rsUtils.h revision 1b937f5c0d66a65daf07a45554c98a9f2481b9ba 
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
34#ifndef ANDROID_RS_BUILD_FOR_HOST
35#include <EGL/egl.h>
36#endif
37
38#include <math.h>
39
40#include "RenderScript.h"
41
42namespace android {
43namespace renderscript {
44
45#if 1
46#define rsAssert(v) do {if(!(v)) LOGE("rsAssert failed: %s, in %s at %i", #v, __FILE__, __LINE__);} while(0)
47#else
48#define rsAssert(v) while(0)
49#endif
50
51typedef float rsvF_2 __attribute__ ((vector_size (8)));
52typedef float rsvF_4 __attribute__ ((vector_size (16)));
53typedef uint8_t rsvU8_4 __attribute__ ((vector_size (4)));
54
55union float2 {
56    rsvF_2 v;
57    float f[2];
58};
59
60union float4 {
61    rsvF_4 v;
62    float f[4];
63};
64
65union uchar4 {
66    rsvU8_4 v;
67    uint8_t f[4];
68    uint32_t packed;
69};
70
71template<typename T>
72T rsMin(T in1, T in2)
73{
74    if (in1 > in2) {
75        return in2;
76    }
77    return in1;
78}
79
80template<typename T>
81T rsMax(T in1, T in2)
82{
83    if (in1 < in2) {
84        return in2;
85    }
86    return in1;
87}
88
89template<typename T>
90T rsFindHighBit(T val)
91{
92    uint32_t bit = 0;
93    while(val > 1) {
94        bit++;
95        val>>=1;
96    }
97    return bit;
98}
99
100template<typename T>
101bool rsIsPow2(T val)
102{
103    return (val & (val-1)) == 0;
104}
105
106template<typename T>
107T rsHigherPow2(T v)
108{
109    if (rsIsPow2(v)) {
110        return v;
111    }
112    return 1 << (rsFindHighBit(v) + 1);
113}
114
115template<typename T>
116T rsLowerPow2(T v)
117{
118    if (rsIsPow2(v)) {
119        return v;
120    }
121    return 1 << rsFindHighBit(v);
122}
123
124
125static inline uint16_t rs888to565(uint32_t r, uint32_t g, uint32_t b)
126{
127    uint16_t t = 0;
128    t |= b >> 3;
129    t |= (g >> 2) << 5;
130    t |= (r >> 3) << 11;
131    return t;
132}
133
134static inline uint16_t rsBoxFilter565(uint16_t i1, uint16_t i2, uint16_t i3, uint16_t i4)
135{
136    uint32_t r = ((i1 & 0x1f) + (i2 & 0x1f) + (i3 & 0x1f) + (i4 & 0x1f));
137    uint32_t g = ((i1 >> 5) & 0x3f) + ((i2 >> 5) & 0x3f) + ((i3 >> 5) & 0x3f) + ((i4 >> 5) & 0x3f);
138    uint32_t b = ((i1 >> 11) + (i2 >> 11) + (i3 >> 11) + (i4 >> 11));
139    return (r >> 2) | ((g >> 2) << 5) | ((b >> 2) << 11);
140}
141
142static inline uint32_t rsBoxFilter8888(uint32_t i1, uint32_t i2, uint32_t i3, uint32_t i4)
143{
144    uint32_t r = (i1 & 0xff) +         (i2 & 0xff) +         (i3 & 0xff) +         (i4 & 0xff);
145    uint32_t g = ((i1 >> 8) & 0xff) +  ((i2 >> 8) & 0xff) +  ((i3 >> 8) & 0xff) +  ((i4 >> 8) & 0xff);
146    uint32_t b = ((i1 >> 16) & 0xff) + ((i2 >> 16) & 0xff) + ((i3 >> 16) & 0xff) + ((i4 >> 16) & 0xff);
147    uint32_t a = ((i1 >> 24) & 0xff) + ((i2 >> 24) & 0xff) + ((i3 >> 24) & 0xff) + ((i4 >> 24) & 0xff);
148    return (r >> 2) | ((g >> 2) << 8) | ((b >> 2) << 16) | ((a >> 2) << 24);
149}
150
151
152
153}
154}
155
156#endif //ANDROID_RS_OBJECT_BASE_H
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