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815 lines
23 KiB
C
815 lines
23 KiB
C
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/******************************************************************************
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*
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* Copyright (C) 2015 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
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* ih264_resi_trans_quant.c
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*
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* @brief
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* Contains function definitions single stage forward transform for H.264
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* It will calculate the residue, do the cf and then do quantization
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*
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* @author
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* Ittiam
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*
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* @par List of Functions:
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* - ih264_resi_trans_quant_4x4()
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* - ih264_resi_trans_quant_chroma_4x4
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* - ih264_hadamard_quant_4x4
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* - ih264_hadamard_quant_2x2_uv
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* - ih264_resi_trans_quant_8x8
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*
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* @remarks
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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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/* System include files */
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#include <stddef.h>
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/* User include files */
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#include "ih264_typedefs.h"
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#include "ih264_defs.h"
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#include "ih264_size_defs.h"
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#include "ih264_macros.h"
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#include "ih264_trans_macros.h"
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#include "ih264_trans_data.h"
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#include "ih264_structs.h"
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#include "ih264_trans_quant_itrans_iquant.h"
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/**
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*******************************************************************************
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*
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* @brief
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* This function performs forward transform and quantization on a 4*4 block
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*
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* @par Description:
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* The function accepts source buffer and estimation buffer. From these, it
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* computes the residue. This is residue is then transformed and quantized.
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* The transform and quantization are in placed computed. They use the residue
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* buffer for this.
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*
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* @param[in] pu1_src
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* Pointer to source sub-block
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*
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* @param[in] pu1_pred
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* Pointer to prediction sub-block
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*
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* @param[in] pi2_out
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* Pointer to residual sub-block
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*
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* @param[in] src_strd
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* Source stride
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*
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* @param[in] pred_strd
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* Prediction stride
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*
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* @param[in] dst_strd
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* Destination stride
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*
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* @param[in] u4_qbits
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* QP_BITS_h264_4x4 + floor(QP/6)
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*
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* @param[in] pu2_threshold_matrix
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* Pointer to Forward Quant Threshold Matrix
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*
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* @param[in] pu2_scale_matrix
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* Pointer to Forward Quant Scale Matrix
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*
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* @param[in] u4_round_factor
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* Quantization Round factor
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*
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* @param[out] pu1_nnz
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* Total non-zero coefficients in the current sub-block
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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 ih264_resi_trans_quant_4x4(UWORD8 *pu1_src,
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UWORD8 *pu1_pred,
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WORD16 *pi2_out,
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WORD32 src_strd,
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WORD32 pred_strd,
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const UWORD16 *pu2_scale_matrix,
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const UWORD16 *pu2_threshold_matrix,
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UWORD32 u4_qbits,
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UWORD32 u4_round_factor,
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UWORD8 *pu1_nnz,
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WORD16 *pi2_alt_dc_addr)
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{
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UWORD32 i;
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WORD32 x0, x1, x2, x3, x4, x5, x6, x7;
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WORD32 i4_value, i4_sign;
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UWORD32 u4_abs_value;
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WORD16 *pi2_out_tmp = pi2_out;
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UWORD32 u4_nonzero_coeff = 0;
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for (i = 0; i < SUB_BLK_WIDTH_4x4; i++)
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{
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/* computing prediction error (residue) */
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x4 = pu1_src[0] - pu1_pred[0];
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x5 = pu1_src[1] - pu1_pred[1];
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x6 = pu1_src[2] - pu1_pred[2];
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x7 = pu1_src[3] - pu1_pred[3];
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/* Horizontal transform */
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x0 = x4 + x7;
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x1 = x5 + x6;
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x2 = x5 - x6;
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x3 = x4 - x7;
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pi2_out_tmp[0] = x0 + x1;
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pi2_out_tmp[1] = (x3 <<1) + x2;
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pi2_out_tmp[2] = x0 - x1;
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pi2_out_tmp[3] = x3 - (x2<<1);
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/* pointing to next row; */
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pu1_src += src_strd;
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pu1_pred += pred_strd;
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pi2_out_tmp += 4;
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}
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pi2_out_tmp = pi2_out;
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for (i = 0; i < SUB_BLK_WIDTH_4x4; i++)
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{
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/* Vertical transform and quantization */
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x4 = pi2_out_tmp[0];
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x5 = pi2_out_tmp[4];
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x6 = pi2_out_tmp[8];
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x7 = pi2_out_tmp[12];
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x0 = x4 + x7;
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x1 = x5 + x6;
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x2 = x5 - x6;
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x3 = x4 - x7;
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/* quantization is done in place */
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i4_value = x0 + x1;
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if(i==0)
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{
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(*pi2_alt_dc_addr) = i4_value;
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}
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FWD_QUANT(i4_value, u4_abs_value, i4_sign, pu2_threshold_matrix[0], pu2_scale_matrix[0], u4_round_factor, u4_qbits, u4_nonzero_coeff);
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pi2_out_tmp[0] = i4_value;
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i4_value = (x3 << 1) + x2;
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FWD_QUANT(i4_value, u4_abs_value, i4_sign, pu2_threshold_matrix[4], pu2_scale_matrix[4], u4_round_factor, u4_qbits, u4_nonzero_coeff);
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pi2_out_tmp[4] = i4_value;
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i4_value = x0 - x1;
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FWD_QUANT(i4_value, u4_abs_value, i4_sign, pu2_threshold_matrix[8], pu2_scale_matrix[8], u4_round_factor, u4_qbits, u4_nonzero_coeff);
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pi2_out_tmp[8] = i4_value;
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i4_value = x3 - (x2 << 1);
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FWD_QUANT(i4_value, u4_abs_value, i4_sign, pu2_threshold_matrix[12], pu2_scale_matrix[12], u4_round_factor, u4_qbits, u4_nonzero_coeff);
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pi2_out_tmp[12] = i4_value;
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pi2_out_tmp ++;
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pu2_scale_matrix++;
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pu2_threshold_matrix++;
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}
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/* Return total nonzero coefficients in the current sub block */
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*pu1_nnz = u4_nonzero_coeff;
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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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* This function performs forward transform and quantization on a 4*4 chroma block
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* with interleaved values
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*
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* @par Description:
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* The function accepts source buffer and estimation buffer. From these, it
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* computes the residue. This is residue is then transformed and quantized.
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* The transform and quantization are in placed computed. They use the residue
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* buffer for this.
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*
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* @param[in] pu1_src
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* Pointer to source sub-block
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*
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* @param[in] pu1_pred
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* Pointer to prediction sub-block
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*
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* @param[in] pi2_out
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* Pointer to residual sub-block
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*
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* @param[in] src_strd
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* Source stride
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*
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* @param[in] pred_strd
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* Prediction stride
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*
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* @param[in] dst_strd
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* Destination stride
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*
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* @param[in] u4_qbits
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* QP_BITS_h264_4x4 + floor(QP/6)
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*
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* @param[in] pu2_threshold_matrix
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* Pointer to Forward Quant Threshold Matrix
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*
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* @param[in] pu2_scale_matrix
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* Pointer to Forward Quant Scale Matrix
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*
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* @param[in] u4_round_factor
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* Quantization Round factor
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*
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* @param[out] pu1_nnz
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* Total non-zero coefficients in the current sub-block
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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 ih264_resi_trans_quant_chroma_4x4(UWORD8 *pu1_src,
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UWORD8 *pu1_pred,
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WORD16 *pi2_out,
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WORD32 src_strd,
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WORD32 pred_strd,
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const UWORD16 *pu2_scale_matrix,
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const UWORD16 *pu2_threshold_matrix,
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UWORD32 u4_qbits,
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UWORD32 u4_round_factor,
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UWORD8 *pu1_nnz,
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WORD16 *pu1_dc_alt_addr)
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{
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UWORD32 i;
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WORD32 x0, x1, x2, x3, x4, x5, x6, x7;
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WORD32 i4_value, i4_sign;
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UWORD32 u4_abs_value;
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WORD16 *pi2_out_tmp = pi2_out;
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UWORD32 u4_nonzero_coeff = 0;
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for (i = 0; i < SUB_BLK_WIDTH_4x4; i++)
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{
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/* computing prediction error (residue) */
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x4 = pu1_src[0] - pu1_pred[0];
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x5 = pu1_src[2] - pu1_pred[2];
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x6 = pu1_src[4] - pu1_pred[4];
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x7 = pu1_src[6] - pu1_pred[6];
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/* Horizontal transform */
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x0 = x4 + x7;
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x1 = x5 + x6;
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x2 = x5 - x6;
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x3 = x4 - x7;
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pi2_out_tmp[0] = x0 + x1;
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pi2_out_tmp[1] = (x3 <<1) + x2;
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pi2_out_tmp[2] = x0 - x1;
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pi2_out_tmp[3] = x3 - (x2<<1);
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/* pointing to next row; */
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pu1_src += src_strd;
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pu1_pred += pred_strd;
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pi2_out_tmp += 4;
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}
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pi2_out_tmp = pi2_out;
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for (i = 0; i < SUB_BLK_WIDTH_4x4; i++)
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{
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/* Vertical transform and quantization */
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x4 = pi2_out_tmp[0];
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x5 = pi2_out_tmp[4];
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x6 = pi2_out_tmp[8];
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x7 = pi2_out_tmp[12];
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x0 = x4 + x7;
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x1 = x5 + x6;
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x2 = x5 - x6;
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x3 = x4 - x7;
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/* quantization is done in place */
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i4_value = x0 + x1;
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if(i==0)
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{
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*pu1_dc_alt_addr = i4_value;
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}
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FWD_QUANT(i4_value, u4_abs_value, i4_sign, pu2_threshold_matrix[0],
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pu2_scale_matrix[0], u4_round_factor, u4_qbits,
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u4_nonzero_coeff);
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pi2_out_tmp[0] = i4_value;
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i4_value = (x3 << 1) + x2;
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FWD_QUANT(i4_value, u4_abs_value, i4_sign, pu2_threshold_matrix[4],
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pu2_scale_matrix[4], u4_round_factor, u4_qbits,
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u4_nonzero_coeff);
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pi2_out_tmp[4] = i4_value;
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i4_value = x0 - x1;
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FWD_QUANT(i4_value, u4_abs_value, i4_sign, pu2_threshold_matrix[8],
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pu2_scale_matrix[8], u4_round_factor, u4_qbits,
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u4_nonzero_coeff);
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pi2_out_tmp[8] = i4_value;
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i4_value = x3 - (x2 << 1);
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FWD_QUANT(i4_value, u4_abs_value, i4_sign, pu2_threshold_matrix[12],
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pu2_scale_matrix[12], u4_round_factor, u4_qbits,
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u4_nonzero_coeff);
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pi2_out_tmp[12] = i4_value;
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pi2_out_tmp ++;
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pu2_scale_matrix++;
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pu2_threshold_matrix++;
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}
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/* Return total nonzero coefficients in the current sub block */
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||
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*pu1_nnz = u4_nonzero_coeff;
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|
}
|
||
|
|
||
|
/**
|
||
|
*******************************************************************************
|
||
|
*
|
||
|
* @brief
|
||
|
* This function performs forward hadamard transform and quantization on a 4*4 block
|
||
|
*
|
||
|
* @par Description:
|
||
|
* The function accepts source buffer and estimation buffer. From these, it
|
||
|
* computes the residue. This is residue is then transformed and quantized.
|
||
|
* The transform and quantization are in placed computed. They use the residue
|
||
|
* buffer for this.
|
||
|
*
|
||
|
* @param[in] pu1_src
|
||
|
* Pointer to source sub-block
|
||
|
*
|
||
|
* @param[in] pu1_pred
|
||
|
* Pointer to prediction sub-block
|
||
|
*
|
||
|
* @param[in] pi2_out
|
||
|
* Pointer to residual sub-block
|
||
|
*
|
||
|
* @param[in] src_strd
|
||
|
* Source stride
|
||
|
*
|
||
|
* @param[in] pred_strd
|
||
|
* Prediction stride
|
||
|
*
|
||
|
* @param[in] dst_strd
|
||
|
* Destination stride
|
||
|
*
|
||
|
* @param[in] u4_qbits
|
||
|
* QP_BITS_h264_4x4 + floor(QP/6)
|
||
|
*
|
||
|
* @param[in] pu2_threshold_matrix
|
||
|
* Pointer to Forward Quant Threshold Matrix
|
||
|
*
|
||
|
* @param[in] pu2_scale_matrix
|
||
|
* Pointer to Forward Quant Scale Matrix
|
||
|
*
|
||
|
* @param[in] u4_round_factor
|
||
|
* Quantization Round factor
|
||
|
*
|
||
|
* @param[out] pu1_nnz
|
||
|
* Total non-zero coefficients in the current sub-block
|
||
|
*
|
||
|
* @returns
|
||
|
*
|
||
|
* @remarks
|
||
|
* None
|
||
|
*
|
||
|
*/
|
||
|
|
||
|
void ih264_hadamard_quant_4x4(WORD16 *pi2_src,
|
||
|
WORD16 *pi2_dst,
|
||
|
const UWORD16 *pu2_scale_matrix,
|
||
|
const UWORD16 *pu2_threshold_matrix,
|
||
|
UWORD32 u4_qbits,
|
||
|
UWORD32 u4_round_factor,
|
||
|
UWORD8 *pu1_nnz)
|
||
|
{
|
||
|
WORD32 i;
|
||
|
WORD32 x0,x1,x2,x3,x4,x5,x6,x7,i4_value;
|
||
|
UWORD32 u4_abs_value;
|
||
|
WORD32 i4_sign;
|
||
|
|
||
|
*pu1_nnz = 0;
|
||
|
|
||
|
for (i = 0; i < SUB_BLK_WIDTH_4x4; i++)
|
||
|
{
|
||
|
x4 = pi2_src[0];
|
||
|
x5 = pi2_src[1];
|
||
|
x6 = pi2_src[2];
|
||
|
x7 = pi2_src[3];
|
||
|
|
||
|
x0 = x4 + x7;
|
||
|
x1 = x5 + x6;
|
||
|
x2 = x5 - x6;
|
||
|
x3 = x4 - x7;
|
||
|
|
||
|
pi2_dst[0] = x0 + x1;
|
||
|
pi2_dst[1] = x3 + x2;
|
||
|
pi2_dst[2] = x0 - x1;
|
||
|
pi2_dst[3] = x3 - x2;
|
||
|
|
||
|
pi2_src += 4;
|
||
|
pi2_dst += 4;
|
||
|
}
|
||
|
|
||
|
/* Vertical transform and quantization */
|
||
|
pi2_dst -= SUB_BLK_WIDTH_4x4<<2;
|
||
|
|
||
|
for (i = 0; i < SUB_BLK_WIDTH_4x4; i++)
|
||
|
{
|
||
|
x4 = pi2_dst[0];
|
||
|
x5 = pi2_dst[4];
|
||
|
x6 = pi2_dst[8];
|
||
|
x7 = pi2_dst[12] ;
|
||
|
|
||
|
x0 = x4 + x7;
|
||
|
x1 = x5 + x6;
|
||
|
x2 = x5 - x6;
|
||
|
x3 = x4 - x7;
|
||
|
|
||
|
|
||
|
i4_value = (x0 + x1) >> 1;
|
||
|
FWD_QUANT(i4_value, u4_abs_value, i4_sign, pu2_threshold_matrix[0],
|
||
|
pu2_scale_matrix[0], u4_round_factor, u4_qbits, pu1_nnz[0]);
|
||
|
pi2_dst[0] = i4_value;
|
||
|
|
||
|
i4_value = (x3 + x2) >> 1;
|
||
|
FWD_QUANT(i4_value, u4_abs_value, i4_sign, pu2_threshold_matrix[0],
|
||
|
pu2_scale_matrix[0], u4_round_factor, u4_qbits, pu1_nnz[0]);
|
||
|
pi2_dst[4] = i4_value;
|
||
|
|
||
|
i4_value = (x0 - x1) >> 1;
|
||
|
FWD_QUANT(i4_value, u4_abs_value, i4_sign, pu2_threshold_matrix[0],
|
||
|
pu2_scale_matrix[0], u4_round_factor, u4_qbits, pu1_nnz[0]);
|
||
|
pi2_dst[8] = i4_value;
|
||
|
|
||
|
i4_value = (x3 - x2) >> 1;
|
||
|
FWD_QUANT(i4_value, u4_abs_value, i4_sign, pu2_threshold_matrix[0],
|
||
|
pu2_scale_matrix[0], u4_round_factor, u4_qbits, pu1_nnz[0]);
|
||
|
pi2_dst[12] = i4_value;
|
||
|
|
||
|
pi2_dst ++;
|
||
|
}
|
||
|
}
|
||
|
|
||
|
/**
|
||
|
*******************************************************************************
|
||
|
*
|
||
|
* @brief
|
||
|
* This function performs forward hadamard transform and quantization on a 2*2 block
|
||
|
* for both U and V planes
|
||
|
*
|
||
|
* @par Description:
|
||
|
* The function accepts source buffer and estimation buffer. From these, it
|
||
|
* computes the residue. This is residue is then transformed and quantized.
|
||
|
* The transform and quantization are in placed computed. They use the residue
|
||
|
* buffer for this.
|
||
|
*
|
||
|
* @param[in] pu1_src
|
||
|
* Pointer to source sub-block
|
||
|
*
|
||
|
* @param[in] pu1_pred
|
||
|
* Pointer to prediction sub-block
|
||
|
*
|
||
|
* @param[in] pi2_out
|
||
|
* Pointer to residual sub-block
|
||
|
*
|
||
|
* @param[in] src_strd
|
||
|
* Source stride
|
||
|
*
|
||
|
* @param[in] pred_strd
|
||
|
* Prediction stride
|
||
|
*
|
||
|
* @param[in] dst_strd
|
||
|
* Destination stride
|
||
|
*
|
||
|
* @param[in] u4_qbits
|
||
|
* QP_BITS_h264_4x4 + floor(QP/6)
|
||
|
*
|
||
|
* @param[in] pu2_threshold_matrix
|
||
|
* Pointer to Forward Quant Threshold Matrix
|
||
|
*
|
||
|
* @param[in] pu2_scale_matrix
|
||
|
* Pointer to Forward Quant Scale Matrix
|
||
|
*
|
||
|
* @param[in] u4_round_factor
|
||
|
* Quantization Round factor
|
||
|
*
|
||
|
* @param[out] pu1_nnz
|
||
|
* Total non-zero coefficients in the current sub-block
|
||
|
*
|
||
|
* @returns
|
||
|
*
|
||
|
* @remarks
|
||
|
* NNZ for dc is populated at 0 and 5th position of pu1_nnz
|
||
|
*
|
||
|
*/
|
||
|
|
||
|
void ih264_hadamard_quant_2x2_uv(WORD16 *pi2_src,
|
||
|
WORD16 *pi2_dst,
|
||
|
const UWORD16 *pu2_scale_matrix,
|
||
|
const UWORD16 *pu2_threshold_matrix,
|
||
|
UWORD32 u4_qbits,
|
||
|
UWORD32 u4_round_factor,
|
||
|
UWORD8 *pu1_nnz)
|
||
|
{
|
||
|
WORD32 x0, x1, x2, x3, x4, x5, x6, x7;
|
||
|
WORD32 i4_value, i4_sign, plane;
|
||
|
UWORD32 u4_abs_value;
|
||
|
|
||
|
for(plane = 0; plane < 2; plane++)
|
||
|
{
|
||
|
pu1_nnz[plane] = 0;
|
||
|
|
||
|
/* Horizontal transform */
|
||
|
x4 = pi2_src[0];
|
||
|
x5 = pi2_src[1];
|
||
|
x6 = pi2_src[2];
|
||
|
x7 = pi2_src[3];
|
||
|
|
||
|
x0 = x4 + x5;
|
||
|
x1 = x4 - x5;
|
||
|
x2 = x6 + x7;
|
||
|
x3 = x6 - x7;
|
||
|
|
||
|
/* Vertical transform and quantization */
|
||
|
i4_value = (x0 + x2);
|
||
|
FWD_QUANT(i4_value, u4_abs_value, i4_sign, pu2_threshold_matrix[0],
|
||
|
pu2_scale_matrix[0], u4_round_factor, u4_qbits,
|
||
|
pu1_nnz[plane]);
|
||
|
pi2_dst[0] = i4_value;
|
||
|
|
||
|
i4_value = (x0 - x2);
|
||
|
FWD_QUANT(i4_value, u4_abs_value, i4_sign, pu2_threshold_matrix[0],
|
||
|
pu2_scale_matrix[0], u4_round_factor, u4_qbits,
|
||
|
pu1_nnz[plane]);
|
||
|
pi2_dst[2] = i4_value;
|
||
|
|
||
|
i4_value = (x1 - x3);
|
||
|
FWD_QUANT(i4_value, u4_abs_value, i4_sign, pu2_threshold_matrix[0],
|
||
|
pu2_scale_matrix[0], u4_round_factor, u4_qbits,
|
||
|
pu1_nnz[plane]);
|
||
|
pi2_dst[3] = i4_value;
|
||
|
|
||
|
i4_value = (x1 + x3);
|
||
|
FWD_QUANT(i4_value, u4_abs_value, i4_sign, pu2_threshold_matrix[0],
|
||
|
pu2_scale_matrix[0], u4_round_factor, u4_qbits,
|
||
|
pu1_nnz[plane]);
|
||
|
pi2_dst[1] = i4_value;
|
||
|
|
||
|
pi2_dst += 4;
|
||
|
pi2_src += 4;
|
||
|
|
||
|
}
|
||
|
}
|
||
|
|
||
|
/*
|
||
|
*******************************************************************************
|
||
|
*
|
||
|
* @brief
|
||
|
* This function performs Single stage forward transform CF8 and quantization on 8*8 blocks
|
||
|
* for h.264
|
||
|
*
|
||
|
* @par Description:
|
||
|
* Performs single stage 8x8 forward transform CF8 after calculating the residue
|
||
|
* The result is then quantized
|
||
|
*
|
||
|
* @param[in] pu1_src
|
||
|
* Input 8x8 pixels
|
||
|
*
|
||
|
* @param[in] pu1_pred
|
||
|
* Input 8x8 pixels
|
||
|
*
|
||
|
* @param[in] pi1_out
|
||
|
* Output 8x8 pixels
|
||
|
*
|
||
|
* @param[in] u4_thresh
|
||
|
* Threshold under which the coeffs are not quantized
|
||
|
*
|
||
|
* @param[in] u4_qp_div
|
||
|
* QP/6
|
||
|
*
|
||
|
* @param[in] u4_qp_rem
|
||
|
* QP%6
|
||
|
*
|
||
|
* @param[in] u2_src_stride
|
||
|
* Source stride
|
||
|
*
|
||
|
* @param[in] pred_strd
|
||
|
* stride for prediciton buffer
|
||
|
*
|
||
|
* @param[in] dst_strd
|
||
|
* stride for destination buffer
|
||
|
*
|
||
|
* @param[in] pu4_quant_mat
|
||
|
* Pointer to the 4x4 quantization matrix
|
||
|
*
|
||
|
* @returns Void
|
||
|
*
|
||
|
*
|
||
|
*******************************************************************************
|
||
|
*/
|
||
|
void ih264_resi_trans_quant_8x8(UWORD8 *pu1_src,
|
||
|
UWORD8 *pu1_pred,
|
||
|
WORD16 *pi2_out,
|
||
|
WORD32 src_strd,
|
||
|
WORD32 pred_strd,
|
||
|
const UWORD16 *pu2_scale_matrix,
|
||
|
const UWORD16 *pu2_threshold_matrix,
|
||
|
UWORD32 u4_qbits,
|
||
|
UWORD32 u4_round_factor,
|
||
|
UWORD8 *pu1_nnz,
|
||
|
WORD16 *pu1_dc_alt_addr)
|
||
|
|
||
|
{
|
||
|
WORD16 *pi2_out_tmp = pi2_out;
|
||
|
UWORD32 i;
|
||
|
WORD32 a0, a1, a2, a3, a4, a5, a6, a7;
|
||
|
WORD32 r0, r1, r2, r3, r4, r5, r6, r7;
|
||
|
WORD32 i4_sign;
|
||
|
UWORD32 u4_abs_value;
|
||
|
UWORD32 u4_nonzero_coeff = 0;
|
||
|
|
||
|
UNUSED(pu1_dc_alt_addr);
|
||
|
|
||
|
/*Horizontal transform */
|
||
|
/* we are going to use the a's and r's in a twisted way since */
|
||
|
/*i dont want to declare more variables */
|
||
|
for(i = 0; i < SUB_BLK_WIDTH_8x8; ++i)
|
||
|
{
|
||
|
r0 = pu1_src[0];
|
||
|
r0 -= pu1_pred[0];
|
||
|
r1 = pu1_src[1];
|
||
|
r1 -= pu1_pred[1];
|
||
|
r2 = pu1_src[2];r2 -= pu1_pred[2];
|
||
|
r3 = pu1_src[3];r3 -= pu1_pred[3];
|
||
|
r4 = pu1_src[4];r4 -= pu1_pred[4];
|
||
|
r5 = pu1_src[5];r5 -= pu1_pred[5];
|
||
|
r6 = pu1_src[6];r6 -= pu1_pred[6];
|
||
|
r7 = pu1_src[7];r7 -= pu1_pred[7];
|
||
|
|
||
|
|
||
|
a0 = r0 + r7;
|
||
|
a1 = r1 + r6;
|
||
|
a2 = r2 + r5;
|
||
|
a3 = r3 + r4;
|
||
|
|
||
|
a4 = a0 + a3;
|
||
|
a5 = a1 + a2;
|
||
|
a6 = a0 - a3;
|
||
|
a7 = a1 - a2;
|
||
|
|
||
|
pi2_out_tmp[0] = a4 + a5;
|
||
|
|
||
|
pi2_out_tmp[2] = a6 + (a7>>1);
|
||
|
pi2_out_tmp[4] = a4 - a5;
|
||
|
pi2_out_tmp[6] = (a6>>1) - a7;
|
||
|
|
||
|
a0 = r0 - r7;
|
||
|
a1 = r1 - r6;
|
||
|
a2 = r2 - r5;
|
||
|
a3 = r3 - r4;
|
||
|
|
||
|
a4 = a1 + a2 + ((a0>>1) + a0);
|
||
|
a5 = a0 - a3 - ((a2>>1) + a2);
|
||
|
a6 = a0 + a3 - ((a1>>1) + a1);
|
||
|
a7 = a1 - a2 + ((a3>>1) + a3);
|
||
|
|
||
|
pi2_out_tmp[1] = a4 + (a7>>2);
|
||
|
pi2_out_tmp[3] = a5 + (a6>>2);
|
||
|
pi2_out_tmp[5] = a6 - (a5>>2);
|
||
|
pi2_out_tmp[7] = (a4>>2) - a7;
|
||
|
|
||
|
pu1_src += src_strd;
|
||
|
pu1_pred += pred_strd;
|
||
|
pi2_out_tmp += 8;
|
||
|
}
|
||
|
|
||
|
/*vertical transform and quant */
|
||
|
|
||
|
pi2_out_tmp = pi2_out;
|
||
|
|
||
|
for (i = 0; i < SUB_BLK_WIDTH_8x8; ++i)
|
||
|
{
|
||
|
|
||
|
r0 = pi2_out_tmp[0];
|
||
|
r1 = pi2_out_tmp[8];
|
||
|
r2 = pi2_out_tmp[16];
|
||
|
r3 = pi2_out_tmp[24];
|
||
|
r4 = pi2_out_tmp[32];
|
||
|
r5 = pi2_out_tmp[40];
|
||
|
r6 = pi2_out_tmp[48];
|
||
|
r7 = pi2_out_tmp[56];
|
||
|
|
||
|
a0 = r0 + r7;
|
||
|
a1 = r1 + r6;
|
||
|
a2 = r2 + r5;
|
||
|
a3 = r3 + r4;
|
||
|
|
||
|
a4 = a0 + a3;
|
||
|
a5 = a1 + a2;
|
||
|
a6 = a0 - a3;
|
||
|
a7 = a1 - a2;
|
||
|
|
||
|
a0 = r0 - r7;
|
||
|
a1 = r1 - r6;
|
||
|
a2 = r2 - r5;
|
||
|
a3 = r3 - r4;
|
||
|
|
||
|
r0 = a4 + a5;
|
||
|
r2 = a6 + (a7>>1);
|
||
|
r4 = a4 - a5;
|
||
|
r6 = (a6>>1) - a7;
|
||
|
|
||
|
a4 = a1 + a2 + ((a0>>1) + a0);
|
||
|
a5 = a0 - a3 - ((a2>>1) + a2);
|
||
|
a6 = a0 + a3 - ((a1>>1) + a1);
|
||
|
a7 = a1 - a2 + ((a3>>1) + a3);
|
||
|
|
||
|
r1 = a4 + (a7>>2);
|
||
|
r3 = a5 + (a6>>2);
|
||
|
r5 = a6 - (a5>>2);
|
||
|
r7 = (a4>>2) - a7;
|
||
|
|
||
|
FWD_QUANT(r0, u4_abs_value, i4_sign, pu2_threshold_matrix[0],
|
||
|
pu2_scale_matrix[0], u4_round_factor, u4_qbits,
|
||
|
u4_nonzero_coeff);
|
||
|
pi2_out_tmp[0] = r0;
|
||
|
|
||
|
FWD_QUANT(r1, u4_abs_value, i4_sign, pu2_threshold_matrix[8],
|
||
|
pu2_scale_matrix[8], u4_round_factor, u4_qbits,
|
||
|
u4_nonzero_coeff);
|
||
|
pi2_out_tmp[8] = r1;
|
||
|
|
||
|
FWD_QUANT(r2, u4_abs_value, i4_sign, pu2_threshold_matrix[16],
|
||
|
pu2_scale_matrix[16], u4_round_factor, u4_qbits,
|
||
|
u4_nonzero_coeff);
|
||
|
pi2_out_tmp[16] = r2;
|
||
|
|
||
|
FWD_QUANT(r3, u4_abs_value, i4_sign, pu2_threshold_matrix[24],
|
||
|
pu2_scale_matrix[24], u4_round_factor, u4_qbits,
|
||
|
u4_nonzero_coeff);
|
||
|
pi2_out_tmp[24] = r3;
|
||
|
|
||
|
FWD_QUANT(r4, u4_abs_value, i4_sign, pu2_threshold_matrix[32],
|
||
|
pu2_scale_matrix[32], u4_round_factor, u4_qbits,
|
||
|
u4_nonzero_coeff);
|
||
|
pi2_out_tmp[32] = r4;
|
||
|
|
||
|
FWD_QUANT(r5, u4_abs_value, i4_sign, pu2_threshold_matrix[40],
|
||
|
pu2_scale_matrix[40], u4_round_factor, u4_qbits,
|
||
|
u4_nonzero_coeff);
|
||
|
pi2_out_tmp[40] = r5;
|
||
|
|
||
|
FWD_QUANT(r6, u4_abs_value, i4_sign, pu2_threshold_matrix[48],
|
||
|
pu2_scale_matrix[48], u4_round_factor, u4_qbits,
|
||
|
u4_nonzero_coeff);
|
||
|
pi2_out_tmp[48] = r6;
|
||
|
|
||
|
FWD_QUANT(r7, u4_abs_value, i4_sign, pu2_threshold_matrix[56],
|
||
|
pu2_scale_matrix[56], u4_round_factor, u4_qbits,
|
||
|
u4_nonzero_coeff);
|
||
|
pi2_out_tmp[56] = r7;
|
||
|
|
||
|
pi2_out_tmp++;
|
||
|
pu2_scale_matrix++;
|
||
|
pu2_threshold_matrix++;
|
||
|
}
|
||
|
/* Return total nonzero coefficients in the current sub block */
|
||
|
*pu1_nnz = u4_nonzero_coeff;
|
||
|
}
|