| /* |
| * Copyright (C) 2015-2016 Apple Inc. All rights reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions |
| * are met: |
| * 1. Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * 2. Redistributions in binary form must reproduce the above copyright |
| * notice, this list of conditions and the following disclaimer in the |
| * documentation and/or other materials provided with the distribution. |
| * |
| * THIS SOFTWARE IS PROVIDED BY APPLE, INC. ``AS IS'' AND ANY |
| * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR |
| * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR |
| * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, |
| * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, |
| * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR |
| * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY |
| * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
| * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| * |
| */ |
| |
| #include "config.h" |
| #include "MediaDevicesRequest.h" |
| |
| #if ENABLE(MEDIA_STREAM) |
| |
| #include "CaptureDevice.h" |
| #include "Document.h" |
| #include "Frame.h" |
| #include "JSMediaDeviceInfo.h" |
| #include "MediaDevicesEnumerationRequest.h" |
| #include "RealtimeMediaSourceCenter.h" |
| #include "SecurityOrigin.h" |
| #include "UserMediaController.h" |
| #include <wtf/MainThread.h> |
| #include <wtf/SHA1.h> |
| |
| namespace WebCore { |
| |
| inline MediaDevicesRequest::MediaDevicesRequest(Document& document, MediaDevices::EnumerateDevicesPromise&& promise) |
| : ContextDestructionObserver(&document) |
| , m_promise(WTFMove(promise)) |
| { |
| } |
| |
| Ref<MediaDevicesRequest> MediaDevicesRequest::create(Document& document, MediaDevices::EnumerateDevicesPromise&& promise) |
| { |
| return adoptRef(*new MediaDevicesRequest(document, WTFMove(promise))); |
| } |
| |
| MediaDevicesRequest::~MediaDevicesRequest() |
| { |
| // This should only get destroyed after the enumeration request has completed or has been canceled. |
| ASSERT(!m_enumerationRequest || m_enumerationRequest->wasCanceled()); |
| } |
| |
| SecurityOrigin* MediaDevicesRequest::securityOrigin() const |
| { |
| if (scriptExecutionContext()) |
| return scriptExecutionContext()->securityOrigin(); |
| |
| return nullptr; |
| } |
| |
| void MediaDevicesRequest::contextDestroyed() |
| { |
| // The call to m_enumerationRequest->cancel() might delete this. |
| auto protectedThis = makeRef(*this); |
| |
| if (m_enumerationRequest) { |
| m_enumerationRequest->cancel(); |
| m_enumerationRequest = nullptr; |
| } |
| ContextDestructionObserver::contextDestroyed(); |
| } |
| |
| void MediaDevicesRequest::start() |
| { |
| auto& document = downcast<Document>(*scriptExecutionContext()); |
| auto* controller = UserMediaController::from(document.page()); |
| if (!controller) { |
| callOnMainThread([protectedThis = makeRef(*this)]() { |
| protectedThis->m_promise.resolve({ }); |
| }); |
| |
| return; |
| } |
| |
| auto microphoneAccess = controller->canCallGetUserMedia(document, { UserMediaController::CaptureType::Microphone }); |
| auto cameraAccess = controller->canCallGetUserMedia(document, { UserMediaController::CaptureType::Camera }); |
| bool canAccessMicrophone = microphoneAccess == UserMediaController::GetUserMediaAccess::CanCall; |
| bool canAccessCamera = cameraAccess == UserMediaController::GetUserMediaAccess::CanCall; |
| if (!canAccessMicrophone && !canAccessCamera) { |
| controller->logGetUserMediaDenial(document, !canAccessMicrophone ? microphoneAccess : cameraAccess, UserMediaController::BlockedCaller::EnumerateDevices); |
| callOnMainThread([protectedThis = makeRef(*this)]() { |
| protectedThis->m_promise.resolve({ }); |
| }); |
| |
| return; |
| } |
| |
| // This lambda keeps |this| alive until the request completes or is canceled. |
| auto completion = [this, protectedThis = makeRef(*this), canAccessMicrophone, canAccessCamera] (const Vector<CaptureDevice>& captureDevices, const String& deviceIdentifierHashSalt, bool) mutable { |
| |
| m_enumerationRequest = nullptr; |
| |
| if (!scriptExecutionContext()) |
| return; |
| |
| auto& document = downcast<Document>(*scriptExecutionContext()); |
| document.setDeviceIDHashSalt(deviceIdentifierHashSalt); |
| |
| Vector<Ref<MediaDeviceInfo>> devices; |
| for (auto& deviceInfo : captureDevices) { |
| if (!canAccessMicrophone && deviceInfo.type() == CaptureDevice::DeviceType::Microphone) |
| continue; |
| if (!canAccessCamera && deviceInfo.type() == CaptureDevice::DeviceType::Camera) |
| continue; |
| |
| auto deviceType = deviceInfo.type() == CaptureDevice::DeviceType::Microphone ? MediaDeviceInfo::Kind::Audioinput : MediaDeviceInfo::Kind::Videoinput; |
| devices.append(MediaDeviceInfo::create(scriptExecutionContext(), deviceInfo.label(), deviceInfo.persistentId(), deviceInfo.groupId(), deviceType)); |
| } |
| |
| callOnMainThread([protectedThis = makeRef(*this), devices = WTFMove(devices)]() mutable { |
| protectedThis->m_promise.resolve(devices); |
| }); |
| }; |
| |
| m_enumerationRequest = MediaDevicesEnumerationRequest::create(document, WTFMove(completion)); |
| m_enumerationRequest->start(); |
| } |
| |
| } // namespace WebCore |
| |
| #endif // ENABLE(MEDIA_STREAM) |