diff --git a/audio/aidl/default/include/effect-impl/EffectContext.h b/audio/aidl/default/include/effect-impl/EffectContext.h
index 36492ec..f608e12 100644
--- a/audio/aidl/default/include/effect-impl/EffectContext.h
+++ b/audio/aidl/default/include/effect-impl/EffectContext.h
@@ -15,6 +15,10 @@
  */
 
 #pragma once
+#include <Utils.h>
+#include <android-base/logging.h>
+#include <utils/Log.h>
+#include <cstddef>
 #include <cstdint>
 #include <memory>
 #include <utility>
@@ -22,6 +26,7 @@
 
 #include <aidl/android/hardware/audio/effect/BnEffect.h>
 #include <fmq/AidlMessageQueue.h>
+#include "EffectTypes.h"
 
 namespace aidl::android::hardware::audio::effect {
 
@@ -31,35 +36,122 @@
             IEffect::Status, ::aidl::android::hardware::common::fmq::SynchronizedReadWrite>
             StatusMQ;
     typedef ::android::AidlMessageQueue<
-            int8_t, ::aidl::android::hardware::common::fmq::SynchronizedReadWrite>
+            float, ::aidl::android::hardware::common::fmq::SynchronizedReadWrite>
             DataMQ;
 
-    EffectContext(size_t statusDepth, size_t inBufferSize, size_t outBufferSize) {
+    EffectContext(size_t statusDepth, const Parameter::Common& common) {
+        mSessionId = common.session;
+        auto& input = common.input;
+        auto& output = common.output;
+
+        LOG_ALWAYS_FATAL_IF(
+                input.base.format.pcm != aidl::android::media::audio::common::PcmType::FLOAT_32_BIT,
+                "inputFormatNotFloat");
+        LOG_ALWAYS_FATAL_IF(output.base.format.pcm !=
+                                    aidl::android::media::audio::common::PcmType::FLOAT_32_BIT,
+                            "outputFormatNotFloat");
+        mInputFrameSize = ::android::hardware::audio::common::getFrameSizeInBytes(
+                input.base.format, input.base.channelMask);
+        mOutputFrameSize = ::android::hardware::audio::common::getFrameSizeInBytes(
+                output.base.format, output.base.channelMask);
+        // in/outBuffer size in float (FMQ data format defined for DataMQ)
+        size_t inBufferSizeInFloat = input.frameCount * mInputFrameSize / sizeof(float);
+        size_t outBufferSizeInFloat = output.frameCount * mOutputFrameSize / sizeof(float);
+
         mStatusMQ = std::make_shared<StatusMQ>(statusDepth, true /*configureEventFlagWord*/);
-        mInputMQ = std::make_shared<DataMQ>(inBufferSize);
-        mOutputMQ = std::make_shared<DataMQ>(outBufferSize);
+        mInputMQ = std::make_shared<DataMQ>(inBufferSizeInFloat);
+        mOutputMQ = std::make_shared<DataMQ>(outBufferSizeInFloat);
 
         if (!mStatusMQ->isValid() || !mInputMQ->isValid() || !mOutputMQ->isValid()) {
             LOG(ERROR) << __func__ << " created invalid FMQ";
         }
-        mWorkBuffer.reserve(std::max(inBufferSize, outBufferSize));
-    };
+        mWorkBuffer.reserve(std::max(inBufferSizeInFloat, outBufferSizeInFloat));
+    }
+    virtual ~EffectContext() {}
 
-    std::shared_ptr<StatusMQ> getStatusFmq() { return mStatusMQ; };
-    std::shared_ptr<DataMQ> getInputDataFmq() { return mInputMQ; };
-    std::shared_ptr<DataMQ> getOutputDataFmq() { return mOutputMQ; };
+    std::shared_ptr<StatusMQ> getStatusFmq() { return mStatusMQ; }
+    std::shared_ptr<DataMQ> getInputDataFmq() { return mInputMQ; }
+    std::shared_ptr<DataMQ> getOutputDataFmq() { return mOutputMQ; }
 
-    int8_t* getWorkBuffer() { return static_cast<int8_t*>(mWorkBuffer.data()); };
+    float* getWorkBuffer() { return static_cast<float*>(mWorkBuffer.data()); }
     // TODO: update with actual available size
-    size_t availableToRead() { return mWorkBuffer.capacity(); };
-    size_t availableToWrite() { return mWorkBuffer.capacity(); };
+    size_t availableToRead() { return mWorkBuffer.capacity(); }
+    size_t availableToWrite() { return mWorkBuffer.capacity(); }
+
+    // reset buffer status by abandon all data and status in FMQ
+    void resetBuffer() {
+        auto buffer = getWorkBuffer();
+        std::vector<IEffect::Status> status(mStatusMQ->availableToRead());
+        mInputMQ->read(buffer, mInputMQ->availableToRead());
+        mOutputMQ->read(buffer, mOutputMQ->availableToRead());
+        mStatusMQ->read(status.data(), mStatusMQ->availableToRead());
+    }
+
+    void dupeFmq(IEffect::OpenEffectReturn* effectRet) {
+        if (effectRet) {
+            effectRet->statusMQ = getStatusFmq()->dupeDesc();
+            effectRet->inputDataMQ = getInputDataFmq()->dupeDesc();
+            effectRet->outputDataMQ = getOutputDataFmq()->dupeDesc();
+        }
+    }
+    size_t getInputFrameSize() { return mInputFrameSize; }
+    size_t getOutputFrameSize() { return mOutputFrameSize; }
+    int getSessionId() { return mSessionId; }
+
+    virtual RetCode setOutputDevice(
+            const aidl::android::media::audio::common::AudioDeviceDescription& device) {
+        mOutputDevice = device;
+        return RetCode::SUCCESS;
+    }
+    virtual aidl::android::media::audio::common::AudioDeviceDescription getOutputDevice() {
+        return mOutputDevice;
+    }
+
+    virtual RetCode setAudioMode(const aidl::android::media::audio::common::AudioMode& mode) {
+        mMode = mode;
+        return RetCode::SUCCESS;
+    }
+    virtual aidl::android::media::audio::common::AudioMode getAudioMode() { return mMode; }
+
+    virtual RetCode setAudioSource(const aidl::android::media::audio::common::AudioSource& source) {
+        mSource = source;
+        return RetCode::SUCCESS;
+    }
+    virtual aidl::android::media::audio::common::AudioSource getAudioSource() { return mSource; }
+
+    virtual RetCode setVolumeStereo(const Parameter::VolumeStereo& volumeStereo) {
+        mVolumeStereo = volumeStereo;
+        return RetCode::SUCCESS;
+    }
+    virtual Parameter::VolumeStereo getVolumeStereo() { return mVolumeStereo; }
+
+    virtual RetCode setCommon(const Parameter::Common& common) {
+        mCommon = common;
+        LOG(ERROR) << __func__ << mCommon.toString();
+        return RetCode::SUCCESS;
+    }
+    virtual Parameter::Common getCommon() {
+        LOG(ERROR) << __func__ << mCommon.toString();
+        return mCommon;
+    }
+
+  protected:
+    // common parameters
+    int mSessionId = INVALID_AUDIO_SESSION_ID;
+    size_t mInputFrameSize, mOutputFrameSize;
+    Parameter::Common mCommon;
+    aidl::android::media::audio::common::AudioDeviceDescription mOutputDevice;
+    aidl::android::media::audio::common::AudioMode mMode;
+    aidl::android::media::audio::common::AudioSource mSource;
+    Parameter::VolumeStereo mVolumeStereo;
 
   private:
+    // fmq and buffers
     std::shared_ptr<StatusMQ> mStatusMQ;
     std::shared_ptr<DataMQ> mInputMQ;
     std::shared_ptr<DataMQ> mOutputMQ;
     // TODO handle effect process input and output
     // work buffer set by effect instances, the access and update are in same thread
-    std::vector<int8_t> mWorkBuffer;
+    std::vector<float> mWorkBuffer;
 };
 }  // namespace aidl::android::hardware::audio::effect
diff --git a/audio/aidl/default/include/effect-impl/EffectImpl.h b/audio/aidl/default/include/effect-impl/EffectImpl.h
new file mode 100644
index 0000000..cb395b7
--- /dev/null
+++ b/audio/aidl/default/include/effect-impl/EffectImpl.h
@@ -0,0 +1,86 @@
+/*
+ * Copyright (C) 2022 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#pragma once
+#include <aidl/android/hardware/audio/effect/BnEffect.h>
+#include <fmq/AidlMessageQueue.h>
+#include <cstdlib>
+#include <memory>
+#include <mutex>
+
+#include "EffectTypes.h"
+#include "effect-impl/EffectContext.h"
+#include "effect-impl/EffectTypes.h"
+#include "effect-impl/EffectWorker.h"
+
+namespace aidl::android::hardware::audio::effect {
+
+class EffectImpl : public BnEffect, public EffectWorker {
+  public:
+    EffectImpl() { LOG(DEBUG) << __func__; }
+    ~EffectImpl() {
+        cleanUp();
+        LOG(DEBUG) << __func__;
+    }
+
+    /**
+     * Each effect implementation CAN override these methods if necessary
+     * If you would like implement IEffect::open completely, override EffectImpl::open(), if you
+     * want to keep most of EffectImpl logic but have a little customize, try override openImpl().
+     * openImpl() will be called at the beginning of EffectImpl::open() without lock protection.
+     *
+     * Same for closeImpl().
+     */
+    virtual ndk::ScopedAStatus open(const Parameter::Common& common,
+                                    const std::optional<Parameter::Specific>& specific,
+                                    OpenEffectReturn* ret) override;
+    virtual ndk::ScopedAStatus close() override;
+    virtual ndk::ScopedAStatus command(CommandId id) override;
+    virtual ndk::ScopedAStatus commandStart() { return ndk::ScopedAStatus::ok(); }
+    virtual ndk::ScopedAStatus commandStop() { return ndk::ScopedAStatus::ok(); }
+    virtual ndk::ScopedAStatus commandReset() { return ndk::ScopedAStatus::ok(); }
+
+    virtual ndk::ScopedAStatus getState(State* state) override;
+    virtual ndk::ScopedAStatus setParameter(const Parameter& param) override;
+    virtual ndk::ScopedAStatus getParameter(const Parameter::Id& id, Parameter* param) override;
+    virtual IEffect::Status effectProcessImpl(float* in, float* out, int process) override;
+
+    virtual ndk::ScopedAStatus setParameterCommon(const Parameter& param);
+    virtual ndk::ScopedAStatus getParameterCommon(const Parameter::Tag& tag, Parameter* param);
+
+    /* Methods MUST be implemented by each effect instances */
+    virtual ndk::ScopedAStatus getDescriptor(Descriptor* desc) = 0;
+    virtual ndk::ScopedAStatus setParameterSpecific(const Parameter::Specific& specific) = 0;
+    virtual ndk::ScopedAStatus getParameterSpecific(const Parameter::Id& id,
+                                                    Parameter::Specific* specific) = 0;
+    virtual std::shared_ptr<EffectContext> createContext(const Parameter::Common& common) = 0;
+    virtual RetCode releaseContext() = 0;
+
+  protected:
+    /*
+     * Lock is required if effectProcessImpl (which is running in an independent thread) needs to
+     * access state and parameters.
+     */
+    std::mutex mMutex;
+    State mState GUARDED_BY(mMutex) = State::INIT;
+
+    IEffect::Status status(binder_status_t status, size_t consumed, size_t produced);
+
+  private:
+    void cleanUp();
+    std::shared_ptr<EffectContext> mContext GUARDED_BY(mMutex);
+};
+}  // namespace aidl::android::hardware::audio::effect
diff --git a/audio/aidl/default/include/effect-impl/EffectTypes.h b/audio/aidl/default/include/effect-impl/EffectTypes.h
index 46cfc0c..edce26b 100644
--- a/audio/aidl/default/include/effect-impl/EffectTypes.h
+++ b/audio/aidl/default/include/effect-impl/EffectTypes.h
@@ -18,6 +18,19 @@
 #include <ostream>
 #include <string>
 
+#include <aidl/android/hardware/audio/effect/BnEffect.h>
+
+typedef binder_exception_t (*EffectCreateFunctor)(
+        const ::aidl::android::media::audio::common::AudioUuid*,
+        std::shared_ptr<aidl::android::hardware::audio::effect::IEffect>*);
+typedef binder_exception_t (*EffectDestroyFunctor)(
+        const std::shared_ptr<aidl::android::hardware::audio::effect::IEffect>&);
+
+struct effect_dl_interface_s {
+    EffectCreateFunctor createEffectFunc;
+    EffectDestroyFunctor destroyEffectFunc;
+};
+
 namespace aidl::android::hardware::audio::effect {
 
 enum class RetCode {
@@ -26,9 +39,12 @@
     ERROR_THREAD,            /* Effect thread error */
     ERROR_NULL_POINTER,      /* NULL pointer */
     ERROR_ALIGNMENT_ERROR,   /* Memory alignment error */
-    ERROR_BLOCK_SIZE_EXCEED  /* Maximum block size exceeded */
+    ERROR_BLOCK_SIZE_EXCEED, /* Maximum block size exceeded */
+    ERROR_EFFECT_LIB_ERROR
 };
 
+static const int INVALID_AUDIO_SESSION_ID = -1;
+
 inline std::ostream& operator<<(std::ostream& out, const RetCode& code) {
     switch (code) {
         case RetCode::SUCCESS:
@@ -43,9 +59,46 @@
             return out << "ERROR_ALIGNMENT_ERROR";
         case RetCode::ERROR_BLOCK_SIZE_EXCEED:
             return out << "ERROR_BLOCK_SIZE_EXCEED";
+        case RetCode::ERROR_EFFECT_LIB_ERROR:
+            return out << "ERROR_EFFECT_LIB_ERROR";
     }
 
     return out << "EnumError: " << code;
 }
 
+#define RETURN_IF_ASTATUS_NOT_OK(status, message)                                              \
+    do {                                                                                       \
+        const ::ndk::ScopedAStatus curr_status = (status);                                     \
+        if (!curr_status.isOk()) {                                                             \
+            LOG(ERROR) << __func__ << ":" << __LINE__                                          \
+                       << "return with status: " << curr_status.getDescription() << (message); \
+            return ndk::ScopedAStatus::fromExceptionCodeWithMessage(                           \
+                    curr_status.getExceptionCode(), (message));                                \
+        }                                                                                      \
+    } while (0)
+
+#define RETURN_IF(expr, exception, message)                                                  \
+    do {                                                                                     \
+        if (expr) {                                                                          \
+            LOG(ERROR) << __func__ << ":" << __LINE__ << " return with expr " << #expr;      \
+            return ndk::ScopedAStatus::fromExceptionCodeWithMessage((exception), (message)); \
+        }                                                                                    \
+    } while (0)
+
+#define RETURN_OK_IF(expr)                                                             \
+    do {                                                                               \
+        if (expr) {                                                                    \
+            LOG(INFO) << __func__ << ":" << __LINE__ << " return with expr " << #expr; \
+            return ndk::ScopedAStatus::ok();                                           \
+        }                                                                              \
+    } while (0)
+
+#define RETURN_VALUE_IF(expr, ret, log)                                                          \
+    do {                                                                                         \
+        if (expr) {                                                                              \
+            LOG(ERROR) << __func__ << ":" << __LINE__ << " return with expr " << #expr << (log); \
+            return ret;                                                                          \
+        }                                                                                        \
+    } while (0)
+
 }  // namespace aidl::android::hardware::audio::effect
diff --git a/audio/aidl/default/include/effect-impl/EffectUUID.h b/audio/aidl/default/include/effect-impl/EffectUUID.h
index 48b7137..767cf6c 100644
--- a/audio/aidl/default/include/effect-impl/EffectUUID.h
+++ b/audio/aidl/default/include/effect-impl/EffectUUID.h
@@ -46,11 +46,124 @@
                                               0xbb17,
                                               {0x00, 0x02, 0xa5, 0xd5, 0xc5, 0x1b}};
 
-// Visualizer type UUID.
-static const AudioUuid VisualizerTypeUUID = {static_cast<int32_t>(0x1d4033c0),
-                                             0x8557,
-                                             0x11df,
-                                             0x9f2d,
-                                             {0x00, 0x02, 0xa5, 0xd5, 0xc5, 0x1b}};
+// Equalizer bundle implementation UUID.
+static const AudioUuid EqualizerBundleImplUUID = {static_cast<int32_t>(0xce772f20),
+                                                  0x847d,
+                                                  0x11df,
+                                                  0xbb17,
+                                                  {0x00, 0x02, 0xa5, 0xd5, 0xc5, 0x1b}};
+
+// fa8184a4-588b-11ed-9b6a-0242ac120002
+static const AudioUuid BassBoostTypeUUID = {static_cast<int32_t>(0xfa8184a4),
+                                            0x588b,
+                                            0x11ed,
+                                            0x9b6a,
+                                            {0x02, 0x42, 0xac, 0x12, 0x00, 0x02}};
+// fa8181f2-588b-11ed-9b6a-0242ac120002
+static const AudioUuid BassBoostSwImplUUID = {static_cast<int32_t>(0xfa8181f2),
+                                              0x588b,
+                                              0x11ed,
+                                              0x9b6a,
+                                              {0x02, 0x42, 0xac, 0x12, 0x00, 0x02}};
+// fa81862a-588b-11ed-9b6a-0242ac120002
+static const AudioUuid DownmixTypeUUID = {static_cast<int32_t>(0xfa81862a),
+                                          0x588b,
+                                          0x11ed,
+                                          0x9b6a,
+                                          {0x02, 0x42, 0xac, 0x12, 0x00, 0x02}};
+// fa8187ba-588b-11ed-9b6a-0242ac120002
+static const AudioUuid DownmixSwImplUUID = {static_cast<int32_t>(0xfa8187ba),
+                                            0x588b,
+                                            0x11ed,
+                                            0x9b6a,
+                                            {0x02, 0x42, 0xac, 0x12, 0x00, 0x02}};
+// fa818954-588b-11ed-9b6a-0242ac120002
+static const AudioUuid DynamicsProcessingTypeUUID = {static_cast<int32_t>(0xfa818954),
+                                                     0x588b,
+                                                     0x11ed,
+                                                     0x9b6a,
+                                                     {0x02, 0x42, 0xac, 0x12, 0x00, 0x02}};
+// fa818d78-588b-11ed-9b6a-0242ac120002
+static const AudioUuid DynamicsProcessingSwImplUUID = {static_cast<int32_t>(0xfa818d78),
+                                                       0x588b,
+                                                       0x11ed,
+                                                       0x9b6a,
+                                                       {0x02, 0x42, 0xac, 0x12, 0x00, 0x02}};
+// fa818f62-588b-11ed-9b6a-0242ac120002
+static const AudioUuid HapticGeneratorTypeUUID = {static_cast<int32_t>(0xfa818f62),
+                                                  0x588b,
+                                                  0x11ed,
+                                                  0x9b6a,
+                                                  {0x02, 0x42, 0xac, 0x12, 0x00, 0x02}};
+// fa819110-588b-11ed-9b6a-0242ac120002
+static const AudioUuid HapticGeneratorSwImplUUID = {static_cast<int32_t>(0xfa819110),
+                                                    0x588b,
+                                                    0x11ed,
+                                                    0x9b6a,
+                                                    {0x02, 0x42, 0xac, 0x12, 0x00, 0x02}};
+
+// fa8194a8-588b-11ed-9b6a-0242ac120002
+static const AudioUuid LoudnessEnhancerTypeUUID = {static_cast<int32_t>(0xfa8194a8),
+                                                   0x588b,
+                                                   0x11ed,
+                                                   0x9b6a,
+                                                   {0x02, 0x42, 0xac, 0x12, 0x00, 0x02}};
+// fa819610-588b-11ed-9b6a-0242ac120002
+static const AudioUuid LoudnessEnhancerSwImplUUID = {static_cast<int32_t>(0xfa819610),
+                                                     0x588b,
+                                                     0x11ed,
+                                                     0x9b6a,
+                                                     {0x02, 0x42, 0xac, 0x12, 0x00, 0x02}};
+// fa819886-588b-11ed-9b6a-0242ac120002
+static const AudioUuid ReverbTypeUUID = {static_cast<int32_t>(0xfa819886),
+                                         0x588b,
+                                         0x11ed,
+                                         0x9b6a,
+                                         {0x02, 0x42, 0xac, 0x12, 0x00, 0x02}};
+// fa8199c6-588b-11ed-9b6a-0242ac120002
+static const AudioUuid ReverbSwImplUUID = {static_cast<int32_t>(0xfa8199c6),
+                                           0x588b,
+                                           0x11ed,
+                                           0x9b6a,
+                                           {0x02, 0x42, 0xac, 0x12, 0x00, 0x02}};
+
+// fa819af2-588b-11ed-9b6a-0242ac120002
+static const AudioUuid VirtualizerTypeUUID = {static_cast<int32_t>(0xfa819af2),
+                                              0x588b,
+                                              0x11ed,
+                                              0x9b6a,
+                                              {0x02, 0x42, 0xac, 0x12, 0x00, 0x02}};
+// fa819d86-588b-11ed-9b6a-0242ac120002
+static const AudioUuid VirtualizerSwImplUUID = {static_cast<int32_t>(0xfa819d86),
+                                                0x588b,
+                                                0x11ed,
+                                                0x9b6a,
+                                                {0x02, 0x42, 0xac, 0x12, 0x00, 0x02}};
+
+// fa819f3e-588b-11ed-9b6a-0242ac120002
+static const AudioUuid VisualizerTypeUUID = {static_cast<int32_t>(0xfa819f3e),
+                                             0x588b,
+                                             0x11ed,
+                                             0x9b6a,
+                                             {0x02, 0x42, 0xac, 0x12, 0x00, 0x02}};
+// fa81a0f6-588b-11ed-9b6a-0242ac120002
+static const AudioUuid VisualizerSwImplUUID = {static_cast<int32_t>(0xfa81a0f6),
+                                               0x588b,
+                                               0x11ed,
+                                               0x9b6a,
+                                               {0x02, 0x42, 0xac, 0x12, 0x00, 0x02}};
+
+// fa81a2b8-588b-11ed-9b6a-0242ac120002
+static const AudioUuid VolumeTypeUUID = {static_cast<int32_t>(0xfa81a2b8),
+                                         0x588b,
+                                         0x11ed,
+                                         0x9b6a,
+                                         {0x02, 0x42, 0xac, 0x12, 0x00, 0x02}};
+// fa81a718-588b-11ed-9b6a-0242ac120002
+static const AudioUuid VolumeSwImplUUID = {static_cast<int32_t>(0xfa81a718),
+                                           0x588b,
+                                           0x11ed,
+                                           0x9b6a,
+                                           {0x02, 0x42, 0xac, 0x12, 0x00, 0x02}};
 
 }  // namespace aidl::android::hardware::audio::effect
diff --git a/audio/aidl/default/include/effect-impl/EffectWorker.h b/audio/aidl/default/include/effect-impl/EffectWorker.h
index 0fe69ff..a297937 100644
--- a/audio/aidl/default/include/effect-impl/EffectWorker.h
+++ b/audio/aidl/default/include/effect-impl/EffectWorker.h
@@ -36,34 +36,33 @@
 
     // handle FMQ and call effect implemented virtual function
     void process() override {
-        if (!mContext) {
-            LOG(ERROR) << __func__ << " invalid context!";
-            return;
-        }
+        RETURN_VALUE_IF(!mContext, void(), "nullContext");
         std::shared_ptr<EffectContext::StatusMQ> statusMQ = mContext->getStatusFmq();
         std::shared_ptr<EffectContext::DataMQ> inputMQ = mContext->getInputDataFmq();
         std::shared_ptr<EffectContext::DataMQ> outputMQ = mContext->getOutputDataFmq();
 
         // Only this worker will read from input data MQ and write to output data MQ.
-        auto readSize = inputMQ->availableToRead(), writeSize = outputMQ->availableToWrite();
-        if (readSize && writeSize) {
-            LOG(DEBUG) << __func__ << " available to read " << readSize << " available to write "
-                       << writeSize;
+        auto readSamples = inputMQ->availableToRead(), writeSamples = outputMQ->availableToWrite();
+        if (readSamples && writeSamples) {
+            auto processSamples = std::min(readSamples, writeSamples);
+            LOG(DEBUG) << __func__ << " available to read " << readSamples << " available to write "
+                       << writeSamples << " process " << processSamples;
+
             auto buffer = mContext->getWorkBuffer();
-            inputMQ->read(buffer, readSize);
-            IEffect::Status status = effectProcessImpl();
-            writeSize = std::min((int32_t)writeSize, status.fmqByteProduced);
-            outputMQ->write(buffer, writeSize);
+            inputMQ->read(buffer, processSamples);
+
+            IEffect::Status status = effectProcessImpl(buffer, buffer, processSamples);
+            outputMQ->write(buffer, status.fmqProduced);
             statusMQ->writeBlocking(&status, 1);
-            LOG(DEBUG) << __func__ << " done processing, effect consumed " << status.fmqByteConsumed
-                       << " produced " << status.fmqByteProduced;
+            LOG(DEBUG) << __func__ << " done processing, effect consumed " << status.fmqConsumed
+                       << " produced " << status.fmqProduced;
         } else {
             // TODO: maybe add some sleep here to avoid busy waiting
         }
     }
 
     // must implement by each effect implementation
-    virtual IEffect::Status effectProcessImpl() = 0;
+    virtual IEffect::Status effectProcessImpl(float* in, float* out, int processSamples) = 0;
 
   private:
     // make sure the context only set once.
diff --git a/audio/aidl/default/include/effectFactory-impl/EffectFactory.h b/audio/aidl/default/include/effectFactory-impl/EffectFactory.h
index 6195d8a..d50bd63 100644
--- a/audio/aidl/default/include/effectFactory-impl/EffectFactory.h
+++ b/audio/aidl/default/include/effectFactory-impl/EffectFactory.h
@@ -34,12 +34,14 @@
      *
      * @param in_type Type UUID.
      * @param in_instance Instance UUID.
+     * @param in_proxy Proxy UUID.
      * @param out_descriptor List of identities .
      * @return ndk::ScopedAStatus
      */
     ndk::ScopedAStatus queryEffects(
             const std::optional<::aidl::android::media::audio::common::AudioUuid>& in_type,
             const std::optional<::aidl::android::media::audio::common::AudioUuid>& in_instance,
+            const std::optional<::aidl::android::media::audio::common::AudioUuid>& in_proxy,
             std::vector<Descriptor::Identity>* out_descriptor) override;
 
     /**
@@ -79,16 +81,9 @@
     // List of effect descriptors supported by the devices.
     std::vector<Descriptor::Identity> mIdentityList;
 
-    typedef binder_exception_t (*EffectCreateFunctor)(std::shared_ptr<IEffect>*);
-    typedef binder_exception_t (*EffectDestroyFunctor)(const std::shared_ptr<IEffect>&);
-    struct effect_interface_s {
-        EffectCreateFunctor createEffectFunc;
-        EffectDestroyFunctor destroyEffectFunc;
-    };
-
     std::map<aidl::android::media::audio::common::AudioUuid /* implementationUUID */,
              std::pair<std::unique_ptr<void, std::function<void(void*)>> /* dlHandle */,
-                       std::unique_ptr<struct effect_interface_s>>>
+                       std::unique_ptr<struct effect_dl_interface_s>>>
             mEffectLibMap;
     std::map<std::weak_ptr<IEffect>, aidl::android::media::audio::common::AudioUuid,
              std::owner_less<>>
@@ -96,5 +91,10 @@
 
     ndk::ScopedAStatus destroyEffectImpl(const std::shared_ptr<IEffect>& in_handle);
     void cleanupEffectMap();
+    void openEffectLibrary(
+            const ::aidl::android::media::audio::common::AudioUuid& type,
+            const ::aidl::android::media::audio::common::AudioUuid& impl,
+            const std::optional<::aidl::android::media::audio::common::AudioUuid>& proxy,
+            const std::string& libName);
 };
 }  // namespace aidl::android::hardware::audio::effect
diff --git a/audio/aidl/default/include/equalizer-impl/EqualizerSw.h b/audio/aidl/default/include/equalizer-impl/EqualizerSw.h
index aa3a727..dad03e1 100644
--- a/audio/aidl/default/include/equalizer-impl/EqualizerSw.h
+++ b/audio/aidl/default/include/equalizer-impl/EqualizerSw.h
@@ -21,85 +21,104 @@
 #include <cstdlib>
 #include <memory>
 
-#include "effect-impl/EffectContext.h"
-#include "effect-impl/EffectTypes.h"
+#include "effect-impl/EffectImpl.h"
 #include "effect-impl/EffectUUID.h"
-#include "effect-impl/EffectWorker.h"
 
 namespace aidl::android::hardware::audio::effect {
 
 class EqualizerSwContext : public EffectContext {
   public:
-    EqualizerSwContext(int statusDepth, int inBufferSize, int outBufferSize)
-        : EffectContext(statusDepth, inBufferSize, outBufferSize) {
+    EqualizerSwContext(int statusDepth, const Parameter::Common& common)
+        : EffectContext(statusDepth, common) {
         LOG(DEBUG) << __func__;
     }
 
+    RetCode setEqPreset(const int& presetIdx) {
+        if (presetIdx < 0 || presetIdx >= NUM_OF_PRESETS) {
+            return RetCode::ERROR_ILLEGAL_PARAMETER;
+        }
+        mPreset = presetIdx;
+        return RetCode::SUCCESS;
+    }
+    int getEqPreset() { return mPreset; }
+
+    RetCode setEqBandLevels(const std::vector<Equalizer::BandLevel>& bandLevels) {
+        if (bandLevels.size() > NUM_OF_BANDS) {
+            LOG(ERROR) << __func__ << " return because size exceed " << NUM_OF_BANDS;
+            return RetCode::ERROR_ILLEGAL_PARAMETER;
+        }
+        RetCode ret = RetCode::SUCCESS;
+        for (auto& it : bandLevels) {
+            if (it.index >= NUM_OF_BANDS || it.index < 0) {
+                LOG(ERROR) << __func__ << " index illegal, skip: " << it.index << " - "
+                           << it.levelMb;
+                ret = RetCode::ERROR_ILLEGAL_PARAMETER;
+            }
+            mBandLevels[it.index] = it.levelMb;
+        }
+        return ret;
+    }
+
+    std::vector<Equalizer::BandLevel> getEqBandLevels() {
+        std::vector<Equalizer::BandLevel> bandLevels;
+        for (int i = 0; i < NUM_OF_BANDS; i++) {
+            bandLevels.push_back({i, mBandLevels[i]});
+        }
+        return bandLevels;
+    }
+
   private:
+    static const int NUM_OF_BANDS = 5;
+    static const int NUM_OF_PRESETS = 10;
+    static const int PRESET_CUSTOM = -1;
+    // preset band level
+    int mPreset = PRESET_CUSTOM;
+    int32_t mBandLevels[NUM_OF_BANDS] = {3, 0, 0, 0, 3};
+
     // Add equalizer specific context for processing here
 };
 
-class EqualizerSw : public BnEffect, EffectWorker {
+class EqualizerSw : public EffectImpl {
   public:
-    EqualizerSw() {
-        Equalizer::Capability eqCap = {.bandFrequencies = mBandFrequency, .presets = mPresets};
-        mDesc.capability.set<Capability::equalizer>(eqCap);
-        LOG(DEBUG) << __func__;
-    };
+    EqualizerSw() { LOG(DEBUG) << __func__; }
     ~EqualizerSw() {
-        cleanUp();
         LOG(DEBUG) << __func__;
-    };
-    ndk::ScopedAStatus open(const Parameter::Common& common, const Parameter::Specific& specific,
-                            OpenEffectReturn* _aidl_return) override;
-    ndk::ScopedAStatus close() override;
+        releaseContext();
+    }
+
     ndk::ScopedAStatus getDescriptor(Descriptor* _aidl_return) override;
-
-    ndk::ScopedAStatus getState(State* _aidl_return) override;
-    ndk::ScopedAStatus command(CommandId in_commandId) override;
-    ndk::ScopedAStatus setParameter(const Parameter& in_param) override;
-    ndk::ScopedAStatus getParameter(const Parameter::Id& in_paramId,
-                                    Parameter* _aidl_return) override;
-
-    IEffect::Status effectProcessImpl() override;
+    ndk::ScopedAStatus setParameterSpecific(const Parameter::Specific& specific) override;
+    ndk::ScopedAStatus getParameterSpecific(const Parameter::Id& id,
+                                            Parameter::Specific* specific) override;
+    IEffect::Status effectProcessImpl(float* in, float* out, int process) override;
+    std::shared_ptr<EffectContext> createContext(const Parameter::Common& common) override;
+    RetCode releaseContext() override;
 
   private:
-    // Effect descriptor.
-    Descriptor mDesc = {.common = {.id = {.type = EqualizerTypeUUID, .uuid = EqualizerSwImplUUID}}};
-
-    // Parameters.
-    Parameter::Common mCommonParam;
-    Equalizer mEqualizerParam;  // TODO: the equalizer parameter needs to update
-
-    // Instance state INIT by default.
-    State mState = State::INIT;
-
-    int mPreset = PRESET_CUSTOM;  // the current preset
+    std::shared_ptr<EqualizerSwContext> mContext;
+    /* capabilities */
     const std::vector<Equalizer::BandFrequency> mBandFrequency = {{0, 30000, 120000},
                                                                   {1, 120001, 460000},
                                                                   {2, 460001, 1800000},
                                                                   {3, 1800001, 7000000},
                                                                   {4, 7000001, 20000000}};
-    // preset band level
-    std::vector<Equalizer::BandLevel> mBandLevels = {{0, 3}, {1, 0}, {2, 0}, {3, 0}, {4, 3}};
     // presets supported by the device
     const std::vector<Equalizer::Preset> mPresets = {
             {0, "Normal"},      {1, "Classical"}, {2, "Dance"}, {3, "Flat"}, {4, "Folk"},
             {5, "Heavy Metal"}, {6, "Hip Hop"},   {7, "Jazz"},  {8, "Pop"},  {9, "Rock"}};
-    static const int NUM_OF_BANDS = 5;
-    static const int NUM_OF_PRESETS = 10;
-    static const int PRESET_CUSTOM = -1;
 
-    // Equalizer worker context
-    std::shared_ptr<EqualizerSwContext> mContext;
+    const Equalizer::Capability kEqCap = {.bandFrequencies = mBandFrequency, .presets = mPresets};
+    // Effect descriptor.
+    const Descriptor kDesc = {.common = {.id = {.type = EqualizerTypeUUID,
+                                                .uuid = EqualizerSwImplUUID,
+                                                .proxy = std::nullopt},
+                                         .flags = {.type = Flags::Type::INSERT,
+                                                   .insert = Flags::Insert::FIRST,
+                                                   .volume = Flags::Volume::CTRL},
+                                         .name = "EqualizerSw"},
+                              .capability = Capability::make<Capability::equalizer>(kEqCap)};
 
-    ndk::ScopedAStatus setCommonParameter(const Parameter::Common& common_param);
-    ndk::ScopedAStatus setSpecificParameter(const Parameter::Specific& specific);
-    ndk::ScopedAStatus getSpecificParameter(Parameter::Specific::Id id,
-                                            Parameter::Specific* specific);
-
-    void cleanUp();
-
-    IEffect::Status status(binder_status_t status, size_t consumed, size_t produced);
+    ndk::ScopedAStatus getParameterEqualizer(const Equalizer::Tag& tag,
+                                             Parameter::Specific* specific);
 };
 }  // namespace aidl::android::hardware::audio::effect