00:00:20.00` banner line. */
export declare function parseDurationSeconds(stderr: string): number | null;
/**
 * Invert the silence ranges into the segments worth keeping. This is what an
 * actual "strip the dead air" edit needs, and deriving it here avoids every
 * caller reimplementing the same interval arithmetic.
 */
export declare function invertToSegments(silences: SilenceInterval[], totalDuration: number | null): SilenceInterval[];
export declare function getAudioTools(bridgeOptions: BridgeOptions): {
    adjust_audio_levels: {
        description: string;
        parameters: {
            type: "object";
            properties: {
                node_id: {
                    type: string;
                    description: string;
                };
                level_db: {
                    type: string;
                    description: string;
                };
            };
            required: string[];
        };
        handler: (args: {
            node_id: string;
            level_db: number;
        }) => Promise<import("../bridge/file-bridge.js").CommandResult>;
    };
    add_audio_keyframes: {
        description: string;
        parameters: {
            type: "object";
            properties: {
                node_id: {
                    type: string;
                    description: string;
                };
                keyframes: {
                    type: string;
                    items: {
                        type: string;
                        properties: {
                            time_seconds: {
                                type: string;
                                description: string;
                            };
                            level_db: {
                                type: string;
                                description: string;
                            };
                        };
                        required: string[];
                    };
                    description: string;
                };
            };
            required: string[];
        };
        handler: (args: {
            node_id: string;
            keyframes: Array<{
                time_seconds: number;
                level_db: number;
            }>;
        }) => Promise<import("../bridge/file-bridge.js").CommandResult>;
    };
    mute_track: {
        description: string;
        parameters: {
            type: "object";
            properties: {
                track_index: {
                    type: string;
                    description: string;
                };
                muted: {
                    type: string;
                    description: string;
                };
            };
            required: string[];
        };
        handler: (args: {
            track_index: number;
            muted: boolean;
        }) => Promise<import("../bridge/file-bridge.js").CommandResult>;
    };
    detect_silence: {
        description: string;
        parameters: {
            type: "object";
            properties: {
                media_path: {
                    type: string;
                    description: string;
                };
                project_item_id: {
                    type: string;
                    description: string;
                };
                noise_threshold_db: {
                    type: string;
                    description: string;
                };
                min_duration_seconds: {
                    type: string;
                    description: string;
                };
            };
        };
        handler: (args: {
            media_path?: string;
            project_item_id?: string;
            noise_threshold_db?: number;
            min_duration_seconds?: number;
        }) => Promise<import("../bridge/file-bridge.js").CommandResult>;
    };
};
//# sourceMappingURL=audio.d.ts.map