зеркало из https://github.com/mozilla/gecko-dev.git
301 строка
10 KiB
C++
301 строка
10 KiB
C++
/* 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_MEDIAMANAGER_H
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#define MOZILLA_MEDIAMANAGER_H
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#include "MediaEngine.h"
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#include "MediaEnginePrefs.h"
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#include "mozilla/media/DeviceChangeCallback.h"
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#include "mozilla/dom/GetUserMediaRequest.h"
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#include "mozilla/Services.h"
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#include "mozilla/Unused.h"
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#include "nsAutoPtr.h"
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#include "nsIMediaManager.h"
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#include "nsHashKeys.h"
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#include "nsClassHashtable.h"
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#include "nsRefPtrHashtable.h"
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#include "nsIObserver.h"
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#include "nsIPrefService.h"
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#include "nsIPrefBranch.h"
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#include "nsIDOMNavigatorUserMedia.h"
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#include "nsXULAppAPI.h"
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#include "mozilla/Attributes.h"
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#include "mozilla/Preferences.h"
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#include "mozilla/StaticPtr.h"
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#include "mozilla/dom/MediaStreamBinding.h"
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#include "mozilla/dom/MediaStreamTrackBinding.h"
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#include "mozilla/dom/MediaStreamError.h"
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#include "mozilla/media/MediaChild.h"
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#include "mozilla/media/MediaParent.h"
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#include "mozilla/Logging.h"
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#include "mozilla/UniquePtr.h"
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#include "DOMMediaStream.h"
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#ifdef MOZ_WEBRTC
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#include "mtransport/runnable_utils.h"
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#endif
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// Note, these suck in Windows headers, unfortunately.
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#include "base/thread.h"
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#include "base/task.h"
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namespace mozilla {
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namespace dom {
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struct MediaStreamConstraints;
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struct MediaTrackConstraints;
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struct MediaTrackConstraintSet;
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enum class CallerType : uint32_t;
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} // namespace dom
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namespace ipc {
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class PrincipalInfo;
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}
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class AllocationHandle;
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class GetUserMediaTask;
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class GetUserMediaWindowListener;
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class MediaManager;
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class SourceListener;
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LogModule* GetMediaManagerLog();
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class MediaDevice : public nsIMediaDevice
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{
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public:
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NS_DECL_THREADSAFE_ISUPPORTS
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NS_DECL_NSIMEDIADEVICE
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explicit MediaDevice(MediaEngineSource* aSource,
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const nsString& aName,
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const nsString& aID,
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const nsString& aRawID = NS_LITERAL_STRING(""));
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uint32_t GetBestFitnessDistance(
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const nsTArray<const NormalizedConstraintSet*>& aConstraintSets,
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bool aIsChrome);
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nsresult Allocate(const dom::MediaTrackConstraints& aConstraints,
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const MediaEnginePrefs& aPrefs,
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const mozilla::ipc::PrincipalInfo& aPrincipalInfo,
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const char** aOutBadConstraint);
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nsresult SetTrack(const RefPtr<SourceMediaStream>& aStream,
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TrackID aTrackID,
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const PrincipalHandle& aPrincipal);
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nsresult Start();
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nsresult Reconfigure(const dom::MediaTrackConstraints& aConstraints,
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const MediaEnginePrefs& aPrefs,
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const char** aOutBadConstraint);
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nsresult Stop();
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nsresult Deallocate();
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void Pull(const RefPtr<SourceMediaStream>& aStream,
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TrackID aTrackID,
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StreamTime aDesiredTime,
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const PrincipalHandle& aPrincipal);
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void GetSettings(dom::MediaTrackSettings& aOutSettings) const;
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dom::MediaSourceEnum GetMediaSource() const;
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protected:
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virtual ~MediaDevice() = default;
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static uint32_t FitnessDistance(nsString aN,
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const dom::OwningStringOrStringSequenceOrConstrainDOMStringParameters& aConstraint);
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private:
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static bool StringsContain(const dom::OwningStringOrStringSequence& aStrings,
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nsString aN);
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static uint32_t FitnessDistance(nsString aN,
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const dom::ConstrainDOMStringParameters& aParams);
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// Assigned on allocation on media thread, then read on the media thread and
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// graph thread
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RefPtr<AllocationHandle> mAllocationHandle;
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public:
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const RefPtr<MediaEngineSource> mSource;
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const bool mIsVideo;
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const bool mScary;
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const nsString mType;
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const nsString mName;
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const nsString mID;
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const nsString mRawID;
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};
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typedef nsRefPtrHashtable<nsUint64HashKey, GetUserMediaWindowListener> WindowTable;
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class MediaManager final : public nsIMediaManagerService,
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public nsIObserver
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,public DeviceChangeCallback
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{
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friend SourceListener;
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public:
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static already_AddRefed<MediaManager> GetInstance();
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// NOTE: never Dispatch(....,NS_DISPATCH_SYNC) to the MediaManager
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// thread from the MainThread, as we NS_DISPATCH_SYNC to MainThread
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// from MediaManager thread.
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static MediaManager* Get();
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static MediaManager* GetIfExists();
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static void StartupInit();
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static void PostTask(already_AddRefed<Runnable> task);
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/**
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* Posts an async operation to the media manager thread.
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* FunctionType must be a function that takes a `MozPromiseHolder&`.
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*
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* The returned promise is resolved or rejected by aFunction on the media
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* manager thread.
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*/
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template<typename MozPromiseType, typename FunctionType>
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static RefPtr<MozPromiseType>
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PostTask(const char* aName, FunctionType&& aFunction);
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#ifdef DEBUG
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static bool IsInMediaThread();
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#endif
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static bool Exists()
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{
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return !!sSingleton;
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}
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static nsresult NotifyRecordingStatusChange(nsPIDOMWindowInner* aWindow);
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NS_DECL_THREADSAFE_ISUPPORTS
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NS_DECL_NSIOBSERVER
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NS_DECL_NSIMEDIAMANAGERSERVICE
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media::Parent<media::NonE10s>* GetNonE10sParent();
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MediaEngine* GetBackend(uint64_t aWindowId = 0);
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WindowTable *GetActiveWindows() {
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MOZ_ASSERT(NS_IsMainThread());
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return &mActiveWindows;
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}
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GetUserMediaWindowListener *GetWindowListener(uint64_t aWindowId) {
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MOZ_ASSERT(NS_IsMainThread());
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return mActiveWindows.GetWeak(aWindowId);
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}
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void AddWindowID(uint64_t aWindowId, GetUserMediaWindowListener *aListener);
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void RemoveWindowID(uint64_t aWindowId);
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void SendPendingGUMRequest();
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bool IsWindowStillActive(uint64_t aWindowId) {
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return !!GetWindowListener(aWindowId);
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}
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bool IsWindowListenerStillActive(GetUserMediaWindowListener* aListener);
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// Note: also calls aListener->Remove(), even if inactive
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void RemoveFromWindowList(uint64_t aWindowID,
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GetUserMediaWindowListener *aListener);
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nsresult GetUserMedia(
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nsPIDOMWindowInner* aWindow,
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const dom::MediaStreamConstraints& aConstraints,
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nsIDOMGetUserMediaSuccessCallback* onSuccess,
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nsIDOMGetUserMediaErrorCallback* onError,
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dom::CallerType aCallerType);
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nsresult GetUserMediaDevices(nsPIDOMWindowInner* aWindow,
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const dom::MediaStreamConstraints& aConstraints,
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nsIGetUserMediaDevicesSuccessCallback* onSuccess,
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nsIDOMGetUserMediaErrorCallback* onError,
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uint64_t aInnerWindowID = 0,
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const nsAString& aCallID = nsString());
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nsresult EnumerateDevices(nsPIDOMWindowInner* aWindow,
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nsIGetUserMediaDevicesSuccessCallback* aOnSuccess,
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nsIDOMGetUserMediaErrorCallback* aOnFailure,
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dom::CallerType aCallerType);
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nsresult EnumerateDevices(nsPIDOMWindowInner* aWindow, dom::Promise& aPromise);
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void OnNavigation(uint64_t aWindowID);
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bool IsActivelyCapturingOrHasAPermission(uint64_t aWindowId);
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MediaEnginePrefs mPrefs;
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typedef nsTArray<RefPtr<MediaDevice>> SourceSet;
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virtual int AddDeviceChangeCallback(DeviceChangeCallback* aCallback) override;
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virtual void OnDeviceChange() override;
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private:
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typedef media::Pledge<SourceSet*, dom::MediaStreamError*> PledgeSourceSet;
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typedef media::Pledge<const char*, dom::MediaStreamError*> PledgeChar;
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typedef media::Pledge<bool, dom::MediaStreamError*> PledgeVoid;
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static nsresult GenerateUUID(nsAString& aResult);
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static nsresult AnonymizeId(nsAString& aId, const nsACString& aOriginKey);
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public: // TODO: make private once we upgrade to GCC 4.8+ on linux.
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static void AnonymizeDevices(SourceSet& aDevices, const nsACString& aOriginKey);
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static already_AddRefed<nsIWritableVariant> ToJSArray(SourceSet& aDevices);
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private:
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already_AddRefed<PledgeSourceSet>
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EnumerateRawDevices(uint64_t aWindowId,
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dom::MediaSourceEnum aVideoType,
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dom::MediaSourceEnum aAudioType,
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bool aFake);
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already_AddRefed<PledgeSourceSet>
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EnumerateDevicesImpl(uint64_t aWindowId,
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dom::MediaSourceEnum aVideoSrcType,
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dom::MediaSourceEnum aAudioSrcType,
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bool aFake = false);
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already_AddRefed<PledgeChar>
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SelectSettings(
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dom::MediaStreamConstraints& aConstraints,
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bool aIsChrome,
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RefPtr<media::Refcountable<UniquePtr<SourceSet>>>& aSources);
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void GetPref(nsIPrefBranch *aBranch, const char *aPref,
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const char *aData, int32_t *aVal);
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void GetPrefBool(nsIPrefBranch *aBranch, const char *aPref,
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const char *aData, bool *aVal);
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void GetPrefs(nsIPrefBranch *aBranch, const char *aData);
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// Make private because we want only one instance of this class
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MediaManager();
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~MediaManager() {}
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void Shutdown();
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void StopScreensharing(uint64_t aWindowID);
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/**
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* Calls aCallback with a GetUserMediaWindowListener argument once for
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* each window listener associated with aWindow and its child windows.
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*/
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template<typename FunctionType>
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void IterateWindowListeners(nsPIDOMWindowInner *aWindow,
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const FunctionType& aCallback);
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void StopMediaStreams();
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void RemoveMediaDevicesCallback(uint64_t aWindowID);
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// ONLY access from MainThread so we don't need to lock
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WindowTable mActiveWindows;
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nsRefPtrHashtable<nsStringHashKey, GetUserMediaTask> mActiveCallbacks;
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nsClassHashtable<nsUint64HashKey, nsTArray<nsString>> mCallIds;
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nsTArray<RefPtr<dom::GetUserMediaRequest>> mPendingGUMRequest;
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// Always exists
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nsAutoPtr<base::Thread> mMediaThread;
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nsCOMPtr<nsIAsyncShutdownBlocker> mShutdownBlocker;
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// ONLY accessed from MediaManagerThread
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RefPtr<MediaEngine> mBackend;
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static StaticRefPtr<MediaManager> sSingleton;
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media::CoatCheck<PledgeSourceSet> mOutstandingPledges;
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media::CoatCheck<PledgeChar> mOutstandingCharPledges;
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nsTArray<nsString> mDeviceIDs;
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public:
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media::CoatCheck<media::Pledge<nsCString>> mGetPrincipalKeyPledges;
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RefPtr<media::Parent<media::NonE10s>> mNonE10sParent;
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};
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} // namespace mozilla
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#endif // MOZILLA_MEDIAMANAGER_H
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