1 /*
2 * Copyright (C) 2017 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 #define LOG_TAG "AAudioServiceEndpoint"
18 //#define LOG_NDEBUG 0
19 #include <utils/Log.h>
20
21 #include <algorithm>
22 #include <assert.h>
23 #include <map>
24 #include <mutex>
25 #include <sstream>
26 #include <vector>
27
28 #include <utils/Singleton.h>
29
30
31 #include "core/AudioStreamBuilder.h"
32
33 #include "AAudioEndpointManager.h"
34 #include "AAudioClientTracker.h"
35 #include "AAudioServiceEndpoint.h"
36 #include "AAudioServiceStreamShared.h"
37
38 using namespace android; // TODO just import names needed
39 using namespace aaudio; // TODO just import names needed
40
dump() const41 std::string AAudioServiceEndpoint::dump() const {
42 std::stringstream result;
43
44 const bool isLocked = AAudio_tryUntilTrue(
45 [this]()->bool { return mLockStreams.try_lock(); } /* f */,
46 50 /* times */,
47 20 /* sleepMs */);
48 if (!isLocked) {
49 result << "AAudioServiceEndpoint may be deadlocked\n";
50 }
51
52 result << " Direction: " << ((getDirection() == AAUDIO_DIRECTION_OUTPUT)
53 ? "OUTPUT" : "INPUT") << "\n";
54 result << " Requested Device Id: " << mRequestedDeviceId << "\n";
55 result << " Device Id: " << getDeviceId() << "\n";
56 result << " Sample Rate: " << getSampleRate() << "\n";
57 result << " Channel Count: " << getSamplesPerFrame() << "\n";
58 result << " Format: " << getFormat() << "\n";
59 result << " Frames Per Burst: " << mFramesPerBurst << "\n";
60 result << " Usage: " << getUsage() << "\n";
61 result << " ContentType: " << getContentType() << "\n";
62 result << " InputPreset: " << getInputPreset() << "\n";
63 result << " Reference Count: " << mOpenCount << "\n";
64 result << " Session Id: " << getSessionId() << "\n";
65 result << " Privacy Sensitive: " << isPrivacySensitive() << "\n";
66 result << " Connected: " << mConnected.load() << "\n";
67 result << " Registered Streams:" << "\n";
68 result << AAudioServiceStreamShared::dumpHeader() << "\n";
69 for (const auto& stream : mRegisteredStreams) {
70 result << stream->dump() << "\n";
71 }
72
73 if (isLocked) {
74 mLockStreams.unlock();
75 }
76 return result.str();
77 }
78
79 // @return true if stream found
isStreamRegistered(audio_port_handle_t portHandle)80 bool AAudioServiceEndpoint::isStreamRegistered(audio_port_handle_t portHandle) {
81 std::lock_guard<std::mutex> lock(mLockStreams);
82 for (const auto& stream : mRegisteredStreams) {
83 if (stream->getPortHandle() == portHandle) {
84 return true;
85 }
86 }
87 return false;
88 }
89
90 std::vector<android::sp<AAudioServiceStreamBase>>
disconnectRegisteredStreams()91 AAudioServiceEndpoint::disconnectRegisteredStreams() {
92 std::vector<android::sp<AAudioServiceStreamBase>> streamsDisconnected;
93 {
94 std::lock_guard<std::mutex> lock(mLockStreams);
95 mRegisteredStreams.swap(streamsDisconnected);
96 }
97 mConnected.store(false);
98 // We need to stop all the streams before we disconnect them.
99 // Otherwise there is a race condition where the first disconnected app
100 // tries to reopen a stream as MMAP but is blocked by the second stream,
101 // which hasn't stopped yet. Then the first app ends up with a Legacy stream.
102 for (const auto &stream : streamsDisconnected) {
103 ALOGD("%s() - stop(), port = %d", __func__, stream->getPortHandle());
104 stream->stop();
105 }
106 for (const auto &stream : streamsDisconnected) {
107 ALOGD("%s() - disconnect(), port = %d", __func__, stream->getPortHandle());
108 stream->disconnect();
109 }
110 return streamsDisconnected;
111 }
112
releaseRegisteredStreams()113 void AAudioServiceEndpoint::releaseRegisteredStreams() {
114 // List of streams to be closed after we disconnect everything.
115 std::vector<android::sp<AAudioServiceStreamBase>> streamsToClose
116 = disconnectRegisteredStreams();
117
118 // Close outside the lock to avoid recursive locks.
119 AAudioService *aaudioService = AAudioClientTracker::getInstance().getAAudioService();
120 for (const auto& serviceStream : streamsToClose) {
121 ALOGD("%s() - close stream 0x%08X", __func__, serviceStream->getHandle());
122 aaudioService->closeStream(serviceStream);
123 }
124 }
125
registerStream(sp<AAudioServiceStreamBase> stream)126 aaudio_result_t AAudioServiceEndpoint::registerStream(sp<AAudioServiceStreamBase>stream) {
127 std::lock_guard<std::mutex> lock(mLockStreams);
128 mRegisteredStreams.push_back(stream);
129 return AAUDIO_OK;
130 }
131
unregisterStream(sp<AAudioServiceStreamBase> stream)132 aaudio_result_t AAudioServiceEndpoint::unregisterStream(sp<AAudioServiceStreamBase>stream) {
133 std::lock_guard<std::mutex> lock(mLockStreams);
134 mRegisteredStreams.erase(std::remove(
135 mRegisteredStreams.begin(), mRegisteredStreams.end(), stream),
136 mRegisteredStreams.end());
137 return AAUDIO_OK;
138 }
139
matches(const AAudioStreamConfiguration & configuration)140 bool AAudioServiceEndpoint::matches(const AAudioStreamConfiguration& configuration) {
141 if (!mConnected.load()) {
142 return false; // Only use an endpoint if it is connected to a device.
143 }
144 if (configuration.getDirection() != getDirection()) {
145 return false;
146 }
147 if (configuration.getDeviceId() != AAUDIO_UNSPECIFIED &&
148 configuration.getDeviceId() != getDeviceId()) {
149 return false;
150 }
151 if (configuration.getSessionId() != AAUDIO_SESSION_ID_ALLOCATE &&
152 configuration.getSessionId() != getSessionId()) {
153 return false;
154 }
155 if (configuration.getSampleRate() != AAUDIO_UNSPECIFIED &&
156 configuration.getSampleRate() != getSampleRate()) {
157 return false;
158 }
159 if (configuration.getSamplesPerFrame() != AAUDIO_UNSPECIFIED &&
160 configuration.getSamplesPerFrame() != getSamplesPerFrame()) {
161 return false;
162 }
163 return true;
164 }
165
166 // static
getAudioAttributesFrom(const AAudioStreamParameters * params)167 audio_attributes_t AAudioServiceEndpoint::getAudioAttributesFrom(
168 const AAudioStreamParameters *params) {
169 if (params == nullptr) {
170 return {};
171 }
172 const aaudio_direction_t direction = params->getDirection();
173
174 const audio_content_type_t contentType =
175 AAudioConvert_contentTypeToInternal(params->getContentType());
176 // Usage only used for OUTPUT
177 const audio_usage_t usage = (direction == AAUDIO_DIRECTION_OUTPUT)
178 ? AAudioConvert_usageToInternal(params->getUsage())
179 : AUDIO_USAGE_UNKNOWN;
180 const audio_source_t source = (direction == AAUDIO_DIRECTION_INPUT)
181 ? AAudioConvert_inputPresetToAudioSource(params->getInputPreset())
182 : AUDIO_SOURCE_DEFAULT;
183 audio_flags_mask_t flags;
184 if (direction == AAUDIO_DIRECTION_OUTPUT) {
185 flags = AUDIO_FLAG_LOW_LATENCY
186 | AAudioConvert_allowCapturePolicyToAudioFlagsMask(params->getAllowedCapturePolicy());
187 } else {
188 flags = AUDIO_FLAG_LOW_LATENCY
189 | AAudioConvert_privacySensitiveToAudioFlagsMask(params->isPrivacySensitive());
190 }
191 return {
192 .content_type = contentType,
193 .usage = usage,
194 .source = source,
195 .flags = flags,
196 .tags = "" };
197 }
198