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 <system/aaudio/AAudio.h>
29 #include <utils/Singleton.h>
30
31
32 #include "core/AudioStreamBuilder.h"
33
34 #include "AAudioEndpointManager.h"
35 #include "AAudioClientTracker.h"
36 #include "AAudioServiceEndpoint.h"
37 #include "AAudioServiceStreamShared.h"
38
39 using namespace android; // TODO just import names needed
40 using namespace aaudio; // TODO just import names needed
41
~AAudioServiceEndpoint()42 AAudioServiceEndpoint::~AAudioServiceEndpoint() {
43 ALOGD("%s() called", __func__);
44 }
45
dump() const46 std::string AAudioServiceEndpoint::dump() const NO_THREAD_SAFETY_ANALYSIS {
47 std::stringstream result;
48
49 const bool isLocked = AAudio_tryUntilTrue(
50 [this]()->bool { return mLockStreams.try_lock(); } /* f */,
51 50 /* times */,
52 20 /* sleepMs */);
53 if (!isLocked) {
54 result << "AAudioServiceEndpoint may be deadlocked\n";
55 }
56
57 result << " Direction: " << ((getDirection() == AAUDIO_DIRECTION_OUTPUT)
58 ? "OUTPUT" : "INPUT") << "\n";
59 result << " Requested Device Id: " << mRequestedDeviceId << "\n";
60 result << " Device Ids: " << android::toString(getDeviceIds()).c_str() << "\n";
61 result << " Sample Rate: " << getSampleRate() << "\n";
62 result << " Channel Count: " << getSamplesPerFrame() << "\n";
63 result << " Channel Mask: 0x" << std::hex << getChannelMask() << std::dec << "\n";
64 result << " Format: " << getFormat()
65 << " (" << audio_format_to_string(getFormat()) << ")\n";
66 result << " Frames Per Burst: " << mFramesPerBurst << "\n";
67 result << " Usage: " << getUsage() << "\n";
68 result << " ContentType: " << getContentType() << "\n";
69 result << " InputPreset: " << getInputPreset() << "\n";
70 result << " Reference Count: " << mOpenCount << "\n";
71 result << " Session Id: " << getSessionId() << "\n";
72 result << " Privacy Sensitive: " << isPrivacySensitive() << "\n";
73 result << " Hardware Channel Count:" << getHardwareSamplesPerFrame() << "\n";
74 result << " Hardware Format: " << getHardwareFormat() << " ("
75 << audio_format_to_string(getHardwareFormat()) << ")\n";
76 result << " Hardware Sample Rate: " << getHardwareSampleRate() << "\n";
77 result << " Connected: " << mConnected.load() << "\n";
78 result << " Registered Streams:" << "\n";
79 result << AAudioServiceStreamShared::dumpHeader() << "\n";
80 for (const auto& stream : mRegisteredStreams) {
81 result << stream->dump() << "\n";
82 }
83
84 if (isLocked) {
85 mLockStreams.unlock();
86 }
87 return result.str();
88 }
89
90 // @return true if stream found
isStreamRegistered(audio_port_handle_t portHandle)91 bool AAudioServiceEndpoint::isStreamRegistered(audio_port_handle_t portHandle) {
92 const std::lock_guard<std::mutex> lock(mLockStreams);
93 for (const auto& stream : mRegisteredStreams) {
94 if (stream->getPortHandle() == portHandle) {
95 return true;
96 }
97 }
98 return false;
99 }
100
101 std::vector<android::sp<AAudioServiceStreamBase>>
disconnectRegisteredStreams()102 AAudioServiceEndpoint::disconnectRegisteredStreams() {
103 std::vector<android::sp<AAudioServiceStreamBase>> streamsDisconnected;
104 {
105 const std::lock_guard<std::mutex> lock(mLockStreams);
106 mRegisteredStreams.swap(streamsDisconnected);
107 }
108 mConnected.store(false);
109 // We need to stop all the streams before we disconnect them.
110 // Otherwise there is a race condition where the first disconnected app
111 // tries to reopen a stream as MMAP but is blocked by the second stream,
112 // which hasn't stopped yet. Then the first app ends up with a Legacy stream.
113 for (const auto &stream : streamsDisconnected) {
114 ALOGD("%s() - stop(), port = %d", __func__, stream->getPortHandle());
115 stream->stop();
116 }
117 for (const auto &stream : streamsDisconnected) {
118 ALOGD("%s() - disconnect(), port = %d", __func__, stream->getPortHandle());
119 stream->disconnect();
120 }
121 return streamsDisconnected;
122 }
123
releaseRegisteredStreams()124 void AAudioServiceEndpoint::releaseRegisteredStreams() {
125 // List of streams to be closed after we disconnect everything.
126 const std::vector<android::sp<AAudioServiceStreamBase>> streamsToClose
127 = disconnectRegisteredStreams();
128
129 // Close outside the lock to avoid recursive locks.
130 AAudioService *aaudioService = AAudioClientTracker::getInstance().getAAudioService();
131 for (const auto& serviceStream : streamsToClose) {
132 ALOGD("%s() - close stream 0x%08X", __func__, serviceStream->getHandle());
133 aaudioService->closeStream(serviceStream);
134 }
135 }
136
registerStream(const sp<AAudioServiceStreamBase> & stream)137 aaudio_result_t AAudioServiceEndpoint::registerStream(const sp<AAudioServiceStreamBase>& stream) {
138 const std::lock_guard<std::mutex> lock(mLockStreams);
139 mRegisteredStreams.push_back(stream);
140 return AAUDIO_OK;
141 }
142
unregisterStream(const sp<AAudioServiceStreamBase> & stream)143 aaudio_result_t AAudioServiceEndpoint::unregisterStream(const sp<AAudioServiceStreamBase>& stream) {
144 const std::lock_guard<std::mutex> lock(mLockStreams);
145 mRegisteredStreams.erase(std::remove(
146 mRegisteredStreams.begin(), mRegisteredStreams.end(), stream),
147 mRegisteredStreams.end());
148 return AAUDIO_OK;
149 }
150
matches(const AAudioStreamConfiguration & configuration)151 bool AAudioServiceEndpoint::matches(const AAudioStreamConfiguration& configuration) {
152 if (!mConnected.load()) {
153 return false; // Only use an endpoint if it is connected to a device.
154 }
155 if (configuration.getDirection() != getDirection()) {
156 return false;
157 }
158 if (!configuration.getDeviceIds().empty() &&
159 !android::areDeviceIdsEqual(configuration.getDeviceIds(), getDeviceIds())) {
160 return false;
161 }
162 if (configuration.getSessionId() != AAUDIO_SESSION_ID_ALLOCATE &&
163 configuration.getSessionId() != getSessionId()) {
164 return false;
165 }
166 if (configuration.getSampleRate() != AAUDIO_UNSPECIFIED &&
167 configuration.getSampleRate() != getSampleRate()) {
168 return false;
169 }
170 if (configuration.getSamplesPerFrame() != AAUDIO_UNSPECIFIED &&
171 configuration.getSamplesPerFrame() != getSamplesPerFrame()) {
172 return false;
173 }
174 if (configuration.getChannelMask() != AAUDIO_UNSPECIFIED &&
175 configuration.getChannelMask() != getChannelMask()) {
176 return false;
177 }
178 return true;
179 }
180
181 // static
getAudioAttributesFrom(const AAudioStreamParameters * params)182 audio_attributes_t AAudioServiceEndpoint::getAudioAttributesFrom(
183 const AAudioStreamParameters *params) {
184 if (params == nullptr) {
185 return {};
186 }
187 const aaudio_direction_t direction = params->getDirection();
188
189 const audio_content_type_t contentType =
190 AAudioConvert_contentTypeToInternal(params->getContentType());
191 // Usage only used for OUTPUT
192 const audio_usage_t usage = (direction == AAUDIO_DIRECTION_OUTPUT)
193 ? AAudioConvert_usageToInternal(params->getUsage())
194 : AUDIO_USAGE_UNKNOWN;
195 const audio_source_t source = (direction == AAUDIO_DIRECTION_INPUT)
196 ? AAudioConvert_inputPresetToAudioSource(params->getInputPreset())
197 : AUDIO_SOURCE_DEFAULT;
198 audio_flags_mask_t flags;
199 std::string tags;
200 if (direction == AAUDIO_DIRECTION_OUTPUT) {
201 flags = AAudio_computeAudioFlagsMask(
202 params->getAllowedCapturePolicy(),
203 params->getSpatializationBehavior(),
204 params->isContentSpatialized(),
205 AUDIO_OUTPUT_FLAG_FAST);
206 tags = params->getTagsAsString();
207 } else {
208 flags = static_cast<audio_flags_mask_t>(AUDIO_FLAG_LOW_LATENCY
209 | AAudioConvert_privacySensitiveToAudioFlagsMask(params->isPrivacySensitive()));
210 }
211 audio_attributes_t nativeAttributes = {
212 .content_type = contentType,
213 .usage = usage,
214 .source = source,
215 .flags = flags,
216 .tags = ""
217 };
218 if (!tags.empty()) {
219 strncpy(nativeAttributes.tags, tags.c_str(), AUDIO_ATTRIBUTES_TAGS_MAX_SIZE);
220 nativeAttributes.tags[AUDIO_ATTRIBUTES_TAGS_MAX_SIZE - 1] = '\0';
221 }
222 return nativeAttributes;
223 }
224