audio policy: optimize muting when evaluation strategy routing
Modify AudioPolicyManager::checkOutputForAttributes() to only mute
rerouted strategies on affected outputs.
Bug: 227256896
Test: make
Change-Id: Ie56be4e1b7cfe8d4663c054020ef7105db410724
diff --git a/services/audiopolicy/managerdefault/AudioPolicyManager.cpp b/services/audiopolicy/managerdefault/AudioPolicyManager.cpp
index 31dabd9..fcf5e7f 100644
--- a/services/audiopolicy/managerdefault/AudioPolicyManager.cpp
+++ b/services/audiopolicy/managerdefault/AudioPolicyManager.cpp
@@ -6343,10 +6343,10 @@
SortedVector<audio_io_handle_t> dstOutputs = getOutputsForDevices(newDevices, mOutputs);
uint32_t maxLatency = 0;
- bool invalidate = false;
+ std::vector<sp<SwAudioOutputDescriptor>> invalidatedOutputs;
// take into account dynamic audio policies related changes: if a client is now associated
// to a different policy mix than at creation time, invalidate corresponding stream
- for (size_t i = 0; i < mPreviousOutputs.size() && !invalidate; i++) {
+ for (size_t i = 0; i < mPreviousOutputs.size(); i++) {
const sp<SwAudioOutputDescriptor>& desc = mPreviousOutputs.valueAt(i);
if (desc->isDuplicated()) {
continue;
@@ -6362,16 +6362,15 @@
continue;
}
if (client->getPrimaryMix() != primaryMix || client->hasLostPrimaryMix()) {
- invalidate = true;
- if (desc->isStrategyActive(psId)) {
+ if (desc->isStrategyActive(psId) && maxLatency < desc->latency()) {
maxLatency = desc->latency();
}
- break;
+ invalidatedOutputs.push_back(desc);
}
}
}
- if (srcOutputs != dstOutputs || invalidate) {
+ if (srcOutputs != dstOutputs || !invalidatedOutputs.empty()) {
// get maximum latency of all source outputs to determine the minimum mute time guaranteeing
// audio from invalidated tracks will be rendered when unmuting
for (audio_io_handle_t srcOut : srcOutputs) {
@@ -6382,8 +6381,7 @@
maxLatency = desc->latency();
}
- if (invalidate) continue;
-
+ bool invalidate = false;
for (auto client : desc->clientsList(false /*activeOnly*/)) {
if (desc->isDuplicated() || !desc->mProfile->isDirectOutput()) {
// a client on a non direct outputs has necessarily a linear PCM format
@@ -6411,21 +6409,14 @@
}
}
}
- }
-
- ALOGV_IF(!(srcOutputs.isEmpty() || dstOutputs.isEmpty()),
- "%s: strategy %d, moving from output %s to output %s", __func__, psId,
- std::to_string(srcOutputs[0]).c_str(),
- std::to_string(dstOutputs[0]).c_str());
- // mute strategy while moving tracks from one output to another
- for (audio_io_handle_t srcOut : srcOutputs) {
- sp<SwAudioOutputDescriptor> desc = mPreviousOutputs.valueFor(srcOut);
- if (desc == nullptr) continue;
-
- if (desc->isStrategyActive(psId)) {
- setStrategyMute(psId, true, desc);
- setStrategyMute(psId, false, desc, maxLatency * LATENCY_MUTE_FACTOR,
- newDevices.types());
+ // mute strategy while moving tracks from one output to another
+ if (invalidate) {
+ invalidatedOutputs.push_back(desc);
+ if (desc->isStrategyActive(psId)) {
+ setStrategyMute(psId, true, desc);
+ setStrategyMute(psId, false, desc, maxLatency * LATENCY_MUTE_FACTOR,
+ newDevices.types());
+ }
}
sp<SourceClientDescriptor> source = getSourceForAttributesOnOutput(srcOut, attr);
if (source != nullptr && !isCallRxAudioSource(source) && !source->isInternal()) {
@@ -6433,19 +6424,21 @@
}
}
+ ALOGV_IF(!(srcOutputs.isEmpty() || dstOutputs.isEmpty()),
+ "%s: strategy %d, moving from output %s to output %s", __func__, psId,
+ std::to_string(srcOutputs[0]).c_str(),
+ std::to_string(dstOutputs[0]).c_str());
+
// Move effects associated to this stream from previous output to new output
if (followsSameRouting(attr, attributes_initializer(AUDIO_USAGE_MEDIA))) {
selectOutputForMusicEffects();
}
// Move tracks associated to this stream (and linked) from previous output to new output
- if (invalidate) {
+ if (!invalidatedOutputs.empty()) {
for (auto stream : mEngine->getStreamTypesForProductStrategy(psId)) {
mpClientInterface->invalidateStream(stream);
}
- for (audio_io_handle_t srcOut : srcOutputs) {
- sp<SwAudioOutputDescriptor> desc = mPreviousOutputs.valueFor(srcOut);
- if (desc == nullptr) continue;
-
+ for (sp<SwAudioOutputDescriptor> desc : invalidatedOutputs) {
desc->setTracksInvalidatedStatusByStrategy(psId);
}
}
