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
~AAudioServiceEndpoint()41 AAudioServiceEndpoint::~AAudioServiceEndpoint() {
42 ALOGD("%s() called", __func__);
43 }
44
dump() const45 std::string AAudioServiceEndpoint::dump() const NO_THREAD_SAFETY_ANALYSIS {
46 std::stringstream result;
47
48 const bool isLocked = AAudio_tryUntilTrue(
49 [this]()->bool { return mLockStreams.try_lock(); } /* f */,
50 50 /* times */,
51 20 /* sleepMs */);
52 if (!isLocked) {
53 result << "AAudioServiceEndpoint may be deadlocked\n";
54 }
55
56 result << " Direction: " << ((getDirection() == AAUDIO_DIRECTION_OUTPUT)
57 ? "OUTPUT" : "INPUT") << "\n";
58 result << " Requested Device Id: " << mRequestedDeviceId << "\n";
59 result << " Device Id: " << getDeviceId() << "\n";
60 result << " Sample Rate: " << getSampleRate() << "\n";
61 result << " Channel Count: " << getSamplesPerFrame() << "\n";
62 result << " Format: " << getFormat() << "\n";
63 result << " Frames Per Burst: " << mFramesPerBurst << "\n";
64 result << " Usage: " << getUsage() << "\n";
65 result << " ContentType: " << getContentType() << "\n";
66 result << " InputPreset: " << getInputPreset() << "\n";
67 result << " Reference Count: " << mOpenCount << "\n";
68 result << " Session Id: " << getSessionId() << "\n";
69 result << " Privacy Sensitive: " << isPrivacySensitive() << "\n";
70 result << " Connected: " << mConnected.load() << "\n";
71 result << " Registered Streams:" << "\n";
72 result << AAudioServiceStreamShared::dumpHeader() << "\n";
73 for (const auto& stream : mRegisteredStreams) {
74 result << stream->dump() << "\n";
75 }
76
77 if (isLocked) {
78 mLockStreams.unlock();
79 }
80 return result.str();
81 }
82
83 // @return true if stream found
isStreamRegistered(audio_port_handle_t portHandle)84 bool AAudioServiceEndpoint::isStreamRegistered(audio_port_handle_t portHandle) {
85 std::lock_guard<std::mutex> lock(mLockStreams);
86 for (const auto& stream : mRegisteredStreams) {
87 if (stream->getPortHandle() == portHandle) {
88 return true;
89 }
90 }
91 return false;
92 }
93
94 std::vector<android::sp<AAudioServiceStreamBase>>
disconnectRegisteredStreams()95 AAudioServiceEndpoint::disconnectRegisteredStreams() {
96 std::vector<android::sp<AAudioServiceStreamBase>> streamsDisconnected;
97 {
98 std::lock_guard<std::mutex> lock(mLockStreams);
99 mRegisteredStreams.swap(streamsDisconnected);
100 }
101 mConnected.store(false);
102 // We need to stop all the streams before we disconnect them.
103 // Otherwise there is a race condition where the first disconnected app
104 // tries to reopen a stream as MMAP but is blocked by the second stream,
105 // which hasn't stopped yet. Then the first app ends up with a Legacy stream.
106 for (const auto &stream : streamsDisconnected) {
107 ALOGD("%s() - stop(), port = %d", __func__, stream->getPortHandle());
108 stream->stop();
109 }
110 for (const auto &stream : streamsDisconnected) {
111 ALOGD("%s() - disconnect(), port = %d", __func__, stream->getPortHandle());
112 stream->disconnect();
113 }
114 return streamsDisconnected;
115 }
116
releaseRegisteredStreams()117 void AAudioServiceEndpoint::releaseRegisteredStreams() {
118 // List of streams to be closed after we disconnect everything.
119 std::vector<android::sp<AAudioServiceStreamBase>> streamsToClose
120 = disconnectRegisteredStreams();
121
122 // Close outside the lock to avoid recursive locks.
123 AAudioService *aaudioService = AAudioClientTracker::getInstance().getAAudioService();
124 for (const auto& serviceStream : streamsToClose) {
125 ALOGD("%s() - close stream 0x%08X", __func__, serviceStream->getHandle());
126 aaudioService->closeStream(serviceStream);
127 }
128 }
129
registerStream(sp<AAudioServiceStreamBase> stream)130 aaudio_result_t AAudioServiceEndpoint::registerStream(sp<AAudioServiceStreamBase>stream) {
131 std::lock_guard<std::mutex> lock(mLockStreams);
132 mRegisteredStreams.push_back(stream);
133 return AAUDIO_OK;
134 }
135
unregisterStream(sp<AAudioServiceStreamBase> stream)136 aaudio_result_t AAudioServiceEndpoint::unregisterStream(sp<AAudioServiceStreamBase>stream) {
137 std::lock_guard<std::mutex> lock(mLockStreams);
138 mRegisteredStreams.erase(std::remove(
139 mRegisteredStreams.begin(), mRegisteredStreams.end(), stream),
140 mRegisteredStreams.end());
141 return AAUDIO_OK;
142 }
143
matches(const AAudioStreamConfiguration & configuration)144 bool AAudioServiceEndpoint::matches(const AAudioStreamConfiguration& configuration) {
145 if (!mConnected.load()) {
146 return false; // Only use an endpoint if it is connected to a device.
147 }
148 if (configuration.getDirection() != getDirection()) {
149 return false;
150 }
151 if (configuration.getDeviceId() != AAUDIO_UNSPECIFIED &&
152 configuration.getDeviceId() != getDeviceId()) {
153 return false;
154 }
155 if (configuration.getSessionId() != AAUDIO_SESSION_ID_ALLOCATE &&
156 configuration.getSessionId() != getSessionId()) {
157 return false;
158 }
159 if (configuration.getSampleRate() != AAUDIO_UNSPECIFIED &&
160 configuration.getSampleRate() != getSampleRate()) {
161 return false;
162 }
163 if (configuration.getSamplesPerFrame() != AAUDIO_UNSPECIFIED &&
164 configuration.getSamplesPerFrame() != getSamplesPerFrame()) {
165 return false;
166 }
167 return true;
168 }
169
170 // static
getAudioAttributesFrom(const AAudioStreamParameters * params)171 audio_attributes_t AAudioServiceEndpoint::getAudioAttributesFrom(
172 const AAudioStreamParameters *params) {
173 if (params == nullptr) {
174 return {};
175 }
176 const aaudio_direction_t direction = params->getDirection();
177
178 const audio_content_type_t contentType =
179 AAudioConvert_contentTypeToInternal(params->getContentType());
180 // Usage only used for OUTPUT
181 const audio_usage_t usage = (direction == AAUDIO_DIRECTION_OUTPUT)
182 ? AAudioConvert_usageToInternal(params->getUsage())
183 : AUDIO_USAGE_UNKNOWN;
184 const audio_source_t source = (direction == AAUDIO_DIRECTION_INPUT)
185 ? AAudioConvert_inputPresetToAudioSource(params->getInputPreset())
186 : AUDIO_SOURCE_DEFAULT;
187 audio_flags_mask_t flags;
188 if (direction == AAUDIO_DIRECTION_OUTPUT) {
189 flags = static_cast<audio_flags_mask_t>(AUDIO_FLAG_LOW_LATENCY
190 | AAudioConvert_allowCapturePolicyToAudioFlagsMask(
191 params->getAllowedCapturePolicy()));
192 } else {
193 flags = static_cast<audio_flags_mask_t>(AUDIO_FLAG_LOW_LATENCY
194 | AAudioConvert_privacySensitiveToAudioFlagsMask(params->isPrivacySensitive()));
195 }
196 return {
197 .content_type = contentType,
198 .usage = usage,
199 .source = source,
200 .flags = flags,
201 .tags = "" };
202 }
203