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      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 
     35 namespace android {
     36 namespace 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 
     44 template<typename T>
     45 T rsMin(T in1, T in2)
     46 {
     47     if (in1 > in2) {
     48         return in2;
     49     }
     50     return in1;
     51 }
     52 
     53 template<typename T>
     54 T rsMax(T in1, T in2)
     55 {
     56     if (in1 < in2) {
     57         return in2;
     58     }
     59     return in1;
     60 }
     61 
     62 template<typename T>
     63 T rsFindHighBit(T val)
     64 {
     65     uint32_t bit = 0;
     66     while(val > 1) {
     67         bit++;
     68         val>>=1;
     69     }
     70     return bit;
     71 }
     72 
     73 template<typename T>
     74 bool rsIsPow2(T val)
     75 {
     76     return (val & (val-1)) == 0;
     77 }
     78 
     79 template<typename T>
     80 T rsHigherPow2(T v)
     81 {
     82     if (rsIsPow2(v)) {
     83         return v;
     84     }
     85     return 1 << (rsFindHighBit(v) + 1);
     86 }
     87 
     88 template<typename T>
     89 T rsLowerPow2(T v)
     90 {
     91     if (rsIsPow2(v)) {
     92         return v;
     93     }
     94     return 1 << rsFindHighBit(v);
     95 }
     96 
     97 
     98 static 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 
    107 static 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 
    115 static 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