dom/audiochannel/AudioChannelAgent.h
author moz-wptsync-bot <wptsync@mozilla.com>
Wed, 06 Jun 2018 17:50:35 +0000
changeset 1536247 ada68664895bc87c588d998a37aee6af1452d564
parent 1221908 bbedde5d27b4a025e0fd01eeced352511d99367c
child 1277701 798c494473f8e09ca4994e3b5d4b1a69d6af6f69
child 1336492 46ef8bf6c68664b27953e4680747da7a985c30b2
child 1398386 80ed235cff6a319ed3171c949f352a5d6e41726e
child 1689817 7e4ad7ae49da451b667dbee751f707387b6795fa
permissions -rw-r--r--
Bug 1467143 - [wpt-sync] Update web-platform-tests to 75c1b7437dfc0d505520de95df4a96cb16c9afcc, a=testonly wpt-head: 75c1b7437dfc0d505520de95df4a96cb16c9afcc wpt-type: landing

/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=8 sts=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_audio_channel_agent_h__
#define mozilla_dom_audio_channel_agent_h__

#include "nsIAudioChannelAgent.h"
#include "nsCycleCollectionParticipant.h"
#include "nsCOMPtr.h"
#include "nsWeakPtr.h"

#define NS_AUDIOCHANNELAGENT_CONTRACTID "@mozilla.org/audiochannelagent;1"
// f27688e2-3dd7-11e2-904e-10bf48d64bd4
#define NS_AUDIOCHANNELAGENT_CID {0xf27688e2, 0x3dd7, 0x11e2, \
      {0x90, 0x4e, 0x10, 0xbf, 0x48, 0xd6, 0x4b, 0xd4}}

class nsPIDOMWindowInner;
class nsPIDOMWindowOuter;

namespace mozilla {
namespace dom {

class AudioPlaybackConfig;

/* Header file */
class AudioChannelAgent : public nsIAudioChannelAgent
{
public:
  NS_DECL_CYCLE_COLLECTING_ISUPPORTS
  NS_DECL_NSIAUDIOCHANNELAGENT

  NS_DECL_CYCLE_COLLECTION_CLASS(AudioChannelAgent)

  AudioChannelAgent();

  void WindowVolumeChanged();
  void WindowSuspendChanged(nsSuspendedTypes aSuspend);
  void WindowAudioCaptureChanged(uint64_t aInnerWindowID, bool aCapture);

  nsPIDOMWindowOuter* Window() const
  {
    return mWindow;
  }

  uint64_t WindowID() const;
  uint64_t InnerWindowID() const;

  bool IsPlayingStarted() const;
  bool ShouldBlockMedia() const;

private:
  virtual ~AudioChannelAgent();

  AudioPlaybackConfig GetMediaConfig();
  bool IsDisposableSuspend(nsSuspendedTypes aSuspend) const;

  // Returns mCallback if that's non-null, or otherwise tries to get an
  // nsIAudioChannelAgentCallback out of mWeakCallback.
  already_AddRefed<nsIAudioChannelAgentCallback> GetCallback();

  nsresult InitInternal(nsPIDOMWindowInner* aWindow,
                        nsIAudioChannelAgentCallback* aCallback,
                        bool aUseWeakRef);

  void Shutdown();

  nsresult FindCorrectWindow(nsPIDOMWindowInner* aWindow);

  nsCOMPtr<nsPIDOMWindowOuter> mWindow;
  nsCOMPtr<nsIAudioChannelAgentCallback> mCallback;

  nsWeakPtr mWeakCallback;

  uint64_t mInnerWindowID;
  bool mIsRegToService;
};

} // namespace dom
} // namespace mozilla


#endif