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/* 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/. */
#ifndef mozilla_dom_system_AudioChannelManager_h
#define mozilla_dom_system_AudioChannelManager_h
#include "mozilla/dom/BrowserElementAudioChannel.h"
#include "mozilla/DOMEventTargetHelper.h"
#include "mozilla/Hal.h"
#include "mozilla/HalTypes.h"
#include "mozilla/Maybe.h"
#include "AudioChannelService.h"
namespace mozilla {
namespace hal {
class SwitchEvent;
typedef Observer<SwitchEvent> SwitchObserver;
} // namespace hal
namespace dom {
namespace system {
class AudioChannelManager final
: public DOMEventTargetHelper
, public hal::SwitchObserver
, public nsIDOMEventListener
{
public:
AudioChannelManager();
NS_DECL_ISUPPORTS_INHERITED
NS_DECL_NSIDOMEVENTLISTENER
void Notify(const hal::SwitchEvent& aEvent);
void Init(nsPIDOMWindowInner* aWindow);
/**
* WebIDL Interface
*/
nsPIDOMWindowInner* GetParentObject() const
{
return GetOwner();
}
virtual JSObject* WrapObject(JSContext* aCx, JS::Handle<JSObject*> aGivenProto) override;
bool Headphones()
{
// Bug 929139 - Remove the assert check for SWITCH_STATE_UNKNOWN.
// If any devices (ex: emulator) didn't have the corresponding sys node for
// headset switch state then GonkSwitch will report the unknown state.
// So it is possible to get unknown state here.
if (mState.isNothing()) {
mState = Some(hal::GetCurrentSwitchState(hal::SWITCH_HEADPHONES));
}
return mState.value() != hal::SWITCH_STATE_OFF &&
mState.value() != hal::SWITCH_STATE_UNKNOWN;
}
bool SetVolumeControlChannel(const nsAString& aChannel);
bool GetVolumeControlChannel(nsAString& aChannel);
IMPL_EVENT_HANDLER(headphoneschange)
void GetAllowedAudioChannels(
nsTArray<RefPtr<mozilla::dom::BrowserElementAudioChannel>>& aAudioChannels,
mozilla::ErrorResult& aRv);
protected:
virtual ~AudioChannelManager();
private:
void NotifyVolumeControlChannelChanged();
Maybe<hal::SwitchState> mState;
int32_t mVolumeChannel;
};
} // namespace system
} // namespace dom
} // namespace mozilla
#endif // mozilla_dom_system_AudioChannelManager_h
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