1/*
2 * Copyright (C) 2008 The Android Open Source Project
3 * Copyright (c) 2011-2012, The Linux Foundation. All rights reserved.
4 *
5 * Licensed under the Apache License, Version 2.0 (the "License");
6 * you may not use this file except in compliance with the License.
7 * You may obtain a copy of the License at
8 *
9 *      http://www.apache.org/licenses/LICENSE-2.0
10 *
11 * Unless required by applicable law or agreed to in writing, software
12 * distributed under the License is distributed on an "AS IS" BASIS,
13 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14 * See the License for the specific language governing permissions and
15 * limitations under the License.
16 */
17
18#ifndef GR_H_
19#define GR_H_
20
21#include <stdint.h>
22#include <sys/user.h>
23#include <limits.h>
24#include <sys/cdefs.h>
25#include <hardware/gralloc.h>
26#include <pthread.h>
27#include <errno.h>
28
29#include <cutils/native_handle.h>
30#include <utils/Singleton.h>
31
32/*****************************************************************************/
33
34struct private_module_t;
35struct private_handle_t;
36
37inline size_t roundUpToPageSize(size_t x) {
38    return (x + (PAGE_SIZE-1)) & ~(PAGE_SIZE-1);
39}
40
41inline size_t ALIGN(size_t x, size_t align) {
42    return (x + align-1) & ~(align-1);
43}
44
45#define FALSE 0
46#define TRUE  1
47
48int mapFrameBufferLocked(struct private_module_t* module);
49int terminateBuffer(gralloc_module_t const* module, private_handle_t* hnd);
50size_t getBufferSizeAndDimensions(int width, int height, int format,
51                                  int& alignedw, int &alignedh);
52
53int decideBufferHandlingMechanism(int format, const char *compositionUsed,
54                                  int hasBlitEngine, int *needConversion,
55                                  int *useBufferDirectly);
56
57// Allocate buffer from width, height, format into a private_handle_t
58// It is the responsibility of the caller to free the buffer
59int alloc_buffer(private_handle_t **pHnd, int w, int h, int format, int usage);
60void free_buffer(private_handle_t *hnd);
61
62/*****************************************************************************/
63
64class Locker {
65    pthread_mutex_t mutex;
66    public:
67    class Autolock {
68        Locker& locker;
69        public:
70        inline Autolock(Locker& locker) : locker(locker) {  locker.lock(); }
71        inline ~Autolock() { locker.unlock(); }
72    };
73    inline Locker()        { pthread_mutex_init(&mutex, 0); }
74    inline ~Locker()       { pthread_mutex_destroy(&mutex); }
75    inline void lock()     { pthread_mutex_lock(&mutex); }
76    inline void unlock()   { pthread_mutex_unlock(&mutex); }
77};
78
79
80class AdrenoMemInfo : public android::Singleton <AdrenoMemInfo>
81{
82    public:
83    AdrenoMemInfo();
84
85    ~AdrenoMemInfo();
86
87    /*
88     * Function to compute the adreno stride based on the width and format.
89     *
90     * @return stride.
91     */
92    int getStride(int width, int format);
93
94    private:
95        // Pointer to the padding library.
96        void *libadreno_utils;
97
98        // link to the surface padding library.
99        int (*LINK_adreno_compute_padding) (int width, int bpp,
100                                                int surface_tile_height,
101                                                int screen_tile_height,
102                                                int padding_threshold);
103};
104#endif /* GR_H_ */
105