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