diff --git a/include/media/IDataSource.h b/include/media/IDataSource.h
new file mode 100644
index 0000000..07e46f7
--- /dev/null
+++ b/include/media/IDataSource.h
@@ -0,0 +1,61 @@
+/*
+ * Copyright 2015 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_IDATASOURCE_H
+#define ANDROID_IDATASOURCE_H
+
+#include <binder/IInterface.h>
+#include <media/stagefright/foundation/ABase.h>
+#include <utils/Errors.h>
+
+namespace android {
+
+class IMemory;
+
+// A binder interface for implementing a stagefright DataSource remotely.
+class IDataSource : public IInterface {
+public:
+    DECLARE_META_INTERFACE(DataSource);
+
+    // Get the memory that readAt writes into.
+    virtual sp<IMemory> getIMemory() = 0;
+    // Read up to |size| bytes into the memory returned by getIMemory(). Returns
+    // the number of bytes read, or -1 on error. |size| must not be larger than
+    // the buffer.
+    virtual ssize_t readAt(off64_t offset, size_t size) = 0;
+    // Get the size, or -1 if the size is unknown.
+    virtual status_t getSize(off64_t* size) = 0;
+    // This should be called before deleting |this|. The other methods may
+    // return errors if they're called after calling close().
+    virtual void close() = 0;
+
+private:
+    DISALLOW_EVIL_CONSTRUCTORS(IDataSource);
+};
+
+// ----------------------------------------------------------------------------
+
+class BnDataSource : public BnInterface<IDataSource> {
+public:
+    virtual status_t onTransact(uint32_t code,
+                                const Parcel& data,
+                                Parcel* reply,
+                                uint32_t flags = 0);
+};
+
+}; // namespace android
+
+#endif // ANDROID_IDATASOURCE_H