gecko-dev/dom/media/MediaManager.h
Jan-Ivar Bruaroey 9e4998ef79 Bug 1284683 - add unanonymized nsIMediaDevice.rawId for browser-chrome use. r=jesup
MozReview-Commit-ID: A4RDfdZAF21

--HG--
extra : rebase_source : 0c1ca7b5a413daad31a95dd7eb42277a4e984f2f
2016-08-18 00:01:00 -04:00

348 lines
12 KiB
C++

/* 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_MEDIAMANAGER_H
#define MOZILLA_MEDIAMANAGER_H
#include "MediaEngine.h"
#include "DeviceChangeCallback.h"
#include "mozilla/Services.h"
#include "mozilla/unused.h"
#include "nsAutoPtr.h"
#include "nsIMediaManager.h"
#include "nsHashKeys.h"
#include "nsGlobalWindow.h"
#include "nsClassHashtable.h"
#include "nsRefPtrHashtable.h"
#include "nsIObserver.h"
#include "nsIPrefService.h"
#include "nsIPrefBranch.h"
#include "nsPIDOMWindow.h"
#include "nsIDOMNavigatorUserMedia.h"
#include "nsXULAppAPI.h"
#include "mozilla/Attributes.h"
#include "mozilla/Preferences.h"
#include "mozilla/StaticPtr.h"
#include "mozilla/dom/MediaStreamBinding.h"
#include "mozilla/dom/MediaStreamTrackBinding.h"
#include "mozilla/dom/MediaStreamError.h"
#include "mozilla/media/MediaChild.h"
#include "mozilla/media/MediaParent.h"
#include "mozilla/Logging.h"
#include "mozilla/UniquePtr.h"
#include "DOMMediaStream.h"
#ifdef MOZ_WEBRTC
#include "mtransport/runnable_utils.h"
#endif
// Note, these suck in Windows headers, unfortunately.
#include "base/thread.h"
#include "base/task.h"
#ifdef MOZ_WIDGET_GONK
#include "DOMCameraManager.h"
#endif
namespace mozilla {
namespace dom {
struct MediaStreamConstraints;
struct MediaTrackConstraints;
struct MediaTrackConstraintSet;
} // namespace dom
class MediaManager;
class GetUserMediaCallbackMediaStreamListener;
class GetUserMediaTask;
extern LogModule* GetMediaManagerLog();
#define MM_LOG(msg) MOZ_LOG(GetMediaManagerLog(), mozilla::LogLevel::Debug, msg)
class MediaDevice : public nsIMediaDevice
{
public:
typedef MediaEngineSource Source;
NS_DECL_THREADSAFE_ISUPPORTS
NS_DECL_NSIMEDIADEVICE
void SetId(const nsAString& aID);
void SetRawId(const nsAString& aID);
virtual uint32_t GetBestFitnessDistance(
const nsTArray<const NormalizedConstraintSet*>& aConstraintSets);
virtual Source* GetSource() = 0;
nsresult Allocate(const dom::MediaTrackConstraints &aConstraints,
const MediaEnginePrefs &aPrefs,
const nsACString& aOrigin,
const char** aOutBadConstraint);
nsresult Restart(const dom::MediaTrackConstraints &aConstraints,
const MediaEnginePrefs &aPrefs,
const char** aOutBadConstraint);
nsresult Deallocate();
protected:
virtual ~MediaDevice() {}
explicit MediaDevice(MediaEngineSource* aSource, bool aIsVideo);
static uint32_t FitnessDistance(nsString aN,
const dom::OwningStringOrStringSequenceOrConstrainDOMStringParameters& aConstraint);
private:
static bool StringsContain(const dom::OwningStringOrStringSequence& aStrings,
nsString aN);
static uint32_t FitnessDistance(nsString aN,
const dom::ConstrainDOMStringParameters& aParams);
protected:
nsString mName;
nsString mID;
nsString mRawID;
dom::MediaSourceEnum mMediaSource;
RefPtr<MediaEngineSource> mSource;
RefPtr<MediaEngineSource::AllocationHandle> mAllocationHandle;
public:
dom::MediaSourceEnum GetMediaSource() {
return mMediaSource;
}
bool mIsVideo;
};
class VideoDevice : public MediaDevice
{
public:
typedef MediaEngineVideoSource Source;
explicit VideoDevice(Source* aSource);
NS_IMETHOD GetType(nsAString& aType) override;
Source* GetSource() override;
};
class AudioDevice : public MediaDevice
{
public:
typedef MediaEngineAudioSource Source;
explicit AudioDevice(Source* aSource);
NS_IMETHOD GetType(nsAString& aType) override;
Source* GetSource() override;
};
class GetUserMediaNotificationEvent: public Runnable
{
public:
enum GetUserMediaStatus {
STARTING,
STOPPING,
STOPPED_TRACK,
};
GetUserMediaNotificationEvent(GetUserMediaCallbackMediaStreamListener* aListener,
GetUserMediaStatus aStatus,
bool aIsAudio, bool aIsVideo, uint64_t aWindowID);
GetUserMediaNotificationEvent(GetUserMediaStatus aStatus,
already_AddRefed<DOMMediaStream> aStream,
OnTracksAvailableCallback* aOnTracksAvailableCallback,
bool aIsAudio, bool aIsVideo, uint64_t aWindowID,
already_AddRefed<nsIDOMGetUserMediaErrorCallback> aError);
virtual ~GetUserMediaNotificationEvent();
NS_IMETHOD Run() override;
protected:
RefPtr<GetUserMediaCallbackMediaStreamListener> mListener; // threadsafe
RefPtr<DOMMediaStream> mStream;
nsAutoPtr<OnTracksAvailableCallback> mOnTracksAvailableCallback;
GetUserMediaStatus mStatus;
bool mIsAudio;
bool mIsVideo;
uint64_t mWindowID;
RefPtr<nsIDOMGetUserMediaErrorCallback> mOnFailure;
};
typedef enum {
MEDIA_START,
MEDIA_STOP,
MEDIA_STOP_TRACK,
MEDIA_DIRECT_LISTENERS,
} MediaOperation;
class ReleaseMediaOperationResource : public Runnable
{
public:
ReleaseMediaOperationResource(already_AddRefed<DOMMediaStream> aStream,
OnTracksAvailableCallback* aOnTracksAvailableCallback):
mStream(aStream),
mOnTracksAvailableCallback(aOnTracksAvailableCallback) {}
NS_IMETHOD Run() override {return NS_OK;}
private:
RefPtr<DOMMediaStream> mStream;
nsAutoPtr<OnTracksAvailableCallback> mOnTracksAvailableCallback;
};
typedef nsTArray<RefPtr<GetUserMediaCallbackMediaStreamListener> > StreamListeners;
typedef nsClassHashtable<nsUint64HashKey, StreamListeners> WindowTable;
// we could add MediaManager if needed
typedef void (*WindowListenerCallback)(MediaManager *aThis,
uint64_t aWindowID,
StreamListeners *aListeners,
void *aData);
class MediaManager final : public nsIMediaManagerService,
public nsIObserver
,public DeviceChangeCallback
{
friend GetUserMediaCallbackMediaStreamListener;
public:
static already_AddRefed<MediaManager> GetInstance();
// NOTE: never Dispatch(....,NS_DISPATCH_SYNC) to the MediaManager
// thread from the MainThread, as we NS_DISPATCH_SYNC to MainThread
// from MediaManager thread.
static MediaManager* Get();
static MediaManager* GetIfExists();
static void StartupInit();
static void PostTask(already_AddRefed<Runnable> task);
#ifdef DEBUG
static bool IsInMediaThread();
#endif
static bool Exists()
{
return !!sSingleton;
}
static nsresult NotifyRecordingStatusChange(nsPIDOMWindowInner* aWindow,
const nsString& aMsg,
const bool& aIsAudio,
const bool& aIsVideo);
NS_DECL_THREADSAFE_ISUPPORTS
NS_DECL_NSIOBSERVER
NS_DECL_NSIMEDIAMANAGERSERVICE
media::Parent<media::NonE10s>* GetNonE10sParent();
MediaEngine* GetBackend(uint64_t aWindowId = 0);
StreamListeners *GetWindowListeners(uint64_t aWindowId) {
MOZ_ASSERT(NS_IsMainThread());
return mActiveWindows.Get(aWindowId);
}
void RemoveWindowID(uint64_t aWindowId);
bool IsWindowStillActive(uint64_t aWindowId) {
return !!GetWindowListeners(aWindowId);
}
// Note: also calls aListener->Remove(), even if inactive
void RemoveFromWindowList(uint64_t aWindowID,
GetUserMediaCallbackMediaStreamListener *aListener);
nsresult GetUserMedia(
nsPIDOMWindowInner* aWindow,
const dom::MediaStreamConstraints& aConstraints,
nsIDOMGetUserMediaSuccessCallback* onSuccess,
nsIDOMGetUserMediaErrorCallback* onError);
nsresult GetUserMediaDevices(nsPIDOMWindowInner* aWindow,
const dom::MediaStreamConstraints& aConstraints,
nsIGetUserMediaDevicesSuccessCallback* onSuccess,
nsIDOMGetUserMediaErrorCallback* onError,
uint64_t aInnerWindowID = 0,
const nsAString& aCallID = nsString());
nsresult EnumerateDevices(nsPIDOMWindowInner* aWindow,
nsIGetUserMediaDevicesSuccessCallback* aOnSuccess,
nsIDOMGetUserMediaErrorCallback* aOnFailure);
nsresult EnumerateDevices(nsPIDOMWindowInner* aWindow, dom::Promise& aPromise);
void OnNavigation(uint64_t aWindowID);
bool IsActivelyCapturingOrHasAPermission(uint64_t aWindowId);
MediaEnginePrefs mPrefs;
typedef nsTArray<RefPtr<MediaDevice>> SourceSet;
static bool IsPrivateBrowsing(nsPIDOMWindowInner* window);
virtual int AddDeviceChangeCallback(DeviceChangeCallback* aCallback) override;
virtual void OnDeviceChange() override;
private:
typedef media::Pledge<SourceSet*, dom::MediaStreamError*> PledgeSourceSet;
typedef media::Pledge<const char*, dom::MediaStreamError*> PledgeChar;
typedef media::Pledge<bool, dom::MediaStreamError*> PledgeVoid;
static bool IsPrivileged();
static bool IsLoop(nsIURI* aDocURI);
static nsresult GenerateUUID(nsAString& aResult);
static nsresult AnonymizeId(nsAString& aId, const nsACString& aOriginKey);
public: // TODO: make private once we upgrade to GCC 4.8+ on linux.
static void AnonymizeDevices(SourceSet& aDevices, const nsACString& aOriginKey);
static already_AddRefed<nsIWritableVariant> ToJSArray(SourceSet& aDevices);
private:
already_AddRefed<PledgeSourceSet>
EnumerateRawDevices(uint64_t aWindowId,
dom::MediaSourceEnum aVideoType,
dom::MediaSourceEnum aAudioType,
bool aFake);
already_AddRefed<PledgeSourceSet>
EnumerateDevicesImpl(uint64_t aWindowId,
dom::MediaSourceEnum aVideoSrcType,
dom::MediaSourceEnum aAudioSrcType,
bool aFake = false);
already_AddRefed<PledgeChar>
SelectSettings(
dom::MediaStreamConstraints& aConstraints,
RefPtr<media::Refcountable<UniquePtr<SourceSet>>>& aSources);
StreamListeners* AddWindowID(uint64_t aWindowId);
WindowTable *GetActiveWindows() {
MOZ_ASSERT(NS_IsMainThread());
return &mActiveWindows;
}
void GetPref(nsIPrefBranch *aBranch, const char *aPref,
const char *aData, int32_t *aVal);
void GetPrefBool(nsIPrefBranch *aBranch, const char *aPref,
const char *aData, bool *aVal);
void GetPrefs(nsIPrefBranch *aBranch, const char *aData);
// Make private because we want only one instance of this class
MediaManager();
~MediaManager() {}
void Shutdown();
void StopScreensharing(uint64_t aWindowID);
void IterateWindowListeners(nsPIDOMWindowInner *aWindow,
WindowListenerCallback aCallback,
void *aData);
void StopMediaStreams();
void RemoveMediaDevicesCallback(uint64_t aWindowID);
// ONLY access from MainThread so we don't need to lock
WindowTable mActiveWindows;
nsRefPtrHashtable<nsStringHashKey, GetUserMediaTask> mActiveCallbacks;
nsClassHashtable<nsUint64HashKey, nsTArray<nsString>> mCallIds;
// Always exists
nsAutoPtr<base::Thread> mMediaThread;
nsCOMPtr<nsIAsyncShutdownBlocker> mShutdownBlocker;
// ONLY accessed from MediaManagerThread
RefPtr<MediaEngine> mBackend;
static StaticRefPtr<MediaManager> sSingleton;
media::CoatCheck<PledgeSourceSet> mOutstandingPledges;
media::CoatCheck<PledgeChar> mOutstandingCharPledges;
media::CoatCheck<PledgeVoid> mOutstandingVoidPledges;
#if defined(MOZ_B2G_CAMERA) && defined(MOZ_WIDGET_GONK)
RefPtr<nsDOMCameraManager> mCameraManager;
#endif
public:
media::CoatCheck<media::Pledge<nsCString>> mGetOriginKeyPledges;
UniquePtr<media::Parent<media::NonE10s>> mNonE10sParent;
};
} // namespace mozilla
#endif // MOZILLA_MEDIAMANAGER_H