/**
 * Timestamp computation for CTRK record headers.
 *
 * Implements GetTimeData and GetTimeDataEx algorithms from the native
 * library, including incremental timestamp computation and millis wrapping.
 */
/**
 * Convert 10-byte timestamp structure to Unix epoch milliseconds.
 *
 * Matches the native GetTimeData function behavior. Parses calendar
 * fields from the timestamp bytes and converts to epoch time.
 *
 * @param tsBytes - 10-byte timestamp from record header
 *                  Format: [millis(2LE)][sec][min][hour][wday][day][month][year(2LE)]
 * @returns Unix timestamp in milliseconds (UTC)
 */
export declare function getTimeData(tsBytes: Uint8Array): number;
/**
 * State for incremental timestamp computation.
 */
export interface TimestampState {
    prevTsBytes: Uint8Array | null;
    prevEpochMs: number;
}
/**
 * Create initial timestamp state.
 *
 * @returns Empty timestamp state for first record
 */
export declare function createTimestampState(): TimestampState;
/**
 * Compute timestamp with incremental optimization (GetTimeDataEx algorithm).
 *
 * This function implements the native library's GetTimeDataEx optimization:
 * - For the first record, compute full timestamp
 * - For identical timestamps (all 10 bytes), reuse previous value
 * - For same second (bytes 2-9 identical), update only millis incrementally
 * - For different second, recompute full timestamp
 *
 * @param tsBytes - 10-byte timestamp from current record header
 * @param state - Mutable state object to track previous timestamp
 * @returns Unix timestamp in milliseconds (UTC)
 */
export declare function getTimeDataEx(tsBytes: Uint8Array, state: TimestampState): number;
/**
 * Compare two 10-byte timestamp arrays for equality.
 *
 * @param a - First timestamp
 * @param b - Second timestamp
 * @returns True if all 10 bytes are identical
 */
export declare function timestampsEqual(a: Uint8Array, b: Uint8Array): boolean;
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