134 lines
4.2 KiB
C
134 lines
4.2 KiB
C
/******************************************************************************
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*
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* Copyright (C) 2018 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at:
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*
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*****************************************************************************
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* Originally developed and contributed by Ittiam Systems Pvt. Ltd, Bangalore
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*/
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/*!
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******************************************************************************
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* \file hme_common_utils.h
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*
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* \brief
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* Common utility functions used by ME
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*
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* \date
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* 18/09/2012
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*
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* \author
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* Ittiam
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*
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******************************************************************************
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*/
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#ifndef _HME_COMMON_UTILS_H_
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#define _HME_COMMON_UTILS_H_
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#include "ihevc_platform_macros.h"
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/*****************************************************************************/
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/* Macros */
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/*****************************************************************************/
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#define MEDIAN4(a, b, c, d, e) (median4_##e(a, b, c, d))
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/*****************************************************************************/
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/* Functions */
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/*****************************************************************************/
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/**
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********************************************************************************
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* @fn S32 median4_s16(S16 i2_n1, S16 i2_n2, S16 i2_n3, S16 i2_n4);
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*
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* @brief Returns median4 of 4 16 bits signed nubers
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*
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* @param[in] i2_n1 : first number
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*
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* @param[in] i2_n2 : 2nd number
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*
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* @param[in] i2_n3 : 3rd number
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*
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* @param[in] i2_n4 : 4th number (order does not matter)
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*
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* @return range of the number
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********************************************************************************
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*/
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S16 median4_s16(S16 i2_n1, S16 i2_n2, S16 i2_n3, S16 i2_n4);
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/**
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********************************************************************************
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* @fn S32 hme_get_range(U32 u4_num);
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*
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* @brief Returns the range of the number
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*
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* @param[in] u4_num : number whose range is to be found
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*
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* @return range of the number
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********************************************************************************
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*/
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static INLINE S32 hme_get_range(U32 u4_num)
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{
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S32 r;
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GETRANGE(r, u4_num);
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return (r);
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}
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/**
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********************************************************************************
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* @fn S32 hme_compute_2d_sum_unsigned(void *pv_inp,
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* S32 i4_blk_wd,
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* S32 i4_blk_ht,
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* S32 i4_stride,
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* S32 i4_datatype)
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*
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* @brief Computes and returns 2D sum of a unsigned 2d buffer, with datatype
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* equal to 8/16/32 bit.
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*
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* @param[in] pv_inp : input pointer
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*
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* @param[in] i4_blk_wd : block width
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*
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* @param[in] i4_blk_ht : block ht
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*
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* @param[in] i4_stride : stride
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*
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* @param[in] i4_datatype : datatype 1 - 8 bit, 2 - 16 bit, 4 - 32 bit
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*
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* @return sum of i4_blk_wd * i4_blk_ht number of entries starting at pv_inp
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********************************************************************************
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*/
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U32 hme_compute_2d_sum_unsigned(
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void *pv_inp, S32 i4_blk_wd, S32 i4_blk_ht, S32 i4_stride, S32 i4_datatype);
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/**
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********************************************************************************
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* @fn S32 get_rand_num(S32 low, S32 high)
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*
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* @brief returns a radom integer in the closed interval [low, high - 1]
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*
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* @param[in] low : lower limit
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*
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* @param[in] high : higher limit
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*
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* @return S32 result: the random number
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********************************************************************************
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*/
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S32 get_rand_num(S32 low, S32 high);
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#endif /* #ifndef _HME_COMMON_UTILS_H_ */
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