| /* |
| * Copyright (C) 2013 Google 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 GOOGLE 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 GOOGLE 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 "modules/peerconnection/RTCDTMFSender.h" |
| |
| #include "bindings/core/v8/ExceptionMessages.h" |
| #include "bindings/core/v8/ExceptionState.h" |
| #include "core/dom/ExceptionCode.h" |
| #include "core/dom/ExecutionContext.h" |
| #include "modules/mediastream/MediaStreamTrack.h" |
| #include "modules/peerconnection/RTCDTMFToneChangeEvent.h" |
| #include "public/platform/WebMediaStreamTrack.h" |
| #include "public/platform/WebRTCDTMFSenderHandler.h" |
| #include "public/platform/WebRTCPeerConnectionHandler.h" |
| #include "wtf/PtrUtil.h" |
| #include <memory> |
| |
| namespace blink { |
| |
| static const int minToneDurationMs = 70; |
| static const int defaultToneDurationMs = 100; |
| static const int maxToneDurationMs = 6000; |
| static const int minInterToneGapMs = 50; |
| static const int defaultInterToneGapMs = 50; |
| |
| RTCDTMFSender* RTCDTMFSender::create(ExecutionContext* context, WebRTCPeerConnectionHandler* peerConnectionHandler, MediaStreamTrack* track, ExceptionState& exceptionState) |
| { |
| std::unique_ptr<WebRTCDTMFSenderHandler> handler = wrapUnique(peerConnectionHandler->createDTMFSender(track->component())); |
| if (!handler) { |
| exceptionState.throwDOMException(NotSupportedError, "The MediaStreamTrack provided is not an element of a MediaStream that's currently in the local streams set."); |
| return nullptr; |
| } |
| |
| RTCDTMFSender* dtmfSender = new RTCDTMFSender(context, track, std::move(handler)); |
| dtmfSender->suspendIfNeeded(); |
| return dtmfSender; |
| } |
| |
| RTCDTMFSender::RTCDTMFSender(ExecutionContext* context, MediaStreamTrack* track, std::unique_ptr<WebRTCDTMFSenderHandler> handler) |
| : ActiveDOMObject(context) |
| , m_track(track) |
| , m_duration(defaultToneDurationMs) |
| , m_interToneGap(defaultInterToneGapMs) |
| , m_handler(std::move(handler)) |
| , m_stopped(false) |
| , m_scheduledEventTimer(this, &RTCDTMFSender::scheduledEventTimerFired) |
| { |
| ThreadState::current()->registerPreFinalizer(this); |
| m_handler->setClient(this); |
| } |
| |
| RTCDTMFSender::~RTCDTMFSender() |
| { |
| } |
| |
| void RTCDTMFSender::dispose() |
| { |
| // Promptly clears a raw reference from content/ to an on-heap object |
| // so that content/ doesn't access it in a lazy sweeping phase. |
| m_handler->setClient(nullptr); |
| m_handler.reset(); |
| } |
| |
| bool RTCDTMFSender::canInsertDTMF() const |
| { |
| return m_handler->canInsertDTMF(); |
| } |
| |
| MediaStreamTrack* RTCDTMFSender::track() const |
| { |
| return m_track.get(); |
| } |
| |
| String RTCDTMFSender::toneBuffer() const |
| { |
| return m_handler->currentToneBuffer(); |
| } |
| |
| void RTCDTMFSender::insertDTMF(const String& tones, ExceptionState& exceptionState) |
| { |
| insertDTMF(tones, defaultToneDurationMs, defaultInterToneGapMs, exceptionState); |
| } |
| |
| void RTCDTMFSender::insertDTMF(const String& tones, int duration, ExceptionState& exceptionState) |
| { |
| insertDTMF(tones, duration, defaultInterToneGapMs, exceptionState); |
| } |
| |
| void RTCDTMFSender::insertDTMF(const String& tones, int duration, int interToneGap, ExceptionState& exceptionState) |
| { |
| if (!canInsertDTMF()) { |
| exceptionState.throwDOMException(NotSupportedError, "The 'canInsertDTMF' attribute is false: this sender cannot send DTMF."); |
| return; |
| } |
| |
| if (duration > maxToneDurationMs || duration < minToneDurationMs) { |
| exceptionState.throwDOMException(SyntaxError, ExceptionMessages::indexOutsideRange("duration", duration, minToneDurationMs, ExceptionMessages::ExclusiveBound, maxToneDurationMs, ExceptionMessages::ExclusiveBound)); |
| return; |
| } |
| |
| if (interToneGap < minInterToneGapMs) { |
| exceptionState.throwDOMException(SyntaxError, ExceptionMessages::indexExceedsMinimumBound("intertone gap", interToneGap, minInterToneGapMs)); |
| return; |
| } |
| |
| m_duration = duration; |
| m_interToneGap = interToneGap; |
| |
| if (!m_handler->insertDTMF(tones, m_duration, m_interToneGap)) |
| exceptionState.throwDOMException(SyntaxError, "Could not send provided tones, '" + tones + "'."); |
| } |
| |
| void RTCDTMFSender::didPlayTone(const WebString& tone) |
| { |
| scheduleDispatchEvent(RTCDTMFToneChangeEvent::create(tone)); |
| } |
| |
| const AtomicString& RTCDTMFSender::interfaceName() const |
| { |
| return EventTargetNames::RTCDTMFSender; |
| } |
| |
| ExecutionContext* RTCDTMFSender::getExecutionContext() const |
| { |
| return ActiveDOMObject::getExecutionContext(); |
| } |
| |
| void RTCDTMFSender::stop() |
| { |
| m_stopped = true; |
| m_handler->setClient(nullptr); |
| } |
| |
| void RTCDTMFSender::scheduleDispatchEvent(Event* event) |
| { |
| m_scheduledEvents.append(event); |
| |
| if (!m_scheduledEventTimer.isActive()) |
| m_scheduledEventTimer.startOneShot(0, BLINK_FROM_HERE); |
| } |
| |
| void RTCDTMFSender::scheduledEventTimerFired(TimerBase*) |
| { |
| if (m_stopped) |
| return; |
| |
| HeapVector<Member<Event>> events; |
| events.swap(m_scheduledEvents); |
| |
| HeapVector<Member<Event>>::iterator it = events.begin(); |
| for (; it != events.end(); ++it) |
| dispatchEvent((*it).release()); |
| } |
| |
| DEFINE_TRACE(RTCDTMFSender) |
| { |
| visitor->trace(m_track); |
| visitor->trace(m_scheduledEvents); |
| EventTargetWithInlineData::trace(visitor); |
| ActiveDOMObject::trace(visitor); |
| } |
| |
| } // namespace blink |