rsUtils.h revision 565ac36ee479f9d7b83e2030ac9646a09cb886a1
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 <stdint.h> 21#include <sys/types.h> 22#include <stdlib.h> 23 24namespace android { 25namespace renderscript { 26 27#if 1 28#define rsAssert(v) do {if(!(v)) LOGE("rsAssert failed: %s, in %s at %i", #v, __FILE__, __LINE__);} while(0) 29#else 30#define rsAssert(v) while(0) 31#endif 32 33template<typename T> 34T rsMin(T in1, T in2) 35{ 36 if (in1 > in2) { 37 return in2; 38 } 39 return in1; 40} 41 42template<typename T> 43T rsMax(T in1, T in2) 44{ 45 if (in1 < in2) { 46 return in2; 47 } 48 return in1; 49} 50 51template<typename T> 52T rsFindHighBit(T val) 53{ 54 uint32_t bit = 0; 55 while(val > 1) { 56 bit++; 57 val>>=1; 58 } 59 return bit; 60} 61 62template<typename T> 63bool rsIsPow2(T val) 64{ 65 return (val & (val-1)) == 0; 66} 67 68template<typename T> 69T rsHigherPow2(T v) 70{ 71 if (rsIsPow2(v)) { 72 return v; 73 } 74 return 1 << (rsFindHighBit(v) + 1); 75} 76 77template<typename T> 78T rsLowerPow2(T v) 79{ 80 if (rsIsPow2(v)) { 81 return v; 82 } 83 return 1 << rsFindHighBit(v); 84} 85 86 87static inline uint16_t rs888to565(uint32_t r, uint32_t g, uint32_t b) 88{ 89 uint16_t t = 0; 90 t |= b >> 3; 91 t |= (g >> 2) << 5; 92 t |= (r >> 3) << 11; 93 return t; 94} 95 96static inline uint16_t rsBoxFilter565(uint16_t i1, uint16_t i2, uint16_t i3, uint16_t i4) 97{ 98 uint32_t r = ((i1 & 0x1f) + (i2 & 0x1f) + (i3 & 0x1f) + (i4 & 0x1f)); 99 uint32_t g = ((i1 >> 5) & 0x3f) + ((i2 >> 5) & 0x3f) + ((i3 >> 5) & 0x3f) + ((i4 >> 5) & 0x3f); 100 uint32_t b = ((i1 >> 11) + (i2 >> 11) + (i3 >> 11) + (i4 >> 11)); 101 return (r >> 2) | ((g >> 2) << 5) | ((b >> 2) << 11); 102} 103 104static inline uint32_t rsBoxFilter8888(uint32_t i1, uint32_t i2, uint32_t i3, uint32_t i4) 105{ 106 uint32_t r = (i1 & 0xff) + (i2 & 0xff) + (i3 & 0xff) + (i4 & 0xff); 107 uint32_t g = ((i1 >> 8) & 0xff) + ((i2 >> 8) & 0xff) + ((i3 >> 8) & 0xff) + ((i4 >> 8) & 0xff); 108 uint32_t b = ((i1 >> 16) & 0xff) + ((i2 >> 16) & 0xff) + ((i3 >> 16) & 0xff) + ((i4 >> 16) & 0xff); 109 uint32_t a = ((i1 >> 24) & 0xff) + ((i2 >> 24) & 0xff) + ((i3 >> 24) & 0xff) + ((i4 >> 24) & 0xff); 110 return (r >> 2) | ((g >> 2) << 8) | ((b >> 2) << 16) | ((a >> 2) << 24); 111} 112 113 114 115} 116} 117 118#endif //ANDROID_RS_OBJECT_BASE_H 119 120 121