1/*
2 * Copyright (C) 2013 Google Inc. All rights reserved.
3 *
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions
6 * are met:
7 * 1. Redistributions of source code must retain the above copyright
8 * notice, this list of conditions and the following disclaimer.
9 * 2. Redistributions in binary form must reproduce the above copyright
10 * notice, this list of conditions and the following disclaimer in the
11 * documentation and/or other materials provided with the distribution.
12 *
13 * THIS SOFTWARE IS PROVIDED BY GOOGLE INC. ``AS IS'' AND ANY
14 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
15 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
16 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL GOOGLE INC. OR
17 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
18 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
19 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
20 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
21 * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
22 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
23 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
24 */
25
26#include "config.h"
27#include "RTCDTMFSender.h"
28
29#if ENABLE(WEB_RTC_DTMF)
30
31#include "MediaStreamTrack.h"
32#include "RTCDTMFSenderHandler.h"
33#include "RTCDTMFToneChangeEvent.h"
34#include "ScriptExecutionContext.h"
35#include <wtf/IsoMallocInlines.h>
36
37namespace WebCore {
38
39WTF_MAKE_ISO_ALLOCATED_IMPL(RTCDTMFSender);
40
41static const long minToneDurationMs = 40;
42static const long defaultToneDurationMs = 100;
43static const long maxToneDurationMs = 6000;
44static const long minInterToneGapMs = 30;
45static const long defaultInterToneGapMs = 70;
46
47RTCDTMFSender::RTCDTMFSender(ScriptExecutionContext& context, RefPtr<MediaStreamTrack>&& track)
48 : ActiveDOMObject(&context)
49 , m_track(WTFMove(track))
50 , m_duration(defaultToneDurationMs)
51 , m_interToneGap(defaultInterToneGapMs)
52 , m_stopped(false)
53 , m_scheduledEventTimer(*this, &RTCDTMFSender::scheduledEventTimerFired)
54{
55}
56
57RTCDTMFSender::~RTCDTMFSender() = default;
58
59bool RTCDTMFSender::canInsertDTMF() const
60{
61 return false;
62}
63
64MediaStreamTrack* RTCDTMFSender::track() const
65{
66 return m_track.get();
67}
68
69String RTCDTMFSender::toneBuffer() const
70{
71 return { };
72}
73
74ExceptionOr<void> RTCDTMFSender::insertDTMF(const String&, Optional<int> duration, Optional<int> interToneGap)
75{
76 if (!canInsertDTMF())
77 return Exception { NotSupportedError };
78
79 if (duration && (duration.value() > maxToneDurationMs || duration.value() < minToneDurationMs))
80 return Exception { SyntaxError };
81
82 if (interToneGap && interToneGap.value() < minInterToneGapMs)
83 return Exception { SyntaxError };
84
85 m_duration = duration.valueOr(defaultToneDurationMs);
86 m_interToneGap = interToneGap.valueOr(defaultInterToneGapMs);
87
88 return Exception { SyntaxError };
89}
90
91void RTCDTMFSender::didPlayTone(const String& tone)
92{
93 scheduleDispatchEvent(RTCDTMFToneChangeEvent::create(tone));
94}
95
96void RTCDTMFSender::stop()
97{
98 m_stopped = true;
99}
100
101const char* RTCDTMFSender::activeDOMObjectName() const
102{
103 return "RTCDTMFSender";
104}
105
106bool RTCDTMFSender::canSuspendForDocumentSuspension() const
107{
108 // FIXME: We should try and do better here.
109 return false;
110}
111
112void RTCDTMFSender::scheduleDispatchEvent(Ref<Event>&& event)
113{
114 m_scheduledEvents.append(WTFMove(event));
115
116 if (!m_scheduledEventTimer.isActive())
117 m_scheduledEventTimer.startOneShot(0_s);
118}
119
120void RTCDTMFSender::scheduledEventTimerFired()
121{
122 if (m_stopped)
123 return;
124
125 Vector<Ref<Event>> events;
126 events.swap(m_scheduledEvents);
127
128 for (auto& event : events)
129 dispatchEvent(event);
130}
131
132} // namespace WebCore
133
134#endif // ENABLE(WEB_RTC)
135