зеркало из https://github.com/mozilla/gecko-dev.git
88 строки
2.3 KiB
C++
88 строки
2.3 KiB
C++
/* 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
|