1 | /* |
2 | * Copyright (C) 2013 Nokia Corporation and/or its subsidiary(-ies). |
3 | * Copyright (C) 2015 Ericsson AB. All rights reserved. |
4 | * Copyright (C) 2013-2019 Apple Inc. All rights reserved. |
5 | * |
6 | * Redistribution and use in source and binary forms, with or without |
7 | * modification, are permitted provided that the following conditions |
8 | * are met: |
9 | * 1. Redistributions of source code must retain the above copyright |
10 | * notice, this list of conditions and the following disclaimer. |
11 | * 2. Redistributions in binary form must reproduce the above copyright |
12 | * notice, this list of conditions and the following disclaimer in the |
13 | * documentation and/or other materials provided with the distribution. |
14 | * |
15 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
16 | * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
17 | * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
18 | * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
19 | * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
20 | * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
21 | * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
22 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
23 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
24 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
25 | * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
26 | */ |
27 | |
28 | #pragma once |
29 | |
30 | #if ENABLE(MEDIA_STREAM) |
31 | |
32 | #include "RealtimeMediaSource.h" |
33 | #include <wtf/LoggerHelper.h> |
34 | |
35 | namespace WebCore { |
36 | |
37 | class AudioSourceProvider; |
38 | class GraphicsContext; |
39 | class MediaSample; |
40 | class RealtimeMediaSourceCapabilities; |
41 | class WebAudioSourceProvider; |
42 | |
43 | class MediaStreamTrackPrivate final |
44 | : public RefCounted<MediaStreamTrackPrivate> |
45 | , public RealtimeMediaSource::Observer |
46 | #if !RELEASE_LOG_DISABLED |
47 | , private LoggerHelper |
48 | #endif |
49 | { |
50 | public: |
51 | class Observer { |
52 | public: |
53 | virtual ~Observer() = default; |
54 | |
55 | virtual void trackStarted(MediaStreamTrackPrivate&) { }; |
56 | virtual void trackEnded(MediaStreamTrackPrivate&) = 0; |
57 | virtual void trackMutedChanged(MediaStreamTrackPrivate&) = 0; |
58 | virtual void trackSettingsChanged(MediaStreamTrackPrivate&) = 0; |
59 | virtual void trackEnabledChanged(MediaStreamTrackPrivate&) = 0; |
60 | virtual void sampleBufferUpdated(MediaStreamTrackPrivate&, MediaSample&) { }; |
61 | virtual void readyStateChanged(MediaStreamTrackPrivate&) { }; |
62 | |
63 | // May get called on a background thread. |
64 | virtual void audioSamplesAvailable(MediaStreamTrackPrivate&, const MediaTime&, const PlatformAudioData&, const AudioStreamDescription&, size_t) { }; |
65 | }; |
66 | |
67 | static Ref<MediaStreamTrackPrivate> create(Ref<RealtimeMediaSource>&&); |
68 | static Ref<MediaStreamTrackPrivate> create(Ref<RealtimeMediaSource>&&, String&& id); |
69 | |
70 | virtual ~MediaStreamTrackPrivate(); |
71 | |
72 | const String& id() const { return m_id; } |
73 | const String& label() const; |
74 | |
75 | bool ended() const { return m_isEnded; } |
76 | |
77 | enum class HintValue { Empty, Speech, Music, Motion, Detail, Text }; |
78 | HintValue contentHint() const { return m_contentHint; } |
79 | void setContentHint(HintValue); |
80 | |
81 | void startProducingData() { m_source->start(); } |
82 | void stopProducingData() { m_source->stop(); } |
83 | bool isProducingData() { return m_source->isProducingData(); } |
84 | |
85 | bool isIsolated() const { return m_source->isIsolated(); } |
86 | |
87 | bool muted() const; |
88 | void setMuted(bool muted) { m_source->setMuted(muted); } |
89 | |
90 | bool isCaptureTrack() const; |
91 | |
92 | bool enabled() const { return m_isEnabled; } |
93 | void setEnabled(bool); |
94 | |
95 | Ref<MediaStreamTrackPrivate> clone(); |
96 | |
97 | RealtimeMediaSource& source() { return m_source.get(); } |
98 | RealtimeMediaSource::Type type() const; |
99 | |
100 | void endTrack(); |
101 | |
102 | void addObserver(Observer&); |
103 | void removeObserver(Observer&); |
104 | |
105 | const RealtimeMediaSourceSettings& settings() const; |
106 | const RealtimeMediaSourceCapabilities& capabilities() const; |
107 | |
108 | void applyConstraints(const MediaConstraints&, RealtimeMediaSource::ApplyConstraintsHandler&&); |
109 | |
110 | AudioSourceProvider* audioSourceProvider(); |
111 | |
112 | void paintCurrentFrameInContext(GraphicsContext&, const FloatRect&); |
113 | |
114 | enum class ReadyState { None, Live, Ended }; |
115 | ReadyState readyState() const { return m_readyState; } |
116 | |
117 | void setIdForTesting(String&& id) { m_id = WTFMove(id); } |
118 | |
119 | #if !RELEASE_LOG_DISABLED |
120 | void setLogger(const Logger&, const void*); |
121 | const Logger& logger() const final { ASSERT(m_logger); return *m_logger.get(); } |
122 | const void* logIdentifier() const final { return m_logIdentifier; } |
123 | #endif |
124 | |
125 | private: |
126 | MediaStreamTrackPrivate(Ref<RealtimeMediaSource>&&, String&& id); |
127 | |
128 | // RealtimeMediaSourceObserver |
129 | void sourceStarted() final; |
130 | void sourceStopped() final; |
131 | void sourceMutedChanged() final; |
132 | void sourceSettingsChanged() final; |
133 | bool preventSourceFromStopping() final; |
134 | void videoSampleAvailable(MediaSample&) final; |
135 | void audioSamplesAvailable(const MediaTime&, const PlatformAudioData&, const AudioStreamDescription&, size_t) final; |
136 | |
137 | void updateReadyState(); |
138 | |
139 | void forEachObserver(const WTF::Function<void(Observer&)>&) const; |
140 | |
141 | #if !RELEASE_LOG_DISABLED |
142 | const char* logClassName() const final { return "MediaStreamTrackPrivate" ; } |
143 | WTFLogChannel& logChannel() const final; |
144 | |
145 | RefPtr<const Logger> m_logger; |
146 | const void* m_logIdentifier; |
147 | #endif |
148 | |
149 | mutable RecursiveLock m_observersLock; |
150 | HashSet<Observer*> m_observers; |
151 | Ref<RealtimeMediaSource> m_source; |
152 | |
153 | String m_id; |
154 | ReadyState m_readyState { ReadyState::None }; |
155 | bool m_isEnabled { true }; |
156 | bool m_isEnded { false }; |
157 | bool m_haveProducedData { false }; |
158 | HintValue m_contentHint { HintValue::Empty }; |
159 | RefPtr<WebAudioSourceProvider> m_audioSourceProvider; |
160 | }; |
161 | |
162 | typedef Vector<RefPtr<MediaStreamTrackPrivate>> MediaStreamTrackPrivateVector; |
163 | |
164 | } // namespace WebCore |
165 | |
166 | #endif // ENABLE(MEDIA_STREAM) |
167 | |