APM: Create multiple MSD patches
This change modifies setMsdPatch() by first renaming to setMsdPatches()
and replaces its parameter with a pointer to DeviceVector, so that
multiple devices can be patched from MSD. If none are specified it will
establish MSD patches with all reported downstream output devices. It
tears down existing MSD patches and creates new ones for those MSD
patches that do not support new patch requests. We retain the existing
MSD patches that already support new patch requests.
In getBestMsdAudioProfileFor(), ensure output profiles considered for
evaluating the best matching audio profile is supported by the output
device under consideration.
Refactor by placing common code that tears down current MSD patches into
a new function called releaseMsdPatches().
When obtaining an output, getOutputForAttrInt() returns device ID of the
default device if its ID matches that of one of the output devices
provided by the engine.
Add testing for dual MSD patch creation by parameterizing existing MSD
tests for single and dual MSD patch cases. Add new unit test to exercise
setMsdPatches and releaseMsdPatches. Make private MSD module member
functions protected to enable testing.
Bug: 135620198
Test: audiopolicy_tests
Change-Id: I59a8976ce82dba04ca69347afc192e9143ef3629
diff --git a/services/audiopolicy/managerdefault/AudioPolicyManager.cpp b/services/audiopolicy/managerdefault/AudioPolicyManager.cpp
index c0a8f9d..e721a78 100644
--- a/services/audiopolicy/managerdefault/AudioPolicyManager.cpp
+++ b/services/audiopolicy/managerdefault/AudioPolicyManager.cpp
@@ -1064,8 +1064,7 @@
*output = AUDIO_IO_HANDLE_NONE;
if (!msdDevices.isEmpty()) {
*output = getOutputForDevices(msdDevices, session, *stream, config, flags);
- sp<DeviceDescriptor> device = outputDevices.isEmpty() ? nullptr : outputDevices.itemAt(0);
- if (*output != AUDIO_IO_HANDLE_NONE && setMsdPatch(device) == NO_ERROR) {
+ if (*output != AUDIO_IO_HANDLE_NONE && setMsdPatches(&outputDevices) == NO_ERROR) {
ALOGV("%s() Using MSD devices %s instead of devices %s",
__func__, msdDevices.toString().c_str(), outputDevices.toString().c_str());
} else {
@@ -1081,6 +1080,12 @@
}
*selectedDeviceId = getFirstDeviceId(outputDevices);
+ for (auto &outputDevice : outputDevices) {
+ if (outputDevice->getId() == getConfig().getDefaultOutputDevice()->getId()) {
+ *selectedDeviceId = outputDevice->getId();
+ break;
+ }
+ }
if (outputDevices.onlyContainsDevicesWithType(AUDIO_DEVICE_OUT_TELEPHONY_TX)) {
*outputType = API_OUTPUT_TELEPHONY_TX;
@@ -1223,24 +1228,9 @@
sp<SwAudioOutputDescriptor> outputDesc =
new SwAudioOutputDescriptor(profile, mpClientInterface);
- String8 address = getFirstDeviceAddress(devices);
-
- // MSD patch may be using the only output stream that can service this request. Release
- // MSD patch to prioritize this request over any active output on MSD.
- AudioPatchCollection msdPatches = getMsdPatches();
- for (size_t i = 0; i < msdPatches.size(); i++) {
- const auto& patch = msdPatches[i];
- for (size_t j = 0; j < patch->mPatch.num_sinks; ++j) {
- const struct audio_port_config *sink = &patch->mPatch.sinks[j];
- if (sink->type == AUDIO_PORT_TYPE_DEVICE &&
- devices.containsDeviceWithType(sink->ext.device.type) &&
- (address.isEmpty() || strncmp(sink->ext.device.address, address.string(),
- AUDIO_DEVICE_MAX_ADDRESS_LEN) == 0)) {
- releaseAudioPatch(patch->getHandle(), mUidCached);
- break;
- }
- }
- }
+ // An MSD patch may be using the only output stream that can service this request. Release
+ // all MSD patches to prioritize this request over any active output on MSD.
+ releaseMsdPatches(devices);
status_t status = outputDesc->open(config, devices, stream, flags, output);
@@ -1414,7 +1404,8 @@
}
AudioProfileVector deviceProfiles;
for (const auto &outProfile : outputProfiles) {
- if (hwAvSync == ((outProfile->getFlags() & AUDIO_OUTPUT_FLAG_HW_AV_SYNC) != 0)) {
+ if (hwAvSync == ((outProfile->getFlags() & AUDIO_OUTPUT_FLAG_HW_AV_SYNC) != 0) &&
+ outProfile->supportsDevice(outputDevice)) {
appendAudioProfiles(deviceProfiles, outProfile->getAudioProfiles());
}
}
@@ -1482,40 +1473,85 @@
return patchBuilder;
}
-status_t AudioPolicyManager::setMsdPatch(const sp<DeviceDescriptor> &outputDevice) {
- sp<DeviceDescriptor> device = outputDevice;
- if (device == nullptr) {
+status_t AudioPolicyManager::setMsdPatches(const DeviceVector *outputDevices) {
+ DeviceVector devices;
+ if (outputDevices != nullptr && outputDevices->size() > 0) {
+ devices.add(*outputDevices);
+ } else {
// Use media strategy for unspecified output device. This should only
// occur on checkForDeviceAndOutputChanges(). Device connection events may
// therefore invalidate explicit routing requests.
- DeviceVector devices = mEngine->getOutputDevicesForAttributes(
+ devices = mEngine->getOutputDevicesForAttributes(
attributes_initializer(AUDIO_USAGE_MEDIA), nullptr, false /*fromCache*/);
- LOG_ALWAYS_FATAL_IF(devices.isEmpty(), "no outpudevice to set Msd Patch");
- device = devices.itemAt(0);
+ LOG_ALWAYS_FATAL_IF(devices.isEmpty(), "no output device to set MSD patch");
}
- ALOGV("%s() for device %s", __func__, device->toString().c_str());
- PatchBuilder patchBuilder = buildMsdPatch(device);
- const struct audio_patch* patch = patchBuilder.patch();
- const AudioPatchCollection msdPatches = getMsdPatches();
- if (!msdPatches.isEmpty()) {
- LOG_ALWAYS_FATAL_IF(msdPatches.size() > 1,
- "The current MSD prototype only supports one output patch");
- sp<AudioPatch> currentPatch = msdPatches.valueAt(0);
- if (audio_patches_are_equal(¤tPatch->mPatch, patch)) {
- return NO_ERROR;
+ std::vector<PatchBuilder> patchesToCreate;
+ for (auto i = 0u; i < devices.size(); ++i) {
+ ALOGV("%s() for device %s", __func__, devices[i]->toString().c_str());
+ patchesToCreate.push_back(buildMsdPatch(devices[i]));
+ }
+ // Retain only the MSD patches associated with outputDevices request.
+ // Tear down the others, and create new ones as needed.
+ AudioPatchCollection patchesToRemove = getMsdPatches();
+ for (auto it = patchesToCreate.begin(); it != patchesToCreate.end(); ) {
+ auto retainedPatch = false;
+ for (auto i = 0u; i < patchesToRemove.size(); ++i) {
+ if (audio_patches_are_equal(it->patch(), &patchesToRemove[i]->mPatch)) {
+ patchesToRemove.removeItemsAt(i);
+ retainedPatch = true;
+ break;
+ }
}
+ if (retainedPatch) {
+ it = patchesToCreate.erase(it);
+ continue;
+ }
+ ++it;
+ }
+ if (patchesToCreate.size() == 0 && patchesToRemove.size() == 0) {
+ return NO_ERROR;
+ }
+ for (auto i = 0u; i < patchesToRemove.size(); ++i) {
+ auto ¤tPatch = patchesToRemove.valueAt(i);
releaseAudioPatch(currentPatch->getHandle(), mUidCached);
}
- status_t status = installPatch(__func__, -1 /*index*/, nullptr /*patchHandle*/,
- patch, 0 /*delayMs*/, mUidCached, nullptr /*patchDescPtr*/);
- ALOGE_IF(status != NO_ERROR, "%s() error %d creating MSD audio patch", __func__, status);
- ALOGI_IF(status == NO_ERROR, "%s() Patch created from MSD_IN to "
- "device:%s (format:%#x channels:%#x samplerate:%d)", __func__,
- device->toString().c_str(), patch->sources[0].format,
- patch->sources[0].channel_mask, patch->sources[0].sample_rate);
+ status_t status = NO_ERROR;
+ for (const auto &p : patchesToCreate) {
+ auto currStatus = installPatch(__func__, -1 /*index*/, nullptr /*patchHandle*/,
+ p.patch(), 0 /*delayMs*/, mUidCached, nullptr /*patchDescPtr*/);
+ char message[256];
+ snprintf(message, sizeof(message), "%s() %s: creating MSD patch from device:IN_BUS to "
+ "device:%#x (format:%#x channels:%#x samplerate:%d)", __func__,
+ currStatus == NO_ERROR ? "Success" : "Error",
+ p.patch()->sinks[0].ext.device.type, p.patch()->sources[0].format,
+ p.patch()->sources[0].channel_mask, p.patch()->sources[0].sample_rate);
+ if (currStatus == NO_ERROR) {
+ ALOGD("%s", message);
+ } else {
+ ALOGE("%s", message);
+ if (status == NO_ERROR) {
+ status = currStatus;
+ }
+ }
+ }
return status;
}
+void AudioPolicyManager::releaseMsdPatches(const DeviceVector& devices) {
+ AudioPatchCollection msdPatches = getMsdPatches();
+ for (size_t i = 0; i < msdPatches.size(); i++) {
+ const auto& patch = msdPatches[i];
+ for (size_t j = 0; j < patch->mPatch.num_sinks; ++j) {
+ const struct audio_port_config *sink = &patch->mPatch.sinks[j];
+ if (sink->type == AUDIO_PORT_TYPE_DEVICE && devices.getDevice(sink->ext.device.type,
+ String8(sink->ext.device.address), AUDIO_FORMAT_DEFAULT) != nullptr) {
+ releaseAudioPatch(patch->getHandle(), mUidCached);
+ break;
+ }
+ }
+ }
+}
+
audio_io_handle_t AudioPolicyManager::selectOutput(const SortedVector<audio_io_handle_t>& outputs,
audio_output_flags_t flags,
audio_format_t format,
@@ -5319,8 +5355,13 @@
}
}
if (!directOutputOpen) {
- ALOGV("no direct outputs open, reset MSD patch");
- setMsdPatch();
+ ALOGV("no direct outputs open, reset MSD patches");
+ // TODO: The MSD patches to be established here may differ to current MSD patches due to
+ // how output devices for patching are resolved. Avoid by caching and reusing the
+ // arguments to mEngine->getOutputDevicesForAttributes() when resolving which output
+ // devices to patch to. This may be complicated by the fact that devices may become
+ // unavailable.
+ setMsdPatches();
}
}
}
@@ -5387,7 +5428,13 @@
if (onOutputsChecked != nullptr && onOutputsChecked()) checkA2dpSuspend();
updateDevicesAndOutputs();
if (mHwModules.getModuleFromName(AUDIO_HARDWARE_MODULE_ID_MSD) != 0) {
- setMsdPatch();
+ // TODO: The MSD patches to be established here may differ to current MSD patches due to how
+ // output devices for patching are resolved. Nevertheless, AudioTracks affected by device
+ // configuration changes will ultimately be rerouted correctly. We can still avoid
+ // unnecessary rerouting by caching and reusing the arguments to
+ // mEngine->getOutputDevicesForAttributes() when resolving which output devices to patch to.
+ // This may be complicated by the fact that devices may become unavailable.
+ setMsdPatches();
}
// an event that changed routing likely occurred, inform upper layers
mpClientInterface->onRoutingUpdated();
diff --git a/services/audiopolicy/managerdefault/AudioPolicyManager.h b/services/audiopolicy/managerdefault/AudioPolicyManager.h
index 3c55b63..d3ceb1b 100644
--- a/services/audiopolicy/managerdefault/AudioPolicyManager.h
+++ b/services/audiopolicy/managerdefault/AudioPolicyManager.h
@@ -848,13 +848,6 @@
// end point.
audio_port_handle_t mCallRxSourceClientPort = AUDIO_PORT_HANDLE_NONE;
-private:
- void onNewAudioModulesAvailableInt(DeviceVector *newDevices);
-
- // Add or remove AC3 DTS encodings based on user preferences.
- void modifySurroundFormats(const sp<DeviceDescriptor>& devDesc, FormatVector *formatsPtr);
- void modifySurroundChannelMasks(ChannelMaskSet *channelMasksPtr);
-
// Support for Multi-Stream Decoder (MSD) module
sp<DeviceDescriptor> getMsdAudioInDevice() const;
DeviceVector getMsdAudioOutDevices() const;
@@ -864,7 +857,14 @@
audio_port_config *sourceConfig,
audio_port_config *sinkConfig) const;
PatchBuilder buildMsdPatch(const sp<DeviceDescriptor> &outputDevice) const;
- status_t setMsdPatch(const sp<DeviceDescriptor> &outputDevice = nullptr);
+ status_t setMsdPatches(const DeviceVector *outputDevices = nullptr);
+ void releaseMsdPatches(const DeviceVector& devices);
+private:
+ void onNewAudioModulesAvailableInt(DeviceVector *newDevices);
+
+ // Add or remove AC3 DTS encodings based on user preferences.
+ void modifySurroundFormats(const sp<DeviceDescriptor>& devDesc, FormatVector *formatsPtr);
+ void modifySurroundChannelMasks(ChannelMaskSet *channelMasksPtr);
// If any, resolve any "dynamic" fields of an Audio Profiles collection
void updateAudioProfiles(const sp<DeviceDescriptor>& devDesc, audio_io_handle_t ioHandle,