rsUtils.h revision f29ca50d80e3dc379de1642e85b7963175b2ca38 
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 "rs"
22#include <utils/Log.h>
23#include <utils/Vector.h>
24#include <stdlib.h>
25#include <pthread.h>
26
27#include "RenderScript.h"
28
29namespace android {
30namespace renderscript {
31
32#if 1
33#define rsAssert(v) do {if(!(v)) LOGE("rsAssert failed: %s, in %s at %i", #v, __FILE__, __LINE__);} while(0)
34#else
35#define rsAssert(v) while(0)
36#endif
37
38template<typename T>
39T rsMin(T in1, T in2)
40{
41    if (in1 > in2) {
42        return in2;
43    }
44    return in1;
45}
46
47template<typename T>
48T rsMax(T in1, T in2)
49{
50    if (in1 < in2) {
51        return in2;
52    }
53    return in1;
54}
55
56template<typename T>
57T rsFindHighBit(T val)
58{
59    uint32_t bit = 0;
60    while(val > 1) {
61        bit++;
62        val>>=1;
63    }
64    return bit;
65}
66
67template<typename T>
68bool rsIsPow2(T val)
69{
70    return (val & (val-1)) == 0;
71}
72
73template<typename T>
74T rsHigherPow2(T v)
75{
76    if (rsIsPow2(v)) {
77        return v;
78    }
79    return 1 << (rsFindHighBit(v) + 1);
80}
81
82template<typename T>
83T rsLowerPow2(T v)
84{
85    if (rsIsPow2(v)) {
86        return v;
87    }
88    return 1 << rsFindHighBit(v);
89}
90
91
92static inline uint16_t rs888to565(uint32_t r, uint32_t g, uint32_t b)
93{
94    uint16_t t = 0;
95    t |= b >> 3;
96    t |= (g >> 2) << 5;
97    t |= (r >> 3) << 11;
98    return t;
99}
100
101static inline uint16_t rsBoxFilter565(uint16_t i1, uint16_t i2, uint16_t i3, uint16_t i4)
102{
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{
111    uint32_t r = (i1 & 0xff) +         (i2 & 0xff) +         (i3 & 0xff) +         (i4 & 0xff);
112    uint32_t g = ((i1 >> 8) & 0xff) +  ((i2 >> 8) & 0xff) +  ((i3 >> 8) & 0xff) +  ((i4 >> 8) & 0xff);
113    uint32_t b = ((i1 >> 16) & 0xff) + ((i2 >> 16) & 0xff) + ((i3 >> 16) & 0xff) + ((i4 >> 16) & 0xff);
114    uint32_t a = ((i1 >> 24) & 0xff) + ((i2 >> 24) & 0xff) + ((i3 >> 24) & 0xff) + ((i4 >> 24) & 0xff);
115    return (r >> 2) | ((g >> 2) << 8) | ((b >> 2) << 16) | ((a >> 2) << 24);
116}
117
118
119
120}
121}
122
123#endif //ANDROID_RS_OBJECT_BASE_H
124
125
126