rsCppUtils.h revision 5abfd9b62b3173a371c42fc92ca8cf978420d694
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#if !defined(RS_SERVER) && !defined(RS_COMPATIBILITY_LIB)
21#include <utils/Log.h>
22#include <utils/String8.h>
23#include <utils/Vector.h>
24#include <cutils/atomic.h>
25#endif
26
27#include <stdint.h>
28
29#include <stdlib.h>
30#include <pthread.h>
31#include <time.h>
32
33#include <math.h>
34
35#ifdef RS_COMPATIBILITY_LIB
36#include <android/log.h>
37#endif
38
39#if defined(RS_SERVER) || defined(RS_COMPATIBILITY_LIB)
40
41#define ATRACE_TAG
42#define ATRACE_CALL(...)
43
44#include <string>
45#include <vector>
46#include <algorithm>
47
48#define ALOGE(...) \
49    __android_log_print(ANDROID_LOG_ERROR, LOG_TAG, __VA_ARGS__);
50#define ALOGW(...) \
51    __android_log_print(ANDROID_LOG_WARN, LOG_TAG, __VA_ARGS__);
52#define ALOGD(...) \
53    __android_log_print(ANDROID_LOG_DEBUG, LOG_TAG, __VA_ARGS__);
54#define ALOGV(...) \
55    __android_log_print(ANDROID_LOG_VERBOSE, LOG_TAG, __VA_ARGS__);
56
57#if defined(_WIN32)
58#define OS_PATH_SEPARATOR '\\'
59#else
60#define OS_PATH_SEPARATOR '/'
61#endif
62
63namespace android {
64
65    // server has no Vector or String8 classes; implement on top of STL
66    class String8: public std::string {
67    public:
68    String8(const char *ptr) : std::string(ptr) {
69
70        }
71    String8(const char *ptr, size_t len) : std::string(ptr, len) {
72
73        }
74    String8() : std::string() {
75
76        }
77
78        const char* string() const {
79            return this->c_str();
80        }
81
82        void setTo(const char* str, ssize_t len) {
83            this->assign(str, len);
84        }
85        void setTo(const char* str) {
86            this->assign(str);
87        }
88        String8 getPathDir(void) const {
89            const char* cp;
90            const char*const str = this->c_str();
91
92            cp = strrchr(str, OS_PATH_SEPARATOR);
93            if (cp == NULL)
94                return String8("");
95            else
96                return String8(str, cp - str);
97        }
98    };
99
100    template <class T> class Vector: public std::vector<T> {
101    public:
102        void push(T obj) {
103            this->push_back(obj);
104        }
105        void removeAt(uint32_t index) {
106            this->erase(this->begin() + index);
107        }
108        ssize_t add(const T& obj) {
109            this->push_back(obj);
110            return this->size() - 1;
111        }
112        void setCapacity(ssize_t capacity) {
113            this->resize(capacity);
114        }
115
116        T* editArray() {
117            return (T*)(this->begin());
118        }
119
120        const T* array() {
121            return this->data();
122        }
123
124    };
125
126    template<> class Vector<bool>: public std::vector<char> {
127    public:
128        void push(bool obj) {
129            this->push_back(obj);
130        }
131        void removeAt(uint32_t index) {
132            this->erase(this->begin() + index);
133        }
134        ssize_t add(const bool& obj) {
135            this->push_back(obj);
136            return this->size() - 1;
137        }
138        void setCapacity(ssize_t capacity) {
139            this->resize(capacity);
140        }
141
142        bool* editArray() {
143            return (bool*)(&*this->begin());
144        }
145
146        const bool* array() {
147            return (const bool*)(&*this->begin());
148        }
149    };
150
151}
152
153typedef int64_t nsecs_t;  // nano-seconds
154
155enum {
156    SYSTEM_TIME_REALTIME = 0,  // system-wide realtime clock
157    SYSTEM_TIME_MONOTONIC = 1, // monotonic time since unspecified starting point
158    SYSTEM_TIME_PROCESS = 2,   // high-resolution per-process clock
159    SYSTEM_TIME_THREAD = 3,    // high-resolution per-thread clock
160};
161
162static inline nsecs_t systemTime(int clock)
163{
164#if defined(__linux__)
165    static const clockid_t clocks[] = {
166            CLOCK_REALTIME,
167            CLOCK_MONOTONIC,
168            CLOCK_PROCESS_CPUTIME_ID,
169            CLOCK_THREAD_CPUTIME_ID
170    };
171    struct timespec t;
172    t.tv_sec = t.tv_nsec = 0;
173    clock_gettime(clocks[clock], &t);
174    return nsecs_t(t.tv_sec)*1000000000LL + t.tv_nsec;
175#else
176    // we don't support the clocks here.
177    struct timeval t;
178    t.tv_sec = t.tv_usec = 0;
179    gettimeofday(&t, nullptr);
180    return nsecs_t(t.tv_sec)*1000000000LL + nsecs_t(t.tv_usec)*1000LL;
181#endif
182}
183
184static inline nsecs_t nanoseconds_to_milliseconds(nsecs_t secs)
185{
186    return secs/1000000;
187}
188
189#endif // RS_SERVER || RS_COMPATIBILITY_LIB
190
191namespace android {
192namespace renderscript {
193
194const char * rsuCopyString(const char *name);
195const char * rsuCopyString(const char *name, size_t len);
196
197#if 1
198#define rsAssert(v) do {if(!(v)) ALOGE("rsAssert failed: %s, in %s at %i", #v, __FILE__, __LINE__);} while (0)
199#else
200#define rsAssert(v) while (0)
201#endif
202
203template<typename T>
204T rsMin(T in1, T in2)
205{
206    if (in1 > in2) {
207        return in2;
208    }
209    return in1;
210}
211
212template<typename T>
213T rsMax(T in1, T in2) {
214    if (in1 < in2) {
215        return in2;
216    }
217    return in1;
218}
219
220template<typename T>
221T rsFindHighBit(T val) {
222    uint32_t bit = 0;
223    while (val > 1) {
224        bit++;
225        val>>=1;
226    }
227    return bit;
228}
229
230template<typename T>
231bool rsIsPow2(T val) {
232    return (val & (val-1)) == 0;
233}
234
235template<typename T>
236T rsHigherPow2(T v) {
237    if (rsIsPow2(v)) {
238        return v;
239    }
240    return 1 << (rsFindHighBit(v) + 1);
241}
242
243template<typename T>
244T rsLowerPow2(T v) {
245    if (rsIsPow2(v)) {
246        return v;
247    }
248    return 1 << rsFindHighBit(v);
249}
250
251template<typename T>
252T rsRound(T v, unsigned int r) {
253    // Only valid for rounding up to powers of 2.
254    if ((r & (r - 1)) != 0) {
255        rsAssert(false && "Must be power of 2 for rounding up");
256        return v;
257    }
258    T res = v + (r - 1);
259    if (res < v) {
260        rsAssert(false && "Overflow of rounding operation");
261        return v;
262    }
263    res &= ~(r - 1);
264    return res;
265}
266
267static inline uint16_t rs888to565(uint32_t r, uint32_t g, uint32_t b) {
268    uint16_t t = 0;
269    t |= b >> 3;
270    t |= (g >> 2) << 5;
271    t |= (r >> 3) << 11;
272    return t;
273}
274
275static inline uint16_t rsBoxFilter565(uint16_t i1, uint16_t i2, uint16_t i3, uint16_t i4) {
276    uint32_t r = ((i1 & 0x1f) + (i2 & 0x1f) + (i3 & 0x1f) + (i4 & 0x1f));
277    uint32_t g = ((i1 >> 5) & 0x3f) + ((i2 >> 5) & 0x3f) + ((i3 >> 5) & 0x3f) + ((i4 >> 5) & 0x3f);
278    uint32_t b = ((i1 >> 11) + (i2 >> 11) + (i3 >> 11) + (i4 >> 11));
279    return (r >> 2) | ((g >> 2) << 5) | ((b >> 2) << 11);
280}
281
282static inline uint32_t rsBoxFilter8888(uint32_t i1, uint32_t i2, uint32_t i3, uint32_t i4) {
283    uint32_t r = (i1 & 0xff) +         (i2 & 0xff) +         (i3 & 0xff) +         (i4 & 0xff);
284    uint32_t g = ((i1 >> 8) & 0xff) +  ((i2 >> 8) & 0xff) +  ((i3 >> 8) & 0xff) +  ((i4 >> 8) & 0xff);
285    uint32_t b = ((i1 >> 16) & 0xff) + ((i2 >> 16) & 0xff) + ((i3 >> 16) & 0xff) + ((i4 >> 16) & 0xff);
286    uint32_t a = ((i1 >> 24) & 0xff) + ((i2 >> 24) & 0xff) + ((i3 >> 24) & 0xff) + ((i4 >> 24) & 0xff);
287    return (r >> 2) | ((g >> 2) << 8) | ((b >> 2) << 16) | ((a >> 2) << 24);
288}
289
290const char* rsuJoinStrings(int n, const char* const* strs);
291
292#ifndef RS_COMPATIBILITY_LIB
293// Utility to fork/exec a command.
294//     exe - Command to execute
295//     nArgs - Number of arguments (excluding the trailing nullptr in args)
296//     args - Arguments to the command
297bool rsuExecuteCommand(const char *exe, int nArgs, const char * const *args);
298#endif
299
300
301}
302}
303
304#endif //ANDROID_RS_OBJECT_BASE_H
305
306
307