1 | /* |
2 | * Copyright (C) 2013 Apple 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 APPLE 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 APPLE 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 | #ifndef RealtimeMediaSourceCapabilities_h |
27 | #define RealtimeMediaSourceCapabilities_h |
28 | |
29 | #if ENABLE(MEDIA_STREAM) |
30 | |
31 | #include "RealtimeMediaSourceSettings.h" |
32 | #include <wtf/NeverDestroyed.h> |
33 | #include <wtf/RefCounted.h> |
34 | #include <wtf/Vector.h> |
35 | #include <wtf/text/AtomicString.h> |
36 | |
37 | namespace WebCore { |
38 | |
39 | class CapabilityValueOrRange { |
40 | public: |
41 | |
42 | enum Type { |
43 | Undefined, |
44 | Double, |
45 | ULong, |
46 | DoubleRange, |
47 | ULongRange, |
48 | }; |
49 | Type type() const { return m_type; } |
50 | |
51 | union ValueUnion { |
52 | int asInt; |
53 | double asDouble; |
54 | }; |
55 | |
56 | CapabilityValueOrRange() |
57 | : m_type(Undefined) |
58 | { |
59 | } |
60 | |
61 | CapabilityValueOrRange(double value) |
62 | : m_type(Double) |
63 | { |
64 | m_minOrValue.asDouble = value; |
65 | } |
66 | |
67 | CapabilityValueOrRange(int value) |
68 | : m_type(ULong) |
69 | { |
70 | m_minOrValue.asInt = value; |
71 | } |
72 | |
73 | CapabilityValueOrRange(double min, double max) |
74 | : m_type(DoubleRange) |
75 | { |
76 | m_minOrValue.asDouble = min; |
77 | m_max.asDouble = max; |
78 | } |
79 | |
80 | CapabilityValueOrRange(int min, int max) |
81 | : m_type(ULongRange) |
82 | { |
83 | m_minOrValue.asInt = min; |
84 | m_max.asInt = max; |
85 | } |
86 | |
87 | const ValueUnion& rangeMin() const |
88 | { |
89 | ASSERT(m_type == DoubleRange || m_type == ULongRange); |
90 | return m_minOrValue; |
91 | } |
92 | |
93 | const ValueUnion& rangeMax() const |
94 | { |
95 | ASSERT(m_type == DoubleRange || m_type == ULongRange); |
96 | return m_max; |
97 | } |
98 | |
99 | const ValueUnion& value() const |
100 | { |
101 | ASSERT(m_type == Double || m_type == ULong); |
102 | return m_minOrValue; |
103 | } |
104 | |
105 | template<class Encoder> void encode(Encoder&) const; |
106 | template<class Decoder> static bool decode(Decoder&, CapabilityValueOrRange&); |
107 | |
108 | private: |
109 | ValueUnion m_minOrValue; |
110 | ValueUnion m_max; |
111 | Type m_type; |
112 | }; |
113 | |
114 | template<class Encoder> |
115 | void CapabilityValueOrRange::encode(Encoder& encoder) const |
116 | { |
117 | encoder.encodeFixedLengthData(reinterpret_cast<const uint8_t*>(&m_minOrValue), sizeof(ValueUnion), alignof(ValueUnion)); |
118 | encoder.encodeFixedLengthData(reinterpret_cast<const uint8_t*>(&m_max), sizeof(ValueUnion), alignof(ValueUnion)); |
119 | encoder.encodeEnum(m_type); |
120 | } |
121 | |
122 | template<class Decoder> |
123 | bool CapabilityValueOrRange::decode(Decoder& decoder, CapabilityValueOrRange& valueOrRange) |
124 | { |
125 | return decoder.decodeFixedLengthData(reinterpret_cast<uint8_t*>(&valueOrRange.m_minOrValue), sizeof(ValueUnion), alignof(ValueUnion)) |
126 | && decoder.decodeFixedLengthData(reinterpret_cast<uint8_t*>(&valueOrRange.m_max), sizeof(ValueUnion), alignof(ValueUnion)) |
127 | && decoder.decodeEnum(valueOrRange.m_type); |
128 | } |
129 | |
130 | class RealtimeMediaSourceCapabilities { |
131 | public: |
132 | RealtimeMediaSourceCapabilities() = default; |
133 | RealtimeMediaSourceCapabilities(const RealtimeMediaSourceSupportedConstraints& supportedConstraints) |
134 | : m_supportedConstraints(supportedConstraints) |
135 | { |
136 | } |
137 | |
138 | ~RealtimeMediaSourceCapabilities() = default; |
139 | |
140 | static const RealtimeMediaSourceCapabilities& emptyCapabilities() |
141 | { |
142 | static NeverDestroyed<RealtimeMediaSourceCapabilities> emptyCapabilities; |
143 | return emptyCapabilities; |
144 | } |
145 | |
146 | bool supportsWidth() const { return m_supportedConstraints.supportsWidth(); } |
147 | const CapabilityValueOrRange& width() const { return m_width; } |
148 | void setWidth(const CapabilityValueOrRange& width) { m_width = width; } |
149 | |
150 | bool supportsHeight() const { return m_supportedConstraints.supportsHeight(); } |
151 | const CapabilityValueOrRange& height() const { return m_height; } |
152 | void setHeight(const CapabilityValueOrRange& height) { m_height = height; } |
153 | |
154 | bool supportsFrameRate() const { return m_supportedConstraints.supportsFrameRate(); } |
155 | const CapabilityValueOrRange& frameRate() const { return m_frameRate; } |
156 | void setFrameRate(const CapabilityValueOrRange& frameRate) { m_frameRate = frameRate; } |
157 | |
158 | bool supportsFacingMode() const { return m_supportedConstraints.supportsFacingMode(); } |
159 | const Vector<RealtimeMediaSourceSettings::VideoFacingMode>& facingMode() const { return m_facingMode; } |
160 | void addFacingMode(RealtimeMediaSourceSettings::VideoFacingMode mode) { m_facingMode.append(mode); } |
161 | |
162 | bool supportsAspectRatio() const { return m_supportedConstraints.supportsAspectRatio(); } |
163 | const CapabilityValueOrRange& aspectRatio() const { return m_aspectRatio; } |
164 | void setAspectRatio(const CapabilityValueOrRange& aspectRatio) { m_aspectRatio = aspectRatio; } |
165 | |
166 | bool supportsVolume() const { return m_supportedConstraints.supportsVolume(); } |
167 | const CapabilityValueOrRange& volume() const { return m_volume; } |
168 | void setVolume(const CapabilityValueOrRange& volume) { m_volume = volume; } |
169 | |
170 | bool supportsSampleRate() const { return m_supportedConstraints.supportsSampleRate(); } |
171 | const CapabilityValueOrRange& sampleRate() const { return m_sampleRate; } |
172 | void setSampleRate(const CapabilityValueOrRange& sampleRate) { m_sampleRate = sampleRate; } |
173 | |
174 | bool supportsSampleSize() const { return m_supportedConstraints.supportsSampleSize(); } |
175 | const CapabilityValueOrRange& sampleSize() const { return m_sampleSize; } |
176 | void setSampleSize(const CapabilityValueOrRange& sampleSize) { m_sampleSize = sampleSize; } |
177 | |
178 | enum class EchoCancellation { |
179 | ReadOnly = 0, |
180 | ReadWrite = 1, |
181 | }; |
182 | bool supportsEchoCancellation() const { return m_supportedConstraints.supportsEchoCancellation(); } |
183 | EchoCancellation echoCancellation() const { return m_echoCancellation; } |
184 | void setEchoCancellation(EchoCancellation echoCancellation) { m_echoCancellation = echoCancellation; } |
185 | |
186 | bool supportsDeviceId() const { return m_supportedConstraints.supportsDeviceId(); } |
187 | const AtomicString& deviceId() const { return m_deviceId; } |
188 | void setDeviceId(const AtomicString& id) { m_deviceId = id; } |
189 | |
190 | bool supportsGroupId() const { return m_supportedConstraints.supportsGroupId(); } |
191 | const AtomicString& groupId() const { return m_groupId; } |
192 | void setGroupId(const AtomicString& id) { m_groupId = id; } |
193 | |
194 | const RealtimeMediaSourceSupportedConstraints& supportedConstraints() const { return m_supportedConstraints; } |
195 | void setSupportedConstraints(const RealtimeMediaSourceSupportedConstraints& constraints) { m_supportedConstraints = constraints; } |
196 | |
197 | template<class Encoder> void encode(Encoder&) const; |
198 | template<class Decoder> static bool decode(Decoder&, RealtimeMediaSourceCapabilities&); |
199 | |
200 | private: |
201 | CapabilityValueOrRange m_width; |
202 | CapabilityValueOrRange m_height; |
203 | CapabilityValueOrRange m_aspectRatio; |
204 | CapabilityValueOrRange m_frameRate; |
205 | Vector<RealtimeMediaSourceSettings::VideoFacingMode> m_facingMode; |
206 | CapabilityValueOrRange m_volume; |
207 | CapabilityValueOrRange m_sampleRate; |
208 | CapabilityValueOrRange m_sampleSize; |
209 | EchoCancellation m_echoCancellation; |
210 | AtomicString m_deviceId; |
211 | AtomicString m_groupId; |
212 | |
213 | RealtimeMediaSourceSupportedConstraints m_supportedConstraints; |
214 | }; |
215 | |
216 | template<class Encoder> |
217 | void RealtimeMediaSourceCapabilities::encode(Encoder& encoder) const |
218 | { |
219 | encoder << m_width |
220 | << m_height |
221 | << m_aspectRatio |
222 | << m_frameRate |
223 | << m_facingMode |
224 | << m_volume |
225 | << m_sampleRate |
226 | << m_sampleSize |
227 | << m_deviceId |
228 | << m_groupId |
229 | << m_supportedConstraints; |
230 | encoder.encodeEnum(m_echoCancellation); |
231 | } |
232 | |
233 | template<class Decoder> |
234 | bool RealtimeMediaSourceCapabilities::decode(Decoder& decoder, RealtimeMediaSourceCapabilities& capabilities) |
235 | { |
236 | return decoder.decode(capabilities.m_width) |
237 | && decoder.decode(capabilities.m_height) |
238 | && decoder.decode(capabilities.m_aspectRatio) |
239 | && decoder.decode(capabilities.m_frameRate) |
240 | && decoder.decode(capabilities.m_facingMode) |
241 | && decoder.decode(capabilities.m_volume) |
242 | && decoder.decode(capabilities.m_sampleRate) |
243 | && decoder.decode(capabilities.m_sampleSize) |
244 | && decoder.decode(capabilities.m_deviceId) |
245 | && decoder.decode(capabilities.m_groupId) |
246 | && decoder.decode(capabilities.m_supportedConstraints) |
247 | && decoder.decodeEnum(capabilities.m_echoCancellation); |
248 | } |
249 | |
250 | } // namespace WebCore |
251 | |
252 | #endif // RealtimeMediaSourceCapabilities_h |
253 | |
254 | #endif |
255 | |