diff --git a/soundtrigger/ISoundTrigger.cpp b/soundtrigger/ISoundTrigger.cpp
new file mode 100644
index 0000000..42280d1
--- /dev/null
+++ b/soundtrigger/ISoundTrigger.cpp
@@ -0,0 +1,177 @@
+/*
+**
+** Copyright 2014, 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.
+*/
+
+#define LOG_TAG "ISoundTrigger"
+#include <utils/Log.h>
+#include <utils/Errors.h>
+#include <binder/IMemory.h>
+#include <soundtrigger/ISoundTrigger.h>
+#include <soundtrigger/ISoundTriggerHwService.h>
+#include <soundtrigger/ISoundTriggerClient.h>
+#include <system/sound_trigger.h>
+
+namespace android {
+
+enum {
+    DETACH = IBinder::FIRST_CALL_TRANSACTION,
+    LOAD_SOUND_MODEL,
+    UNLOAD_SOUND_MODEL,
+    START_RECOGNITION,
+    STOP_RECOGNITION,
+};
+
+class BpSoundTrigger: public BpInterface<ISoundTrigger>
+{
+public:
+    BpSoundTrigger(const sp<IBinder>& impl)
+        : BpInterface<ISoundTrigger>(impl)
+    {
+    }
+
+    void detach()
+    {
+        ALOGV("detach");
+        Parcel data, reply;
+        data.writeInterfaceToken(ISoundTrigger::getInterfaceDescriptor());
+        remote()->transact(DETACH, data, &reply);
+    }
+
+    status_t loadSoundModel(const sp<IMemory>&  modelMemory,
+                                    sound_model_handle_t *handle)
+    {
+        if (modelMemory == 0 || handle == NULL) {
+            return BAD_VALUE;
+        }
+        Parcel data, reply;
+        data.writeInterfaceToken(ISoundTrigger::getInterfaceDescriptor());
+        data.writeStrongBinder(modelMemory->asBinder());
+        status_t status = remote()->transact(LOAD_SOUND_MODEL, data, &reply);
+        if (status != NO_ERROR ||
+                (status = (status_t)reply.readInt32()) != NO_ERROR) {
+            return status;
+        }
+        reply.read(handle, sizeof(sound_model_handle_t));
+        return status;
+    }
+
+    virtual status_t unloadSoundModel(sound_model_handle_t handle)
+    {
+        Parcel data, reply;
+        data.writeInterfaceToken(ISoundTrigger::getInterfaceDescriptor());
+        data.write(&handle, sizeof(sound_model_handle_t));
+        status_t status = remote()->transact(UNLOAD_SOUND_MODEL, data, &reply);
+        if (status != NO_ERROR) {
+            status = (status_t)reply.readInt32();
+        }
+        return status;
+    }
+
+    virtual status_t startRecognition(sound_model_handle_t handle,
+                                      const sp<IMemory>& dataMemory)
+    {
+        Parcel data, reply;
+        data.writeInterfaceToken(ISoundTrigger::getInterfaceDescriptor());
+        data.write(&handle, sizeof(sound_model_handle_t));
+        if (dataMemory == 0) {
+            data.writeInt32(0);
+        } else {
+            data.writeInt32(dataMemory->size());
+        }
+        data.writeStrongBinder(dataMemory->asBinder());
+        status_t status = remote()->transact(START_RECOGNITION, data, &reply);
+        if (status != NO_ERROR) {
+            status = (status_t)reply.readInt32();
+        }
+        return status;
+    }
+
+    virtual status_t stopRecognition(sound_model_handle_t handle)
+    {
+        Parcel data, reply;
+        data.writeInterfaceToken(ISoundTrigger::getInterfaceDescriptor());
+        data.write(&handle, sizeof(sound_model_handle_t));
+        status_t status = remote()->transact(STOP_RECOGNITION, data, &reply);
+        if (status != NO_ERROR) {
+            status = (status_t)reply.readInt32();
+        }
+        return status;
+    }
+
+};
+
+IMPLEMENT_META_INTERFACE(SoundTrigger, "android.hardware.ISoundTrigger");
+
+// ----------------------------------------------------------------------
+
+status_t BnSoundTrigger::onTransact(
+    uint32_t code, const Parcel& data, Parcel* reply, uint32_t flags)
+{
+    switch(code) {
+        case DETACH: {
+            ALOGV("DETACH");
+            CHECK_INTERFACE(ISoundTrigger, data, reply);
+            detach();
+            return NO_ERROR;
+        } break;
+        case LOAD_SOUND_MODEL: {
+            CHECK_INTERFACE(ISoundTrigger, data, reply);
+            sp<IMemory> modelMemory = interface_cast<IMemory>(
+                data.readStrongBinder());
+            sound_model_handle_t handle;
+            status_t status = loadSoundModel(modelMemory, &handle);
+            reply->writeInt32(status);
+            if (status == NO_ERROR) {
+                reply->write(&handle, sizeof(sound_model_handle_t));
+            }
+            return NO_ERROR;
+        }
+        case UNLOAD_SOUND_MODEL: {
+            CHECK_INTERFACE(ISoundTrigger, data, reply);
+            sound_model_handle_t handle;
+            data.read(&handle, sizeof(sound_model_handle_t));
+            status_t status = unloadSoundModel(handle);
+            reply->writeInt32(status);
+            return NO_ERROR;
+        }
+        case START_RECOGNITION: {
+            CHECK_INTERFACE(ISoundTrigger, data, reply);
+            sound_model_handle_t handle;
+            data.read(&handle, sizeof(sound_model_handle_t));
+            sp<IMemory> dataMemory;
+            if (data.readInt32() != 0) {
+                dataMemory = interface_cast<IMemory>(data.readStrongBinder());
+            }
+            status_t status = startRecognition(handle, dataMemory);
+            reply->writeInt32(status);
+            return NO_ERROR;
+        }
+        case STOP_RECOGNITION: {
+            CHECK_INTERFACE(ISoundTrigger, data, reply);
+            sound_model_handle_t handle;
+            data.read(&handle, sizeof(sound_model_handle_t));
+            status_t status = stopRecognition(handle);
+            reply->writeInt32(status);
+            return NO_ERROR;
+        }
+        default:
+            return BBinder::onTransact(code, data, reply, flags);
+    }
+}
+
+// ----------------------------------------------------------------------------
+
+}; // namespace android