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https://github.com/classilla/tenfourfox.git
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88 lines
2.2 KiB
C++
88 lines
2.2 KiB
C++
/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this file,
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* You can obtain one at http://mozilla.org/MPL/2.0/. */
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#ifndef mozilla_dom_system_AudioChannelManager_h
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#define mozilla_dom_system_AudioChannelManager_h
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#include "mozilla/dom/BrowserElementAudioChannel.h"
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#include "mozilla/DOMEventTargetHelper.h"
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#include "mozilla/Hal.h"
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#include "mozilla/HalTypes.h"
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#include "mozilla/Maybe.h"
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#include "AudioChannelService.h"
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namespace mozilla {
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namespace hal {
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class SwitchEvent;
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typedef Observer<SwitchEvent> SwitchObserver;
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} // namespace hal
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namespace dom {
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namespace system {
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class AudioChannelManager final
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: public DOMEventTargetHelper
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, public hal::SwitchObserver
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, public nsIDOMEventListener
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{
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public:
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AudioChannelManager();
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NS_DECL_ISUPPORTS_INHERITED
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NS_DECL_NSIDOMEVENTLISTENER
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void Notify(const hal::SwitchEvent& aEvent);
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void Init(nsPIDOMWindow* aWindow);
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/**
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* WebIDL Interface
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*/
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nsPIDOMWindow* GetParentObject() const
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{
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return GetOwner();
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}
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virtual JSObject* WrapObject(JSContext* aCx, JS::Handle<JSObject*> aGivenProto) override;
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bool Headphones()
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{
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// Bug 929139 - Remove the assert check for SWITCH_STATE_UNKNOWN.
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// If any devices (ex: emulator) didn't have the corresponding sys node for
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// headset switch state then GonkSwitch will report the unknown state.
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// So it is possible to get unknown state here.
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if (mState.isNothing()) {
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mState = Some(hal::GetCurrentSwitchState(hal::SWITCH_HEADPHONES));
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}
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return mState.value() != hal::SWITCH_STATE_OFF &&
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mState.value() != hal::SWITCH_STATE_UNKNOWN;
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}
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bool SetVolumeControlChannel(const nsAString& aChannel);
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bool GetVolumeControlChannel(nsAString& aChannel);
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IMPL_EVENT_HANDLER(headphoneschange)
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void GetAllowedAudioChannels(
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nsTArray<RefPtr<mozilla::dom::BrowserElementAudioChannel>>& aAudioChannels,
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mozilla::ErrorResult& aRv);
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protected:
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virtual ~AudioChannelManager();
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private:
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void NotifyVolumeControlChannelChanged();
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Maybe<hal::SwitchState> mState;
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int32_t mVolumeChannel;
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};
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} // namespace system
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} // namespace dom
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} // namespace mozilla
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#endif // mozilla_dom_system_AudioChannelManager_h
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