already_AddRefed<Promise>
AudioContext::Resume(ErrorResult& aRv)
{
nsCOMPtr<nsIGlobalObject> parentObject = do_QueryInterface(GetParentObject());
RefPtr<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 ||
mCloseCalled) {
promise->MaybeReject(NS_ERROR_DOM_INVALID_STATE_ERR);
return promise.forget();
}
if (mAudioContextState == AudioContextState::Running) {
promise->MaybeResolve(JS::UndefinedHandleValue);
return promise.forget();
}
Destination()->Resume();
nsTArray<MediaStream*> streams;
// If mSuspendCalled is false then we already resumed all our streams,
// so don't resume them again (since suspend(); resume(); resume(); should
// be OK). But we still need to do ApplyAudioContextOperation
// to ensure our new promise is resolved.
if (mSuspendCalled) {
streams = GetAllStreams();
}
mPromiseGripArray.AppendElement(promise);
Graph()->ApplyAudioContextOperation(DestinationStream()->AsAudioNodeStream(),
streams,
AudioContextOperation::Resume, promise);
mSuspendCalled = false;
return promise.forget();
}
already_AddRefed<Promise>
AudioContext::Close(ErrorResult& aRv)
{
nsCOMPtr<nsIGlobalObject> parentObject = do_QueryInterface(GetParentObject());
RefPtr<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();
}
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) {
nsTArray<MediaStream*> streams;
// If mSuspendCalled or mCloseCalled are true then we already suspended
// all our streams, so don't suspend them again. But we still need to do
// ApplyAudioContextOperation to ensure our new promise is resolved.
if (!mSuspendCalled && !mCloseCalled) {
streams = GetAllStreams();
}
Graph()->ApplyAudioContextOperation(ds->AsAudioNodeStream(), streams,
AudioContextOperation::Close, promise);
}
mCloseCalled = true;
return promise.forget();
}