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#include <sys/user.h>
22#include <limits.h>
23#include <sys/cdefs.h>
24#include <hardware/gralloc.h>
25#include <pthread.h>
26#include <errno.h>
27
28#include <cutils/native_handle.h>
29
30/*****************************************************************************/
31
32struct private_module_t;
33struct private_handle_t;
34
35inline size_t roundUpToPageSize(size_t x) {
36    return (x + (PAGE_SIZE-1)) & ~(PAGE_SIZE-1);
37}
38
39int mapFrameBufferLocked(struct private_module_t* module);
40int terminateBuffer(gralloc_module_t const* module, private_handle_t* hnd);
41int mapBuffer(gralloc_module_t const* module, private_handle_t* hnd);
42
43/*****************************************************************************/
44
45class Locker {
46    pthread_mutex_t mutex;
47public:
48    class Autolock {
49        Locker& locker;
50    public:
51        inline Autolock(Locker& locker) : locker(locker) {  locker.lock(); }
52        inline ~Autolock() { locker.unlock(); }
53    };
54    inline Locker()        { pthread_mutex_init(&mutex, 0); }
55    inline ~Locker()       { pthread_mutex_destroy(&mutex); }
56    inline void lock()     { pthread_mutex_lock(&mutex); }
57    inline void unlock()   { pthread_mutex_unlock(&mutex); }
58};
59
60#endif /* GR_H_ */
61