The Tor Browser: dom/audiochannel/AudioChannelServiceChild.h@6474c204b198

Cloned upstream origin tor-browser at tor-browser-31.3.0esr-4.5-1-build1
revision ID fc1c9ff7c1b2defdbc039f12214767608f46423f for hacking purpose.

     1 /* -*- Mode: c++; c-basic-offset: 2; indent-tabs-mode: nil; tab-width: 40 -*- */

     2 /* vim: set ts=2 et sw=2 tw=80: */

     3 /* This Source Code Form is subject to the terms of the Mozilla Public

     4  * License, v. 2.0. If a copy of the MPL was not distributed with this file,

     5  * You can obtain one at http://mozilla.org/MPL/2.0/. */

     7 #ifndef mozilla_dom_audiochannelservicechild_h__

     8 #define mozilla_dom_audiochannelservicechild_h__

    10 #include "nsAutoPtr.h"

    11 #include "nsISupports.h"

    13 #include "AudioChannelService.h"

    14 #include "AudioChannelCommon.h"

    16 namespace mozilla {

    17 namespace dom {

    19 class AudioChannelServiceChild : public AudioChannelService

    20 {

    21 public:

    23   /**

    24    * Returns the AudioChannelServce singleton. Only to be called from main

    25    * thread.

    26    *

    27    * @return NS_OK on proper assignment, NS_ERROR_FAILURE otherwise.

    28    */

    29   static AudioChannelService* GetAudioChannelService();

    31   static void Shutdown();

    33   virtual void RegisterAudioChannelAgent(AudioChannelAgent* aAgent,

    34                                          AudioChannel aChannel,

    35                                          bool aWithVideo);

    36   virtual void UnregisterAudioChannelAgent(AudioChannelAgent* aAgent);

    38   /**

    39    * Return the state to indicate this agent should keep playing/

    40    * fading volume/muted.

    41    */

    42   virtual AudioChannelState GetState(AudioChannelAgent* aAgent,

    43                                      bool aElementHidden);

    45   virtual void SetDefaultVolumeControlChannel(int32_t aChannel,

    46                                               bool aHidden);

    48 protected:

    49   AudioChannelServiceChild();

    50   virtual ~AudioChannelServiceChild();

    51 };

    53 } // namespace dom

    54 } // namespace mozilla

    56 #endif

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