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
38 struct private_module_t;
39 struct private_handle_t;
40
roundUpToPageSize(size_t x)41 inline size_t roundUpToPageSize(size_t x) {
42 return (x + (PAGE_SIZE-1)) & ~(PAGE_SIZE-1);
43 }
44
ALIGN(size_t x,size_t align)45 inline 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
52 int mapFrameBufferLocked(struct private_module_t* module);
53 int terminateBuffer(gralloc_module_t const* module, private_handle_t* hnd);
54 size_t getBufferSizeAndDimensions(int width, int height, int format,
55 int& alignedw, int &alignedh);
56
57 int 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
63 int alloc_buffer(private_handle_t **pHnd, int w, int h, int format, int usage);
64 void free_buffer(private_handle_t *hnd);
65
66 /*****************************************************************************/
67
68 class Locker {
69 pthread_mutex_t mutex;
70 public:
71 class Autolock {
72 Locker& locker;
73 public:
Autolock(Locker & locker)74 inline Autolock(Locker& locker) : locker(locker) { locker.lock(); }
~Autolock()75 inline ~Autolock() { locker.unlock(); }
76 };
Locker()77 inline Locker() { pthread_mutex_init(&mutex, 0); }
~Locker()78 inline ~Locker() { pthread_mutex_destroy(&mutex); }
lock()79 inline void lock() { pthread_mutex_lock(&mutex); }
unlock()80 inline void unlock() { pthread_mutex_unlock(&mutex); }
81 };
82
83
84 class 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