The Tor Browser: dom/camera/DOMCameraControlListener.cpp@6474c204b198 (annotated)

dom/camera/DOMCameraControlListener.cpp@6474c204b198 (annotated)

dom/camera/DOMCameraControlListener.cpp

Wed, 31 Dec 2014 06:09:35 +0100

author: Michael Schloh von Bennewitz <michael@schloh.com>
date: Wed, 31 Dec 2014 06:09:35 +0100
changeset 0: 6474c204b198
permissions: -rw-r--r--

Cloned upstream origin tor-browser at tor-browser-31.3.0esr-4.5-1-build1
revision ID fc1c9ff7c1b2defdbc039f12214767608f46423f for hacking purpose.

 /* 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/. */
 #include "DOMCameraControlListener.h"
 #include "nsThreadUtils.h"
 #include "nsDOMFile.h"
 #include "CameraCommon.h"
 #include "DOMCameraControl.h"
 #include "CameraPreviewMediaStream.h"
 #include "mozilla/dom/CameraManagerBinding.h"
 using namespace mozilla;
 using namespace mozilla::dom;
 DOMCameraControlListener::DOMCameraControlListener(nsDOMCameraControl* aDOMCameraControl,
                                                    CameraPreviewMediaStream* aStream)
   : mDOMCameraControl(new nsMainThreadPtrHolder<nsDOMCameraControl>(aDOMCameraControl))
   , mStream(aStream)
 {
   DOM_CAMERA_LOGT("%s:%d : this=%p, camera=%p, stream=%p\n",
     __func__, __LINE__, this, aDOMCameraControl, aStream);
 }
 DOMCameraControlListener::~DOMCameraControlListener()
 {
   DOM_CAMERA_LOGT("%s:%d : this=%p\n", __func__, __LINE__, this);
 }
 // Boilerplate callback runnable
 class DOMCameraControlListener::DOMCallback : public nsRunnable
 {
 public:
   DOMCallback(nsMainThreadPtrHandle<nsDOMCameraControl> aDOMCameraControl)
     : mDOMCameraControl(aDOMCameraControl)
   {
     MOZ_COUNT_CTOR(DOMCameraControlListener::DOMCallback);
   }
   virtual ~DOMCallback()
   {
     MOZ_COUNT_DTOR(DOMCameraControlListener::DOMCallback);
   }
   virtual void RunCallback(nsDOMCameraControl* aDOMCameraControl) = 0;
   NS_IMETHOD
   Run() MOZ_OVERRIDE
   {
     MOZ_ASSERT(NS_IsMainThread());
     nsRefPtr<nsDOMCameraControl> camera = mDOMCameraControl.get();
     if (camera) {
       RunCallback(camera);
     }
     return NS_OK;
   }
 protected:
   nsMainThreadPtrHandle<nsDOMCameraControl> mDOMCameraControl;
 };
 // Specific callback handlers
 void
 DOMCameraControlListener::OnHardwareStateChange(HardwareState aState)
 {
   class Callback : public DOMCallback
   {
   public:
     Callback(nsMainThreadPtrHandle<nsDOMCameraControl> aDOMCameraControl,
              HardwareState aState)
       : DOMCallback(aDOMCameraControl)
       , mState(aState)
     { }
     void
     RunCallback(nsDOMCameraControl* aDOMCameraControl) MOZ_OVERRIDE
     {
       aDOMCameraControl->OnHardwareStateChange(mState);
     }
   protected:
     HardwareState mState;
   };
   NS_DispatchToMainThread(new Callback(mDOMCameraControl, aState));
 }
 void
 DOMCameraControlListener::OnPreviewStateChange(PreviewState aState)
 {
   class Callback : public DOMCallback
   {
   public:
     Callback(nsMainThreadPtrHandle<nsDOMCameraControl> aDOMCameraControl,
              PreviewState aState)
       : DOMCallback(aDOMCameraControl)
       , mState(aState)
     { }
     void
     RunCallback(nsDOMCameraControl* aDOMCameraControl) MOZ_OVERRIDE
     {
       aDOMCameraControl->OnPreviewStateChange(mState);
     }
   protected:
     PreviewState mState;
   };
   switch (aState) {
     case kPreviewStopped:
       // Clear the current frame right away, without dispatching a
       //  runnable. This is an ugly coupling between the camera's
       //  SurfaceTextureClient and the MediaStream/ImageContainer,
       //  but without it, the preview can fail to start.
       DOM_CAMERA_LOGI("Preview stopped, clearing current frame\n");
       mStream->ClearCurrentFrame();
       break;
     case kPreviewPaused:
       // In the paused state, we still want to reflect the change
       //  in preview state, but we don't want to clear the current
       //  frame as above, since doing so seems to cause genlock
       //  problems when we restart the preview. See bug 957749.
       DOM_CAMERA_LOGI("Preview paused\n");
       break;
     case kPreviewStarted:
       DOM_CAMERA_LOGI("Preview started\n");
       break;
     default:
       DOM_CAMERA_LOGE("Unknown preview state %d\n", aState);
       MOZ_ASSUME_UNREACHABLE("Invalid preview state");
       return;
   }
   NS_DispatchToMainThread(new Callback(mDOMCameraControl, aState));
 }
 void
 DOMCameraControlListener::OnRecorderStateChange(RecorderState aState,
                                                 int32_t aStatus, int32_t aTrackNum)
 {
   class Callback : public DOMCallback
   {
   public:
     Callback(nsMainThreadPtrHandle<nsDOMCameraControl> aDOMCameraControl,
              RecorderState aState,
              int32_t aStatus,
              int32_t aTrackNum)
       : DOMCallback(aDOMCameraControl)
       , mState(aState)
       , mStatus(aStatus)
       , mTrackNum(aTrackNum)
     { }
     void
     RunCallback(nsDOMCameraControl* aDOMCameraControl) MOZ_OVERRIDE
     {
       aDOMCameraControl->OnRecorderStateChange(mState, mStatus, mTrackNum);
     }
   protected:
     RecorderState mState;
     int32_t mStatus;
     int32_t mTrackNum;
   };
   NS_DispatchToMainThread(new Callback(mDOMCameraControl, aState, aStatus, aTrackNum));
 }
 void
 DOMCameraControlListener::OnConfigurationChange(const CameraListenerConfiguration& aConfiguration)
 {
   class Callback : public DOMCallback
   {
   public:
     Callback(nsMainThreadPtrHandle<nsDOMCameraControl> aDOMCameraControl,
              const CameraListenerConfiguration& aConfiguration)
       : DOMCallback(aDOMCameraControl)
       , mConfiguration(aConfiguration)
     { }
     void
     RunCallback(nsDOMCameraControl* aDOMCameraControl) MOZ_OVERRIDE
     {
       nsRefPtr<nsDOMCameraControl::DOMCameraConfiguration> config =
         new nsDOMCameraControl::DOMCameraConfiguration();
       switch (mConfiguration.mMode) {
         case ICameraControl::kVideoMode:
           config->mMode = CameraMode::Video;
           break;
         case ICameraControl::kPictureMode:
           config->mMode = CameraMode::Picture;
           break;
         default:
           DOM_CAMERA_LOGI("Camera mode still unspecified, nothing to do\n");
           return;
       }
       // Map CameraControl parameters to their DOM-facing equivalents
       config->mRecorderProfile = mConfiguration.mRecorderProfile;
       config->mPreviewSize.mWidth = mConfiguration.mPreviewSize.width;
       config->mPreviewSize.mHeight = mConfiguration.mPreviewSize.height;
       config->mMaxMeteringAreas = mConfiguration.mMaxMeteringAreas;
       config->mMaxFocusAreas = mConfiguration.mMaxFocusAreas;
       aDOMCameraControl->OnConfigurationChange(config);
     }
   protected:
     const CameraListenerConfiguration mConfiguration;
   };
   NS_DispatchToMainThread(new Callback(mDOMCameraControl, aConfiguration));
 }
 void
 DOMCameraControlListener::OnAutoFocusMoving(bool aIsMoving)
 {
   class Callback : public DOMCallback
   {
   public:
     Callback(nsMainThreadPtrHandle<nsDOMCameraControl> aDOMCameraControl, bool aIsMoving)
       : DOMCallback(aDOMCameraControl)
       , mIsMoving(aIsMoving)
     { }
     void
     RunCallback(nsDOMCameraControl* aDOMCameraControl) MOZ_OVERRIDE
     {
       aDOMCameraControl->OnAutoFocusMoving(mIsMoving);
     }
   protected:
     bool mIsMoving;
   };
   NS_DispatchToMainThread(new Callback(mDOMCameraControl, aIsMoving));
 }
 void
 DOMCameraControlListener::OnFacesDetected(const nsTArray<ICameraControl::Face>& aFaces)
 {
   class Callback : public DOMCallback
   {
   public:
     Callback(nsMainThreadPtrHandle<nsDOMCameraControl> aDOMCameraControl,
              const nsTArray<ICameraControl::Face>& aFaces)
       : DOMCallback(aDOMCameraControl)
       , mFaces(aFaces)
     { }
     void
     RunCallback(nsDOMCameraControl* aDOMCameraControl) MOZ_OVERRIDE
     {
       aDOMCameraControl->OnFacesDetected(mFaces);
     }
   protected:
     const nsTArray<ICameraControl::Face> mFaces;
   };
   NS_DispatchToMainThread(new Callback(mDOMCameraControl, aFaces));
 }
 void
 DOMCameraControlListener::OnShutter()
 {
   class Callback : public DOMCallback
   {
   public:
     Callback(nsMainThreadPtrHandle<nsDOMCameraControl> aDOMCameraControl)
       : DOMCallback(aDOMCameraControl)
     { }
     void
     RunCallback(nsDOMCameraControl* aDOMCameraControl) MOZ_OVERRIDE
     {
       aDOMCameraControl->OnShutter();
     }
   };
   NS_DispatchToMainThread(new Callback(mDOMCameraControl));
 }
 bool
 DOMCameraControlListener::OnNewPreviewFrame(layers::Image* aImage, uint32_t aWidth, uint32_t aHeight)
 {
   DOM_CAMERA_LOGI("OnNewPreviewFrame: got %d x %d frame\n", aWidth, aHeight);
   mStream->SetCurrentFrame(gfxIntSize(aWidth, aHeight), aImage);
   return true;
 }
 void
 DOMCameraControlListener::OnAutoFocusComplete(bool aAutoFocusSucceeded)
 {
   class Callback : public DOMCallback
   {
   public:
     Callback(nsMainThreadPtrHandle<nsDOMCameraControl> aDOMCameraControl,
              bool aAutoFocusSucceeded)
       : DOMCallback(aDOMCameraControl)
       , mAutoFocusSucceeded(aAutoFocusSucceeded)
     { }
     void
     RunCallback(nsDOMCameraControl* aDOMCameraControl) MOZ_OVERRIDE
     {
       aDOMCameraControl->OnAutoFocusComplete(mAutoFocusSucceeded);
     }
   protected:
     bool mAutoFocusSucceeded;
   };
   NS_DispatchToMainThread(new Callback(mDOMCameraControl, aAutoFocusSucceeded));
 }
 void
 DOMCameraControlListener::OnTakePictureComplete(uint8_t* aData, uint32_t aLength, const nsAString& aMimeType)
 {
   class Callback : public DOMCallback
   {
   public:
     Callback(nsMainThreadPtrHandle<nsDOMCameraControl> aDOMCameraControl,
              uint8_t* aData, uint32_t aLength, const nsAString& aMimeType)
       : DOMCallback(aDOMCameraControl)
       , mData(aData)
       , mLength(aLength)
       , mMimeType(aMimeType)
     { }
     void
     RunCallback(nsDOMCameraControl* aDOMCameraControl) MOZ_OVERRIDE
     {
       nsCOMPtr<nsIDOMBlob> picture = new nsDOMMemoryFile(static_cast<void*>(mData),
                                                          static_cast<uint64_t>(mLength),
                                                          mMimeType);
       aDOMCameraControl->OnTakePictureComplete(picture);
     }
   protected:
     uint8_t* mData;
     uint32_t mLength;
     nsString mMimeType;
   };
   NS_DispatchToMainThread(new Callback(mDOMCameraControl, aData, aLength, aMimeType));
 }
 void
 DOMCameraControlListener::OnError(CameraErrorContext aContext, CameraError aError)
 {
   class Callback : public DOMCallback
   {
   public:
     Callback(nsMainThreadPtrHandle<nsDOMCameraControl> aDOMCameraControl,
              CameraErrorContext aContext,
              CameraError aError)
       : DOMCallback(aDOMCameraControl)
       , mContext(aContext)
       , mError(aError)
     { }
     virtual void
     RunCallback(nsDOMCameraControl* aDOMCameraControl) MOZ_OVERRIDE
     {
       nsString error;
       switch (mError) {
         case kErrorServiceFailed:
           error = NS_LITERAL_STRING("ErrorServiceFailed");
           break;
         case kErrorSetPictureSizeFailed:
           error = NS_LITERAL_STRING("ErrorSetPictureSizeFailed");
           break;
         case kErrorSetThumbnailSizeFailed:
           error = NS_LITERAL_STRING("ErrorSetThumbnailSizeFailed");
           break;
         case kErrorApiFailed:
           // XXXmikeh legacy error placeholder
           error = NS_LITERAL_STRING("FAILURE");
           break;
         default:
           error = NS_LITERAL_STRING("ErrorUnknown");
           break;
       }
       aDOMCameraControl->OnError(mContext, error);
     }
   protected:
     CameraErrorContext mContext;
     CameraError mError;
   };
   NS_DispatchToMainThread(new Callback(mDOMCameraControl, aContext, aError));
 }

The Tor Browser / annotate

dom/camera/DOMCameraControlListener.cpp@6474c204b198 (annotated)

dom/camera/DOMCameraControlListener.cpp