// Copyright 2014 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

// This file contains global constant variables used by the application.

// Heart beat message header.
var HEART_BEAT_HEADER = 'HEARTBEAT';

// Default key used to encrypt many media files used in browser tests.
var KEY = new Uint8Array([0xeb, 0xdd, 0x62, 0xf1, 0x68, 0x14, 0xd2, 0x7b,
                          0x68, 0xef, 0x12, 0x2a, 0xfc, 0xe4, 0xae, 0x3c]);

var DEFAULT_LICENSE_SERVER = document.location.origin + '/license_server';

var DEFAULT_MEDIA_FILE = 'http://shadi.kir/alcatraz/Chrome_44-enc_av.webm';

// Key ID used for init data.
var KEY_ID = '0123456789012345';

// Unique strings to identify test result expectations.
var KEY_ERROR = 'KEY_ERROR';
var FILE_IO_TEST_RESULT_HEADER = 'FILEIOTESTRESULT';
var FILE_IO_TEST_SUCCESS = 'FILE_IO_TEST_SUCCESS';
var PREFIXED_API_LOAD_SESSION_HEADER = 'LOAD_SESSION|';
var NOTSUPPORTEDERROR = 'NOTSUPPORTEDERROR';

// Available EME key systems to use.
var PREFIXED_CLEARKEY = 'webkit-org.w3.clearkey';
var CLEARKEY = 'org.w3.clearkey';
var EXTERNAL_CLEARKEY = 'org.chromium.externalclearkey';
var WIDEVINE_KEYSYSTEM = 'com.widevine.alpha';
var FILE_IO_TEST_KEYSYSTEM = 'org.chromium.externalclearkey.fileiotest';
var EME_PREFIXED_VERSION = 'Prefixed EME (v 0.1b)';
var EME_UNPREFIXED_VERSION = 'Unprefixed EME (Working draft)';

// Key system name:value map to show on the document page.
var KEY_SYSTEMS = {
  'Widevine': WIDEVINE_KEYSYSTEM,
  'Clearkey': CLEARKEY,
  'External Clearkey': EXTERNAL_CLEARKEY
};

// General WebM and MP4 name:content_type map to show on the document page.
var MEDIA_TYPES = {
  'WebM - Audio Video': 'video/webm; codecs="vorbis, vp8"',
  'WebM - Video Only': 'video/webm; codecs="vp8"',
  'WebM - Audio Only': 'video/webm; codecs="vorbis"',
  'MP4 - Video Only': 'video/mp4; codecs="avc1.4D4041"',
  'MP4 - Audio Only': 'audio/mp4; codecs="mp4a.40.2"'
};

// Update the EME versions list by checking runtime support by the browser.
var EME_VERSIONS_OPTIONS = {};
EME_VERSIONS_OPTIONS[EME_UNPREFIXED_VERSION] = EME_UNPREFIXED_VERSION;
EME_VERSIONS_OPTIONS[EME_PREFIXED_VERSION] = EME_PREFIXED_VERSION;

var EME_DISABLED_OPTIONS = [];
if (!document.createElement('video').webkitAddKey)
  EME_DISABLED_OPTIONS.push(EME_PREFIXED_VERSION);
if (!document.createElement('video').setMediaKeys)
  EME_DISABLED_OPTIONS.push(EME_UNPREFIXED_VERSION);

// Global document elements ID's.
var VIDEO_ELEMENT_ID = 'video';
var MEDIA_FILE_ELEMENT_ID = 'mediaFile';
var LICENSE_SERVER_ELEMENT_ID = 'licenseServer';
var KEYSYSTEM_ELEMENT_ID = 'keySystemList';
var MEDIA_TYPE_ELEMENT_ID = 'mediaTypeList';
var USE_MSE_ELEMENT_ID = 'useMSE';
var USE_PREFIXED_EME_ID = 'usePrefixedEME';

// These variables get updated every second, so better to have global pointers.
var decodedFPSElement = document.getElementById('decodedFPS');
var droppedFPSElement = document.getElementById('droppedFPS');
var droppedFramesElement = document.getElementById('droppedFrames');
var docLogs = document.getElementById('logs');