gr.h revision 513ddc2124abf90c63af41999201f0d2031af0c8 
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#ifdef HAVE_ANDROID_OS      // just want PAGE_SIZE define
23# include <asm/page.h>
24#else
25# include <sys/user.h>
26#endif
27#include <limits.h>
28#include <sys/cdefs.h>
29#include <hardware/gralloc.h>
30#include <pthread.h>
31#include <errno.h>
32
33#include <cutils/native_handle.h>
34#include <utils/Singleton.h>
35
36/*****************************************************************************/
37
38struct private_module_t;
39struct private_handle_t;
40
41inline size_t roundUpToPageSize(size_t x) {
42    return (x + (PAGE_SIZE-1)) & ~(PAGE_SIZE-1);
43}
44
45inline size_t ALIGN(size_t x, size_t align) {
46    return (x + align-1) & ~(align-1);
47}
48
49#define FALSE 0
50#define TRUE  1
51
52int mapFrameBufferLocked(struct private_module_t* module);
53int terminateBuffer(gralloc_module_t const* module, private_handle_t* hnd);
54size_t getBufferSizeAndDimensions(int width, int height, int format,
55                                  int& alignedw, int &alignedh);
56
57int decideBufferHandlingMechanism(int format, const char *compositionUsed,
58                                  int hasBlitEngine, int *needConversion,
59                                  int *useBufferDirectly);
60
61// Allocate buffer from width, height, format into a private_handle_t
62// It is the responsibility of the caller to free the buffer
63int alloc_buffer(private_handle_t **pHnd, int w, int h, int format, int usage);
64void free_buffer(private_handle_t *hnd);
65
66/*****************************************************************************/
67
68class Locker {
69    pthread_mutex_t mutex;
70    public:
71    class Autolock {
72        Locker& locker;
73        public:
74        inline Autolock(Locker& locker) : locker(locker) {  locker.lock(); }
75        inline ~Autolock() { locker.unlock(); }
76    };
77    inline Locker()        { pthread_mutex_init(&mutex, 0); }
78    inline ~Locker()       { pthread_mutex_destroy(&mutex); }
79    inline void lock()     { pthread_mutex_lock(&mutex); }
80    inline void unlock()   { pthread_mutex_unlock(&mutex); }
81};
82
83
84class AdrenoMemInfo : public android::Singleton <AdrenoMemInfo>
85{
86    public:
87    AdrenoMemInfo();
88
89    ~AdrenoMemInfo();
90
91    /*
92     * Function to compute the adreno stride based on the width and format.
93     *
94     * @return stride.
95     */
96    int getStride(int width, int format);
97
98    private:
99        // Pointer to the padding library.
100        void *libadreno_utils;
101
102        // link to the surface padding library.
103        int (*LINK_adreno_compute_padding) (int width, int bpp,
104                                                int surface_tile_height,
105                                                int screen_tile_height,
106                                                int padding_threshold);
107};
108#endif /* GR_H_ */
109