import { HardwareMidiPort } from '../midi/hardware-port.js';
import { type DerivedValue } from './decoded-patch-map.js';
export type DeepMindSnapshot = {
    rawSysexBase64: string;
    decodedPayloadBase64: string;
    decodedTrimmedBase64: string;
    derived?: Record<string, DerivedValue>;
    meta: {
        kind: string;
        cmd: string;
        protocol?: number;
        packedBytes: number;
        decodedLength: number;
        decodedTrimmedLength: number;
        trimmedCount: number;
    };
};
export declare function snapshotEditBuffer(opts: {
    port: HardwareMidiPort;
    deviceId: number;
    timeoutMs: number;
}): Promise<DeepMindSnapshot>;
/**
 * Read the current edit buffer, apply byte-level modifications, and write
 * the entire buffer back via sysex. This bypasses NRPN and is useful when
 * certain NRPN addresses don't respond to writes.
 */
export declare function patchEditBuffer(opts: {
    port: HardwareMidiPort;
    deviceId: number;
    timeoutMs: number;
    /** Map of decoded-byte offset → new value to apply before writing back. */
    patches: Map<number, number>;
}): Promise<{
    modifiedCount: number;
    decodedLength: number;
}>;