Function parseFrameRecord

packages/core/src/debug/parsers.ts:158–200

(bytes: Uint8Array)

 *   - _pad0: u32 (bytes 52-55)
 */
export function parseFrameRecord(bytes: Uint8Array): DebugParseResult<FrameRecord> {
  if (bytes.byteLength < DEBUG_FRAME_RECORD_SIZE) {
    return fail(
      "ZR_TRUNCATED",
      0,
      `need ${DEBUG_FRAME_RECORD_SIZE} bytes for frame record but only ${bytes.byteLength} available`,
    );
  }

  const r = new BinaryReader(bytes);

  const frameId = readU64(r);
  const cols = r.readU32();
  const rows = r.readU32();
  const drawlistBytes = r.readU32();
  const drawlistCmds = r.readU32();
  const diffBytesEmitted = r.readU32();
  const dirtyLines = r.readU32();
  const dirtyCells = r.readU32();
  const damageRects = r.readU32();
  const usDrawlist = r.readU32();
  const usDiff = r.readU32();
  const usWrite = r.readU32();
  // Skip _pad0

  return {
    ok: true,
    value: {
      frameId,
      cols,
      rows,
      drawlistBytes,
      drawlistCmds,
      diffBytesEmitted,
      dirtyLines,
      dirtyCells,
      damageRects,
      usDrawlist,
      usDiff,
      usWrite,
    },
  };
}

/**
 * Parse an event record payload.