rsCppUtils.h revision 43cfc0cbe6e6e8f585a0ae5f1d9cc2859ab1dda7 
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#include <string>
42#include <vector>
43#include <algorithm>
44
45#define ALOGE(...) \
46    __android_log_print(ANDROID_LOG_ERROR, LOG_TAG, __VA_ARGS__);
47#define ALOGW(...) \
48    __android_log_print(ANDROID_LOG_WARN, LOG_TAG, __VA_ARGS__);
49#define ALOGD(...) \
50    __android_log_print(ANDROID_LOG_DEBUG, LOG_TAG, __VA_ARGS__);
51#define ALOGV(...) \
52    __android_log_print(ANDROID_LOG_VERBOSE, LOG_TAG, __VA_ARGS__);
53
54namespace android {
55
56    // server has no Vector or String8 classes; implement on top of STL
57    class String8: public std::string {
58    public:
59    String8(const char *ptr) : std::string(ptr) {
60
61        }
62    String8(const char *ptr, size_t len) : std::string(ptr, len) {
63
64        }
65    String8() : std::string() {
66
67        }
68
69        const char* string() const {
70            return this->c_str();
71        }
72
73        void setTo(const char* str, ssize_t len) {
74            this->assign(str, len);
75        }
76        void setTo(const char* str) {
77            this->assign(str);
78        }
79        String8 getPathDir(void) const {
80            const char* cp;
81            const char*const str = this->c_str();
82
83            cp = strrchr(str, OS_PATH_SEPARATOR);
84            if (cp == NULL)
85                return String8("");
86            else
87                return String8(str, cp - str);
88        }
89    };
90
91    template <class T> class Vector: public std::vector<T> {
92    public:
93        void push(T obj) {
94            this->push_back(obj);
95        }
96        void removeAt(uint32_t index) {
97            this->erase(this->begin() + index);
98        }
99        ssize_t add(const T& obj) {
100            this->push_back(obj);
101            return this->size() - 1;
102        }
103        void setCapacity(ssize_t capacity) {
104            this->resize(capacity);
105        }
106
107        T* editArray() {
108            return (T*)(this->begin());
109        }
110
111        const T* array() {
112            return (const T*)(this->begin());
113        }
114
115    };
116
117    template<> class Vector<bool>: public std::vector<char> {
118    public:
119        void push(bool obj) {
120            this->push_back(obj);
121        }
122        void removeAt(uint32_t index) {
123            this->erase(this->begin() + index);
124        }
125        ssize_t add(const bool& obj) {
126            this->push_back(obj);
127            return this->size() - 1;
128        }
129        void setCapacity(ssize_t capacity) {
130            this->resize(capacity);
131        }
132
133        bool* editArray() {
134            return (bool*)(this->begin());
135        }
136
137        const bool* array() {
138            return (const bool*)(this->begin());
139        }
140    };
141
142}
143
144typedef int64_t nsecs_t;  // nano-seconds
145
146enum {
147    SYSTEM_TIME_REALTIME = 0,  // system-wide realtime clock
148    SYSTEM_TIME_MONOTONIC = 1, // monotonic time since unspecified starting point
149    SYSTEM_TIME_PROCESS = 2,   // high-resolution per-process clock
150    SYSTEM_TIME_THREAD = 3,    // high-resolution per-thread clock
151};
152
153static inline nsecs_t systemTime(int clock)
154{
155#if defined(HAVE_POSIX_CLOCKS)
156    static const clockid_t clocks[] = {
157            CLOCK_REALTIME,
158            CLOCK_MONOTONIC,
159            CLOCK_PROCESS_CPUTIME_ID,
160            CLOCK_THREAD_CPUTIME_ID
161    };
162    struct timespec t;
163    t.tv_sec = t.tv_nsec = 0;
164    clock_gettime(clocks[clock], &t);
165    return nsecs_t(t.tv_sec)*1000000000LL + t.tv_nsec;
166#else
167    // we don't support the clocks here.
168    struct timeval t;
169    t.tv_sec = t.tv_usec = 0;
170    gettimeofday(&t, NULL);
171    return nsecs_t(t.tv_sec)*1000000000LL + nsecs_t(t.tv_usec)*1000LL;
172#endif
173}
174
175static inline nsecs_t nanoseconds_to_milliseconds(nsecs_t secs)
176{
177    return secs/1000000;
178}
179
180
181#endif // RS_SERVER || RS_COMPATIBILITY_LIB
182
183namespace android {
184namespace renderscript {
185
186#if 1
187#define rsAssert(v) do {if(!(v)) ALOGE("rsAssert failed: %s, in %s at %i", #v, __FILE__, __LINE__);} while (0)
188#else
189#define rsAssert(v) while (0)
190#endif
191
192template<typename T>
193T rsMin(T in1, T in2)
194{
195    if (in1 > in2) {
196        return in2;
197    }
198    return in1;
199}
200
201template<typename T>
202T rsMax(T in1, T in2) {
203    if (in1 < in2) {
204        return in2;
205    }
206    return in1;
207}
208
209template<typename T>
210T rsFindHighBit(T val) {
211    uint32_t bit = 0;
212    while (val > 1) {
213        bit++;
214        val>>=1;
215    }
216    return bit;
217}
218
219template<typename T>
220bool rsIsPow2(T val) {
221    return (val & (val-1)) == 0;
222}
223
224template<typename T>
225T rsHigherPow2(T v) {
226    if (rsIsPow2(v)) {
227        return v;
228    }
229    return 1 << (rsFindHighBit(v) + 1);
230}
231
232template<typename T>
233T rsLowerPow2(T v) {
234    if (rsIsPow2(v)) {
235        return v;
236    }
237    return 1 << rsFindHighBit(v);
238}
239
240template<typename T>
241T rsRound(T v, unsigned int r) {
242    // Only valid for rounding up to powers of 2.
243    if ((r & (r - 1)) != 0) {
244        rsAssert(false && "Must be power of 2 for rounding up");
245        return v;
246    }
247    T res = v + (r - 1);
248    if (res < v) {
249        rsAssert(false && "Overflow of rounding operation");
250        return v;
251    }
252    res &= ~(r - 1);
253    return res;
254}
255
256static inline uint16_t rs888to565(uint32_t r, uint32_t g, uint32_t b) {
257    uint16_t t = 0;
258    t |= b >> 3;
259    t |= (g >> 2) << 5;
260    t |= (r >> 3) << 11;
261    return t;
262}
263
264static inline uint16_t rsBoxFilter565(uint16_t i1, uint16_t i2, uint16_t i3, uint16_t i4) {
265    uint32_t r = ((i1 & 0x1f) + (i2 & 0x1f) + (i3 & 0x1f) + (i4 & 0x1f));
266    uint32_t g = ((i1 >> 5) & 0x3f) + ((i2 >> 5) & 0x3f) + ((i3 >> 5) & 0x3f) + ((i4 >> 5) & 0x3f);
267    uint32_t b = ((i1 >> 11) + (i2 >> 11) + (i3 >> 11) + (i4 >> 11));
268    return (r >> 2) | ((g >> 2) << 5) | ((b >> 2) << 11);
269}
270
271static inline uint32_t rsBoxFilter8888(uint32_t i1, uint32_t i2, uint32_t i3, uint32_t i4) {
272    uint32_t r = (i1 & 0xff) +         (i2 & 0xff) +         (i3 & 0xff) +         (i4 & 0xff);
273    uint32_t g = ((i1 >> 8) & 0xff) +  ((i2 >> 8) & 0xff) +  ((i3 >> 8) & 0xff) +  ((i4 >> 8) & 0xff);
274    uint32_t b = ((i1 >> 16) & 0xff) + ((i2 >> 16) & 0xff) + ((i3 >> 16) & 0xff) + ((i4 >> 16) & 0xff);
275    uint32_t a = ((i1 >> 24) & 0xff) + ((i2 >> 24) & 0xff) + ((i3 >> 24) & 0xff) + ((i4 >> 24) & 0xff);
276    return (r >> 2) | ((g >> 2) << 8) | ((b >> 2) << 16) | ((a >> 2) << 24);
277}
278
279}
280}
281
282#endif //ANDROID_RS_OBJECT_BASE_H
283
284
285