@tvkitchen/countertop/dist/classes/CountertopStream.js

The entry point for developers who want to set up a TV Kitchen.

"use strict";

Object.defineProperty(exports, "__esModule", {
  value: true
});
exports.default = void 0;

var _assert = _interopRequireDefault(require("assert"));

var _uuid = require("uuid");

var _countertop = require("../tools/utils/countertop");

function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }

function _defineProperty(obj, key, value) { if (key in obj) { Object.defineProperty(obj, key, { value: value, enumerable: true, configurable: true, writable: true }); } else { obj[key] = value; } return obj; }

class CountertopStream {
  /**
   * Create a new CountertopStream.
   *
   * CountertopStreams are made up of a distinct stream of stations (e.g. Appliance instances).
   * This allows a given countertop to have multiple sources of video data being processed
   * simultaneously.
   *
   * The tributary map does not need to be complete -- there can be inputs with no associated
   * tributary streams.
   *
   * The tributary map cannot contain irrelevant streams (the output map should match the inputs).
   *
   * @param  {CountertopStation} station     The station at the end of the stream.
   * @param  {Map}               tributaries The streams that are flowing into the final station.
   */
  constructor(_station, tributaries = new Map()) {
    _defineProperty(this, "id", null);

    _defineProperty(this, "tributaries", null);

    _defineProperty(this, "mouth", null);

    _defineProperty(this, "source", null);

    _defineProperty(this, "getSource", () => this.source);

    _defineProperty(this, "getMouth", () => this.mouth);

    _defineProperty(this, "getTributaryMap", () => this.tributaries);

    _defineProperty(this, "getTributaryArray", () => [...this.tributaries.values()]);

    _defineProperty(this, "getLength", () => (0, _countertop.getLongestStreamLength)(this.getTributaryArray()) + 1);

    _defineProperty(this, "includesStation", station => this.mouth === station || this.getTributaryArray().some(tributary => tributary.includesStation(station)));

    _defineProperty(this, "includesStream", stream => this.getTributaryArray().includes(stream) || this.getTributaryArray().some(tributary => tributary.includesStream(stream)));

    _defineProperty(this, "getOutputTypes", () => this.mouth.getOutputTypes());

    Array.from(tributaries.keys()).forEach(outputType => (0, _assert.default)(_station.getInputTypes().includes(outputType), 'The tributaries contained an invalid stream type.'));
    this.id = `CountertopStream::${(0, _uuid.v4)()}`;
    this.mouth = _station;
    this.tributaries = tributaries;

    if (_station.getInputTypes().length === 0) {
      this.source = _station;
    } else {
      var _getSourcesFromStream;

      this.source = (_getSourcesFromStream = (0, _countertop.getSourcesFromStreamMap)(tributaries).pop()) !== null && _getSourcesFromStream !== void 0 ? _getSourcesFromStream : null;
    }
  }
  /**
   * Get the origin / first station in the stream.
   *
   * @return {CountertopStation} The origin station in the stream.
   */


}

var _default = CountertopStream;
exports.default = _default;