/**
 * Core type definitions for @minagishl/react-piano-roll
 */
/**
 * MIDI note number (0-127)
 * A0 = 21, C4 (middle C) = 60, C8 = 108
 */
export type MIDINoteNumber = number;
/**
 * Note velocity (0-127)
 * Represents the intensity/volume of a note
 */
export type Velocity = number;
/**
 * Time in seconds
 */
export type Time = number;
/**
 * Represents a single note in the piano roll
 */
export interface Note {
    /**
     * MIDI note number (0-127)
     */
    pitch: MIDINoteNumber;
    /**
     * Start time in seconds
     */
    startTime: Time;
    /**
     * Duration in seconds
     */
    duration: number;
    /**
     * Note velocity (0-127), defaults to 64 if not specified
     */
    velocity?: Velocity;
}
/**
 * Playback state
 */
export type PlaybackState = 'playing' | 'paused' | 'stopped';
/**
 * Theme configuration for customizing the piano roll appearance
 */
export interface PianoRollTheme {
    /**
     * Background color of the piano roll
     */
    backgroundColor?: string;
    /**
     * Grid line color
     */
    gridColor?: string;
    /**
     * Whether to show grid lines
     */
    showGrid?: boolean;
    /**
     * Grid spacing in pixels
     */
    gridSpacing?: number;
    /**
     * Note block color (can be a function for velocity-based coloring)
     */
    noteColor?: string | ((velocity: number) => string);
    /**
     * Active/playing note color
     */
    activeNoteColor?: string;
    /**
     * Note border radius in pixels
     */
    noteRadius?: number;
    /**
     * White key color
     */
    whiteKeyColor?: string;
    /**
     * Black key color
     */
    blackKeyColor?: string;
    /**
     * Active white key color
     */
    activeWhiteKeyColor?: string;
    /**
     * Active black key color
     */
    activeBlackKeyColor?: string;
    /**
     * Key border color
     */
    keyBorderColor?: string;
}
/**
 * Keyboard configuration
 */
export interface KeyboardConfig {
    /**
     * Number of keys to display
     */
    keyCount?: number;
    /**
     * Starting MIDI note number (e.g., 21 for A0)
     */
    startNote?: MIDINoteNumber;
    /**
     * Width of white keys in pixels
     */
    whiteKeyWidth?: number;
    /**
     * Height of white keys in pixels
     */
    whiteKeyHeight?: number;
    /**
     * Width of black keys in pixels (relative to white keys)
     */
    blackKeyWidth?: number;
    /**
     * Height of black keys in pixels (relative to white keys)
     */
    blackKeyHeight?: number;
    /**
     * Whether to show note labels on keys
     */
    showLabels?: boolean;
    /**
     * Font size for key labels in pixels
     */
    labelFontSize?: number;
    /**
     * Font family for key labels
     */
    labelFontFamily?: string;
    /**
     * Label color for white keys
     */
    whiteLabelColor?: string;
    /**
     * Label color for black keys
     */
    blackLabelColor?: string;
    /**
     * Border radius for bottom corners of keys in pixels
     */
    keyBorderRadius?: number;
}
/**
 * Animation configuration
 */
export interface AnimationConfig {
    /**
     * Pixels per second for falling notes
     */
    fallSpeed?: number;
    /**
     * Easing function for animations
     */
    easing?: 'linear' | 'ease-in' | 'ease-out' | 'ease-in-out';
    /**
     * Lookahead time in seconds (how far ahead to show notes)
     */
    lookahead?: number;
}
/**
 * Playback controller interface
 */
export interface PlaybackController {
    /**
     * Start playback
     */
    play: () => void;
    /**
     * Pause playback
     */
    pause: () => void;
    /**
     * Stop playback and reset to beginning
     */
    stop: () => void;
    /**
     * Seek to a specific time
     */
    seek: (time: Time) => void;
    /**
     * Get current playback time
     */
    getCurrentTime: () => Time;
    /**
     * Get current playback state
     */
    getState: () => PlaybackState;
}
/**
 * Audio engine interface for playing notes
 */
export interface AudioEngine {
    /**
     * Play a note
     */
    playNote: (pitch: MIDINoteNumber, velocity: Velocity, duration: number) => void;
    /**
     * Stop a note
     */
    stopNote: (pitch: MIDINoteNumber) => void;
    /**
     * Stop all notes
     */
    stopAll: () => void;
    /**
     * Set master volume (0-1)
     */
    setVolume: (volume: number) => void;
    /**
     * Initialize/load audio resources
     */
    init: () => Promise<void>;
    /**
     * Clean up resources
     */
    dispose: () => void;
}
//# sourceMappingURL=index.d.ts.map