rsUtils.h revision 613cad1702dbb76eb2a6ba0cfcb43b9fe207cebc 
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#include <utils/Log.h>
23#include <utils/Vector.h>
24#include <utils/KeyedVector.h>
25#include <utils/String8.h>
26#include <stdlib.h>
27#include <pthread.h>
28#include <time.h>
29
30#include <EGL/egl.h>
31#include <math.h>
32
33#include "RenderScript.h"
34
35namespace android {
36namespace renderscript {
37
38#if 1
39#define rsAssert(v) do {if(!(v)) LOGE("rsAssert failed: %s, in %s at %i", #v, __FILE__, __LINE__);} while(0)
40#else
41#define rsAssert(v) while(0)
42#endif
43
44template<typename T>
45T rsMin(T in1, T in2)
46{
47    if (in1 > in2) {
48        return in2;
49    }
50    return in1;
51}
52
53template<typename T>
54T rsMax(T in1, T in2)
55{
56    if (in1 < in2) {
57        return in2;
58    }
59    return in1;
60}
61
62template<typename T>
63T rsFindHighBit(T val)
64{
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{
76    return (val & (val-1)) == 0;
77}
78
79template<typename T>
80T rsHigherPow2(T v)
81{
82    if (rsIsPow2(v)) {
83        return v;
84    }
85    return 1 << (rsFindHighBit(v) + 1);
86}
87
88template<typename T>
89T rsLowerPow2(T v)
90{
91    if (rsIsPow2(v)) {
92        return v;
93    }
94    return 1 << rsFindHighBit(v);
95}
96
97
98static inline uint16_t rs888to565(uint32_t r, uint32_t g, uint32_t b)
99{
100    uint16_t t = 0;
101    t |= b >> 3;
102    t |= (g >> 2) << 5;
103    t |= (r >> 3) << 11;
104    return t;
105}
106
107static inline uint16_t rsBoxFilter565(uint16_t i1, uint16_t i2, uint16_t i3, uint16_t i4)
108{
109    uint32_t r = ((i1 & 0x1f) + (i2 & 0x1f) + (i3 & 0x1f) + (i4 & 0x1f));
110    uint32_t g = ((i1 >> 5) & 0x3f) + ((i2 >> 5) & 0x3f) + ((i3 >> 5) & 0x3f) + ((i4 >> 5) & 0x3f);
111    uint32_t b = ((i1 >> 11) + (i2 >> 11) + (i3 >> 11) + (i4 >> 11));
112    return (r >> 2) | ((g >> 2) << 5) | ((b >> 2) << 11);
113}
114
115static inline uint32_t rsBoxFilter8888(uint32_t i1, uint32_t i2, uint32_t i3, uint32_t i4)
116{
117    uint32_t r = (i1 & 0xff) +         (i2 & 0xff) +         (i3 & 0xff) +         (i4 & 0xff);
118    uint32_t g = ((i1 >> 8) & 0xff) +  ((i2 >> 8) & 0xff) +  ((i3 >> 8) & 0xff) +  ((i4 >> 8) & 0xff);
119    uint32_t b = ((i1 >> 16) & 0xff) + ((i2 >> 16) & 0xff) + ((i3 >> 16) & 0xff) + ((i4 >> 16) & 0xff);
120    uint32_t a = ((i1 >> 24) & 0xff) + ((i2 >> 24) & 0xff) + ((i3 >> 24) & 0xff) + ((i4 >> 24) & 0xff);
121    return (r >> 2) | ((g >> 2) << 8) | ((b >> 2) << 16) | ((a >> 2) << 24);
122}
123
124
125
126}
127}
128
129#endif //ANDROID_RS_OBJECT_BASE_H
130
131
132