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unplugged-system/external/libavc/encoder/svc/isvce_me.c

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Initial commit: AOSP 14 with modifications for Unplugged OS
2025-10-06 13:59:42 +00:00
/******************************************************************************
*
* Copyright (C) 2022 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
* isvce_me.c
*
* @brief
* Contains definition of functions for motion estimation
*
* @author
* ittiam
*
* @par List of Functions:
* - isvce_init_mv_bits()
* - isvce_skip_analysis_chroma()
* - isvce_skip_analysis_luma()
* - isvce_analyse_skip()
* - isvce_get_search_candidates()
* - isvce_find_skip_motion_vector()
* - isvce_get_mv_predictor()
* - isvce_mv_pred()
* - isvce_mv_pred_me()
* - isvce_init_me()
* - isvce_compute_me()
* - isvce_compute_me_nmb()
*
* @remarks
* None
*
*******************************************************************************
*/
/*****************************************************************************/
/* File Includes */
/*****************************************************************************/
/* System include files */
#include <stdio.h>
#include <assert.h>
#include <limits.h>
#include <stdbool.h>
/* User include files */
#include "ih264_typedefs.h"
#include "ih264_macros.h"
#include "isvc_macros.h"
#include "ih264_platform_macros.h"
#include "iv2.h"
#include "ive2.h"
#include "ithread.h"
#include "ih264_platform_macros.h"
#include "isvc_defs.h"
#include "ime_defs.h"
#include "ime_distortion_metrics.h"
#include "ime_structs.h"
#include "isvc_structs.h"
#include "isvc_trans_quant_itrans_iquant.h"
#include "isvc_inter_pred_filters.h"
#include "isvc_mem_fns.h"
#include "ih264_padding.h"
#include "ih264_intra_pred_filters.h"
#include "ih264_deblk_edge_filters.h"
#include "isvc_cabac_tables.h"
#include "isvce_defs.h"
#include "ih264e_error.h"
#include "ih264e_bitstream.h"
#include "irc_cntrl_param.h"
#include "irc_frame_info_collector.h"
#include "isvce_rate_control.h"
#include "isvce_cabac_structs.h"
#include "isvce_structs.h"
#include "isvce_globals.h"
#include "isvce_me.h"
#include "ime.h"
#include "ih264_debug.h"
#include "ih264e_intra_modes_eval.h"
#include "isvce_core_coding.h"
#include "isvce_mc.h"
#include "ih264e_debug.h"
#include "ih264e_half_pel.h"
#include "ime_statistics.h"
#include "ih264e_platform_macros.h"
#include "isvce_defs.h"
#include "isvce_structs.h"
#include "isvce_ilp_mv_utils.h"
#include "isvce_utils.h"
/*****************************************************************************/
/* Function Definitions */
/*****************************************************************************/
/**
*******************************************************************************
*
* @brief Diamond Search
*
* @par Description:
* This function computes the sad at vertices of several layers of diamond grid
* at a time. The number of layers of diamond grid that would be evaluated is
* configurable.The function computes the sad at vertices of a diamond grid. If
* the sad at the center of the diamond grid is lesser than the sad at any other
* point of the diamond grid, the function marks the candidate Mb partition as
* mv.
*
* @param[in] ps_mb_part
* pointer to current mb partition ctxt with respect to ME
*
* @param[in] ps_me_ctxt
* pointer to me context
*
* @param[in] u4_lambda_motion
* lambda motion
*
* @param[in] u4_enable_fast_sad
* enable/disable fast sad computation
*
* @returns mv pair & corresponding distortion and cost
*
* @remarks Diamond Srch, radius is 1
*
*******************************************************************************
*/
static void isvce_diamond_search_16x16(isvce_me_ctxt_t *ps_me_ctxt, WORD32 i4_reflist)
{
/* MB partition info */
mb_part_ctxt *ps_mb_part = &ps_me_ctxt->as_mb_part[i4_reflist];
/* lagrange parameter */
UWORD32 u4_lambda_motion = ps_me_ctxt->u4_lambda_motion;
/* srch range*/
WORD32 i4_srch_range_n = ps_me_ctxt->i4_srch_range_n;
WORD32 i4_srch_range_s = ps_me_ctxt->i4_srch_range_s;
WORD32 i4_srch_range_e = ps_me_ctxt->i4_srch_range_e;
WORD32 i4_srch_range_w = ps_me_ctxt->i4_srch_range_w;
/* pointer to src macro block */
UWORD8 *pu1_curr_mb = ps_me_ctxt->pu1_src_buf_luma;
UWORD8 *pu1_ref_mb = ps_me_ctxt->apu1_ref_buf_luma[i4_reflist];
/* strides */
WORD32 i4_src_strd = ps_me_ctxt->i4_src_strd;
WORD32 i4_ref_strd = ps_me_ctxt->ai4_rec_strd[i4_reflist];
/* least cost */
WORD32 i4_cost_least = ps_mb_part->i4_mb_cost;
/* least sad */
WORD32 i4_distortion_least = ps_mb_part->i4_mb_distortion;
/* mv pair */
WORD16 i2_mvx, i2_mvy;
/* mv bits */
UWORD8 *pu1_mv_bits = ps_me_ctxt->pu1_mv_bits;
/* temp var */
WORD32 i4_cost[4];
WORD32 i4_sad[4];
UWORD8 *pu1_ref;
WORD16 i2_mv_u_x, i2_mv_u_y;
/* Diamond search Iteration Max Cnt */
WORD64 i8_num_layers = ps_me_ctxt->u4_num_layers;
/* mv with best sad during initial evaluation */
i2_mvx = ps_mb_part->s_mv_curr.i2_mvx;
i2_mvy = ps_mb_part->s_mv_curr.i2_mvy;
i2_mv_u_x = i2_mvx;
i2_mv_u_y = i2_mvy;
while(i8_num_layers--)
{
/* FIXME : is this the write way to check for out of bounds ? */
if((i2_mvx - 1 < i4_srch_range_w) || (i2_mvx + 1 > i4_srch_range_e) ||
(i2_mvy - 1 < i4_srch_range_n) || (i2_mvy + 1 > i4_srch_range_s))
{
break;
}
pu1_ref = pu1_ref_mb + i2_mvx + (i2_mvy * i4_ref_strd);
ps_me_ctxt->pf_ime_compute_sad4_diamond(pu1_ref, pu1_curr_mb, i4_ref_strd, i4_src_strd,
i4_sad);
DEBUG_SAD_HISTOGRAM_ADD(i4_sad[0], 2);
DEBUG_SAD_HISTOGRAM_ADD(i4_sad[1], 2);
DEBUG_SAD_HISTOGRAM_ADD(i4_sad[2], 2);
DEBUG_SAD_HISTOGRAM_ADD(i4_sad[3], 2);
/* compute cost */
i4_cost[0] =
i4_sad[0] +
u4_lambda_motion * (pu1_mv_bits[((i2_mvx - 1) << 2) - ps_mb_part->s_mv_pred.i2_mvx] +
pu1_mv_bits[(i2_mvy << 2) - ps_mb_part->s_mv_pred.i2_mvy]);
i4_cost[1] =
i4_sad[1] +
u4_lambda_motion * (pu1_mv_bits[((i2_mvx + 1) << 2) - ps_mb_part->s_mv_pred.i2_mvx] +
pu1_mv_bits[(i2_mvy << 2) - ps_mb_part->s_mv_pred.i2_mvy]);
i4_cost[2] =
i4_sad[2] +
u4_lambda_motion * (pu1_mv_bits[(i2_mvx << 2) - ps_mb_part->s_mv_pred.i2_mvx] +
pu1_mv_bits[((i2_mvy - 1) << 2) - ps_mb_part->s_mv_pred.i2_mvy]);
i4_cost[3] =
i4_sad[3] +
u4_lambda_motion * (pu1_mv_bits[(i2_mvx << 2) - ps_mb_part->s_mv_pred.i2_mvx] +
pu1_mv_bits[((i2_mvy + 1) << 2) - ps_mb_part->s_mv_pred.i2_mvy]);
if(i4_cost_least > i4_cost[0])
{
i4_cost_least = i4_cost[0];
i4_distortion_least = i4_sad[0];
i2_mv_u_x = (i2_mvx - 1);
i2_mv_u_y = i2_mvy;
}
if(i4_cost_least > i4_cost[1])
{
i4_cost_least = i4_cost[1];
i4_distortion_least = i4_sad[1];
i2_mv_u_x = (i2_mvx + 1);
i2_mv_u_y = i2_mvy;
}
if(i4_cost_least > i4_cost[2])
{
i4_cost_least = i4_cost[2];
i4_distortion_least = i4_sad[2];
i2_mv_u_x = i2_mvx;
i2_mv_u_y = i2_mvy - 1;
}
if(i4_cost_least > i4_cost[3])
{
i4_cost_least = i4_cost[3];
i4_distortion_least = i4_sad[3];
i2_mv_u_x = i2_mvx;
i2_mv_u_y = i2_mvy + 1;
}
if((i2_mv_u_x == i2_mvx) && (i2_mv_u_y == i2_mvy))
{
ps_mb_part->u4_exit = 1;
break;
}
else
{
i2_mvx = i2_mv_u_x;
i2_mvy = i2_mv_u_y;
}
}
if(i4_cost_least < ps_mb_part->i4_mb_cost)
{
ps_mb_part->i4_mb_cost = i4_cost_least;
ps_mb_part->i4_mb_distortion = i4_distortion_least;
ps_mb_part->s_mv_curr.i2_mvx = i2_mvx;
ps_mb_part->s_mv_curr.i2_mvy = i2_mvy;
}
}
/**
*******************************************************************************
*
* @brief This function computes the best motion vector among the tentative mv
* candidates chosen.
*
* @par Description:
* This function determines the position in the search window at which the
*motion estimation should begin in order to minimise the number of search
*iterations.
*
* @param[in] ps_mb_part
* pointer to current mb partition ctxt with respect to ME
*
* @param[in] u4_lambda_motion
* lambda motion
*
* @param[in] u4_fast_flag
* enable/disable fast sad computation
*
* @returns mv pair & corresponding distortion and cost
*
* @remarks none
*
*******************************************************************************
*/
static void isvce_evaluate_init_srchposn_16x16(isvce_me_ctxt_t *ps_me_ctxt, WORD32 i4_reflist)
{
UWORD32 u4_lambda_motion = ps_me_ctxt->u4_lambda_motion;
/* candidate mv cnt */
UWORD32 u4_num_candidates = ps_me_ctxt->u4_num_candidates[i4_reflist];
/* list of candidate mvs */
ime_mv_t *ps_mv_list = ps_me_ctxt->as_mv_init_search[i4_reflist];
/* pointer to src macro block */
UWORD8 *pu1_curr_mb = ps_me_ctxt->pu1_src_buf_luma;
UWORD8 *pu1_ref_mb = ps_me_ctxt->apu1_ref_buf_luma[i4_reflist];
/* strides */
WORD32 i4_src_strd = ps_me_ctxt->i4_src_strd;
WORD32 i4_ref_strd = ps_me_ctxt->ai4_rec_strd[i4_reflist];
/* enabled fast sad computation */
UWORD32 u4_enable_fast_sad = ps_me_ctxt->u4_enable_fast_sad;
/* SAD(distortion metric) of an 8x8 block */
WORD32 i4_mb_distortion;
/* cost = distortion + u4_lambda_motion * rate */
WORD32 i4_mb_cost, i4_mb_cost_least = INT_MAX, i4_distortion_least = INT_MAX;
/* mb partitions info */
mb_part_ctxt *ps_mb_part = &(ps_me_ctxt->as_mb_part[i4_reflist]);
/* mv bits */
UWORD8 *pu1_mv_bits = ps_me_ctxt->pu1_mv_bits;
/* temp var */
UWORD32 i, j;
WORD32 i4_srch_pos_idx = 0;
UWORD8 *pu1_ref = NULL;
/* Carry out a search using each of the motion vector pairs identified above
* as predictors. */
/* TODO : Just like Skip, Do we need to add any bias to zero mv as well */
for(i = 0; i < u4_num_candidates; i++)
{
/* compute sad */
WORD32 c_sad = 1;
for(j = 0; j < i; j++)
{
if((ps_mv_list[i].i2_mvx == ps_mv_list[j].i2_mvx) &&
(ps_mv_list[i].i2_mvy == ps_mv_list[j].i2_mvy))
{
c_sad = 0;
break;
}
}
if(c_sad)
{
/* adjust ref pointer */
pu1_ref = pu1_ref_mb + ps_mv_list[i].i2_mvx + (ps_mv_list[i].i2_mvy * i4_ref_strd);
/* compute distortion */
ps_me_ctxt->pf_ime_compute_sad_16x16[u4_enable_fast_sad](
pu1_curr_mb, pu1_ref, i4_src_strd, i4_ref_strd, i4_mb_cost_least,
&i4_mb_distortion);
DEBUG_SAD_HISTOGRAM_ADD(i4_mb_distortion, 3);
/* compute cost */
i4_mb_cost =
i4_mb_distortion +
u4_lambda_motion *
(pu1_mv_bits[(ps_mv_list[i].i2_mvx << 2) - ps_mb_part->s_mv_pred.i2_mvx] +
pu1_mv_bits[(ps_mv_list[i].i2_mvy << 2) - ps_mb_part->s_mv_pred.i2_mvy]);
if(i4_mb_cost < i4_mb_cost_least)
{
i4_mb_cost_least = i4_mb_cost;
i4_distortion_least = i4_mb_distortion;
i4_srch_pos_idx = i;
}
}
}
if(i4_mb_cost_least < ps_mb_part->i4_mb_cost)
{
ps_mb_part->i4_srch_pos_idx = i4_srch_pos_idx;
ps_mb_part->i4_mb_cost = i4_mb_cost_least;
ps_mb_part->i4_mb_distortion = i4_distortion_least;
ps_mb_part->s_mv_curr.i2_mvx = ps_mv_list[i4_srch_pos_idx].i2_mvx;
ps_mb_part->s_mv_curr.i2_mvy = ps_mv_list[i4_srch_pos_idx].i2_mvy;
}
}
/**
*******************************************************************************
*
* @brief Searches for the best matching full pixel predictor within the search
* range
*
* @par Description:
* This function begins by computing the mv predict vector for the current mb.
* This is used for cost computations. Further basing on the algo. chosen, it
* looks through a set of candidate vectors that best represent the mb a least
* cost and returns this information.
*
* @param[in] ps_proc
* pointer to current proc ctxt
*
* @param[in] ps_me_ctxt
* pointer to me context
*
* @returns mv pair & corresponding distortion and cost
*
* @remarks none
*
*******************************************************************************
*/
static void isvce_full_pel_motion_estimation_16x16(isvce_me_ctxt_t *ps_me_ctxt, WORD32 i4_ref_list)
{
/* mb part info */
mb_part_ctxt *ps_mb_part = &ps_me_ctxt->as_mb_part[i4_ref_list];
/******************************************************************/
/* Modify Search range about initial candidate instead of zero mv */
/******************************************************************/
/*
* FIXME: The motion vectors in a way can become unbounded. It may so happen
* that MV might exceed the limit of the profile configured.
*/
ps_me_ctxt->i4_srch_range_w =
MAX(ps_me_ctxt->i4_srch_range_w,
-ps_me_ctxt->ai2_srch_boundaries[0] + ps_mb_part->s_mv_curr.i2_mvx);
ps_me_ctxt->i4_srch_range_e =
MIN(ps_me_ctxt->i4_srch_range_e,
ps_me_ctxt->ai2_srch_boundaries[0] + ps_mb_part->s_mv_curr.i2_mvx);
ps_me_ctxt->i4_srch_range_n =
MAX(ps_me_ctxt->i4_srch_range_n,
-ps_me_ctxt->ai2_srch_boundaries[1] + ps_mb_part->s_mv_curr.i2_mvy);
ps_me_ctxt->i4_srch_range_s =
MIN(ps_me_ctxt->i4_srch_range_s,
ps_me_ctxt->ai2_srch_boundaries[1] + ps_mb_part->s_mv_curr.i2_mvy);
/************************************************************/
/* Traverse about best initial candidate for mv */
/************************************************************/
switch(ps_me_ctxt->u4_me_speed_preset)
{
case DMND_SRCH:
isvce_diamond_search_16x16(ps_me_ctxt, i4_ref_list);
break;
default:
assert(0);
break;
}
}
/**
*******************************************************************************
*
* @brief Searches for the best matching sub pixel predictor within the search
* range
*
* @par Description:
* This function begins by searching across all sub pixel sample points
* around the full pel motion vector. The vector with least cost is chosen as
* the mv for the current mb. If the skip mode is not evaluated while analysing
* the initial search candidates then analyse it here and update the mv.
*
* @param[in] ps_proc
* pointer to current proc ctxt
*
* @param[in] ps_me_ctxt
* pointer to me context
*
* @returns none
*
* @remarks none
*
*******************************************************************************
*/
static void isvce_sub_pel_motion_estimation_16x16(isvce_me_ctxt_t *ps_me_ctxt, WORD32 i4_reflist)
{
/* pointers to src & ref macro block */
UWORD8 *pu1_curr_mb = ps_me_ctxt->pu1_src_buf_luma;
/* pointers to ref. half pel planes */
UWORD8 *pu1_ref_mb_half_x;
UWORD8 *pu1_ref_mb_half_y;
UWORD8 *pu1_ref_mb_half_xy;
/* pointers to ref. half pel planes */
UWORD8 *pu1_ref_mb_half_x_temp;
UWORD8 *pu1_ref_mb_half_y_temp;
UWORD8 *pu1_ref_mb_half_xy_temp;
/* strides */
WORD32 i4_src_strd = ps_me_ctxt->i4_src_strd;
WORD32 i4_ref_strd = ps_me_ctxt->u4_subpel_buf_strd;
/* mb partitions info */
mb_part_ctxt *ps_mb_part = &ps_me_ctxt->as_mb_part[i4_reflist];
/* SAD(distortion metric) of an mb */
WORD32 i4_mb_distortion;
WORD32 i4_distortion_least = ps_mb_part->i4_mb_distortion;
/* cost = distortion + u4_lambda_motion * rate */
WORD32 i4_mb_cost;
WORD32 i4_mb_cost_least = ps_mb_part->i4_mb_cost;
/*Best half pel buffer*/
UWORD8 *pu1_best_hpel_buf = NULL;
/* mv bits */
UWORD8 *pu1_mv_bits = ps_me_ctxt->pu1_mv_bits;
/* Motion vectors in full-pel units */
WORD16 mv_x, mv_y;
/* lambda - lagrange constant */
UWORD32 u4_lambda_motion = ps_me_ctxt->u4_lambda_motion;
/* Flags to check if half pel points needs to be evaluated */
/**************************************/
/* 1 bit for each half pel candidate */
/* bit 0 - half x = 1, half y = 0 */
/* bit 1 - half x = -1, half y = 0 */
/* bit 2 - half x = 0, half y = 1 */
/* bit 3 - half x = 0, half y = -1 */
/* bit 4 - half x = 1, half y = 1 */
/* bit 5 - half x = -1, half y = 1 */
/* bit 6 - half x = 1, half y = -1 */
/* bit 7 - half x = -1, half y = -1 */
/**************************************/
/* temp var */
WORD16 i2_mv_u_x, i2_mv_u_y;
WORD32 i, j;
WORD32 ai4_sad[8];
WORD32 i4_srch_pos_idx = ps_mb_part->i4_srch_pos_idx;
i2_mv_u_x = ps_mb_part->s_mv_curr.i2_mvx;
i2_mv_u_y = ps_mb_part->s_mv_curr.i2_mvy;
/************************************************************/
/* Evaluate half pel */
/************************************************************/
mv_x = ps_mb_part->s_mv_curr.i2_mvx >> 2;
mv_y = ps_mb_part->s_mv_curr.i2_mvy >> 2;
/**************************************************************/
/* ps_me_ctxt->pu1_half_x points to the half pel pixel on the */
/* left side of full pel */
/* ps_me_ctxt->pu1_half_y points to the half pel pixel on the */
/* top side of full pel */
/* ps_me_ctxt->pu1_half_xy points to the half pel pixel */
/* on the top left side of full pel */
/* for the function pf_ime_sub_pel_compute_sad_16x16 the */
/* default postions are */
/* ps_me_ctxt->pu1_half_x = right halp_pel */
/* ps_me_ctxt->pu1_half_y = bottom halp_pel */
/* ps_me_ctxt->pu1_half_xy = bottom right halp_pel */
/* Hence corresponding adjustments made here */
/**************************************************************/
pu1_ref_mb_half_x_temp = pu1_ref_mb_half_x = ps_me_ctxt->apu1_subpel_buffs[0] + 1;
pu1_ref_mb_half_y_temp = pu1_ref_mb_half_y = ps_me_ctxt->apu1_subpel_buffs[1] + 1 + i4_ref_strd;
pu1_ref_mb_half_xy_temp = pu1_ref_mb_half_xy =
ps_me_ctxt->apu1_subpel_buffs[2] + 1 + i4_ref_strd;
ps_me_ctxt->pf_ime_sub_pel_compute_sad_16x16(pu1_curr_mb, pu1_ref_mb_half_x, pu1_ref_mb_half_y,
pu1_ref_mb_half_xy, i4_src_strd, i4_ref_strd,
ai4_sad);
/* Half x plane */
for(i = 0; i < 2; i++)
{
WORD32 mv_x_tmp = (mv_x << 2) + 2;
WORD32 mv_y_tmp = (mv_y << 2);
mv_x_tmp -= (i * 4);
i4_mb_distortion = ai4_sad[i];
/* compute cost */
i4_mb_cost = i4_mb_distortion +
u4_lambda_motion * (pu1_mv_bits[mv_x_tmp - ps_mb_part->s_mv_pred.i2_mvx] +
pu1_mv_bits[mv_y_tmp - ps_mb_part->s_mv_pred.i2_mvy]);
if(i4_mb_cost < i4_mb_cost_least)
{
i4_mb_cost_least = i4_mb_cost;
i4_distortion_least = i4_mb_distortion;
i2_mv_u_x = mv_x_tmp;
i2_mv_u_y = mv_y_tmp;
ps_me_ctxt->apu1_subpel_buffs[0] = pu1_ref_mb_half_x_temp - i;
pu1_best_hpel_buf = pu1_ref_mb_half_x_temp - i;
i4_srch_pos_idx = 0;
}
}
/* Half y plane */
for(i = 0; i < 2; i++)
{
WORD32 mv_x_tmp = (mv_x << 2);
WORD32 mv_y_tmp = (mv_y << 2) + 2;
mv_y_tmp -= (i * 4);
i4_mb_distortion = ai4_sad[2 + i];
/* compute cost */
i4_mb_cost = i4_mb_distortion +
u4_lambda_motion * (pu1_mv_bits[mv_x_tmp - ps_mb_part->s_mv_pred.i2_mvx] +
pu1_mv_bits[mv_y_tmp - ps_mb_part->s_mv_pred.i2_mvy]);
if(i4_mb_cost < i4_mb_cost_least)
{
i4_mb_cost_least = i4_mb_cost;
i4_distortion_least = i4_mb_distortion;
i2_mv_u_x = mv_x_tmp;
i2_mv_u_y = mv_y_tmp;
ps_me_ctxt->apu1_subpel_buffs[1] = pu1_ref_mb_half_y_temp - i * (i4_ref_strd);
pu1_best_hpel_buf = pu1_ref_mb_half_y_temp - i * (i4_ref_strd);
i4_srch_pos_idx = 1;
}
}
/* Half xy plane */
for(j = 0; j < 2; j++)
{
for(i = 0; i < 2; i++)
{
WORD32 mv_x_tmp = (mv_x << 2) + 2;
WORD32 mv_y_tmp = (mv_y << 2) + 2;
mv_x_tmp -= (i * 4);
mv_y_tmp -= (j * 4);
i4_mb_distortion = ai4_sad[4 + i + 2 * j];
/* compute cost */
i4_mb_cost = i4_mb_distortion +
u4_lambda_motion * (pu1_mv_bits[mv_x_tmp - ps_mb_part->s_mv_pred.i2_mvx] +
pu1_mv_bits[mv_y_tmp - ps_mb_part->s_mv_pred.i2_mvy]);
if(i4_mb_cost < i4_mb_cost_least)
{
i4_mb_cost_least = i4_mb_cost;
i4_distortion_least = i4_mb_distortion;
i2_mv_u_x = mv_x_tmp;
i2_mv_u_y = mv_y_tmp;
ps_me_ctxt->apu1_subpel_buffs[2] = pu1_ref_mb_half_xy_temp - j * (i4_ref_strd) -i;
pu1_best_hpel_buf = pu1_ref_mb_half_xy_temp - j * (i4_ref_strd) -i;
i4_srch_pos_idx = 2;
}
}
}
if(i4_mb_cost_least < ps_mb_part->i4_mb_cost)
{
ps_mb_part->i4_mb_cost = i4_mb_cost_least;
ps_mb_part->i4_mb_distortion = i4_distortion_least;
ps_mb_part->s_mv_curr.i2_mvx = i2_mv_u_x;
ps_mb_part->s_mv_curr.i2_mvy = i2_mv_u_y;
ps_mb_part->pu1_best_hpel_buf = pu1_best_hpel_buf;
ps_mb_part->i4_srch_pos_idx = i4_srch_pos_idx;
}
}
/**
*******************************************************************************
*
* @brief This function computes cost of skip macroblocks
*
* @par Description:
*
* @param[in] ps_me_ctxt
* pointer to me ctxt
*
*
* @returns none
*
* @remarks
* NOTE: while computing the skip cost, do not enable early exit from compute
* sad function because, a negative bias gets added later
* Note tha the last ME candidate in me ctxt is taken as skip motion vector
*
*******************************************************************************
*/
static void isvce_compute_skip_cost(isvce_me_ctxt_t *ps_me_ctxt, ime_mv_t *ps_skip_mv,
mb_part_ctxt *ps_smb_part_info, UWORD32 u4_use_stat_sad,
WORD32 i4_reflist, WORD32 i4_is_slice_type_b)
{
/* SAD(distortion metric) of an mb */
WORD32 i4_mb_distortion;
/* cost = distortion + u4_lambda_motion * rate */
WORD32 i4_mb_cost;
/* temp var */
UWORD8 *pu1_ref = NULL;
ime_mv_t s_skip_mv;
s_skip_mv.i2_mvx = (ps_skip_mv->i2_mvx + 2) >> 2;
s_skip_mv.i2_mvy = (ps_skip_mv->i2_mvy + 2) >> 2;
/* Check if the skip mv is out of bounds or subpel */
{
/* skip mv */
ime_mv_t s_clip_skip_mv;
s_clip_skip_mv.i2_mvx =
CLIP3(ps_me_ctxt->i4_srch_range_w, ps_me_ctxt->i4_srch_range_e, s_skip_mv.i2_mvx);
s_clip_skip_mv.i2_mvy =
CLIP3(ps_me_ctxt->i4_srch_range_n, ps_me_ctxt->i4_srch_range_s, s_skip_mv.i2_mvy);
if((s_clip_skip_mv.i2_mvx != s_skip_mv.i2_mvx) ||
(s_clip_skip_mv.i2_mvy != s_skip_mv.i2_mvy) || (ps_skip_mv->i2_mvx & 0x3) ||
(ps_skip_mv->i2_mvy & 0x3))
{
return;
}
}
/* adjust ref pointer */
pu1_ref = ps_me_ctxt->apu1_ref_buf_luma[i4_reflist] + s_skip_mv.i2_mvx +
(s_skip_mv.i2_mvy * ps_me_ctxt->ai4_rec_strd[i4_reflist]);
if(u4_use_stat_sad == 1)
{
UWORD32 u4_is_nonzero;
ps_me_ctxt->pf_ime_compute_sad_stat_luma_16x16(
ps_me_ctxt->pu1_src_buf_luma, pu1_ref, ps_me_ctxt->i4_src_strd,
ps_me_ctxt->ai4_rec_strd[i4_reflist], ps_me_ctxt->pu2_sad_thrsh, &i4_mb_distortion,
&u4_is_nonzero);
if(u4_is_nonzero == 0 || i4_mb_distortion <= ps_me_ctxt->i4_min_sad)
{
ps_me_ctxt->u4_min_sad_reached = 1; /* found min sad */
ps_me_ctxt->i4_min_sad = (u4_is_nonzero == 0) ? 0 : i4_mb_distortion;
}
}
else
{
ps_me_ctxt->pf_ime_compute_sad_16x16[ps_me_ctxt->u4_enable_fast_sad](
ps_me_ctxt->pu1_src_buf_luma, pu1_ref, ps_me_ctxt->i4_src_strd,
ps_me_ctxt->ai4_rec_strd[i4_reflist], INT_MAX, &i4_mb_distortion);
if(i4_mb_distortion <= ps_me_ctxt->i4_min_sad)
{
ps_me_ctxt->i4_min_sad = i4_mb_distortion;
ps_me_ctxt->u4_min_sad_reached = 1; /* found min sad */
}
}
/* for skip mode cost & distortion are identical
* But we shall add a bias to favor skip mode.
* Doc. JVT B118 Suggests SKIP_BIAS as 16.
* TODO : Empirical analysis of SKIP_BIAS is necessary */
i4_mb_cost = i4_mb_distortion -
(ps_me_ctxt->u4_lambda_motion *
(ps_me_ctxt->i4_skip_bias[0] + ps_me_ctxt->i4_skip_bias[1] * i4_is_slice_type_b));
if(i4_mb_cost <= ps_smb_part_info->i4_mb_cost)
{
ps_smb_part_info->i4_mb_cost = i4_mb_cost;
ps_smb_part_info->i4_mb_distortion = i4_mb_distortion;
ps_smb_part_info->s_mv_curr.i2_mvx = s_skip_mv.i2_mvx;
ps_smb_part_info->s_mv_curr.i2_mvy = s_skip_mv.i2_mvy;
}
}
/**
*******************************************************************************
*
* @brief
* This function populates the length of the codewords for motion vectors in the
* range (-search range, search range) in pixels
*
* @param[in] ps_me
* Pointer to me ctxt
*
* @param[out] pu1_mv_bits
* length of the codeword for all mv's
*
* @remarks The length of the code words are derived from signed exponential
* goloumb codes.
*
*******************************************************************************
*/
void isvce_init_mv_bits(isvce_me_ctxt_t *ps_me_ctxt)
{
/* temp var */
WORD32 i, codesize = 3, diff, limit;
UWORD32 u4_code_num, u4_range;
UWORD32 u4_uev_min, u4_uev_max, u4_sev_min, u4_sev_max;
/* max srch range */
diff = MAX(DEFAULT_MAX_SRCH_RANGE_X, DEFAULT_MAX_SRCH_RANGE_Y);
/* sub pel */
diff <<= 2;
/* delta mv */
diff <<= 1;
/* codeNum for positive integer = 2x-1 : Table9-3 */
u4_code_num = (diff << 1);
/* get range of the bit string and put using put_bits() */
GETRANGE(u4_range, u4_code_num);
limit = 2 * u4_range - 1;
/* init mv bits */
ps_me_ctxt->pu1_mv_bits[0] = 1;
while(codesize < limit)
{
u4_uev_min = (1 << (codesize >> 1));
u4_uev_max = 2 * u4_uev_min - 1;
u4_sev_min = u4_uev_min >> 1;
u4_sev_max = u4_uev_max >> 1;
DEBUG("\n%d min, %d max %d codesize", u4_sev_min, u4_sev_max, codesize);
for(i = u4_sev_min; i <= (WORD32) u4_sev_max; i++)
{
ps_me_ctxt->pu1_mv_bits[-i] = ps_me_ctxt->pu1_mv_bits[i] = codesize;
}
codesize += 2;
}
}
/**
*******************************************************************************
*
* @brief Adds valid MVs as initial search candidates for motion estimation by
* cheking if it is distinct or not.
*
* @param[in] ps_search_cand
* MV to add as search candidate
*
* @param[in] ps_me_ctxt
* pointer to ME context
*
* @param[in] u4_num_candidates
* Number of inital search candidates value
*
*******************************************************************************
*/
static FORCEINLINE void isvce_add_me_init_search_cands(mv_t *ps_search_cand,
isvce_me_ctxt_t *ps_me_ctxt,
WORD32 i4_reflist,
UWORD32 *u4_num_candidates,
bool b_is_max_mv_diff_lt_4)
{
WORD32 k;
WORD32 i4_mv_x, i4_mv_y;
bool b_is_mv_identical = false;
WORD32 i4_srch_range_n = ps_me_ctxt->i4_srch_range_n;
WORD32 i4_srch_range_s = ps_me_ctxt->i4_srch_range_s;
WORD32 i4_srch_range_e = ps_me_ctxt->i4_srch_range_e;
WORD32 i4_srch_range_w = ps_me_ctxt->i4_srch_range_w;
UWORD32 u4_num_init_search_cands = u4_num_candidates[0];
i4_mv_x = (ps_search_cand->i2_mvx + 2) >> 2;
i4_mv_y = (ps_search_cand->i2_mvy + 2) >> 2;
i4_mv_x = CLIP3(i4_srch_range_w, i4_srch_range_e, i4_mv_x);
i4_mv_y = CLIP3(i4_srch_range_n, i4_srch_range_s, i4_mv_y);
if(u4_num_init_search_cands == 0)
{
b_is_mv_identical = false;
}
else
{
for(k = u4_num_init_search_cands - 1; k >= 0; k--)
{
if((ps_me_ctxt->as_mv_init_search[i4_reflist][k].i2_mvx == i4_mv_x &&
ps_me_ctxt->as_mv_init_search[i4_reflist][k].i2_mvy == i4_mv_y))
{
b_is_mv_identical = true;
}
}
}
if(!b_is_mv_identical)
{
if(USE_ILP_MV_IN_ME && ps_me_ctxt->ps_ilp_me_cands)
{
if(ps_me_ctxt->ps_ilp_me_cands->u4_num_ilp_mvs < 2 || b_is_max_mv_diff_lt_4)
{
if(u4_num_init_search_cands < MAX_CAND_IF_NUM_ILP_MV_LT_2)
{
ps_me_ctxt->as_mv_init_search[i4_reflist][u4_num_init_search_cands].i2_mvx =
i4_mv_x;
ps_me_ctxt->as_mv_init_search[i4_reflist][u4_num_init_search_cands].i2_mvy =
i4_mv_y;
u4_num_candidates[0] += 1;
}
}
else if(ps_me_ctxt->ps_ilp_me_cands->u4_num_ilp_mvs >= 2 && !b_is_max_mv_diff_lt_4)
{
if(u4_num_init_search_cands < MAX_CAND_IF_NUM_ILP_MV_GTEQ_2)
{
ps_me_ctxt->as_mv_init_search[i4_reflist][u4_num_init_search_cands].i2_mvx =
i4_mv_x;
ps_me_ctxt->as_mv_init_search[i4_reflist][u4_num_init_search_cands].i2_mvy =
i4_mv_y;
u4_num_candidates[0] += 1;
}
}
}
else
{
ps_me_ctxt->as_mv_init_search[i4_reflist][u4_num_init_search_cands].i2_mvx = i4_mv_x;
ps_me_ctxt->as_mv_init_search[i4_reflist][u4_num_init_search_cands].i2_mvy = i4_mv_y;
u4_num_candidates[0] += 1;
}
}
}
/**
*******************************************************************************
*
* @brief Determines the valid candidates for which the initial search shall
*happen. The best of these candidates is used to center the diamond pixel
*search.
*
* @par Description: The function sends the skip, (0,0), left, top and top-right
* neighbouring MBs MVs. The left, top and top-right MBs MVs are used because
* these are the same MVs that are used to form the MV predictor. This initial MV
* search candidates need not take care of slice boundaries and hence neighbor
* availability checks are not made here.
*
* @param[in] ps_left_mb_pu
* pointer to left mb motion vector info
*
* @param[in] ps_top_mb_pu
* pointer to top & top right mb motion vector info
*
* @param[in] ps_top_left_mb_pu
* pointer to top left mb motion vector info
*
* @param[out] ps_skip_mv
* pointer to skip motion vectors for the curr mb
*
* @param[in] i4_mb_x
* mb index x
*
* @param[in] i4_mb_y
* mb index y
*
* @param[in] i4_wd_mbs
* pic width in mbs
*
* @param[in] ps_motionEst
* pointer to me context
*
* @returns The list of MVs to be used of priming the full pel search and the
* number of such MVs
*
* @remarks
* Assumptions : 1. Assumes Only partition of size 16x16
*
*******************************************************************************
*/
static void isvce_get_search_candidates(isvce_process_ctxt_t *ps_proc, isvce_me_ctxt_t *ps_me_ctxt,
WORD32 i4_reflist)
{
mv_t s_zero_mv;
mv_t *ps_left_mv, *ps_top_mv, *ps_top_left_mv, *ps_top_right_mv;
UWORD32 i;
WORD32 i4_left_mode, i4_top_mode, i4_top_left_mode, i4_top_right_mode;
isvce_codec_t *ps_codec = ps_proc->ps_codec;
block_neighbors_t *ps_ngbr_avbl = ps_proc->ps_ngbr_avbl;
mb_part_ctxt *ps_mb_part = &ps_me_ctxt->as_mb_part[i4_reflist];
ilp_me_cands_t *ps_ilp_me_cands = ps_me_ctxt->ps_ilp_me_cands;
bool b_is_max_mv_diff_lt_4 = false;
WORD32 i4_mb_x = ps_proc->i4_mb_x;
WORD32 i4_cmpl_predmode = (i4_reflist == 0) ? L1 : L0;
UWORD32 u4_num_candidates = 0;
s_zero_mv.i2_mvx = 0;
s_zero_mv.i2_mvy = 0;
ps_left_mv = &ps_proc->s_nbr_info.ps_left_mb_info->as_pu->as_me_info[i4_reflist].s_mv;
ps_top_mv =
&(ps_proc->s_nbr_info.ps_top_row_mb_info + i4_mb_x)->as_pu->as_me_info[i4_reflist].s_mv;
ps_top_left_mv = &ps_proc->s_nbr_info.ps_top_row_mb_info->as_pu->as_me_info[i4_reflist].s_mv;
ps_top_right_mv =
&(ps_proc->s_nbr_info.ps_top_row_mb_info + i4_mb_x + 1)->as_pu->as_me_info[i4_reflist].s_mv;
i4_left_mode =
ps_ngbr_avbl->u1_mb_a
? (ps_proc->s_nbr_info.ps_left_mb_info->as_pu->u1_pred_mode != i4_cmpl_predmode)
: 0;
i4_top_mode = ps_ngbr_avbl->u1_mb_b
? ((ps_proc->s_nbr_info.ps_top_row_mb_info + i4_mb_x)->as_pu->u1_pred_mode !=
i4_cmpl_predmode)
: 0;
i4_top_right_mode =
ps_ngbr_avbl->u1_mb_c
? ((ps_proc->s_nbr_info.ps_top_row_mb_info + i4_mb_x + 1)->as_pu->u1_pred_mode !=
i4_cmpl_predmode)
: 0;
i4_top_left_mode =
ps_ngbr_avbl->u1_mb_d
? ((ps_proc->s_nbr_info.ps_top_row_mb_info + i4_mb_x - 1)->as_pu->u1_pred_mode !=
i4_cmpl_predmode)
: 0;
if(USE_ILP_MV_IN_ME && ps_ilp_me_cands)
{
if(ps_ilp_me_cands->u4_num_ilp_mvs >= 2)
{
b_is_max_mv_diff_lt_4 = isvce_check_max_mv_diff_lt_4(ps_ilp_me_cands, i4_reflist);
}
/* Taking ILP MV Predictor as one of the candidates */
if(ps_ilp_me_cands->u4_num_ilp_mvs < 2 || b_is_max_mv_diff_lt_4)
{
for(i = 0; i < ps_ilp_me_cands->u4_num_ilp_mvs_incl_nbrs; i++)
{
if(((ps_ilp_me_cands->ae_pred_mode[i] == ((PRED_MODE_T) i4_reflist)) ||
((ps_ilp_me_cands->ae_pred_mode[i] == BI))))
{
isvce_add_me_init_search_cands(&ps_ilp_me_cands->as_mv[i][i4_reflist].s_mv,
ps_me_ctxt, i4_reflist, &u4_num_candidates,
b_is_max_mv_diff_lt_4);
}
}
}
}
/* Taking the Top MV Predictor as one of the candidates */
if(ps_ngbr_avbl->u1_mb_b && i4_top_mode)
{
isvce_add_me_init_search_cands(ps_top_mv, ps_me_ctxt, i4_reflist, &u4_num_candidates,
b_is_max_mv_diff_lt_4);
}
/* Taking the Left MV Predictor as one of the candidates */
if(ps_ngbr_avbl->u1_mb_a && i4_left_mode)
{
isvce_add_me_init_search_cands(ps_left_mv, ps_me_ctxt, i4_reflist, &u4_num_candidates,
b_is_max_mv_diff_lt_4);
}
/********************************************************************/
/* MV Prediction */
/********************************************************************/
isvce_mv_pred_me(ps_proc, i4_reflist);
ps_mb_part->s_mv_pred.i2_mvx = ps_proc->ps_pred_mv[i4_reflist].s_mv.i2_mvx;
ps_mb_part->s_mv_pred.i2_mvy = ps_proc->ps_pred_mv[i4_reflist].s_mv.i2_mvy;
/* Get the skip motion vector */
{
ps_me_ctxt->i4_skip_type =
ps_codec->apf_find_skip_params_me[ps_proc->i4_slice_type](ps_proc, i4_reflist);
/* Taking the Skip motion vector as one of the candidates */
isvce_add_me_init_search_cands(&ps_proc->ps_skip_mv[i4_reflist].s_mv, ps_me_ctxt,
i4_reflist, &u4_num_candidates, b_is_max_mv_diff_lt_4);
if(ps_proc->i4_slice_type == BSLICE)
{
/* Taking the temporal Skip motion vector as one of the candidates */
isvce_add_me_init_search_cands(&ps_proc->ps_skip_mv[i4_reflist + 2].s_mv, ps_me_ctxt,
i4_reflist, &u4_num_candidates, b_is_max_mv_diff_lt_4);
}
}
/* Taking ILP MV Predictor as one of the candidates */
if(USE_ILP_MV_IN_ME && ps_ilp_me_cands &&
(ps_ilp_me_cands->u4_num_ilp_mvs >= 2 && !b_is_max_mv_diff_lt_4))
{
for(i = 0; i < ps_ilp_me_cands->u4_num_ilp_mvs_incl_nbrs; i++)
{
if(((ps_ilp_me_cands->ae_pred_mode[i] == ((PRED_MODE_T) i4_reflist)) ||
((ps_ilp_me_cands->ae_pred_mode[i] == BI))))
{
isvce_add_me_init_search_cands(&ps_ilp_me_cands->as_mv[i][i4_reflist].s_mv,
ps_me_ctxt, i4_reflist, &u4_num_candidates,
b_is_max_mv_diff_lt_4);
}
}
}
if(ps_ngbr_avbl->u1_mb_b && i4_top_mode)
{
/* Taking the TopRt MV Predictor as one of the candidates */
if(ps_ngbr_avbl->u1_mb_c && i4_top_right_mode)
{
isvce_add_me_init_search_cands(ps_top_right_mv, ps_me_ctxt, i4_reflist,
&u4_num_candidates, b_is_max_mv_diff_lt_4);
}
/* Taking the TopLt MV Predictor as one of the candidates */
else if(ps_ngbr_avbl->u1_mb_d && i4_top_left_mode)
{
isvce_add_me_init_search_cands(ps_top_left_mv, ps_me_ctxt, i4_reflist,
&u4_num_candidates, b_is_max_mv_diff_lt_4);
}
}
/* Taking the Zero motion vector as one of the candidates */
isvce_add_me_init_search_cands(&s_zero_mv, ps_me_ctxt, i4_reflist, &u4_num_candidates,
b_is_max_mv_diff_lt_4);
ASSERT(u4_num_candidates <= MAX_FPEL_SEARCH_CANDIDATES);
ps_me_ctxt->u4_num_candidates[i4_reflist] = u4_num_candidates;
}
/**
*******************************************************************************
*
* @brief The function computes parameters for a PSKIP MB
*
* @par Description:
* The function updates the skip motion vector and checks if the current
* MB can be a skip PSKIP mB or not
*
* @param[in] ps_proc
* Pointer to process context
*
* @param[in] u4_for_me
* Flag to indicate function is called for ME or not
*
* @param[out] i4_ref_list
* Current active refernce list
*
* @returns Flag indicating if the current MB can be marked as skip
*
* @remarks The code implements the logic as described in sec 8.4.1.2.2 in H264
* specification.
*
*******************************************************************************
*/
WORD32 isvce_find_pskip_params(isvce_process_ctxt_t *ps_proc, WORD32 i4_reflist)
{
/* left mb motion vector */
isvce_enc_pu_t *ps_left_mb_pu;
/* top mb motion vector */
isvce_enc_pu_t *ps_top_mb_pu;
/* Skip mv */
mv_t *ps_skip_mv = &ps_proc->ps_skip_mv[L0].s_mv;
UNUSED(i4_reflist);
ps_left_mb_pu = ps_proc->s_nbr_info.ps_left_mb_info->as_pu;
ps_top_mb_pu = (ps_proc->s_nbr_info.ps_top_row_mb_info + ps_proc->i4_mb_x)->as_pu;
if((!ps_proc->ps_ngbr_avbl->u1_mb_a) || (!ps_proc->ps_ngbr_avbl->u1_mb_b) ||
((ps_left_mb_pu->as_me_info[L0].i1_ref_idx == 0) &&
(ps_left_mb_pu->as_me_info[L0].s_mv.i2_mvx == 0) &&
(ps_left_mb_pu->as_me_info[L0].s_mv.i2_mvy == 0)) ||
((ps_top_mb_pu->as_me_info[L0].i1_ref_idx == 0) &&
(ps_top_mb_pu->as_me_info[L0].s_mv.i2_mvx == 0) &&
(ps_top_mb_pu->as_me_info[L0].s_mv.i2_mvy == 0)))
{
ps_skip_mv->i2_mvx = 0;
ps_skip_mv->i2_mvy = 0;
}
else
{
ps_skip_mv->i2_mvx = ps_proc->ps_pred_mv[L0].s_mv.i2_mvx;
ps_skip_mv->i2_mvy = ps_proc->ps_pred_mv[L0].s_mv.i2_mvy;
}
if((ps_proc->ps_mb_info->as_pu->as_me_info[L0].s_mv.i2_mvx == ps_skip_mv->i2_mvx) &&
(ps_proc->ps_mb_info->as_pu->as_me_info[L0].s_mv.i2_mvy == ps_skip_mv->i2_mvy))
{
return 1;
}
return 0;
}
/**
*******************************************************************************
*
* @brief The function computes parameters for a PSKIP MB
*
* @par Description:
* The function updates the skip motion vector and checks if the current
* MB can be a skip PSKIP mB or not
*
* @param[in] ps_proc
* Pointer to process context
*
* @param[in] u4_for_me
* Flag to dincate fucntion is called for ME or not
*
* @param[out] i4_ref_list
* Current active refernce list
*
* @returns Flag indicating if the current MB can be marked as skip
*
* @remarks The code implements the logic as described in sec 8.4.1.2.2 in H264
* specification.
*
*******************************************************************************
*/
WORD32 isvce_find_pskip_params_me(isvce_process_ctxt_t *ps_proc, WORD32 i4_reflist)
{
/* left mb motion vector */
isvce_enc_pu_t *ps_left_mb_pu;
/* top mb motion vector */
isvce_enc_pu_t *ps_top_mb_pu;
/* Skip mv */
mv_t *ps_skip_mv = &ps_proc->ps_skip_mv[L0].s_mv;
UNUSED(i4_reflist);
ps_left_mb_pu = ps_proc->s_nbr_info.ps_left_mb_info->as_pu;
ps_top_mb_pu = (ps_proc->s_nbr_info.ps_top_row_mb_info + ps_proc->i4_mb_x)->as_pu;
if((!ps_proc->ps_ngbr_avbl->u1_mb_a) || (!ps_proc->ps_ngbr_avbl->u1_mb_b) ||
((ps_left_mb_pu->as_me_info[L0].i1_ref_idx == 0) &&
(ps_left_mb_pu->as_me_info[L0].s_mv.i2_mvx == 0) &&
(ps_left_mb_pu->as_me_info[L0].s_mv.i2_mvy == 0)) ||
((ps_top_mb_pu->as_me_info[L0].i1_ref_idx == 0) &&
(ps_top_mb_pu->as_me_info[L0].s_mv.i2_mvx == 0) &&
(ps_top_mb_pu->as_me_info[L0].s_mv.i2_mvy == 0)))
{
ps_skip_mv->i2_mvx = 0;
ps_skip_mv->i2_mvy = 0;
}
else
{
ps_skip_mv->i2_mvx = ps_proc->ps_pred_mv[L0].s_mv.i2_mvx;
ps_skip_mv->i2_mvy = ps_proc->ps_pred_mv[L0].s_mv.i2_mvy;
}
return L0;
}
/**
*******************************************************************************
*
* @brief motion vector predictor
*
* @par Description:
* The routine calculates the motion vector predictor for a given block,
* given the candidate MV predictors.
*
* @param[in] ps_left_mb_pu
* pointer to left mb motion vector info
*
* @param[in] ps_top_row_pu
* pointer to top & top right mb motion vector info
*
* @param[out] ps_pred_mv
* pointer to candidate predictors for the current block
*
* @returns The x & y components of the MV predictor.
*
* @remarks The code implements the logic as described in sec 8.4.1.3 in H264
* specification.
* Assumptions : 1. Assumes Single reference frame
* 2. Assumes Only partition of size 16x16
*
*******************************************************************************
*/
void isvce_get_mv_predictor(isvce_enc_pu_mv_t *ps_pred_mv, isvce_enc_pu_mv_t *ps_neig_mv,
WORD32 pred_algo)
{
switch(pred_algo)
{
case 0:
/* left */
ps_pred_mv->s_mv.i2_mvx = ps_neig_mv[0].s_mv.i2_mvx;
ps_pred_mv->s_mv.i2_mvy = ps_neig_mv[0].s_mv.i2_mvy;
break;
case 1:
/* top */
ps_pred_mv->s_mv.i2_mvx = ps_neig_mv[1].s_mv.i2_mvx;
ps_pred_mv->s_mv.i2_mvy = ps_neig_mv[1].s_mv.i2_mvy;
break;
case 2:
/* top right */
ps_pred_mv->s_mv.i2_mvx = ps_neig_mv[2].s_mv.i2_mvx;
ps_pred_mv->s_mv.i2_mvy = ps_neig_mv[2].s_mv.i2_mvy;
break;
case 3:
/* median */
MEDIAN(ps_neig_mv[0].s_mv.i2_mvx, ps_neig_mv[1].s_mv.i2_mvx, ps_neig_mv[2].s_mv.i2_mvx,
ps_pred_mv->s_mv.i2_mvx);
MEDIAN(ps_neig_mv[0].s_mv.i2_mvy, ps_neig_mv[1].s_mv.i2_mvy, ps_neig_mv[2].s_mv.i2_mvy,
ps_pred_mv->s_mv.i2_mvy);
break;
default:
break;
}
}
/**
*******************************************************************************
*
* @brief This function performs MV prediction
*
* @par Description:
*
* @param[in] ps_proc
* Process context corresponding to the job
*
* @returns none
*
* @remarks none
* This function will update the MB availability since intra inter decision
* should be done before the call
*
*******************************************************************************
*/
void isvce_mv_pred(isvce_process_ctxt_t *ps_proc, WORD32 i4_slice_type)
{
isvce_enc_pu_mv_t as_pu_mv[3];
UWORD8 u1_reflist, u1_cmpl_predmode;
WORD32 i;
isvce_enc_pu_mv_t *ps_pred_mv = ps_proc->ps_pred_mv;
isvce_enc_pu_mv_t s_default_mv_info = {{0, 0}, -1};
block_neighbors_t *ps_ngbr_avbl = ps_proc->ps_ngbr_avbl;
isvce_mb_info_t *ps_top_mb = ps_proc->s_nbr_info.ps_top_row_mb_info + ps_proc->i4_mb_x;
isvce_mb_info_t *ps_top_left_mb = ps_top_mb - 1;
isvce_mb_info_t *ps_top_right_mb = ps_top_mb + 1;
isvce_mb_info_t *ps_left_mb = ps_proc->s_nbr_info.ps_left_mb_info;
UWORD8 u1_left_is_intra = ps_left_mb->u1_is_intra;
UWORD8 u1_num_ref_lists = (i4_slice_type == PSLICE) ? 1 : 2;
for(u1_reflist = 0; u1_reflist < u1_num_ref_lists; u1_reflist++)
{
WORD8 i1_cur_ref_idx = 0;
WORD32 pred_algo = 3, a, b, c;
for(i = 0; i < 3; i++)
{
as_pu_mv[i] = s_default_mv_info;
}
u1_cmpl_predmode = (u1_reflist == 0) ? L1 : L0;
/* Before performing mv prediction prepare the ngbr information and
* reset motion vectors basing on their availability */
if(ps_ngbr_avbl->u1_mb_a && (u1_left_is_intra != 1) &&
(ps_left_mb->as_pu->u1_pred_mode != u1_cmpl_predmode))
{
/* left mv */
as_pu_mv[0].s_mv = ps_left_mb->as_pu->as_me_info[u1_reflist].s_mv;
as_pu_mv[0].i1_ref_idx = ps_left_mb->as_pu->as_me_info[u1_reflist].i1_ref_idx;
/* Only left available */
if(!ps_ngbr_avbl->u1_mb_b && !ps_ngbr_avbl->u1_mb_c && !ps_ngbr_avbl->u1_mb_d)
{
as_pu_mv[1].s_mv = ps_left_mb->as_pu->as_me_info[u1_reflist].s_mv;
as_pu_mv[1].i1_ref_idx = ps_left_mb->as_pu->as_me_info[u1_reflist].i1_ref_idx;
as_pu_mv[2].s_mv = ps_left_mb->as_pu->as_me_info[u1_reflist].s_mv;
as_pu_mv[2].i1_ref_idx = ps_left_mb->as_pu->as_me_info[u1_reflist].i1_ref_idx;
}
}
if(ps_ngbr_avbl->u1_mb_b && !ps_top_mb->u1_is_intra &&
(ps_top_mb->as_pu[0].u1_pred_mode != u1_cmpl_predmode))
{
/* top mv */
as_pu_mv[1].s_mv = ps_top_mb->as_pu[0].as_me_info[u1_reflist].s_mv;
as_pu_mv[1].i1_ref_idx = ps_top_mb->as_pu[0].as_me_info[u1_reflist].i1_ref_idx;
}
if(!ps_ngbr_avbl->u1_mb_c)
{
/* top right mv - When top right partition is not available for
* prediction if top left is available use it for prediction else
* set the mv information to -1 and (0, 0)
* */
if(ps_ngbr_avbl->u1_mb_d && !ps_top_left_mb->u1_is_intra &&
(ps_top_left_mb->as_pu->u1_pred_mode != u1_cmpl_predmode))
{
as_pu_mv[2].s_mv = ps_top_left_mb->as_pu[0].as_me_info[u1_reflist].s_mv;
as_pu_mv[2].i1_ref_idx = ps_top_left_mb->as_pu[0].as_me_info[u1_reflist].i1_ref_idx;
}
}
else if(ps_top_right_mb->as_pu->u1_pred_mode != u1_cmpl_predmode &&
!ps_top_right_mb->u1_is_intra)
{
as_pu_mv[2].s_mv = ps_top_right_mb->as_pu->as_me_info[u1_reflist].s_mv;
as_pu_mv[2].i1_ref_idx = ps_top_right_mb->as_pu->as_me_info[u1_reflist].i1_ref_idx;
}
/* If only one of the candidate blocks has a reference frame equal to
* the current block then use the same block as the final predictor */
a = (as_pu_mv[0].i1_ref_idx == i1_cur_ref_idx) ? 0 : -1;
b = (as_pu_mv[1].i1_ref_idx == i1_cur_ref_idx) ? 0 : -1;
c = (as_pu_mv[2].i1_ref_idx == i1_cur_ref_idx) ? 0 : -1;
if(a == 0 && b == -1 && c == -1)
pred_algo = 0; /* LEFT */
else if(a == -1 && b == 0 && c == -1)
pred_algo = 1; /* TOP */
else if(a == -1 && b == -1 && c == 0)
pred_algo = 2;
isvce_get_mv_predictor(&ps_pred_mv[u1_reflist], &as_pu_mv[0], pred_algo);
ps_pred_mv[u1_reflist].i1_ref_idx = i1_cur_ref_idx;
}
}
/**
*******************************************************************************
*
* @brief This function approximates Pred. MV
*
* @par Description:
*
* @param[in] ps_proc
* Process context corresponding to the job
*
* @returns none
*
* @remarks none
* Motion estimation happens at nmb level. For cost calculations, mv is appro
* ximated using this function
*
*******************************************************************************
*/
void isvce_mv_pred_me(isvce_process_ctxt_t *ps_proc, WORD32 i4_ref_list)
{
isvce_enc_pu_mv_t as_pu_mv[3];
WORD32 i, a, b, c;
isvce_enc_pu_mv_t *ps_pred_mv = ps_proc->ps_pred_mv;
isvce_enc_pu_mv_t s_default_mv_info = {{0, 0}, -1};
block_neighbors_t *ps_ngbr_avbl = ps_proc->ps_ngbr_avbl;
isvce_mb_info_t *ps_top_mb = ps_proc->s_nbr_info.ps_top_row_mb_info + ps_proc->i4_mb_x;
isvce_mb_info_t *ps_top_left_mb = ps_top_mb - 1;
isvce_mb_info_t *ps_top_right_mb = ps_top_mb + 1;
isvce_mb_info_t *ps_left_mb = ps_proc->s_nbr_info.ps_left_mb_info;
WORD8 i1_cur_ref_idx = 0;
WORD32 i4_cmpl_predmode = (i4_ref_list == 0) ? L1 : L0;
WORD32 pred_algo = 3;
for(i = 0; i < 3; i++)
{
as_pu_mv[i] = s_default_mv_info;
}
if(ps_ngbr_avbl->u1_mb_a && !ps_left_mb->u1_is_intra &&
(ps_left_mb->as_pu->u1_pred_mode != i4_cmpl_predmode))
{
/* left mv */
as_pu_mv[0].s_mv = ps_left_mb->as_pu->as_me_info[i4_ref_list].s_mv;
as_pu_mv[0].i1_ref_idx = ps_left_mb->as_pu->as_me_info[i4_ref_list].i1_ref_idx;
/* Only left available */
if(!ps_ngbr_avbl->u1_mb_b && !ps_ngbr_avbl->u1_mb_c && !ps_ngbr_avbl->u1_mb_d)
{
as_pu_mv[1].s_mv = ps_left_mb->as_pu->as_me_info[i4_ref_list].s_mv;
as_pu_mv[1].i1_ref_idx = ps_left_mb->as_pu->as_me_info[i4_ref_list].i1_ref_idx;
as_pu_mv[2].s_mv = ps_left_mb->as_pu->as_me_info[i4_ref_list].s_mv;
as_pu_mv[2].i1_ref_idx = ps_left_mb->as_pu->as_me_info[i4_ref_list].i1_ref_idx;
}
}
if(ps_ngbr_avbl->u1_mb_b && !ps_top_mb->u1_is_intra &&
(ps_top_mb->as_pu->u1_pred_mode != i4_cmpl_predmode))
{
/* top mv */
as_pu_mv[1].s_mv = ps_top_mb->as_pu->as_me_info[i4_ref_list].s_mv;
as_pu_mv[1].i1_ref_idx = ps_top_mb->as_pu->as_me_info[i4_ref_list].i1_ref_idx;
}
if(!ps_ngbr_avbl->u1_mb_c)
{
/* top right mv - When top right partition is not available for
* prediction if top left is available use it for prediction else
* set the mv information to -1 and (0, 0)
* */
if(ps_ngbr_avbl->u1_mb_d && !ps_top_left_mb->u1_is_intra &&
(ps_top_left_mb->as_pu->u1_pred_mode != i4_cmpl_predmode))
{
as_pu_mv[2].s_mv = ps_top_left_mb->as_pu->as_me_info[i4_ref_list].s_mv;
as_pu_mv[2].i1_ref_idx = ps_top_left_mb->as_pu->as_me_info[i4_ref_list].i1_ref_idx;
}
}
else if(ps_top_right_mb->as_pu->u1_pred_mode != i4_cmpl_predmode &&
!ps_top_right_mb->u1_is_intra)
{
as_pu_mv[2].s_mv = ps_top_right_mb->as_pu->as_me_info[i4_ref_list].s_mv;
as_pu_mv[2].i1_ref_idx = ps_top_right_mb->as_pu->as_me_info[i4_ref_list].i1_ref_idx;
}
/* If only one of the candidate blocks has a reference frame equal to
* the current block then use the same block as the final predictor */
a = (as_pu_mv[0].i1_ref_idx == i1_cur_ref_idx) ? 0 : -1;
b = (as_pu_mv[1].i1_ref_idx == i1_cur_ref_idx) ? 0 : -1;
c = (as_pu_mv[2].i1_ref_idx == i1_cur_ref_idx) ? 0 : -1;
if(a == 0 && b == -1 && c == -1)
pred_algo = 0; /* LEFT */
else if(a == -1 && b == 0 && c == -1)
pred_algo = 1; /* TOP */
else if(a == -1 && b == -1 && c == 0)
pred_algo = 2;
isvce_get_mv_predictor(&ps_pred_mv[i4_ref_list], &as_pu_mv[0], pred_algo);
}
/**
*******************************************************************************
*
* @brief This function initializes me ctxt
*
* @par Description:
* Before dispatching the current job to me thread, the me context associated
* with the job is initialized.
*
* @param[in] ps_proc
* Process context corresponding to the job
*
* @returns none
*
* @remarks none
*
*******************************************************************************
*/
void isvce_init_me(isvce_process_ctxt_t *ps_proc)
{
isvce_me_ctxt_t *ps_me_ctxt = &ps_proc->s_me_ctxt;
isvce_codec_t *ps_codec = ps_proc->ps_codec;
ps_me_ctxt->i4_skip_bias[BSLICE] = SKIP_BIAS_B;
if(ps_codec->s_cfg.u4_num_bframes == 0)
{
ps_me_ctxt->i4_skip_bias[PSLICE] = 4 * SKIP_BIAS_P;
}
else
{
ps_me_ctxt->i4_skip_bias[PSLICE] = SKIP_BIAS_P;
}
ps_me_ctxt->pu1_src_buf_luma = ps_proc->s_src_buf_props.as_component_bufs[0].pv_data;
ps_me_ctxt->i4_src_strd = ps_proc->s_src_buf_props.as_component_bufs[0].i4_data_stride;
ps_me_ctxt->apu1_ref_buf_luma[0] = ps_proc->as_ref_buf_props[0].as_component_bufs[0].pv_data;
ps_me_ctxt->apu1_ref_buf_luma[1] = ps_proc->as_ref_buf_props[1].as_component_bufs[0].pv_data;
ps_me_ctxt->ai4_rec_strd[0] = ps_proc->as_ref_buf_props[0].as_component_bufs[0].i4_data_stride;
ps_me_ctxt->ai4_rec_strd[1] = ps_proc->as_ref_buf_props[1].as_component_bufs[0].i4_data_stride;
ps_me_ctxt->u4_lambda_motion = gu1_qp0[ps_me_ctxt->u1_mb_qp];
}
/**
*******************************************************************************
*
* @brief This function performs motion estimation for the current mb using
* single reference list
*
* @par Description:
* The current mb is compared with a list of mb's in the reference frame for
* least cost. The mb that offers least cost is chosen as predicted mb and the
* displacement of the predicted mb from index location of the current mb is
* signaled as mv. The list of the mb's that are chosen in the reference frame
* are dependent on the speed of the ME configured.
*
* @param[in] ps_proc
* Process context corresponding to the job
*
* @returns motion vector of the pred mb, sad, cost.
*
* @remarks none
*
*******************************************************************************
*/
void isvce_compute_me_single_reflist(isvce_process_ctxt_t *ps_proc)
{
mb_part_ctxt s_skip_mbpart;
/* source buffer for halp pel generation functions */
UWORD8 *pu1_hpel_src;
isvce_me_ctxt_t *ps_me_ctxt = &ps_proc->s_me_ctxt;
isvce_codec_t *ps_codec = ps_proc->ps_codec;
quant_params_t *ps_qp_params = ps_proc->ps_qp_params[0];
isa_dependent_fxns_t *ps_isa_dependent_fxns = &ps_codec->s_isa_dependent_fxns;
inter_pred_fxns_t *ps_inter_pred_fxns = &ps_isa_dependent_fxns->s_inter_pred_fxns;
ps_me_ctxt->pu2_sad_thrsh = ps_qp_params->pu2_sad_thrsh;
ASSERT(1 == MAX_REF_FRAMES_PER_PRED_DIR);
{
WORD32 rows_above, rows_below, columns_left, columns_right;
/* During evaluation for motion vectors do not search through padded regions
*/
/* Obtain number of rows and columns that are effective for computing for me
* evaluation */
rows_above = MB_SIZE + ps_proc->i4_mb_y * MB_SIZE;
rows_below = (ps_proc->i4_ht_mbs - ps_proc->i4_mb_y) * MB_SIZE;
columns_left = MB_SIZE + ps_proc->i4_mb_x * MB_SIZE;
columns_right = (ps_proc->i4_wd_mbs - ps_proc->i4_mb_x) * MB_SIZE;
/* init srch range */
/* NOTE : For now, lets limit the search range by DEFAULT_MAX_SRCH_RANGE_X /
* 2 on all sides.
*/
ps_me_ctxt->i4_srch_range_w = -MIN(columns_left, DEFAULT_MAX_SRCH_RANGE_X >> 1);
ps_me_ctxt->i4_srch_range_e = MIN(columns_right, DEFAULT_MAX_SRCH_RANGE_X >> 1);
ps_me_ctxt->i4_srch_range_n = -MIN(rows_above, DEFAULT_MAX_SRCH_RANGE_Y >> 1);
ps_me_ctxt->i4_srch_range_s = MIN(rows_below, DEFAULT_MAX_SRCH_RANGE_Y >> 1);
/* this is to facilitate fast sub pel computation with minimal loads */
ps_me_ctxt->i4_srch_range_w += 1;
ps_me_ctxt->i4_srch_range_e -= 1;
ps_me_ctxt->i4_srch_range_n += 1;
ps_me_ctxt->i4_srch_range_s -= 1;
}
/***********************************************************************
* Compute ME for list L0
***********************************************************************/
/* Init SATQD for the current list */
ps_me_ctxt->u4_min_sad_reached = 0;
ps_me_ctxt->i4_min_sad = ps_proc->ps_cur_mb->u4_min_sad;
/* Get the seed motion vector candidates */
isvce_get_search_candidates(ps_proc, ps_me_ctxt, L0);
/* ****************************************************************
*Evaluate the SKIP for current list
* ****************************************************************/
s_skip_mbpart.s_mv_curr.i2_mvx = 0;
s_skip_mbpart.s_mv_curr.i2_mvy = 0;
s_skip_mbpart.i4_mb_cost = INT_MAX;
s_skip_mbpart.i4_mb_distortion = INT_MAX;
isvce_compute_skip_cost(ps_me_ctxt, (ime_mv_t *) (&ps_proc->ps_skip_mv[L0].s_mv),
&s_skip_mbpart, ps_codec->s_cfg.u4_enable_satqd, PRED_L0,
0 /* Not a Bslice */);
s_skip_mbpart.s_mv_curr.i2_mvx <<= 2;
s_skip_mbpart.s_mv_curr.i2_mvy <<= 2;
/******************************************************************
* Evaluate ME For current list
*****************************************************************/
ps_me_ctxt->as_mb_part[L0].s_mv_curr.i2_mvx = 0;
ps_me_ctxt->as_mb_part[L0].s_mv_curr.i2_mvy = 0;
ps_me_ctxt->as_mb_part[L0].i4_mb_cost = INT_MAX;
ps_me_ctxt->as_mb_part[L0].i4_mb_distortion = INT_MAX;
/* Init Hpel */
ps_me_ctxt->as_mb_part[L0].pu1_best_hpel_buf = NULL;
/* In case we found out the minimum SAD, exit the ME eval */
if(!ps_me_ctxt->u4_min_sad_reached)
{
/* Evaluate search candidates for initial mv pt */
isvce_evaluate_init_srchposn_16x16(ps_me_ctxt, L0);
/********************************************************************/
/* full pel motion estimation */
/********************************************************************/
isvce_full_pel_motion_estimation_16x16(ps_me_ctxt, L0);
/* Scale the MV to qpel resolution */
ps_me_ctxt->as_mb_part[L0].s_mv_curr.i2_mvx <<= 2;
ps_me_ctxt->as_mb_part[L0].s_mv_curr.i2_mvy <<= 2;
if(ps_me_ctxt->u4_enable_hpel)
{
/* moving src pointer to the converged motion vector location*/
pu1_hpel_src =
ps_me_ctxt->apu1_ref_buf_luma[L0] +
(ps_me_ctxt->as_mb_part[L0].s_mv_curr.i2_mvx >> 2) +
(ps_me_ctxt->as_mb_part[L0].s_mv_curr.i2_mvy >> 2) * ps_me_ctxt->ai4_rec_strd[L0];
ps_me_ctxt->apu1_subpel_buffs[0] = ps_proc->apu1_subpel_buffs[0];
ps_me_ctxt->apu1_subpel_buffs[1] = ps_proc->apu1_subpel_buffs[1];
ps_me_ctxt->apu1_subpel_buffs[2] = ps_proc->apu1_subpel_buffs[2];
ps_me_ctxt->u4_subpel_buf_strd = HP_BUFF_WD;
/* half pel search is done for both sides of full pel,
* hence half_x of width x height = 17x16 is created
* starting from left half_x of converged full pel */
pu1_hpel_src -= 1;
/* computing half_x */
ps_codec->pf_ih264e_sixtapfilter_horz(pu1_hpel_src, ps_me_ctxt->apu1_subpel_buffs[0],
ps_me_ctxt->ai4_rec_strd[L0],
ps_me_ctxt->u4_subpel_buf_strd);
/*
* Halfpel search is done for both sides of full pel,
* hence half_y of width x height = 16x17 is created
* starting from top half_y of converged full pel
* for half_xy top_left is required
* hence it starts from pu1_hpel_src = full_pel_converged_point -
* i4_rec_strd - 1
*/
pu1_hpel_src -= ps_me_ctxt->ai4_rec_strd[L0];
/* computing half_y , and half_xy*/
ps_codec->pf_ih264e_sixtap_filter_2dvh_vert(
pu1_hpel_src, ps_me_ctxt->apu1_subpel_buffs[1], ps_me_ctxt->apu1_subpel_buffs[2],
ps_me_ctxt->ai4_rec_strd[L0], ps_me_ctxt->u4_subpel_buf_strd,
ps_proc->ai16_pred1 + 3, ps_me_ctxt->u4_subpel_buf_strd);
isvce_sub_pel_motion_estimation_16x16(ps_me_ctxt, L0);
}
}
/***********************************************************************
* If a particular skiip Mv is giving better sad, copy to the corresponding
* MBPART
* In B slices this loop should go only to PREDL1: If we found min sad
* we will go to the skip ref list only
* Have to find a way to make it without too much change or new vars
**********************************************************************/
if(s_skip_mbpart.i4_mb_cost < ps_me_ctxt->as_mb_part[L0].i4_mb_cost)
{
ps_me_ctxt->as_mb_part[L0].i4_mb_cost = s_skip_mbpart.i4_mb_cost;
ps_me_ctxt->as_mb_part[L0].i4_mb_distortion = s_skip_mbpart.i4_mb_distortion;
ps_me_ctxt->as_mb_part[L0].s_mv_curr = s_skip_mbpart.s_mv_curr;
}
else if(ps_me_ctxt->as_mb_part[L0].pu1_best_hpel_buf)
{
/* Now we have to copy the buffers */
ps_inter_pred_fxns->pf_inter_pred_luma_copy(
ps_me_ctxt->as_mb_part[L0].pu1_best_hpel_buf, ps_proc->pu1_best_subpel_buf,
ps_me_ctxt->u4_subpel_buf_strd, ps_proc->u4_bst_spel_buf_strd, MB_SIZE, MB_SIZE, NULL,
0);
}
/**********************************************************************
* Now get the minimum of MB part sads by searching over all ref lists
**********************************************************************/
ps_proc->ps_mb_info->as_pu->as_me_info[L0].s_mv.i2_mvx =
ps_me_ctxt->as_mb_part[L0].s_mv_curr.i2_mvx;
ps_proc->ps_mb_info->as_pu->as_me_info[L0].s_mv.i2_mvy =
ps_me_ctxt->as_mb_part[L0].s_mv_curr.i2_mvy;
ps_proc->ps_cur_mb->i4_mb_cost = ps_me_ctxt->as_mb_part[L0].i4_mb_cost;
ps_proc->ps_cur_mb->i4_mb_distortion = ps_me_ctxt->as_mb_part[L0].i4_mb_distortion;
ps_proc->ps_cur_mb->u4_mb_type = P16x16;
ps_proc->ps_mb_info->as_pu->u1_pred_mode = L0;
/* Mark the reflists */
ps_proc->ps_mb_info->as_pu->as_me_info[0].i1_ref_idx = 0;
ps_proc->ps_mb_info->as_pu->as_me_info[1].i1_ref_idx = -1;
/* number of partitions */
ps_proc->u4_num_sub_partitions = 1;
*(ps_proc->pu4_mb_pu_cnt) = 1;
/* position in-terms of PU */
ps_proc->ps_mb_info->as_pu->u1_pos_x_in_4x4 = 0;
ps_proc->ps_mb_info->as_pu->u1_pos_y_in_4x4 = 0;
/* PU size */
ps_proc->ps_mb_info->as_pu->u1_wd_in_4x4_m1 = 3;
ps_proc->ps_mb_info->as_pu->u1_ht_in_4x4_m1 = 3;
/* Update min sad conditions */
if(ps_me_ctxt->u4_min_sad_reached == 1)
{
ps_proc->ps_cur_mb->u4_min_sad_reached = 1;
ps_proc->ps_cur_mb->u4_min_sad = ps_me_ctxt->i4_min_sad;
}
}
/**
*******************************************************************************
*
* @brief This function performs motion estimation for the current NMB
*
* @par Description:
* Intializes input and output pointers required by the function
*isvce_compute_me and calls the function isvce_compute_me in a loop to process
*NMBs.
*
* @param[in] ps_proc
* Process context corresponding to the job
*
* @returns
*
* @remarks none
*
*******************************************************************************
*/
void isvce_compute_me_nmb(isvce_process_ctxt_t *ps_proc, UWORD32 u4_nmb_count)
{
UWORD32 u4_i;
isvce_codec_t *ps_codec = ps_proc->ps_codec;
isvce_mb_info_t *ps_mb_begin = ps_proc->ps_mb_info;
UWORD32 *pu4_mb_pu_cnt_begin = ps_proc->pu4_mb_pu_cnt;
UWORD8 *pu1_me_map = ps_proc->pu1_me_map + (ps_proc->i4_mb_y * ps_proc->i4_wd_mbs);
/* Spatial dependencies for skip are not met if nmb > 1 */
ASSERT(1 == u4_nmb_count);
if(ps_proc->i4_mb_x)
{
ps_proc->s_me_ctxt.u4_left_is_intra = ps_proc->s_nbr_info.ps_left_mb_info->u1_is_intra;
ps_proc->s_me_ctxt.u4_left_is_skip =
(ps_proc->s_nbr_info.ps_left_mb_info->u2_mb_type == PSKIP);
}
for(u4_i = 0; u4_i < u4_nmb_count; u4_i++)
{
/* Wait for ME map */
if(ps_proc->i4_mb_y > 0)
{
/* Wait for top right ME to be done */
UWORD8 *pu1_me_map_tp_rw =
ps_proc->pu1_me_map + (ps_proc->i4_mb_y - 1) * ps_proc->i4_wd_mbs;
while(1)
{
volatile UWORD8 *pu1_buf;
WORD32 idx = ps_proc->i4_mb_x + u4_i + 1;
idx = MIN(idx, (ps_proc->i4_wd_mbs - 1));
pu1_buf = pu1_me_map_tp_rw + idx;
if(*pu1_buf) break;
ithread_yield();
}
}
ps_proc->ps_skip_mv = &(ps_proc->ps_nmb_info[u4_i].as_skip_mv[0]);
ps_proc->ps_ngbr_avbl = &(ps_proc->ps_nmb_info[u4_i].s_ngbr_avbl);
ps_proc->ps_pred_mv = &(ps_proc->ps_nmb_info[u4_i].as_pred_mv[0]);
ps_proc->ps_cur_mb = &(ps_proc->ps_nmb_info[u4_i]);
ps_proc->ps_cur_mb->u4_min_sad = ps_proc->u4_min_sad;
ps_proc->ps_cur_mb->u4_min_sad_reached = 0;
ps_proc->ps_cur_mb->i4_mb_cost = INT_MAX;
ps_proc->ps_cur_mb->i4_mb_distortion = SHRT_MAX;
/* Set the best subpel buf to the correct mb so that the buffer can be
* copied */
ps_proc->pu1_best_subpel_buf = ps_proc->ps_nmb_info[u4_i].pu1_best_sub_pel_buf;
ps_proc->u4_bst_spel_buf_strd = ps_proc->ps_nmb_info[u4_i].u4_bst_spel_buf_strd;
/* Set the min sad conditions */
ps_proc->ps_cur_mb->u4_min_sad = ps_codec->u4_min_sad;
ps_proc->ps_cur_mb->u4_min_sad_reached = 0;
isvce_derive_nghbr_avbl_of_mbs(ps_proc);
isvce_init_me(ps_proc);
/* Compute ME according to slice type */
ps_codec->apf_compute_me[ps_proc->i4_slice_type](ps_proc);
/* update top and left structs */
if(u4_nmb_count > 1)
{
isvce_mb_info_t *ps_left_syn = ps_proc->s_nbr_info.ps_left_mb_info;
ps_left_syn[0] = ps_proc->ps_mb_info[0];
ps_left_syn[0].u1_is_intra = 0;
ps_left_syn[0].u2_mb_type = ps_proc->ps_cur_mb->u4_mb_type;
}
/* Copy the min sad reached info */
ps_proc->ps_nmb_info[u4_i].u4_min_sad_reached = ps_proc->ps_cur_mb->u4_min_sad_reached;
ps_proc->ps_nmb_info[u4_i].u4_min_sad = ps_proc->ps_cur_mb->u4_min_sad;
/*
* To make sure that the MV map is properly sync to the
* cache we need to do a DDB
*/
{
DATA_SYNC();
pu1_me_map[ps_proc->i4_mb_x] = 1;
}
ps_proc->i4_mb_x++;
ps_proc->s_me_ctxt.u4_left_is_intra = 0;
ps_proc->s_me_ctxt.u4_left_is_skip = (ps_proc->ps_cur_mb->u4_mb_type == PSKIP);
/* update buffers pointers */
ps_proc->s_src_buf_props.as_component_bufs[0].pv_data =
((UWORD8 *) ps_proc->s_src_buf_props.as_component_bufs[0].pv_data) + MB_SIZE;
ps_proc->s_rec_buf_props.as_component_bufs[0].pv_data =
((UWORD8 *) ps_proc->s_rec_buf_props.as_component_bufs[0].pv_data) + MB_SIZE;
ps_proc->as_ref_buf_props[0].as_component_bufs[0].pv_data =
((UWORD8 *) ps_proc->as_ref_buf_props[0].as_component_bufs[0].pv_data) + MB_SIZE;
ps_proc->as_ref_buf_props[1].as_component_bufs[0].pv_data =
((UWORD8 *) ps_proc->as_ref_buf_props[1].as_component_bufs[0].pv_data) + MB_SIZE;
/*
* Note: Although chroma mb size is 8, as the chroma buffers are
* interleaved, the stride per MB is MB_SIZE
*/
ps_proc->s_src_buf_props.as_component_bufs[1].pv_data =
((UWORD8 *) ps_proc->s_src_buf_props.as_component_bufs[1].pv_data) + MB_SIZE;
ps_proc->s_rec_buf_props.as_component_bufs[1].pv_data =
((UWORD8 *) ps_proc->s_rec_buf_props.as_component_bufs[1].pv_data) + MB_SIZE;
ps_proc->as_ref_buf_props[0].as_component_bufs[1].pv_data =
((UWORD8 *) ps_proc->as_ref_buf_props[0].as_component_bufs[1].pv_data) + MB_SIZE;
ps_proc->as_ref_buf_props[1].as_component_bufs[1].pv_data =
((UWORD8 *) ps_proc->as_ref_buf_props[1].as_component_bufs[1].pv_data) + MB_SIZE;
ps_proc->pu4_mb_pu_cnt++;
ps_proc->ps_mb_info++;
}
ps_proc->ps_mb_info = ps_mb_begin;
ps_proc->pu4_mb_pu_cnt = pu4_mb_pu_cnt_begin;
ps_proc->i4_mb_x = ps_proc->i4_mb_x - u4_nmb_count;
/* update buffers pointers */
ps_proc->s_src_buf_props.as_component_bufs[0].pv_data =
((UWORD8 *) ps_proc->s_src_buf_props.as_component_bufs[0].pv_data) - MB_SIZE * u4_nmb_count;
ps_proc->s_rec_buf_props.as_component_bufs[0].pv_data =
((UWORD8 *) ps_proc->s_rec_buf_props.as_component_bufs[0].pv_data) - MB_SIZE * u4_nmb_count;
ps_proc->as_ref_buf_props[0].as_component_bufs[0].pv_data =
((UWORD8 *) ps_proc->as_ref_buf_props[0].as_component_bufs[0].pv_data) -
MB_SIZE * u4_nmb_count;
ps_proc->as_ref_buf_props[1].as_component_bufs[0].pv_data =
((UWORD8 *) ps_proc->as_ref_buf_props[1].as_component_bufs[0].pv_data) -
MB_SIZE * u4_nmb_count;
/*
* Note: Although chroma mb size is 8, as the chroma buffers are
* interleaved, the stride per MB is MB_SIZE
*/
ps_proc->s_src_buf_props.as_component_bufs[1].pv_data =
((UWORD8 *) ps_proc->s_src_buf_props.as_component_bufs[1].pv_data) - MB_SIZE * u4_nmb_count;
ps_proc->s_rec_buf_props.as_component_bufs[1].pv_data =
((UWORD8 *) ps_proc->s_rec_buf_props.as_component_bufs[1].pv_data) - MB_SIZE * u4_nmb_count;
ps_proc->as_ref_buf_props[0].as_component_bufs[1].pv_data =
((UWORD8 *) ps_proc->as_ref_buf_props[0].as_component_bufs[1].pv_data) -
MB_SIZE * u4_nmb_count;
ps_proc->as_ref_buf_props[1].as_component_bufs[1].pv_data =
((UWORD8 *) ps_proc->as_ref_buf_props[1].as_component_bufs[1].pv_data) -
MB_SIZE * u4_nmb_count;
}
/**
*******************************************************************************
*
* @brief The function computes parameters for a BSKIP MB
*
* @par Description:
* The function updates the skip motion vector for B Mb, check if the Mb can be
* marked as skip and returns it
*
* @param[in] ps_proc
* Pointer to process context
*
* @param[in] u4_for_me
* Dummy
*
* @param[in] i4_reflist
* Dummy
*
* @returns Flag indicating if the current Mb can be skip or not
*
* @remarks
* The code implements the logic as described in sec 8.4.1.2.2
* It also computes co-located MB parmas according to sec 8.4.1.2.1
*
* Need to add condition for this fucntion to be used in ME
*
*******************************************************************************/
WORD32 isvce_find_bskip_params_me(isvce_process_ctxt_t *ps_proc, WORD32 i4_reflist)
{
/* Colzero for co-located MB */
WORD32 i4_colzeroflag;
/* motion vectors for neighbouring MBs */
isvce_enc_pu_t *ps_a_pu, *ps_c_pu, *ps_b_pu;
/* Variables to check if a particular mB is available */
WORD32 i4_a, i4_b, i4_c, i4_c_avail;
/* Mode availability, init to no modes available */
WORD32 i4_mode_avail;
/* mb neighbor availability */
block_neighbors_t *ps_ngbr_avbl = ps_proc->ps_ngbr_avbl;
/* Temp var */
WORD32 i, i4_cmpl_mode, i4_skip_type = -1;
/*
* Colocated motion vector
*/
mv_t s_mvcol;
/*
* Colocated picture idx
*/
WORD32 i4_refidxcol;
isvce_codec_t *ps_codec = ps_proc->ps_codec;
UNUSED(i4_reflist);
/**************************************************************************
*Find co-located MB parameters
* See sec 8.4.1.2.1 for reference
**************************************************************************/
{
/*
* Find the co-located Mb and update the skip and pred appropriately
* 1) Default colpic is forward ref : Table 8-6
* 2) Default mb col is current MB : Table 8-8
*/
if(ps_proc->ps_col_mb->u1_is_intra)
{
s_mvcol.i2_mvx = 0;
s_mvcol.i2_mvy = 0;
i4_refidxcol = -1;
}
else
{
if(ps_proc->ps_col_mb->as_pu->u1_pred_mode != L1)
{
s_mvcol = ps_proc->ps_col_mb->as_pu->as_me_info[L0].s_mv;
i4_refidxcol = 0;
}
else
{
s_mvcol = ps_proc->ps_col_mb->as_pu->as_me_info[L1].s_mv;
i4_refidxcol = 0;
}
}
/* RefPicList1[ 0 ] is marked as "used for short-term reference", as
* default */
i4_colzeroflag =
(!i4_refidxcol && (ABS(s_mvcol.i2_mvx) <= 1) && (ABS(s_mvcol.i2_mvy) <= 1));
}
/***************************************************************************
* Evaluating skip params : Spatial Skip
**************************************************************************/
{
/* Get the neighbouring MBS according to Section 8.4.1.2.2 */
ps_a_pu = ps_proc->s_nbr_info.ps_left_mb_info->as_pu;
ps_b_pu = ps_proc->s_nbr_info.ps_top_row_mb_info[ps_proc->i4_mb_x].as_pu;
i4_c_avail = 0;
if(ps_ngbr_avbl->u1_mb_c)
{
ps_c_pu = ps_proc->s_nbr_info.ps_top_row_mb_info[ps_proc->i4_mb_x + 1].as_pu;
i4_c_avail = 1;
}
else
{
ps_c_pu = ps_proc->s_nbr_info.ps_top_row_mb_info[ps_proc->i4_mb_x - 1].as_pu;
i4_c_avail = ps_ngbr_avbl->u1_mb_d;
}
i4_a = ps_ngbr_avbl->u1_mb_a;
i4_b = ps_ngbr_avbl->u1_mb_b;
i4_c = i4_c_avail;
/* Init to no mode avail */
i4_mode_avail = 0;
for(i = 0; i < 2; i++)
{
i4_cmpl_mode = (i == 0) ? L1 : L0;
i4_mode_avail |= (i4_a && (ps_a_pu->u1_pred_mode != i4_cmpl_mode) &&
(ps_a_pu->as_me_info[i].i1_ref_idx == 0))
<< i;
i4_mode_avail |= (i4_b && (ps_b_pu->u1_pred_mode != i4_cmpl_mode) &&
(ps_b_pu->as_me_info[i].i1_ref_idx == 0))
<< i;
i4_mode_avail |= (i4_c && (ps_c_pu->u1_pred_mode != i4_cmpl_mode) &&
(ps_c_pu->as_me_info[i].i1_ref_idx == 0))
<< i;
}
if(i4_mode_avail == 0x3 || i4_mode_avail == 0x0)
{
i4_skip_type = BI;
}
else if(i4_mode_avail == 0x1)
{
i4_skip_type = L0;
}
else if(i4_mode_avail == 0x2)
{
i4_skip_type = L1;
}
/* Update skip MV for L0 */
if((i4_mode_avail & 0x1) && (!i4_colzeroflag))
{
ps_proc->ps_skip_mv[0].s_mv.i2_mvx = ps_proc->ps_pred_mv[0].s_mv.i2_mvx;
ps_proc->ps_skip_mv[0].s_mv.i2_mvy = ps_proc->ps_pred_mv[0].s_mv.i2_mvy;
}
else
{
ps_proc->ps_skip_mv[0].s_mv.i2_mvx = 0;
ps_proc->ps_skip_mv[0].s_mv.i2_mvy = 0;
}
/* Update skip MV for L1 */
if((i4_mode_avail & 0x2) && (!i4_colzeroflag))
{
ps_proc->ps_skip_mv[1].s_mv.i2_mvx = ps_proc->ps_pred_mv[1].s_mv.i2_mvx;
ps_proc->ps_skip_mv[1].s_mv.i2_mvy = ps_proc->ps_pred_mv[1].s_mv.i2_mvy;
}
else
{
ps_proc->ps_skip_mv[1].s_mv.i2_mvx = 0;
ps_proc->ps_skip_mv[1].s_mv.i2_mvy = 0;
}
}
/***************************************************************************
* Evaluating skip params : Temporal skip
**************************************************************************/
{
svc_au_buf_t *ps_ref_pic[MAX_REF_PIC_CNT];
WORD32 i4_td, i4_tx, i4_tb, i4_dist_scale_factor;
isvce_enc_pu_mv_t *ps_skip_mv = &ps_proc->ps_skip_mv[2];
ps_ref_pic[L0] = ps_proc->aps_ref_pic[L0];
ps_ref_pic[L1] = ps_proc->aps_ref_pic[L1];
i4_tb = ps_codec->i4_poc - ps_ref_pic[L0]->i4_abs_poc;
i4_td = ps_ref_pic[L1]->i4_abs_poc - ps_ref_pic[L0]->i4_abs_poc;
i4_tb = CLIP3(-128, 127, i4_tb);
i4_td = CLIP3(-128, 127, i4_td);
i4_tx = (16384 + ABS(i4_td / 2)) / i4_td;
i4_dist_scale_factor = CLIP3(-1024, 1023, (i4_tb * i4_tx + 32) >> 6);
/* Motion vectors taken in full pel resolution , hence -> (& 0xfffc)
* operation */
ps_skip_mv[L0].s_mv.i2_mvx = ((i4_dist_scale_factor * s_mvcol.i2_mvx + 128) >> 8) & 0xfffc;
ps_skip_mv[L0].s_mv.i2_mvy = ((i4_dist_scale_factor * s_mvcol.i2_mvy + 128) >> 8) & 0xfffc;
ps_skip_mv[L1].s_mv.i2_mvx = (ps_skip_mv[L0].s_mv.i2_mvx - s_mvcol.i2_mvx) & 0xfffc;
ps_skip_mv[L1].s_mv.i2_mvy = (ps_skip_mv[L0].s_mv.i2_mvy - s_mvcol.i2_mvy) & 0xfffc;
}
return i4_skip_type;
}
/**
*******************************************************************************
*
* @brief The function computes the skip motion vectoe for B mb
*
* @par Description:
* The function gives the skip motion vector for B Mb, check if the Mb can be
* marked as skip
*
* @param[in] ps_proc
* Pointer to process context
*
* @param[in] u4_for_me
* Dummy
*
* @param[in] u4_for_me
* Dummy
*
* @returns Flag indicating if the current Mb can be skip or not
*
* @remarks The code implements the logic as described in sec 8.4.1.2.2 in H264
* specification. It also computes co-located MB parmas according to
*sec 8.4.1.2.1
*
*******************************************************************************/
WORD32 isvce_find_bskip_params(isvce_process_ctxt_t *ps_proc, WORD32 i4_reflist)
{
WORD32 i4_colzeroflag;
/* motion vectors */
isvce_enc_pu_t *ps_a_pu, *ps_c_pu, *ps_b_pu;
/* Syntax elem */
isvce_mb_info_t *ps_a_syn, *ps_b_syn, *ps_c_syn;
/* Variables to check if a particular mB is available */
WORD32 i4_a, i4_b, i4_c, i4_c_avail;
/* Mode availability, init to no modes available */
WORD32 i4_mode_avail;
/* mb neighbor availability */
block_neighbors_t *ps_ngbr_avbl = ps_proc->ps_ngbr_avbl;
/* Temp var */
WORD32 i, i4_cmpl_mode;
UNUSED(i4_reflist);
/**************************************************************************
*Find co-locates parameters
* See sec 8.4.1.2.1 for reference
**************************************************************************/
{
/*
* Find the co-located Mb and update the skip and pred appropriately
* 1) Default colpic is forward ref : Table 8-6
* 2) Default mb col is current MB : Table 8-8
*/
mv_t s_mvcol;
WORD32 i4_refidxcol;
if(ps_proc->ps_col_mb->u1_is_intra)
{
s_mvcol.i2_mvx = 0;
s_mvcol.i2_mvy = 0;
i4_refidxcol = -1;
}
else
{
if(ps_proc->ps_col_mb->as_pu->u1_pred_mode != L1)
{
s_mvcol = ps_proc->ps_col_mb->as_pu->as_me_info[L0].s_mv;
i4_refidxcol = 0;
}
else
{
s_mvcol = ps_proc->ps_col_mb->as_pu->as_me_info[L1].s_mv;
i4_refidxcol = 0;
}
}
/* RefPicList1[ 0 ] is marked as "used for short-term reference", as
* default */
i4_colzeroflag =
(!i4_refidxcol && (ABS(s_mvcol.i2_mvx) <= 1) && (ABS(s_mvcol.i2_mvy) <= 1));
}
/***************************************************************************
* Evaluating skip params
**************************************************************************/
/* Section 8.4.1.2.2 */
ps_a_syn = ps_proc->s_nbr_info.ps_left_mb_info;
ps_a_pu = ps_proc->s_nbr_info.ps_left_mb_info->as_pu;
ps_b_syn = ps_proc->s_nbr_info.ps_top_row_mb_info + ps_proc->i4_mb_x;
ps_b_pu = ps_b_syn->as_pu;
i4_c_avail = 0;
if(ps_ngbr_avbl->u1_mb_c)
{
ps_c_syn = ps_b_syn + 1;
ps_c_pu = ps_c_syn->as_pu;
i4_c_avail = 1;
}
else
{
ps_c_syn = ps_b_syn - 1;
ps_c_pu = ps_c_syn->as_pu;
i4_c_avail = ps_ngbr_avbl->u1_mb_d;
}
i4_a = ps_ngbr_avbl->u1_mb_a;
i4_a &= !ps_a_syn->u1_is_intra;
i4_b = ps_ngbr_avbl->u1_mb_b;
i4_b &= !ps_b_syn->u1_is_intra;
i4_c = i4_c_avail;
i4_c &= !ps_c_syn->u1_is_intra;
/* Init to no mode avail */
i4_mode_avail = 0;
for(i = 0; i < 2; i++)
{
i4_cmpl_mode = (i == 0) ? L1 : L0;
i4_mode_avail |= (i4_a && (ps_a_pu->u1_pred_mode != i4_cmpl_mode) &&
(ps_a_pu->as_me_info[i].i1_ref_idx == 0))
<< i;
i4_mode_avail |= (i4_b && (ps_b_pu->u1_pred_mode != i4_cmpl_mode) &&
(ps_b_pu->as_me_info[i].i1_ref_idx == 0))
<< i;
i4_mode_avail |= (i4_c && (ps_c_pu->u1_pred_mode != i4_cmpl_mode) &&
(ps_c_pu->as_me_info[i].i1_ref_idx == 0))
<< i;
}
/* Update skip MV for L0 */
if((i4_mode_avail & 0x1) && (!i4_colzeroflag))
{
ps_proc->ps_skip_mv[0].s_mv.i2_mvx = ps_proc->ps_pred_mv[0].s_mv.i2_mvx;
ps_proc->ps_skip_mv[0].s_mv.i2_mvy = ps_proc->ps_pred_mv[0].s_mv.i2_mvy;
}
else
{
ps_proc->ps_skip_mv[0].s_mv.i2_mvx = 0;
ps_proc->ps_skip_mv[0].s_mv.i2_mvy = 0;
}
/* Update skip MV for L1 */
if((i4_mode_avail & 0x2) && (!i4_colzeroflag))
{
ps_proc->ps_skip_mv[1].s_mv.i2_mvx = ps_proc->ps_pred_mv[1].s_mv.i2_mvx;
ps_proc->ps_skip_mv[1].s_mv.i2_mvy = ps_proc->ps_pred_mv[1].s_mv.i2_mvy;
}
else
{
ps_proc->ps_skip_mv[1].s_mv.i2_mvx = 0;
ps_proc->ps_skip_mv[1].s_mv.i2_mvy = 0;
}
/* Now see if the ME information matches the SKIP information */
switch(ps_proc->ps_mb_info->as_pu->u1_pred_mode)
{
case PRED_BI:
if((ps_proc->ps_mb_info->as_pu->as_me_info[0].s_mv.i2_mvx ==
ps_proc->ps_skip_mv[0].s_mv.i2_mvx) &&
(ps_proc->ps_mb_info->as_pu->as_me_info[0].s_mv.i2_mvy ==
ps_proc->ps_skip_mv[0].s_mv.i2_mvy) &&
(ps_proc->ps_mb_info->as_pu->as_me_info[1].s_mv.i2_mvx ==
ps_proc->ps_skip_mv[1].s_mv.i2_mvx) &&
(ps_proc->ps_mb_info->as_pu->as_me_info[1].s_mv.i2_mvy ==
ps_proc->ps_skip_mv[1].s_mv.i2_mvy) &&
(i4_mode_avail == 0x3 || i4_mode_avail == 0x0))
{
return 1;
}
break;
case PRED_L0:
if((ps_proc->ps_mb_info->as_pu->as_me_info[0].s_mv.i2_mvx ==
ps_proc->ps_skip_mv[0].s_mv.i2_mvx) &&
(ps_proc->ps_mb_info->as_pu->as_me_info[0].s_mv.i2_mvy ==
ps_proc->ps_skip_mv[0].s_mv.i2_mvy) &&
(i4_mode_avail == 0x1))
{
return 1;
}
break;
case PRED_L1:
if((ps_proc->ps_mb_info->as_pu->as_me_info[1].s_mv.i2_mvx ==
ps_proc->ps_skip_mv[1].s_mv.i2_mvx) &&
(ps_proc->ps_mb_info->as_pu->as_me_info[1].s_mv.i2_mvy ==
ps_proc->ps_skip_mv[1].s_mv.i2_mvy) &&
(i4_mode_avail == 0x2))
{
return 1;
}
break;
}
return 0;
}
/**
*******************************************************************************
*
* @brief This function computes the best motion vector among the tentative mv
* candidates chosen.
*
* @par Description:
* This function determines the position in the search window at which the
*motion estimation should begin in order to minimise the number of search
*iterations.
*
* @param[in] ps_mb_part
* pointer to current mb partition ctxt with respect to ME
*
* @param[in] u4_lambda_motion
* lambda motion
*
* @param[in] u4_fast_flag
* enable/disable fast sad computation
*
* @returns mv pair & corresponding distortion and cost
*
* @remarks Currently onyl 4 search candiates are supported
*
*******************************************************************************
*/
void isvce_evaluate_bipred(isvce_me_ctxt_t *ps_me_ctxt, isvce_process_ctxt_t *ps_proc,
mb_part_ctxt *ps_mb_ctxt_bi)
{
UWORD32 i, u4_fast_sad;
WORD32 i4_dest_buff;
mv_t *ps_l0_pred_mv, *ps_l1_pred_mv, s_l0_mv, s_l1_mv;
UWORD8 *pu1_ref_mb_l0, *pu1_ref_mb_l1;
UWORD8 *pu1_dst_buf;
WORD32 i4_ref_l0_stride, i4_ref_l1_stride;
WORD32 i4_mb_distortion, i4_mb_cost;
isvce_codec_t *ps_codec = ps_proc->ps_codec;
isa_dependent_fxns_t *ps_isa_dependent_fxns = &ps_codec->s_isa_dependent_fxns;
inter_pred_fxns_t *ps_inter_pred_fxns = &ps_isa_dependent_fxns->s_inter_pred_fxns;
u4_fast_sad = ps_me_ctxt->u4_enable_fast_sad;
i4_dest_buff = 0;
for(i = 0; i < ps_me_ctxt->u4_num_candidates[BI]; i += 2)
{
pu1_dst_buf = ps_me_ctxt->apu1_subpel_buffs[i4_dest_buff];
s_l0_mv.i2_mvx = ps_me_ctxt->as_mv_init_search[BI][i].i2_mvx >> 2;
s_l0_mv.i2_mvy = ps_me_ctxt->as_mv_init_search[BI][i].i2_mvy >> 2;
s_l1_mv.i2_mvx = ps_me_ctxt->as_mv_init_search[BI][i + 1].i2_mvx >> 2;
s_l1_mv.i2_mvy = ps_me_ctxt->as_mv_init_search[BI][i + 1].i2_mvy >> 2;
ps_l0_pred_mv = &ps_proc->ps_pred_mv[L0].s_mv;
ps_l1_pred_mv = &ps_proc->ps_pred_mv[L1].s_mv;
if((ps_me_ctxt->as_mv_init_search[BI][i].i2_mvx & 0x3) ||
(ps_me_ctxt->as_mv_init_search[BI][i].i2_mvy & 0x3))
{
pu1_ref_mb_l0 = ps_me_ctxt->as_mb_part[L0].pu1_best_hpel_buf;
i4_ref_l0_stride = ps_me_ctxt->u4_subpel_buf_strd;
}
else
{
pu1_ref_mb_l0 = ps_me_ctxt->apu1_ref_buf_luma[L0] + (s_l0_mv.i2_mvx) +
((s_l0_mv.i2_mvy) * ps_me_ctxt->ai4_rec_strd[L0]);
i4_ref_l0_stride = ps_me_ctxt->ai4_rec_strd[L0];
}
if((ps_me_ctxt->as_mv_init_search[BI][i + 1].i2_mvx & 0x3) ||
(ps_me_ctxt->as_mv_init_search[BI][i + 1].i2_mvy & 0x3))
{
pu1_ref_mb_l1 = ps_me_ctxt->as_mb_part[L1].pu1_best_hpel_buf;
i4_ref_l1_stride = ps_me_ctxt->u4_subpel_buf_strd;
}
else
{
pu1_ref_mb_l1 = ps_me_ctxt->apu1_ref_buf_luma[L1] + (s_l1_mv.i2_mvx) +
((s_l1_mv.i2_mvy) * ps_me_ctxt->ai4_rec_strd[L1]);
i4_ref_l1_stride = ps_me_ctxt->ai4_rec_strd[L1];
}
ps_inter_pred_fxns->pf_inter_pred_luma_bilinear(
pu1_ref_mb_l0, pu1_ref_mb_l1, pu1_dst_buf, i4_ref_l0_stride, i4_ref_l1_stride,
ps_me_ctxt->u4_subpel_buf_strd, MB_SIZE, MB_SIZE);
ps_me_ctxt->pf_ime_compute_sad_16x16[u4_fast_sad](
ps_me_ctxt->pu1_src_buf_luma, pu1_dst_buf, ps_me_ctxt->i4_src_strd,
ps_me_ctxt->u4_subpel_buf_strd, INT_MAX, &i4_mb_distortion);
/* compute cost */
i4_mb_cost =
ps_me_ctxt
->pu1_mv_bits[ps_me_ctxt->as_mv_init_search[BI][i].i2_mvx - ps_l0_pred_mv->i2_mvx];
i4_mb_cost +=
ps_me_ctxt
->pu1_mv_bits[ps_me_ctxt->as_mv_init_search[BI][i].i2_mvy - ps_l0_pred_mv->i2_mvy];
i4_mb_cost += ps_me_ctxt->pu1_mv_bits[ps_me_ctxt->as_mv_init_search[BI][i + 1].i2_mvx -
ps_l1_pred_mv->i2_mvx];
i4_mb_cost += ps_me_ctxt->pu1_mv_bits[ps_me_ctxt->as_mv_init_search[BI][i + 1].i2_mvy -
ps_l1_pred_mv->i2_mvy];
i4_mb_cost -=
(ps_me_ctxt->i4_skip_bias[BSLICE]) * (ps_me_ctxt->i4_skip_type == BI) * (i == 0);
i4_mb_cost *= ps_me_ctxt->u4_lambda_motion;
i4_mb_cost += i4_mb_distortion;
if(i4_mb_cost < ps_mb_ctxt_bi->i4_mb_cost)
{
ps_mb_ctxt_bi->i4_srch_pos_idx = (i >> 1);
ps_mb_ctxt_bi->i4_mb_cost = i4_mb_cost;
ps_mb_ctxt_bi->i4_mb_distortion = i4_mb_distortion;
ps_mb_ctxt_bi->pu1_best_hpel_buf = pu1_dst_buf;
i4_dest_buff = (i4_dest_buff + 1) % 2;
}
}
}
/**
*******************************************************************************
*
* @brief This function performs motion estimation for the current mb
*
* @par Description:
* The current mb is compared with a list of mb's in the reference frame for
* least cost. The mb that offers least cost is chosen as predicted mb and the
* displacement of the predicted mb from index location of the current mb is
* signaled as mv. The list of the mb's that are chosen in the reference frame
* are dependent on the speed of the ME configured.
*
* @param[in] ps_proc
* Process context corresponding to the job
*
* @returns motion vector of the pred mb, sad, cost.
*
* @remarks none
*
*******************************************************************************
*/
void isvce_compute_me_multi_reflist(isvce_process_ctxt_t *ps_proc)
{
/* me ctxt */
isvce_me_ctxt_t *ps_me_ctxt = &ps_proc->s_me_ctxt;
/* codec context */
isvce_codec_t *ps_codec = ps_proc->ps_codec;
isa_dependent_fxns_t *ps_isa_dependent_fxns = &ps_codec->s_isa_dependent_fxns;
inter_pred_fxns_t *ps_inter_pred_fxns = &ps_isa_dependent_fxns->s_inter_pred_fxns;
/* Temp variables for looping over ref lists */
WORD32 i4_reflist, i4_max_reflist;
/* source buffer for halp pel generation functions */
UWORD8 *pu1_hpel_src;
/* quantization parameters */
quant_params_t *ps_qp_params = ps_proc->ps_qp_params[0];
/* Mb part ctxts for SKIP */
mb_part_ctxt as_skip_mbpart[2];
ASSERT(1 == MAX_REF_FRAMES_PER_PRED_DIR);
/* Sad therholds */
ps_me_ctxt->pu2_sad_thrsh = ps_qp_params->pu2_sad_thrsh;
{
WORD32 rows_above, rows_below, columns_left, columns_right;
/* During evaluation for motion vectors do not search through padded regions
*/
/* Obtain number of rows and columns that are effective for computing for me
* evaluation */
rows_above = MB_SIZE + ps_proc->i4_mb_y * MB_SIZE;
rows_below = (ps_proc->i4_ht_mbs - ps_proc->i4_mb_y) * MB_SIZE;
columns_left = MB_SIZE + ps_proc->i4_mb_x * MB_SIZE;
columns_right = (ps_proc->i4_wd_mbs - ps_proc->i4_mb_x) * MB_SIZE;
/* init srch range */
/* NOTE : For now, lets limit the search range by DEFAULT_MAX_SRCH_RANGE_X /
* 2 on all sides.
*/
ps_me_ctxt->i4_srch_range_w = -MIN(columns_left, DEFAULT_MAX_SRCH_RANGE_X >> 1);
ps_me_ctxt->i4_srch_range_e = MIN(columns_right, DEFAULT_MAX_SRCH_RANGE_X >> 1);
ps_me_ctxt->i4_srch_range_n = -MIN(rows_above, DEFAULT_MAX_SRCH_RANGE_Y >> 1);
ps_me_ctxt->i4_srch_range_s = MIN(rows_below, DEFAULT_MAX_SRCH_RANGE_Y >> 1);
/* this is to facilitate fast sub pel computation with minimal loads */
if(ps_me_ctxt->u4_enable_hpel)
{
ps_me_ctxt->i4_srch_range_w += 1;
ps_me_ctxt->i4_srch_range_e -= 1;
ps_me_ctxt->i4_srch_range_n += 1;
ps_me_ctxt->i4_srch_range_s -= 1;
}
}
/* Compute ME and store the MVs */
{
/***********************************************************************
* Compute ME for lists L0 and L1
* For L0 -> L0 skip + L0
* for L1 -> L0 skip + L0 + L1 skip + L1
***********************************************************************/
i4_max_reflist = (ps_proc->i4_slice_type == PSLICE) ? L0 : L1;
/* Init SATQD for the current list */
ps_me_ctxt->u4_min_sad_reached = 0;
ps_me_ctxt->i4_min_sad = ps_proc->ps_cur_mb->u4_min_sad;
for(i4_reflist = L0; i4_reflist <= i4_max_reflist; i4_reflist++)
{
/* Get the seed motion vector candidates */
isvce_get_search_candidates(ps_proc, ps_me_ctxt, i4_reflist);
/* ****************************************************************
*Evaluate the SKIP for current list
* ****************************************************************/
as_skip_mbpart[i4_reflist].s_mv_curr.i2_mvx = 0;
as_skip_mbpart[i4_reflist].s_mv_curr.i2_mvy = 0;
as_skip_mbpart[i4_reflist].i4_mb_cost = INT_MAX;
as_skip_mbpart[i4_reflist].i4_mb_distortion = INT_MAX;
if(ps_me_ctxt->i4_skip_type == i4_reflist)
{
isvce_compute_skip_cost(
ps_me_ctxt, (ime_mv_t *) (&ps_proc->ps_skip_mv[i4_reflist].s_mv),
&as_skip_mbpart[i4_reflist], ps_codec->s_cfg.u4_enable_satqd, i4_reflist,
(ps_proc->i4_slice_type == BSLICE));
}
as_skip_mbpart[i4_reflist].s_mv_curr.i2_mvx <<= 2;
as_skip_mbpart[i4_reflist].s_mv_curr.i2_mvy <<= 2;
/******************************************************************
* Evaluate ME For current list
*****************************************************************/
ps_me_ctxt->as_mb_part[i4_reflist].s_mv_curr.i2_mvx = 0;
ps_me_ctxt->as_mb_part[i4_reflist].s_mv_curr.i2_mvy = 0;
ps_me_ctxt->as_mb_part[i4_reflist].i4_mb_cost = INT_MAX;
ps_me_ctxt->as_mb_part[i4_reflist].i4_mb_distortion = INT_MAX;
/* Init Hpel */
ps_me_ctxt->as_mb_part[i4_reflist].pu1_best_hpel_buf = NULL;
/* In case we found out the minimum SAD, exit the ME eval */
if(ps_me_ctxt->u4_min_sad_reached)
{
i4_max_reflist = i4_reflist;
break;
}
/* Evaluate search candidates for initial mv pt */
isvce_evaluate_init_srchposn_16x16(ps_me_ctxt, i4_reflist);
/********************************************************************/
/* full pel motion estimation */
/********************************************************************/
isvce_full_pel_motion_estimation_16x16(ps_me_ctxt, i4_reflist);
DEBUG_MV_HISTOGRAM_ADD((ps_me_ctxt->s_mb_part.s_mv_curr.i2_mvx >> 2),
(ps_me_ctxt->s_mb_part.s_mv_curr.i2_mvy >> 2));
DEBUG_SAD_HISTOGRAM_ADD(ps_me_ctxt->s_mb_part.i4_mb_distortion, 1);
/* Scale the MV to qpel resolution */
ps_me_ctxt->as_mb_part[i4_reflist].s_mv_curr.i2_mvx <<= 2;
ps_me_ctxt->as_mb_part[i4_reflist].s_mv_curr.i2_mvy <<= 2;
if(ps_me_ctxt->u4_enable_hpel)
{
/* moving src pointer to the converged motion vector location */
pu1_hpel_src = ps_me_ctxt->apu1_ref_buf_luma[i4_reflist] +
(ps_me_ctxt->as_mb_part[i4_reflist].s_mv_curr.i2_mvx >> 2) +
((ps_me_ctxt->as_mb_part[i4_reflist].s_mv_curr.i2_mvy >> 2) *
ps_me_ctxt->ai4_rec_strd[i4_reflist]);
ps_me_ctxt->apu1_subpel_buffs[0] = ps_proc->apu1_subpel_buffs[0];
ps_me_ctxt->apu1_subpel_buffs[1] = ps_proc->apu1_subpel_buffs[1];
ps_me_ctxt->apu1_subpel_buffs[2] = ps_proc->apu1_subpel_buffs[2];
/* Init the search position to an invalid number */
ps_me_ctxt->as_mb_part[i4_reflist].i4_srch_pos_idx = 3;
/* Incase a buffer is still in use by L0, replace it with spare buff */
ps_me_ctxt->apu1_subpel_buffs[ps_me_ctxt->as_mb_part[L0].i4_srch_pos_idx] =
ps_proc->apu1_subpel_buffs[3];
ps_me_ctxt->u4_subpel_buf_strd = HP_BUFF_WD;
/* half pel search is done for both sides of full pel,
* hence half_x of width x height = 17x16 is created
* starting from left half_x of converged full pel */
pu1_hpel_src -= 1;
/* computing half_x */
ps_codec->pf_ih264e_sixtapfilter_horz(
pu1_hpel_src, ps_me_ctxt->apu1_subpel_buffs[0],
ps_me_ctxt->ai4_rec_strd[i4_reflist], ps_me_ctxt->u4_subpel_buf_strd);
/*
* Halfpel search is done for both sides of full pel,
* hence half_y of width x height = 16x17 is created
* starting from top half_y of converged full pel
* for half_xy top_left is required
* hence it starts from pu1_hpel_src = full_pel_converged_point -
* i4_rec_strd - 1
*/
pu1_hpel_src -= ps_me_ctxt->ai4_rec_strd[i4_reflist];
/* computing half_y and half_xy */
ps_codec->pf_ih264e_sixtap_filter_2dvh_vert(
pu1_hpel_src, ps_me_ctxt->apu1_subpel_buffs[1],
ps_me_ctxt->apu1_subpel_buffs[2], ps_me_ctxt->ai4_rec_strd[i4_reflist],
ps_me_ctxt->u4_subpel_buf_strd, ps_proc->ai16_pred1 + 3,
ps_me_ctxt->u4_subpel_buf_strd);
isvce_sub_pel_motion_estimation_16x16(ps_me_ctxt, i4_reflist);
}
}
/***********************************************************************
* If a particular skiip Mv is giving better sad, copy to the corresponding
* MBPART
* In B slices this loop should go only to PREDL1: If we found min sad
* we will go to the skip ref list only
* Have to find a way to make it without too much change or new vars
**********************************************************************/
for(i4_reflist = 0; i4_reflist <= i4_max_reflist; i4_reflist++)
{
if(as_skip_mbpart[i4_reflist].i4_mb_cost <
ps_me_ctxt->as_mb_part[i4_reflist].i4_mb_cost)
{
ps_me_ctxt->as_mb_part[i4_reflist].i4_mb_cost =
as_skip_mbpart[i4_reflist].i4_mb_cost;
ps_me_ctxt->as_mb_part[i4_reflist].i4_mb_distortion =
as_skip_mbpart[i4_reflist].i4_mb_distortion;
ps_me_ctxt->as_mb_part[i4_reflist].s_mv_curr = as_skip_mbpart[i4_reflist].s_mv_curr;
}
}
/***********************************************************************
* Compute ME for BI
* In case of BI we do ME for two candidates
* 1) The best L0 and L1 Mvs
* 2) Skip L0 and L1 MVs
*
* TODO
* one of the search candidates is skip. Hence it may be duplicated
***********************************************************************/
if(i4_max_reflist == L1 && ps_me_ctxt->u4_min_sad_reached == 0)
{
WORD32 i, j = 0;
WORD32 l0_srch_pos_idx, l1_srch_pos_idx;
WORD32 i4_l0_skip_mv_idx, i4_l1_skip_mv_idx;
/* Get the free buffers */
l0_srch_pos_idx = ps_me_ctxt->as_mb_part[L0].i4_srch_pos_idx;
l1_srch_pos_idx = ps_me_ctxt->as_mb_part[L1].i4_srch_pos_idx;
/* Search for the two free buffers in subpel list */
for(i = 0; i < SUBPEL_BUFF_CNT; i++)
{
if(i != l0_srch_pos_idx && i != l1_srch_pos_idx)
{
ps_me_ctxt->apu1_subpel_buffs[j] = ps_proc->apu1_subpel_buffs[i];
j++;
}
}
ps_me_ctxt->u4_subpel_buf_strd = HP_BUFF_WD;
/* Copy the statial SKIP MV of each list */
i4_l0_skip_mv_idx = ps_me_ctxt->u4_num_candidates[L0] - 2;
i4_l1_skip_mv_idx = ps_me_ctxt->u4_num_candidates[L1] - 2;
ps_me_ctxt->as_mv_init_search[BI][0].i2_mvx =
ps_me_ctxt->as_mv_init_search[L0][i4_l0_skip_mv_idx].i2_mvx << 2;
ps_me_ctxt->as_mv_init_search[BI][0].i2_mvy =
ps_me_ctxt->as_mv_init_search[L0][i4_l0_skip_mv_idx].i2_mvy << 2;
ps_me_ctxt->as_mv_init_search[BI][1].i2_mvx =
ps_me_ctxt->as_mv_init_search[L1][i4_l1_skip_mv_idx].i2_mvx << 2;
ps_me_ctxt->as_mv_init_search[BI][1].i2_mvy =
ps_me_ctxt->as_mv_init_search[L1][i4_l1_skip_mv_idx].i2_mvy << 2;
/* Copy the SKIP MV temporal of each list */
i4_l0_skip_mv_idx++;
i4_l1_skip_mv_idx++;
ps_me_ctxt->as_mv_init_search[BI][2].i2_mvx =
ps_me_ctxt->as_mv_init_search[L0][i4_l0_skip_mv_idx].i2_mvx << 2;
ps_me_ctxt->as_mv_init_search[BI][2].i2_mvy =
ps_me_ctxt->as_mv_init_search[L0][i4_l0_skip_mv_idx].i2_mvy << 2;
ps_me_ctxt->as_mv_init_search[BI][3].i2_mvx =
ps_me_ctxt->as_mv_init_search[L1][i4_l1_skip_mv_idx].i2_mvx << 2;
ps_me_ctxt->as_mv_init_search[BI][3].i2_mvy =
ps_me_ctxt->as_mv_init_search[L1][i4_l1_skip_mv_idx].i2_mvy << 2;
/* Copy the best MV after ME */
ps_me_ctxt->as_mv_init_search[BI][4] = ps_me_ctxt->as_mb_part[L0].s_mv_curr;
ps_me_ctxt->as_mv_init_search[BI][5] = ps_me_ctxt->as_mb_part[L1].s_mv_curr;
ps_me_ctxt->u4_num_candidates[BI] = 6;
ps_me_ctxt->as_mb_part[BI].i4_mb_cost = INT_MAX;
ps_me_ctxt->as_mb_part[BI].i4_mb_distortion = INT_MAX;
isvce_evaluate_bipred(ps_me_ctxt, ps_proc, &ps_me_ctxt->as_mb_part[BI]);
i4_max_reflist = BI;
}
/**********************************************************************
* Now get the minimum of MB part sads by searching over all ref lists
**********************************************************************/
ps_proc->ps_mb_info->as_pu->u1_pred_mode = 0x3;
for(i4_reflist = 0; i4_reflist <= i4_max_reflist; i4_reflist++)
{
if(ps_me_ctxt->as_mb_part[i4_reflist].i4_mb_cost < ps_proc->ps_cur_mb->i4_mb_cost)
{
ps_proc->ps_cur_mb->i4_mb_cost = ps_me_ctxt->as_mb_part[i4_reflist].i4_mb_cost;
ps_proc->ps_cur_mb->i4_mb_distortion =
ps_me_ctxt->as_mb_part[i4_reflist].i4_mb_distortion;
ps_proc->ps_cur_mb->u4_mb_type =
(ps_proc->i4_slice_type == PSLICE) ? P16x16 : B16x16;
ps_proc->ps_mb_info->as_pu->u1_pred_mode = i4_reflist;
}
}
/**********************************************************************
* In case we have a BI MB, we have to copy the buffers and set proer MV's
* 1)In case its BI, we need to get the best MVs given by BI and update
* to their corresponding MB part
* 2)We also need to copy the buffer in which bipred buff is populated
*
* Not that if we have
**********************************************************************/
if(ps_proc->ps_mb_info->as_pu->u1_pred_mode == BI)
{
WORD32 i4_srch_pos = ps_me_ctxt->as_mb_part[BI].i4_srch_pos_idx;
UWORD8 *pu1_bi_buf = ps_me_ctxt->as_mb_part[BI].pu1_best_hpel_buf;
ps_me_ctxt->as_mb_part[L0].s_mv_curr =
ps_me_ctxt->as_mv_init_search[BI][i4_srch_pos << 1];
ps_me_ctxt->as_mb_part[L1].s_mv_curr =
ps_me_ctxt->as_mv_init_search[BI][(i4_srch_pos << 1) + 1];
/* Now we have to copy the buffers */
ps_inter_pred_fxns->pf_inter_pred_luma_copy(
pu1_bi_buf, ps_proc->pu1_best_subpel_buf, ps_me_ctxt->u4_subpel_buf_strd,
ps_proc->u4_bst_spel_buf_strd, MB_SIZE, MB_SIZE, NULL, 0);
}
else if(ps_me_ctxt->as_mb_part[ps_proc->ps_mb_info->as_pu->u1_pred_mode].pu1_best_hpel_buf)
{
/* Now we have to copy the buffers */
ps_inter_pred_fxns->pf_inter_pred_luma_copy(
ps_me_ctxt->as_mb_part[ps_proc->ps_mb_info->as_pu->u1_pred_mode].pu1_best_hpel_buf,
ps_proc->pu1_best_subpel_buf, ps_me_ctxt->u4_subpel_buf_strd,
ps_proc->u4_bst_spel_buf_strd, MB_SIZE, MB_SIZE, NULL, 0);
}
}
/**************************************************************************
*Now copy the MVs to the current PU with qpel scaling
***************************************************************************/
ps_proc->ps_mb_info->as_pu->as_me_info[L0].s_mv.i2_mvx =
(ps_me_ctxt->as_mb_part[L0].s_mv_curr.i2_mvx);
ps_proc->ps_mb_info->as_pu->as_me_info[L0].s_mv.i2_mvy =
(ps_me_ctxt->as_mb_part[L0].s_mv_curr.i2_mvy);
ps_proc->ps_mb_info->as_pu->as_me_info[L1].s_mv.i2_mvx =
(ps_me_ctxt->as_mb_part[L1].s_mv_curr.i2_mvx);
ps_proc->ps_mb_info->as_pu->as_me_info[L1].s_mv.i2_mvy =
(ps_me_ctxt->as_mb_part[L1].s_mv_curr.i2_mvy);
ps_proc->ps_mb_info->as_pu->as_me_info[0].i1_ref_idx =
(ps_proc->ps_mb_info->as_pu->u1_pred_mode != L1) ? 0 : -1;
ps_proc->ps_mb_info->as_pu->as_me_info[1].i1_ref_idx =
(ps_proc->ps_mb_info->as_pu->u1_pred_mode != L0) ? 0 : -1;
/* number of partitions */
ps_proc->u4_num_sub_partitions = 1;
*(ps_proc->pu4_mb_pu_cnt) = 1;
/* position in-terms of PU */
ps_proc->ps_mb_info->as_pu->u1_pos_x_in_4x4 = 0;
ps_proc->ps_mb_info->as_pu->u1_pos_y_in_4x4 = 0;
/* PU size */
ps_proc->ps_mb_info->as_pu->u1_wd_in_4x4_m1 = 3;
ps_proc->ps_mb_info->as_pu->u1_ht_in_4x4_m1 = 3;
/* Update min sad conditions */
if(ps_me_ctxt->u4_min_sad_reached == 1)
{
ps_proc->ps_cur_mb->u4_min_sad_reached = 1;
ps_proc->ps_cur_mb->u4_min_sad = ps_me_ctxt->i4_min_sad;
}
}
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