gralloc.cpp

/*
 * 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.
 */

#include <errno.h>
#include <fcntl.h>
#include <limits.h>
#include <pthread.h>
#include <stdlib.h>
#include <string.h>
#include <sys/ioctl.h>
#include <sys/mman.h>
#include <sys/stat.h>
#include <sys/types.h>
#include <unistd.h>

#include <cutils/ashmem.h>
#include <cutils/atomic.h>
#include <log/log.h>

#include <hardware/gralloc.h>
#include <hardware/hardware.h>

#include "gralloc_priv.h"
#include "gr.h"

/*****************************************************************************/

struct gralloc_context_t {
    alloc_device_t  device;
    /* our private data here */
};

static int gralloc_alloc_buffer(alloc_device_t* dev,
        size_t size, int usage, buffer_handle_t* pHandle);

/*****************************************************************************/

int fb_device_open(const hw_module_t* module, const char* name,
        hw_device_t** device);

static int gralloc_device_open(const hw_module_t* module, const char* name,
        hw_device_t** device);

extern int gralloc_lock(gralloc_module_t const* module,
        buffer_handle_t handle, int usage,
        int l, int t, int w, int h,
        void** vaddr);

extern int gralloc_unlock(gralloc_module_t const* module, 
        buffer_handle_t handle);

extern int gralloc_register_buffer(gralloc_module_t const* module,
        buffer_handle_t handle);

extern int gralloc_unregister_buffer(gralloc_module_t const* module,
        buffer_handle_t handle);