diff --git a/audio/aidl/default/Module.cpp b/audio/aidl/default/Module.cpp
index e8b5bfc..780d6a9 100644
--- a/audio/aidl/default/Module.cpp
+++ b/audio/aidl/default/Module.cpp
@@ -46,6 +46,7 @@
 using aidl::android::media::audio::common::AudioPortConfig;
 using aidl::android::media::audio::common::AudioPortExt;
 using aidl::android::media::audio::common::AudioProfile;
+using aidl::android::media::audio::common::Boolean;
 using aidl::android::media::audio::common::Int;
 using aidl::android::media::audio::common::PcmType;
 using android::hardware::audio::common::getFrameSizeInBytes;
@@ -138,12 +139,14 @@
         (flags.getTag() == AudioIoFlags::Tag::output &&
          !isBitPositionFlagSet(flags.get<AudioIoFlags::Tag::output>(),
                                AudioOutputFlags::MMAP_NOIRQ))) {
+        StreamContext::DebugParameters params{mDebug.streamTransientStateDelayMs,
+                                              mVendorDebug.forceTransientBurst};
         StreamContext temp(
                 std::make_unique<StreamContext::CommandMQ>(1, true /*configureEventFlagWord*/),
                 std::make_unique<StreamContext::ReplyMQ>(1, true /*configureEventFlagWord*/),
                 portConfigIt->format.value(), portConfigIt->channelMask.value(),
                 std::make_unique<StreamContext::DataMQ>(frameSize * in_bufferSizeFrames),
-                asyncCallback, mDebug.streamTransientStateDelayMs);
+                asyncCallback, params);
         if (temp.isValid()) {
             *out_context = std::move(temp);
         } else {
@@ -976,18 +979,49 @@
     return ndk::ScopedAStatus::fromExceptionCode(EX_UNSUPPORTED_OPERATION);
 }
 
+const std::string Module::VendorDebug::kForceTransientBurstName = "aosp.forceTransientBurst";
+
 ndk::ScopedAStatus Module::getVendorParameters(const std::vector<std::string>& in_ids,
                                                std::vector<VendorParameter>* _aidl_return) {
     LOG(DEBUG) << __func__ << ": id count: " << in_ids.size();
-    (void)_aidl_return;
-    return ndk::ScopedAStatus::fromExceptionCode(EX_UNSUPPORTED_OPERATION);
+    bool allParametersKnown = true;
+    for (const auto& id : in_ids) {
+        if (id == VendorDebug::kForceTransientBurstName) {
+            VendorParameter forceTransientBurst{.id = id};
+            forceTransientBurst.ext.setParcelable(Boolean{mVendorDebug.forceTransientBurst});
+            _aidl_return->push_back(std::move(forceTransientBurst));
+        } else {
+            allParametersKnown = false;
+            LOG(ERROR) << __func__ << ": unrecognized parameter \"" << id << "\"";
+        }
+    }
+    if (allParametersKnown) return ndk::ScopedAStatus::ok();
+    return ndk::ScopedAStatus::fromExceptionCode(EX_ILLEGAL_ARGUMENT);
 }
 
 ndk::ScopedAStatus Module::setVendorParameters(const std::vector<VendorParameter>& in_parameters,
                                                bool in_async) {
     LOG(DEBUG) << __func__ << ": parameter count " << in_parameters.size()
                << ", async: " << in_async;
-    return ndk::ScopedAStatus::fromExceptionCode(EX_UNSUPPORTED_OPERATION);
+    bool allParametersKnown = true;
+    for (const auto& p : in_parameters) {
+        if (p.id == VendorDebug::kForceTransientBurstName) {
+            std::optional<Boolean> value;
+            binder_status_t result = p.ext.getParcelable(&value);
+            if (result == STATUS_OK) {
+                mVendorDebug.forceTransientBurst = value.value().value;
+            } else {
+                LOG(ERROR) << __func__ << ": failed to read the value of the parameter \"" << p.id
+                           << "\"";
+                return ndk::ScopedAStatus::fromExceptionCode(EX_ILLEGAL_ARGUMENT);
+            }
+        } else {
+            allParametersKnown = false;
+            LOG(ERROR) << __func__ << ": unrecognized parameter \"" << p.id << "\"";
+        }
+    }
+    if (allParametersKnown) return ndk::ScopedAStatus::ok();
+    return ndk::ScopedAStatus::fromExceptionCode(EX_ILLEGAL_ARGUMENT);
 }
 
 ndk::ScopedAStatus Module::addDeviceEffect(
diff --git a/audio/aidl/default/Stream.cpp b/audio/aidl/default/Stream.cpp
index a490a2a..9be8896 100644
--- a/audio/aidl/default/Stream.cpp
+++ b/audio/aidl/default/Stream.cpp
@@ -467,14 +467,19 @@
 
 bool StreamOutWorkerLogic::write(size_t clientSize, StreamDescriptor::Reply* reply) {
     const size_t readByteCount = mDataMQ->availableToRead();
-    // Amount of data that the HAL module is going to actually use.
-    const size_t byteCount = std::min({clientSize, readByteCount, mDataBufferSize});
     bool fatal = false;
     if (bool success = readByteCount > 0 ? mDataMQ->read(&mDataBuffer[0], readByteCount) : true) {
         const bool isConnected = mIsConnected;
         LOG(DEBUG) << __func__ << ": reading of " << readByteCount << " bytes from data MQ"
                    << " succeeded; connected? " << isConnected;
-        // Frames are consumed and counted regardless of connection status.
+        // Amount of data that the HAL module is going to actually use.
+        size_t byteCount = std::min({clientSize, readByteCount, mDataBufferSize});
+        if (byteCount >= mFrameSize && mForceTransientBurst) {
+            // In order to prevent the state machine from going to ACTIVE state,
+            // simulate partial write.
+            byteCount -= mFrameSize;
+        }
+        // Frames are consumed and counted regardless of the connection status.
         reply->fmqByteCount += byteCount;
         mFrameCount += byteCount / mFrameSize;
         populateReply(reply, isConnected);
diff --git a/audio/aidl/default/include/core-impl/Module.h b/audio/aidl/default/include/core-impl/Module.h
index e9f43d8..9c95ea8 100644
--- a/audio/aidl/default/include/core-impl/Module.h
+++ b/audio/aidl/default/include/core-impl/Module.h
@@ -36,6 +36,11 @@
     explicit Module(Type type) : mType(type) {}
 
   private:
+    struct VendorDebug {
+        static const std::string kForceTransientBurstName;
+        bool forceTransientBurst = false;
+    };
+
     ndk::ScopedAStatus setModuleDebug(
             const ::aidl::android::hardware::audio::core::ModuleDebug& in_debug) override;
     ndk::ScopedAStatus getTelephony(std::shared_ptr<ITelephony>* _aidl_return) override;
@@ -128,6 +133,7 @@
     const Type mType;
     std::unique_ptr<internal::Configuration> mConfig;
     ModuleDebug mDebug;
+    VendorDebug mVendorDebug;
     // For the interfaces requiring to return the same instance, we need to hold them
     // via a strong pointer. The binder token is retained for a call to 'setMinSchedulerPolicy'.
     std::shared_ptr<ITelephony> mTelephony;
diff --git a/audio/aidl/default/include/core-impl/Stream.h b/audio/aidl/default/include/core-impl/Stream.h
index 5abd4de..29c1e2e 100644
--- a/audio/aidl/default/include/core-impl/Stream.h
+++ b/audio/aidl/default/include/core-impl/Stream.h
@@ -62,12 +62,19 @@
     // Ensure that this value is not used by any of StreamDescriptor.State enums
     static constexpr int32_t STATE_CLOSED = -1;
 
+    struct DebugParameters {
+        // An extra delay for transient states, in ms.
+        int transientStateDelayMs = 0;
+        // Force the "burst" command to move the SM to the TRANSFERRING state.
+        bool forceTransientBurst = false;
+    };
+
     StreamContext() = default;
     StreamContext(std::unique_ptr<CommandMQ> commandMQ, std::unique_ptr<ReplyMQ> replyMQ,
                   const ::aidl::android::media::audio::common::AudioFormatDescription& format,
                   const ::aidl::android::media::audio::common::AudioChannelLayout& channelLayout,
                   std::unique_ptr<DataMQ> dataMQ, std::shared_ptr<IStreamCallback> asyncCallback,
-                  int transientStateDelayMs)
+                  DebugParameters debugParameters)
         : mCommandMQ(std::move(commandMQ)),
           mInternalCommandCookie(std::rand()),
           mReplyMQ(std::move(replyMQ)),
@@ -75,7 +82,7 @@
           mChannelLayout(channelLayout),
           mDataMQ(std::move(dataMQ)),
           mAsyncCallback(asyncCallback),
-          mTransientStateDelayMs(transientStateDelayMs) {}
+          mDebugParameters(debugParameters) {}
     StreamContext(StreamContext&& other)
         : mCommandMQ(std::move(other.mCommandMQ)),
           mInternalCommandCookie(other.mInternalCommandCookie),
@@ -83,8 +90,8 @@
           mFormat(other.mFormat),
           mChannelLayout(other.mChannelLayout),
           mDataMQ(std::move(other.mDataMQ)),
-          mAsyncCallback(other.mAsyncCallback),
-          mTransientStateDelayMs(other.mTransientStateDelayMs) {}
+          mAsyncCallback(std::move(other.mAsyncCallback)),
+          mDebugParameters(std::move(other.mDebugParameters)) {}
     StreamContext& operator=(StreamContext&& other) {
         mCommandMQ = std::move(other.mCommandMQ);
         mInternalCommandCookie = other.mInternalCommandCookie;
@@ -92,8 +99,8 @@
         mFormat = std::move(other.mFormat);
         mChannelLayout = std::move(other.mChannelLayout);
         mDataMQ = std::move(other.mDataMQ);
-        mAsyncCallback = other.mAsyncCallback;
-        mTransientStateDelayMs = other.mTransientStateDelayMs;
+        mAsyncCallback = std::move(other.mAsyncCallback);
+        mDebugParameters = std::move(other.mDebugParameters);
         return *this;
     }
 
@@ -107,10 +114,11 @@
     ::aidl::android::media::audio::common::AudioFormatDescription getFormat() const {
         return mFormat;
     }
+    bool getForceTransientBurst() const { return mDebugParameters.forceTransientBurst; }
     size_t getFrameSize() const;
     int getInternalCommandCookie() const { return mInternalCommandCookie; }
     ReplyMQ* getReplyMQ() const { return mReplyMQ.get(); }
-    int getTransientStateDelayMs() const { return mTransientStateDelayMs; }
+    int getTransientStateDelayMs() const { return mDebugParameters.transientStateDelayMs; }
     bool isValid() const;
     void reset();
 
@@ -122,7 +130,7 @@
     ::aidl::android::media::audio::common::AudioChannelLayout mChannelLayout;
     std::unique_ptr<DataMQ> mDataMQ;
     std::shared_ptr<IStreamCallback> mAsyncCallback;
-    int mTransientStateDelayMs;
+    DebugParameters mDebugParameters;
 };
 
 class StreamWorkerCommonLogic : public ::android::hardware::audio::common::StreamLogic {
@@ -141,7 +149,8 @@
           mReplyMQ(context.getReplyMQ()),
           mDataMQ(context.getDataMQ()),
           mAsyncCallback(context.getAsyncCallback()),
-          mTransientStateDelayMs(context.getTransientStateDelayMs()) {}
+          mTransientStateDelayMs(context.getTransientStateDelayMs()),
+          mForceTransientBurst(context.getForceTransientBurst()) {}
     std::string init() override;
     void populateReply(StreamDescriptor::Reply* reply, bool isConnected) const;
     void populateReplyWrongState(StreamDescriptor::Reply* reply,
@@ -164,6 +173,7 @@
     std::shared_ptr<IStreamCallback> mAsyncCallback;
     const std::chrono::duration<int, std::milli> mTransientStateDelayMs;
     std::chrono::time_point<std::chrono::steady_clock> mTransientStateStart;
+    const bool mForceTransientBurst;
     // We use an array and the "size" field instead of a vector to be able to detect
     // memory allocation issues.
     std::unique_ptr<int8_t[]> mDataBuffer;
diff --git a/audio/aidl/vts/VtsHalAudioCoreModuleTargetTest.cpp b/audio/aidl/vts/VtsHalAudioCoreModuleTargetTest.cpp
index b676764..58e5cde 100644
--- a/audio/aidl/vts/VtsHalAudioCoreModuleTargetTest.cpp
+++ b/audio/aidl/vts/VtsHalAudioCoreModuleTargetTest.cpp
@@ -86,6 +86,7 @@
 using aidl::android::media::audio::common::AudioPortExt;
 using aidl::android::media::audio::common::AudioSource;
 using aidl::android::media::audio::common::AudioUsage;
+using aidl::android::media::audio::common::Boolean;
 using aidl::android::media::audio::common::Float;
 using aidl::android::media::audio::common::Int;
 using aidl::android::media::audio::common::Void;
@@ -127,7 +128,7 @@
         return WithDebugFlags(parent.mFlags);
     }
 
-    WithDebugFlags() {}
+    WithDebugFlags() = default;
     explicit WithDebugFlags(const ModuleDebug& initial) : mInitial(initial), mFlags(initial) {}
     WithDebugFlags(const WithDebugFlags&) = delete;
     WithDebugFlags& operator=(const WithDebugFlags&) = delete;
@@ -136,7 +137,10 @@
             EXPECT_IS_OK(mModule->setModuleDebug(mInitial));
         }
     }
-    void SetUp(IModule* module) { ASSERT_IS_OK(module->setModuleDebug(mFlags)); }
+    void SetUp(IModule* module) {
+        ASSERT_IS_OK(module->setModuleDebug(mFlags));
+        mModule = module;
+    }
     ModuleDebug& flags() { return mFlags; }
 
   private:
@@ -145,13 +149,65 @@
     IModule* mModule = nullptr;
 };
 
+template <typename T>
+class WithModuleParameter {
+  public:
+    WithModuleParameter(const std::string parameterId, const T& value)
+        : mParameterId(parameterId), mValue(value) {}
+    WithModuleParameter(const WithModuleParameter&) = delete;
+    WithModuleParameter& operator=(const WithModuleParameter&) = delete;
+    ~WithModuleParameter() {
+        if (mModule != nullptr) {
+            VendorParameter parameter{.id = mParameterId};
+            parameter.ext.setParcelable(mInitial);
+            EXPECT_IS_OK(mModule->setVendorParameters({parameter}, false));
+        }
+    }
+    ScopedAStatus SetUpNoChecks(IModule* module, bool failureExpected) {
+        std::vector<VendorParameter> parameters;
+        ScopedAStatus result = module->getVendorParameters({mParameterId}, &parameters);
+        if (result.isOk() && parameters.size() == 1) {
+            std::optional<T> maybeInitial;
+            binder_status_t status = parameters[0].ext.getParcelable(&maybeInitial);
+            if (status == STATUS_OK && maybeInitial.has_value()) {
+                mInitial = maybeInitial.value();
+                VendorParameter parameter{.id = mParameterId};
+                parameter.ext.setParcelable(mValue);
+                result = module->setVendorParameters({parameter}, false);
+                if (result.isOk()) {
+                    LOG(INFO) << __func__ << ": overriding parameter \"" << mParameterId
+                              << "\" with " << mValue.toString()
+                              << ", old value: " << mInitial.toString();
+                    mModule = module;
+                }
+            } else {
+                LOG(ERROR) << __func__ << ": error while retrieving the value of \"" << mParameterId
+                           << "\"";
+                return ScopedAStatus::fromStatus(status);
+            }
+        }
+        if (!result.isOk()) {
+            LOG(failureExpected ? INFO : ERROR)
+                    << __func__ << ": can not override vendor parameter \"" << mParameterId << "\""
+                    << result;
+        }
+        return result;
+    }
+
+  private:
+    const std::string mParameterId;
+    const T mValue;
+    IModule* mModule = nullptr;
+    T mInitial;
+};
+
 // For consistency, WithAudioPortConfig can start both with a non-existent
 // port config, and with an existing one. Existence is determined by the
 // id of the provided config. If it's not 0, then WithAudioPortConfig is
 // essentially a no-op wrapper.
 class WithAudioPortConfig {
   public:
-    WithAudioPortConfig() {}
+    WithAudioPortConfig() = default;
     explicit WithAudioPortConfig(const AudioPortConfig& config) : mInitialConfig(config) {}
     WithAudioPortConfig(const WithAudioPortConfig&) = delete;
     WithAudioPortConfig& operator=(const WithAudioPortConfig&) = delete;
@@ -303,26 +359,31 @@
 
     void SetUpImpl(const std::string& moduleName) {
         ASSERT_NO_FATAL_FAILURE(ConnectToService(moduleName));
-        debug.flags().simulateDeviceConnections = true;
-        ASSERT_NO_FATAL_FAILURE(debug.SetUp(module.get()));
     }
 
-    void TearDownImpl() {
-        if (module != nullptr) {
-            EXPECT_IS_OK(module->setModuleDebug(ModuleDebug{}));
-        }
-    }
+    void TearDownImpl() { debug.reset(); }
 
     void ConnectToService(const std::string& moduleName) {
+        ASSERT_EQ(module, nullptr);
+        ASSERT_EQ(debug, nullptr);
         module = IModule::fromBinder(binderUtil.connectToService(moduleName));
         ASSERT_NE(module, nullptr);
+        ASSERT_NO_FATAL_FAILURE(SetUpDebug());
     }
 
     void RestartService() {
         ASSERT_NE(module, nullptr);
         moduleConfig.reset();
+        debug.reset();
         module = IModule::fromBinder(binderUtil.restartService());
         ASSERT_NE(module, nullptr);
+        ASSERT_NO_FATAL_FAILURE(SetUpDebug());
+    }
+
+    void SetUpDebug() {
+        debug.reset(new WithDebugFlags());
+        debug->flags().simulateDeviceConnections = true;
+        ASSERT_NO_FATAL_FAILURE(debug->SetUp(module.get()));
     }
 
     void ApplyEveryConfig(const std::vector<AudioPortConfig>& configs) {
@@ -391,7 +452,7 @@
     std::shared_ptr<IModule> module;
     std::unique_ptr<ModuleConfig> moduleConfig;
     AudioHalBinderServiceUtil binderUtil;
-    WithDebugFlags debug;
+    std::unique_ptr<WithDebugFlags> debug;
 };
 
 class AudioCoreModule : public AudioCoreModuleBase, public testing::TestWithParam<std::string> {
@@ -466,6 +527,7 @@
     size_t getBufferSizeFrames() const { return mBufferSizeFrames; }
     CommandMQ* getCommandMQ() const { return mCommandMQ.get(); }
     DataMQ* getDataMQ() const { return mDataMQ.get(); }
+    size_t getFrameSizeBytes() const { return mFrameSizeBytes; }
     ReplyMQ* getReplyMQ() const { return mReplyMQ.get(); }
 
   private:
@@ -969,7 +1031,7 @@
         return common->close();
     }
 
-    WithStream() {}
+    WithStream() = default;
     explicit WithStream(const AudioPortConfig& portConfig) : mPortConfig(portConfig) {}
     WithStream(const WithStream&) = delete;
     WithStream& operator=(const WithStream&) = delete;
@@ -1074,7 +1136,7 @@
 
 class WithAudioPatch {
   public:
-    WithAudioPatch() {}
+    WithAudioPatch() = default;
     WithAudioPatch(const AudioPortConfig& srcPortConfig, const AudioPortConfig& sinkPortConfig)
         : mSrcPortConfig(srcPortConfig), mSinkPortConfig(sinkPortConfig) {}
     WithAudioPatch(bool sinkIsCfg1, const AudioPortConfig& portConfig1,
@@ -1515,7 +1577,7 @@
         GTEST_SKIP() << "No external devices in the module.";
     }
     AudioPort ignored;
-    WithDebugFlags doNotSimulateConnections = WithDebugFlags::createNested(debug);
+    WithDebugFlags doNotSimulateConnections = WithDebugFlags::createNested(*debug);
     doNotSimulateConnections.flags().simulateDeviceConnections = false;
     ASSERT_NO_FATAL_FAILURE(doNotSimulateConnections.SetUp(module.get()));
     for (const auto& port : ports) {
@@ -1535,7 +1597,7 @@
     }
     WithDevicePortConnectedState portConnected(*ports.begin(), GenerateUniqueDeviceAddress());
     ASSERT_NO_FATAL_FAILURE(portConnected.SetUp(module.get()));
-    ModuleDebug midwayDebugChange = debug.flags();
+    ModuleDebug midwayDebugChange = debug->flags();
     midwayDebugChange.simulateDeviceConnections = false;
     EXPECT_STATUS(EX_ILLEGAL_STATE, module->setModuleDebug(midwayDebugChange))
             << "when trying to disable connections simulation while having a connected device";
@@ -2758,8 +2820,8 @@
 
 class StreamLogicDefaultDriver : public StreamLogicDriver {
   public:
-    explicit StreamLogicDefaultDriver(std::shared_ptr<StateSequence> commands)
-        : mCommands(commands) {
+    StreamLogicDefaultDriver(std::shared_ptr<StateSequence> commands, size_t frameSizeBytes)
+        : mCommands(commands), mFrameSizeBytes(frameSizeBytes) {
         mCommands->rewind();
     }
 
@@ -2778,7 +2840,10 @@
                 if (actualSize != nullptr) {
                     // In the output scenario, reduce slightly the fmqByteCount to verify
                     // that the HAL module always consumes all data from the MQ.
-                    if (maxDataSize > 1) maxDataSize--;
+                    if (maxDataSize > static_cast<int>(mFrameSizeBytes)) {
+                        LOG(DEBUG) << __func__ << ": reducing data size by " << mFrameSizeBytes;
+                        maxDataSize -= mFrameSizeBytes;
+                    }
                     *actualSize = maxDataSize;
                 }
                 command->set<StreamDescriptor::Command::Tag::burst>(maxDataSize);
@@ -2824,6 +2889,7 @@
 
   protected:
     std::shared_ptr<StateSequence> mCommands;
+    const size_t mFrameSizeBytes;
     std::optional<StreamDescriptor::State> mPreviousState;
     std::optional<int64_t> mPreviousFrames;
     bool mObservablePositionIncrease = false;
@@ -2872,7 +2938,7 @@
                 (!isNonBlocking && streamType == StreamTypeFilter::ASYNC)) {
                 continue;
             }
-            WithDebugFlags delayTransientStates = WithDebugFlags::createNested(debug);
+            WithDebugFlags delayTransientStates = WithDebugFlags::createNested(*debug);
             delayTransientStates.flags().streamTransientStateDelayMs =
                     std::get<NAMED_CMD_DELAY_MS>(std::get<PARAM_CMD_SEQ>(GetParam()));
             ASSERT_NO_FATAL_FAILURE(delayTransientStates.SetUp(module.get()));
@@ -2883,6 +2949,23 @@
             } else {
                 ASSERT_NO_FATAL_FAILURE(RunStreamIoCommandsImplSeq2(portConfig, commandsAndStates));
             }
+            if (isNonBlocking) {
+                // Also try running the same sequence with "aosp.forceTransientBurst" set.
+                // This will only work with the default implementation. When it works, the stream
+                // tries always to move to the 'TRANSFERRING' state after a burst.
+                // This helps to check more paths for our test scenarios.
+                WithModuleParameter forceTransientBurst("aosp.forceTransientBurst", Boolean{true});
+                if (forceTransientBurst.SetUpNoChecks(module.get(), true /*failureExpected*/)
+                            .isOk()) {
+                    if (!std::get<PARAM_SETUP_SEQ>(GetParam())) {
+                        ASSERT_NO_FATAL_FAILURE(
+                                RunStreamIoCommandsImplSeq1(portConfig, commandsAndStates));
+                    } else {
+                        ASSERT_NO_FATAL_FAILURE(
+                                RunStreamIoCommandsImplSeq2(portConfig, commandsAndStates));
+                    }
+                }
+            }
         }
     }
 
@@ -2903,7 +2986,8 @@
 
         WithStream<Stream> stream(patch.getPortConfig(IOTraits<Stream>::is_input));
         ASSERT_NO_FATAL_FAILURE(stream.SetUp(module.get(), kDefaultBufferSizeFrames));
-        StreamLogicDefaultDriver driver(commandsAndStates);
+        StreamLogicDefaultDriver driver(commandsAndStates,
+                                        stream.getContext()->getFrameSizeBytes());
         typename IOTraits<Stream>::Worker worker(*stream.getContext(), &driver,
                                                  stream.getEventReceiver());
 
@@ -2924,7 +3008,8 @@
                                      std::shared_ptr<StateSequence> commandsAndStates) {
         WithStream<Stream> stream(portConfig);
         ASSERT_NO_FATAL_FAILURE(stream.SetUp(module.get(), kDefaultBufferSizeFrames));
-        StreamLogicDefaultDriver driver(commandsAndStates);
+        StreamLogicDefaultDriver driver(commandsAndStates,
+                                        stream.getContext()->getFrameSizeBytes());
         typename IOTraits<Stream>::Worker worker(*stream.getContext(), &driver,
                                                  stream.getEventReceiver());