Merge "APM: Create multiple MSD patches"
diff --git a/services/audiopolicy/managerdefault/AudioPolicyManager.cpp b/services/audiopolicy/managerdefault/AudioPolicyManager.cpp
index 7179355..e1d806d 100644
--- a/services/audiopolicy/managerdefault/AudioPolicyManager.cpp
+++ b/services/audiopolicy/managerdefault/AudioPolicyManager.cpp
@@ -1037,8 +1037,7 @@
*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 {
@@ -1054,6 +1053,12 @@
}
*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;
@@ -1196,24 +1201,9 @@
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);
@@ -1386,7 +1376,8 @@
}
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());
}
}
@@ -1454,40 +1445,85 @@
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,
@@ -5309,8 +5345,13 @@
}
}
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();
}
}
}
@@ -5377,7 +5418,13 @@
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();
}
}
diff --git a/services/audiopolicy/managerdefault/AudioPolicyManager.h b/services/audiopolicy/managerdefault/AudioPolicyManager.h
index 33639cd..c1c483c 100644
--- a/services/audiopolicy/managerdefault/AudioPolicyManager.h
+++ b/services/audiopolicy/managerdefault/AudioPolicyManager.h
@@ -844,13 +844,6 @@
// 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;
@@ -860,7 +853,14 @@
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,
diff --git a/services/audiopolicy/tests/AudioPolicyTestManager.h b/services/audiopolicy/tests/AudioPolicyTestManager.h
index 8bab020..c096427 100644
--- a/services/audiopolicy/tests/AudioPolicyTestManager.h
+++ b/services/audiopolicy/tests/AudioPolicyTestManager.h
@@ -29,6 +29,8 @@
using AudioPolicyManager::getOutputs;
using AudioPolicyManager::getAvailableOutputDevices;
using AudioPolicyManager::getAvailableInputDevices;
+ using AudioPolicyManager::releaseMsdPatches;
+ using AudioPolicyManager::setMsdPatches;
uint32_t getAudioPortGeneration() const { return mAudioPortGeneration; }
};
diff --git a/services/audiopolicy/tests/audiopolicymanager_tests.cpp b/services/audiopolicy/tests/audiopolicymanager_tests.cpp
index d379239..f391606 100644
--- a/services/audiopolicy/tests/audiopolicymanager_tests.cpp
+++ b/services/audiopolicy/tests/audiopolicymanager_tests.cpp
@@ -319,7 +319,17 @@
// TODO: Add patch creation tests that involve already existing patch
-class AudioPolicyManagerTestMsd : public AudioPolicyManagerTest {
+enum
+{
+ MSD_AUDIO_PATCH_COUNT_NUM_AUDIO_PATCHES_INDEX = 0,
+ MSD_AUDIO_PATCH_COUNT_NAME_INDEX = 1
+};
+using MsdAudioPatchCountSpecification = std::tuple<size_t, std::string>;
+
+class AudioPolicyManagerTestMsd : public AudioPolicyManagerTest,
+ public ::testing::WithParamInterface<MsdAudioPatchCountSpecification> {
+ public:
+ AudioPolicyManagerTestMsd();
protected:
void SetUpManagerConfig() override;
void TearDown() override;
@@ -327,8 +337,26 @@
sp<DeviceDescriptor> mMsdOutputDevice;
sp<DeviceDescriptor> mMsdInputDevice;
sp<DeviceDescriptor> mDefaultOutputDevice;
+
+ const size_t mExpectedAudioPatchCount;
+ sp<DeviceDescriptor> mSpdifDevice;
};
+AudioPolicyManagerTestMsd::AudioPolicyManagerTestMsd()
+ : mExpectedAudioPatchCount(std::get<MSD_AUDIO_PATCH_COUNT_NUM_AUDIO_PATCHES_INDEX>(
+ GetParam())) {}
+
+INSTANTIATE_TEST_CASE_P(
+ MsdAudioPatchCount,
+ AudioPolicyManagerTestMsd,
+ ::testing::Values(
+ MsdAudioPatchCountSpecification(1u, "single"),
+ MsdAudioPatchCountSpecification(2u, "dual")
+ ),
+ [](const ::testing::TestParamInfo<MsdAudioPatchCountSpecification> &info) {
+ return std::get<MSD_AUDIO_PATCH_COUNT_NAME_INDEX>(info.param); }
+);
+
void AudioPolicyManagerTestMsd::SetUpManagerConfig() {
// TODO: Consider using Serializer to load part of the config from a string.
AudioPolicyManagerTest::SetUpManagerConfig();
@@ -348,6 +376,19 @@
config.addDevice(mMsdOutputDevice);
config.addDevice(mMsdInputDevice);
+ if (mExpectedAudioPatchCount == 2) {
+ // Add SPDIF device with PCM output profile as a second device for dual MSD audio patching.
+ mSpdifDevice = new DeviceDescriptor(AUDIO_DEVICE_OUT_SPDIF);
+ mSpdifDevice->addAudioProfile(pcmOutputProfile);
+ config.addDevice(mSpdifDevice);
+
+ sp<OutputProfile> spdifOutputProfile = new OutputProfile("spdif output");
+ spdifOutputProfile->addAudioProfile(pcmOutputProfile);
+ spdifOutputProfile->addSupportedDevice(mSpdifDevice);
+ config.getHwModules().getModuleFromName(AUDIO_HARDWARE_MODULE_ID_PRIMARY)->
+ addOutputProfile(spdifOutputProfile);
+ }
+
sp<HwModule> msdModule = new HwModule(AUDIO_HARDWARE_MODULE_ID_MSD, 2 /*halVersionMajor*/);
HwModuleCollection modules = config.getHwModules();
modules.add(msdModule);
@@ -383,64 +424,88 @@
addOutputProfile(primaryEncodedOutputProfile);
mDefaultOutputDevice = config.getDefaultOutputDevice();
+ if (mExpectedAudioPatchCount == 2) {
+ mSpdifDevice->addAudioProfile(dtsOutputProfile);
+ primaryEncodedOutputProfile->addSupportedDevice(mSpdifDevice);
+ }
}
void AudioPolicyManagerTestMsd::TearDown() {
mMsdOutputDevice.clear();
mMsdInputDevice.clear();
mDefaultOutputDevice.clear();
+ mSpdifDevice.clear();
AudioPolicyManagerTest::TearDown();
}
-TEST_F(AudioPolicyManagerTestMsd, InitSuccess) {
+TEST_P(AudioPolicyManagerTestMsd, InitSuccess) {
ASSERT_TRUE(mMsdOutputDevice);
ASSERT_TRUE(mMsdInputDevice);
ASSERT_TRUE(mDefaultOutputDevice);
}
-TEST_F(AudioPolicyManagerTestMsd, Dump) {
+TEST_P(AudioPolicyManagerTestMsd, Dump) {
dumpToLog();
}
-TEST_F(AudioPolicyManagerTestMsd, PatchCreationOnSetForceUse) {
+TEST_P(AudioPolicyManagerTestMsd, PatchCreationOnSetForceUse) {
const PatchCountCheck patchCount = snapshotPatchCount();
mManager->setForceUse(AUDIO_POLICY_FORCE_FOR_ENCODED_SURROUND,
AUDIO_POLICY_FORCE_ENCODED_SURROUND_ALWAYS);
- ASSERT_EQ(1, patchCount.deltaFromSnapshot());
+ ASSERT_EQ(mExpectedAudioPatchCount, patchCount.deltaFromSnapshot());
}
-TEST_F(AudioPolicyManagerTestMsd, GetOutputForAttrEncodedRoutesToMsd) {
+TEST_P(AudioPolicyManagerTestMsd, PatchCreationSetReleaseMsdPatches) {
+ const PatchCountCheck patchCount = snapshotPatchCount();
+ DeviceVector devices = mManager->getAvailableOutputDevices();
+ // Remove MSD output device to avoid patching to itself
+ devices.remove(mMsdOutputDevice);
+ ASSERT_EQ(mExpectedAudioPatchCount, devices.size());
+ mManager->setMsdPatches(&devices);
+ ASSERT_EQ(mExpectedAudioPatchCount, patchCount.deltaFromSnapshot());
+ // Dual patch: exercise creating one new audio patch and reusing another existing audio patch.
+ DeviceVector singleDevice(devices[0]);
+ mManager->releaseMsdPatches(singleDevice);
+ ASSERT_EQ(mExpectedAudioPatchCount - 1, patchCount.deltaFromSnapshot());
+ mManager->setMsdPatches(&devices);
+ ASSERT_EQ(mExpectedAudioPatchCount, patchCount.deltaFromSnapshot());
+ mManager->releaseMsdPatches(devices);
+ ASSERT_EQ(0, patchCount.deltaFromSnapshot());
+}
+
+TEST_P(AudioPolicyManagerTestMsd, GetOutputForAttrEncodedRoutesToMsd) {
const PatchCountCheck patchCount = snapshotPatchCount();
audio_port_handle_t selectedDeviceId = AUDIO_PORT_HANDLE_NONE;
getOutputForAttr(&selectedDeviceId,
AUDIO_FORMAT_AC3, AUDIO_CHANNEL_OUT_5POINT1, 48000, AUDIO_OUTPUT_FLAG_DIRECT);
ASSERT_EQ(selectedDeviceId, mDefaultOutputDevice->getId());
- ASSERT_EQ(1, patchCount.deltaFromSnapshot());
+ ASSERT_EQ(mExpectedAudioPatchCount, patchCount.deltaFromSnapshot());
}
-TEST_F(AudioPolicyManagerTestMsd, GetOutputForAttrPcmRoutesToMsd) {
+TEST_P(AudioPolicyManagerTestMsd, GetOutputForAttrPcmRoutesToMsd) {
const PatchCountCheck patchCount = snapshotPatchCount();
audio_port_handle_t selectedDeviceId = AUDIO_PORT_HANDLE_NONE;
getOutputForAttr(&selectedDeviceId,
AUDIO_FORMAT_PCM_16_BIT, AUDIO_CHANNEL_OUT_STEREO, 48000);
ASSERT_EQ(selectedDeviceId, mDefaultOutputDevice->getId());
- ASSERT_EQ(1, patchCount.deltaFromSnapshot());
+ ASSERT_EQ(mExpectedAudioPatchCount, patchCount.deltaFromSnapshot());
}
-TEST_F(AudioPolicyManagerTestMsd, GetOutputForAttrEncodedPlusPcmRoutesToMsd) {
+TEST_P(AudioPolicyManagerTestMsd, GetOutputForAttrEncodedPlusPcmRoutesToMsd) {
const PatchCountCheck patchCount = snapshotPatchCount();
audio_port_handle_t selectedDeviceId = AUDIO_PORT_HANDLE_NONE;
getOutputForAttr(&selectedDeviceId,
AUDIO_FORMAT_AC3, AUDIO_CHANNEL_OUT_5POINT1, 48000, AUDIO_OUTPUT_FLAG_DIRECT);
ASSERT_EQ(selectedDeviceId, mDefaultOutputDevice->getId());
- ASSERT_EQ(1, patchCount.deltaFromSnapshot());
+ ASSERT_EQ(mExpectedAudioPatchCount, patchCount.deltaFromSnapshot());
+ selectedDeviceId = AUDIO_PORT_HANDLE_NONE;
getOutputForAttr(&selectedDeviceId,
AUDIO_FORMAT_PCM_16_BIT, AUDIO_CHANNEL_OUT_STEREO, 48000);
ASSERT_EQ(selectedDeviceId, mDefaultOutputDevice->getId());
- ASSERT_EQ(1, patchCount.deltaFromSnapshot());
+ ASSERT_EQ(mExpectedAudioPatchCount, patchCount.deltaFromSnapshot());
}
-TEST_F(AudioPolicyManagerTestMsd, GetOutputForAttrUnsupportedFormatBypassesMsd) {
+TEST_P(AudioPolicyManagerTestMsd, GetOutputForAttrUnsupportedFormatBypassesMsd) {
const PatchCountCheck patchCount = snapshotPatchCount();
audio_port_handle_t selectedDeviceId = AUDIO_PORT_HANDLE_NONE;
getOutputForAttr(&selectedDeviceId,
@@ -449,7 +514,7 @@
ASSERT_EQ(0, patchCount.deltaFromSnapshot());
}
-TEST_F(AudioPolicyManagerTestMsd, GetOutputForAttrFormatSwitching) {
+TEST_P(AudioPolicyManagerTestMsd, GetOutputForAttrFormatSwitching) {
// Switch between formats that are supported and not supported by MSD.
{
const PatchCountCheck patchCount = snapshotPatchCount();
@@ -459,9 +524,9 @@
AUDIO_FORMAT_AC3, AUDIO_CHANNEL_OUT_5POINT1, 48000, AUDIO_OUTPUT_FLAG_DIRECT,
nullptr /*output*/, &portId);
ASSERT_EQ(selectedDeviceId, mDefaultOutputDevice->getId());
- ASSERT_EQ(1, patchCount.deltaFromSnapshot());
+ ASSERT_EQ(mExpectedAudioPatchCount, patchCount.deltaFromSnapshot());
mManager->releaseOutput(portId);
- ASSERT_EQ(1, patchCount.deltaFromSnapshot());
+ ASSERT_EQ(mExpectedAudioPatchCount, patchCount.deltaFromSnapshot());
}
{
const PatchCountCheck patchCount = snapshotPatchCount();
@@ -471,7 +536,7 @@
AUDIO_FORMAT_DTS, AUDIO_CHANNEL_OUT_5POINT1, 48000, AUDIO_OUTPUT_FLAG_DIRECT,
nullptr /*output*/, &portId);
ASSERT_NE(selectedDeviceId, mMsdOutputDevice->getId());
- ASSERT_EQ(-1, patchCount.deltaFromSnapshot());
+ ASSERT_EQ(-static_cast<int>(mExpectedAudioPatchCount), patchCount.deltaFromSnapshot());
mManager->releaseOutput(portId);
ASSERT_EQ(0, patchCount.deltaFromSnapshot());
}