зеркало из https://github.com/mozilla/gecko-dev.git
246 строки
9.7 KiB
C++
246 строки
9.7 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 DOM_CAMERA_DOMCAMERACONTROL_H
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#define DOM_CAMERA_DOMCAMERACONTROL_H
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#include "nsCOMPtr.h"
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#include "nsAutoPtr.h"
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#include "nsCycleCollectionParticipant.h"
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#include "mozilla/dom/CameraControlBinding.h"
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#include "mozilla/dom/Promise.h"
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#include "ICameraControl.h"
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#include "CameraCommon.h"
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#include "DOMMediaStream.h"
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#include "AudioChannelAgent.h"
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#include "nsProxyRelease.h"
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#include "nsHashPropertyBag.h"
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#include "DeviceStorage.h"
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#include "DOMCameraControlListener.h"
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#include "nsWeakReference.h"
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#ifdef MOZ_WIDGET_GONK
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#include "nsITimer.h"
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#endif
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class nsDOMDeviceStorage;
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class nsPIDOMWindow;
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class nsIDOMBlob;
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namespace mozilla {
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namespace dom {
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class CameraCapabilities;
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struct CameraPictureOptions;
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struct CameraStartRecordingOptions;
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struct CameraRegion;
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struct CameraSize;
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template<typename T> class Optional;
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}
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class ErrorResult;
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class StartRecordingHelper;
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#define NS_DOM_CAMERA_CONTROL_CID \
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{ 0x3700c096, 0xf920, 0x438d, \
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{ 0x8b, 0x3f, 0x15, 0xb3, 0xc9, 0x96, 0x23, 0x62 } }
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// Main camera control.
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class nsDOMCameraControl final : public DOMMediaStream
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, public nsSupportsWeakReference
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{
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public:
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NS_DECLARE_STATIC_IID_ACCESSOR(NS_DOM_CAMERA_CONTROL_CID)
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NS_DECL_CYCLE_COLLECTION_CLASS_INHERITED(nsDOMCameraControl, DOMMediaStream)
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NS_DECL_ISUPPORTS_INHERITED
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// Because this header's filename doesn't match its C++ or DOM-facing
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// classname, we can't rely on the [Func="..."] WebIDL tag to implicitly
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// include the right header for us; instead we must explicitly include a
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// HasSupport() method in each header. We can get rid of these with the
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// Great Renaming proposed in bug 983177.
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static bool HasSupport(JSContext* aCx, JSObject* aGlobal);
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nsDOMCameraControl(uint32_t aCameraId,
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const dom::CameraConfiguration& aInitialConfig,
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dom::Promise* aPromise,
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nsPIDOMWindow* aWindow);
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void Shutdown();
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nsPIDOMWindow* GetParentObject() const { return mWindow; }
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// Attributes.
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void GetEffect(nsString& aEffect, ErrorResult& aRv);
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void SetEffect(const nsAString& aEffect, ErrorResult& aRv);
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void GetWhiteBalanceMode(nsString& aMode, ErrorResult& aRv);
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void SetWhiteBalanceMode(const nsAString& aMode, ErrorResult& aRv);
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void GetSceneMode(nsString& aMode, ErrorResult& aRv);
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void SetSceneMode(const nsAString& aMode, ErrorResult& aRv);
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void GetFlashMode(nsString& aMode, ErrorResult& aRv);
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void SetFlashMode(const nsAString& aMode, ErrorResult& aRv);
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void GetFocusMode(nsString& aMode, ErrorResult& aRv);
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void SetFocusMode(const nsAString& aMode, ErrorResult& aRv);
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double GetZoom(ErrorResult& aRv);
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void SetZoom(double aZoom, ErrorResult& aRv);
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double GetFocalLength(ErrorResult& aRv);
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double GetFocusDistanceNear(ErrorResult& aRv);
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double GetFocusDistanceOptimum(ErrorResult& aRv);
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double GetFocusDistanceFar(ErrorResult& aRv);
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void SetExposureCompensation(double aCompensation, ErrorResult& aRv);
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double GetExposureCompensation(ErrorResult& aRv);
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int32_t SensorAngle();
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already_AddRefed<dom::CameraCapabilities> Capabilities();
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void GetIsoMode(nsString& aMode, ErrorResult& aRv);
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void SetIsoMode(const nsAString& aMode, ErrorResult& aRv);
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double GetPictureQuality(ErrorResult& aRv);
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void SetPictureQuality(double aQuality, ErrorResult& aRv);
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void GetMeteringMode(nsString& aMode, ErrorResult& aRv);
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void SetMeteringMode(const nsAString& aMode, ErrorResult& aRv);
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// Methods.
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already_AddRefed<dom::Promise> SetConfiguration(const dom::CameraConfiguration& aConfiguration,
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ErrorResult& aRv);
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void GetMeteringAreas(nsTArray<dom::CameraRegion>& aAreas, ErrorResult& aRv);
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void SetMeteringAreas(const dom::Optional<dom::Sequence<dom::CameraRegion> >& aAreas, ErrorResult& aRv);
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void GetFocusAreas(nsTArray<dom::CameraRegion>& aAreas, ErrorResult& aRv);
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void SetFocusAreas(const dom::Optional<dom::Sequence<dom::CameraRegion> >& aAreas, ErrorResult& aRv);
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void GetPictureSize(dom::CameraSize& aSize, ErrorResult& aRv);
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void SetPictureSize(const dom::CameraSize& aSize, ErrorResult& aRv);
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void GetThumbnailSize(dom::CameraSize& aSize, ErrorResult& aRv);
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void SetThumbnailSize(const dom::CameraSize& aSize, ErrorResult& aRv);
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already_AddRefed<dom::Promise> AutoFocus(ErrorResult& aRv);
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void StartFaceDetection(ErrorResult& aRv);
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void StopFaceDetection(ErrorResult& aRv);
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already_AddRefed<dom::Promise> TakePicture(const dom::CameraPictureOptions& aOptions,
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ErrorResult& aRv);
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already_AddRefed<dom::Promise> StartRecording(const dom::CameraStartRecordingOptions& aOptions,
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nsDOMDeviceStorage& storageArea,
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const nsAString& filename,
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ErrorResult& aRv);
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void StopRecording(ErrorResult& aRv);
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void ResumePreview(ErrorResult& aRv);
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already_AddRefed<dom::Promise> ReleaseHardware(ErrorResult& aRv);
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void ResumeContinuousFocus(ErrorResult& aRv);
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virtual JSObject* WrapObject(JSContext* aCx, JS::Handle<JSObject*> aGivenProto) override;
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operator nsISupports*() { return static_cast<DOMMediaStream*>(this); }
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#ifdef MOZ_WIDGET_GONK
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static void PreinitCameraHardware();
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static void DiscardCachedCameraInstance(nsITimer* aTimer, void* aClosure);
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#endif
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IMPL_EVENT_HANDLER(facesdetected)
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IMPL_EVENT_HANDLER(shutter)
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IMPL_EVENT_HANDLER(close)
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IMPL_EVENT_HANDLER(recorderstatechange)
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IMPL_EVENT_HANDLER(previewstatechange)
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IMPL_EVENT_HANDLER(focus)
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IMPL_EVENT_HANDLER(picture)
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IMPL_EVENT_HANDLER(configurationchange)
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protected:
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virtual ~nsDOMCameraControl();
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class DOMCameraConfiguration final : public dom::CameraConfiguration
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{
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public:
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NS_INLINE_DECL_REFCOUNTING(DOMCameraConfiguration)
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DOMCameraConfiguration();
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explicit DOMCameraConfiguration(const dom::CameraConfiguration& aConfiguration);
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// Additional configuration options that aren't exposed to the DOM
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uint32_t mMaxFocusAreas;
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uint32_t mMaxMeteringAreas;
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private:
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// Private destructor, to discourage deletion outside of Release():
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~DOMCameraConfiguration();
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};
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friend class DOMCameraControlListener;
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friend class mozilla::StartRecordingHelper;
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void OnCreatedFileDescriptor(bool aSucceeded);
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void OnAutoFocusComplete(bool aAutoFocusSucceeded);
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void OnAutoFocusMoving(bool aIsMoving);
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void OnTakePictureComplete(nsIDOMBlob* aPicture);
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void OnFacesDetected(const nsTArray<ICameraControl::Face>& aFaces);
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void OnGetCameraComplete();
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void OnHardwareStateChange(DOMCameraControlListener::HardwareState aState, nsresult aReason);
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void OnPreviewStateChange(DOMCameraControlListener::PreviewState aState);
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void OnRecorderStateChange(CameraControlListener::RecorderState aState, int32_t aStatus, int32_t aTrackNum);
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void OnConfigurationChange(DOMCameraConfiguration* aConfiguration);
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void OnShutter();
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void OnUserError(CameraControlListener::UserContext aContext, nsresult aError);
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bool IsWindowStillActive();
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nsresult SelectPreviewSize(const dom::CameraSize& aRequestedPreviewSize, ICameraControl::Size& aSelectedPreviewSize);
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nsresult NotifyRecordingStatusChange(const nsString& aMsg);
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already_AddRefed<dom::Promise> CreatePromise(ErrorResult& aRv);
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void AbortPromise(nsRefPtr<dom::Promise>& aPromise);
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virtual void EventListenerAdded(nsIAtom* aType) override;
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void DispatchPreviewStateEvent(DOMCameraControlListener::PreviewState aState);
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void DispatchStateEvent(const nsString& aType, const nsString& aState);
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nsRefPtr<ICameraControl> mCameraControl; // non-DOM camera control
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// An agent used to join audio channel service.
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nsCOMPtr<nsIAudioChannelAgent> mAudioChannelAgent;
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nsresult Set(uint32_t aKey, const dom::Optional<dom::Sequence<dom::CameraRegion> >& aValue, uint32_t aLimit);
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nsresult Get(uint32_t aKey, nsTArray<dom::CameraRegion>& aValue);
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nsRefPtr<DOMCameraConfiguration> mCurrentConfiguration;
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nsRefPtr<dom::CameraCapabilities> mCapabilities;
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// camera control pending promises
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nsRefPtr<dom::Promise> mGetCameraPromise;
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nsRefPtr<dom::Promise> mAutoFocusPromise;
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nsRefPtr<dom::Promise> mTakePicturePromise;
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nsRefPtr<dom::Promise> mStartRecordingPromise;
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nsRefPtr<dom::Promise> mReleasePromise;
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nsRefPtr<dom::Promise> mSetConfigurationPromise;
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// Camera event listener; we only need this weak reference so that
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// we can remove the listener from the camera when we're done
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// with it.
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DOMCameraControlListener* mListener;
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// our viewfinder stream
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nsRefPtr<CameraPreviewMediaStream> mInput;
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// set once when this object is created
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nsCOMPtr<nsPIDOMWindow> mWindow;
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dom::CameraStartRecordingOptions mOptions;
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nsRefPtr<DeviceStorageFileDescriptor> mDSFileDescriptor;
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DOMCameraControlListener::PreviewState mPreviewState;
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bool mSetInitialConfig;
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#ifdef MOZ_WIDGET_GONK
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// cached camera control, to improve start-up time
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static StaticRefPtr<ICameraControl> sCachedCameraControl;
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static nsresult sCachedCameraControlStartResult;
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static nsCOMPtr<nsITimer> sDiscardCachedCameraControlTimer;
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#endif
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private:
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nsDOMCameraControl(const nsDOMCameraControl&) = delete;
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nsDOMCameraControl& operator=(const nsDOMCameraControl&) = delete;
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};
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NS_DEFINE_STATIC_IID_ACCESSOR(nsDOMCameraControl, NS_DOM_CAMERA_CONTROL_CID)
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} // namespace mozilla
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#endif // DOM_CAMERA_DOMCAMERACONTROL_H
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