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
57namespace android {
58namespace renderscript {
59
60typedef int64_t nsecs_t;  // nano-seconds
61
62enum {
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
69static 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
91static 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
102template<typename T>
103T rsMin(T in1, T in2)
104{
105    if (in1 > in2) {
106        return in2;
107    }
108    return in1;
109}
110
111template<typename T>
112T rsMax(T in1, T in2) {
113    if (in1 < in2) {
114        return in2;
115    }
116    return in1;
117}
118
119template<typename T>
120T rsFindHighBit(T val) {
121    uint32_t bit = 0;
122    while (val > 1) {
123        bit++;
124        val>>=1;
125    }
126    return bit;
127}
128
129template<typename T>
130bool rsIsPow2(T val) {
131    return (val & (val-1)) == 0;
132}
133
134template<typename T>
135T rsHigherPow2(T v) {
136    if (rsIsPow2(v)) {
137        return v;
138    }
139    return 1 << (rsFindHighBit(v) + 1);
140}
141
142template<typename T>
143T rsLowerPow2(T v) {
144    if (rsIsPow2(v)) {
145        return v;
146    }
147    return 1 << rsFindHighBit(v);
148}
149
150template<typename T>
151T 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
166static 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
174static 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
181static 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
189const char * rsuCopyString(const char *name);
190const char * rsuCopyString(const char *name, size_t len);
191const 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
198bool rsuExecuteCommand(const char *exe, int nArgs, const char * const *args);
199#endif
200
201int 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