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/*
* Copyright (C) 2009 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#ifndef ANDROID_RS_UTILS_H
#define ANDROID_RS_UTILS_H
#include <stdint.h>
#include <sys/types.h>
#include <stdlib.h>
namespace android {
namespace renderscript {
#if 1
#define rsAssert(v) do {if(!(v)) LOGE("rsAssert failed: %s, in %s at %i", #v, __FILE__, __LINE__);} while(0)
#else
#define rsAssert(v) while(0)
#endif
template<typename T>
T rsMin(T in1, T in2)
{
if (in1 > in2) {
return in2;
}
return in1;
}
template<typename T>
T rsMax(T in1, T in2)
{
if (in1 < in2) {
return in2;
}
return in1;
}
template<typename T>
T rsFindHighBit(T val)
{
uint32_t bit = 0;
while(val > 1) {
bit++;
val>>=1;
}
return bit;
}
template<typename T>
bool rsIsPow2(T val)
{
return (val & (val-1)) == 0;
}
template<typename T>
T rsHigherPow2(T v)
{
if (rsIsPow2(v)) {
return v;
}
return 1 << (rsFindHighBit(v) + 1);
}
template<typename T>
T rsLowerPow2(T v)
{
if (rsIsPow2(v)) {
return v;
}
return 1 << rsFindHighBit(v);
}
static inline uint16_t rs888to565(uint32_t r, uint32_t g, uint32_t b)
{
uint16_t t = 0;
t |= b >> 3;
t |= (g >> 2) << 5;
t |= (r >> 3) << 11;
return t;
}
static inline uint16_t rsBoxFilter565(uint16_t i1, uint16_t i2, uint16_t i3, uint16_t i4)
{
uint32_t r = ((i1 & 0x1f) + (i2 & 0x1f) + (i3 & 0x1f) + (i4 & 0x1f));
uint32_t g = ((i1 >> 5) & 0x3f) + ((i2 >> 5) & 0x3f) + ((i3 >> 5) & 0x3f) + ((i4 >> 5) & 0x3f);
uint32_t b = ((i1 >> 11) + (i2 >> 11) + (i3 >> 11) + (i4 >> 11));
return (r >> 2) | ((g >> 2) << 5) | ((b >> 2) << 11);
}
static inline uint32_t rsBoxFilter8888(uint32_t i1, uint32_t i2, uint32_t i3, uint32_t i4)
{
uint32_t r = (i1 & 0xff) + (i2 & 0xff) + (i3 & 0xff) + (i4 & 0xff);
uint32_t g = ((i1 >> 8) & 0xff) + ((i2 >> 8) & 0xff) + ((i3 >> 8) & 0xff) + ((i4 >> 8) & 0xff);
uint32_t b = ((i1 >> 16) & 0xff) + ((i2 >> 16) & 0xff) + ((i3 >> 16) & 0xff) + ((i4 >> 16) & 0xff);
uint32_t a = ((i1 >> 24) & 0xff) + ((i2 >> 24) & 0xff) + ((i3 >> 24) & 0xff) + ((i4 >> 24) & 0xff);
return (r >> 2) | ((g >> 2) << 8) | ((b >> 2) << 16) | ((a >> 2) << 24);
}
}
}
#endif //ANDROID_RS_OBJECT_BASE_H
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