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1 /*
2  * Copyright (C) 2013 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 ANDROID_RS_CPP_UTILS_H
18 #define ANDROID_RS_CPP_UTILS_H
19 
20 #include <stdint.h>
21 #include <stdlib.h>
22 #include <pthread.h>
23 #include <time.h>
24 #include <math.h>
25 
26 #include <string>
27 #include <vector>
28 #include <algorithm>
29 
30 #include <android/log.h>
31 #include <sys/system_properties.h>
32 
33 #ifndef ALOGE
34 #define ALOGE(...) \
35     __android_log_print(ANDROID_LOG_ERROR, LOG_TAG, __VA_ARGS__);
36 #endif
37 #ifndef ALOGW
38 #define ALOGW(...) \
39     __android_log_print(ANDROID_LOG_WARN, LOG_TAG, __VA_ARGS__);
40 #endif
41 #ifndef ALOGD
42 #define ALOGD(...) \
43     __android_log_print(ANDROID_LOG_DEBUG, LOG_TAG, __VA_ARGS__);
44 #endif
45 #ifndef ALOGV
46 #define ALOGV(...) \
47     __android_log_print(ANDROID_LOG_VERBOSE, LOG_TAG, __VA_ARGS__);
48 #endif
49 
50 #if defined(_WIN32)
51 #define OS_PATH_SEPARATOR '\\'
52 #else
53 #define OS_PATH_SEPARATOR '/'
54 #endif
55 
56 
57 namespace android {
58 namespace renderscript {
59 
60 typedef int64_t nsecs_t;  // nano-seconds
61 
62 enum {
63     SYSTEM_TIME_REALTIME = 0,  // system-wide realtime clock
64     SYSTEM_TIME_MONOTONIC = 1, // monotonic time since unspecified starting point
65     SYSTEM_TIME_PROCESS = 2,   // high-resolution per-process clock
66     SYSTEM_TIME_THREAD = 3,    // high-resolution per-thread clock
67 };
68 
systemTime(int clock)69 static inline nsecs_t systemTime(int clock)
70 {
71 #if defined(__linux__)
72     static const clockid_t clocks[] = {
73             CLOCK_REALTIME,
74             CLOCK_MONOTONIC,
75             CLOCK_PROCESS_CPUTIME_ID,
76             CLOCK_THREAD_CPUTIME_ID
77     };
78     struct timespec t;
79     t.tv_sec = t.tv_nsec = 0;
80     clock_gettime(clocks[clock], &t);
81     return nsecs_t(t.tv_sec)*1000000000LL + t.tv_nsec;
82 #else
83     // we don't support the clocks here.
84     struct timeval t;
85     t.tv_sec = t.tv_usec = 0;
86     gettimeofday(&t, nullptr);
87     return nsecs_t(t.tv_sec)*1000000000LL + nsecs_t(t.tv_usec)*1000LL;
88 #endif
89 }
90 
nanoseconds_to_milliseconds(nsecs_t secs)91 static inline nsecs_t nanoseconds_to_milliseconds(nsecs_t secs)
92 {
93     return secs/1000000;
94 }
95 
96 #if 1
97 #define rsAssert(v) do {if(!(v)) ALOGE("rsAssert failed: %s, in %s at %i", #v, __FILE__, __LINE__);} while (0)
98 #else
99 #define rsAssert(v) while (0)
100 #endif
101 
102 template<typename T>
rsMin(T in1,T in2)103 T rsMin(T in1, T in2)
104 {
105     if (in1 > in2) {
106         return in2;
107     }
108     return in1;
109 }
110 
111 template<typename T>
rsMax(T in1,T in2)112 T rsMax(T in1, T in2) {
113     if (in1 < in2) {
114         return in2;
115     }
116     return in1;
117 }
118 
119 template<typename T>
rsFindHighBit(T val)120 T rsFindHighBit(T val) {
121     uint32_t bit = 0;
122     while (val > 1) {
123         bit++;
124         val>>=1;
125     }
126     return bit;
127 }
128 
129 template<typename T>
rsIsPow2(T val)130 bool rsIsPow2(T val) {
131     return (val & (val-1)) == 0;
132 }
133 
134 template<typename T>
rsHigherPow2(T v)135 T rsHigherPow2(T v) {
136     if (rsIsPow2(v)) {
137         return v;
138     }
139     return 1 << (rsFindHighBit(v) + 1);
140 }
141 
142 template<typename T>
rsLowerPow2(T v)143 T rsLowerPow2(T v) {
144     if (rsIsPow2(v)) {
145         return v;
146     }
147     return 1 << rsFindHighBit(v);
148 }
149 
150 template<typename T>
rsRound(T v,unsigned int r)151 T rsRound(T v, unsigned int r) {
152     // Only valid for rounding up to powers of 2.
153     if ((r & (r - 1)) != 0) {
154         rsAssert(false && "Must be power of 2 for rounding up");
155         return v;
156     }
157     T res = v + (r - 1);
158     if (res < v) {
159         rsAssert(false && "Overflow of rounding operation");
160         return v;
161     }
162     res &= ~(r - 1);
163     return res;
164 }
165 
rs888to565(uint32_t r,uint32_t g,uint32_t b)166 static inline uint16_t rs888to565(uint32_t r, uint32_t g, uint32_t b) {
167     uint16_t t = 0;
168     t |= b >> 3;
169     t |= (g >> 2) << 5;
170     t |= (r >> 3) << 11;
171     return t;
172 }
173 
rsBoxFilter565(uint16_t i1,uint16_t i2,uint16_t i3,uint16_t i4)174 static inline uint16_t rsBoxFilter565(uint16_t i1, uint16_t i2, uint16_t i3, uint16_t i4) {
175     uint32_t r = ((i1 & 0x1f) + (i2 & 0x1f) + (i3 & 0x1f) + (i4 & 0x1f));
176     uint32_t g = ((i1 >> 5) & 0x3f) + ((i2 >> 5) & 0x3f) + ((i3 >> 5) & 0x3f) + ((i4 >> 5) & 0x3f);
177     uint32_t b = ((i1 >> 11) + (i2 >> 11) + (i3 >> 11) + (i4 >> 11));
178     return (r >> 2) | ((g >> 2) << 5) | ((b >> 2) << 11);
179 }
180 
rsBoxFilter8888(uint32_t i1,uint32_t i2,uint32_t i3,uint32_t i4)181 static inline uint32_t rsBoxFilter8888(uint32_t i1, uint32_t i2, uint32_t i3, uint32_t i4) {
182     uint32_t r = (i1 & 0xff) +         (i2 & 0xff) +         (i3 & 0xff) +         (i4 & 0xff);
183     uint32_t g = ((i1 >> 8) & 0xff) +  ((i2 >> 8) & 0xff) +  ((i3 >> 8) & 0xff) +  ((i4 >> 8) & 0xff);
184     uint32_t b = ((i1 >> 16) & 0xff) + ((i2 >> 16) & 0xff) + ((i3 >> 16) & 0xff) + ((i4 >> 16) & 0xff);
185     uint32_t a = ((i1 >> 24) & 0xff) + ((i2 >> 24) & 0xff) + ((i3 >> 24) & 0xff) + ((i4 >> 24) & 0xff);
186     return (r >> 2) | ((g >> 2) << 8) | ((b >> 2) << 16) | ((a >> 2) << 24);
187 }
188 
189 const char * rsuCopyString(const char *name);
190 const char * rsuCopyString(const char *name, size_t len);
191 const char* rsuJoinStrings(int n, const char* const* strs);
192 
193 #ifndef RS_COMPATIBILITY_LIB
194 // Utility to fork/exec a command.
195 //     exe - Command to execute
196 //     nArgs - Number of arguments (excluding the trailing nullptr in args)
197 //     args - Arguments to the command
198 bool rsuExecuteCommand(const char *exe, int nArgs, const char * const *args);
199 #endif
200 
201 int property_get(const char *key, char *value, const char *default_value);
202 
203 } // namespace renderscript
204 } // namespace android
205 
206 #endif //ANDROID_RS_OBJECT_BASE_H
207 
208 
209