The Tor Browser: dom/camera/CameraPreviewMediaStream.h@97036ab72558

Conditionally force memory storage according to privacy.thirdparty.isolate;
This solves Tor bug #9701, complying with disk avoidance documented in
https://www.torproject.org/projects/torbrowser/design/#disk-avoidance.

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

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

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

     5 #ifndef DOM_CAMERA_CAMERAPREVIEWMEDIASTREAM_H

     6 #define DOM_CAMERA_CAMERAPREVIEWMEDIASTREAM_H

     8 #include "VideoFrameContainer.h"

     9 #include "MediaStreamGraph.h"

    10 #include "mozilla/Mutex.h"

    12 namespace mozilla {

    14 class CameraPreviewFrameCallback {

    15 public:

    16   virtual void OnNewFrame(const gfxIntSize& aIntrinsicSize, layers::Image* aImage) = 0;

    17 };

    19 /**

    20  * This is a stream for camere preview.

    21  *

    22  * XXX It is a temporary fix of SourceMediaStream.

    23  * A camera preview requests no delay and no buffering stream.

    24  * But the SourceMediaStream do not support it.

    25  */

    26 class CameraPreviewMediaStream : public MediaStream

    27 {

    28   typedef mozilla::layers::Image Image;

    30 public:

    31   CameraPreviewMediaStream(DOMMediaStream* aWrapper);

    33   virtual void AddAudioOutput(void* aKey) MOZ_OVERRIDE;

    34   virtual void SetAudioOutputVolume(void* aKey, float aVolume) MOZ_OVERRIDE;

    35   virtual void RemoveAudioOutput(void* aKey) MOZ_OVERRIDE;

    36   virtual void AddVideoOutput(VideoFrameContainer* aContainer) MOZ_OVERRIDE;

    37   virtual void RemoveVideoOutput(VideoFrameContainer* aContainer) MOZ_OVERRIDE;

    38   virtual void ChangeExplicitBlockerCount(int32_t aDelta) MOZ_OVERRIDE;

    39   virtual void AddListener(MediaStreamListener* aListener) MOZ_OVERRIDE;

    40   virtual void RemoveListener(MediaStreamListener* aListener) MOZ_OVERRIDE;

    41   virtual void Destroy();

    43   // Call these on any thread.

    44   void SetCurrentFrame(const gfxIntSize& aIntrinsicSize, Image* aImage);

    45   void ClearCurrentFrame();

    47   void SetFrameCallback(CameraPreviewFrameCallback* aCallback) {

    48     mFrameCallback = aCallback;

    49   }

    51 protected:

    52   // mMutex protects all the class' fields.

    53   // This class is not registered to MediaStreamGraph.

    54   // It needs to protect all the fields.

    55   Mutex mMutex;

    56   CameraPreviewFrameCallback* mFrameCallback;

    57 };

    59 }

    61 #endif // DOM_CAMERA_CAMERAPREVIEWMEDIASTREAM_H

The Tor Browser / file revision

dom/camera/CameraPreviewMediaStream.h@97036ab72558

dom/camera/CameraPreviewMediaStream.h