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874 lines
30 KiB
874 lines
30 KiB
/******************************************************************************
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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_iquant_itrans_recon.c
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*
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* @brief
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* Contains definition of functions for h264 inverse quantization inverse transformation and recon
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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_iquant_itrans_recon_4x4()
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* - ih264_iquant_itrans_recon_8x8()
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* - ih264_iquant_itrans_recon_4x4_dc()
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* - ih264_iquant_itrans_recon_8x8_dc()
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* - ih264_iquant_itrans_recon_chroma_4x4()
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* -ih264_iquant_itrans_recon_chroma_4x4_dc()
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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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/*****************************************************************************/
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/* File Includes */
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/*****************************************************************************/
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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_trans_macros.h"
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#include "ih264_macros.h"
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#include "ih264_platform_macros.h"
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#include "ih264_trans_data.h"
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#include "ih264_size_defs.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 This function reconstructs a 4x4 sub block from quantized resiude and
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* prediction buffer
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*
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* @par Description:
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* The quantized residue is first inverse quantized, then inverse transformed.
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* This inverse transformed content is added to the prediction buffer to recon-
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* struct the end output
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*
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* @param[in] pi2_src
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* quantized 4x4 block
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*
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* @param[in] pu1_pred
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* prediction 4x4 block
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*
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* @param[out] pu1_out
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* reconstructed 4x4 block
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*
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* @param[in] src_strd
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* quantization buffer stride
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*
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* @param[in] pred_strd,
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* Prediction buffer stride
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*
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* @param[in] out_strd
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* recon buffer Stride
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*
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* @param[in] pu2_scaling_list
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* pointer to scaling list
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*
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* @param[in] pu2_norm_adjust
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* pointer to inverse scale matrix
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*
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* @param[in] u4_qp_div_6
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* Floor (qp/6)
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*
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* @param[in] pi4_tmp
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* temporary buffer of size 1*16
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*
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* @returns none
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*
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* @remarks none
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*
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*******************************************************************************
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*/
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void ih264_iquant_itrans_recon_4x4(WORD16 *pi2_src,
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UWORD8 *pu1_pred,
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UWORD8 *pu1_out,
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WORD32 pred_strd,
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WORD32 out_strd,
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const UWORD16 *pu2_iscal_mat,
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const UWORD16 *pu2_weigh_mat,
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UWORD32 u4_qp_div_6,
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WORD16 *pi2_tmp,
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WORD32 iq_start_idx,
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WORD16 *pi2_dc_ld_addr
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)
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{
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WORD16 *pi2_src_ptr = pi2_src;
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WORD16 *pi2_tmp_ptr = pi2_tmp;
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UWORD8 *pu1_pred_ptr = pu1_pred;
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UWORD8 *pu1_out_ptr = pu1_out;
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WORD16 x0, x1, x2, x3, i;
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WORD32 q0, q1, q2, q3;
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WORD16 i_macro;
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WORD16 rnd_fact = (u4_qp_div_6 < 4) ? 1 << (3 - u4_qp_div_6) : 0;
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/* inverse quant */
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/*horizontal inverse transform */
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for(i = 0; i < SUB_BLK_WIDTH_4x4; i++)
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{
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q0 = pi2_src_ptr[0];
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INV_QUANT(q0, pu2_iscal_mat[0], pu2_weigh_mat[0], u4_qp_div_6, rnd_fact,
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4);
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if (i==0 && iq_start_idx == 1)
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q0 = pi2_dc_ld_addr[0]; // Restoring dc value for intra case
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q2 = pi2_src_ptr[2];
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INV_QUANT(q2, pu2_iscal_mat[2], pu2_weigh_mat[2], u4_qp_div_6, rnd_fact,
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4);
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x0 = q0 + q2;
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x1 = q0 - q2;
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q1 = pi2_src_ptr[1];
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INV_QUANT(q1, pu2_iscal_mat[1], pu2_weigh_mat[1], u4_qp_div_6, rnd_fact,
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4);
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q3 = pi2_src_ptr[3];
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INV_QUANT(q3, pu2_iscal_mat[3], pu2_weigh_mat[3], u4_qp_div_6, rnd_fact,
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4);
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x2 = (q1 >> 1) - q3;
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x3 = q1 + (q3 >> 1);
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pi2_tmp_ptr[0] = x0 + x3;
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pi2_tmp_ptr[1] = x1 + x2;
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pi2_tmp_ptr[2] = x1 - x2;
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pi2_tmp_ptr[3] = x0 - x3;
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pi2_src_ptr += SUB_BLK_WIDTH_4x4;
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pi2_tmp_ptr += SUB_BLK_WIDTH_4x4;
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pu2_iscal_mat += SUB_BLK_WIDTH_4x4;
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pu2_weigh_mat += SUB_BLK_WIDTH_4x4;
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}
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/* vertical inverse transform */
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pi2_tmp_ptr = pi2_tmp;
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for(i = 0; i < SUB_BLK_WIDTH_4x4; i++)
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{
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pu1_pred_ptr = pu1_pred;
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pu1_out = pu1_out_ptr;
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x0 = (pi2_tmp_ptr[0] + pi2_tmp_ptr[8]);
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x1 = (pi2_tmp_ptr[0] - pi2_tmp_ptr[8]);
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x2 = (pi2_tmp_ptr[4] >> 1) - pi2_tmp_ptr[12];
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x3 = pi2_tmp_ptr[4] + (pi2_tmp_ptr[12] >> 1);
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/* inverse prediction */
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i_macro = x0 + x3;
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i_macro = ((i_macro + 32) >> 6);
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i_macro += *pu1_pred_ptr;
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*pu1_out = CLIP_U8(i_macro);
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pu1_pred_ptr += pred_strd;
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pu1_out += out_strd;
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i_macro = x1 + x2;
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i_macro = ((i_macro + 32) >> 6);
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i_macro += *pu1_pred_ptr;
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*pu1_out = CLIP_U8(i_macro);
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pu1_pred_ptr += pred_strd;
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pu1_out += out_strd;
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i_macro = x1 - x2;
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i_macro = ((i_macro + 32) >> 6);
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i_macro += *pu1_pred_ptr;
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*pu1_out = CLIP_U8(i_macro);
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pu1_pred_ptr += pred_strd;
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pu1_out += out_strd;
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i_macro = x0 - x3;
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i_macro = ((i_macro + 32) >> 6);
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i_macro += *pu1_pred_ptr;
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*pu1_out = CLIP_U8(i_macro);
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pi2_tmp_ptr++;
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pu1_out_ptr++;
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pu1_pred++;
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}
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}
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void ih264_iquant_itrans_recon_4x4_dc(WORD16 *pi2_src,
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UWORD8 *pu1_pred,
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UWORD8 *pu1_out,
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WORD32 pred_strd,
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WORD32 out_strd,
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const UWORD16 *pu2_iscal_mat,
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const UWORD16 *pu2_weigh_mat,
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UWORD32 u4_qp_div_6,
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WORD16 *pi2_tmp,
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WORD32 iq_start_idx,
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WORD16 *pi2_dc_ld_addr)
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{
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UWORD8 *pu1_pred_ptr = pu1_pred;
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UWORD8 *pu1_out_ptr = pu1_out;
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WORD32 q0;
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WORD16 x, i_macro, i;
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WORD16 rnd_fact = (u4_qp_div_6 < 4) ? 1 << (3 - u4_qp_div_6) : 0;
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UNUSED(pi2_tmp);
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if (iq_start_idx == 0)
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{
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q0 = pi2_src[0];
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INV_QUANT(q0, pu2_iscal_mat[0], pu2_weigh_mat[0], u4_qp_div_6, rnd_fact, 4);
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}
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else
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{
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q0 = pi2_dc_ld_addr[0]; // Restoring dc value for intra case3
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}
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i_macro = ((q0 + 32) >> 6);
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for(i = 0; i < SUB_BLK_WIDTH_4x4; i++)
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{
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pu1_pred_ptr = pu1_pred;
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pu1_out = pu1_out_ptr;
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/* inverse prediction */
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x = i_macro + *pu1_pred_ptr;
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*pu1_out = CLIP_U8(x);
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pu1_pred_ptr += pred_strd;
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pu1_out += out_strd;
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x = i_macro + *pu1_pred_ptr;
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*pu1_out = CLIP_U8(x);
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pu1_pred_ptr += pred_strd;
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pu1_out += out_strd;
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x = i_macro + *pu1_pred_ptr;
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*pu1_out = CLIP_U8(x);
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pu1_pred_ptr += pred_strd;
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pu1_out += out_strd;
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x = i_macro + *pu1_pred_ptr;
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*pu1_out = CLIP_U8(x);
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pu1_out_ptr++;
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pu1_pred++;
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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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* This function performs inverse quant and Inverse transform type Ci4 for 8x8 block
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*
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* @par Description:
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* Performs inverse transform Ci8 and adds the residue to get the
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* reconstructed block
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*
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* @param[in] pi2_src
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* Input 8x8coefficients
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*
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* @param[in] pu1_pred
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* Prediction 8x8 block
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*
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* @param[out] pu1_recon
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* Output 8x8 block
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*
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* @param[in] q_div
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* QP/6
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*
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* @param[in] q_rem
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* QP%6
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*
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* @param[in] q_lev
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* Quantizer level
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*
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* @param[in] src_strd
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* Input 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] out_strd
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* Output Stride
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*
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* @param[in] pi4_tmp
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* temporary buffer of size 1*16 we dont need a bigger blcok since we reuse
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* the tmp for each block
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*
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* @param[in] pu4_iquant_mat
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* Pointer to the inverse quantization matrix
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*
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* @returns Void
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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_iquant_itrans_recon_8x8(WORD16 *pi2_src,
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UWORD8 *pu1_pred,
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UWORD8 *pu1_out,
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WORD32 pred_strd,
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WORD32 out_strd,
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const UWORD16 *pu2_iscale_mat,
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const UWORD16 *pu2_weigh_mat,
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UWORD32 qp_div,
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WORD16 *pi2_tmp,
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WORD32 iq_start_idx,
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WORD16 *pi2_dc_ld_addr
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)
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{
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WORD32 i;
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WORD16 *pi2_tmp_ptr = pi2_tmp;
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UWORD8 *pu1_pred_ptr = pu1_pred;
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UWORD8 *pu1_out_ptr = pu1_out;
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WORD16 i_z0, i_z1, i_z2, i_z3, i_z4, i_z5, i_z6, i_z7;
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WORD16 i_y0, i_y1, i_y2, i_y3, i_y4, i_y5, i_y6, i_y7;
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WORD16 i_macro;
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WORD32 q;
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WORD32 rnd_fact = (qp_div < 6) ? (1 << (5 - qp_div)) : 0;
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UNUSED(iq_start_idx);
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UNUSED(pi2_dc_ld_addr);
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/*************************************************************/
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/* De quantization of coefficients. Will be replaced by SIMD */
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/* operations on platform. Note : DC coeff is not scaled */
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/*************************************************************/
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for(i = 0; i < (SUB_BLK_WIDTH_8x8 * SUB_BLK_WIDTH_8x8); i++)
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{
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q = pi2_src[i];
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INV_QUANT(q, pu2_iscale_mat[i], pu2_weigh_mat[i], qp_div, rnd_fact, 6);
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pi2_tmp_ptr[i] = q;
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}
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/* Perform Inverse transform */
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/*--------------------------------------------------------------------*/
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/* IDCT [ Horizontal transformation ] */
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/*--------------------------------------------------------------------*/
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for(i = 0; i < SUB_BLK_WIDTH_8x8; i++)
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{
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/*------------------------------------------------------------------*/
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/* y0 = w0 + w4 */
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/* y1 = -w3 + w5 - w7 - (w7 >> 1) */
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/* y2 = w0 - w4 */
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/* y3 = w1 + w7 - w3 - (w3 >> 1) */
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/* y4 = (w2 >> 1) - w6 */
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/* y5 = -w1 + w7 + w5 + (w5 >> 1) */
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/* y6 = w2 + (w6 >> 1) */
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/* y7 = w3 + w5 + w1 + (w1 >> 1) */
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/*------------------------------------------------------------------*/
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i_y0 = (pi2_tmp_ptr[0] + pi2_tmp_ptr[4] );
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i_y1 = ((WORD32)(-pi2_tmp_ptr[3]) + pi2_tmp_ptr[5] - pi2_tmp_ptr[7]
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- (pi2_tmp_ptr[7] >> 1));
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i_y2 = (pi2_tmp_ptr[0] - pi2_tmp_ptr[4] );
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i_y3 = ((WORD32)pi2_tmp_ptr[1] + pi2_tmp_ptr[7] - pi2_tmp_ptr[3]
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- (pi2_tmp_ptr[3] >> 1));
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i_y4 = ((pi2_tmp_ptr[2] >> 1) - pi2_tmp_ptr[6] );
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i_y5 = ((WORD32)(-pi2_tmp_ptr[1]) + pi2_tmp_ptr[7] + pi2_tmp_ptr[5]
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+ (pi2_tmp_ptr[5] >> 1));
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i_y6 = (pi2_tmp_ptr[2] + (pi2_tmp_ptr[6] >> 1));
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i_y7 = ((WORD32)pi2_tmp_ptr[3] + pi2_tmp_ptr[5] + pi2_tmp_ptr[1]
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+ (pi2_tmp_ptr[1] >> 1));
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/*------------------------------------------------------------------*/
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/* z0 = y0 + y6 */
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/* z1 = y1 + (y7 >> 2) */
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/* z2 = y2 + y4 */
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/* z3 = y3 + (y5 >> 2) */
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/* z4 = y2 - y4 */
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/* z5 = (y3 >> 2) - y5 */
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/* z6 = y0 - y6 */
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/* z7 = y7 - (y1 >> 2) */
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/*------------------------------------------------------------------*/
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i_z0 = i_y0 + i_y6;
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i_z1 = i_y1 + (i_y7 >> 2);
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i_z2 = i_y2 + i_y4;
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i_z3 = i_y3 + (i_y5 >> 2);
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i_z4 = i_y2 - i_y4;
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i_z5 = (i_y3 >> 2) - i_y5;
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i_z6 = i_y0 - i_y6;
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i_z7 = i_y7 - (i_y1 >> 2);
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/*------------------------------------------------------------------*/
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/* x0 = z0 + z7 */
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/* x1 = z2 + z5 */
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/* x2 = z4 + z3 */
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/* x3 = z6 + z1 */
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/* x4 = z6 - z1 */
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/* x5 = z4 - z3 */
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/* x6 = z2 - z5 */
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/* x7 = z0 - z7 */
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/*------------------------------------------------------------------*/
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pi2_tmp_ptr[0] = i_z0 + i_z7;
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pi2_tmp_ptr[1] = i_z2 + i_z5;
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pi2_tmp_ptr[2] = i_z4 + i_z3;
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pi2_tmp_ptr[3] = i_z6 + i_z1;
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pi2_tmp_ptr[4] = i_z6 - i_z1;
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pi2_tmp_ptr[5] = i_z4 - i_z3;
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pi2_tmp_ptr[6] = i_z2 - i_z5;
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pi2_tmp_ptr[7] = i_z0 - i_z7;
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/* move to the next row */
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//pi2_src_ptr += SUB_BLK_WIDTH_8x8;
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pi2_tmp_ptr += SUB_BLK_WIDTH_8x8;
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}
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/*--------------------------------------------------------------------*/
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/* IDCT [ Vertical transformation] and Xij = (xij + 32)>>6 */
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/* */
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/* Add the prediction and store it back to reconstructed frame buffer */
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/* [Prediction buffer itself in this case] */
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/*--------------------------------------------------------------------*/
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pi2_tmp_ptr = pi2_tmp;
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for(i = 0; i < SUB_BLK_WIDTH_8x8; i++)
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{
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pu1_pred_ptr = pu1_pred;
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pu1_out = pu1_out_ptr;
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/*------------------------------------------------------------------*/
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/* y0j = w0j + w4j */
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/* y1j = -w3j + w5j -w7j -(w7j >> 1) */
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/* y2j = w0j -w4j */
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/* y3j = w1j + w7j -w3j -(w3j >> 1) */
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/* y4j = ( w2j >> 1 ) -w6j */
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/* y5j = -w1j + w7j + w5j + (w5j >> 1) */
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/* y6j = w2j + ( w6j >> 1 ) */
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/* y7j = w3j + w5j + w1j + (w1j >> 1) */
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/*------------------------------------------------------------------*/
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i_y0 = pi2_tmp_ptr[0] + pi2_tmp_ptr[32];
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|
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i_y1 = (WORD32)(-pi2_tmp_ptr[24]) + pi2_tmp_ptr[40] - pi2_tmp_ptr[56]
|
|
- (pi2_tmp_ptr[56] >> 1);
|
|
|
|
i_y2 = pi2_tmp_ptr[0] - pi2_tmp_ptr[32];
|
|
|
|
i_y3 = (WORD32)pi2_tmp_ptr[8] + pi2_tmp_ptr[56] - pi2_tmp_ptr[24]
|
|
- (pi2_tmp_ptr[24] >> 1);
|
|
|
|
i_y4 = (pi2_tmp_ptr[16] >> 1) - pi2_tmp_ptr[48];
|
|
|
|
i_y5 = (WORD32)(-pi2_tmp_ptr[8]) + pi2_tmp_ptr[56] + pi2_tmp_ptr[40]
|
|
+ (pi2_tmp_ptr[40] >> 1);
|
|
|
|
i_y6 = pi2_tmp_ptr[16] + (pi2_tmp_ptr[48] >> 1);
|
|
|
|
i_y7 = (WORD32)pi2_tmp_ptr[24] + pi2_tmp_ptr[40] + pi2_tmp_ptr[8]
|
|
+ (pi2_tmp_ptr[8] >> 1);
|
|
|
|
/*------------------------------------------------------------------*/
|
|
/* z0j = y0j + y6j */
|
|
/* z1j = y1j + (y7j >> 2) */
|
|
/* z2j = y2j + y4j */
|
|
/* z3j = y3j + (y5j >> 2) */
|
|
/* z4j = y2j -y4j */
|
|
/* z5j = (y3j >> 2) -y5j */
|
|
/* z6j = y0j -y6j */
|
|
/* z7j = y7j -(y1j >> 2) */
|
|
/*------------------------------------------------------------------*/
|
|
i_z0 = i_y0 + i_y6;
|
|
i_z1 = i_y1 + (i_y7 >> 2);
|
|
i_z2 = i_y2 + i_y4;
|
|
i_z3 = i_y3 + (i_y5 >> 2);
|
|
i_z4 = i_y2 - i_y4;
|
|
i_z5 = (i_y3 >> 2) - i_y5;
|
|
i_z6 = i_y0 - i_y6;
|
|
i_z7 = i_y7 - (i_y1 >> 2);
|
|
|
|
/*------------------------------------------------------------------*/
|
|
/* x0j = z0j + z7j */
|
|
/* x1j = z2j + z5j */
|
|
/* x2j = z4j + z3j */
|
|
/* x3j = z6j + z1j */
|
|
/* x4j = z6j -z1j */
|
|
/* x5j = z4j -z3j */
|
|
/* x6j = z2j -z5j */
|
|
/* x7j = z0j -z7j */
|
|
/*------------------------------------------------------------------*/
|
|
i_macro = ((i_z0 + i_z7 + 32) >> 6) + *pu1_pred_ptr;
|
|
*pu1_out = CLIP_U8(i_macro);
|
|
/* Change uc_recBuffer to Point to next element in the same column*/
|
|
pu1_pred_ptr += pred_strd;
|
|
pu1_out += out_strd;
|
|
|
|
i_macro = ((i_z2 + i_z5 + 32) >> 6) + *pu1_pred_ptr;
|
|
*pu1_out = CLIP_U8(i_macro);
|
|
pu1_pred_ptr += pred_strd;
|
|
pu1_out += out_strd;
|
|
|
|
i_macro = ((i_z4 + i_z3 + 32) >> 6) + *pu1_pred_ptr;
|
|
*pu1_out = CLIP_U8(i_macro);
|
|
pu1_pred_ptr += pred_strd;
|
|
pu1_out += out_strd;
|
|
|
|
i_macro = ((i_z6 + i_z1 + 32) >> 6) + *pu1_pred_ptr;
|
|
*pu1_out = CLIP_U8(i_macro);
|
|
pu1_pred_ptr += pred_strd;
|
|
pu1_out += out_strd;
|
|
|
|
i_macro = ((i_z6 - i_z1 + 32) >> 6) + *pu1_pred_ptr;
|
|
*pu1_out = CLIP_U8(i_macro);
|
|
pu1_pred_ptr += pred_strd;
|
|
pu1_out += out_strd;
|
|
|
|
i_macro = ((i_z4 - i_z3 + 32) >> 6) + *pu1_pred_ptr;
|
|
*pu1_out = CLIP_U8(i_macro);
|
|
pu1_pred_ptr += pred_strd;
|
|
pu1_out += out_strd;
|
|
|
|
i_macro = ((i_z2 - i_z5 + 32) >> 6) + *pu1_pred_ptr;
|
|
*pu1_out = CLIP_U8(i_macro);
|
|
pu1_pred_ptr += pred_strd;
|
|
pu1_out += out_strd;
|
|
|
|
i_macro = ((i_z0 - i_z7 + 32) >> 6) + *pu1_pred_ptr;
|
|
*pu1_out = CLIP_U8(i_macro);
|
|
|
|
pi2_tmp_ptr++;
|
|
pu1_out_ptr++;
|
|
pu1_pred++;
|
|
}
|
|
}
|
|
|
|
void ih264_iquant_itrans_recon_8x8_dc(WORD16 *pi2_src,
|
|
UWORD8 *pu1_pred,
|
|
UWORD8 *pu1_out,
|
|
WORD32 pred_strd,
|
|
WORD32 out_strd,
|
|
const UWORD16 *pu2_iscale_mat,
|
|
const UWORD16 *pu2_weigh_mat,
|
|
UWORD32 qp_div,
|
|
WORD16 *pi2_tmp,
|
|
WORD32 iq_start_idx,
|
|
WORD16 *pi2_dc_ld_addr)
|
|
{
|
|
UWORD8 *pu1_pred_ptr = pu1_pred;
|
|
UWORD8 *pu1_out_ptr = pu1_out;
|
|
WORD16 x, i, i_macro;
|
|
WORD32 q;
|
|
WORD32 rnd_fact = (qp_div < 6) ? (1 << (5 - qp_div)) : 0;
|
|
UNUSED(pi2_tmp);
|
|
UNUSED(iq_start_idx);
|
|
UNUSED(pi2_dc_ld_addr);
|
|
/*************************************************************/
|
|
/* Dequantization of coefficients. Will be replaced by SIMD */
|
|
/* operations on platform. Note : DC coeff is not scaled */
|
|
/*************************************************************/
|
|
q = pi2_src[0];
|
|
INV_QUANT(q, pu2_iscale_mat[0], pu2_weigh_mat[0], qp_div, rnd_fact, 6);
|
|
i_macro = (q + 32) >> 6;
|
|
/* Perform Inverse transform */
|
|
/*--------------------------------------------------------------------*/
|
|
/* IDCT [ Horizontal transformation ] */
|
|
/*--------------------------------------------------------------------*/
|
|
/*--------------------------------------------------------------------*/
|
|
/* IDCT [ Vertical transformation] and Xij = (xij + 32)>>6 */
|
|
/* */
|
|
/* Add the prediction and store it back to reconstructed frame buffer */
|
|
/* [Prediction buffer itself in this case] */
|
|
/*--------------------------------------------------------------------*/
|
|
for(i = 0; i < SUB_BLK_WIDTH_8x8; i++)
|
|
{
|
|
pu1_pred_ptr = pu1_pred;
|
|
pu1_out = pu1_out_ptr;
|
|
|
|
x = i_macro + *pu1_pred_ptr;
|
|
*pu1_out = CLIP_U8(x);
|
|
/* Change uc_recBuffer to Point to next element in the same column*/
|
|
pu1_pred_ptr += pred_strd;
|
|
pu1_out += out_strd;
|
|
|
|
x = i_macro + *pu1_pred_ptr;
|
|
*pu1_out = CLIP_U8(x);
|
|
pu1_pred_ptr += pred_strd;
|
|
pu1_out += out_strd;
|
|
|
|
x = i_macro + *pu1_pred_ptr;
|
|
*pu1_out = CLIP_U8(x);
|
|
pu1_pred_ptr += pred_strd;
|
|
pu1_out += out_strd;
|
|
|
|
x = i_macro + *pu1_pred_ptr;
|
|
*pu1_out = CLIP_U8(x);
|
|
pu1_pred_ptr += pred_strd;
|
|
pu1_out += out_strd;
|
|
|
|
x = i_macro + *pu1_pred_ptr;
|
|
*pu1_out = CLIP_U8(x);
|
|
pu1_pred_ptr += pred_strd;
|
|
pu1_out += out_strd;
|
|
|
|
x = i_macro + *pu1_pred_ptr;
|
|
*pu1_out = CLIP_U8(x);
|
|
pu1_pred_ptr += pred_strd;
|
|
pu1_out += out_strd;
|
|
|
|
x = i_macro + *pu1_pred_ptr;
|
|
*pu1_out = CLIP_U8(x);
|
|
pu1_pred_ptr += pred_strd;
|
|
pu1_out += out_strd;
|
|
|
|
x = i_macro + *pu1_pred_ptr;
|
|
*pu1_out = CLIP_U8(x);
|
|
|
|
pu1_out_ptr++;
|
|
pu1_pred++;
|
|
}
|
|
}
|
|
|
|
/*
|
|
********************************************************************************
|
|
*
|
|
* @brief This function reconstructs a 4x4 sub block from quantized resiude and
|
|
* prediction buffer
|
|
*
|
|
* @par Description:
|
|
* The quantized residue is first inverse quantized, then inverse transformed.
|
|
* This inverse transformed content is added to the prediction buffer to recon-
|
|
* struct the end output
|
|
*
|
|
* @param[in] pi2_src
|
|
* quantized 4x4 block
|
|
*
|
|
* @param[in] pu1_pred
|
|
* prediction 4x4 block
|
|
*
|
|
* @param[out] pu1_out
|
|
* reconstructed 4x4 block
|
|
*
|
|
* @param[in] src_strd
|
|
* quantization buffer stride
|
|
*
|
|
* @param[in] pred_strd,
|
|
* Prediction buffer stride
|
|
*
|
|
* @param[in] out_strd
|
|
* recon buffer Stride
|
|
*
|
|
* @param[in] pu2_scaling_list
|
|
* pointer to scaling list
|
|
*
|
|
* @param[in] pu2_norm_adjust
|
|
* pointer to inverse scale matrix
|
|
*
|
|
* @param[in] u4_qp_div_6
|
|
* Floor (qp/6)
|
|
*
|
|
* @param[in] pi4_tmp
|
|
* temporary buffer of size 1*16
|
|
*
|
|
* @returns none
|
|
*
|
|
* @remarks none
|
|
*
|
|
*******************************************************************************
|
|
*/
|
|
void ih264_iquant_itrans_recon_chroma_4x4(WORD16 *pi2_src,
|
|
UWORD8 *pu1_pred,
|
|
UWORD8 *pu1_out,
|
|
WORD32 pred_strd,
|
|
WORD32 out_strd,
|
|
const UWORD16 *pu2_iscal_mat,
|
|
const UWORD16 *pu2_weigh_mat,
|
|
UWORD32 u4_qp_div_6,
|
|
WORD16 *pi2_tmp,
|
|
WORD16 *pi2_dc_src)
|
|
{
|
|
WORD16 *pi2_src_ptr = pi2_src;
|
|
WORD16 *pi2_tmp_ptr = pi2_tmp;
|
|
UWORD8 *pu1_pred_ptr = pu1_pred;
|
|
UWORD8 *pu1_out_ptr = pu1_out;
|
|
WORD16 x0, x1, x2, x3, i;
|
|
WORD32 q0, q1, q2, q3;
|
|
WORD16 i_macro;
|
|
WORD16 rnd_fact = (u4_qp_div_6 < 4) ? 1 << (3 - u4_qp_div_6) : 0;
|
|
|
|
/* inverse quant */
|
|
/*horizontal inverse transform */
|
|
for(i = 0; i < SUB_BLK_WIDTH_4x4; i++)
|
|
{
|
|
if(i==0)
|
|
{
|
|
q0 = pi2_dc_src[0];
|
|
}
|
|
else
|
|
{
|
|
q0 = pi2_src_ptr[0];
|
|
INV_QUANT(q0, pu2_iscal_mat[0], pu2_weigh_mat[0], u4_qp_div_6, rnd_fact, 4);
|
|
}
|
|
|
|
q2 = pi2_src_ptr[2];
|
|
INV_QUANT(q2, pu2_iscal_mat[2], pu2_weigh_mat[2], u4_qp_div_6, rnd_fact,
|
|
4);
|
|
|
|
x0 = q0 + q2;
|
|
x1 = q0 - q2;
|
|
|
|
q1 = pi2_src_ptr[1];
|
|
INV_QUANT(q1, pu2_iscal_mat[1], pu2_weigh_mat[1], u4_qp_div_6, rnd_fact,
|
|
4);
|
|
|
|
q3 = pi2_src_ptr[3];
|
|
INV_QUANT(q3, pu2_iscal_mat[3], pu2_weigh_mat[3], u4_qp_div_6, rnd_fact,
|
|
4);
|
|
|
|
x2 = (q1 >> 1) - q3;
|
|
x3 = q1 + (q3 >> 1);
|
|
|
|
pi2_tmp_ptr[0] = x0 + x3;
|
|
pi2_tmp_ptr[1] = x1 + x2;
|
|
pi2_tmp_ptr[2] = x1 - x2;
|
|
pi2_tmp_ptr[3] = x0 - x3;
|
|
|
|
pi2_src_ptr += SUB_BLK_WIDTH_4x4;
|
|
pi2_tmp_ptr += SUB_BLK_WIDTH_4x4;
|
|
pu2_iscal_mat += SUB_BLK_WIDTH_4x4;
|
|
pu2_weigh_mat += SUB_BLK_WIDTH_4x4;
|
|
}
|
|
|
|
/* vertical inverse transform */
|
|
pi2_tmp_ptr = pi2_tmp;
|
|
for(i = 0; i < SUB_BLK_WIDTH_4x4; i++)
|
|
{
|
|
pu1_pred_ptr = pu1_pred;
|
|
pu1_out = pu1_out_ptr;
|
|
|
|
x0 = (pi2_tmp_ptr[0] + pi2_tmp_ptr[8]);
|
|
x1 = (pi2_tmp_ptr[0] - pi2_tmp_ptr[8]);
|
|
x2 = (pi2_tmp_ptr[4] >> 1) - pi2_tmp_ptr[12];
|
|
x3 = pi2_tmp_ptr[4] + (pi2_tmp_ptr[12] >> 1);
|
|
|
|
/* inverse prediction */
|
|
i_macro = x0 + x3;
|
|
i_macro = ((i_macro + 32) >> 6);
|
|
i_macro += *pu1_pred_ptr;
|
|
*pu1_out = CLIP_U8(i_macro);
|
|
pu1_pred_ptr += pred_strd;
|
|
pu1_out += out_strd;
|
|
|
|
i_macro = x1 + x2;
|
|
i_macro = ((i_macro + 32) >> 6);
|
|
i_macro += *pu1_pred_ptr;
|
|
*pu1_out = CLIP_U8(i_macro);
|
|
pu1_pred_ptr += pred_strd;
|
|
pu1_out += out_strd;
|
|
|
|
i_macro = x1 - x2;
|
|
i_macro = ((i_macro + 32) >> 6);
|
|
i_macro += *pu1_pred_ptr;
|
|
*pu1_out = CLIP_U8(i_macro);
|
|
pu1_pred_ptr += pred_strd;
|
|
pu1_out += out_strd;
|
|
|
|
i_macro = x0 - x3;
|
|
i_macro = ((i_macro + 32) >> 6);
|
|
i_macro += *pu1_pred_ptr;
|
|
*pu1_out = CLIP_U8(i_macro);
|
|
|
|
pi2_tmp_ptr++;
|
|
pu1_out_ptr+= 2; //Interleaved store for output
|
|
pu1_pred+= 2; //Interleaved load for pred buffer
|
|
}
|
|
}
|
|
|
|
/*
|
|
********************************************************************************
|
|
*
|
|
* @brief This function reconstructs a 4x4 sub block from quantized resiude and
|
|
* prediction buffer if only dc value is present for residue
|
|
*
|
|
* @par Description:
|
|
* The quantized residue is first inverse quantized,
|
|
* This inverse quantized content is added to the prediction buffer to recon-
|
|
* struct the end output
|
|
*
|
|
* @param[in] pi2_src
|
|
* quantized dc coefficient
|
|
*
|
|
* @param[in] pu1_pred
|
|
* prediction 4x4 block in interleaved format
|
|
*
|
|
* @param[in] pred_strd,
|
|
* Prediction buffer stride in interleaved format
|
|
*
|
|
* @param[in] out_strd
|
|
* recon buffer Stride
|
|
*
|
|
* @returns none
|
|
*
|
|
* @remarks none
|
|
*
|
|
*******************************************************************************
|
|
*/
|
|
|
|
void ih264_iquant_itrans_recon_chroma_4x4_dc(WORD16 *pi2_src,
|
|
UWORD8 *pu1_pred,
|
|
UWORD8 *pu1_out,
|
|
WORD32 pred_strd,
|
|
WORD32 out_strd,
|
|
const UWORD16 *pu2_iscal_mat,
|
|
const UWORD16 *pu2_weigh_mat,
|
|
UWORD32 u4_qp_div_6,
|
|
WORD16 *pi2_tmp,
|
|
WORD16 *pi2_dc_src)
|
|
{
|
|
UWORD8 *pu1_pred_ptr = pu1_pred;
|
|
UWORD8 *pu1_out_ptr = pu1_out;
|
|
WORD32 q0;
|
|
WORD16 x, i_macro, i;
|
|
UNUSED(pi2_src);
|
|
UNUSED(pu2_iscal_mat);
|
|
UNUSED(pu2_weigh_mat);
|
|
UNUSED(u4_qp_div_6);
|
|
UNUSED(pi2_tmp);
|
|
|
|
q0 = pi2_dc_src[0]; // Restoring dc value for intra case3
|
|
i_macro = ((q0 + 32) >> 6);
|
|
|
|
for(i = 0; i < SUB_BLK_WIDTH_4x4; i++)
|
|
{
|
|
pu1_pred_ptr = pu1_pred;
|
|
pu1_out = pu1_out_ptr;
|
|
|
|
/* inverse prediction */
|
|
x = i_macro + *pu1_pred_ptr;
|
|
*pu1_out = CLIP_U8(x);
|
|
pu1_pred_ptr += pred_strd;
|
|
pu1_out += out_strd;
|
|
|
|
x = i_macro + *pu1_pred_ptr;
|
|
*pu1_out = CLIP_U8(x);
|
|
pu1_pred_ptr += pred_strd;
|
|
pu1_out += out_strd;
|
|
|
|
x = i_macro + *pu1_pred_ptr;
|
|
*pu1_out = CLIP_U8(x);
|
|
pu1_pred_ptr += pred_strd;
|
|
pu1_out += out_strd;
|
|
|
|
x = i_macro + *pu1_pred_ptr;
|
|
*pu1_out = CLIP_U8(x);
|
|
|
|
pu1_out_ptr+=2;
|
|
pu1_pred+=2;
|
|
}
|
|
}
|