diff --git a/libs/gui/IGraphicBufferAlloc.cpp b/libs/gui/IGraphicBufferAlloc.cpp
new file mode 100644
index 0000000..21a0dd5
--- /dev/null
+++ b/libs/gui/IGraphicBufferAlloc.cpp
@@ -0,0 +1,139 @@
+/*
+ * Copyright (C) 2011 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.
+ */
+
+// tag as surfaceflinger
+#define LOG_TAG "SurfaceFlinger"
+
+#include <stdint.h>
+#include <sys/types.h>
+
+#include <binder/Parcel.h>
+
+#include <ui/GraphicBuffer.h>
+
+#include <gui/IGraphicBufferAlloc.h>
+
+// ---------------------------------------------------------------------------
+
+namespace android {
+
+enum {
+    CREATE_GRAPHIC_BUFFER = IBinder::FIRST_CALL_TRANSACTION,
+};
+
+class BpGraphicBufferAlloc : public BpInterface<IGraphicBufferAlloc>
+{
+public:
+    explicit BpGraphicBufferAlloc(const sp<IBinder>& impl)
+        : BpInterface<IGraphicBufferAlloc>(impl)
+    {
+    }
+
+    virtual ~BpGraphicBufferAlloc();
+
+    virtual sp<GraphicBuffer> createGraphicBuffer(uint32_t width,
+            uint32_t height, PixelFormat format, uint32_t layerCount,
+            uint64_t producerUsage, uint64_t consumerUsage,
+            std::string requestorName, status_t* error) {
+        Parcel data, reply;
+        data.writeInterfaceToken(IGraphicBufferAlloc::getInterfaceDescriptor());
+        data.writeUint32(width);
+        data.writeUint32(height);
+        data.writeInt32(static_cast<int32_t>(format));
+        data.writeUint32(layerCount);
+        data.writeUint64(producerUsage);
+        data.writeUint64(consumerUsage);
+        if (requestorName.empty()) {
+            requestorName += "[PID ";
+            requestorName += std::to_string(getpid());
+            requestorName += ']';
+        }
+        data.writeUtf8AsUtf16(requestorName);
+        remote()->transact(CREATE_GRAPHIC_BUFFER, data, &reply);
+        sp<GraphicBuffer> graphicBuffer;
+        status_t result = reply.readInt32();
+        if (result == NO_ERROR) {
+            graphicBuffer = new GraphicBuffer();
+            result = reply.read(*graphicBuffer);
+            if (result != NO_ERROR) {
+                graphicBuffer.clear();
+            }
+            // reply.readStrongBinder();
+            // here we don't even have to read the BufferReference from
+            // the parcel, it'll die with the parcel.
+        }
+        *error = result;
+        return graphicBuffer;
+    }
+};
+
+// Out-of-line virtual method definition to trigger vtable emission in this
+// translation unit (see clang warning -Wweak-vtables)
+BpGraphicBufferAlloc::~BpGraphicBufferAlloc() {}
+
+IMPLEMENT_META_INTERFACE(GraphicBufferAlloc, "android.ui.IGraphicBufferAlloc");
+
+// ----------------------------------------------------------------------
+
+status_t BnGraphicBufferAlloc::onTransact(
+    uint32_t code, const Parcel& data, Parcel* reply, uint32_t flags)
+{
+    // codes that don't require permission check
+
+    // BufferReference just keeps a strong reference to a GraphicBuffer until it
+    // is destroyed (that is, until no local or remote process have a reference
+    // to it).
+    class BufferReference : public BBinder {
+        sp<GraphicBuffer> mBuffer;
+    public:
+        explicit BufferReference(const sp<GraphicBuffer>& buffer) : mBuffer(buffer) {}
+    };
+
+
+    switch (code) {
+        case CREATE_GRAPHIC_BUFFER: {
+            CHECK_INTERFACE(IGraphicBufferAlloc, data, reply);
+            uint32_t width = data.readUint32();
+            uint32_t height = data.readUint32();
+            PixelFormat format = static_cast<PixelFormat>(data.readInt32());
+            uint32_t layerCount = data.readUint32();
+            uint64_t producerUsage = data.readUint64();
+            uint64_t consumerUsage = data.readUint64();
+            status_t error = NO_ERROR;
+            std::string requestorName;
+            data.readUtf8FromUtf16(&requestorName);
+            sp<GraphicBuffer> result = createGraphicBuffer(width, height,
+                    format, layerCount, producerUsage, consumerUsage,
+                    requestorName, &error);
+            reply->writeInt32(error);
+            if (result != 0) {
+                reply->write(*result);
+                // We add a BufferReference to this parcel to make sure the
+                // buffer stays alive until the GraphicBuffer object on
+                // the other side has been created.
+                // This is needed so that the buffer handle can be
+                // registered before the buffer is destroyed on implementations
+                // that do not use file-descriptors to track their buffers.
+                reply->writeStrongBinder( new BufferReference(result) );
+            }
+            return NO_ERROR;
+        }
+        default:
+            return BBinder::onTransact(code, data, reply, flags);
+    }
+}
+
+}; // namespace android