1/*
2 * Copyright (C) 2009 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_UTILS_H
18#define ANDROID_RS_UTILS_H
19
20#define LOG_NDEBUG 0
21#define LOG_TAG "RenderScript"
22
23#include <utils/Log.h>
24
25#include "rsStream.h"
26
27#include <utils/String8.h>
28#include <utils/Vector.h>
29
30#include <stdlib.h>
31#include <pthread.h>
32#include <time.h>
33#include <cutils/atomic.h>
34
35#include <math.h>
36
37namespace android {
38namespace renderscript {
39
40#if 1
41#define rsAssert(v) do {if(!(v)) ALOGE("rsAssert failed: %s, in %s at %i", #v, __FILE__, __LINE__);} while (0)
42#else
43#define rsAssert(v) while (0)
44#endif
45
46template<typename T>
47T rsMin(T in1, T in2)
48{
49    if (in1 > in2) {
50        return in2;
51    }
52    return in1;
53}
54
55template<typename T>
56T rsMax(T in1, T in2) {
57    if (in1 < in2) {
58        return in2;
59    }
60    return in1;
61}
62
63template<typename T>
64T rsFindHighBit(T val) {
65    uint32_t bit = 0;
66    while (val > 1) {
67        bit++;
68        val>>=1;
69    }
70    return bit;
71}
72
73template<typename T>
74bool rsIsPow2(T val) {
75    return (val & (val-1)) == 0;
76}
77
78template<typename T>
79T rsHigherPow2(T v) {
80    if (rsIsPow2(v)) {
81        return v;
82    }
83    return 1 << (rsFindHighBit(v) + 1);
84}
85
86template<typename T>
87T rsLowerPow2(T v) {
88    if (rsIsPow2(v)) {
89        return v;
90    }
91    return 1 << rsFindHighBit(v);
92}
93
94static inline uint16_t rs888to565(uint32_t r, uint32_t g, uint32_t b) {
95    uint16_t t = 0;
96    t |= b >> 3;
97    t |= (g >> 2) << 5;
98    t |= (r >> 3) << 11;
99    return t;
100}
101
102static inline uint16_t rsBoxFilter565(uint16_t i1, uint16_t i2, uint16_t i3, uint16_t i4) {
103    uint32_t r = ((i1 & 0x1f) + (i2 & 0x1f) + (i3 & 0x1f) + (i4 & 0x1f));
104    uint32_t g = ((i1 >> 5) & 0x3f) + ((i2 >> 5) & 0x3f) + ((i3 >> 5) & 0x3f) + ((i4 >> 5) & 0x3f);
105    uint32_t b = ((i1 >> 11) + (i2 >> 11) + (i3 >> 11) + (i4 >> 11));
106    return (r >> 2) | ((g >> 2) << 5) | ((b >> 2) << 11);
107}
108
109static inline uint32_t rsBoxFilter8888(uint32_t i1, uint32_t i2, uint32_t i3, uint32_t i4) {
110    uint32_t r = (i1 & 0xff) +         (i2 & 0xff) +         (i3 & 0xff) +         (i4 & 0xff);
111    uint32_t g = ((i1 >> 8) & 0xff) +  ((i2 >> 8) & 0xff) +  ((i3 >> 8) & 0xff) +  ((i4 >> 8) & 0xff);
112    uint32_t b = ((i1 >> 16) & 0xff) + ((i2 >> 16) & 0xff) + ((i3 >> 16) & 0xff) + ((i4 >> 16) & 0xff);
113    uint32_t a = ((i1 >> 24) & 0xff) + ((i2 >> 24) & 0xff) + ((i3 >> 24) & 0xff) + ((i4 >> 24) & 0xff);
114    return (r >> 2) | ((g >> 2) << 8) | ((b >> 2) << 16) | ((a >> 2) << 24);
115}
116
117}
118}
119
120#endif //ANDROID_RS_OBJECT_BASE_H
121
122
123