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/******************************************************************************
*
* Copyright (C) 2018 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.
*
*****************************************************************************
* Originally developed and contributed by Ittiam Systems Pvt. Ltd, Bangalore
*/
/*****************************************************************************/
/* File Includes */
/*****************************************************************************/
/* System include files */
#include <stdio.h>
#include <assert.h>
#include <stdlib.h>
#include <math.h>
#include <time.h>
/* User include files */
#include "ihevc_typedefs.h"
#include "ihevc_macros.h"
#include "ihevc_debug.h"
#include "ihevc_platform_macros.h"
#include "hme_datatype.h"
#include "hme_common_defs.h"
/*****************************************************************************/
/* Function Definitions */
/*****************************************************************************/
/**
********************************************************************************
* @fn S16 median4_s16(S16 i2_n1, S16 i2_n2, S16 i2_n3, S16 i2_n4);
*
* @brief Returns median4 of 4 16 bits signed nubers
*
* @param[in] i2_n1 : first number
*
* @param[in] i2_n2 : 2nd number
*
* @param[in] i2_n3 : 3rd number
*
* @param[in] i2_n4 : 4th number (order does not matter)
*
* @return range of the number
********************************************************************************
*/
S16 median4_s16(S16 i2_n1, S16 i2_n2, S16 i2_n3, S16 i2_n4)
{
S16 i2_max, i2_min;
i2_max = MAX(i2_n1, i2_n2);
i2_max = MAX(i2_max, i2_n3);
i2_max = MAX(i2_max, i2_n4);
i2_min = MIN(i2_n1, i2_n2);
i2_min = MIN(i2_min, i2_n3);
i2_min = MIN(i2_min, i2_n4);
return ((S16)((i2_n1 + i2_n2 + i2_n3 + i2_n4 - i2_max - i2_min) >> 1));
}
U32 hme_compute_2d_sum_u08(U08 *pu1_inp, S32 i4_wd, S32 i4_ht, S32 i4_stride)
{
S32 i, j;
U32 u4_sum = 0;
for(i = 0; i < i4_ht; i++)
{
for(j = 0; j < i4_wd; j++)
u4_sum += (U32)pu1_inp[j];
pu1_inp += i4_stride;
}
return (u4_sum);
}
U32 hme_compute_2d_sum_u16(U16 *pu2_inp, S32 i4_wd, S32 i4_ht, S32 i4_stride)
{
S32 i, j;
U32 u4_sum = 0;
for(i = 0; i < i4_ht; i++)
{
for(j = 0; j < i4_wd; j++)
u4_sum += (U32)pu2_inp[j];
pu2_inp += i4_stride;
}
return (u4_sum);
}
U32 hme_compute_2d_sum_u32(U32 *pu4_inp, S32 i4_wd, S32 i4_ht, S32 i4_stride)
{
S32 i, j;
U32 u4_sum = 0;
for(i = 0; i < i4_ht; i++)
{
for(j = 0; j < i4_wd; j++)
u4_sum += (U32)pu4_inp[j];
pu4_inp += i4_stride;
}
return (u4_sum);
}
/**
********************************************************************************
* @fn S32 hme_compute_2d_sum_unsigned(void *pv_inp,
* S32 i4_blk_wd,
* S32 i4_blk_ht,
* S32 i4_stride,
* S32 i4_datatype)
*
* @brief Computes and returns 2D sum of a unsigned 2d buffer, with datatype
* equal to 8/16/32 bit.
*
* @param[in] pv_inp : input pointer
*
* @param[in] i4_blk_wd : block width
*
* @param[in] i4_blk_ht : block ht
*
* @param[in] i4_stride : stride
*
* @param[in] i4_datatype : datatype 1 - 8 bit, 2 - 16 bit, 4 - 32 bit
*
* @return sum of i4_blk_wd * i4_blk_ht number of entries starting at pv_inp
********************************************************************************
*/
U32 hme_compute_2d_sum_unsigned(
void *pv_inp, S32 i4_blk_wd, S32 i4_blk_ht, S32 i4_stride, S32 i4_datatype)
{
if(i4_datatype == sizeof(U08))
return (hme_compute_2d_sum_u08((U08 *)pv_inp, i4_blk_wd, i4_blk_ht, i4_stride));
else if(i4_datatype == sizeof(U16))
return (hme_compute_2d_sum_u16((U16 *)pv_inp, i4_blk_wd, i4_blk_ht, i4_stride));
else if(i4_datatype == sizeof(U32))
return (hme_compute_2d_sum_u32((U32 *)pv_inp, i4_blk_wd, i4_blk_ht, i4_stride));
else
ASSERT(0);
return 0;
}
/**
********************************************************************************
* @fn S32 get_rand_num(S32 low, S32 high)
*
* @brief returns a radom integer in the closed interval [low, high - 1]
*
* @param[in] low : lower limit
*
* @param[in] high : higher limit
*
* @return S32 result: the random number
********************************************************************************
*/
S32 get_rand_num(S32 low, S32 high)
{
double num;
S32 result;
num = (double)rand() / (double)RAND_MAX;
num = num * (high - low) + low;
result = (S32)floor((num + 0.5));
if(result < low)
result = low;
if(result >= high)
result = high - 1;
return (result);
}
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