diff --git a/include/hardware/gralloc.h b/include/hardware/gralloc.h
new file mode 100644
index 0000000..c473de0
--- /dev/null
+++ b/include/hardware/gralloc.h
@@ -0,0 +1,284 @@
+/*
+ * Copyright (C) 2008 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_GRALLOC_INTERFACE_H
+#define ANDROID_GRALLOC_INTERFACE_H
+
+#include <cutils/native_handle.h>
+
+#include <hardware/hardware.h>
+
+#include <stdint.h>
+#include <sys/cdefs.h>
+#include <sys/types.h>
+
+__BEGIN_DECLS
+
+/**
+ * The id of this module
+ */
+#define GRALLOC_HARDWARE_MODULE_ID "gralloc"
+
+/**
+ * Name of the graphics device to open
+ */
+
+#define GRALLOC_HARDWARE_FB0 "fb0"
+#define GRALLOC_HARDWARE_GPU0 "gpu0"
+
+enum {
+    /* buffer is never read in software */
+    GRALLOC_USAGE_SW_READ_NEVER   = 0x00000001,
+    /* buffer is rarely read in software */
+    GRALLOC_USAGE_SW_READ_RARELY  = 0x00000002,
+    /* buffer is often read in software */
+    GRALLOC_USAGE_SW_READ_OFTEN   = 0x00000003,
+    /* mask for the software read values */
+    GRALLOC_USAGE_SW_READ_MASK    = 0x0000000F,
+    
+    /* buffer is never written in software */
+    GRALLOC_USAGE_SW_WRITE_NEVER  = 0x00000010,
+    /* buffer is never written in software */
+    GRALLOC_USAGE_SW_WRITE_RARELY = 0x00000020,
+    /* buffer is never written in software */
+    GRALLOC_USAGE_SW_WRITE_OFTEN  = 0x00000030,
+    /* mask for the software write values */
+    GRALLOC_USAGE_SW_WRITE_MASK   = 0x000000F0,
+
+    /* buffer will be used as an OpenGL ES texture */
+    GRALLOC_USAGE_HW_TEXTURE      = 0x00000100,
+    /* buffer will be used as an OpenGL ES render target */
+    GRALLOC_USAGE_HW_RENDER       = 0x00000200,
+    /* buffer will be used by the 2D hardware blitter */
+    GRALLOC_USAGE_HW_2D           = 0x00000C00,
+    /* buffer will be used with the framebuffer device */
+    GRALLOC_USAGE_HW_FB           = 0x00001000,
+    /* mask for the software usage bit-mask */
+    GRALLOC_USAGE_HW_MASK         = 0x00001F00,
+};
+
+enum {
+    /* the framebuffer is mapped in memory */
+    FRAMEBUFFER_RESERVED0                = 0x00000001,
+    FRAMEBUFFER_FLAG_MAPPED              = 0x00000002,
+};
+
+/*****************************************************************************/
+
+typedef const native_handle* buffer_handle_t;
+
+/**
+ * Every hardware module must have a data structure named HAL_MODULE_INFO_SYM
+ * and the fields of this data structure must begin with hw_module_t
+ * followed by module specific information.
+ */
+struct gralloc_module_t {
+    struct hw_module_t common;
+    
+    /* 
+     * The (*map)() method maps the buffer in the caller's address space
+     * if this operation is allowed (see below). 
+     * Mapped buffers are reference-counted in a given process, that is,
+     * if a the buffer is already mapped, this function must return the
+     * same address and the internal reference counter is incremented.
+     * 
+     *  Returns 0 on success or -errno on error.
+     */
+    
+    int (*map)(struct gralloc_module_t const* module,
+            buffer_handle_t handle, void** vaddr);
+
+    /*
+     * The (*unmap)() method, unmaps the buffer from the caller's address
+     * space, if the buffer has been mapped more than once, 
+     * the (*unmap)() needs to be called the same number of time before 
+     * the buffer is actually unmapped. 
+     * 
+     * Returns 0 on success or -errno on error.
+     */
+
+    int (*unmap)(struct gralloc_module_t const* module, buffer_handle_t handle);
+
+    
+    /*
+     * The (*lock)() method is called before a buffer is accessed for the 
+     * specified usage. This call may block, for instance if the h/w needs
+     * to finish rendering or if CPU caches need to be synchronized.
+     * 
+     * The caller promises to modify ALL PIXELS and ONLY THE PIXELS in the area
+     * specified by (l,t,w,h).
+     * 
+     * The content of the buffer outside of the specified area is NOT modified
+     * by this call.
+     * 
+     */
+    
+    int (*lock)(struct gralloc_module_t const* module,
+            buffer_handle_t handle, int usage,
+            int l, int t, int w, int h);
+
+    
+    /*
+     * The (*unlock)() method must be called after all changes to the buffer
+     * are completed.
+     */
+    
+    int (*unlock)(struct gralloc_module_t const* module,
+            buffer_handle_t handle);
+
+};
+
+/*****************************************************************************/
+
+/**
+ * Every device data structure must begin with hw_device_t
+ * followed by module specific public methods and attributes.
+ */
+
+struct alloc_device_t {
+    struct hw_device_t common;
+
+    /* 
+     * (*alloc)() Allocates a buffer in graphic memory with the requested
+     * parameters and returns a buffer_handle_t and the stride in pixels to
+     * allow the implementation to satisfy hardware constraints on the width
+     * of a pixmap (eg: it may have to be multiple of 8 pixels). 
+     * The CALLER TAKES OWNERSHIP of the buffer_handle_t.
+     * 
+     * Returns 0 on success or -errno on error.
+     */
+    
+    int (*alloc)(struct alloc_device_t* dev,
+            int w, int h, int format, int usage,
+            buffer_handle_t* handle, int* stride);
+
+    /*
+     * (*free)() Frees a previously allocated buffer. 
+     * Behavior is undefined if the buffer is still mapped in any process,
+     * but shall not result in termination of the program or security breaches
+     * (allowing a process to get access to another process' buffers).
+     * THIS FUNCTION TAKES OWNERSHIP of the buffer_handle_t which becomes
+     * invalid after the call. 
+     * 
+     * Returns 0 on success or -errno on error.
+     */
+    int (*free)(struct alloc_device_t* dev,
+            buffer_handle_t handle);
+
+};
+
+
+struct framebuffer_device_t {
+    struct hw_device_t common;
+
+    /* flags describing some attributes of the framebuffer */
+    const uint32_t  flags;
+    
+    /* dimensions of the framebuffer in pixels */
+    const uint32_t  width;
+    const uint32_t  height;
+
+    /* frambuffer stride in pixels */
+    const int       stride;
+    
+    /* framebuffer pixel format */
+    const int       format;
+    
+    /* resolution of the framebuffer's display panel in pixel per inch*/
+    const float     xdpi;
+    const float     ydpi;
+
+    /* framebuffer's display panel refresh rate in frames per second */
+    const float     fps;
+
+    /* min swap interval supported by this framebuffer */
+    const int       minSwapInterval;
+
+    /* max swap interval supported by this framebuffer */
+    const int       maxSwapInterval;
+
+    int reserved[8];
+    
+    /* 
+     * requests a specific swap-interval (same definition than EGL) 
+     * 
+     * Returns 0 on success or -errno on error.
+     */
+    int (*setSwapInterval)(struct framebuffer_device_t* window,
+            int interval);
+
+    /*
+     * sets a rectangle evaluated during (*post)() specifying which area
+     * of the buffer passed in (*post)() needs to be posted.
+     * 
+     * return -EINVAL if width or height <=0, or if left or top < 0 
+     */
+    int (*setUpdateRect)(struct framebuffer_device_t* window,
+            int left, int top, int width, int height);
+    
+    /*
+     * Post <buffer> to the display (display it on the screen)
+     * The buffer must have been allocated with the 
+     *   GRALLOC_USAGE_HW_FB usage flag.
+     * buffer must be the same width and height as the display and must NOT
+     * be locked.
+     * 
+     * The buffer is shown during the next VSYNC. 
+     * 
+     * If the same buffer is posted again (possibly after some other buffer),
+     * post() will block until the the first post is completed.
+     *
+     * Internally, post() is expected to lock the buffer so that a 
+     * subsequent call to gralloc_module_t::(*lock)() with USAGE_RENDER or
+     * USAGE_*_WRITE will block until it is safe; that is typically once this
+     * buffer is shown and another buffer has been posted.
+     *
+     * Returns 0 on success or -errno on error.
+     */
+    int (*post)(struct framebuffer_device_t* dev, buffer_handle_t buffer);
+
+    void* reserved_proc[8];
+};
+
+
+/** convenience API for opening and closing a supported device */
+
+static inline int gralloc_open(const struct hw_module_t* module, 
+        struct alloc_device_t** device) {
+    return module->methods->open(module, 
+            GRALLOC_HARDWARE_GPU0, (struct hw_device_t**)device);
+}
+
+static inline int gralloc_close(struct alloc_device_t* device) {
+    return device->common.close(&device->common);
+}
+
+
+static inline int framebuffer_open(const struct hw_module_t* module, 
+        struct framebuffer_device_t** device) {
+    return module->methods->open(module, 
+            GRALLOC_HARDWARE_FB0, (struct hw_device_t**)device);
+}
+
+static inline int framebuffer_close(struct framebuffer_device_t* device) {
+    return device->common.close(&device->common);
+}
+
+
+__END_DECLS
+
+#endif  // ANDROID_ALLOC_INTERFACE_H