Have media content and chrome browser tests load data from media/test/data

content/test/data/media/encrypted_media_utils.js

-// Copyright (c) 2013 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.
-
-var keySystem = QueryString.keysystem;
-var mediaFile = QueryString.mediafile;
-var mediaType = QueryString.mediatype || 'video/webm; codecs="vorbis, vp8"';
-var useMSE = QueryString.usemse == 1;
-
-// 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]);
-// KEY_ID constant used as init data while encrypting test media files.
-var KEY_ID = getInitDataFromKeyId("0123456789012345");
-// Heart beat message header.
-var HEART_BEAT_HEADER = 'HEARTBEAT';
-var EXTERNAL_CLEAR_KEY_KEY_SYSTEM = "org.chromium.externalclearkey";
-// Note that his URL has been normalized from the one in clear_key_cdm.cc.
-var EXTERNAL_CLEAR_KEY_HEARTBEAT_URL =
-    'http://test.externalclearkey.chromium.org/';
-
-function isHeartbeatMessage(msg) {
-  if (msg.length < HEART_BEAT_HEADER.length)
-    return false;
-  for (var i = 0; i < HEART_BEAT_HEADER.length; ++i) {
-    if (String.fromCharCode(msg[i]) != HEART_BEAT_HEADER[i])
-      return false;
-  }
-  return true;
-}
-
-function loadEncryptedMediaFromURL(video) {
-  return loadEncryptedMedia(video, mediaFile, keySystem, KEY, useMSE);
-}
-
-function loadEncryptedMedia(video, mediaFile, keySystem, key, useMSE,
-                            appendSourceCallbackFn) {
-  var keyRequested = false;
-  var sourceOpened = false;
-  // Add properties to enable verification that events occurred.
-  video.receivedKeyAdded = false;
-  video.receivedHeartbeat = false;
-  video.isHeartbeatExpected = keySystem === EXTERNAL_CLEAR_KEY_KEY_SYSTEM;
-  video.receivedKeyMessage = false;
-
-  if (!(video && mediaFile && keySystem && key)) {
-    failTest('Missing parameters in loadEncryptedMedia().');
-    return;
-  }
-
-  function onNeedKey(e) {
-    if (keyRequested)
-      return;
-    keyRequested = true;
-    console.log('onNeedKey', e);
-    try {
-      video.webkitGenerateKeyRequest(keySystem, e.initData);
-    }
-    catch(error) {
-      setResultInTitle(error.name);
-    }
-  }
-
-  function onKeyAdded(e) {
-    e.target.receivedKeyAdded = true;
-  }
-
-  function onKeyMessage(e) {
-    video.receivedKeyMessage = true;
-    if (!e.keySystem || e.keySystem != keySystem) {
-      failTest('keymessage with unexpected keySystem: ' + e.keySystem);
-      return;
-    }
-
-    if (!e.sessionId) {
-      failTest('keymessage without a sessionId: ' + e.sessionId);
-      return;
-    }
-
-    if (!e.message) {
-      failTest('keymessage without a message: ' + e.message);
-      return;
-    }
-
-    if (isHeartbeatMessage(e.message)) {
-      console.log('onKeyMessage - heartbeat', e);
-      e.target.receivedHeartbeat = true;
-      verifyHeartbeatMessage(e);
-      return;
-    }
-
-    // No tested key system returns defaultURL in for key request messages.
-    if (e.defaultURL) {
-      failTest('keymessage unexpectedly has defaultURL: ' + e.defaultURL);
-      return;
-    }
-
-    // keymessage in response to generateKeyRequest. Reply with key.
-    console.log('onKeyMessage - key request', e);
-    var initData = e.message;
-    if (mediaType.indexOf('mp4') != -1)
-      initData = KEY_ID; // Temporary hack for Clear Key in v0.1.
-    video.webkitAddKey(keySystem, key, initData);
-  }
-
-  function verifyHeartbeatMessage(e) {
-    // Only External Clear Key sends a HEARTBEAT message.
-    if (e.keySystem != EXTERNAL_CLEAR_KEY_KEY_SYSTEM) {
-      failTest('Unexpected heartbeat from ' + e.keySystem);
-      return;
-    }
-
-    if (e.defaultURL != EXTERNAL_CLEAR_KEY_HEARTBEAT_URL) {
-      failTest('Heartbeat message with unexpected defaultURL: ' + e.defaultURL);
-      return;
-    }
-  }
-
-  video.addEventListener('webkitneedkey', onNeedKey);
-  video.addEventListener('webkitkeymessage', onKeyMessage);
-  video.addEventListener('webkitkeyerror', function() {
-      setResultInTitle("KeyError");
-  });
-  video.addEventListener('webkitkeyadded', onKeyAdded);
-  installTitleEventHandler(video, 'error');
-
-  if (useMSE) {
-    var mediaSource = loadMediaSource(mediaFile, mediaType,
-                                      appendSourceCallbackFn);
-    video.src = window.URL.createObjectURL(mediaSource);
-  } else {
-    video.src = mediaFile;
-  }
-}
-
-function getInitDataFromKeyId(keyID) {
-  var init_key_id = new Uint8Array(keyID.length);
-  for(var i = 0; i < keyID.length; i++) {
-    init_key_id[i] = keyID.charCodeAt(i);
-  }
-  return init_key_id;
-}