rsUtils.h revision 1aa5a4eb81b8b88aeb5d2b6f4c47356fd0a62923 
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#include "RenderScript.h"
21
22#define LOG_TAG "rs"
23#include <utils/Log.h>
24#include <utils/Vector.h>
25#include <stdlib.h>
26#include <pthread.h>
27
28namespace android {
29namespace renderscript {
30
31#if 1
32#define rsAssert(v) do {if(!(v)) LOGE("rsAssert failed: %s, in %s at %i", #v, __FILE__, __LINE__);} while(0)
33#else
34#define rsAssert(v) while(0)
35#endif
36
37template<typename T>
38T rsMin(T in1, T in2)
39{
40    if (in1 > in2) {
41        return in2;
42    }
43    return in1;
44}
45
46template<typename T>
47T rsMax(T in1, T in2)
48{
49    if (in1 < in2) {
50        return in2;
51    }
52    return in1;
53}
54
55template<typename T>
56T rsFindHighBit(T val)
57{
58    uint32_t bit = 0;
59    while(val > 1) {
60        bit++;
61        val>>=1;
62    }
63    return bit;
64}
65
66template<typename T>
67bool rsIsPow2(T val)
68{
69    return (val & (val-1)) == 0;
70}
71
72template<typename T>
73T rsHigherPow2(T v)
74{
75    if (rsIsPow2(v)) {
76        return v;
77    }
78    return 1 << (rsFindHighBit(v) + 1);
79}
80
81template<typename T>
82T rsLowerPow2(T v)
83{
84    if (rsIsPow2(v)) {
85        return v;
86    }
87    return 1 << rsFindHighBit(v);
88}
89
90
91static inline uint16_t rs888to565(uint32_t r, uint32_t g, uint32_t b)
92{
93    uint16_t t = 0;
94    t |= b >> 3;
95    t |= (g >> 2) << 5;
96    t |= (r >> 3) << 11;
97    return t;
98}
99
100static inline uint16_t rsBoxFilter565(uint16_t i1, uint16_t i2, uint16_t i3, uint16_t i4)
101{
102    uint32_t r = ((i1 & 0x1f) + (i2 & 0x1f) + (i3 & 0x1f) + (i4 & 0x1f));
103    uint32_t g = ((i1 >> 5) & 0x3f) + ((i2 >> 5) & 0x3f) + ((i3 >> 5) & 0x3f) + ((i4 >> 5) & 0x3f);
104    uint32_t b = ((i1 >> 11) + (i2 >> 11) + (i3 >> 11) + (i4 >> 11));
105    return (r >> 2) | ((g >> 2) << 5) | ((b >> 2) << 11);
106}
107
108static inline uint32_t rsBoxFilter8888(uint32_t i1, uint32_t i2, uint32_t i3, uint32_t i4)
109{
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}
121
122#endif //ANDROID_RS_OBJECT_BASE_H
123
124
125