1 /*
2 * Copyright 2018 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 * http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17 #include <base/logging.h>
18
19 #include "register_notification_packet.h"
20
21 namespace bluetooth {
22 namespace avrcp {
23
IsInterim() const24 bool RegisterNotificationResponse::IsInterim() const {
25 return GetCType() == CType::INTERIM;
26 }
27
GetEvent() const28 Event RegisterNotificationResponse::GetEvent() const {
29 auto value = *(begin() + VendorPacket::kMinSize());
30 return static_cast<Event>(value);
31 }
32
GetVolume() const33 uint8_t RegisterNotificationResponse::GetVolume() const {
34 CHECK(GetEvent() == Event::VOLUME_CHANGED);
35 auto it = begin() + VendorPacket::kMinSize() + static_cast<size_t>(1);
36 return *it;
37 }
38
IsValid() const39 bool RegisterNotificationResponse::IsValid() const {
40 if (!VendorPacket::IsValid()) return false;
41 if (size() < kMinSize()) return false;
42 if (GetCType() != CType::INTERIM && GetCType() != CType::CHANGED)
43 return false;
44
45 switch (GetEvent()) {
46 case Event::VOLUME_CHANGED:
47 return size() == (kMinSize() + 1);
48 default:
49 // TODO (apanicke): Add the remaining events when implementing AVRCP
50 // Controller
51 return false;
52 }
53 }
54
ToString() const55 std::string RegisterNotificationResponse::ToString() const {
56 std::stringstream ss;
57 ss << "RegisterNotificationResponse: " << std::endl;
58 ss << " └ cType = " << GetCType() << std::endl;
59 ss << " └ Subunit Type = " << loghex(GetSubunitType()) << std::endl;
60 ss << " └ Subunit ID = " << loghex(GetSubunitId()) << std::endl;
61 ss << " └ OpCode = " << GetOpcode() << std::endl;
62 ss << " └ Company ID = " << loghex(GetCompanyId()) << std::endl;
63 ss << " └ Command PDU = " << GetCommandPdu() << std::endl;
64 ss << " └ PacketType = " << GetPacketType() << std::endl;
65 ss << " └ Parameter Length = " << loghex(GetParameterLength()) << std::endl;
66 ss << " └ Event Registered = " << GetEvent() << std::endl;
67 ss << std::endl;
68
69 return ss.str();
70 }
71
72 std::unique_ptr<RegisterNotificationResponseBuilder>
MakePlaybackStatusBuilder(bool interim,uint8_t play_status)73 RegisterNotificationResponseBuilder::MakePlaybackStatusBuilder(
74 bool interim, uint8_t play_status) {
75 std::unique_ptr<RegisterNotificationResponseBuilder> builder(
76 new RegisterNotificationResponseBuilder(interim,
77 Event::PLAYBACK_STATUS_CHANGED));
78
79 builder->data_ = play_status;
80 return builder;
81 }
82
83 std::unique_ptr<RegisterNotificationResponseBuilder>
MakeTrackChangedBuilder(bool interim,uint64_t track_uid)84 RegisterNotificationResponseBuilder::MakeTrackChangedBuilder(
85 bool interim, uint64_t track_uid) {
86 std::unique_ptr<RegisterNotificationResponseBuilder> builder(
87 new RegisterNotificationResponseBuilder(interim, Event::TRACK_CHANGED));
88
89 builder->data_ = track_uid;
90 return builder;
91 }
92
93 std::unique_ptr<RegisterNotificationResponseBuilder>
MakePlaybackPositionBuilder(bool interim,uint32_t playback_pos)94 RegisterNotificationResponseBuilder::MakePlaybackPositionBuilder(
95 bool interim, uint32_t playback_pos) {
96 std::unique_ptr<RegisterNotificationResponseBuilder> builder(
97 new RegisterNotificationResponseBuilder(interim,
98 Event::PLAYBACK_POS_CHANGED));
99
100 builder->data_ = playback_pos;
101 return builder;
102 }
103
104 std::unique_ptr<RegisterNotificationResponseBuilder>
MakeNowPlayingBuilder(bool interim)105 RegisterNotificationResponseBuilder::MakeNowPlayingBuilder(bool interim) {
106 std::unique_ptr<RegisterNotificationResponseBuilder> builder(
107 new RegisterNotificationResponseBuilder(
108 interim, Event::NOW_PLAYING_CONTENT_CHANGED));
109 return builder;
110 }
111
112 std::unique_ptr<RegisterNotificationResponseBuilder>
MakeAvailablePlayersBuilder(bool interim)113 RegisterNotificationResponseBuilder::MakeAvailablePlayersBuilder(bool interim) {
114 std::unique_ptr<RegisterNotificationResponseBuilder> builder(
115 new RegisterNotificationResponseBuilder(
116 interim, Event::AVAILABLE_PLAYERS_CHANGED));
117 return builder;
118 }
119
120 std::unique_ptr<RegisterNotificationResponseBuilder>
MakeAddressedPlayerBuilder(bool interim,uint16_t player_id,uint16_t uid_counter)121 RegisterNotificationResponseBuilder::MakeAddressedPlayerBuilder(
122 bool interim, uint16_t player_id, uint16_t uid_counter) {
123 std::unique_ptr<RegisterNotificationResponseBuilder> builder(
124 new RegisterNotificationResponseBuilder(interim,
125 Event::ADDRESSED_PLAYER_CHANGED));
126 builder->data_ = ((uint32_t)player_id) << 16;
127 builder->data_ |= uid_counter;
128 return builder;
129 }
130
131 std::unique_ptr<RegisterNotificationResponseBuilder>
MakeUidsChangedBuilder(bool interim,uint16_t uid_counter)132 RegisterNotificationResponseBuilder::MakeUidsChangedBuilder(
133 bool interim, uint16_t uid_counter) {
134 std::unique_ptr<RegisterNotificationResponseBuilder> builder(
135 new RegisterNotificationResponseBuilder(interim, Event::UIDS_CHANGED));
136
137 builder->data_ = uid_counter;
138 return builder;
139 }
140
size() const141 size_t RegisterNotificationResponseBuilder::size() const {
142 size_t data_size = 0;
143
144 // We specifically avoid having a default case here in order to ensure that
145 // there is an error in case an event isn't handled.
146 switch (event_) {
147 case Event::PLAYBACK_STATUS_CHANGED:
148 data_size = 1;
149 break;
150 case Event::TRACK_CHANGED:
151 data_size = 8;
152 break;
153 case Event::PLAYBACK_POS_CHANGED:
154 data_size = 4;
155 break;
156 case Event::PLAYER_APPLICATION_SETTING_CHANGED:
157 LOG(FATAL) << "Player Application Notification Not Implemented";
158 break;
159 case Event::NOW_PLAYING_CONTENT_CHANGED:
160 data_size = 0;
161 break;
162 case Event::AVAILABLE_PLAYERS_CHANGED:
163 data_size = 0;
164 break;
165 case Event::ADDRESSED_PLAYER_CHANGED:
166 data_size = 4;
167 break;
168 case Event::UIDS_CHANGED:
169 data_size = 2;
170 break;
171 case Event::VOLUME_CHANGED:
172 LOG(FATAL) << "Volume Changed Notification Not Implemented";
173 break;
174 }
175
176 return VendorPacket::kMinSize() + 1 + data_size;
177 }
178
Serialize(const std::shared_ptr<::bluetooth::Packet> & pkt)179 bool RegisterNotificationResponseBuilder::Serialize(
180 const std::shared_ptr<::bluetooth::Packet>& pkt) {
181 ReserveSpace(pkt, size());
182
183 PacketBuilder::PushHeader(pkt);
184
185 VendorPacketBuilder::PushHeader(pkt, size() - VendorPacket::kMinSize());
186
187 AddPayloadOctets1(pkt, static_cast<uint8_t>(event_));
188 switch (event_) {
189 case Event::PLAYBACK_STATUS_CHANGED: {
190 uint8_t playback_status = data_ & 0xFF;
191 AddPayloadOctets1(pkt, playback_status);
192 break;
193 }
194 case Event::TRACK_CHANGED: {
195 AddPayloadOctets8(pkt, base::ByteSwap(data_));
196 break;
197 }
198 case Event::PLAYBACK_POS_CHANGED: {
199 uint32_t playback_pos = data_ & 0xFFFFFFFF;
200 AddPayloadOctets4(pkt, base::ByteSwap(playback_pos));
201 break;
202 }
203 case Event::PLAYER_APPLICATION_SETTING_CHANGED:
204 break; // No additional data
205 case Event::NOW_PLAYING_CONTENT_CHANGED:
206 break; // No additional data
207 case Event::AVAILABLE_PLAYERS_CHANGED:
208 break; // No additional data
209 case Event::ADDRESSED_PLAYER_CHANGED: {
210 uint16_t uid_counter = data_ & 0xFFFF;
211 uint16_t player_id = (data_ >> 16) & 0xFFFF;
212 AddPayloadOctets2(pkt, base::ByteSwap(player_id));
213 AddPayloadOctets2(pkt, base::ByteSwap(uid_counter));
214 break;
215 }
216 case Event::UIDS_CHANGED: {
217 uint16_t uid_counter = data_ & 0xFFFF;
218 AddPayloadOctets2(pkt, base::ByteSwap(uid_counter));
219 break;
220 }
221 case Event::VOLUME_CHANGED:
222 // TODO (apanicke): Add Volume Changed builder for when we are controller.
223 LOG(FATAL) << "Volume Changed Notification Not Implemented";
224 break;
225 }
226
227 return true;
228 }
229
GetEventRegistered() const230 Event RegisterNotificationRequest::GetEventRegistered() const {
231 auto value = *(begin() + VendorPacket::kMinSize());
232 return static_cast<Event>(value);
233 }
234
GetInterval() const235 uint32_t RegisterNotificationRequest::GetInterval() const {
236 auto it = begin() + VendorPacket::kMinSize() + static_cast<size_t>(1);
237 return base::ByteSwap(it.extract<uint32_t>());
238 }
239
IsValid() const240 bool RegisterNotificationRequest::IsValid() const {
241 return (size() == kMinSize());
242 }
243
ToString() const244 std::string RegisterNotificationRequest::ToString() const {
245 std::stringstream ss;
246 ss << "RegisterNotificationPacket: " << std::endl;
247 ss << " └ cType = " << GetCType() << std::endl;
248 ss << " └ Subunit Type = " << loghex(GetSubunitType()) << std::endl;
249 ss << " └ Subunit ID = " << loghex(GetSubunitId()) << std::endl;
250 ss << " └ OpCode = " << GetOpcode() << std::endl;
251 ss << " └ Company ID = " << loghex(GetCompanyId()) << std::endl;
252 ss << " └ Command PDU = " << GetCommandPdu() << std::endl;
253 ss << " └ PacketType = " << GetPacketType() << std::endl;
254 ss << " └ Parameter Length = " << loghex(GetParameterLength()) << std::endl;
255 ss << " └ Event Registered = " << GetEventRegistered() << std::endl;
256 ss << " └ Interval = " << loghex(GetInterval()) << std::endl;
257 ss << std::endl;
258
259 return ss.str();
260 }
261
262 std::unique_ptr<RegisterNotificationRequestBuilder>
MakeBuilder(Event event,uint32_t interval)263 RegisterNotificationRequestBuilder::MakeBuilder(Event event,
264 uint32_t interval) {
265 std::unique_ptr<RegisterNotificationRequestBuilder> builder(
266 new RegisterNotificationRequestBuilder(event, interval));
267
268 return builder;
269 }
270
size() const271 size_t RegisterNotificationRequestBuilder::size() const {
272 return RegisterNotificationRequest::kMinSize();
273 }
274
Serialize(const std::shared_ptr<::bluetooth::Packet> & pkt)275 bool RegisterNotificationRequestBuilder::Serialize(
276 const std::shared_ptr<::bluetooth::Packet>& pkt) {
277 ReserveSpace(pkt, size());
278
279 PacketBuilder::PushHeader(pkt);
280
281 VendorPacketBuilder::PushHeader(pkt, size() - VendorPacket::kMinSize());
282
283 AddPayloadOctets1(pkt, static_cast<uint8_t>(event_));
284
285 AddPayloadOctets4(pkt, base::ByteSwap(interval_));
286
287 return true;
288 }
289
290 } // namespace avrcp
291 } // namespace bluetooth