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android / platform / external / libavc / efd28f6c36d40d0a8dd92f344e1d9a992b315c36 / . / encoder / ih264e_core_coding.c
blob: 5b36aef1722ef293958e80cdc8e19a49ab8c5f07 [file] [log] [blame]
/******************************************************************************
*
* Copyright (C) 2015 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at:
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
*****************************************************************************
* Originally developed and contributed by Ittiam Systems Pvt. Ltd, Bangalore
*/
/**
*******************************************************************************
* @file
* ih264e_core_coding.c
*
* @brief
* This file contains routines that perform luma and chroma core coding for
* intra macroblocks
*
* @author
* ittiam
*
* @par List of Functions:
* - ih264e_pack_l_mb_i16()
* - ih264e_pack_c_mb_i8()
* - ih264e_code_luma_intra_macroblock_16x16()
* - ih264e_code_luma_intra_macroblock_4x4()
* - ih264e_code_chroma_intra_macroblock_8x8()
*
* @remarks
* None
*
*******************************************************************************
*/
/*****************************************************************************/
/* File Includes */
/*****************************************************************************/
/* System include files */
#include <stdio.h>
#include <string.h>
#include <assert.h>
/* User include files */
#include "ih264e_config.h"
#include "ih264_typedefs.h"
#include "ih264_platform_macros.h"
#include "iv2.h"
#include "ive2.h"
#include "ih264_macros.h"
#include "ih264_defs.h"
#include "ih264e_defs.h"
#include "ih264_trans_data.h"
#include "ih264e_error.h"
#include "ih264e_bitstream.h"
#include "ime_distortion_metrics.h"
#include "ime_defs.h"
#include "ime_structs.h"
#include "ih264_structs.h"
#include "ih264_trans_quant_itrans_iquant.h"
#include "ih264_inter_pred_filters.h"
#include "ih264_mem_fns.h"
#include "ih264_padding.h"
#include "ih264_intra_pred_filters.h"
#include "ih264_deblk_edge_filters.h"
#include "ih264_cabac_tables.h"
#include "irc_cntrl_param.h"
#include "irc_frame_info_collector.h"
#include "ih264e_rate_control.h"
#include "ih264e_cabac_structs.h"
#include "ih264e_structs.h"
#include "ih264e_globals.h"
#include "ih264e_core_coding.h"
#include "ih264e_mc.h"
/*****************************************************************************/
/* Function Definitions */
/*****************************************************************************/
/**
*******************************************************************************
*
* @brief
* This function performs does the DCT transform then Hadamard transform
* and quantization for a macroblock when the mb mode is intra 16x16 mode
*
* @par Description:
* First cf4 is done on all 16 4x4 blocks of the 16x16 input block.
* Then hadamard transform is done on the DC coefficients
* Quantization is then performed on the 16x16 block, 4x4 wise
*
* @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
* The output will be in linear format
* The first 16 continuous locations will contain the values of Dc block
* After DC block and a stride 1st AC block will follow
* After one more stride next AC block will follow
* The blocks will be in raster scan order
*
* @param[in] src_strd
* Source stride
*
* @param[in] pred_strd
* Prediction stride
*
* @param[in] dst_strd
* Destination stride
*
* @param[in] pu2_scale_matrix
* The quantization matrix for 4x4 transform
*
* @param[in] pu2_threshold_matrix
* Threshold matrix
*
* @param[in] u4_qbits
* 15+QP/6
*
* @param[in] u4_round_factor
* Round factor for quant
*
* @param[out] pu1_nnz
* Memory to store the non-zeros after transform
* The first byte will be the nnz of DC block
* From the next byte the AC nnzs will be stored in raster scan order
*
* @param u4_dc_flag
* Signals if Dc transform is to be done or not
* 1 -> Dc transform will be done
* 0 -> Dc transform will not be done
*
* @remarks
*
*******************************************************************************
*/
void ih264e_luma_16x16_resi_trans_dctrans_quant(codec_t *ps_codec,
UWORD8 *pu1_src,
UWORD8 *pu1_pred,
WORD16 *pi2_out,
WORD32 src_strd,
WORD32 pred_strd,
WORD32 dst_strd,
const UWORD16 *pu2_scale_matrix,
const UWORD16 *pu2_threshold_matrix,
UWORD32 u4_qbits,
UWORD32 u4_round_factor,
UWORD8 *pu1_nnz,
UWORD32 u4_dc_flag)
{
WORD32 blk_cntr;
WORD32 i4_offsetx, i4_offsety;
UWORD8 *pu1_curr_src, *pu1_curr_pred;
WORD16 *pi2_dc_str = pi2_out;
/* Move to the ac addresses */
pu1_nnz++;
pi2_out += dst_strd;
for (blk_cntr = 0; blk_cntr < NUM_LUMA4x4_BLOCKS_IN_MB; blk_cntr++)
{
IND2SUB_LUMA_MB(blk_cntr, i4_offsetx, i4_offsety);
pu1_curr_src = pu1_src + i4_offsetx + i4_offsety * src_strd;
pu1_curr_pred = pu1_pred + i4_offsetx + i4_offsety * pred_strd;
ps_codec->pf_resi_trans_quant_4x4(pu1_curr_src, pu1_curr_pred,
pi2_out + blk_cntr * dst_strd,
src_strd, pred_strd, pu2_scale_matrix,
pu2_threshold_matrix, u4_qbits,
u4_round_factor, &pu1_nnz[blk_cntr],
&pi2_dc_str[blk_cntr]);
}
if (!u4_dc_flag)
return;
/*
* In case of i16x16, we need to remove the contribution of dc coeffs into
* nnz of each block. We are doing that in the packing function
*/
/* Adjust pointers to point to dc values */
pi2_out -= dst_strd;
pu1_nnz--;
u4_qbits++;
u4_round_factor <<= 1;
ps_codec->pf_hadamard_quant_4x4(pi2_dc_str, pi2_out, pu2_scale_matrix,
pu2_threshold_matrix, u4_qbits,
u4_round_factor, &pu1_nnz[0]);
}
/**
*******************************************************************************
*
* @brief
* This function performs the intra 16x16 inverse transform process for H264
* it includes inverse Dc transform, inverse quant and then inverse transform
*
* @par Description:
*
* @param[in] pi2_src
* Input data, 16x16 size
* First 16 mem locations will have the Dc coffs in rater scan order in linear fashion
* after a stride 1st AC clock will be present again in raster can order
* Then each AC block of the 16x16 block will follow in raster scan order
*
* @param[in] pu1_pred
* The predicted data, 16x16 size
* Block by block form
*
* @param[in] pu1_out
* Output 16x16
* In block by block form
*
* @param[in] src_strd
* Source stride
*
* @param[in] pred_strd
* input stride for prediction buffer
*
* @param[in] out_strd
* input stride for output buffer
*
* @param[in] pu2_iscale_mat
* Inverse quantization matrix for 4x4 transform
*
* @param[in] pu2_weigh_mat
* weight matrix of 4x4 transform
*
* @param[in] qp_div
* QP/6
*
* @param[in] pi4_tmp
* Input temporary buffer
* needs to be at least 20 in size
*
* @param[in] pu4_cntrl
* Controls the transform path
* total Last 17 bits are used
* the 16th th bit will correspond to DC block
* and 32-17 will correspond to the ac blocks in raster scan order
* bit equaling zero indicates that the entire 4x4 block is zero for DC
* For AC blocks a bit equaling zero will mean that all 15 AC coffs of the block is nonzero
*
* @param[in] pi4_tmp
* Input temporary buffer
* needs to be at least COFF_CNT_SUB_BLK_4x4+COFF_CNT_SUB_BLK_4x4 size
*
* @returns
* none
*
* @remarks
* The all zero case must be taken care outside
*
*******************************************************************************
*/
void ih264e_luma_16x16_idctrans_iquant_itrans_recon(codec_t *ps_codec,
WORD16 *pi2_src,
UWORD8 *pu1_pred,
UWORD8 *pu1_out,
WORD32 src_strd,
WORD32 pred_strd,
WORD32 out_strd,
const UWORD16 *pu2_iscale_mat,
const UWORD16 *pu2_weigh_mat,
UWORD32 qp_div,
UWORD32 u4_cntrl,
UWORD32 u4_dc_trans_flag,
WORD32 *pi4_tmp)
{
/* Start index for inverse quant in a 4x4 block */
WORD32 iq_start_idx = (u4_dc_trans_flag == 0) ? 0 : 1;
/* Cntrl bits for 4x4 transforms
* u4_blk_cntrl : controls if a 4x4 block should be processed in ac path
* u4_dc_cntrl : controls is a 4x4 block is to be processed in dc path
* : dc block must contain only single dc coefficient
* u4_empty_blk_cntrl : control fot 4x4 block with no coeffs, ie no dc and ac
* : ie not (ac or dc)
*/
UWORD32 u4_blk_cntrl, u4_dc_cntrl, u4_empty_blk_cntrl;
/* tmp registers for block ids */
UWORD32 u4_blk_id;
/* Subscrripts */
WORD32 i4_offset_x, i4_offset_y;
UWORD8 *pu1_cur_prd_blk, *pu1_cur_out_blk;
/* Src and stride for dc coeffs */
UWORD32 u4_dc_inc;
WORD16 *pi2_dc_src;
/*
* For intra blocks we need to do inverse dc transform
* In case if intra blocks, its here that we populate the dc bits in cntrl
* as they cannot be populated any earlier
*/
if (u4_dc_trans_flag)
{
UWORD32 cntr, u4_dc_cntrl;
/* Do inv hadamard and place the results at the start of each AC block */
ps_codec->pf_ihadamard_scaling_4x4(pi2_src, pi2_src, pu2_iscale_mat,
pu2_weigh_mat, qp_div, pi4_tmp);
/* Update the cntrl flag */
u4_dc_cntrl = 0;
for (cntr = 0; cntr < DC_COEFF_CNT_LUMA_MB; cntr++)
{
u4_dc_cntrl |= ((pi2_src[cntr] != 0) << (15 - cntr));
}
/* Mark dc bits as 1 if corresponding ac bit is 0 */
u4_dc_cntrl = (~(u4_cntrl >> 16) & u4_dc_cntrl);
/* Combine both ac and dc bits */
u4_cntrl = (u4_cntrl & CNTRL_FLAG_AC_MASK_LUMA)
| (u4_dc_cntrl & CNTRL_FLAG_DC_MASK_LUMA);
}
/* Source for dc coeffs
* If the block is intra, we have to read dc values from first row of src
* then stride for each block is 1, other wise its src stride
*/
pi2_dc_src = (iq_start_idx == 0) ? (pi2_src + src_strd) : pi2_src;
u4_dc_inc = (iq_start_idx == 0) ? src_strd : 1;
/* The AC blocks starts from 2nd row */
pi2_src += src_strd;
/* Get the block bits */
u4_blk_cntrl = (u4_cntrl & CNTRL_FLAG_AC_MASK_LUMA);
u4_dc_cntrl = (u4_cntrl & CNTRL_FLAG_DC_MASK_LUMA) << 16;
u4_empty_blk_cntrl = (~(u4_dc_cntrl | u4_blk_cntrl)) & 0xFFFF0000;
/* Get first block to process */
DEQUEUE_BLKID_FROM_CONTROL(u4_dc_cntrl, u4_blk_id);
while (u4_blk_id < NUM_LUMA4x4_BLOCKS_IN_MB)
{
/* Compute address of src blocks */
WORD32 i4_src_offset = u4_dc_inc * u4_blk_id;
IND2SUB_LUMA_MB(u4_blk_id, i4_offset_x, i4_offset_y);
/* Compute address of out and pred blocks */
pu1_cur_prd_blk = pu1_pred + i4_offset_x + i4_offset_y * pred_strd;
pu1_cur_out_blk = pu1_out + i4_offset_x + i4_offset_y * out_strd;
/* Do inv dc transform */
ps_codec->pf_iquant_itrans_recon_4x4_dc(pi2_dc_src + i4_src_offset,
pu1_cur_prd_blk,
pu1_cur_out_blk, pred_strd,
out_strd, pu2_iscale_mat,
pu2_weigh_mat, qp_div, NULL,
iq_start_idx,
pi2_dc_src + i4_src_offset);
/* Get next DC block to process */
DEQUEUE_BLKID_FROM_CONTROL(u4_dc_cntrl, u4_blk_id);
}
/* now process ac/mixed blocks */
DEQUEUE_BLKID_FROM_CONTROL(u4_blk_cntrl, u4_blk_id);
while (u4_blk_id < NUM_LUMA4x4_BLOCKS_IN_MB)
{
WORD32 i4_src_offset = src_strd * u4_blk_id;
IND2SUB_LUMA_MB(u4_blk_id, i4_offset_x, i4_offset_y);
pu1_cur_prd_blk = pu1_pred + i4_offset_x + i4_offset_y * pred_strd;
pu1_cur_out_blk = pu1_out + i4_offset_x + i4_offset_y * out_strd;
ps_codec->pf_iquant_itrans_recon_4x4(pi2_src + i4_src_offset,
pu1_cur_prd_blk, pu1_cur_out_blk,
pred_strd, out_strd,
pu2_iscale_mat, pu2_weigh_mat,
qp_div, (WORD16*) pi4_tmp,
iq_start_idx,
pi2_dc_src + u4_blk_id);
DEQUEUE_BLKID_FROM_CONTROL(u4_blk_cntrl, u4_blk_id);
}
/* Now process empty blocks */
DEQUEUE_BLKID_FROM_CONTROL(u4_empty_blk_cntrl, u4_blk_id);
while (u4_blk_id < NUM_LUMA4x4_BLOCKS_IN_MB)
{
IND2SUB_LUMA_MB(u4_blk_id, i4_offset_x, i4_offset_y);
pu1_cur_prd_blk = pu1_pred + i4_offset_x + i4_offset_y * pred_strd;
pu1_cur_out_blk = pu1_out + i4_offset_x + i4_offset_y * out_strd;
ps_codec->pf_inter_pred_luma_copy(pu1_cur_prd_blk, pu1_cur_out_blk,
pred_strd, out_strd, SIZE_4X4_BLK_HRZ,
SIZE_4X4_BLK_VERT, 0, 0);
DEQUEUE_BLKID_FROM_CONTROL(u4_empty_blk_cntrl, u4_blk_id);
}
}
/**
*******************************************************************************
*
* @brief
* This function performs does the DCT transform then Hadamard transform
* and quantization for a chroma macroblock
*
* @par Description:
* First cf4 is done on all 16 4x4 blocks of the 8x8input block
* Then hadamard transform is done on the DC coefficients
* Quantization is then performed on the 8x8 block, 4x4 wise
*
* @param[in] pu1_src
* Pointer to source sub-block
* The input is in interleaved format for two chroma planes
*
* @param[in] pu1_pred
* Pointer to prediction sub-block
* Prediction is in inter leaved format
*
* @param[in] pi2_out
* Pointer to residual sub-block
* The output will be in linear format
* The first 4 continuous locations will contain the values of DC block for U
* and then next 4 will contain for V.
* After DC block and a stride 1st AC block of U plane will follow
* After one more stride next AC block of V plane will follow
* The blocks will be in raster scan order
*
* After all the AC blocks of U plane AC blocks of V plane will follow in exact
* same way
*
* @param[in] src_strd
* Source stride
*
* @param[in] pred_strd
* Prediction stride
*
* @param[in] dst_strd
* Destination stride
*
* @param[in] pu2_scale_matrix
* The quantization matrix for 4x4 transform
*
* @param[in] pu2_threshold_matrix
* Threshold matrix
*
* @param[in] u4_qbits
* 15+QP/6
*
* @param[in] u4_round_factor
* Round factor for quant
*
* @param[out] pu1_nnz
* Memory to store the non-zeros after transform
* The first byte will be the nnz od DC block for U plane
* From the next byte the AC nnzs will be storerd in raster scan order
* The fifth byte will be nnz of Dc block of V plane
* Then Ac blocks will follow
*
* @param u4_dc_flag
* Signals if Dc transform is to be done or not
* 1 -> Dc transform will be done
* 0 -> Dc transform will not be done
*
* @remarks
*
*******************************************************************************
*/
void ih264e_chroma_8x8_resi_trans_dctrans_quant(codec_t *ps_codec,
UWORD8 *pu1_src,
UWORD8 *pu1_pred,
WORD16 *pi2_out,
WORD32 src_strd,
WORD32 pred_strd,
WORD32 out_strd,
const UWORD16 *pu2_scale_matrix,
const UWORD16 *pu2_threshold_matrix,
UWORD32 u4_qbits,
UWORD32 u4_round_factor,
UWORD8 *pu1_nnz_c)
{
WORD32 blk_cntr;
WORD32 i4_offsetx, i4_offsety;
UWORD8 *pu1_curr_src, *pu1_curr_pred;
WORD16 pi2_dc_str[8];
UWORD8 au1_dcnnz[2];
/* Move to the ac addresses */
pu1_nnz_c++;
pi2_out += out_strd;
for (blk_cntr = 0; blk_cntr < NUM_CHROMA4x4_BLOCKS_IN_MB; blk_cntr++)
{
IND2SUB_CHROMA_MB(blk_cntr, i4_offsetx, i4_offsety);
pu1_curr_src = pu1_src + i4_offsetx + i4_offsety * src_strd;
pu1_curr_pred = pu1_pred + i4_offsetx + i4_offsety * pred_strd;
/* For chroma, v plane nnz is populated from position 5 */
ps_codec->pf_resi_trans_quant_chroma_4x4(
pu1_curr_src, pu1_curr_pred,
pi2_out + blk_cntr * out_strd, src_strd, pred_strd,
pu2_scale_matrix, pu2_threshold_matrix, u4_qbits,
u4_round_factor, &pu1_nnz_c[blk_cntr + (blk_cntr > 3)],
&pi2_dc_str[blk_cntr]);
}
/* Adjust pointers to point to dc values */
pi2_out -= out_strd;
pu1_nnz_c--;
u4_qbits++;
u4_round_factor <<= 1;
ps_codec->pf_hadamard_quant_2x2_uv(pi2_dc_str, pi2_out, pu2_scale_matrix,
pu2_threshold_matrix, u4_qbits,
u4_round_factor, au1_dcnnz);
/* Copy the dc nnzs */
pu1_nnz_c[0] = au1_dcnnz[0];
pu1_nnz_c[5] = au1_dcnnz[1];
}
/**
*******************************************************************************
* @brief
* This function performs the inverse transform with process for chroma MB of H264
*
* @par Description:
* Does inverse DC transform ,inverse quantization inverse transform
*
* @param[in] pi2_src
* Input data, 16x16 size
* The input is in the form of, first 4 locations will contain DC coeffs of
* U plane, next 4 will contain DC coeffs of V plane, then AC blocks of U plane
* in raster scan order will follow, each block as linear array in raster scan order.
* After a stride next AC block will follow. After all AC blocks of U plane
* V plane AC blocks will follow in exact same order.
*
* @param[in] pu1_pred
* The predicted data, 8x16 size, U and V interleaved
*
* @param[in] pu1_out
* Output 8x16, U and V interleaved
*
* @param[in] src_strd
* Source stride
*
* @param[in] pred_strd
* input stride for prediction buffer
*
* @param[in] out_strd
* input stride for output buffer
*
* @param[in] pu2_iscale_mat
* Inverse quantization martix for 4x4 transform
*
* @param[in] pu2_weigh_mat
* weight matrix of 4x4 transform
*
* @param[in] qp_div
* QP/6
*
* @param[in] pi4_tmp
* Input temporary buffer
* needs to be at least COFF_CNT_SUB_BLK_4x4 + Number of Dc cofss for chroma * number of planes
* in size
*
* @param[in] pu4_cntrl
* Controls the transform path
* the 15 th bit will correspond to DC block of U plane , 14th will indicate the V plane Dc block
* 32-28 bits will indicate AC blocks of U plane in raster scan order
* 27-23 bits will indicate AC blocks of V plane in rater scan order
* The bit 1 implies that there is at least one non zero coeff in a block
*
* @returns
* none
*
* @remarks
*******************************************************************************
*/
void ih264e_chroma_8x8_idctrans_iquant_itrans_recon(codec_t *ps_codec,
WORD16 *pi2_src,
UWORD8 *pu1_pred,
UWORD8 *pu1_out,
WORD32 src_strd,
WORD32 pred_strd,
WORD32 out_strd,
const UWORD16 *pu2_iscale_mat,
const UWORD16 *pu2_weigh_mat,
UWORD32 qp_div,
UWORD32 u4_cntrl,
WORD32 *pi4_tmp)
{
/* Cntrl bits for 4x4 transforms
* u4_blk_cntrl : controls if a 4x4 block should be processed in ac path
* u4_dc_cntrl : controls is a 4x4 block is to be processed in dc path
* : dc block must contain only single dc coefficient
* u4_empty_blk_cntrl : control fot 4x4 block with no coeffs, ie no dc and ac
* : ie not (ac or dc)
*/
UWORD32 u4_blk_cntrl, u4_dc_cntrl, u4_empty_blk_cntrl;
/* tmp registers for block ids */
WORD32 u4_blk_id;
/* Offsets for pointers */
WORD32 i4_offset_x, i4_offset_y;
/* Pointer to 4x4 blocks */
UWORD8 *pu1_cur_4x4_prd_blk, *pu1_cur_4x4_out_blk;
/* Tmp register for pointer to dc coffs */
WORD16 *pi2_dc_src;
WORD16 i2_zero = 0;
/* Increment for dc block */
WORD32 i4_dc_inc;
/*
* Lets do the inverse transform for dc coeffs in chroma
*/
if (u4_cntrl & CNTRL_FLAG_DCBLK_MASK_CHROMA)
{
UWORD32 cntr, u4_dc_cntrl;
/* Do inv hadamard for u an v block */
ps_codec->pf_ihadamard_scaling_2x2_uv(pi2_src, pi2_src, pu2_iscale_mat,
pu2_weigh_mat, qp_div, NULL);
/*
* Update the cntrl flag
* Flag is updated as follows bits 15-11 -> u block dc bits
*/
u4_dc_cntrl = 0;
for (cntr = 0; cntr < 8; cntr++)
{
u4_dc_cntrl |= ((pi2_src[cntr] != 0) << (15 - cntr));
}
/* Mark dc bits as 1 if corresponding ac bit is 0 */
u4_dc_cntrl = (~(u4_cntrl >> 16) & u4_dc_cntrl);
/* Combine both ac and dc bits */
u4_cntrl = (u4_cntrl & CNTRL_FLAG_AC_MASK_CHROMA)
| (u4_dc_cntrl & CNTRL_FLAG_DC_MASK_CHROMA);
/* Since we populated the dc coffs, we have to read them from there */
pi2_dc_src = pi2_src;
i4_dc_inc = 1;
}
else
{
u4_cntrl = u4_cntrl & CNTRL_FLAG_AC_MASK_CHROMA;
pi2_dc_src = &i2_zero;
i4_dc_inc = 0;
}
/* Get the block bits */
u4_blk_cntrl = (u4_cntrl & CNTRL_FLAG_AC_MASK_CHROMA);
u4_dc_cntrl = (u4_cntrl & CNTRL_FLAG_DC_MASK_CHROMA) << 16;
u4_empty_blk_cntrl = (~(u4_dc_cntrl | u4_blk_cntrl)) & 0xFF000000;
/* The AC blocks starts from 2nd row */
pi2_src += src_strd;
DEQUEUE_BLKID_FROM_CONTROL(u4_dc_cntrl, u4_blk_id);
while (u4_blk_id < 8)
{
WORD32 dc_src_offset = u4_blk_id * i4_dc_inc;
IND2SUB_CHROMA_MB(u4_blk_id, i4_offset_x, i4_offset_y);
pu1_cur_4x4_prd_blk = pu1_pred + i4_offset_x + i4_offset_y * pred_strd;
pu1_cur_4x4_out_blk = pu1_out + i4_offset_x + i4_offset_y * out_strd;
ps_codec->pf_iquant_itrans_recon_chroma_4x4_dc(
pi2_dc_src + dc_src_offset, pu1_cur_4x4_prd_blk,
pu1_cur_4x4_out_blk, pred_strd, out_strd, NULL, NULL, 0,
NULL, pi2_dc_src + dc_src_offset);
/* Get next DC block to process */
DEQUEUE_BLKID_FROM_CONTROL(u4_dc_cntrl, u4_blk_id);
}
/* now process ac/mixed blocks */
DEQUEUE_BLKID_FROM_CONTROL(u4_blk_cntrl, u4_blk_id);
while (u4_blk_id < 8)
{
WORD32 i4_src_offset = src_strd * u4_blk_id;
WORD32 dc_src_offset = i4_dc_inc * u4_blk_id;
IND2SUB_CHROMA_MB(u4_blk_id, i4_offset_x, i4_offset_y);
pu1_cur_4x4_prd_blk = pu1_pred + i4_offset_x + i4_offset_y * pred_strd;
pu1_cur_4x4_out_blk = pu1_out + i4_offset_x + i4_offset_y * out_strd;
ps_codec->pf_iquant_itrans_recon_chroma_4x4(pi2_src + i4_src_offset,
pu1_cur_4x4_prd_blk,
pu1_cur_4x4_out_blk,
pred_strd, out_strd,
pu2_iscale_mat,
pu2_weigh_mat, qp_div,
(WORD16 *) pi4_tmp,
pi2_dc_src + dc_src_offset);
DEQUEUE_BLKID_FROM_CONTROL(u4_blk_cntrl, u4_blk_id);
}
/* Now process empty blocks */
DEQUEUE_BLKID_FROM_CONTROL(u4_empty_blk_cntrl, u4_blk_id);
while (u4_blk_id < 8)
{
IND2SUB_CHROMA_MB(u4_blk_id, i4_offset_x, i4_offset_y);
pu1_cur_4x4_prd_blk = pu1_pred + i4_offset_x + i4_offset_y * pred_strd;
pu1_cur_4x4_out_blk = pu1_out + i4_offset_x + i4_offset_y * out_strd;
ps_codec->pf_interleave_copy(pu1_cur_4x4_prd_blk, pu1_cur_4x4_out_blk,
pred_strd, out_strd, SIZE_4X4_BLK_VERT,
SIZE_4X4_BLK_HRZ);
DEQUEUE_BLKID_FROM_CONTROL(u4_empty_blk_cntrl, u4_blk_id);
}
}
/**
******************************************************************************
*
* @brief This function packs residue of an i16x16 luma mb for entropy coding
*
* @par Description
* An i16 macro block contains two classes of units, dc 4x4 block and
* 4x4 ac blocks. while packing the mb, the dc block is sent first, and
* the 16 ac blocks are sent next in scan order. Each and every block is
* represented by 3 parameters (nnz, significant coefficient map and the
* residue coefficients itself). If a 4x4 unit does not have any coefficients
* then only nnz is sent. Inside a 4x4 block the individual coefficients are
* sent in scan order.
*
* The first byte of each block will be nnz of the block, if it is non zero,
* a 2 byte significance map is sent. This is followed by nonzero coefficients.
* This is repeated for 1 dc + 16 ac blocks.
*
* @param[in] pi2_res_mb
* pointer to residue mb
*
* @param[in, out] pv_mb_coeff_data
* buffer pointing to packed residue coefficients
*
* @param[in] u4_res_strd
* residual block stride
*
* @param[out] u1_cbp_l
* coded block pattern luma
*
* @param[in] pu1_nnz
* number of non zero coefficients in each 4x4 unit
*
* @param[out]
* Control signal for inverse transform of 16x16 blocks
*
* @return none
*
* @ remarks
*
******************************************************************************
*/
void ih264e_pack_l_mb_i16(WORD16 *pi2_res_mb,
void **pv_mb_coeff_data,
WORD32 i4_res_strd,
UWORD8 *u1_cbp_l,
UWORD8 *pu1_nnz,
UWORD32 *pu4_cntrl)
{
/* pointer to packed sub block buffer space */
tu_sblk_coeff_data_t *ps_mb_coeff_data = (*pv_mb_coeff_data), *ps_mb_coeff_data_ac;
/* no of non zero coefficients in the current sub block */
UWORD32 u4_nnz_cnt;
/* significant coefficient map */
UWORD32 u4_s_map;
/* pointer to scanning matrix */
const UWORD8 *pu1_scan_order;
/* number of non zeros in sub block */
UWORD32 u4_nnz;
/* coeff scan order */
const UWORD8 u1_scan_order[16] = {0, 1, 4, 5, 2, 3, 6, 7, 8, 9, 12, 13, 10, 11, 14, 15};
/* temp var */
UWORD32 coeff_cnt, mask, b4,u4_cntrl=0;
/*DC and AC coeff pointers*/
WORD16 *pi2_res_mb_ac,*pi2_res_mb_dc;
/********************************************************/
/* pack dc coeff data for entropy coding */
/********************************************************/
pi2_res_mb_dc = pi2_res_mb;
pu1_scan_order = gu1_luma_scan_order_dc;
u4_nnz = *pu1_nnz;
u4_cntrl = 0;
/* write number of non zero coefficients */
ps_mb_coeff_data->i4_sig_map_nnz = u4_nnz;
if (u4_nnz)
{
for (u4_nnz_cnt = 0, coeff_cnt = 0, mask = 1, u4_s_map = 0; u4_nnz_cnt < u4_nnz; coeff_cnt++)
{
if (pi2_res_mb_dc[pu1_scan_order[coeff_cnt]])
{
/* write residue */
ps_mb_coeff_data->ai2_residue[u4_nnz_cnt++] = pi2_res_mb_dc[pu1_scan_order[coeff_cnt]];
u4_s_map |= mask;
}
mask <<= 1;
}
/* write significant coeff map */
ps_mb_coeff_data->i4_sig_map_nnz |= (u4_s_map << 16);
(*pv_mb_coeff_data) = ps_mb_coeff_data->ai2_residue + ALIGN2(u4_nnz_cnt);
u4_cntrl = 0x00008000;// Set DC bit in ctrl code
}
else
{
(*pv_mb_coeff_data) = ps_mb_coeff_data->ai2_residue;
}
/********************************************************/
/* pack ac coeff data for entropy coding */
/********************************************************/
pu1_nnz ++;
pu1_scan_order = gu1_luma_scan_order;
pi2_res_mb += i4_res_strd; /*Move to AC block*/
ps_mb_coeff_data_ac = (*pv_mb_coeff_data);
for (b4 = 0; b4 < 16; b4++)
{
ps_mb_coeff_data = (*pv_mb_coeff_data);
u4_nnz = pu1_nnz[u1_scan_order[b4]];
/* Jump according to the scan order */
pi2_res_mb_ac = pi2_res_mb + (i4_res_strd * u1_scan_order[b4]);
/*
* Since this is a i16x16 block, we should not count dc coeff on indi
* vidual 4x4 blocks to nnz. But due to the implementation of 16x16
* trans function, we add dc's nnz to u4_nnz too. Hence we adjust that
* here
*/
u4_nnz -= (pi2_res_mb_ac[0] != 0);
/* write number of non zero coefficients */
ps_mb_coeff_data->i4_sig_map_nnz = u4_nnz;
if (u4_nnz)
{
for (u4_nnz_cnt = 0, coeff_cnt = 1, mask = 1, u4_s_map = 0; u4_nnz_cnt < u4_nnz; coeff_cnt++)
{
if (pi2_res_mb_ac[pu1_scan_order[coeff_cnt]])
{
/* write residue */
ps_mb_coeff_data->ai2_residue[u4_nnz_cnt++] = pi2_res_mb_ac[pu1_scan_order[coeff_cnt]];
u4_s_map |= mask;
}
mask <<= 1;
}
/* write significant coeff map */
ps_mb_coeff_data->i4_sig_map_nnz |= (u4_s_map << 16);
(*pv_mb_coeff_data) = ps_mb_coeff_data->ai2_residue + ALIGN2(u4_nnz_cnt);
*u1_cbp_l = 15;
u4_cntrl |= (1 << (31 - u1_scan_order[b4]));
}
else
{
(*pv_mb_coeff_data) = ps_mb_coeff_data->ai2_residue;
}
}
if (!(*u1_cbp_l))
{
(*pv_mb_coeff_data) = ps_mb_coeff_data_ac;
}
/* Store the cntrl signal */
(*pu4_cntrl) = u4_cntrl;
return;
}
/**
******************************************************************************
*
* @brief This function packs residue of an p16x16 luma mb for entropy coding
*
* @par Description
* A p16x16 macro block contains two classes of units 16 4x4 ac blocks.
* while packing the mb, the dc block is sent first, and
* the 16 ac blocks are sent next in scan order. Each and every block is
* represented by 3 parameters (nnz, significant coefficient map and the
* residue coefficients itself). If a 4x4 unit does not have any coefficients
* then only nnz is sent. Inside a 4x4 block the individual coefficients are
* sent in scan order.
*
* The first byte of each block will be nnz of the block, if it is non zero,
* a 2 byte significance map is sent. This is followed by nonzero coefficients.
* This is repeated for 1 dc + 16 ac blocks.
*
* @param[in] pi2_res_mb
* pointer to residue mb
*
* @param[in, out] pv_mb_coeff_data
* buffer pointing to packed residue coefficients
*
* @param[in] i4_res_strd
* residual block stride
*
* @param[out] u1_cbp_l
* coded block pattern luma
*
* @param[in] pu1_nnz
* number of non zero coefficients in each 4x4 unit
*
* @param[out] pu4_cntrl
* Control signal for inverse transform
*
* @return none
*
* @remarks Killing coffs not yet coded
*
******************************************************************************
*/
void ih264e_pack_l_mb(WORD16 *pi2_res_mb,
void **pv_mb_coeff_data,
WORD32 i4_res_strd,
UWORD8 *u1_cbp_l,
UWORD8 *pu1_nnz,
UWORD32 u4_thres_resi,
UWORD32 *pu4_cntrl)
{
/* pointer to packed sub block buffer space */
tu_sblk_coeff_data_t *ps_mb_coeff_data, *ps_mb_coeff_data_b8, *ps_mb_coeff_data_mb;
/* no of non zero coefficients in the current sub block */
UWORD32 u4_nnz_cnt;
/* significant coefficient map */
UWORD32 u4_s_map;
/* pointer to scanning matrix */
const UWORD8 *pu1_scan_order = gu1_luma_scan_order;
/* number of non zeros in sub block */
UWORD32 u4_nnz;
/* pointer to residual sub block */
WORD16 *pi2_res_sb;
/* coeff scan order */
const UWORD8 u1_scan_order[16] = {0, 1, 4, 5, 2, 3, 6, 7, 8, 9, 12, 13, 10, 11, 14, 15};
/* coeff cost */
const UWORD8 *pu1_coeff_cost = gu1_coeff_cost;
/* temp var */
UWORD32 u4_mb_coeff_cost = 0, u4_b8_coeff_cost = 0, coeff_cnt, mask, u4_cntrl = 0, b4, b8;
/* temp var */
WORD32 i4_res_val, i4_run = -1, dcac_block;
/* When Hadamard transform is disabled, first row values are dont care, ignore them */
pi2_res_mb += i4_res_strd;
/* When Hadamard transform is disabled, first unit value is dont care, ignore this */
pu1_nnz ++;
ps_mb_coeff_data_mb = ps_mb_coeff_data_b8 = (*pv_mb_coeff_data);
/********************************************************/
/* pack coeff data for entropy coding */
/********************************************************/
for (b4 = 0; b4 < 16; b4++)
{
ps_mb_coeff_data = (*pv_mb_coeff_data);
b8 = b4 >> 2;
u4_nnz = pu1_nnz[u1_scan_order[b4]];
/* Jump according to the scan order */
pi2_res_sb = pi2_res_mb + (i4_res_strd * u1_scan_order[b4]);
/* write number of non zero coefficients */
ps_mb_coeff_data->i4_sig_map_nnz = u4_nnz;
if (u4_nnz)
{
for (u4_nnz_cnt = 0, coeff_cnt = 0, mask = 1, u4_s_map = 0; u4_nnz_cnt < u4_nnz; coeff_cnt++)
{
/* number of runs of zero before, this is used to compute coeff cost */
i4_run++;
i4_res_val = pi2_res_sb[pu1_scan_order[coeff_cnt]];
if (i4_res_val)
{
/* write residue */
ps_mb_coeff_data->ai2_residue[u4_nnz_cnt++] = i4_res_val;
u4_s_map |= mask;
if (u4_thres_resi)
{
/* compute coeff cost */
if (i4_res_val == 1 || i4_res_val == -1)
{
if (i4_run < 6)
u4_b8_coeff_cost += pu1_coeff_cost[i4_run];
}
else
u4_b8_coeff_cost += 9;
i4_run = -1;
}
}
mask <<= 1;
}
/* write significant coeff map */
ps_mb_coeff_data->i4_sig_map_nnz |= (u4_s_map << 16);
(*pv_mb_coeff_data) = ps_mb_coeff_data->ai2_residue + ALIGN2(u4_nnz_cnt);
/* cbp */
*u1_cbp_l |= (1 << b8);
/* Cntrl map for inverse transform computation
*
* If coeff_cnt is zero, it means that only nonzero was a dc coeff
* Hence we have to set the 16 - u1_scan_order[b4]) position instead
* of 31 - u1_scan_order[b4]
*/
dcac_block = (coeff_cnt == 0)?16:31;
u4_cntrl |= (1 << (dcac_block - u1_scan_order[b4]));
}
else
{
(*pv_mb_coeff_data) = ps_mb_coeff_data->ai2_residue;
}
/* Decide if the 8x8 unit has to be sent for entropy coding? */
if ((b4+1) % 4 == 0)
{
if ( u4_thres_resi && (u4_b8_coeff_cost <= LUMA_SUB_BLOCK_SKIP_THRESHOLD) &&
(*u1_cbp_l & (1 << b8)) )
{
/*
* When we want to reset the full 8x8 block, we have to reset
* both the dc and ac coeff bits hence we have the symmetric
* arrangement of bits
*/
const UWORD32 cntrl_mask_map[4] = {0xcc00cc00, 0x33003300, 0x00cc00cc, 0x00330033};
/* restore cbp */
*u1_cbp_l = (*u1_cbp_l & (~(1 << b8)));
/* correct cntrl flag */
u4_cntrl = u4_cntrl & (~cntrl_mask_map[(b4 >> 2)]);
/* correct nnz */
pu1_nnz[u1_scan_order[b4 - 3]] = 0;
pu1_nnz[u1_scan_order[b4 - 2]] = 0;
pu1_nnz[u1_scan_order[b4 - 1]] = 0;
pu1_nnz[u1_scan_order[b4]] = 0;
/* reset blk cost */
u4_b8_coeff_cost = 0;
}
if (!(*u1_cbp_l & (1 << b8)))
{
(*pv_mb_coeff_data) = ps_mb_coeff_data_b8;
}
u4_mb_coeff_cost += u4_b8_coeff_cost;
u4_b8_coeff_cost = 0;
i4_run = -1;
ps_mb_coeff_data_b8 = (*pv_mb_coeff_data);
}
}
if (u4_thres_resi && (u4_mb_coeff_cost <= LUMA_BLOCK_SKIP_THRESHOLD)
&& (*u1_cbp_l))
{
(*pv_mb_coeff_data) = ps_mb_coeff_data_mb;
*u1_cbp_l = 0;
u4_cntrl = 0;
memset(pu1_nnz, 0, 16);
}
(*pu4_cntrl) = u4_cntrl;
return;
}
/**
******************************************************************************
*
* @brief This function packs residue of an i8x8 chroma mb for entropy coding
*
* @par Description
* An i8 chroma macro block contains two classes of units, dc 2x2 block and
* 4x4 ac blocks. while packing the mb, the dc block is sent first, and
* the 4 ac blocks are sent next in scan order. Each and every block is
* represented by 3 parameters (nnz, significant coefficient map and the
* residue coefficients itself). If a 4x4 unit does not have any coefficients
* then only nnz is sent. Inside a 4x4 block the individual coefficients are
* sent in scan order.
*
* The first byte of each block will be nnz of the block, if it is non zero,
* a 2 byte significance map is sent. This is followed by nonzero coefficients.
* This is repeated for 1 dc + 4 ac blocks.
*
* @param[in] pi2_res_mb
* pointer to residue mb
*
* @param[in, out] pv_mb_coeff_data
* buffer pointing to packed residue coefficients
*
* @param[in] u4_res_strd
* residual block stride
*
* @param[out] u1_cbp_c
* coded block pattern chroma
*
* @param[in] pu1_nnz
* number of non zero coefficients in each 4x4 unit
*
* @param[out] pu1_nnz
* Control signal for inverse transform
*
* @param[in] u4_swap_uv
* Swaps the order of U and V planes in entropy bitstream
*
* @return none
*
* @ remarks
*
******************************************************************************
*/
void ih264e_pack_c_mb(WORD16 *pi2_res_mb,
void **pv_mb_coeff_data,
WORD32 i4_res_strd,
UWORD8 *u1_cbp_c,
UWORD8 *pu1_nnz,
UWORD32 u4_thres_resi,
UWORD32 *pu4_cntrl,
UWORD32 u4_swap_uv)
{
/* pointer to packed sub block buffer space */
tu_sblk_coeff_data_t *ps_mb_coeff_data = (*pv_mb_coeff_data);
tu_sblk_coeff_data_t *ps_mb_coeff_data_dc, *ps_mb_coeff_data_ac;
/* nnz pointer */
UWORD8 *pu1_nnz_ac, *pu1_nnz_dc;
/* nnz counter */
UWORD32 u4_nnz_cnt;
/* significant coefficient map */
UWORD32 u4_s_map;
/* pointer to scanning matrix */
const UWORD8 *pu1_scan_order;
/* no of non zero coefficients in the current sub block */
UWORD32 u4_nnz;
/* pointer to residual sub block, res val */
WORD16 *pi2_res_sb, i2_res_val;
/* temp var */
UWORD32 coeff_cnt, mask, b4,plane;
/* temp var */
UWORD32 u4_coeff_cost;
WORD32 i4_run;
/* coeff cost */
const UWORD8 *pu1_coeff_cost = gu1_coeff_cost;
/* pointer to packed buffer space */
UWORD32 *pu4_mb_coeff_data = NULL;
/* ac coded block pattern */
UWORD8 u1_cbp_ac;
/* Variable to store the current bit pos in cntrl variable*/
UWORD32 cntrl_pos = 0;
/********************************************************/
/* pack dc coeff data for entropy coding */
/********************************************************/
pu1_scan_order = gu1_chroma_scan_order_dc;
pi2_res_sb = pi2_res_mb;
pu1_nnz_dc = pu1_nnz;
(*pu4_cntrl) = 0;
cntrl_pos = 15;
ps_mb_coeff_data_dc = (*pv_mb_coeff_data);
/* Color space conversion between SP_UV and SP_VU
* We always assume SP_UV for all the processing
* Hence to get proper stream output we need to swap U and V channels here
*
* For that there are two paths we need to look for
* One is the path to bitstream , these variables should have the proper input
* configured UV or VU
* For the other path the inverse transform variables should have what ever ordering the
* input had
*/
if (u4_swap_uv)
{
pu1_nnz_dc += 5;/* Move to NNZ of V planve */
pi2_res_sb += 4;/* Move to DC coff of V plane */
cntrl_pos = 14; /* Control bit for V plane */
}
for (plane = 0; plane < 2; plane++)
{
ps_mb_coeff_data = (*pv_mb_coeff_data);
u4_nnz = *pu1_nnz_dc;
/* write number of non zero coefficients U/V */
ps_mb_coeff_data->i4_sig_map_nnz = u4_nnz;
if (u4_nnz)
{
for (u4_nnz_cnt = 0, coeff_cnt = 0, mask = 1, u4_s_map = 0; u4_nnz_cnt < u4_nnz; coeff_cnt++)
{
i2_res_val = pi2_res_sb[pu1_scan_order[coeff_cnt]];
if (i2_res_val)
{
/* write residue U/V */
ps_mb_coeff_data->ai2_residue[u4_nnz_cnt++] = i2_res_val;
u4_s_map |= mask;
}
mask <<= 1;
}
/* write significant coeff map U/V */
ps_mb_coeff_data->i4_sig_map_nnz |= (u4_s_map << 16);
(*pv_mb_coeff_data) = ps_mb_coeff_data->ai2_residue + ALIGN2(u4_nnz_cnt);
*u1_cbp_c = 1;
(*pu4_cntrl) |= (1 << cntrl_pos);
}
else
{
(*pv_mb_coeff_data) = ps_mb_coeff_data->ai2_residue;
}
if (u4_swap_uv)
{
cntrl_pos++; /* Control bit for U plane */
pu1_nnz_dc -= 5; /* Move to NNZ of U plane */
pi2_res_sb -= 4; /* Move to DC coff of U plane */
}
else
{
cntrl_pos--; /* Control bit for U plane */
pu1_nnz_dc += 5; /* 4 for AC NNZ and 1 for DC */
pi2_res_sb += 4; /* Move to DC coff of V plane */
}
}
/********************************************************/
/* pack ac coeff data for entropy coding */
/********************************************************/
pu1_scan_order = gu1_chroma_scan_order;
ps_mb_coeff_data_ac = (*pv_mb_coeff_data);
if (u4_swap_uv)
{
pi2_res_sb = pi2_res_mb + i4_res_strd * 5; /* Move to V plane ,ie 1dc row+ 4 ac row */
cntrl_pos = 27; /* The control bits are to be added for V bloc ie 31-4 th bit */
pu1_nnz_ac = pu1_nnz + 6;/*Move the nnz to V block NNZ 1 dc + 1dc + 4 ac */
}
else
{
pi2_res_sb = pi2_res_mb + i4_res_strd; /* Move to U plane ,ie 1dc row */
cntrl_pos = 31;
pu1_nnz_ac = pu1_nnz + 1; /* Move the nnz to V block NNZ 1 dc */
}
for (plane = 0; plane < 2; plane++)
{
pu4_mb_coeff_data = (*pv_mb_coeff_data);
u4_coeff_cost = 0;
i4_run = -1;
/* get the current cbp, so that it automatically
* gets reverted in case of zero ac values */
u1_cbp_ac = *u1_cbp_c;
for (b4 = 0; b4 < 4; b4++)
{
ps_mb_coeff_data = (*pv_mb_coeff_data);
u4_nnz = *pu1_nnz_ac;
/*
* We are scanning only ac coeffs, but the nnz is for the
* complete 4x4 block. Hence we have to discount the nnz contributed
* by the dc coefficient
*/
u4_nnz -= (pi2_res_sb[0]!=0);
/* write number of non zero coefficients U/V */
ps_mb_coeff_data->i4_sig_map_nnz = u4_nnz;
if (u4_nnz)
{
for (u4_nnz_cnt = 0, coeff_cnt = 0, mask = 1, u4_s_map = 0; u4_nnz_cnt < u4_nnz; coeff_cnt++)
{
i2_res_val = pi2_res_sb[pu1_scan_order[coeff_cnt]];
i4_run++;
if (i2_res_val)
{
/* write residue U/V */
ps_mb_coeff_data->ai2_residue[u4_nnz_cnt++] = i2_res_val;
u4_s_map |= mask;
if ( u4_thres_resi && (u4_coeff_cost < CHROMA_BLOCK_SKIP_THRESHOLD) )
{
/* compute coeff cost */
if (i2_res_val == 1 || i2_res_val == -1)
{
if (i4_run < 6)
u4_coeff_cost += pu1_coeff_cost[i4_run];
}
else
u4_coeff_cost += 9;
i4_run = -1;
}
}
mask <<= 1;
}
/* write significant coeff map U/V */
ps_mb_coeff_data->i4_sig_map_nnz |= (u4_s_map << 16);
(*pv_mb_coeff_data) = ps_mb_coeff_data->ai2_residue + ALIGN2(u4_nnz_cnt);
u1_cbp_ac = 2;
(*pu4_cntrl) |= 1 << cntrl_pos;
}
else
{
(*pv_mb_coeff_data) = ps_mb_coeff_data->ai2_residue;
}
pu1_nnz_ac++;
pi2_res_sb += i4_res_strd;
cntrl_pos--;
}
/* reset block */
if (u4_thres_resi && (u4_coeff_cost < CHROMA_BLOCK_SKIP_THRESHOLD))
{
pu4_mb_coeff_data[0] = 0;
pu4_mb_coeff_data[1] = 0;
pu4_mb_coeff_data[2] = 0;
pu4_mb_coeff_data[3] = 0;
(*pv_mb_coeff_data) = pu4_mb_coeff_data + 4;
/* Generate the control signal */
/* Zero out the current plane's AC coefficients */
(*pu4_cntrl) &= ((plane == u4_swap_uv) ? 0x0FFFFFFF : 0xF0FFFFFF);
/* Similarly do for the NNZ also */
*(pu1_nnz_ac - 4) = 0;
*(pu1_nnz_ac - 3) = 0;
*(pu1_nnz_ac - 2) = 0;
*(pu1_nnz_ac - 1) = 0;
}
else
{
*u1_cbp_c = u1_cbp_ac;
}
if (u4_swap_uv)
{
pi2_res_sb = pi2_res_mb + i4_res_strd; /* Move to V plane ,ie 1dc row+ 4 ac row + 1 dc row */
cntrl_pos = 31; /* The control bits are to be added for V bloc ie 31-4 th bit */
pu1_nnz_ac = pu1_nnz + 1; /* Move the nnz to V block NNZ 1 dc + 1dc + 4 ac */
pu1_nnz_ac = pu1_nnz + 1;
}
else
pu1_nnz_ac = pu1_nnz + 6; /* Go to nnz of V plane */
}
/* restore the ptr basing on cbp */
if (*u1_cbp_c == 0)
{
(*pv_mb_coeff_data) = ps_mb_coeff_data_dc;
}
else if (*u1_cbp_c == 1)
{
(*pv_mb_coeff_data) = ps_mb_coeff_data_ac;
}
return ;
}
/**
*******************************************************************************
*
* @brief performs luma core coding when intra mode is i16x16
*
* @par Description:
* If the current mb is to be coded as intra of mb type i16x16, the mb is first
* predicted using one of i16x16 prediction filters, basing on the intra mode
* chosen. Then, error is computed between the input blk and the estimated blk.
* This error is transformed (hierarchical transform i.e., dct followed by hada-
* -mard), quantized. The quantized coefficients are packed in scan order for
* entropy coding.
*
* @param[in] ps_proc_ctxt
* pointer to the current macro block context
*
* @returns u1_cbp_l
* coded block pattern luma
*
* @remarks none
*
*******************************************************************************
*/
UWORD8 ih264e_code_luma_intra_macroblock_16x16(process_ctxt_t *ps_proc)
{
/* Codec Context */
codec_t *ps_codec = ps_proc->ps_codec;
/* pointer to ref macro block */
UWORD8 *pu1_ref_mb = ps_proc->pu1_rec_buf_luma;
/* pointer to src macro block */
UWORD8 *pu1_curr_mb = ps_proc->pu1_src_buf_luma;
/* pointer to prediction macro block */
UWORD8 *pu1_pred_mb = NULL;
/* pointer to residual macro block */
WORD16 *pi2_res_mb = ps_proc->pi2_res_buf;
/* strides */
WORD32 i4_src_strd = ps_proc->i4_src_strd;
WORD32 i4_rec_strd = ps_proc->i4_rec_strd;
WORD32 i4_pred_strd = ps_proc->i4_pred_strd;
WORD32 i4_res_strd = ps_proc->i4_res_strd;
/* intra mode */
UWORD8 u1_intra_mode = ps_proc->u1_l_i16_mode;
/* coded block pattern */
UWORD8 u1_cbp_l = 0;
/* number of non zero coeffs*/
UWORD32 au4_nnz[5];
UWORD8 *pu1_nnz = (UWORD8 *)au4_nnz;
/*Cntrol signal for itrans*/
UWORD32 u4_cntrl;
/* quantization parameters */
quant_params_t *ps_qp_params = ps_proc->ps_qp_params[0];
/* pointer to packed mb coeff data */
void **pv_mb_coeff_data = &(ps_proc->pv_mb_coeff_data);
/* init nnz */
au4_nnz[0] = 0;
au4_nnz[1] = 0;
au4_nnz[2] = 0;
au4_nnz[3] = 0;
au4_nnz[4] = 0;
if (u1_intra_mode == PLANE_I16x16)
{
pu1_pred_mb = ps_proc->pu1_pred_mb_intra_16x16_plane;
}
else
{
pu1_pred_mb = ps_proc->pu1_pred_mb_intra_16x16;
}
/********************************************************/
/* error estimation, */
/* transform */
/* quantization */
/********************************************************/
ih264e_luma_16x16_resi_trans_dctrans_quant(ps_codec, pu1_curr_mb,
pu1_pred_mb, pi2_res_mb,
i4_src_strd, i4_pred_strd,
i4_res_strd,
ps_qp_params->pu2_scale_mat,
ps_qp_params->pu2_thres_mat,
ps_qp_params->u1_qbits,
ps_qp_params->u4_dead_zone,
pu1_nnz, ENABLE_DC_TRANSFORM);
/********************************************************/
/* pack coeff data for entropy coding */
/********************************************************/
ih264e_pack_l_mb_i16(pi2_res_mb, pv_mb_coeff_data, i4_res_strd, &u1_cbp_l,
pu1_nnz, &u4_cntrl);
/********************************************************/
/* ierror estimation, */
/* itransform */
/* iquantization */
/********************************************************/
/*
*if refernce frame is not to be computed
*we only need the right and bottom border 4x4 blocks to predict next intra
*blocks, hence only compute them
*/
if (!ps_proc->u4_compute_recon)
{
u4_cntrl &= 0x111F8000;
}
if (u4_cntrl)
{
ih264e_luma_16x16_idctrans_iquant_itrans_recon(
ps_codec, pi2_res_mb, pu1_pred_mb, pu1_ref_mb,
i4_res_strd, i4_pred_strd, i4_rec_strd,
ps_qp_params->pu2_iscale_mat,
ps_qp_params->pu2_weigh_mat, ps_qp_params->u1_qp_div,
u4_cntrl, ENABLE_DC_TRANSFORM,
ps_proc->pv_scratch_buff);
}
else
{
ps_codec->pf_inter_pred_luma_copy(pu1_pred_mb, pu1_ref_mb, i4_pred_strd,
i4_rec_strd, MB_SIZE, MB_SIZE, NULL,
0);
}
return (u1_cbp_l);
}
/**
*******************************************************************************
*
* @brief performs luma core coding when intra mode is i4x4
*
* @par Description:
* If the current mb is to be coded as intra of mb type i4x4, the mb is first
* predicted using one of i4x4 prediction filters, basing on the intra mode
* chosen. Then, error is computed between the input blk and the estimated blk.
* This error is dct transformed and quantized. The quantized coefficients are
* packed in scan order for entropy coding.
*
* @param[in] ps_proc_ctxt
* pointer to the current macro block context
*
* @returns u1_cbp_l
* coded block pattern luma
*
* @remarks
* The traversal of 4x4 subblocks in the 16x16 macroblock is as per the scan order
* mentioned in h.264 specification
*
*******************************************************************************
*/
UWORD8 ih264e_code_luma_intra_macroblock_4x4(process_ctxt_t *ps_proc)
{
/* Codec Context */
codec_t *ps_codec = ps_proc->ps_codec;
/* pointer to ref macro block */
UWORD8 *pu1_ref_mb = ps_proc->pu1_rec_buf_luma;
/* pointer to src macro block */
UWORD8 *pu1_curr_mb = ps_proc->pu1_src_buf_luma;
/* pointer to prediction macro block */
UWORD8 *pu1_pred_mb = ps_proc->pu1_pred_mb;
/* pointer to residual macro block */
WORD16 *pi2_res_mb = ps_proc->pi2_res_buf;
/* strides */
WORD32 i4_src_strd = ps_proc->i4_src_strd;
WORD32 i4_rec_strd = ps_proc->i4_rec_strd;
WORD32 i4_pred_strd = ps_proc->i4_pred_strd;
/* pointer to neighbors: left, top, top-left */
UWORD8 *pu1_mb_a;
UWORD8 *pu1_mb_b;
UWORD8 *pu1_mb_c;
UWORD8 *pu1_mb_d;
/* intra mode */
UWORD8 u1_intra_mode = ps_proc->u1_l_i16_mode;
/* neighbor availability */
WORD32 i4_ngbr_avbl;
/* neighbor pels for intra prediction */
UWORD8 *pu1_ngbr_pels_i4 = ps_proc->au1_ngbr_pels;
/* coded block pattern */
UWORD8 u1_cbp_l = 0;
/* number of non zero coeffs*/
UWORD8 u1_nnz;
/* quantization parameters */
quant_params_t *ps_qp_params = ps_proc->ps_qp_params[0];
/* pointer to packed mb coeff data */
void **pv_mb_coeff_data = &(ps_proc->pv_mb_coeff_data);
/* pointer to packed mb coeff data */
tu_sblk_coeff_data_t *ps_mb_coeff_data, *ps_mb_coeff_data_b8;
/* no of non zero coefficients in the current sub block */
UWORD32 u4_nnz_cnt;
/* significant coefficient map */
UWORD32 u4_s_map;
/* pointer to scanning matrix */
const UWORD8 *pu1_scan_order = gu1_luma_scan_order;
/*Dummy variable for 4x4 trans fucntion*/
WORD16 i2_dc_dummy;
/* temp var */
UWORD32 i, b8, b4, u1_blk_x, u1_blk_y, u1_pix_x, u1_pix_y, coeff_cnt, mask;
/* Process 16 4x4 lum sub-blocks of the MB in scan order */
for (b8 = 0; b8 < 4; b8++)
{
u1_blk_x = GET_BLK_RASTER_POS_X(b8) << 3;
u1_blk_y = GET_BLK_RASTER_POS_Y(b8) << 3;
/* if in case cbp for the 8x8 block is zero, send no residue */
ps_mb_coeff_data_b8 = *pv_mb_coeff_data;
for (b4 = 0; b4 < 4; b4++)
{
/* index of pel in MB */
u1_pix_x = u1_blk_x + (GET_SUB_BLK_RASTER_POS_X(b4) << 2);
u1_pix_y = u1_blk_y + (GET_SUB_BLK_RASTER_POS_Y(b4) << 2);
/* Initialize source and reference pointers */
pu1_curr_mb = ps_proc->pu1_src_buf_luma + u1_pix_x + (u1_pix_y * i4_src_strd);
pu1_ref_mb = ps_proc->pu1_rec_buf_luma + u1_pix_x + (u1_pix_y * i4_rec_strd);
/* pointer to left of ref macro block */
pu1_mb_a = pu1_ref_mb - 1;
/* pointer to top of ref macro block */
pu1_mb_b = pu1_ref_mb - i4_rec_strd;
/* pointer to topright of ref macro block */
pu1_mb_c = pu1_mb_b + 4;
/* pointer to topleft macro block */
pu1_mb_d = pu1_mb_b - 1;
/* compute neighbor availability */
i4_ngbr_avbl = ps_proc->au1_ngbr_avbl_4x4_subblks[(b8 << 2) + b4];
/* sub block intra mode */
u1_intra_mode = ps_proc->au1_intra_luma_mb_4x4_modes[(b8 << 2) + b4];
/********************************************************/
/* gather prediction pels from neighbors for prediction */
/********************************************************/
/* left pels */
if (i4_ngbr_avbl & LEFT_MB_AVAILABLE_MASK)
{
for (i = 0; i < 4; i++)
pu1_ngbr_pels_i4[4 - 1 - i] = pu1_mb_a[i * i4_rec_strd];
}
else
{
memset(pu1_ngbr_pels_i4, 0, 4);
}
/* top pels */
if (i4_ngbr_avbl & TOP_MB_AVAILABLE_MASK)
{
memcpy(pu1_ngbr_pels_i4 + 4 + 1, pu1_mb_b, 4);
}
else
{
memset(pu1_ngbr_pels_i4 + 5, 0, 4);
}
/* top left pels */
if (i4_ngbr_avbl & TOP_LEFT_MB_AVAILABLE_MASK)
{
pu1_ngbr_pels_i4[4] = *pu1_mb_d;
}
else
{
pu1_ngbr_pels_i4[4] = 0;
}
/* top right pels */
if (i4_ngbr_avbl & TOP_RIGHT_MB_AVAILABLE_MASK)
{
memcpy(pu1_ngbr_pels_i4+8+1,pu1_mb_c,4);
}
else if (i4_ngbr_avbl & TOP_MB_AVAILABLE_MASK)
{
memset(pu1_ngbr_pels_i4+8+1,pu1_ngbr_pels_i4[8],4);
}
/********************************************************/
/* prediction */
/********************************************************/
(ps_codec->apf_intra_pred_4_l)[u1_intra_mode](pu1_ngbr_pels_i4,
pu1_pred_mb, 0,
i4_pred_strd,
i4_ngbr_avbl);
/********************************************************/
/* error estimation, */
/* transform */
/* quantization */
/********************************************************/
ps_codec->pf_resi_trans_quant_4x4(pu1_curr_mb, pu1_pred_mb,
pi2_res_mb, i4_src_strd,
i4_pred_strd,
ps_qp_params->pu2_scale_mat,
ps_qp_params->pu2_thres_mat,
ps_qp_params->u1_qbits,
ps_qp_params->u4_dead_zone,
&u1_nnz, &i2_dc_dummy);
/********************************************************/
/* pack coeff data for entropy coding */
/********************************************************/
ps_mb_coeff_data = *pv_mb_coeff_data;
/* write number of non zero coefficients */
ps_mb_coeff_data->i4_sig_map_nnz = u1_nnz;
if (u1_nnz)
{
for (u4_nnz_cnt = 0, coeff_cnt = 0, mask = 1, u4_s_map = 0; u4_nnz_cnt < u1_nnz; coeff_cnt++)
{
if (pi2_res_mb[pu1_scan_order[coeff_cnt]])
{
/* write residue */
ps_mb_coeff_data->ai2_residue[u4_nnz_cnt++] = pi2_res_mb[pu1_scan_order[coeff_cnt]];
u4_s_map |= mask;
}
mask <<= 1;
}
/* write significant coeff map */
ps_mb_coeff_data->i4_sig_map_nnz |= (u4_s_map << 16);
/* update ptr to coeff data */
(*pv_mb_coeff_data) = ps_mb_coeff_data->ai2_residue + ALIGN2(u4_nnz_cnt);
/* cbp */
u1_cbp_l |= (1 << b8);
}
else
{
(*pv_mb_coeff_data) = ps_mb_coeff_data->ai2_residue;
}
/********************************************************/
/* ierror estimation, */
/* itransform */
/* iquantization */
/********************************************************/
if (u1_nnz)
ps_codec->pf_iquant_itrans_recon_4x4(
pi2_res_mb, pu1_pred_mb, pu1_ref_mb,
/*No input stride,*/i4_pred_strd,
i4_rec_strd, ps_qp_params->pu2_iscale_mat,
ps_qp_params->pu2_weigh_mat,
ps_qp_params->u1_qp_div,
ps_proc->pv_scratch_buff, 0, 0);
else
ps_codec->pf_inter_pred_luma_copy(pu1_pred_mb, pu1_ref_mb,
i4_pred_strd, i4_rec_strd,
BLK_SIZE, BLK_SIZE, NULL,
0);
}
/* if the 8x8 block has no residue, nothing needs to be sent to entropy */
if (!(u1_cbp_l & (1 << b8)))
{
*pv_mb_coeff_data = ps_mb_coeff_data_b8;
}
}
return (u1_cbp_l);
}
/**
*******************************************************************************
*
* @brief performs luma core coding when intra mode is i4x4
*
* @par Description:
* If the current mb is to be coded as intra of mb type i4x4, the mb is first
* predicted using one of i4x4 prediction filters, basing on the intra mode
* chosen. Then, error is computed between the input blk and the estimated blk.
* This error is dct transformed and quantized. The quantized coefficients are
* packed in scan order for entropy coding.
*
* @param[in] ps_proc_ctxt
* pointer to the current macro block context
*
* @returns u1_cbp_l
* coded block pattern luma
*
* @remarks
* The traversal of 4x4 subblocks in the 16x16 macroblock is as per the scan order
* mentioned in h.264 specification
*
*******************************************************************************
*/
UWORD8 ih264e_code_luma_intra_macroblock_4x4_rdopt_on(process_ctxt_t *ps_proc)
{
/* Codec Context */
codec_t *ps_codec = ps_proc->ps_codec;
/* pointer to ref macro block */
UWORD8 *pu1_ref_mb_intra_4x4 = ps_proc->pu1_ref_mb_intra_4x4;
/* pointer to recon buffer */
UWORD8 *pu1_rec_mb = ps_proc->pu1_rec_buf_luma;
/* pointer to residual macro block */
WORD16 *pi2_res_mb = ps_proc->pi2_res_buf_intra_4x4;
/* strides */
WORD32 i4_rec_strd = ps_proc->i4_rec_strd;
/* number of non zero coeffs*/
UWORD8 *pu1_nnz = (UWORD8 *)ps_proc->au4_nnz_intra_4x4;
/* coded block pattern */
UWORD8 u1_cbp_l = 0;
/* pointer to packed mb coeff data */
void **pv_mb_coeff_data = &(ps_proc->pv_mb_coeff_data);
/* pointer to packed mb coeff data */
tu_sblk_coeff_data_t *ps_mb_coeff_data, *ps_mb_coeff_data_b8;
/* no of non zero coefficients in the current sub block */
UWORD32 u4_nnz_cnt;
/* significant coefficient map */
UWORD32 u4_s_map;
/* pointer to scanning matrix */
const UWORD8 *pu1_scan_order = gu1_luma_scan_order;
/* temp var */
UWORD32 b8, b4, coeff_cnt, mask;
/* Process 16 4x4 lum sub-blocks of the MB in scan order */
for (b8 = 0; b8 < 4; b8++)
{
/* if in case cbp for the 8x8 block is zero, send no residue */
ps_mb_coeff_data_b8 = *pv_mb_coeff_data;
for (b4 = 0; b4 < 4; b4++, pu1_nnz++, pi2_res_mb += MB_SIZE)
{
/********************************************************/
/* pack coeff data for entropy coding */
/********************************************************/
ps_mb_coeff_data = *pv_mb_coeff_data;
/* write number of non zero coefficients */
ps_mb_coeff_data->i4_sig_map_nnz = *pu1_nnz;
if (*pu1_nnz)
{
for (u4_nnz_cnt = 0, coeff_cnt = 0, mask = 1, u4_s_map = 0; u4_nnz_cnt < *pu1_nnz; coeff_cnt++)
{
if (pi2_res_mb[pu1_scan_order[coeff_cnt]])
{
/* write residue */
ps_mb_coeff_data->ai2_residue[u4_nnz_cnt++] = pi2_res_mb[pu1_scan_order[coeff_cnt]];
u4_s_map |= mask;
}
mask <<= 1;
}
/* write significant coeff map */
ps_mb_coeff_data->i4_sig_map_nnz |= (u4_s_map << 16);
/* update ptr to coeff data */
(*pv_mb_coeff_data) = ps_mb_coeff_data->ai2_residue + ALIGN2(u4_nnz_cnt);
/* cbp */
u1_cbp_l |= (1 << b8);
}
else
{
(*pv_mb_coeff_data) = ps_mb_coeff_data->ai2_residue;
}
}
/* if the 8x8 block has no residue, nothing needs to be sent to entropy */
if (!(u1_cbp_l & (1 << b8)))
{
*pv_mb_coeff_data = ps_mb_coeff_data_b8;
}
}
/* memcpy recon */
ps_codec->pf_inter_pred_luma_copy(pu1_ref_mb_intra_4x4, pu1_rec_mb, MB_SIZE, i4_rec_strd, MB_SIZE, MB_SIZE, NULL, 0);
return (u1_cbp_l);
}
/**
*******************************************************************************
*
* @brief performs chroma core coding for intra macro blocks
*
* @par Description:
* If the current MB is to be intra coded with mb type chroma I8x8, the MB is
* first predicted using intra 8x8 prediction filters. The predicted data is
* compared with the input for error and the error is transformed. The DC
* coefficients of each transformed sub blocks are further transformed using
* Hadamard transform. The resulting coefficients are quantized, packed and sent
* for entropy coding.
*
* @param[in] ps_proc_ctxt
* pointer to the current macro block context
*
* @returns u1_cbp_c
* coded block pattern chroma
*
* @remarks
* The traversal of 4x4 subblocks in the 8x8 macroblock is as per the scan order
* mentioned in h.264 specification
*
*******************************************************************************
*/
UWORD8 ih264e_code_chroma_intra_macroblock_8x8(process_ctxt_t *ps_proc)
{
/* Codec Context */
codec_t *ps_codec = ps_proc->ps_codec;
/* pointer to ref macro block */
UWORD8 *pu1_ref_mb = ps_proc->pu1_rec_buf_chroma;
/* pointer to src macro block */
UWORD8 *pu1_curr_mb = ps_proc->pu1_src_buf_chroma;
/* pointer to prediction macro block */
UWORD8 *pu1_pred_mb = NULL;
/* pointer to residual macro block */
WORD16 *pi2_res_mb = ps_proc->pi2_res_buf;
/* strides */
WORD32 i4_src_strd = ps_proc->i4_src_chroma_strd;
WORD32 i4_rec_strd = ps_proc->i4_rec_strd;
WORD32 i4_pred_strd = ps_proc->i4_pred_strd;
WORD32 i4_res_strd = ps_proc->i4_res_strd;
/* intra mode */
UWORD8 u1_intra_mode = ps_proc->u1_c_i8_mode;
/* coded block pattern */
UWORD8 u1_cbp_c = 0;
/* number of non zero coeffs*/
UWORD8 au1_nnz[18] = {0};
/* quantization parameters */
quant_params_t *ps_qp_params = ps_proc->ps_qp_params[1];
/* Control signal for inverse transform */
UWORD32 u4_cntrl;
/* pointer to packed mb coeff data */
void **pv_mb_coeff_data = &(ps_proc->pv_mb_coeff_data);
/* See if we need to swap U and V plances for entropy */
UWORD32 u4_swap_uv = ps_codec->s_cfg.e_inp_color_fmt == IV_YUV_420SP_VU;
if (PLANE_CH_I8x8 == u1_intra_mode)
{
pu1_pred_mb = ps_proc->pu1_pred_mb_intra_chroma_plane;
}
else
{
pu1_pred_mb = ps_proc->pu1_pred_mb_intra_chroma;
}
/********************************************************/
/* error estimation, */
/* transform */
/* quantization */
/********************************************************/
ih264e_chroma_8x8_resi_trans_dctrans_quant(ps_codec, pu1_curr_mb,
pu1_pred_mb, pi2_res_mb,
i4_src_strd, i4_pred_strd,
i4_res_strd,
ps_qp_params->pu2_scale_mat,
ps_qp_params->pu2_thres_mat,
ps_qp_params->u1_qbits,
ps_qp_params->u4_dead_zone,
au1_nnz);
/********************************************************/
/* pack coeff data for entropy coding */
/********************************************************/
ih264e_pack_c_mb(pi2_res_mb, pv_mb_coeff_data, i4_res_strd, &u1_cbp_c,
au1_nnz, ps_codec->u4_thres_resi, &u4_cntrl, u4_swap_uv);
/********************************************************/
/* ierror estimation, */
/* itransform */
/* iquantization */
/********************************************************/
ih264e_chroma_8x8_idctrans_iquant_itrans_recon(ps_codec, pi2_res_mb,
pu1_pred_mb, pu1_ref_mb,
i4_res_strd, i4_pred_strd,
i4_rec_strd,
ps_qp_params->pu2_iscale_mat,
ps_qp_params->pu2_weigh_mat,
ps_qp_params->u1_qp_div,
u4_cntrl,
ps_proc->pv_scratch_buff);
return (u1_cbp_c);
}
/**
*******************************************************************************
*
* @brief performs luma core coding when mode is inter
*
* @par Description:
* If the current mb is to be coded as inter the mb is predicted based on the
* sub mb partitions and corresponding motion vectors generated by ME. Then,
* error is computed between the input blk and the estimated blk. This error is
* transformed, quantized. The quantized coefficients are packed in scan order
* for entropy coding
*
* @param[in] ps_proc_ctxt
* pointer to the current macro block context
*
* @returns u1_cbp_l
* coded block pattern luma
*
* @remarks none
*
*******************************************************************************
*/
UWORD8 ih264e_code_luma_inter_macroblock_16x16(process_ctxt_t *ps_proc)
{
/* Codec Context */
codec_t *ps_codec = ps_proc->ps_codec;
/* pointer to ref macro block */
UWORD8 *pu1_rec_mb = ps_proc->pu1_rec_buf_luma;
/* pointer to src macro block */
UWORD8 *pu1_curr_mb = ps_proc->pu1_src_buf_luma;
/* pointer to prediction macro block */
UWORD8 *pu1_pred_mb = ps_proc->pu1_pred_mb;
/* pointer to residual macro block */
WORD16 *pi2_res_mb = ps_proc->pi2_res_buf;
/* strides */
WORD32 i4_src_strd = ps_proc->i4_src_strd;
WORD32 i4_rec_strd = ps_proc->i4_rec_strd;
WORD32 i4_pred_strd = ps_proc->i4_pred_strd;
WORD32 i4_res_strd = ps_proc->i4_res_strd;
/* coded block pattern */
UWORD8 u1_cbp_l = 0;
/*Control signal of itrans*/
UWORD32 u4_cntrl;
/* number of non zero coeffs*/
UWORD8 *pu1_nnz = (UWORD8 *)ps_proc->au4_nnz;
/* quantization parameters */
quant_params_t *ps_qp_params = ps_proc->ps_qp_params[0];
/* pointer to packed mb coeff data */
void **pv_mb_coeff_data = &(ps_proc->pv_mb_coeff_data);
/* pseudo pred buffer */
UWORD8 *pu1_pseudo_pred = pu1_pred_mb;
/* pseudo pred buffer stride */
WORD32 i4_pseudo_pred_strd = i4_pred_strd;
/* init nnz */
ps_proc->au4_nnz[0] = 0;
ps_proc->au4_nnz[1] = 0;
ps_proc->au4_nnz[2] = 0;
ps_proc->au4_nnz[3] = 0;
ps_proc->au4_nnz[4] = 0;
/********************************************************/
/* prediction */
/********************************************************/
ih264e_motion_comp_luma(ps_proc, &pu1_pseudo_pred, &i4_pseudo_pred_strd);
/********************************************************/
/* error estimation, */
/* transform */
/* quantization */
/********************************************************/
if (ps_proc->u4_min_sad_reached == 0 || ps_proc->u4_min_sad != 0)
{
ih264e_luma_16x16_resi_trans_dctrans_quant(ps_codec, pu1_curr_mb,
pu1_pseudo_pred, pi2_res_mb,
i4_src_strd,
i4_pseudo_pred_strd,
i4_res_strd,
ps_qp_params->pu2_scale_mat,
ps_qp_params->pu2_thres_mat,
ps_qp_params->u1_qbits,
ps_qp_params->u4_dead_zone,
pu1_nnz,
DISABLE_DC_TRANSFORM);
/********************************************************/
/* pack coeff data for entropy coding */
/********************************************************/
ih264e_pack_l_mb(pi2_res_mb, pv_mb_coeff_data, i4_res_strd, &u1_cbp_l,
pu1_nnz, ps_codec->u4_thres_resi, &u4_cntrl);
}
else
{
u1_cbp_l = 0;
u4_cntrl = 0;
}
/********************************************************/
/* ierror estimation, */
/* itransform */
/* iquantization */
/********************************************************/
/*If the frame is not to be used for P frame reference or dumping recon
* we only will use the reocn for only predicting intra Mbs
* THis will need only right and bottom edge 4x4 blocks recon
* Hence we selectively enable them using control signal(including DC)
*/
if (ps_proc->u4_compute_recon != 1)
{
u4_cntrl &= 0x111F0000;
}
if (u4_cntrl)
{
ih264e_luma_16x16_idctrans_iquant_itrans_recon(
ps_codec, pi2_res_mb, pu1_pseudo_pred, pu1_rec_mb,
i4_res_strd, i4_pseudo_pred_strd, i4_rec_strd,
ps_qp_params->pu2_iscale_mat,
ps_qp_params->pu2_weigh_mat, ps_qp_params->u1_qp_div,
u4_cntrl /*Cntrl*/, DISABLE_DC_TRANSFORM,
ps_proc->pv_scratch_buff);
}
else
{
ps_codec->pf_inter_pred_luma_copy(pu1_pseudo_pred, pu1_rec_mb,
i4_pseudo_pred_strd, i4_rec_strd,
MB_SIZE, MB_SIZE, NULL, 0);
}
return (u1_cbp_l);
}
/**
*******************************************************************************
*
* @brief performs chroma core coding for inter macro blocks
*
* @par Description:
* If the current mb is to be coded as inter predicted mb,based on the sub mb partitions
* and corresponding motion vectors generated by ME ,prediction is done.
* Then, error is computed between the input blk and the estimated blk.
* This error is transformed , quantized. The quantized coefficients
* are packed in scan order for
* entropy coding.
*
* @param[in] ps_proc_ctxt
* pointer to the current macro block context
*
* @returns u1_cbp_l
* coded block pattern chroma
*
* @remarks none
*
*******************************************************************************
*/
UWORD8 ih264e_code_chroma_inter_macroblock_8x8(process_ctxt_t *ps_proc)
{
/* Codec Context */
codec_t *ps_codec = ps_proc->ps_codec;
/* pointer to ref macro block */
UWORD8 *pu1_rec_mb = ps_proc->pu1_rec_buf_chroma;
/* pointer to src macro block */
UWORD8 *pu1_curr_mb = ps_proc->pu1_src_buf_chroma;
/* pointer to prediction macro block */
UWORD8 *pu1_pred_mb = ps_proc->pu1_pred_mb;
/* pointer to residual macro block */
WORD16 *pi2_res_mb = ps_proc->pi2_res_buf;
/* strides */
WORD32 i4_src_strd = ps_proc->i4_src_chroma_strd;
WORD32 i4_rec_strd = ps_proc->i4_rec_strd;
WORD32 i4_pred_strd = ps_proc->i4_pred_strd;
WORD32 i4_res_strd = ps_proc->i4_res_strd;
/* coded block pattern */
UWORD8 u1_cbp_c = 0;
/*Control signal for inverse transform*/
UWORD32 u4_cntrl;
/* number of non zero coeffs*/
UWORD8 au1_nnz[10] = {0};
/* quantization parameters */
quant_params_t *ps_qp_params = ps_proc->ps_qp_params[1];
/* pointer to packed mb coeff data */
void **pv_mb_coeff_data = &(ps_proc->pv_mb_coeff_data);
/*See if we need to swap U and V plances for entropy*/
UWORD32 u4_swap_uv = ps_codec->s_cfg.e_inp_color_fmt == IV_YUV_420SP_VU;
/********************************************************/
/* prediction */
/********************************************************/
ih264e_motion_comp_chroma(ps_proc);
/********************************************************/
/* error estimation, */
/* transform */
/* quantization */
/********************************************************/
ih264e_chroma_8x8_resi_trans_dctrans_quant(ps_codec, pu1_curr_mb,
pu1_pred_mb, pi2_res_mb,
i4_src_strd, i4_pred_strd,
i4_res_strd,
ps_qp_params->pu2_scale_mat,
ps_qp_params->pu2_thres_mat,
ps_qp_params->u1_qbits,
ps_qp_params->u4_dead_zone,
au1_nnz);
/********************************************************/
/* pack coeff data for entropy coding */
/********************************************************/
ih264e_pack_c_mb(pi2_res_mb, pv_mb_coeff_data, i4_res_strd, &u1_cbp_c,
au1_nnz, ps_codec->u4_thres_resi, &u4_cntrl, u4_swap_uv);
/********************************************************/
/* ierror estimation, */
/* itransform */
/* iquantization */
/********************************************************/
/* If the frame is not to be used for P frame reference or dumping recon
* we only will use the reocn for only predicting intra Mbs
* THis will need only right and bottom edge 4x4 blocks recon
* Hence we selectively enable them using control signal(including DC)
*/
if (!ps_proc->u4_compute_recon)
{
u4_cntrl &= 0x7700C000;
}
if (u4_cntrl)
{
ih264e_chroma_8x8_idctrans_iquant_itrans_recon(
ps_codec, pi2_res_mb, pu1_pred_mb, pu1_rec_mb,
i4_res_strd, i4_pred_strd, i4_rec_strd,
ps_qp_params->pu2_iscale_mat,
ps_qp_params->pu2_weigh_mat, ps_qp_params->u1_qp_div,
u4_cntrl, ps_proc->pv_scratch_buff);
}
else
{
ps_codec->pf_inter_pred_luma_copy(pu1_pred_mb, pu1_rec_mb, i4_pred_strd,
i4_rec_strd, MB_SIZE >> 1, MB_SIZE,
NULL, 0);
}
return (u1_cbp_c);
}