1/*
2 * Copyright (C) 2008 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 *      http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17#ifndef GR_H_
18#define GR_H_
19
20#include <stdint.h>
21#ifdef HAVE_ANDROID_OS      // just want PAGE_SIZE define
22# include <asm/page.h>
23#else
24# include <sys/user.h>
25#endif
26#include <limits.h>
27#include <sys/cdefs.h>
28#include <hardware/gralloc.h>
29#include <pthread.h>
30#include <errno.h>
31
32#include <cutils/native_handle.h>
33
34/*****************************************************************************/
35
36struct private_module_t;
37struct private_handle_t;
38
39inline size_t roundUpToPageSize(size_t x) {
40    return (x + (PAGE_SIZE-1)) & ~(PAGE_SIZE-1);
41}
42
43int mapFrameBufferLocked(struct private_module_t* module);
44int terminateBuffer(gralloc_module_t const* module, private_handle_t* hnd);
45int mapBuffer(gralloc_module_t const* module, private_handle_t* hnd);
46
47/*****************************************************************************/
48
49class Locker {
50    pthread_mutex_t mutex;
51public:
52    class Autolock {
53        Locker& locker;
54    public:
55        inline Autolock(Locker& locker) : locker(locker) {  locker.lock(); }
56        inline ~Autolock() { locker.unlock(); }
57    };
58    inline Locker()        { pthread_mutex_init(&mutex, 0); }
59    inline ~Locker()       { pthread_mutex_destroy(&mutex); }
60    inline void lock()     { pthread_mutex_lock(&mutex); }
61    inline void unlock()   { pthread_mutex_unlock(&mutex); }
62};
63
64#endif /* GR_H_ */
65