rx-player/src/experimental/tools/mediaCapabilitiesProber/probers/mediaContentType.ts

Canal+ HTML5 Video Player

/**
 * Copyright 2015 CANAL+ Group
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

import { MediaSource_ } from "../../../../compat/browser_compatibility_types";
import isNullOrUndefined from "../../../../utils/is_null_or_undefined";
import type { IMediaConfiguration } from "../types";
import { ProberStatus } from "../types";

/**
 * @param {Object} config
 * @returns {Promise}
 */
export default function probeContentType(
  config: IMediaConfiguration,
): Promise<[ProberStatus]> {
  return new Promise((resolve) => {
    if (isNullOrUndefined(MediaSource_)) {
      throw new Error(
        "MediaCapabilitiesProber >>> API_CALL: " + "MediaSource API not available",
      );
    }
    if (typeof MediaSource_.isTypeSupported !== "function") {
      throw new Error(
        "MediaCapabilitiesProber >>> API_CALL: " + "isTypeSupported not available",
      );
    }
    const contentTypes: string[] = [];
    if (
      config.video !== undefined &&
      config.video.contentType !== undefined &&
      config.video.contentType.length > 0
    ) {
      contentTypes.push(config.video.contentType);
    }
    if (
      config.audio !== undefined &&
      config.audio.contentType !== undefined &&
      config.audio.contentType.length > 0
    ) {
      contentTypes.push(config.audio.contentType);
    }
    if (contentTypes.length === 0) {
      throw new Error(
        "MediaCapabilitiesProber >>> API_CALL: " +
          "Not enough arguments for calling isTypeSupported.",
      );
    }
    for (let i = 0; i < contentTypes.length; i++) {
      if (!MediaSource_.isTypeSupported(contentTypes[i])) {
        resolve([ProberStatus.NotSupported]);
        return;
      }
    }
    resolve([ProberStatus.Supported]);
  });
}