C++ (Cpp) MediaStream::BlockStreamIfNeededの例

コード例 #1

ファイル: AudioContext.cpp プロジェクト: AtulKumar2/gecko-dev

already_AddRefed<Promise>
AudioContext::Close(ErrorResult& aRv)
{
  nsCOMPtr<nsIGlobalObject> parentObject = do_QueryInterface(GetParentObject());
  nsRefPtr<Promise> promise;
  promise = Promise::Create(parentObject, aRv);
  if (aRv.Failed()) {
    return nullptr;
  }

  if (mIsOffline) {
    promise->MaybeReject(NS_ERROR_DOM_NOT_SUPPORTED_ERR);
    return promise.forget();
  }

  if (mAudioContextState == AudioContextState::Closed) {
    promise->MaybeResolve(NS_ERROR_DOM_INVALID_STATE_ERR);
    return promise.forget();
  }

  mCloseCalled = true;

  mPromiseGripArray.AppendElement(promise);
  Graph()->ApplyAudioContextOperation(DestinationStream()->AsAudioNodeStream(),
                                      AudioContextOperation::Close, promise);

  MediaStream* ds = DestinationStream();
  if (ds) {
    ds->BlockStreamIfNeeded();
  }

  return promise.forget();
}

コード例 #2

ファイル: AudioContext.cpp プロジェクト: rhelmer/gecko-dev

already_AddRefed<Promise>
AudioContext::Close(ErrorResult& aRv)
{
  nsCOMPtr<nsIGlobalObject> parentObject = do_QueryInterface(GetParentObject());
  nsRefPtr<Promise> promise;
  promise = Promise::Create(parentObject, aRv);
  if (aRv.Failed()) {
    return nullptr;
  }

  if (mIsOffline) {
    promise->MaybeReject(NS_ERROR_DOM_NOT_SUPPORTED_ERR);
    return promise.forget();
  }

  if (mAudioContextState == AudioContextState::Closed) {
    promise->MaybeResolve(NS_ERROR_DOM_INVALID_STATE_ERR);
    return promise.forget();
  }

  mCloseCalled = true;

  if (Destination()) {
    Destination()->DestroyAudioChannelAgent();
  }

  mPromiseGripArray.AppendElement(promise);

  // This can be called when freeing a document, and the streams are dead at
  // this point, so we need extra null-checks.
  MediaStream* ds = DestinationStream();
  if (ds) {
    Graph()->ApplyAudioContextOperation(ds->AsAudioNodeStream(),
                                        AudioContextOperation::Close, promise);

    if (ds) {
      ds->BlockStreamIfNeeded();
    }
  }
  return promise.forget();
}