gecko-dev/dom/camera/DOMCameraControl.h

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