diff --git a/audio/aidl/default/audio_effects_config.xml b/audio/aidl/default/audio_effects_config.xml
index c01eb3f..11683d2 100644
--- a/audio/aidl/default/audio_effects_config.xml
+++ b/audio/aidl/default/audio_effects_config.xml
@@ -88,7 +88,6 @@
         <effect name="extension_effect" library="extensioneffect" uuid="fa81dd00-588b-11ed-9b6a-0242ac120002" type="fa81de0e-588b-11ed-9b6a-0242ac120002"/>
         <effect name="acoustic_echo_canceler" library="pre_processing" uuid="bb392ec0-8d4d-11e0-a896-0002a5d5c51b"/>
         <effect name="noise_suppression" library="pre_processing" uuid="c06c8400-8e06-11e0-9cb6-0002a5d5c51b"/>
-        <effect name="spatializer" library="spatializersw" uuid="fa81a880-588b-11ed-9b6a-0242ac120002"/>
     </effects>
 
     <preprocess>
diff --git a/audio/aidl/vts/EffectHelper.h b/audio/aidl/vts/EffectHelper.h
index 72a4667..cad1195 100644
--- a/audio/aidl/vts/EffectHelper.h
+++ b/audio/aidl/vts/EffectHelper.h
@@ -92,6 +92,7 @@
         ASSERT_STATUS(status, factory->createEffect(id.uuid, &effect));
         if (status == EX_NONE) {
             ASSERT_NE(effect, nullptr) << toString(id.uuid);
+            ASSERT_NO_FATAL_FAILURE(expectState(effect, State::INIT));
         }
         mIsSpatializer = id.type == getEffectTypeUuidSpatializer();
         mDescriptor = desc;
@@ -111,11 +112,17 @@
         ASSERT_STATUS(status, factory->destroyEffect(effect));
     }
 
-    static void open(std::shared_ptr<IEffect> effect, const Parameter::Common& common,
-                     const std::optional<Parameter::Specific>& specific,
-                     IEffect::OpenEffectReturn* ret, binder_status_t status = EX_NONE) {
+    void open(std::shared_ptr<IEffect> effect, const Parameter::Common& common,
+              const std::optional<Parameter::Specific>& specific, IEffect::OpenEffectReturn* ret,
+              binder_status_t status = EX_NONE) {
         ASSERT_NE(effect, nullptr);
         ASSERT_STATUS(status, effect->open(common, specific, ret));
+        if (status != EX_NONE) {
+            return;
+        }
+
+        ASSERT_NO_FATAL_FAILURE(expectState(effect, State::IDLE));
+        updateFrameSize(common);
     }
 
     void open(std::shared_ptr<IEffect> effect, int session = 0, binder_status_t status = EX_NONE) {
@@ -125,21 +132,37 @@
         ASSERT_NO_FATAL_FAILURE(open(effect, common, std::nullopt /* specific */, &ret, status));
     }
 
+    void reopen(std::shared_ptr<IEffect> effect, const Parameter::Common& common,
+                IEffect::OpenEffectReturn* ret, binder_status_t status = EX_NONE) {
+        ASSERT_NE(effect, nullptr);
+        ASSERT_STATUS(status, effect->reopen(ret));
+        if (status != EX_NONE) {
+            return;
+        }
+        updateFrameSize(common);
+    }
+
     static void closeIgnoreRet(std::shared_ptr<IEffect> effect) {
         if (effect) {
             effect->close();
         }
     }
+
     static void close(std::shared_ptr<IEffect> effect, binder_status_t status = EX_NONE) {
         if (effect) {
             ASSERT_STATUS(status, effect->close());
+            if (status == EX_NONE) {
+                ASSERT_NO_FATAL_FAILURE(expectState(effect, State::INIT));
+            }
         }
     }
+
     static void getDescriptor(std::shared_ptr<IEffect> effect, Descriptor& desc,
                               binder_status_t status = EX_NONE) {
         ASSERT_NE(effect, nullptr);
         ASSERT_STATUS(status, effect->getDescriptor(&desc));
     }
+
     static void expectState(std::shared_ptr<IEffect> effect, State expectState,
                             binder_status_t status = EX_NONE) {
         ASSERT_NE(effect, nullptr);
@@ -147,27 +170,35 @@
         ASSERT_STATUS(status, effect->getState(&state));
         ASSERT_EQ(expectState, state);
     }
+
     static void commandIgnoreRet(std::shared_ptr<IEffect> effect, CommandId command) {
         if (effect) {
             effect->command(command);
         }
     }
+
     static void command(std::shared_ptr<IEffect> effect, CommandId command,
                         binder_status_t status = EX_NONE) {
         ASSERT_NE(effect, nullptr);
         ASSERT_STATUS(status, effect->command(command));
+        if (status != EX_NONE) {
+            return;
+        }
+
+        switch (command) {
+            case CommandId::START:
+                ASSERT_NO_FATAL_FAILURE(expectState(effect, State::PROCESSING));
+                break;
+            case CommandId::STOP:
+                FALLTHROUGH_INTENDED;
+            case CommandId::RESET:
+                ASSERT_NO_FATAL_FAILURE(expectState(effect, State::IDLE));
+                break;
+            default:
+                return;
+        }
     }
-    static void allocateInputData(const Parameter::Common common, std::unique_ptr<DataMQ>& mq,
-                                  std::vector<float>& buffer) {
-        ASSERT_NE(mq, nullptr);
-        auto frameSize = ::aidl::android::hardware::audio::common::getFrameSizeInBytes(
-                common.input.base.format, common.input.base.channelMask);
-        const size_t floatsToWrite = mq->availableToWrite();
-        ASSERT_NE(0UL, floatsToWrite);
-        ASSERT_EQ(frameSize * common.input.frameCount, floatsToWrite * sizeof(float));
-        buffer.resize(floatsToWrite);
-        std::fill(buffer.begin(), buffer.end(), 0x5a);
-    }
+
     static void writeToFmq(std::unique_ptr<StatusMQ>& statusMq, std::unique_ptr<DataMQ>& dataMq,
                            const std::vector<float>& buffer, int version) {
         const size_t available = dataMq->availableToWrite();
@@ -184,6 +215,7 @@
                                                          : kEventFlagNotEmpty);
         ASSERT_EQ(::android::OK, EventFlag::deleteEventFlag(&efGroup));
     }
+
     static void readFromFmq(std::unique_ptr<StatusMQ>& statusMq, size_t statusNum,
                             std::unique_ptr<DataMQ>& dataMq, size_t expectFloats,
                             std::vector<float>& buffer,
@@ -204,6 +236,7 @@
             ASSERT_TRUE(dataMq->read(buffer.data(), expectFloats));
         }
     }
+
     static void expectDataMqUpdateEventFlag(std::unique_ptr<StatusMQ>& statusMq) {
         EventFlag* efGroup;
         ASSERT_EQ(::android::OK,
@@ -218,8 +251,10 @@
     Parameter::Common createParamCommon(int session = 0, int ioHandle = -1, int iSampleRate = 48000,
                                         int oSampleRate = 48000, long iFrameCount = 0x100,
                                         long oFrameCount = 0x100) {
-        AudioChannelLayout defaultLayout = AudioChannelLayout::make<AudioChannelLayout::layoutMask>(
+        AudioChannelLayout inputLayout = AudioChannelLayout::make<AudioChannelLayout::layoutMask>(
                 AudioChannelLayout::LAYOUT_STEREO);
+        AudioChannelLayout outputLayout = inputLayout;
+
         // query supported input layout and use it as the default parameter in common
         if (mIsSpatializer && isRangeValid<Range::spatializer>(Spatializer::supportedChannelLayout,
                                                                mDescriptor.capability)) {
@@ -229,12 +264,14 @@
                 layoutRange &&
                 0 != (layouts = layoutRange->min.get<Spatializer::supportedChannelLayout>())
                                 .size()) {
-                defaultLayout = layouts[0];
+                inputLayout = layouts[0];
             }
         }
+
         return createParamCommon(session, ioHandle, iSampleRate, oSampleRate, iFrameCount,
-                                 oFrameCount, defaultLayout, defaultLayout);
+                                 oFrameCount, inputLayout, outputLayout);
     }
+
     static Parameter::Common createParamCommon(int session, int ioHandle, int iSampleRate,
                                                int oSampleRate, long iFrameCount, long oFrameCount,
                                                AudioChannelLayout inputChannelLayout,
@@ -333,33 +370,38 @@
 
     static void processAndWriteToOutput(std::vector<float>& inputBuffer,
                                         std::vector<float>& outputBuffer,
-                                        const std::shared_ptr<IEffect>& mEffect,
-                                        IEffect::OpenEffectReturn* mOpenEffectReturn) {
+                                        const std::shared_ptr<IEffect>& effect,
+                                        IEffect::OpenEffectReturn* openEffectReturn,
+                                        int version = -1, int times = 1) {
         // Initialize AidlMessagequeues
-        auto statusMQ = std::make_unique<EffectHelper::StatusMQ>(mOpenEffectReturn->statusMQ);
+        auto statusMQ = std::make_unique<EffectHelper::StatusMQ>(openEffectReturn->statusMQ);
         ASSERT_TRUE(statusMQ->isValid());
-        auto inputMQ = std::make_unique<EffectHelper::DataMQ>(mOpenEffectReturn->inputDataMQ);
+        auto inputMQ = std::make_unique<EffectHelper::DataMQ>(openEffectReturn->inputDataMQ);
         ASSERT_TRUE(inputMQ->isValid());
-        auto outputMQ = std::make_unique<EffectHelper::DataMQ>(mOpenEffectReturn->outputDataMQ);
+        auto outputMQ = std::make_unique<EffectHelper::DataMQ>(openEffectReturn->outputDataMQ);
         ASSERT_TRUE(outputMQ->isValid());
 
         // Enabling the process
-        ASSERT_NO_FATAL_FAILURE(command(mEffect, CommandId::START));
-        ASSERT_NO_FATAL_FAILURE(expectState(mEffect, State::PROCESSING));
+        ASSERT_NO_FATAL_FAILURE(command(effect, CommandId::START));
 
         // Write from buffer to message queues and calling process
-        EXPECT_NO_FATAL_FAILURE(EffectHelper::writeToFmq(statusMQ, inputMQ, inputBuffer, [&]() {
-            int version = 0;
-            return (mEffect && mEffect->getInterfaceVersion(&version).isOk()) ? version : 0;
-        }()));
+        if (version == -1) {
+            ASSERT_IS_OK(effect->getInterfaceVersion(&version));
+        }
 
-        // Read the updated message queues into buffer
-        EXPECT_NO_FATAL_FAILURE(EffectHelper::readFromFmq(statusMQ, 1, outputMQ,
-                                                          outputBuffer.size(), outputBuffer));
+        for (int i = 0; i < times; i++) {
+            EXPECT_NO_FATAL_FAILURE(
+                    EffectHelper::writeToFmq(statusMQ, inputMQ, inputBuffer, version));
+            // Read the updated message queues into buffer
+            EXPECT_NO_FATAL_FAILURE(EffectHelper::readFromFmq(statusMQ, 1, outputMQ,
+                                                              outputBuffer.size(), outputBuffer));
+        }
+
+        ASSERT_NO_FATAL_FAILURE(command(effect, CommandId::STOP));
+        EXPECT_NO_FATAL_FAILURE(EffectHelper::readFromFmq(statusMQ, 0, outputMQ, 0, outputBuffer));
 
         // Disable the process
-        ASSERT_NO_FATAL_FAILURE(command(mEffect, CommandId::RESET));
-        ASSERT_NO_FATAL_FAILURE(expectState(mEffect, State::IDLE));
+        ASSERT_NO_FATAL_FAILURE(command(effect, CommandId::RESET));
     }
 
     // Find FFT bin indices for testFrequencies and get bin center frequencies
@@ -403,6 +445,17 @@
         return bufferMag;
     }
 
+    void updateFrameSize(const Parameter::Common& common) {
+        mInputFrameSize = ::aidl::android::hardware::audio::common::getFrameSizeInBytes(
+                common.input.base.format, common.input.base.channelMask);
+        mInputSamples = common.input.frameCount * mInputFrameSize / sizeof(float);
+        mOutputFrameSize = ::aidl::android::hardware::audio::common::getFrameSizeInBytes(
+                common.output.base.format, common.output.base.channelMask);
+        mOutputSamples = common.output.frameCount * mOutputFrameSize / sizeof(float);
+    }
+
     bool mIsSpatializer;
     Descriptor mDescriptor;
+    size_t mInputFrameSize, mOutputFrameSize;
+    size_t mInputSamples, mOutputSamples;
 };
diff --git a/audio/aidl/vts/VtsHalAudioEffectTargetTest.cpp b/audio/aidl/vts/VtsHalAudioEffectTargetTest.cpp
index 2f47d07..d23bdc9 100644
--- a/audio/aidl/vts/VtsHalAudioEffectTargetTest.cpp
+++ b/audio/aidl/vts/VtsHalAudioEffectTargetTest.cpp
@@ -200,7 +200,6 @@
 // An effect instance is in INIT state by default after it was created.
 TEST_P(AudioEffectTest, InitStateAfterCreation) {
     ASSERT_NO_FATAL_FAILURE(create(mFactory, mEffect, mDescriptor));
-    ASSERT_NO_FATAL_FAILURE(expectState(mEffect, State::INIT));
     ASSERT_NO_FATAL_FAILURE(destroy(mFactory, mEffect));
 }
 
@@ -208,7 +207,6 @@
 TEST_P(AudioEffectTest, IdleStateAfterOpen) {
     ASSERT_NO_FATAL_FAILURE(create(mFactory, mEffect, mDescriptor));
     ASSERT_NO_FATAL_FAILURE(open(mEffect));
-    ASSERT_NO_FATAL_FAILURE(expectState(mEffect, State::IDLE));
     ASSERT_NO_FATAL_FAILURE(close(mEffect));
     ASSERT_NO_FATAL_FAILURE(destroy(mFactory, mEffect));
 }
@@ -216,11 +214,8 @@
 // An effect instance is in PROCESSING state after it receive an START command.
 TEST_P(AudioEffectTest, ProcessingStateAfterStart) {
     ASSERT_NO_FATAL_FAILURE(create(mFactory, mEffect, mDescriptor));
-    ASSERT_NO_FATAL_FAILURE(expectState(mEffect, State::INIT));
     ASSERT_NO_FATAL_FAILURE(open(mEffect));
-    ASSERT_NO_FATAL_FAILURE(expectState(mEffect, State::IDLE));
     ASSERT_NO_FATAL_FAILURE(command(mEffect, CommandId::START));
-    ASSERT_NO_FATAL_FAILURE(expectState(mEffect, State::PROCESSING));
     ASSERT_NO_FATAL_FAILURE(command(mEffect, CommandId::STOP));
     ASSERT_NO_FATAL_FAILURE(close(mEffect));
     ASSERT_NO_FATAL_FAILURE(destroy(mFactory, mEffect));
@@ -231,9 +226,7 @@
     ASSERT_NO_FATAL_FAILURE(create(mFactory, mEffect, mDescriptor));
     ASSERT_NO_FATAL_FAILURE(open(mEffect));
     ASSERT_NO_FATAL_FAILURE(command(mEffect, CommandId::START));
-    ASSERT_NO_FATAL_FAILURE(expectState(mEffect, State::PROCESSING));
     ASSERT_NO_FATAL_FAILURE(command(mEffect, CommandId::STOP));
-    ASSERT_NO_FATAL_FAILURE(expectState(mEffect, State::IDLE));
     ASSERT_NO_FATAL_FAILURE(close(mEffect));
     ASSERT_NO_FATAL_FAILURE(destroy(mFactory, mEffect));
 }
@@ -243,9 +236,7 @@
     ASSERT_NO_FATAL_FAILURE(create(mFactory, mEffect, mDescriptor));
     ASSERT_NO_FATAL_FAILURE(open(mEffect));
     ASSERT_NO_FATAL_FAILURE(command(mEffect, CommandId::START));
-    ASSERT_NO_FATAL_FAILURE(expectState(mEffect, State::PROCESSING));
     ASSERT_NO_FATAL_FAILURE(command(mEffect, CommandId::RESET));
-    ASSERT_NO_FATAL_FAILURE(expectState(mEffect, State::IDLE));
     ASSERT_NO_FATAL_FAILURE(close(mEffect));
     ASSERT_NO_FATAL_FAILURE(destroy(mFactory, mEffect));
 }
@@ -257,7 +248,6 @@
     ASSERT_NO_FATAL_FAILURE(command(mEffect, CommandId::START));
     ASSERT_NO_FATAL_FAILURE(command(mEffect, CommandId::STOP));
     ASSERT_NO_FATAL_FAILURE(close(mEffect));
-    ASSERT_NO_FATAL_FAILURE(expectState(mEffect, State::INIT));
     ASSERT_NO_FATAL_FAILURE(destroy(mFactory, mEffect));
 }
 
@@ -274,9 +264,7 @@
 TEST_P(AudioEffectTest, StopCommandInIdleStateNoOp) {
     ASSERT_NO_FATAL_FAILURE(create(mFactory, mEffect, mDescriptor));
     ASSERT_NO_FATAL_FAILURE(open(mEffect));
-    ASSERT_NO_FATAL_FAILURE(expectState(mEffect, State::IDLE));
     ASSERT_NO_FATAL_FAILURE(command(mEffect, CommandId::STOP));
-    ASSERT_NO_FATAL_FAILURE(expectState(mEffect, State::IDLE));
     ASSERT_NO_FATAL_FAILURE(close(mEffect));
     ASSERT_NO_FATAL_FAILURE(destroy(mFactory, mEffect));
 }
@@ -285,9 +273,7 @@
 TEST_P(AudioEffectTest, ResetCommandInIdleStateNoOp) {
     ASSERT_NO_FATAL_FAILURE(create(mFactory, mEffect, mDescriptor));
     ASSERT_NO_FATAL_FAILURE(open(mEffect));
-    ASSERT_NO_FATAL_FAILURE(expectState(mEffect, State::IDLE));
     ASSERT_NO_FATAL_FAILURE(command(mEffect, CommandId::RESET));
-    ASSERT_NO_FATAL_FAILURE(expectState(mEffect, State::IDLE));
     ASSERT_NO_FATAL_FAILURE(close(mEffect));
     ASSERT_NO_FATAL_FAILURE(destroy(mFactory, mEffect));
 }
@@ -296,16 +282,11 @@
 TEST_P(AudioEffectTest, RepeatStartAndStop) {
     ASSERT_NO_FATAL_FAILURE(create(mFactory, mEffect, mDescriptor));
     ASSERT_NO_FATAL_FAILURE(open(mEffect));
-    ASSERT_NO_FATAL_FAILURE(expectState(mEffect, State::IDLE));
     ASSERT_NO_FATAL_FAILURE(command(mEffect, CommandId::START));
-    ASSERT_NO_FATAL_FAILURE(expectState(mEffect, State::PROCESSING));
     ASSERT_NO_FATAL_FAILURE(command(mEffect, CommandId::STOP));
-    ASSERT_NO_FATAL_FAILURE(expectState(mEffect, State::IDLE));
 
     ASSERT_NO_FATAL_FAILURE(command(mEffect, CommandId::START));
-    ASSERT_NO_FATAL_FAILURE(expectState(mEffect, State::PROCESSING));
     ASSERT_NO_FATAL_FAILURE(command(mEffect, CommandId::STOP));
-    ASSERT_NO_FATAL_FAILURE(expectState(mEffect, State::IDLE));
     ASSERT_NO_FATAL_FAILURE(close(mEffect));
     ASSERT_NO_FATAL_FAILURE(destroy(mFactory, mEffect));
 }
@@ -314,16 +295,10 @@
 TEST_P(AudioEffectTest, RepeatStartAndReset) {
     ASSERT_NO_FATAL_FAILURE(create(mFactory, mEffect, mDescriptor));
     ASSERT_NO_FATAL_FAILURE(open(mEffect));
-    ASSERT_NO_FATAL_FAILURE(expectState(mEffect, State::IDLE));
     ASSERT_NO_FATAL_FAILURE(command(mEffect, CommandId::START));
-    ASSERT_NO_FATAL_FAILURE(expectState(mEffect, State::PROCESSING));
     ASSERT_NO_FATAL_FAILURE(command(mEffect, CommandId::RESET));
-    ASSERT_NO_FATAL_FAILURE(expectState(mEffect, State::IDLE));
-
     ASSERT_NO_FATAL_FAILURE(command(mEffect, CommandId::START));
-    ASSERT_NO_FATAL_FAILURE(expectState(mEffect, State::PROCESSING));
     ASSERT_NO_FATAL_FAILURE(command(mEffect, CommandId::RESET));
-    ASSERT_NO_FATAL_FAILURE(expectState(mEffect, State::IDLE));
     ASSERT_NO_FATAL_FAILURE(close(mEffect));
     ASSERT_NO_FATAL_FAILURE(destroy(mFactory, mEffect));
 }
@@ -332,14 +307,11 @@
 TEST_P(AudioEffectTest, CloseProcessingStateEffects) {
     ASSERT_NO_FATAL_FAILURE(create(mFactory, mEffect, mDescriptor));
     ASSERT_NO_FATAL_FAILURE(open(mEffect));
-    ASSERT_NO_FATAL_FAILURE(expectState(mEffect, State::IDLE));
     ASSERT_NO_FATAL_FAILURE(command(mEffect, CommandId::START));
-    ASSERT_NO_FATAL_FAILURE(expectState(mEffect, State::PROCESSING));
 
     ASSERT_NO_FATAL_FAILURE(close(mEffect, EX_ILLEGAL_STATE));
 
     ASSERT_NO_FATAL_FAILURE(command(mEffect, CommandId::STOP));
-    ASSERT_NO_FATAL_FAILURE(expectState(mEffect, State::IDLE));
     ASSERT_NO_FATAL_FAILURE(close(mEffect));
     ASSERT_NO_FATAL_FAILURE(destroy(mFactory, mEffect));
 }
@@ -348,8 +320,6 @@
 TEST_P(AudioEffectTest, DestroyOpenEffects) {
     ASSERT_NO_FATAL_FAILURE(create(mFactory, mEffect, mDescriptor));
     ASSERT_NO_FATAL_FAILURE(open(mEffect));
-    ASSERT_NO_FATAL_FAILURE(expectState(mEffect, State::IDLE));
-
     ASSERT_NO_FATAL_FAILURE(destroy(mFactory, mEffect, EX_ILLEGAL_STATE));
 
     // cleanup
@@ -361,32 +331,22 @@
 TEST_P(AudioEffectTest, DestroyProcessingEffects) {
     ASSERT_NO_FATAL_FAILURE(create(mFactory, mEffect, mDescriptor));
     ASSERT_NO_FATAL_FAILURE(open(mEffect));
-    ASSERT_NO_FATAL_FAILURE(expectState(mEffect, State::IDLE));
     ASSERT_NO_FATAL_FAILURE(command(mEffect, CommandId::START));
-    ASSERT_NO_FATAL_FAILURE(expectState(mEffect, State::PROCESSING));
-
     ASSERT_NO_FATAL_FAILURE(destroy(mFactory, mEffect, EX_ILLEGAL_STATE));
 
     // cleanup
     ASSERT_NO_FATAL_FAILURE(command(mEffect, CommandId::STOP));
-    ASSERT_NO_FATAL_FAILURE(expectState(mEffect, State::IDLE));
     ASSERT_NO_FATAL_FAILURE(close(mEffect));
     ASSERT_NO_FATAL_FAILURE(destroy(mFactory, mEffect));
 }
 
 TEST_P(AudioEffectTest, NormalSequenceStates) {
     ASSERT_NO_FATAL_FAILURE(create(mFactory, mEffect, mDescriptor));
-    ASSERT_NO_FATAL_FAILURE(expectState(mEffect, State::INIT));
     ASSERT_NO_FATAL_FAILURE(open(mEffect));
-    ASSERT_NO_FATAL_FAILURE(expectState(mEffect, State::IDLE));
     ASSERT_NO_FATAL_FAILURE(command(mEffect, CommandId::START));
-    ASSERT_NO_FATAL_FAILURE(expectState(mEffect, State::PROCESSING));
     ASSERT_NO_FATAL_FAILURE(command(mEffect, CommandId::STOP));
-    ASSERT_NO_FATAL_FAILURE(expectState(mEffect, State::IDLE));
     ASSERT_NO_FATAL_FAILURE(command(mEffect, CommandId::START));
-    ASSERT_NO_FATAL_FAILURE(expectState(mEffect, State::PROCESSING));
     ASSERT_NO_FATAL_FAILURE(command(mEffect, CommandId::RESET));
-    ASSERT_NO_FATAL_FAILURE(expectState(mEffect, State::IDLE));
     ASSERT_NO_FATAL_FAILURE(close(mEffect));
     ASSERT_NO_FATAL_FAILURE(destroy(mFactory, mEffect));
 }
@@ -430,7 +390,6 @@
     ASSERT_NO_FATAL_FAILURE(create(mFactory, mEffect, mDescriptor));
     ASSERT_NO_FATAL_FAILURE(open(mEffect));
     ASSERT_NO_FATAL_FAILURE(command(mEffect, CommandId::START));
-    ASSERT_NO_FATAL_FAILURE(expectState(mEffect, State::PROCESSING));
 
     Parameter::Common common = createParamCommon(0 /* session */, 1 /* ioHandle */,
                                                  44100 /* iSampleRate */, 44100 /* oSampleRate */);
@@ -447,9 +406,7 @@
     ASSERT_NO_FATAL_FAILURE(create(mFactory, mEffect, mDescriptor));
     ASSERT_NO_FATAL_FAILURE(open(mEffect));
     ASSERT_NO_FATAL_FAILURE(command(mEffect, CommandId::START));
-    ASSERT_NO_FATAL_FAILURE(expectState(mEffect, State::PROCESSING));
     ASSERT_NO_FATAL_FAILURE(command(mEffect, CommandId::STOP));
-    ASSERT_NO_FATAL_FAILURE(expectState(mEffect, State::IDLE));
 
     Parameter::Common common = createParamCommon(0 /* session */, 1 /* ioHandle */,
                                                  44100 /* iSampleRate */, 44100 /* oSampleRate */);
@@ -465,7 +422,6 @@
     ASSERT_NO_FATAL_FAILURE(create(mFactory, mEffect, mDescriptor));
     ASSERT_NO_FATAL_FAILURE(open(mEffect));
     ASSERT_NO_FATAL_FAILURE(command(mEffect, CommandId::START));
-    ASSERT_NO_FATAL_FAILURE(expectState(mEffect, State::PROCESSING));
 
     Parameter::Common common = createParamCommon(0 /* session */, 1 /* ioHandle */,
                                                  44100 /* iSampleRate */, 44100 /* oSampleRate */);
@@ -473,7 +429,6 @@
     ASSERT_NO_FATAL_FAILURE(setAndGetParameter(id, Parameter::make<Parameter::common>(common)));
 
     ASSERT_NO_FATAL_FAILURE(command(mEffect, CommandId::STOP));
-    ASSERT_NO_FATAL_FAILURE(expectState(mEffect, State::IDLE));
     ASSERT_NO_FATAL_FAILURE(close(mEffect));
     ASSERT_NO_FATAL_FAILURE(destroy(mFactory, mEffect));
 }
@@ -484,7 +439,6 @@
     ASSERT_NO_FATAL_FAILURE(open(mEffect));
 
     ASSERT_NO_FATAL_FAILURE(command(mEffect, CommandId::START));
-    ASSERT_NO_FATAL_FAILURE(expectState(mEffect, State::PROCESSING));
 
     Parameter::Common common = createParamCommon(0 /* session */, 1 /* ioHandle */,
                                                  44100 /* iSampleRate */, 44100 /* oSampleRate */);
@@ -492,12 +446,10 @@
     ASSERT_NO_FATAL_FAILURE(setAndGetParameter(id, Parameter::make<Parameter::common>(common)));
 
     ASSERT_NO_FATAL_FAILURE(command(mEffect, CommandId::RESET));
-    ASSERT_NO_FATAL_FAILURE(expectState(mEffect, State::IDLE));
 
     ASSERT_NO_FATAL_FAILURE(setAndGetParameter(id, Parameter::make<Parameter::common>(common)));
 
     ASSERT_NO_FATAL_FAILURE(command(mEffect, CommandId::STOP));
-    ASSERT_NO_FATAL_FAILURE(expectState(mEffect, State::IDLE));
     ASSERT_NO_FATAL_FAILURE(close(mEffect));
     ASSERT_NO_FATAL_FAILURE(destroy(mFactory, mEffect));
 }
@@ -511,9 +463,7 @@
 
     ASSERT_NO_FATAL_FAILURE(create(mFactory, mEffect, mDescriptor));
     ASSERT_NO_FATAL_FAILURE(open(mEffect));
-
     ASSERT_NO_FATAL_FAILURE(command(mEffect, CommandId::START));
-    ASSERT_NO_FATAL_FAILURE(expectState(mEffect, State::PROCESSING));
 
     std::vector<AudioDeviceDescription> deviceDescs = {
             {.type = AudioDeviceType::IN_DEFAULT,
@@ -525,7 +475,6 @@
             setAndGetParameter(id, Parameter::make<Parameter::deviceDescription>(deviceDescs)));
 
     ASSERT_NO_FATAL_FAILURE(command(mEffect, CommandId::STOP));
-    ASSERT_NO_FATAL_FAILURE(expectState(mEffect, State::IDLE));
     ASSERT_NO_FATAL_FAILURE(close(mEffect));
     ASSERT_NO_FATAL_FAILURE(destroy(mFactory, mEffect));
 }
@@ -541,7 +490,6 @@
     ASSERT_NO_FATAL_FAILURE(open(mEffect));
 
     ASSERT_NO_FATAL_FAILURE(command(mEffect, CommandId::START));
-    ASSERT_NO_FATAL_FAILURE(expectState(mEffect, State::PROCESSING));
 
     Parameter::Id id = Parameter::Id::make<Parameter::Id::commonTag>(Parameter::mode);
     ASSERT_NO_FATAL_FAILURE(
@@ -550,7 +498,6 @@
             setAndGetParameter(id, Parameter::make<Parameter::mode>(AudioMode::IN_COMMUNICATION)));
 
     ASSERT_NO_FATAL_FAILURE(command(mEffect, CommandId::STOP));
-    ASSERT_NO_FATAL_FAILURE(expectState(mEffect, State::IDLE));
     ASSERT_NO_FATAL_FAILURE(close(mEffect));
     ASSERT_NO_FATAL_FAILURE(destroy(mFactory, mEffect));
 }
@@ -564,9 +511,7 @@
 
     ASSERT_NO_FATAL_FAILURE(create(mFactory, mEffect, mDescriptor));
     ASSERT_NO_FATAL_FAILURE(open(mEffect));
-
     ASSERT_NO_FATAL_FAILURE(command(mEffect, CommandId::START));
-    ASSERT_NO_FATAL_FAILURE(expectState(mEffect, State::PROCESSING));
 
     Parameter::Id id = Parameter::Id::make<Parameter::Id::commonTag>(Parameter::source);
     ASSERT_NO_FATAL_FAILURE(
@@ -575,7 +520,6 @@
             id, Parameter::make<Parameter::source>(AudioSource::VOICE_RECOGNITION)));
 
     ASSERT_NO_FATAL_FAILURE(command(mEffect, CommandId::STOP));
-    ASSERT_NO_FATAL_FAILURE(expectState(mEffect, State::IDLE));
     ASSERT_NO_FATAL_FAILURE(close(mEffect));
     ASSERT_NO_FATAL_FAILURE(destroy(mFactory, mEffect));
 }
@@ -589,9 +533,7 @@
 
     ASSERT_NO_FATAL_FAILURE(create(mFactory, mEffect, mDescriptor));
     ASSERT_NO_FATAL_FAILURE(open(mEffect));
-
     ASSERT_NO_FATAL_FAILURE(command(mEffect, CommandId::START));
-    ASSERT_NO_FATAL_FAILURE(expectState(mEffect, State::PROCESSING));
 
     Parameter::Id id = Parameter::Id::make<Parameter::Id::commonTag>(Parameter::volumeStereo);
     Parameter::VolumeStereo volume = {.left = 10.0, .right = 10.0};
@@ -605,7 +547,6 @@
     }
 
     ASSERT_NO_FATAL_FAILURE(command(mEffect, CommandId::STOP));
-    ASSERT_NO_FATAL_FAILURE(expectState(mEffect, State::IDLE));
     ASSERT_NO_FATAL_FAILURE(close(mEffect));
     ASSERT_NO_FATAL_FAILURE(destroy(mFactory, mEffect));
 }
@@ -638,7 +579,7 @@
     ASSERT_NO_FATAL_FAILURE(setAndGetParameter(id, Parameter::make<Parameter::common>(common)));
     ASSERT_TRUE(statusMQ->isValid());
     expectDataMqUpdateEventFlag(statusMQ);
-    EXPECT_IS_OK(mEffect->reopen(&ret));
+    ASSERT_NO_FATAL_FAILURE(reopen(mEffect, common, &ret));
     inputMQ = std::make_unique<EffectHelper::DataMQ>(ret.inputDataMQ);
     outputMQ = std::make_unique<EffectHelper::DataMQ>(ret.outputDataMQ);
     ASSERT_TRUE(statusMQ->isValid());
@@ -649,7 +590,7 @@
     ASSERT_NO_FATAL_FAILURE(setAndGetParameter(id, Parameter::make<Parameter::common>(common)));
     ASSERT_TRUE(statusMQ->isValid());
     expectDataMqUpdateEventFlag(statusMQ);
-    EXPECT_IS_OK(mEffect->reopen(&ret));
+    ASSERT_NO_FATAL_FAILURE(reopen(mEffect, common, &ret));
     inputMQ = std::make_unique<EffectHelper::DataMQ>(ret.inputDataMQ);
     outputMQ = std::make_unique<EffectHelper::DataMQ>(ret.outputDataMQ);
     ASSERT_TRUE(statusMQ->isValid());
@@ -671,26 +612,9 @@
             kInputFrameCount /* iFrameCount */, kOutputFrameCount /* oFrameCount */);
     IEffect::OpenEffectReturn ret;
     ASSERT_NO_FATAL_FAILURE(open(mEffect, common, std::nullopt /* specific */, &ret, EX_NONE));
-    auto statusMQ = std::make_unique<EffectHelper::StatusMQ>(ret.statusMQ);
-    ASSERT_TRUE(statusMQ->isValid());
-    auto inputMQ = std::make_unique<EffectHelper::DataMQ>(ret.inputDataMQ);
-    ASSERT_TRUE(inputMQ->isValid());
-    auto outputMQ = std::make_unique<EffectHelper::DataMQ>(ret.outputDataMQ);
-    ASSERT_TRUE(outputMQ->isValid());
-
-    ASSERT_NO_FATAL_FAILURE(command(mEffect, CommandId::START));
-    ASSERT_NO_FATAL_FAILURE(expectState(mEffect, State::PROCESSING));
-
-    std::vector<float> buffer;
-    EXPECT_NO_FATAL_FAILURE(EffectHelper::allocateInputData(common, inputMQ, buffer));
-    EXPECT_NO_FATAL_FAILURE(EffectHelper::writeToFmq(statusMQ, inputMQ, buffer, mVersion));
-    EXPECT_NO_FATAL_FAILURE(
-            EffectHelper::readFromFmq(statusMQ, 1, outputMQ, buffer.size(), buffer));
-
-    ASSERT_NO_FATAL_FAILURE(command(mEffect, CommandId::STOP));
-    ASSERT_NO_FATAL_FAILURE(expectState(mEffect, State::IDLE));
-    EXPECT_NO_FATAL_FAILURE(EffectHelper::readFromFmq(statusMQ, 0, outputMQ, 0, buffer));
-
+    std::vector<float> inputBuffer(mInputSamples), outputBuffer(mOutputSamples);
+    ASSERT_NO_FATAL_FAILURE(
+            processAndWriteToOutput(inputBuffer, outputBuffer, mEffect, &ret, mVersion));
     ASSERT_NO_FATAL_FAILURE(close(mEffect));
     ASSERT_NO_FATAL_FAILURE(destroy(mFactory, mEffect));
 }
@@ -705,31 +629,12 @@
             kInputFrameCount /* iFrameCount */, kOutputFrameCount /* oFrameCount */);
     IEffect::OpenEffectReturn ret;
     ASSERT_NO_FATAL_FAILURE(open(mEffect, common, std::nullopt /* specific */, &ret, EX_NONE));
-    auto statusMQ = std::make_unique<EffectHelper::StatusMQ>(ret.statusMQ);
-    ASSERT_TRUE(statusMQ->isValid());
-    auto inputMQ = std::make_unique<EffectHelper::DataMQ>(ret.inputDataMQ);
-    ASSERT_TRUE(inputMQ->isValid());
-    auto outputMQ = std::make_unique<EffectHelper::DataMQ>(ret.outputDataMQ);
-    ASSERT_TRUE(outputMQ->isValid());
 
-    std::vector<float> buffer;
-    ASSERT_NO_FATAL_FAILURE(command(mEffect, CommandId::START));
-    ASSERT_NO_FATAL_FAILURE(expectState(mEffect, State::PROCESSING));
-    ASSERT_NO_FATAL_FAILURE(command(mEffect, CommandId::STOP));
-    ASSERT_NO_FATAL_FAILURE(expectState(mEffect, State::IDLE));
-    EXPECT_NO_FATAL_FAILURE(
-            EffectHelper::readFromFmq(statusMQ, 0, outputMQ, buffer.size(), buffer));
-    ASSERT_NO_FATAL_FAILURE(command(mEffect, CommandId::START));
-    ASSERT_NO_FATAL_FAILURE(expectState(mEffect, State::PROCESSING));
-
-    EXPECT_NO_FATAL_FAILURE(EffectHelper::allocateInputData(common, inputMQ, buffer));
-    EXPECT_NO_FATAL_FAILURE(EffectHelper::writeToFmq(statusMQ, inputMQ, buffer, mVersion));
-    EXPECT_NO_FATAL_FAILURE(
-            EffectHelper::readFromFmq(statusMQ, 1, outputMQ, buffer.size(), buffer));
-
-    ASSERT_NO_FATAL_FAILURE(command(mEffect, CommandId::STOP));
-    ASSERT_NO_FATAL_FAILURE(expectState(mEffect, State::IDLE));
-    EXPECT_NO_FATAL_FAILURE(EffectHelper::readFromFmq(statusMQ, 0, outputMQ, 0, buffer));
+    std::vector<float> inputBuffer(mInputSamples), outputBuffer(mOutputSamples);
+    ASSERT_NO_FATAL_FAILURE(
+            processAndWriteToOutput(inputBuffer, outputBuffer, mEffect, &ret, mVersion));
+    ASSERT_NO_FATAL_FAILURE(
+            processAndWriteToOutput(inputBuffer, outputBuffer, mEffect, &ret, mVersion));
 
     ASSERT_NO_FATAL_FAILURE(close(mEffect));
     ASSERT_NO_FATAL_FAILURE(destroy(mFactory, mEffect));
@@ -751,18 +656,10 @@
     ASSERT_NO_FATAL_FAILURE(open(mEffect, common, std::nullopt /* specific */, &ret, EX_NONE));
     auto statusMQ = std::make_unique<EffectHelper::StatusMQ>(ret.statusMQ);
     ASSERT_TRUE(statusMQ->isValid());
-    auto inputMQ = std::make_unique<EffectHelper::DataMQ>(ret.inputDataMQ);
-    ASSERT_TRUE(inputMQ->isValid());
-    auto outputMQ = std::make_unique<EffectHelper::DataMQ>(ret.outputDataMQ);
-    ASSERT_TRUE(outputMQ->isValid());
 
-    std::vector<float> buffer;
-    ASSERT_NO_FATAL_FAILURE(command(mEffect, CommandId::START));
-    ASSERT_NO_FATAL_FAILURE(expectState(mEffect, State::PROCESSING));
-    EXPECT_NO_FATAL_FAILURE(EffectHelper::allocateInputData(common, inputMQ, buffer));
-    EXPECT_NO_FATAL_FAILURE(EffectHelper::writeToFmq(statusMQ, inputMQ, buffer, mVersion));
-    EXPECT_NO_FATAL_FAILURE(
-            EffectHelper::readFromFmq(statusMQ, 1, outputMQ, buffer.size(), buffer));
+    std::vector<float> inputBuffer(mInputSamples), outputBuffer(mOutputSamples);
+    ASSERT_NO_FATAL_FAILURE(
+            processAndWriteToOutput(inputBuffer, outputBuffer, mEffect, &ret, mVersion));
 
     // set a new common parameter with different IO frameCount, reopen
     Parameter::Id id = Parameter::Id::make<Parameter::Id::commonTag>(Parameter::common);
@@ -771,22 +668,12 @@
     ASSERT_NO_FATAL_FAILURE(setAndGetParameter(id, Parameter::make<Parameter::common>(common)));
     ASSERT_TRUE(statusMQ->isValid());
     expectDataMqUpdateEventFlag(statusMQ);
-    EXPECT_IS_OK(mEffect->reopen(&ret));
-    inputMQ = std::make_unique<EffectHelper::DataMQ>(ret.inputDataMQ);
-    outputMQ = std::make_unique<EffectHelper::DataMQ>(ret.outputDataMQ);
-    ASSERT_TRUE(statusMQ->isValid());
-    ASSERT_TRUE(inputMQ->isValid());
-    ASSERT_TRUE(outputMQ->isValid());
+    ASSERT_NO_FATAL_FAILURE(reopen(mEffect, common, &ret));
 
-    // verify data consume again
-    EXPECT_NO_FATAL_FAILURE(EffectHelper::allocateInputData(common, inputMQ, buffer));
-    EXPECT_NO_FATAL_FAILURE(EffectHelper::writeToFmq(statusMQ, inputMQ, buffer, mVersion));
-    EXPECT_NO_FATAL_FAILURE(
-            EffectHelper::readFromFmq(statusMQ, 1, outputMQ, buffer.size(), buffer));
-
-    ASSERT_NO_FATAL_FAILURE(command(mEffect, CommandId::STOP));
-    ASSERT_NO_FATAL_FAILURE(expectState(mEffect, State::IDLE));
-    EXPECT_NO_FATAL_FAILURE(EffectHelper::readFromFmq(statusMQ, 0, outputMQ, 0, buffer));
+    inputBuffer.resize(mInputSamples);
+    outputBuffer.resize(mOutputSamples);
+    ASSERT_NO_FATAL_FAILURE(
+            processAndWriteToOutput(inputBuffer, outputBuffer, mEffect, &ret, mVersion));
 
     ASSERT_NO_FATAL_FAILURE(close(mEffect));
     ASSERT_NO_FATAL_FAILURE(destroy(mFactory, mEffect));
@@ -809,19 +696,15 @@
     auto outputMQ = std::make_unique<EffectHelper::DataMQ>(ret.outputDataMQ);
     ASSERT_TRUE(outputMQ->isValid());
 
-    std::vector<float> buffer;
-    EXPECT_NO_FATAL_FAILURE(EffectHelper::allocateInputData(common, inputMQ, buffer));
-    EXPECT_NO_FATAL_FAILURE(EffectHelper::writeToFmq(statusMQ, inputMQ, buffer, mVersion));
+    std::vector<float> inputBuffer(mInputSamples), outputBuffer(mOutputSamples);
+    ASSERT_NO_FATAL_FAILURE(
+            processAndWriteToOutput(inputBuffer, outputBuffer, mEffect, &ret, mVersion));
 
+    EXPECT_NO_FATAL_FAILURE(EffectHelper::writeToFmq(statusMQ, inputMQ, inputBuffer, mVersion));
     ASSERT_NO_FATAL_FAILURE(command(mEffect, CommandId::START));
-    ASSERT_NO_FATAL_FAILURE(expectState(mEffect, State::PROCESSING));
-
     EXPECT_NO_FATAL_FAILURE(
-            EffectHelper::readFromFmq(statusMQ, 1, outputMQ, buffer.size(), buffer));
-
+            EffectHelper::readFromFmq(statusMQ, 1, outputMQ, outputBuffer.size(), outputBuffer));
     ASSERT_NO_FATAL_FAILURE(command(mEffect, CommandId::STOP));
-    ASSERT_NO_FATAL_FAILURE(expectState(mEffect, State::IDLE));
-
     ASSERT_NO_FATAL_FAILURE(close(mEffect));
     ASSERT_NO_FATAL_FAILURE(destroy(mFactory, mEffect));
 }
@@ -836,31 +719,10 @@
             kInputFrameCount /* iFrameCount */, kOutputFrameCount /* oFrameCount */);
     IEffect::OpenEffectReturn ret;
     ASSERT_NO_FATAL_FAILURE(open(mEffect, common, std::nullopt /* specific */, &ret, EX_NONE));
-    auto statusMQ = std::make_unique<EffectHelper::StatusMQ>(ret.statusMQ);
-    ASSERT_TRUE(statusMQ->isValid());
-    auto inputMQ = std::make_unique<EffectHelper::DataMQ>(ret.inputDataMQ);
-    ASSERT_TRUE(inputMQ->isValid());
-    auto outputMQ = std::make_unique<EffectHelper::DataMQ>(ret.outputDataMQ);
-    ASSERT_TRUE(outputMQ->isValid());
+    std::vector<float> inputBuffer(mInputSamples), outputBuffer(mOutputSamples);
 
-    std::vector<float> buffer;
-    EXPECT_NO_FATAL_FAILURE(EffectHelper::allocateInputData(common, inputMQ, buffer));
-    EXPECT_NO_FATAL_FAILURE(EffectHelper::writeToFmq(statusMQ, inputMQ, buffer, mVersion));
-    EXPECT_NO_FATAL_FAILURE(EffectHelper::readFromFmq(statusMQ, 0, outputMQ, 0, buffer));
-
-    ASSERT_NO_FATAL_FAILURE(command(mEffect, CommandId::START));
-    ASSERT_NO_FATAL_FAILURE(expectState(mEffect, State::PROCESSING));
-
-    EXPECT_NO_FATAL_FAILURE(
-            EffectHelper::readFromFmq(statusMQ, 1, outputMQ, buffer.size(), buffer));
-
-    EXPECT_NO_FATAL_FAILURE(EffectHelper::writeToFmq(statusMQ, inputMQ, buffer, mVersion));
-    EXPECT_NO_FATAL_FAILURE(
-            EffectHelper::readFromFmq(statusMQ, 1, outputMQ, buffer.size(), buffer));
-
-    ASSERT_NO_FATAL_FAILURE(command(mEffect, CommandId::STOP));
-    ASSERT_NO_FATAL_FAILURE(expectState(mEffect, State::IDLE));
-    EXPECT_NO_FATAL_FAILURE(EffectHelper::readFromFmq(statusMQ, 0, outputMQ, 0, buffer));
+    ASSERT_NO_FATAL_FAILURE(
+            processAndWriteToOutput(inputBuffer, outputBuffer, mEffect, &ret, mVersion, 2));
 
     ASSERT_NO_FATAL_FAILURE(close(mEffect));
     ASSERT_NO_FATAL_FAILURE(destroy(mFactory, mEffect));
@@ -876,33 +738,12 @@
             kInputFrameCount /* iFrameCount */, kOutputFrameCount /* oFrameCount */);
     IEffect::OpenEffectReturn ret;
     ASSERT_NO_FATAL_FAILURE(open(mEffect, common, std::nullopt /* specific */, &ret, EX_NONE));
-    auto statusMQ = std::make_unique<EffectHelper::StatusMQ>(ret.statusMQ);
-    ASSERT_TRUE(statusMQ->isValid());
-    auto inputMQ = std::make_unique<EffectHelper::DataMQ>(ret.inputDataMQ);
-    ASSERT_TRUE(inputMQ->isValid());
-    auto outputMQ = std::make_unique<EffectHelper::DataMQ>(ret.outputDataMQ);
-    ASSERT_TRUE(outputMQ->isValid());
+    std::vector<float> inputBuffer(mInputSamples), outputBuffer(mOutputSamples);
 
-    ASSERT_NO_FATAL_FAILURE(command(mEffect, CommandId::START));
-    ASSERT_NO_FATAL_FAILURE(expectState(mEffect, State::PROCESSING));
-    std::vector<float> buffer;
-    EXPECT_NO_FATAL_FAILURE(EffectHelper::allocateInputData(common, inputMQ, buffer));
-    EXPECT_NO_FATAL_FAILURE(EffectHelper::writeToFmq(statusMQ, inputMQ, buffer, mVersion));
-    EXPECT_NO_FATAL_FAILURE(
-            EffectHelper::readFromFmq(statusMQ, 1, outputMQ, buffer.size(), buffer));
-
-    ASSERT_NO_FATAL_FAILURE(command(mEffect, CommandId::STOP));
-    ASSERT_NO_FATAL_FAILURE(expectState(mEffect, State::IDLE));
-    EXPECT_NO_FATAL_FAILURE(EffectHelper::writeToFmq(statusMQ, inputMQ, buffer, mVersion));
-    EXPECT_NO_FATAL_FAILURE(EffectHelper::readFromFmq(statusMQ, 0, outputMQ, 0, buffer));
-
-    ASSERT_NO_FATAL_FAILURE(command(mEffect, CommandId::START));
-    ASSERT_NO_FATAL_FAILURE(expectState(mEffect, State::PROCESSING));
-    EXPECT_NO_FATAL_FAILURE(
-            EffectHelper::readFromFmq(statusMQ, 1, outputMQ, buffer.size(), buffer));
-
-    ASSERT_NO_FATAL_FAILURE(command(mEffect, CommandId::STOP));
-    ASSERT_NO_FATAL_FAILURE(expectState(mEffect, State::IDLE));
+    ASSERT_NO_FATAL_FAILURE(
+            processAndWriteToOutput(inputBuffer, outputBuffer, mEffect, &ret, mVersion, 2));
+    ASSERT_NO_FATAL_FAILURE(
+            processAndWriteToOutput(inputBuffer, outputBuffer, mEffect, &ret, mVersion, 2));
 
     ASSERT_NO_FATAL_FAILURE(close(mEffect));
     ASSERT_NO_FATAL_FAILURE(destroy(mFactory, mEffect));
@@ -918,6 +759,7 @@
             kInputFrameCount /* iFrameCount */, kOutputFrameCount /* oFrameCount */);
     IEffect::OpenEffectReturn ret;
     ASSERT_NO_FATAL_FAILURE(open(mEffect, common, std::nullopt /* specific */, &ret, EX_NONE));
+    std::vector<float> inputBuffer(mInputSamples), outputBuffer(mOutputSamples);
     ASSERT_NO_FATAL_FAILURE(close(mEffect));
 
     auto statusMQ = std::make_unique<EffectHelper::StatusMQ>(ret.statusMQ);
@@ -927,10 +769,8 @@
     auto outputMQ = std::make_unique<EffectHelper::DataMQ>(ret.outputDataMQ);
     ASSERT_TRUE(outputMQ->isValid());
 
-    std::vector<float> buffer;
-    EXPECT_NO_FATAL_FAILURE(EffectHelper::allocateInputData(common, inputMQ, buffer));
-    EXPECT_NO_FATAL_FAILURE(EffectHelper::writeToFmq(statusMQ, inputMQ, buffer, mVersion));
-    EXPECT_NO_FATAL_FAILURE(EffectHelper::readFromFmq(statusMQ, 0, outputMQ, 0, buffer));
+    EXPECT_NO_FATAL_FAILURE(EffectHelper::writeToFmq(statusMQ, inputMQ, inputBuffer, mVersion));
+    EXPECT_NO_FATAL_FAILURE(EffectHelper::readFromFmq(statusMQ, 0, outputMQ, 0, outputBuffer));
 
     ASSERT_NO_FATAL_FAILURE(destroy(mFactory, mEffect));
 }
@@ -951,42 +791,19 @@
     IEffect::OpenEffectReturn ret1, ret2;
     ASSERT_NO_FATAL_FAILURE(open(effect1, common1, std::nullopt /* specific */, &ret1, EX_NONE));
     ASSERT_NO_FATAL_FAILURE(open(effect2, common2, std::nullopt /* specific */, &ret2, EX_NONE));
-    ASSERT_NO_FATAL_FAILURE(command(effect1, CommandId::START));
-    ASSERT_NO_FATAL_FAILURE(expectState(effect1, State::PROCESSING));
-    ASSERT_NO_FATAL_FAILURE(command(effect2, CommandId::START));
-    ASSERT_NO_FATAL_FAILURE(expectState(effect2, State::PROCESSING));
+    std::vector<float> inputBuffer1(kInputFrameCount * mInputFrameSize / sizeof(float)),
+            outputBuffer1(kOutputFrameCount * mOutputFrameSize / sizeof(float));
+    std::vector<float> inputBuffer2(2 * kInputFrameCount * mInputFrameSize / sizeof(float)),
+            outputBuffer2(2 * kOutputFrameCount * mOutputFrameSize / sizeof(float));
 
-    auto statusMQ1 = std::make_unique<EffectHelper::StatusMQ>(ret1.statusMQ);
-    ASSERT_TRUE(statusMQ1->isValid());
-    auto inputMQ1 = std::make_unique<EffectHelper::DataMQ>(ret1.inputDataMQ);
-    ASSERT_TRUE(inputMQ1->isValid());
-    auto outputMQ1 = std::make_unique<EffectHelper::DataMQ>(ret1.outputDataMQ);
-    ASSERT_TRUE(outputMQ1->isValid());
+    ASSERT_NO_FATAL_FAILURE(
+            processAndWriteToOutput(inputBuffer1, outputBuffer1, effect1, &ret1, mVersion, 2));
+    ASSERT_NO_FATAL_FAILURE(
+            processAndWriteToOutput(inputBuffer2, outputBuffer2, effect2, &ret2, mVersion, 2));
 
-    std::vector<float> buffer1, buffer2;
-    EXPECT_NO_FATAL_FAILURE(EffectHelper::allocateInputData(common1, inputMQ1, buffer1));
-    EXPECT_NO_FATAL_FAILURE(EffectHelper::writeToFmq(statusMQ1, inputMQ1, buffer1, mVersion));
-    EXPECT_NO_FATAL_FAILURE(
-            EffectHelper::readFromFmq(statusMQ1, 1, outputMQ1, buffer1.size(), buffer1));
-
-    auto statusMQ2 = std::make_unique<EffectHelper::StatusMQ>(ret2.statusMQ);
-    ASSERT_TRUE(statusMQ2->isValid());
-    auto inputMQ2 = std::make_unique<EffectHelper::DataMQ>(ret2.inputDataMQ);
-    ASSERT_TRUE(inputMQ2->isValid());
-    auto outputMQ2 = std::make_unique<EffectHelper::DataMQ>(ret2.outputDataMQ);
-    ASSERT_TRUE(outputMQ2->isValid());
-    EXPECT_NO_FATAL_FAILURE(EffectHelper::allocateInputData(common2, inputMQ2, buffer2));
-    EXPECT_NO_FATAL_FAILURE(EffectHelper::writeToFmq(statusMQ2, inputMQ2, buffer2, mVersion));
-    EXPECT_NO_FATAL_FAILURE(
-            EffectHelper::readFromFmq(statusMQ2, 1, outputMQ2, buffer2.size(), buffer2));
-
-    ASSERT_NO_FATAL_FAILURE(command(effect1, CommandId::STOP));
-    ASSERT_NO_FATAL_FAILURE(expectState(effect1, State::IDLE));
     ASSERT_NO_FATAL_FAILURE(close(effect1));
     ASSERT_NO_FATAL_FAILURE(destroy(mFactory, effect1));
 
-    ASSERT_NO_FATAL_FAILURE(command(effect2, CommandId::STOP));
-    ASSERT_NO_FATAL_FAILURE(expectState(effect2, State::IDLE));
     ASSERT_NO_FATAL_FAILURE(close(effect2));
     ASSERT_NO_FATAL_FAILURE(destroy(mFactory, effect2));
 }