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/*
* 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