зеркало из https://github.com/mozilla/gecko-dev.git
98 строки
2.6 KiB
C++
98 строки
2.6 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 "mozilla/dom/MediaDevices.h"
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#include "mozilla/dom/MediaStreamBinding.h"
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#include "mozilla/dom/MediaDevicesBinding.h"
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#include "mozilla/dom/Promise.h"
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#include "mozilla/MediaManager.h"
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#include "nsIEventTarget.h"
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#include "nsIScriptGlobalObject.h"
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#include "nsPIDOMWindow.h"
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namespace mozilla {
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namespace dom {
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class MediaDevices::GumResolver : public nsIDOMGetUserMediaSuccessCallback
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{
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public:
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NS_DECL_ISUPPORTS
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explicit GumResolver(Promise* aPromise) : mPromise(aPromise) {}
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NS_IMETHOD
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OnSuccess(nsISupports* aStream) MOZ_OVERRIDE
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{
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nsRefPtr<DOMLocalMediaStream> stream = do_QueryObject(aStream);
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if (!stream) {
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return NS_ERROR_FAILURE;
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}
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mPromise->MaybeResolve(stream);
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return NS_OK;
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}
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private:
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virtual ~GumResolver() {}
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nsRefPtr<Promise> mPromise;
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};
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class MediaDevices::GumRejecter : public nsIDOMGetUserMediaErrorCallback
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{
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public:
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NS_DECL_ISUPPORTS
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explicit GumRejecter(Promise* aPromise) : mPromise(aPromise) {}
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NS_IMETHOD
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OnError(nsISupports* aError) MOZ_OVERRIDE
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{
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nsRefPtr<MediaStreamError> error = do_QueryObject(aError);
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if (!error) {
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return NS_ERROR_FAILURE;
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}
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mPromise->MaybeReject(error);
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return NS_OK;
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}
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private:
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virtual ~GumRejecter() {}
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nsRefPtr<Promise> mPromise;
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};
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NS_IMPL_ISUPPORTS(MediaDevices::GumResolver, nsIDOMGetUserMediaSuccessCallback)
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NS_IMPL_ISUPPORTS(MediaDevices::GumRejecter, nsIDOMGetUserMediaErrorCallback)
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already_AddRefed<Promise>
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MediaDevices::GetUserMedia(const MediaStreamConstraints& aConstraints,
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ErrorResult &aRv)
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{
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ErrorResult rv;
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nsPIDOMWindow* window = GetOwner();
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nsCOMPtr<nsIGlobalObject> go = do_QueryInterface(window);
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nsRefPtr<Promise> p = Promise::Create(go, aRv);
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NS_ENSURE_TRUE(!rv.Failed(), nullptr);
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nsRefPtr<GumResolver> resolver = new GumResolver(p);
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nsRefPtr<GumRejecter> rejecter = new GumRejecter(p);
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aRv = MediaManager::Get()->GetUserMedia(window, aConstraints,
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resolver, rejecter);
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return p.forget();
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}
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NS_IMPL_ADDREF_INHERITED(MediaDevices, DOMEventTargetHelper)
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NS_IMPL_RELEASE_INHERITED(MediaDevices, DOMEventTargetHelper)
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NS_INTERFACE_MAP_BEGIN(MediaDevices)
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NS_INTERFACE_MAP_ENTRY(MediaDevices)
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NS_INTERFACE_MAP_END_INHERITING(DOMEventTargetHelper)
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JSObject*
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MediaDevices::WrapObject(JSContext* aCx)
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{
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return MediaDevicesBinding::Wrap(aCx, this);
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}
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} // namespace dom
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} // namespace mozilla
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