| /* |
| * Copyright (C) 2015 Ericsson AB. All rights reserved. |
| * Copyright (C) 2015-2018 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. |
| * 3. Neither the name of Ericsson nor the names of its contributors |
| * may be used to endorse or promote products derived from this |
| * software without specific prior written permission. |
| * |
| * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
| * "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 THE COPYRIGHT |
| * OWNER 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 "MediaDevices.h" |
| |
| #if ENABLE(MEDIA_STREAM) |
| |
| #include "Document.h" |
| #include "Event.h" |
| #include "EventNames.h" |
| #include "MediaDevicesRequest.h" |
| #include "MediaTrackSupportedConstraints.h" |
| #include "RealtimeMediaSourceSettings.h" |
| #include "RuntimeEnabledFeatures.h" |
| #include "UserMediaController.h" |
| #include "UserMediaRequest.h" |
| #include <wtf/IsoMallocInlines.h> |
| #include <wtf/RandomNumber.h> |
| |
| namespace WebCore { |
| |
| WTF_MAKE_ISO_ALLOCATED_IMPL(MediaDevices); |
| |
| inline MediaDevices::MediaDevices(Document& document) |
| : ActiveDOMObject(document) |
| , m_scheduledEventTimer(*this, &MediaDevices::scheduledEventTimerFired) |
| , m_eventNames(eventNames()) |
| { |
| suspendIfNeeded(); |
| |
| static_assert(static_cast<size_t>(MediaDevices::DisplayCaptureSurfaceType::Monitor) == static_cast<size_t>(RealtimeMediaSourceSettings::DisplaySurfaceType::Monitor), "MediaDevices::DisplayCaptureSurfaceType::Monitor is not equal to RealtimeMediaSourceSettings::DisplaySurfaceType::Monitor as expected"); |
| static_assert(static_cast<size_t>(MediaDevices::DisplayCaptureSurfaceType::Window) == static_cast<size_t>(RealtimeMediaSourceSettings::DisplaySurfaceType::Window), "MediaDevices::DisplayCaptureSurfaceType::Window is not RealtimeMediaSourceSettings::DisplaySurfaceType::Window as expected"); |
| static_assert(static_cast<size_t>(MediaDevices::DisplayCaptureSurfaceType::Application) == static_cast<size_t>(RealtimeMediaSourceSettings::DisplaySurfaceType::Application), "MediaDevices::DisplayCaptureSurfaceType::Application is not RealtimeMediaSourceSettings::DisplaySurfaceType::Application as expected"); |
| static_assert(static_cast<size_t>(MediaDevices::DisplayCaptureSurfaceType::Browser) == static_cast<size_t>(RealtimeMediaSourceSettings::DisplaySurfaceType::Browser), "MediaDevices::DisplayCaptureSurfaceType::Browser is not RealtimeMediaSourceSettings::DisplaySurfaceType::Browser as expected"); |
| } |
| |
| MediaDevices::~MediaDevices() = default; |
| |
| void MediaDevices::stop() |
| { |
| if (m_deviceChangeToken) { |
| auto* document = this->document(); |
| auto* controller = document ? UserMediaController::from(document->page()) : nullptr; |
| if (document && controller) |
| controller->removeDeviceChangeObserver(m_deviceChangeToken); |
| } |
| } |
| |
| Ref<MediaDevices> MediaDevices::create(Document& document) |
| { |
| return adoptRef(*new MediaDevices(document)); |
| } |
| |
| Document* MediaDevices::document() const |
| { |
| return downcast<Document>(scriptExecutionContext()); |
| } |
| |
| static MediaConstraints createMediaConstraints(const Variant<bool, MediaTrackConstraints>& constraints) |
| { |
| return WTF::switchOn(constraints, |
| [&] (bool isValid) { |
| MediaConstraints constraints; |
| constraints.isValid = isValid; |
| return constraints; |
| }, |
| [&] (const MediaTrackConstraints& trackConstraints) { |
| return createMediaConstraints(trackConstraints); |
| } |
| ); |
| } |
| |
| void MediaDevices::getUserMedia(const StreamConstraints& constraints, Promise&& promise) const |
| { |
| auto* document = this->document(); |
| if (!document) |
| return; |
| |
| auto audioConstraints = createMediaConstraints(constraints.audio); |
| auto videoConstraints = createMediaConstraints(constraints.video); |
| if (videoConstraints.isValid) |
| videoConstraints.setDefaultVideoConstraints(); |
| |
| auto request = UserMediaRequest::create(*document, { MediaStreamRequest::Type::UserMedia, WTFMove(audioConstraints), WTFMove(videoConstraints) }, WTFMove(promise)); |
| request->start(); |
| } |
| |
| void MediaDevices::getDisplayMedia(const StreamConstraints& constraints, Promise&& promise) const |
| { |
| auto* document = this->document(); |
| if (!document) |
| return; |
| |
| if (!m_disableGetDisplayMediaUserGestureConstraint && !UserGestureIndicator::processingUserGesture()) { |
| promise.reject(Exception { InvalidAccessError, "getDisplayMedia must be called from a user gesture handler."_s }); |
| return; |
| } |
| |
| auto request = UserMediaRequest::create(*document, { MediaStreamRequest::Type::DisplayMedia, { }, createMediaConstraints(constraints.video) }, WTFMove(promise)); |
| request->start(); |
| } |
| |
| void MediaDevices::enumerateDevices(EnumerateDevicesPromise&& promise) const |
| { |
| auto* document = this->document(); |
| if (!document) |
| return; |
| MediaDevicesRequest::create(*document, WTFMove(promise))->start(); |
| } |
| |
| MediaTrackSupportedConstraints MediaDevices::getSupportedConstraints() |
| { |
| auto& supported = RealtimeMediaSourceCenter::singleton().supportedConstraints(); |
| MediaTrackSupportedConstraints result; |
| result.width = supported.supportsWidth(); |
| result.height = supported.supportsHeight(); |
| result.aspectRatio = supported.supportsAspectRatio(); |
| result.frameRate = supported.supportsFrameRate(); |
| result.facingMode = supported.supportsFacingMode(); |
| result.volume = supported.supportsVolume(); |
| result.sampleRate = supported.supportsSampleRate(); |
| result.sampleSize = supported.supportsSampleSize(); |
| result.echoCancellation = supported.supportsEchoCancellation(); |
| result.deviceId = supported.supportsDeviceId(); |
| result.groupId = supported.supportsGroupId(); |
| |
| return result; |
| } |
| |
| void MediaDevices::scheduledEventTimerFired() |
| { |
| if (scriptExecutionContext()) |
| dispatchEvent(Event::create(eventNames().devicechangeEvent, Event::CanBubble::No, Event::IsCancelable::No)); |
| } |
| |
| bool MediaDevices::hasPendingActivity() const |
| { |
| return !isContextStopped() && hasEventListeners(m_eventNames.devicechangeEvent); |
| } |
| |
| const char* MediaDevices::activeDOMObjectName() const |
| { |
| return "MediaDevices"; |
| } |
| |
| bool MediaDevices::canSuspendForDocumentSuspension() const |
| { |
| return true; |
| } |
| |
| bool MediaDevices::addEventListener(const AtomicString& eventType, Ref<EventListener>&& listener, const AddEventListenerOptions& options) |
| { |
| if (!m_listeningForDeviceChanges && eventType == eventNames().devicechangeEvent) { |
| auto* document = this->document(); |
| auto* controller = document ? UserMediaController::from(document->page()) : nullptr; |
| if (document && controller) { |
| m_listeningForDeviceChanges = true; |
| |
| m_deviceChangeToken = controller->addDeviceChangeObserver([weakThis = makeWeakPtr(*this), this]() { |
| |
| if (!weakThis || m_scheduledEventTimer.isActive()) |
| return; |
| |
| auto* document = this->document(); |
| auto* controller = document ? UserMediaController::from(document->page()) : nullptr; |
| if (!controller) |
| return; |
| |
| bool canAccessMicrophone = controller->canCallGetUserMedia(*document, { UserMediaController::CaptureType::Microphone }) == UserMediaController::GetUserMediaAccess::CanCall; |
| bool canAccessCamera = controller->canCallGetUserMedia(*document, { UserMediaController::CaptureType::Camera }) == UserMediaController::GetUserMediaAccess::CanCall; |
| if (!canAccessMicrophone && !canAccessCamera) |
| return; |
| |
| m_scheduledEventTimer.startOneShot(Seconds(randomNumber() / 2)); |
| }); |
| } |
| } |
| |
| return EventTargetWithInlineData::addEventListener(eventType, WTFMove(listener), options); |
| } |
| |
| } // namespace WebCore |
| |
| #endif // ENABLE(MEDIA_STREAM) |