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diff --git a/include/media/IDirectTrack.h b/include/media/IDirectTrack.h
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--- /dev/null
+++ b/include/media/IDirectTrack.h
@@ -0,0 +1,93 @@
+/*
+ * Copyright (c) 2012, The Linux Foundation. All rights reserved.
+ * Not a Contribution, Apache license notifications and license are retained
+ * for attribution purposes only.
+ *
+ * Copyright (C) 2007 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.
+ */
+
+#ifndef ANDROID_IDIRECTTRACK_H
+#define ANDROID_IDIRECTTRACK_H
+
+#include <stdint.h>
+#include <sys/types.h>
+
+#include <utils/RefBase.h>
+#include <utils/Errors.h>
+#include <binder/IInterface.h>
+#include <binder/IMemory.h>
+
+
+namespace android {
+
+// ----------------------------------------------------------------------------
+
+class IDirectTrack : public IInterface
+{
+public:
+    DECLARE_META_INTERFACE(DirectTrack);
+
+    /* After it's created the track is not active. Call start() to
+     * make it active. If set, the callback will start being called.
+     */
+    virtual status_t    start() = 0;
+
+    /* Stop a track. If set, the callback will cease being called and
+     * obtainBuffer will return an error. Buffers that are already released
+     * will be processed, unless flush() is called.
+     */
+    virtual void        stop() = 0;
+
+    /* flush a stopped track. All pending buffers are discarded.
+     * This function has no effect if the track is not stoped.
+     */
+    virtual void        flush() = 0;
+
+    /* mute or unmutes this track.
+     * While mutted, the callback, if set, is still called.
+     */
+    virtual void        mute(bool) = 0;
+
+    /* Pause a track. If set, the callback will cease being called and
+     * obtainBuffer will return an error. Buffers that are already released
+     * will be processed, unless flush() is called.
+     */
+    virtual void        pause() = 0;
+
+    /* set volume for both left and right channels.
+     */
+    virtual void        setVolume(float l, float r) = 0;
+
+    virtual ssize_t     write(const void*, size_t) =  0;
+
+    virtual int64_t     getTimeStamp() =  0;
+};
+
+// ----------------------------------------------------------------------------
+
+class BnDirectTrack : public BnInterface<IDirectTrack>
+{
+public:
+    virtual status_t    onTransact( uint32_t code,
+                                    const Parcel& data,
+                                    Parcel* reply,
+                                    uint32_t flags = 0);
+};
+
+// ----------------------------------------------------------------------------
+
+}; // namespace android
+
+#endif // ANDROID_IAUDIOTRACK_H