/******************************************************************************
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*
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* Copyright (C) 2012 Ittiam Systems Pvt Ltd, Bangalore
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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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/**
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*******************************************************************************
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* @file
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* ihevc_inter_pred_filters.c
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*
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* @brief
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* Contains function definitions for inter prediction interpolation filters
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*
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*
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* @author
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* Srinivas T
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*
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* @par List of Functions:
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* - ihevc_inter_pred_luma_copy()
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* - ihevc_inter_pred_luma_horz()
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* - ihevc_inter_pred_luma_vert()
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* - ihevc_inter_pred_luma_copy_w16out()
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* - ihevc_inter_pred_luma_horz_w16out()
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* - ihevc_inter_pred_luma_vert_w16out()
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* - ihevc_inter_pred_luma_vert_w16inp()
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* - ihevc_inter_pred_luma_vert_w16inp_w16out()
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* - ihevc_inter_pred_chroma_copy()
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* - ihevc_inter_pred_chroma_horz()
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* - ihevc_inter_pred_chroma_vert()
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* - ihevc_inter_pred_chroma_copy_w16out()
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* - ihevc_inter_pred_chroma_horz_w16out()
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* - ihevc_inter_pred_chroma_vert_w16out()
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* - ihevc_inter_pred_chroma_vert_w16inp()
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* - ihevc_inter_pred_chroma_vert_w16inp_w16out()
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*
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* @remarks
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* None
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*
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*******************************************************************************
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*/
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/*****************************************************************************/
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/* File Includes */
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/*****************************************************************************/
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#include "ihevc_typedefs.h"
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#include "ihevc_defs.h"
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#include "ihevc_macros.h"
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#include "ihevc_platform_macros.h"
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#include "ihevc_func_selector.h"
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#include "ihevc_inter_pred.h"
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/*****************************************************************************/
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/* Function Definitions */
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/*****************************************************************************/
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/**
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*******************************************************************************
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*
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* @brief
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* Interprediction luma function for copy
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*
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* @par Description:
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* Copies the array of width 'wd' and height 'ht' from the location pointed
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* by 'src' to the location pointed by 'dst'
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*
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* @param[in] pu1_src
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* UWORD8 pointer to the source
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*
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* @param[out] pu1_dst
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* UWORD8 pointer to the destination
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*
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* @param[in] src_strd
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* integer source stride
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*
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* @param[in] dst_strd
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* integer destination stride
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*
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* @param[in] pi1_coeff
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* WORD8 pointer to the filter coefficients
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*
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* @param[in] ht
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* integer height of the array
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*
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* @param[in] wd
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* integer width of the array
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*
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* @returns
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*
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* @remarks
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* None
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*
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*******************************************************************************
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*/
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|
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void ihevc_inter_pred_luma_copy(UWORD8 *pu1_src,
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UWORD8 *pu1_dst,
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WORD32 src_strd,
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WORD32 dst_strd,
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WORD8 *pi1_coeff,
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WORD32 ht,
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WORD32 wd)
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{
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WORD32 row, col;
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UNUSED(pi1_coeff);
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for(row = 0; row < ht; row++)
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{
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for(col = 0; col < wd; col++)
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{
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pu1_dst[col] = pu1_src[col];
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}
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pu1_src += src_strd;
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pu1_dst += dst_strd;
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}
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}
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/**
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*******************************************************************************
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*
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* @brief
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* Interprediction luma filter for horizontal input
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*
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* @par Description:
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* Applies a horizontal filter with coefficients pointed to by 'pi1_coeff'
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* to the elements pointed by 'pu1_src' and writes to the location pointed
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* by 'pu1_dst' The output is downshifted by 6 and clipped to 8 bits
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*
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* @param[in] pu1_src
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* UWORD8 pointer to the source
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*
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* @param[out] pu1_dst
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* UWORD8 pointer to the destination
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*
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* @param[in] src_strd
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* integer source stride
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*
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* @param[in] dst_strd
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* integer destination stride
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*
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* @param[in] pi1_coeff
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* WORD8 pointer to the filter coefficients
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*
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* @param[in] ht
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* integer height of the array
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*
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* @param[in] wd
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* integer width of the array
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*
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* @returns
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*
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* @remarks
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* None
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*
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*******************************************************************************
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*/
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void ihevc_inter_pred_luma_horz(UWORD8 *pu1_src,
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UWORD8 *pu1_dst,
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WORD32 src_strd,
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WORD32 dst_strd,
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WORD8 *pi1_coeff,
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WORD32 ht,
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WORD32 wd)
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{
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WORD32 row, col, i;
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WORD16 i2_tmp;
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for(row = 0; row < ht; row++)
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{
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for(col = 0; col < wd; col++)
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{
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i2_tmp = 0;
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for(i = 0; i < NTAPS_LUMA; i++)
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i2_tmp += pi1_coeff[i] * pu1_src[col + (i - 3)];
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i2_tmp = (i2_tmp + OFFSET_14_MINUS_BIT_DEPTH) >> SHIFT_14_MINUS_BIT_DEPTH;
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i2_tmp = CLIP_U8(i2_tmp);
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pu1_dst[col] = (UWORD8)i2_tmp;
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}
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pu1_src += src_strd;
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pu1_dst += dst_strd;
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}
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}
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/**
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*******************************************************************************
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*
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* @brief
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* Interprediction luma filter for vertical input
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*
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* @par Description:
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* Applies a vertcal filter with coefficients pointed to by 'pi1_coeff' to
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* the elements pointed by 'pu1_src' and writes to the location pointed by
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* 'pu1_dst' The output is downshifted by 6 and clipped to 8 bits
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*
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* @param[in] pu1_src
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* UWORD8 pointer to the source
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*
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* @param[out] pu1_dst
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* UWORD8 pointer to the destination
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*
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* @param[in] src_strd
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* integer source stride
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*
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* @param[in] dst_strd
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* integer destination stride
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*
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* @param[in] pi1_coeff
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* WORD8 pointer to the filter coefficients
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*
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* @param[in] ht
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* integer height of the array
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*
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* @param[in] wd
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* integer width of the array
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*
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* @returns
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*
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* @remarks
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* None
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*
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*******************************************************************************
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*/
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void ihevc_inter_pred_luma_vert(UWORD8 *pu1_src,
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UWORD8 *pu1_dst,
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WORD32 src_strd,
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WORD32 dst_strd,
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WORD8 *pi1_coeff,
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WORD32 ht,
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WORD32 wd)
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{
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WORD32 row, col, i;
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WORD16 i2_tmp;
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for(row = 0; row < ht; row++)
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{
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for(col = 0; col < wd; col++)
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{
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i2_tmp = 0;
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for(i = 0; i < NTAPS_LUMA; i++)
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i2_tmp += pi1_coeff[i] * pu1_src[col + (i - 3) * src_strd];
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i2_tmp = (i2_tmp + OFFSET_14_MINUS_BIT_DEPTH) >> SHIFT_14_MINUS_BIT_DEPTH;
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i2_tmp = CLIP_U8(i2_tmp);
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pu1_dst[col] = (UWORD8)i2_tmp;
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}
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pu1_src += src_strd;
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pu1_dst += dst_strd;
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}
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}
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/**
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*******************************************************************************
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*
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* @brief
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* Interprediction luma filter for copy 16bit output
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*
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* @par Description:
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* Copies the array of width 'wd' and height 'ht' from the location pointed
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* by 'src' to the location pointed by 'dst' The output is upshifted by 6
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* bits and is used as input for vertical filtering or weighted prediction
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*
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* @param[in] pu1_src
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* UWORD8 pointer to the source
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*
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* @param[out] pi2_dst
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* WORD16 pointer to the destination
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*
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* @param[in] src_strd
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* integer source stride
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*
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* @param[in] dst_strd
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* integer destination stride
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*
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* @param[in] pi1_coeff
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* WORD8 pointer to the filter coefficients
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*
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* @param[in] ht
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* integer height of the array
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*
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* @param[in] wd
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* integer width of the array
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*
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* @returns
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*
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* @remarks
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* None
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*
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*******************************************************************************
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*/
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void ihevc_inter_pred_luma_copy_w16out(UWORD8 *pu1_src,
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WORD16 *pi2_dst,
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WORD32 src_strd,
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WORD32 dst_strd,
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WORD8 *pi1_coeff,
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WORD32 ht,
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WORD32 wd)
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{
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WORD32 row, col;
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UNUSED(pi1_coeff);
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for(row = 0; row < ht; row++)
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{
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for(col = 0; col < wd; col++)
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{
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pi2_dst[col] = (pu1_src[col] << SHIFT_14_MINUS_BIT_DEPTH);
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}
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pu1_src += src_strd;
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pi2_dst += dst_strd;
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}
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}
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/**
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*******************************************************************************
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*
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* @brief
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* Interprediction luma filter for horizontal 16bit output
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*
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* @par Description:
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* Applies a horizontal filter with coefficients pointed to by 'pi1_coeff'
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* to the elements pointed by 'pu1_src' and writes to the location pointed
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* by 'pu1_dst' No downshifting or clipping is done and the output is used
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* as an input for vertical filtering or weighted prediction
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*
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* @param[in] pu1_src
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* UWORD8 pointer to the source
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*
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* @param[out] pi2_dst
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* WORD16 pointer to the destination
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*
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* @param[in] src_strd
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* integer source stride
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*
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* @param[in] dst_strd
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* integer destination stride
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*
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* @param[in] pi1_coeff
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* WORD8 pointer to the filter coefficients
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*
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* @param[in] ht
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* integer height of the array
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*
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* @param[in] wd
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* integer width of the array
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*
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* @returns
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*
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* @remarks
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* None
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*
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*******************************************************************************
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*/
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|
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void ihevc_inter_pred_luma_horz_w16out(UWORD8 *pu1_src,
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WORD16 *pi2_dst,
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WORD32 src_strd,
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WORD32 dst_strd,
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WORD8 *pi1_coeff,
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WORD32 ht,
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WORD32 wd)
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{
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WORD32 row, col, i;
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WORD16 i2_tmp;
|
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for(row = 0; row < ht; row++)
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{
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for(col = 0; col < wd; col++)
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{
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i2_tmp = 0;
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for(i = 0; i < NTAPS_LUMA; i++)
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i2_tmp += pi1_coeff[i] * pu1_src[col + (i - 3)];
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|
pi2_dst[col] = i2_tmp;
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}
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pu1_src += src_strd;
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pi2_dst += dst_strd;
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}
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}
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|
|
/**
|
*******************************************************************************
|
*
|
* @brief
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* Interprediction luma filter for vertical 16bit output
|
*
|
* @par Description:
|
* Applies a vertical filter with coefficients pointed to by 'pi1_coeff' to
|
* the elements pointed by 'pu1_src' and writes to the location pointed by
|
* 'pu1_dst' No downshifting or clipping is done and the output is used as
|
* an input for weighted prediction
|
*
|
* @param[in] pu1_src
|
* UWORD8 pointer to the source
|
*
|
* @param[out] pi2_dst
|
* WORD16 pointer to the destination
|
*
|
* @param[in] src_strd
|
* integer source stride
|
*
|
* @param[in] dst_strd
|
* integer destination stride
|
*
|
* @param[in] pi1_coeff
|
* WORD8 pointer to the filter coefficients
|
*
|
* @param[in] ht
|
* integer height of the array
|
*
|
* @param[in] wd
|
* integer width of the array
|
*
|
* @returns
|
*
|
* @remarks
|
* None
|
*
|
*******************************************************************************
|
*/
|
|
|
void ihevc_inter_pred_luma_vert_w16out(UWORD8 *pu1_src,
|
WORD16 *pi2_dst,
|
WORD32 src_strd,
|
WORD32 dst_strd,
|
WORD8 *pi1_coeff,
|
WORD32 ht,
|
WORD32 wd)
|
{
|
WORD32 row, col, i;
|
WORD16 i2_tmp;
|
|
for(row = 0; row < ht; row++)
|
{
|
for(col = 0; col < wd; col++)
|
{
|
i2_tmp = 0;
|
for(i = 0; i < NTAPS_LUMA; i++)
|
i2_tmp += pi1_coeff[i] * pu1_src[col + (i - 3) * src_strd];
|
|
pi2_dst[col] = i2_tmp;
|
}
|
|
pu1_src += src_strd;
|
pi2_dst += dst_strd;
|
}
|
|
}
|
|
/**
|
*******************************************************************************
|
*
|
* @brief
|
*
|
* Luma vertical filter for 16bit input.
|
*
|
* @par Description:
|
* Applies a vertical filter with coefficients pointed to by 'pi1_coeff' to
|
* the elements pointed by 'pu1_src' and writes to the location pointed by
|
* 'pu1_dst' Input is 16 bits The filter output is downshifted by 12 and
|
* clipped to lie between 0 and 255
|
*
|
* @param[in] pi2_src
|
* WORD16 pointer to the source
|
*
|
* @param[out] pu1_dst
|
* UWORD8 pointer to the destination
|
*
|
* @param[in] src_strd
|
* integer source stride
|
*
|
* @param[in] dst_strd
|
* integer destination stride
|
*
|
* @param[in] pi1_coeff
|
* WORD8 pointer to the filter coefficients
|
*
|
* @param[in] ht
|
* integer height of the array
|
*
|
* @param[in] wd
|
* integer width of the array
|
*
|
* @returns
|
*
|
* @remarks
|
* None
|
*
|
*******************************************************************************
|
*/
|
|
void ihevc_inter_pred_luma_vert_w16inp(WORD16 *pi2_src,
|
UWORD8 *pu1_dst,
|
WORD32 src_strd,
|
WORD32 dst_strd,
|
WORD8 *pi1_coeff,
|
WORD32 ht,
|
WORD32 wd)
|
{
|
WORD32 row, col, i;
|
WORD32 i4_tmp;
|
|
for(row = 0; row < ht; row++)
|
{
|
for(col = 0; col < wd; col++)
|
{
|
i4_tmp = 0;
|
for(i = 0; i < NTAPS_LUMA; i++)
|
i4_tmp += pi1_coeff[i] * pi2_src[col + (i - 3) * src_strd];
|
|
i4_tmp = ((i4_tmp >> SHIFT_14_MINUS_BIT_DEPTH) + OFFSET_14_MINUS_BIT_DEPTH) >> SHIFT_14_MINUS_BIT_DEPTH;
|
i4_tmp = CLIP_U8(i4_tmp);
|
|
pu1_dst[col] = i4_tmp;
|
}
|
|
pi2_src += src_strd;
|
pu1_dst += dst_strd;
|
}
|
|
}
|
|
|
/**
|
*******************************************************************************
|
*
|
* @brief
|
* Luma prediction filter for vertical 16bit input & output
|
*
|
* @par Description:
|
* Applies a vertical filter with coefficients pointed to by 'pi1_coeff' to
|
* the elements pointed by 'pu1_src' and writes to the location pointed by
|
* 'pu1_dst' Input is 16 bits The filter output is downshifted by 6 and
|
* 8192 is subtracted to store it as a 16 bit number The output is used as
|
* a input to weighted prediction
|
*
|
* @param[in] pi2_src
|
* WORD16 pointer to the source
|
*
|
* @param[out] pi2_dst
|
* WORD16 pointer to the destination
|
*
|
* @param[in] src_strd
|
* integer source stride
|
*
|
* @param[in] dst_strd
|
* integer destination stride
|
*
|
* @param[in] pi1_coeff
|
* WORD8 pointer to the filter coefficients
|
*
|
* @param[in] ht
|
* integer height of the array
|
*
|
* @param[in] wd
|
* integer width of the array
|
*
|
* @returns
|
*
|
* @remarks
|
* None
|
*
|
*******************************************************************************
|
*/
|
|
|
void ihevc_inter_pred_luma_vert_w16inp_w16out(WORD16 *pi2_src,
|
WORD16 *pi2_dst,
|
WORD32 src_strd,
|
WORD32 dst_strd,
|
WORD8 *pi1_coeff,
|
WORD32 ht,
|
WORD32 wd)
|
{
|
WORD32 row, col, i;
|
WORD32 i4_tmp;
|
|
for(row = 0; row < ht; row++)
|
{
|
for(col = 0; col < wd; col++)
|
{
|
i4_tmp = 0;
|
for(i = 0; i < NTAPS_LUMA; i++)
|
i4_tmp += pi1_coeff[i] * pi2_src[col + (i - 3) * src_strd];
|
|
i4_tmp = (i4_tmp >> SHIFT_14_MINUS_BIT_DEPTH) - OFFSET14;
|
|
pi2_dst[col] = i4_tmp;
|
}
|
|
pi2_src += src_strd;
|
pi2_dst += dst_strd;
|
}
|
|
}
|
|
|
|
/**
|
*******************************************************************************
|
*
|
* @brief
|
* Chroma interprediction filter for copy
|
*
|
* @par Description:
|
* Copies the array of width 'wd' and height 'ht' from the location pointed
|
* by 'src' to the location pointed by 'dst'
|
*
|
* @param[in] pu1_src
|
* UWORD8 pointer to the source
|
*
|
* @param[out] pu1_dst
|
* UWORD8 pointer to the destination
|
*
|
* @param[in] src_strd
|
* integer source stride
|
*
|
* @param[in] dst_strd
|
* integer destination stride
|
*
|
* @param[in] pi1_coeff
|
* WORD8 pointer to the filter coefficients
|
*
|
* @param[in] ht
|
* integer height of the array
|
*
|
* @param[in] wd
|
* integer width of the array
|
*
|
* @returns
|
*
|
* @remarks
|
* None
|
*
|
*******************************************************************************
|
*/
|
|
|
void ihevc_inter_pred_chroma_copy(UWORD8 *pu1_src,
|
UWORD8 *pu1_dst,
|
WORD32 src_strd,
|
WORD32 dst_strd,
|
WORD8 *pi1_coeff,
|
WORD32 ht,
|
WORD32 wd)
|
{
|
WORD32 row, col;
|
UNUSED(pi1_coeff);
|
for(row = 0; row < ht; row++)
|
{
|
for(col = 0; col < 2 * wd; col++)
|
{
|
pu1_dst[col] = pu1_src[col];
|
}
|
|
pu1_src += src_strd;
|
pu1_dst += dst_strd;
|
}
|
}
|
|
|
|
/**
|
*******************************************************************************
|
*
|
* @brief
|
* Chroma interprediction filter for horizontal input
|
*
|
* @par Description:
|
* Applies a horizontal filter with coefficients pointed to by 'pi1_coeff'
|
* to the elements pointed by 'pu1_src' and writes to the location pointed
|
* by 'pu1_dst' The output is downshifted by 6 and clipped to 8 bits
|
*
|
* @param[in] pu1_src
|
* UWORD8 pointer to the source
|
*
|
* @param[out] pu1_dst
|
* UWORD8 pointer to the destination
|
*
|
* @param[in] src_strd
|
* integer source stride
|
*
|
* @param[in] dst_strd
|
* integer destination stride
|
*
|
* @param[in] pi1_coeff
|
* WORD8 pointer to the filter coefficients
|
*
|
* @param[in] ht
|
* integer height of the array
|
*
|
* @param[in] wd
|
* integer width of the array
|
*
|
* @returns
|
*
|
* @remarks
|
* None
|
*
|
*******************************************************************************
|
*/
|
|
|
void ihevc_inter_pred_chroma_horz(UWORD8 *pu1_src,
|
UWORD8 *pu1_dst,
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WORD32 src_strd,
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WORD32 dst_strd,
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WORD8 *pi1_coeff,
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WORD32 ht,
|
WORD32 wd)
|
{
|
WORD32 row, col, i;
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WORD16 i2_tmp_u, i2_tmp_v;
|
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for(row = 0; row < ht; row++)
|
{
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for(col = 0; col < 2 * wd; col += 2)
|
{
|
i2_tmp_u = 0;
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i2_tmp_v = 0;
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for(i = 0; i < NTAPS_CHROMA; i++)
|
{
|
i2_tmp_u += pi1_coeff[i] * pu1_src[col + (i - 1) * 2];
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i2_tmp_v += pi1_coeff[i] * pu1_src[col + 1 + (i - 1) * 2];
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}
|
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i2_tmp_u = (i2_tmp_u + OFFSET_14_MINUS_BIT_DEPTH) >> SHIFT_14_MINUS_BIT_DEPTH;
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i2_tmp_u = CLIP_U8(i2_tmp_u);
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i2_tmp_v = (i2_tmp_v + OFFSET_14_MINUS_BIT_DEPTH) >> SHIFT_14_MINUS_BIT_DEPTH;
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i2_tmp_v = CLIP_U8(i2_tmp_v);
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|
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pu1_dst[col] = (UWORD8)i2_tmp_u;
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pu1_dst[col + 1] = (UWORD8)i2_tmp_v;
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}
|
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pu1_src += src_strd;
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pu1_dst += dst_strd;
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}
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}
|
|
|
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/**
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*******************************************************************************
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*
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* @brief
|
* Chroma interprediction filter for vertical input
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*
|
* @par Description:
|
* Applies a vertcal filter with coefficients pointed to by 'pi1_coeff' to
|
* the elements pointed by 'pu1_src' and writes to the location pointed by
|
* 'pu1_dst' The output is downshifted by 6 and clipped to 8 bits
|
*
|
*
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* @param[in] pu1_src
|
* UWORD8 pointer to the source
|
*
|
* @param[out] pu1_dst
|
* UWORD8 pointer to the destination
|
*
|
* @param[in] src_strd
|
* integer source stride
|
*
|
* @param[in] dst_strd
|
* integer destination stride
|
*
|
* @param[in] pi1_coeff
|
* WORD8 pointer to the filter coefficients
|
*
|
* @param[in] ht
|
* integer height of the array
|
*
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* @param[in] wd
|
* integer width of the array
|
*
|
* @returns
|
*
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* @remarks
|
* None
|
*
|
*******************************************************************************
|
*/
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|
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void ihevc_inter_pred_chroma_vert(UWORD8 *pu1_src,
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UWORD8 *pu1_dst,
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WORD32 src_strd,
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WORD32 dst_strd,
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WORD8 *pi1_coeff,
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WORD32 ht,
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WORD32 wd)
|
{
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WORD32 row, col, i;
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WORD16 i2_tmp;
|
|
for(row = 0; row < ht; row++)
|
{
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for(col = 0; col < 2 * wd; col++)
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{
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i2_tmp = 0;
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for(i = 0; i < NTAPS_CHROMA; i++)
|
{
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i2_tmp += pi1_coeff[i] * pu1_src[col + (i - 1) * src_strd];
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}
|
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i2_tmp = (i2_tmp + OFFSET_14_MINUS_BIT_DEPTH) >> SHIFT_14_MINUS_BIT_DEPTH;
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i2_tmp = CLIP_U8(i2_tmp);
|
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pu1_dst[col] = (UWORD8)i2_tmp;
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}
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pu1_src += src_strd;
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pu1_dst += dst_strd;
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}
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}
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|
|
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/**
|
*******************************************************************************
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*
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* @brief
|
* chroma interprediction filter for copying 16bit output
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*
|
* @par Description:
|
* Copies the array of width 'wd' and height 'ht' from the location pointed
|
* by 'src' to the location pointed by 'dst' The output is upshifted by 6
|
* bits and is used as input for vertical filtering or weighted prediction
|
*
|
* @param[in] pu1_src
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* UWORD8 pointer to the source
|
*
|
* @param[out] pi2_dst
|
* WORD16 pointer to the destination
|
*
|
* @param[in] src_strd
|
* integer source stride
|
*
|
* @param[in] dst_strd
|
* integer destination stride
|
*
|
* @param[in] pi1_coeff
|
* WORD8 pointer to the filter coefficients
|
*
|
* @param[in] ht
|
* integer height of the array
|
*
|
* @param[in] wd
|
* integer width of the array
|
*
|
* @returns
|
*
|
* @remarks
|
* None
|
*
|
*******************************************************************************
|
*/
|
|
|
void ihevc_inter_pred_chroma_copy_w16out(UWORD8 *pu1_src,
|
WORD16 *pi2_dst,
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WORD32 src_strd,
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WORD32 dst_strd,
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WORD8 *pi1_coeff,
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WORD32 ht,
|
WORD32 wd)
|
{
|
WORD32 row, col;
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UNUSED(pi1_coeff);
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for(row = 0; row < ht; row++)
|
{
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for(col = 0; col < 2 * wd; col++)
|
{
|
pi2_dst[col] = (pu1_src[col] << SHIFT_14_MINUS_BIT_DEPTH);
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}
|
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pu1_src += src_strd;
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pi2_dst += dst_strd;
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}
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}
|
|
|
|
/**
|
*******************************************************************************
|
*
|
* @brief
|
* chroma interprediction filter to store horizontal 16bit ouput
|
*
|
* @par Description:
|
* Applies a horizontal filter with coefficients pointed to by 'pi1_coeff'
|
* to the elements pointed by 'pu1_src' and writes to the location pointed
|
* by 'pu1_dst' No downshifting or clipping is done and the output is used
|
* as an input for vertical filtering or weighted prediction
|
*
|
* @param[in] pu1_src
|
* UWORD8 pointer to the source
|
*
|
* @param[out] pi2_dst
|
* WORD16 pointer to the destination
|
*
|
* @param[in] src_strd
|
* integer source stride
|
*
|
* @param[in] dst_strd
|
* integer destination stride
|
*
|
* @param[in] pi1_coeff
|
* WORD8 pointer to the filter coefficients
|
*
|
* @param[in] ht
|
* integer height of the array
|
*
|
* @param[in] wd
|
* integer width of the array
|
*
|
* @returns
|
*
|
* @remarks
|
* None
|
*
|
*******************************************************************************
|
*/
|
|
|
void ihevc_inter_pred_chroma_horz_w16out(UWORD8 *pu1_src,
|
WORD16 *pi2_dst,
|
WORD32 src_strd,
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WORD32 dst_strd,
|
WORD8 *pi1_coeff,
|
WORD32 ht,
|
WORD32 wd)
|
{
|
WORD32 row, col, i;
|
WORD16 i2_tmp_u, i2_tmp_v;
|
|
for(row = 0; row < ht; row++)
|
{
|
for(col = 0; col < 2 * wd; col += 2)
|
{
|
i2_tmp_u = 0;
|
i2_tmp_v = 0;
|
for(i = 0; i < NTAPS_CHROMA; i++)
|
{
|
i2_tmp_u += pi1_coeff[i] * pu1_src[col + (i - 1) * 2];
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i2_tmp_v += pi1_coeff[i] * pu1_src[col + 1 + (i - 1) * 2];
|
}
|
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pi2_dst[col] = i2_tmp_u;
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pi2_dst[col + 1] = i2_tmp_v;
|
}
|
|
pu1_src += src_strd;
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pi2_dst += dst_strd;
|
}
|
}
|
|
|
|
/**
|
*******************************************************************************
|
*
|
* @brief
|
* Interprediction chroma filter to store vertical 16bit ouput
|
*
|
* @par Description:
|
* Applies a vertical filter with coefficients pointed to by 'pi1_coeff' to
|
* the elements pointed by 'pu1_src' and writes to the location pointed by
|
* 'pu1_dst' No downshifting or clipping is done and the output is used as
|
* an input for weighted prediction
|
*
|
* @param[in] pu1_src
|
* UWORD8 pointer to the source
|
*
|
* @param[out] pi2_dst
|
* WORD16 pointer to the destination
|
*
|
* @param[in] src_strd
|
* integer source stride
|
*
|
* @param[in] dst_strd
|
* integer destination stride
|
*
|
* @param[in] pi1_coeff
|
* WORD8 pointer to the filter coefficients
|
*
|
* @param[in] ht
|
* integer height of the array
|
*
|
* @param[in] wd
|
* integer width of the array
|
*
|
* @returns
|
*
|
* @remarks
|
* None
|
*
|
*******************************************************************************
|
*/
|
|
|
void ihevc_inter_pred_chroma_vert_w16out(UWORD8 *pu1_src,
|
WORD16 *pi2_dst,
|
WORD32 src_strd,
|
WORD32 dst_strd,
|
WORD8 *pi1_coeff,
|
WORD32 ht,
|
WORD32 wd)
|
{
|
WORD32 row, col, i;
|
WORD16 i2_tmp;
|
|
for(row = 0; row < ht; row++)
|
{
|
for(col = 0; col < 2 * wd; col++)
|
{
|
i2_tmp = 0;
|
for(i = 0; i < NTAPS_CHROMA; i++)
|
{
|
i2_tmp += pi1_coeff[i] * pu1_src[col + (i - 1) * src_strd];
|
}
|
|
pi2_dst[col] = i2_tmp;
|
}
|
|
pu1_src += src_strd;
|
pi2_dst += dst_strd;
|
}
|
}
|
|
|
/**
|
*******************************************************************************
|
*
|
* @brief
|
* chroma interprediction filter for vertical 16bit input
|
*
|
* @par Description:
|
* Applies a vertical filter with coefficients pointed to by 'pi1_coeff' to
|
* the elements pointed by 'pu1_src' and writes to the location pointed by
|
* 'pu1_dst' Input is 16 bits The filter output is downshifted by 12 and
|
* clipped to lie between 0 and 255
|
*
|
* @param[in] pi2_src
|
* WORD16 pointer to the source
|
*
|
* @param[out] pu1_dst
|
* UWORD8 pointer to the destination
|
*
|
* @param[in] src_strd
|
* integer source stride
|
*
|
* @param[in] dst_strd
|
* integer destination stride
|
*
|
* @param[in] pi1_coeff
|
* WORD8 pointer to the filter coefficients
|
*
|
* @param[in] ht
|
* integer height of the array
|
*
|
* @param[in] wd
|
* integer width of the array
|
*
|
* @returns
|
*
|
* @remarks
|
* None
|
*
|
*******************************************************************************
|
*/
|
|
void ihevc_inter_pred_chroma_vert_w16inp(WORD16 *pi2_src,
|
UWORD8 *pu1_dst,
|
WORD32 src_strd,
|
WORD32 dst_strd,
|
WORD8 *pi1_coeff,
|
WORD32 ht,
|
WORD32 wd)
|
{
|
WORD32 row, col, i;
|
WORD32 i4_tmp;
|
|
for(row = 0; row < ht; row++)
|
{
|
for(col = 0; col < 2 * wd; col++)
|
{
|
i4_tmp = 0;
|
for(i = 0; i < NTAPS_CHROMA; i++)
|
{
|
i4_tmp += pi1_coeff[i] * pi2_src[col + (i - 1) * src_strd];
|
}
|
|
i4_tmp = ((i4_tmp >> SHIFT_14_MINUS_BIT_DEPTH) + OFFSET_14_MINUS_BIT_DEPTH) >> SHIFT_14_MINUS_BIT_DEPTH;
|
i4_tmp = CLIP_U8(i4_tmp);
|
|
pu1_dst[col] = i4_tmp;
|
}
|
|
pi2_src += src_strd;
|
pu1_dst += dst_strd;
|
}
|
|
}
|
|
|
/**
|
*******************************************************************************
|
*
|
* @brief
|
*
|
* Chroma interprediction filter for 16bit vertical input and output.
|
*
|
* @par Description:
|
* Applies a vertical filter with coefficients pointed to by 'pi1_coeff' to
|
* the elements pointed by 'pu1_src' and writes to the location pointed by
|
* 'pu1_dst' Input is 16 bits The filter output is downshifted by 6 and
|
* 8192 is subtracted to store it as a 16 bit number The output is used as
|
* a input to weighted prediction
|
*
|
* @param[in] pi2_src
|
* WORD16 pointer to the source
|
*
|
* @param[out] pi2_dst
|
* WORD16 pointer to the destination
|
*
|
* @param[in] src_strd
|
* integer source stride
|
*
|
* @param[in] dst_strd
|
* integer destination stride
|
*
|
* @param[in] pi1_coeff
|
* WORD8 pointer to the filter coefficients
|
*
|
* @param[in] ht
|
* integer height of the array
|
*
|
* @param[in] wd
|
* integer width of the array
|
*
|
* @returns
|
*
|
* @remarks
|
* None
|
*
|
*******************************************************************************
|
*/
|
|
void ihevc_inter_pred_chroma_vert_w16inp_w16out(WORD16 *pi2_src,
|
WORD16 *pi2_dst,
|
WORD32 src_strd,
|
WORD32 dst_strd,
|
WORD8 *pi1_coeff,
|
WORD32 ht,
|
WORD32 wd)
|
{
|
WORD32 row, col, i;
|
WORD32 i4_tmp;
|
|
for(row = 0; row < ht; row++)
|
{
|
for(col = 0; col < 2 * wd; col++)
|
{
|
i4_tmp = 0;
|
for(i = 0; i < NTAPS_CHROMA; i++)
|
{
|
i4_tmp += pi1_coeff[i] * pi2_src[col + (i - 1) * src_strd];
|
}
|
|
i4_tmp = (i4_tmp >> SHIFT_14_MINUS_BIT_DEPTH);
|
|
pi2_dst[col] = i4_tmp;
|
}
|
|
pi2_src += src_strd;
|
pi2_dst += dst_strd;
|
}
|
|
}
|
