зеркало из https://github.com/mozilla/gecko-dev.git
109 строки
3.2 KiB
C++
109 строки
3.2 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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#include "nsDebug.h"
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#include "nsIDocument.h"
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#include "nsIPermissionManager.h"
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#include "DOMCameraControl.h"
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#include "DOMCameraManager.h"
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#include "nsDOMClassInfo.h"
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#include "DictionaryHelpers.h"
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#include "CameraCommon.h"
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using namespace mozilla;
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DOMCI_DATA(CameraManager, nsIDOMCameraManager)
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NS_INTERFACE_MAP_BEGIN(nsDOMCameraManager)
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NS_INTERFACE_MAP_ENTRY(nsISupports)
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NS_INTERFACE_MAP_ENTRY(nsIDOMCameraManager)
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NS_DOM_INTERFACE_MAP_ENTRY_CLASSINFO(CameraManager)
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NS_INTERFACE_MAP_END
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NS_IMPL_ADDREF(nsDOMCameraManager)
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NS_IMPL_RELEASE(nsDOMCameraManager)
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/**
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* Global camera logging object
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*
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* Set the NSPR_LOG_MODULES environment variable to enable logging
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* in a debug build, e.g. NSPR_LOG_MODULES=Camera:5
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*/
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PRLogModuleInfo* gCameraLog = PR_LOG_DEFINE("Camera");
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/**
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* nsDOMCameraManager::GetListOfCameras
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* is implementation-specific, and can be found in (e.g.)
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* GonkCameraManager.cpp and FallbackCameraManager.cpp.
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*/
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nsDOMCameraManager::nsDOMCameraManager(uint64_t aWindowId)
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: mWindowId(aWindowId)
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{
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/* member initializers and constructor code */
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DOM_CAMERA_LOGT("%s:%d : this=%p, windowId=%llx\n", __func__, __LINE__, this, mWindowId);
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}
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nsDOMCameraManager::~nsDOMCameraManager()
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{
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/* destructor code */
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DOM_CAMERA_LOGT("%s:%d : this=%p\n", __func__, __LINE__, this);
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}
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void
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nsDOMCameraManager::OnNavigation(uint64_t aWindowId)
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{
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// TODO: see bug 779145.
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}
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// static creator
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already_AddRefed<nsDOMCameraManager>
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nsDOMCameraManager::CheckPermissionAndCreateInstance(nsPIDOMWindow* aWindow)
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{
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nsCOMPtr<nsIPermissionManager> permMgr =
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do_GetService(NS_PERMISSIONMANAGER_CONTRACTID);
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NS_ENSURE_TRUE(permMgr, nullptr);
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uint32_t permission = nsIPermissionManager::DENY_ACTION;
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permMgr->TestPermissionFromWindow(aWindow, "camera", &permission);
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if (permission != nsIPermissionManager::ALLOW_ACTION) {
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NS_WARNING("No permission to access camera");
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return nullptr;
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}
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nsRefPtr<nsDOMCameraManager> cameraManager =
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new nsDOMCameraManager(aWindow->WindowID());
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return cameraManager.forget();
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}
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/* [implicit_jscontext] void getCamera ([optional] in jsval aOptions, in nsICameraGetCameraCallback onSuccess, [optional] in nsICameraErrorCallback onError); */
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NS_IMETHODIMP
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nsDOMCameraManager::GetCamera(const JS::Value& aOptions, nsICameraGetCameraCallback* onSuccess, nsICameraErrorCallback* onError, JSContext* cx)
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{
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NS_ENSURE_TRUE(onSuccess, NS_ERROR_INVALID_ARG);
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uint32_t cameraId = 0; // back (or forward-facing) camera by default
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CameraSelector selector;
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nsresult rv = selector.Init(cx, &aOptions);
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NS_ENSURE_SUCCESS(rv, rv);
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if (selector.camera.EqualsASCII("front")) {
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cameraId = 1;
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}
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// reuse the same camera thread to conserve resources
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if (!mCameraThread) {
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rv = NS_NewThread(getter_AddRefs(mCameraThread));
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NS_ENSURE_SUCCESS(rv, rv);
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}
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DOM_CAMERA_LOGT("%s:%d\n", __func__, __LINE__);
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// Creating this object will trigger the onSuccess handler
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nsCOMPtr<nsICameraControl> cameraControl = new nsDOMCameraControl(cameraId, mCameraThread, onSuccess, onError);
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return NS_OK;
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}
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