gecko/dom/audiochannel/AudioChannelServiceChild.h
Marco Chen 011de3c012 Bug 815069 - Part 3: Adapt audio channel agent to nsHTMLMediaElement and AudioChannelService. r=roc, a=blocking-basecamp
[Audio] A mechanism for Gecko components without media element to join audio competing policy
2012-12-06 23:25:18 +08:00

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1.3 KiB
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/* -*- Mode: c++; c-basic-offset: 2; indent-tabs-mode: nil; tab-width: 40 -*- */
/* vim: set ts=2 et sw=2 tw=80: */
/* 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_audiochannelservicechild_h__
#define mozilla_dom_audiochannelservicechild_h__
#include "nsAutoPtr.h"
#include "nsISupports.h"
#include "AudioChannelService.h"
#include "AudioChannelCommon.h"
namespace mozilla {
namespace dom {
class AudioChannelServiceChild : public AudioChannelService
{
public:
/**
* Returns the AudioChannelServce singleton. Only to be called from main thread.
* @return NS_OK on proper assignment, NS_ERROR_FAILURE otherwise.
*/
static AudioChannelService*
GetAudioChannelService();
static void Shutdown();
virtual void RegisterAudioChannelAgent(AudioChannelAgent* aAgent,
AudioChannelType aType);
virtual void UnregisterAudioChannelAgent(AudioChannelAgent* aAgent);
/**
* Return true if this type + this mozHidden should be muted.
*/
virtual bool GetMuted(AudioChannelType aType, bool aMozHidden);
protected:
AudioChannelServiceChild();
virtual ~AudioChannelServiceChild();
};
} // namespace dom
} // namespace mozilla
#endif