зеркало из https://github.com/mozilla/gecko-dev.git
295 строки
9.6 KiB
C++
295 строки
9.6 KiB
C++
/* -*- Mode: c++; c-basic-offset: 2; indent-tabs-mode: nil; tab-width: 40 -*- */
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/* vim: set ts=2 et sw=2 tw=80: */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this file,
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* You can obtain one at http://mozilla.org/MPL/2.0/. */
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#ifndef mozilla_dom_audiochannelservice_h__
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#define mozilla_dom_audiochannelservice_h__
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#include "nsAutoPtr.h"
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#include "nsIObserver.h"
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#include "nsTArray.h"
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#include "nsITimer.h"
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#include "AudioChannelCommon.h"
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#include "AudioChannelAgent.h"
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#include "nsAttrValue.h"
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#include "nsClassHashtable.h"
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#include "mozilla/dom/AudioChannelBinding.h"
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class nsIRunnable;
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class nsPIDOMWindow;
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namespace mozilla {
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namespace dom {
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#ifdef MOZ_WIDGET_GONK
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class SpeakerManagerService;
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#endif
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class AudioChannelService
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: public nsIObserver
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, public nsITimerCallback
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{
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public:
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NS_DECL_ISUPPORTS
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NS_DECL_NSIOBSERVER
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NS_DECL_NSITIMERCALLBACK
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/**
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* Returns the AudioChannelServce singleton or null if the process havn't create it before.
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* Only to be called from main thread.
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*/
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static AudioChannelService* GetAudioChannelService();
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/**
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* Returns the AudioChannelServce singleton.
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* If AudioChannelServce is not exist, create and return new one.
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* Only to be called from main thread.
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*/
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static AudioChannelService* GetOrCreateAudioChannelService();
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/**
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* Shutdown the singleton.
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*/
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static void Shutdown();
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/**
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* Any audio channel agent that starts playing should register itself to
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* this service, sharing the AudioChannel.
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*/
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virtual void RegisterAudioChannelAgent(AudioChannelAgent* aAgent,
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AudioChannel aChannel,
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bool aWithVideo);
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/**
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* Any audio channel agent that stops playing should unregister itself to
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* this service.
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*/
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virtual void UnregisterAudioChannelAgent(AudioChannelAgent* aAgent);
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/**
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* Return the state to indicate this agent should keep playing/
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* fading volume/muted.
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*/
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virtual AudioChannelState GetState(AudioChannelAgent* aAgent,
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bool aElementHidden);
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/**
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* Return true if there is a content channel active in this process
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* or one of its subprocesses.
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*/
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virtual bool ContentOrNormalChannelIsActive();
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/**
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* Return true if there is a telephony channel active in this process
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* or one of its subprocesses.
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*/
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virtual bool TelephonyChannelIsActive();
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/**
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* Return true if a normal or content channel is active for the given
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* process ID.
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*/
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virtual bool ProcessContentOrNormalChannelIsActive(uint64_t aChildID);
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/***
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* AudioChannelManager calls this function to notify the default channel used
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* to adjust volume when there is no any active channel. if aChannel is -1,
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* the default audio channel will be used. Otherwise aChannel is casted to
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* AudioChannel enum.
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*/
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virtual void SetDefaultVolumeControlChannel(int32_t aChannel,
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bool aVisible);
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bool AnyAudioChannelIsActive();
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void RefreshAgentsVolume(nsPIDOMWindow* aWindow);
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#ifdef MOZ_WIDGET_GONK
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void RegisterSpeakerManager(SpeakerManagerService* aSpeakerManager)
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{
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if (!mSpeakerManager.Contains(aSpeakerManager)) {
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mSpeakerManager.AppendElement(aSpeakerManager);
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}
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}
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void UnregisterSpeakerManager(SpeakerManagerService* aSpeakerManager)
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{
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mSpeakerManager.RemoveElement(aSpeakerManager);
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}
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#endif
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static const nsAttrValue::EnumTable* GetAudioChannelTable();
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static AudioChannel GetAudioChannel(const nsAString& aString);
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static AudioChannel GetDefaultAudioChannel();
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static void GetAudioChannelString(AudioChannel aChannel, nsAString& aString);
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static void GetDefaultAudioChannelString(nsAString& aString);
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void Notify();
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protected:
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void SendNotification();
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/**
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* Send the audio-channel-changed notification for the given process ID if
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* needed.
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*/
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void SendAudioChannelChangedNotification(uint64_t aChildID);
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/* Register/Unregister IPC types: */
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void RegisterType(AudioChannel aChannel, uint64_t aChildID, bool aWithVideo);
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void UnregisterType(AudioChannel aChannel, bool aElementHidden,
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uint64_t aChildID, bool aWithVideo);
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void UnregisterTypeInternal(AudioChannel aChannel, bool aElementHidden,
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uint64_t aChildID, bool aWithVideo);
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AudioChannelState GetStateInternal(AudioChannel aChannel, uint64_t aChildID,
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bool aElementHidden,
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bool aElementWasHidden);
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/* Update the internal type value following the visibility changes */
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void UpdateChannelType(AudioChannel aChannel, uint64_t aChildID,
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bool aElementHidden, bool aElementWasHidden);
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/* Send the default-volume-channel-changed notification */
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void SetDefaultVolumeControlChannelInternal(int32_t aChannel,
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bool aVisible, uint64_t aChildID);
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AudioChannelState CheckTelephonyPolicy(AudioChannel aChannel,
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uint64_t aChildID);
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void RegisterTelephonyChild(uint64_t aChildID);
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void UnregisterTelephonyChild(uint64_t aChildID);
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AudioChannelService();
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virtual ~AudioChannelService();
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enum AudioChannelInternalType {
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AUDIO_CHANNEL_INT_NORMAL = 0,
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AUDIO_CHANNEL_INT_NORMAL_HIDDEN,
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AUDIO_CHANNEL_INT_CONTENT,
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AUDIO_CHANNEL_INT_CONTENT_HIDDEN,
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AUDIO_CHANNEL_INT_NOTIFICATION,
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AUDIO_CHANNEL_INT_NOTIFICATION_HIDDEN,
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AUDIO_CHANNEL_INT_ALARM,
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AUDIO_CHANNEL_INT_ALARM_HIDDEN,
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AUDIO_CHANNEL_INT_TELEPHONY,
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AUDIO_CHANNEL_INT_TELEPHONY_HIDDEN,
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AUDIO_CHANNEL_INT_RINGER,
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AUDIO_CHANNEL_INT_RINGER_HIDDEN,
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AUDIO_CHANNEL_INT_PUBLICNOTIFICATION,
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AUDIO_CHANNEL_INT_PUBLICNOTIFICATION_HIDDEN,
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AUDIO_CHANNEL_INT_LAST
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};
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bool ChannelsActiveWithHigherPriorityThan(AudioChannelInternalType aType);
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bool CheckVolumeFadedCondition(AudioChannelInternalType aType,
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bool aElementHidden);
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AudioChannelInternalType GetInternalType(AudioChannel aChannel,
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bool aElementHidden);
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class AudioChannelAgentData {
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public:
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AudioChannelAgentData(AudioChannel aChannel,
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bool aElementHidden,
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AudioChannelState aState,
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bool aWithVideo)
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: mChannel(aChannel)
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, mElementHidden(aElementHidden)
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, mState(aState)
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, mWithVideo(aWithVideo)
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{}
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AudioChannel mChannel;
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bool mElementHidden;
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AudioChannelState mState;
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const bool mWithVideo;
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};
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static PLDHashOperator
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NotifyEnumerator(AudioChannelAgent* aAgent,
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AudioChannelAgentData* aData, void *aUnused);
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static PLDHashOperator
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RefreshAgentsVolumeEnumerator(AudioChannelAgent* aAgent,
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AudioChannelAgentData* aUnused,
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void *aPtr);
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static PLDHashOperator
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CountWindowEnumerator(AudioChannelAgent* aAgent,
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AudioChannelAgentData* aUnused,
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void *aPtr);
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static PLDHashOperator
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WindowDestroyedEnumerator(AudioChannelAgent* aAgent,
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nsAutoPtr<AudioChannelAgentData>& aData,
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void *aPtr);
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// This returns the number of agents from this aWindow.
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uint32_t CountWindow(nsIDOMWindow* aWindow);
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nsClassHashtable< nsPtrHashKey<AudioChannelAgent>, AudioChannelAgentData > mAgents;
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#ifdef MOZ_WIDGET_GONK
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nsTArray<SpeakerManagerService*> mSpeakerManager;
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#endif
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nsTArray<uint64_t> mChannelCounters[AUDIO_CHANNEL_INT_LAST];
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int32_t mCurrentHigherChannel;
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int32_t mCurrentVisibleHigherChannel;
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nsTArray<uint64_t> mWithVideoChildIDs;
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// Telephony Channel policy is "LIFO", the last app to require the resource is
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// allowed to play. The others are muted.
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struct TelephonyChild {
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uint64_t mChildID;
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uint32_t mInstances;
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explicit TelephonyChild(uint64_t aChildID)
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: mChildID(aChildID)
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, mInstances(1)
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{}
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};
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nsTArray<TelephonyChild> mTelephonyChildren;
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// mPlayableHiddenContentChildID stores the ChildID of the process which can
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// play content channel(s) in the background.
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// A background process contained content channel(s) will become playable:
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// 1. When this background process registers its content channel(s) in
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// AudioChannelService and there is no foreground process with registered
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// content channel(s).
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// 2. When this process goes from foreground into background and there is
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// no foreground process with registered content channel(s).
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// A background process contained content channel(s) will become non-playable:
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// 1. When there is a foreground process registering its content channel(s)
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// in AudioChannelService.
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// ps. Currently this condition is never satisfied because the default value
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// of visibility status of each channel during registering is hidden = true.
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// 2. When there is a process with registered content channel(s) goes from
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// background into foreground.
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// 3. When this process unregisters all hidden content channels.
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// 4. When this process shuts down.
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uint64_t mPlayableHiddenContentChildID;
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bool mDisabled;
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nsCOMPtr<nsIRunnable> mRunnable;
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nsCOMPtr<nsITimer> mDeferTelChannelTimer;
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bool mTimerElementHidden;
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uint64_t mTimerChildID;
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uint64_t mDefChannelChildID;
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// This is needed for IPC comunication between
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// AudioChannelServiceChild and this class.
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friend class ContentParent;
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friend class ContentChild;
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};
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} // namespace dom
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} // namespace mozilla
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#endif
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