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 <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 #include <utils/Singleton.h>
30 
31 /*****************************************************************************/
32 
33 struct private_module_t;
34 struct private_handle_t;
35 
roundUpToPageSize(size_t x)36 inline size_t roundUpToPageSize(size_t x) {
37     return (x + (PAGE_SIZE-1)) & ~(PAGE_SIZE-1);
38 }
39 
40 template <class Type>
ALIGN(Type x,Type align)41 inline Type ALIGN(Type x, Type align) {
42     return (x + align-1) & ~(align-1);
43 }
44 
45 #define FALSE 0
46 #define TRUE  1
47 
48 int mapFrameBufferLocked(struct private_module_t* module);
49 int terminateBuffer(gralloc_module_t const* module, private_handle_t* hnd);
50 size_t getBufferSizeAndDimensions(int width, int height, int format, int usage,
51                                   int& alignedw, int &alignedh);
52 size_t getBufferSizeAndDimensions(int width, int height, int format,
53                                   int& alignedw, int &alignedh);
54 
55 
56 // Attributes include aligned width, aligned height, tileEnabled and size of the buffer
57 void getBufferAttributes(int width, int height, int format, int usage,
58                            int& alignedw, int &alignedh,
59                            int& tileEnabled, size_t &size);
60 
61 
62 bool isMacroTileEnabled(int format, int usage);
63 
64 int decideBufferHandlingMechanism(int format, const char *compositionUsed,
65                                   int hasBlitEngine, int *needConversion,
66                                   int *useBufferDirectly);
67 
68 // Allocate buffer from width, height, format into a private_handle_t
69 // It is the responsibility of the caller to free the buffer
70 int alloc_buffer(private_handle_t **pHnd, int w, int h, int format, int usage);
71 void free_buffer(private_handle_t *hnd);
72 int getYUVPlaneInfo(private_handle_t* pHnd, struct android_ycbcr* ycbcr);
73 
74 /*****************************************************************************/
75 
76 class Locker {
77     pthread_mutex_t mutex;
78     pthread_cond_t cond;
79     public:
80     class Autolock {
81         Locker& locker;
82         public:
Autolock(Locker & locker)83         inline Autolock(Locker& locker) : locker(locker) {  locker.lock(); }
~Autolock()84         inline ~Autolock() { locker.unlock(); }
85     };
Locker()86     inline Locker()        {
87         pthread_mutex_init(&mutex, 0);
88         pthread_cond_init(&cond, 0);
89     }
~Locker()90     inline ~Locker()       {
91         pthread_mutex_destroy(&mutex);
92         pthread_cond_destroy(&cond);
93     }
lock()94     inline void lock()     { pthread_mutex_lock(&mutex); }
wait()95     inline void wait()     { pthread_cond_wait(&cond, &mutex); }
unlock()96     inline void unlock()   { pthread_mutex_unlock(&mutex); }
signal()97     inline void signal()   { pthread_cond_signal(&cond); }
98 };
99 
100 
101 class AdrenoMemInfo : public android::Singleton <AdrenoMemInfo>
102 {
103     public:
104     AdrenoMemInfo();
105 
106     ~AdrenoMemInfo();
107 
108     /*
109      * Function to compute the adreno aligned width and aligned height
110      * based on the width and format.
111      *
112      * @return aligned width, aligned height
113      */
114     void getAlignedWidthAndHeight(int width, int height, int format,
115                             int tileEnabled, int& alignedw, int &alignedh);
116 
117     /*
118      * Function to return whether GPU support MacroTile feature
119      *
120      * @return >0 : supported
121      *          0 : not supported
122      */
123     int isMacroTilingSupportedByGPU();
124 
125     private:
126         // Pointer to the padding library.
127         void *libadreno_utils;
128 
129         // link(s)to adreno surface padding library.
130         int (*LINK_adreno_compute_padding) (int width, int bpp,
131                                                 int surface_tile_height,
132                                                 int screen_tile_height,
133                                                 int padding_threshold);
134 
135         void (*LINK_adreno_compute_aligned_width_and_height) (int width,
136                                                 int height,
137                                                 int bpp,
138                                                 int tile_mode,
139                                                 int raster_mode,
140                                                 int padding_threshold,
141                                                 int *aligned_w,
142                                                 int *aligned_h);
143 
144         int (*LINK_adreno_isMacroTilingSupportedByGpu) (void);
145 
146         void(*LINK_adreno_compute_compressedfmt_aligned_width_and_height)(
147                                                 int width,
148                                                 int height,
149                                                 int format,
150                                                 int tile_mode,
151                                                 int raster_mode,
152                                                 int padding_threshold,
153                                                 int *aligned_w,
154                                                 int *aligned_h,
155                                                 int *bpp);
156 };
157 #endif /* GR_H_ */
158