rsCppUtils.h revision f9e077a531c6a83e978d55f427b5d8ff6d2c943f 
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#ifndef RS_SERVER
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_SERVER
36
37#include <string>
38#include <vector>
39#include <algorithm>
40
41namespace android {
42
43    // server has no Vector or String8 classes; implement on top of STL
44    class String8: public std::string {
45    public:
46    String8(const char *ptr) : std::string(ptr) {
47
48        }
49    String8() : std::string() {
50
51        }
52
53        const char* string() const {
54            return this->c_str();
55        }
56
57        void setTo(const char* str, ssize_t len) {
58            this->assign(str, len);
59        }
60        void setTo(const char* str) {
61            this->assign(str);
62        }
63
64    };
65
66    template <class T> class Vector: public std::vector<T> {
67    public:
68        void push(T obj) {
69            this->push_back(obj);
70        }
71        void removeAt(uint32_t index) {
72            this->erase(this->begin() + index);
73        }
74        ssize_t add(const T& obj) {
75            this->push_back(obj);
76            return this->size() - 1;
77        }
78        void setCapacity(ssize_t capacity) {
79            this->resize(capacity);
80        }
81
82        T* editArray() {
83            return this->data();
84        }
85
86        const T* array() {
87            return this->data();
88        }
89
90    };
91
92    template<> class Vector<bool>: public std::vector<char> {
93    public:
94        void push(bool obj) {
95            this->push_back(obj);
96        }
97        void removeAt(uint32_t index) {
98            this->erase(this->begin() + index);
99        }
100        ssize_t add(const bool& obj) {
101            this->push_back(obj);
102            return this->size() - 1;
103        }
104        void setCapacity(ssize_t capacity) {
105            this->resize(capacity);
106        }
107
108        bool* editArray() {
109            return (bool*)this->data();
110        }
111
112        const bool* array() {
113            return (const bool*)this->data();
114        }
115    };
116
117}
118
119#endif // RS_SERVER
120
121namespace android {
122namespace renderscript {
123
124#if 1
125#define rsAssert(v) do {if(!(v)) ALOGE("rsAssert failed: %s, in %s at %i", #v, __FILE__, __LINE__);} while (0)
126#else
127#define rsAssert(v) while (0)
128#endif
129
130template<typename T>
131T rsMin(T in1, T in2)
132{
133    if (in1 > in2) {
134        return in2;
135    }
136    return in1;
137}
138
139template<typename T>
140T rsMax(T in1, T in2) {
141    if (in1 < in2) {
142        return in2;
143    }
144    return in1;
145}
146
147template<typename T>
148T rsFindHighBit(T val) {
149    uint32_t bit = 0;
150    while (val > 1) {
151        bit++;
152        val>>=1;
153    }
154    return bit;
155}
156
157template<typename T>
158bool rsIsPow2(T val) {
159    return (val & (val-1)) == 0;
160}
161
162template<typename T>
163T rsHigherPow2(T v) {
164    if (rsIsPow2(v)) {
165        return v;
166    }
167    return 1 << (rsFindHighBit(v) + 1);
168}
169
170template<typename T>
171T rsLowerPow2(T v) {
172    if (rsIsPow2(v)) {
173        return v;
174    }
175    return 1 << rsFindHighBit(v);
176}
177
178template<typename T>
179T rsRound(T v, unsigned int r) {
180    // Only valid for rounding up to powers of 2.
181    if ((r & (r - 1)) != 0) {
182        rsAssert(false && "Must be power of 2 for rounding up");
183        return v;
184    }
185    T res = v + (r - 1);
186    if (res < v) {
187        rsAssert(false && "Overflow of rounding operation");
188        return v;
189    }
190    res &= ~(r - 1);
191    return res;
192}
193
194static inline uint16_t rs888to565(uint32_t r, uint32_t g, uint32_t b) {
195    uint16_t t = 0;
196    t |= b >> 3;
197    t |= (g >> 2) << 5;
198    t |= (r >> 3) << 11;
199    return t;
200}
201
202static inline uint16_t rsBoxFilter565(uint16_t i1, uint16_t i2, uint16_t i3, uint16_t i4) {
203    uint32_t r = ((i1 & 0x1f) + (i2 & 0x1f) + (i3 & 0x1f) + (i4 & 0x1f));
204    uint32_t g = ((i1 >> 5) & 0x3f) + ((i2 >> 5) & 0x3f) + ((i3 >> 5) & 0x3f) + ((i4 >> 5) & 0x3f);
205    uint32_t b = ((i1 >> 11) + (i2 >> 11) + (i3 >> 11) + (i4 >> 11));
206    return (r >> 2) | ((g >> 2) << 5) | ((b >> 2) << 11);
207}
208
209static inline uint32_t rsBoxFilter8888(uint32_t i1, uint32_t i2, uint32_t i3, uint32_t i4) {
210    uint32_t r = (i1 & 0xff) +         (i2 & 0xff) +         (i3 & 0xff) +         (i4 & 0xff);
211    uint32_t g = ((i1 >> 8) & 0xff) +  ((i2 >> 8) & 0xff) +  ((i3 >> 8) & 0xff) +  ((i4 >> 8) & 0xff);
212    uint32_t b = ((i1 >> 16) & 0xff) + ((i2 >> 16) & 0xff) + ((i3 >> 16) & 0xff) + ((i4 >> 16) & 0xff);
213    uint32_t a = ((i1 >> 24) & 0xff) + ((i2 >> 24) & 0xff) + ((i3 >> 24) & 0xff) + ((i4 >> 24) & 0xff);
214    return (r >> 2) | ((g >> 2) << 8) | ((b >> 2) << 16) | ((a >> 2) << 24);
215}
216
217}
218}
219
220#endif //ANDROID_RS_OBJECT_BASE_H
221
222
223