gecko-dev/dom/camera/DOMCameraManager.h

113 строки
3.4 KiB
C++

/* -*- Mode: c++; c-basic-offset: 2; indent-tabs-mode: nil; tab-width: 40 -*- */
/* vim: set ts=2 et sw=2 tw=40: */
/* 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_DOMCAMERAMANAGER_H
#define DOM_CAMERA_DOMCAMERAMANAGER_H
#include "mozilla/dom/BindingDeclarations.h"
#include "nsCOMPtr.h"
#include "nsAutoPtr.h"
#include "nsIThread.h"
#include "nsIObserver.h"
#include "nsThreadUtils.h"
#include "nsHashKeys.h"
#include "nsWrapperCache.h"
#include "nsWeakReference.h"
#include "nsClassHashtable.h"
#include "nsIDOMCameraManager.h"
#include "nsCycleCollectionParticipant.h"
#include "mozilla/Attributes.h"
class nsPIDOMWindow;
namespace mozilla {
class ErrorResult;
class nsDOMCameraControl;
namespace dom {
class CameraSelector;
}
}
typedef nsTArray<nsRefPtr<mozilla::nsDOMCameraControl> > CameraControls;
typedef nsClassHashtable<nsUint64HashKey, CameraControls> WindowTable;
class nsDOMCameraManager MOZ_FINAL
: public nsIObserver
, public nsSupportsWeakReference
, public nsWrapperCache
{
public:
NS_DECL_CYCLE_COLLECTING_ISUPPORTS
NS_DECL_CYCLE_COLLECTION_SCRIPT_HOLDER_CLASS_AMBIGUOUS(nsDOMCameraManager,
nsIObserver)
NS_DECL_NSIOBSERVER
static bool CheckPermission(nsPIDOMWindow* aWindow);
static already_AddRefed<nsDOMCameraManager>
CreateInstance(nsPIDOMWindow* aWindow);
static bool IsWindowStillActive(uint64_t aWindowId);
void Register(mozilla::nsDOMCameraControl* aDOMCameraControl);
void OnNavigation(uint64_t aWindowId);
nsresult GetNumberOfCameras(int32_t& aDeviceCount);
nsresult GetCameraName(uint32_t aDeviceNum, nsCString& aDeviceName);
// WebIDL
void GetCamera(const mozilla::dom::CameraSelector& aOptions,
nsICameraGetCameraCallback* aCallback,
const mozilla::dom::Optional<nsICameraErrorCallback*>& ErrorCallback,
mozilla::ErrorResult& aRv);
void GetListOfCameras(nsTArray<nsString>& aList, mozilla::ErrorResult& aRv);
nsPIDOMWindow* GetParentObject() const { return mWindow; }
virtual JSObject* WrapObject(JSContext* aCx, JS::Handle<JSObject*> aScope)
MOZ_OVERRIDE;
protected:
void XpComShutdown();
void Shutdown(uint64_t aWindowId);
~nsDOMCameraManager();
private:
nsDOMCameraManager() MOZ_DELETE;
nsDOMCameraManager(nsPIDOMWindow* aWindow);
nsDOMCameraManager(const nsDOMCameraManager&) MOZ_DELETE;
nsDOMCameraManager& operator=(const nsDOMCameraManager&) MOZ_DELETE;
protected:
uint64_t mWindowId;
nsCOMPtr<nsIThread> mCameraThread;
nsCOMPtr<nsPIDOMWindow> mWindow;
/**
* 'mActiveWindows' is only ever accessed while in the main thread,
* so it is not otherwise protected.
*/
static WindowTable sActiveWindows;
static bool sActiveWindowsInitialized;
};
class GetCameraTask : public nsRunnable
{
public:
GetCameraTask(uint32_t aCameraId, nsICameraGetCameraCallback* onSuccess, nsICameraErrorCallback* onError, nsIThread* aCameraThread)
: mCameraId(aCameraId)
, mOnSuccessCb(onSuccess)
, mOnErrorCb(onError)
, mCameraThread(aCameraThread)
{ }
NS_IMETHOD Run() MOZ_OVERRIDE;
protected:
uint32_t mCameraId;
nsCOMPtr<nsICameraGetCameraCallback> mOnSuccessCb;
nsCOMPtr<nsICameraErrorCallback> mOnErrorCb;
nsCOMPtr<nsIThread> mCameraThread;
};
#endif // DOM_CAMERA_DOMCAMERAMANAGER_H