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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim:set ts=2 sw=2 sts=2 et cindent: */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#include "MediaElementAudioSourceNode.h"
#include "mozilla/dom/MediaElementAudioSourceNodeBinding.h"
#include "AudioDestinationNode.h"
#include "nsIScriptError.h"
#include "AudioNodeStream.h"
namespace mozilla {
namespace dom {
MediaElementAudioSourceNode::MediaElementAudioSourceNode(AudioContext* aContext)
: MediaStreamAudioSourceNode(aContext) {}
/* static */
already_AddRefed<MediaElementAudioSourceNode>
MediaElementAudioSourceNode::Create(
AudioContext& aAudioContext, const MediaElementAudioSourceOptions& aOptions,
ErrorResult& aRv) {
if (aAudioContext.IsOffline()) {
aRv.Throw(NS_ERROR_DOM_NOT_SUPPORTED_ERR);
return nullptr;
}
RefPtr<MediaElementAudioSourceNode> node =
new MediaElementAudioSourceNode(&aAudioContext);
RefPtr<DOMMediaStream> stream = aOptions.mMediaElement->CaptureAudio(
aRv, aAudioContext.Destination()->Stream()->Graph());
if (aRv.Failed()) {
return nullptr;
}
node->Init(stream, aRv);
if (aRv.Failed()) {
return nullptr;
}
node->ListenForAllowedToPlay(aOptions);
return node.forget();
}
JSObject* MediaElementAudioSourceNode::WrapObject(
JSContext* aCx, JS::Handle<JSObject*> aGivenProto) {
return MediaElementAudioSourceNode_Binding::Wrap(aCx, this, aGivenProto);
}
void MediaElementAudioSourceNode::ListenForAllowedToPlay(
const MediaElementAudioSourceOptions& aOptions) {
aOptions.mMediaElement->GetAllowedToPlayPromise()
->Then(
GetAbstractMainThread(), __func__,
// Capture by reference to bypass the mozilla-refcounted-inside-lambda
// static analysis. We capture a non-owning reference so as to allow
// cycle collection of the node. The reference is cleared via
// DisconnectIfExists() from Destroy() when the node is collected.
[& self = *this]() {
self.Context()->StartBlockedAudioContextIfAllowed();
self.mAllowedToPlayRequest.Complete();
})
->Track(mAllowedToPlayRequest);
}
void MediaElementAudioSourceNode::Destroy() {
mAllowedToPlayRequest.DisconnectIfExists();
MediaStreamAudioSourceNode::Destroy();
}
} // namespace dom
} // namespace mozilla
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