/******************************************************************************
*
* Copyright (C) 2018 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
* ihevcd_mv_pred.c
*
* @brief
* Contains functions for motion vector prediction
*
* @author
* Ittiam
*
* @par List of Functions:
* - ihevcd_mvp_spatial_cand()
*
* @remarks
* None
*
*******************************************************************************
*/
/*****************************************************************************/
/* File Includes */
/*****************************************************************************/
/* System include files */
#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include <assert.h>
#include <stdarg.h>
#include <math.h>
/* User include files */
#include "ihevc_typedefs.h"
#include "itt_video_api.h"
#include "ihevce_api.h"
#include "rc_cntrl_param.h"
#include "rc_frame_info_collector.h"
#include "rc_look_ahead_params.h"
#include "ihevc_defs.h"
#include "ihevc_macros.h"
#include "ihevc_debug.h"
#include "ihevc_structs.h"
#include "ihevc_platform_macros.h"
#include "ihevc_deblk.h"
#include "ihevc_itrans_recon.h"
#include "ihevc_chroma_itrans_recon.h"
#include "ihevc_chroma_intra_pred.h"
#include "ihevc_intra_pred.h"
#include "ihevc_inter_pred.h"
#include "ihevc_mem_fns.h"
#include "ihevc_padding.h"
#include "ihevc_weighted_pred.h"
#include "ihevc_sao.h"
#include "ihevc_resi_trans.h"
#include "ihevc_quant_iquant_ssd.h"
#include "ihevc_cabac_tables.h"
#include "ihevc_common_tables.h"
#include "ihevce_defs.h"
#include "ihevce_hle_interface.h"
#include "ihevce_lap_enc_structs.h"
#include "ihevce_multi_thrd_structs.h"
#include "ihevce_me_common_defs.h"
#include "ihevce_had_satd.h"
#include "ihevce_error_codes.h"
#include "ihevce_bitstream.h"
#include "ihevce_cabac.h"
#include "ihevce_rdoq_macros.h"
#include "ihevce_function_selector.h"
#include "ihevce_enc_structs.h"
#include "ihevce_entropy_structs.h"
#include "ihevce_cmn_utils_instr_set_router.h"
#include "ihevce_enc_loop_structs.h"
#include "hme_datatype.h"
#include "hme_interface.h"
#include "hme_common_defs.h"
#include "hme_defs.h"
#include "ihevce_mv_pred.h"
#include "ihevce_mv_pred_merge.h"
#include "ihevce_common_utils.h"
/*****************************************************************************/
/* Function Definitions */
/*****************************************************************************/
/**
*******************************************************************************
*
* @brief
* This function performs Motion Vector prediction and return a list of mv
*
* @par Description:
* MV predictor list is computed using neighbor mvs and colocated mv
*
* @param[in] ps_ctxt
* pointer to mv predictor context
*
* @param[in] ps_top_nbr_4x4
* pointer to top 4x4 nbr structure
*
* @param[in] ps_left_nbr_4x4
* pointer to left 4x4 nbr structure
*
* @param[in] ps_top_left_nbr_4x4
* pointer to top left 4x4 nbr structure
*
* @param[in] left_nbr_4x4_strd
* left nbr buffer stride in terms of 4x4 units
*
* @param[in] ps_avail_flags
* Neighbor availability flags container
*
* @param[in] ps_col_mv
* Colocated MV pointer
*
* @param[in] ps_pu
* Current Partition PU strucrture pointer
*
* @param[inout] ps_pred_mv
* pointer to store predicted MV list
*
* @returns
* None
* @remarks
*
*
*******************************************************************************
*/
void ihevce_mv_pred(
mv_pred_ctxt_t *ps_ctxt,
nbr_4x4_t *ps_top_nbr_4x4,
nbr_4x4_t *ps_left_nbr_4x4,
nbr_4x4_t *ps_top_left_nbr_4x4,
WORD32 left_nbr_4x4_strd,
nbr_avail_flags_t *ps_avail_flags,
pu_mv_t *ps_col_mv,
pu_t *ps_pu,
pu_mv_t *ps_pred_mv,
UWORD8 (*pau1_is_top_used)[MAX_MVP_LIST_CAND])
{
WORD32 is_scaled_flag_list[2] /* Indicates whether A0 or A1 is available */;
WORD32 lb_avail, l_avail, t_avail, tr_avail, tl_avail;
WORD32 avail_a_flag[2];
WORD32 avail_b_flag[2];
mv_t as_mv_a[2];
mv_t as_mv_b[2];
UWORD8 i1_cur_ref_idx_list[2];
WORD32 part_pos_x;
WORD32 part_pos_y;
WORD32 part_wd;
WORD32 part_ht;
/*******************************************/
/* Neighbor location: Graphical indication */
/* */
/* B2 _____________B1 B0 */
/* | | */
/* | | */
/* | | */
/* | PU ht| */
/* | | */
/* | | */
/* A1|______wd_______| */
/* A0 */
/* */
/*******************************************/
/* Initialization */
avail_a_flag[0] = 0;
avail_a_flag[1] = 0;
avail_b_flag[0] = 0;
avail_b_flag[1] = 0;
as_mv_a[0].i2_mvx = 0;
as_mv_a[0].i2_mvy = 0;
as_mv_a[1].i2_mvx = 0;
as_mv_a[1].i2_mvy = 0;
as_mv_b[0].i2_mvx = 0;
as_mv_b[0].i2_mvy = 0;
as_mv_b[1].i2_mvx = 0;
as_mv_b[1].i2_mvy = 0;
lb_avail = ps_avail_flags->u1_bot_lt_avail;
l_avail = ps_avail_flags->u1_left_avail;
tr_avail = ps_avail_flags->u1_top_rt_avail;
t_avail = ps_avail_flags->u1_top_avail;
tl_avail = ps_avail_flags->u1_top_lt_avail;
is_scaled_flag_list[0] = 0;
is_scaled_flag_list[1] = 0;
part_pos_x = ps_pu->b4_pos_x << 2;
part_pos_y = ps_pu->b4_pos_y << 2;
part_wd = (ps_pu->b4_wd + 1) << 2;
part_ht = (ps_pu->b4_ht + 1) << 2;
/* Initializing current PU reference index */
/* if -1 is set then that direction is invalid */
i1_cur_ref_idx_list[0] = (-1 == ps_pu->mv.i1_l0_ref_idx) ? 0 : ps_pu->mv.i1_l0_ref_idx;
i1_cur_ref_idx_list[1] = (-1 == ps_pu->mv.i1_l1_ref_idx) ? 0 : ps_pu->mv.i1_l1_ref_idx;
/************************************************************/
/* Calculating of motion vector A from neighbors A0 and A1 */
/************************************************************/
{
WORD32 l_x, a;
WORD32 *pi4_avail_flag;
WORD32 nbr_avail[2]; /*[A0/A1] */
WORD8 i1_nbr_ref_idx_list[2][2]; /* [A0/A1][L0/L1] */
UWORD8 u1_nbr_intra_flag[2]; /*[A0/A1] */
UWORD8 u1_nbr_pred_flag[2][2]; /* [A0/A1][L0/L1] */
mv_t *ps_mv;
nbr_4x4_t *ps_a0, *ps_a1;
mv_t *ps_nbr_mv[2][2]; /* [A0/A1][L0/L1] */
/* A0 and A1 initializations */
ps_mv = &as_mv_a[0];
pi4_avail_flag = avail_a_flag;
/* Pointers to A0 and A1 */
{
WORD32 y_a0, y_a1;
/* TODO: y_a0, y_a1 is coded assuming left nbr pointer starts at PU */
y_a0 = (part_ht >> 2);
y_a1 = ((part_ht - 1) >> 2);
ps_a0 = ps_left_nbr_4x4 + (y_a0 * left_nbr_4x4_strd);
ps_a1 = ps_left_nbr_4x4 + (y_a1 * left_nbr_4x4_strd);
}
nbr_avail[0] = lb_avail && (!ps_a0->b1_intra_flag);
nbr_avail[1] = l_avail && (!ps_a1->b1_intra_flag);
/* Setting is scaled flag based on availability of A0 and A1 */
if((nbr_avail[0] == 1) || (nbr_avail[1]))
{
is_scaled_flag_list[0] = 1;
is_scaled_flag_list[1] = 1;
}
/* Initializing A0 variables */
ps_nbr_mv[0][0] = &ps_a0->mv.s_l0_mv;
ps_nbr_mv[0][1] = &ps_a0->mv.s_l1_mv;
i1_nbr_ref_idx_list[0][0] = ps_a0->mv.i1_l0_ref_idx;
i1_nbr_ref_idx_list[0][1] = ps_a0->mv.i1_l1_ref_idx;
u1_nbr_pred_flag[0][0] = (UWORD8)ps_a0->b1_pred_l0_flag;
u1_nbr_pred_flag[0][1] = (UWORD8)ps_a0->b1_pred_l1_flag;
u1_nbr_intra_flag[0] = (UWORD8)ps_a0->b1_intra_flag;
/* Initializing A1 variables */
ps_nbr_mv[1][0] = &ps_a1->mv.s_l0_mv;
ps_nbr_mv[1][1] = &ps_a1->mv.s_l1_mv;
i1_nbr_ref_idx_list[1][0] = ps_a1->mv.i1_l0_ref_idx;
i1_nbr_ref_idx_list[1][1] = ps_a1->mv.i1_l1_ref_idx;
u1_nbr_pred_flag[1][0] = (UWORD8)ps_a1->b1_pred_l0_flag;
u1_nbr_pred_flag[1][1] = (UWORD8)ps_a1->b1_pred_l1_flag;
u1_nbr_intra_flag[1] = (UWORD8)ps_a1->b1_intra_flag;
/* Derivation of mvL0A and mvL1A from A0 and A1 */
for(l_x = 0; l_x < 2; l_x++) /* list 0 and list 1 */
{
WORD32 l_y;
l_y = !l_x; /* if i=0, y = L1 else y = L0 */
for(a = 0; a < 2; a++)
{
/* MODE_INTRA check has been taken care in availability check */
if((nbr_avail[a] == 1) && (pi4_avail_flag[l_x] == 0))
{
if(u1_nbr_pred_flag[a][l_x] == 1)
{
WORD32 nbr_ref_poc, cur_ref_poc;
WORD8 i1_cur_ref_idx, i1_nbr_ref_idx;
i1_cur_ref_idx = i1_cur_ref_idx_list[l_x];
cur_ref_poc = ps_ctxt->ps_ref_list[l_x][i1_cur_ref_idx]->i4_poc;
i1_nbr_ref_idx = i1_nbr_ref_idx_list[a][l_x];
nbr_ref_poc = ps_ctxt->ps_ref_list[l_x][i1_nbr_ref_idx]->i4_poc;
if(nbr_ref_poc == cur_ref_poc)
{
pi4_avail_flag[l_x] = 1;
ps_mv[l_x] = *ps_nbr_mv[a][l_x];
break;
}
}
if(u1_nbr_pred_flag[a][l_y] == 1)
{
WORD32 nbr_ref_poc, cur_ref_poc;
WORD8 i1_nbr_ref_idx, i1_cur_ref_idx;
i1_cur_ref_idx = i1_cur_ref_idx_list[l_x];
cur_ref_poc = ps_ctxt->ps_ref_list[l_x][i1_cur_ref_idx]->i4_poc;
i1_nbr_ref_idx = i1_nbr_ref_idx_list[a][l_y];
nbr_ref_poc = ps_ctxt->ps_ref_list[l_y][i1_nbr_ref_idx]->i4_poc;
if(nbr_ref_poc == cur_ref_poc)
{
pi4_avail_flag[l_x] = 1;
ps_mv[l_x] = *ps_nbr_mv[a][l_y];
break;
}
}
}
}
}
for(l_x = 0; l_x < 2; l_x++) /* list 0 and list 1 */
{
if(pi4_avail_flag[l_x] == 0)
{
WORD8 i1_nbr_ref_list_idx, i1_nbr_ref_idx;
WORD32 l_y;
l_y = !l_x; /* if i=0, y = L1 else y = L0 */
for(a = 0; a < 2; a++)
{
/* MODE_INTRA check has been taken care in availability check */
if((nbr_avail[a] == 1) && (pi4_avail_flag[l_x] == 0))
{
/* Long term reference check Removed */
if(u1_nbr_pred_flag[a][l_x] == 1)
{
pi4_avail_flag[l_x] = 1;
ps_mv[l_x] = *ps_nbr_mv[a][l_x];
i1_nbr_ref_idx = i1_nbr_ref_idx_list[a][l_x];
i1_nbr_ref_list_idx = l_x;
break;
}
/* Long term reference check Removed */
else if(u1_nbr_pred_flag[a][l_y] == 1)
{
pi4_avail_flag[l_x] = 1;
ps_mv[l_x] = *ps_nbr_mv[a][l_y];
i1_nbr_ref_idx = i1_nbr_ref_idx_list[a][l_y];
i1_nbr_ref_list_idx = l_y;
break;
}
}
}
/* Long term reference check Removed */
if(pi4_avail_flag[l_x] == 1)
{
WORD8 i1_cur_ref_idx;
WORD32 cur_ref_poc, nbr_ref_poc;
WORD32 cur_poc;
i1_cur_ref_idx = i1_cur_ref_idx_list[l_x];
cur_ref_poc = ps_ctxt->ps_ref_list[l_x][i1_cur_ref_idx]->i4_poc;
nbr_ref_poc = ps_ctxt->ps_ref_list[i1_nbr_ref_list_idx][i1_nbr_ref_idx]->i4_poc;
cur_poc = ps_ctxt->ps_slice_hdr->i4_abs_pic_order_cnt;
ihevce_scale_mv(&ps_mv[l_x], cur_ref_poc, nbr_ref_poc, cur_poc);
}
}
}
}
/************************************************************/
/* Calculating of motion vector B from neighbors B0 and B1 */
/************************************************************/
{
WORD32 l_x, b;
WORD32 *pi4_avail_flag;
WORD32 nbr_avail[3]; /* [B0/B1/B2] */
WORD8 i1_nbr_ref_idx_list[3][2]; /* [B0/B1/B2][L0/L1] */
UWORD8 u1_nbr_intra_flag[3]; /*[B0/B1/B2] */
UWORD8 u1_nbr_pred_flag[3][2]; /* [B0/B1/B2][L0/L1] */
mv_t *ps_mv;
nbr_4x4_t *ps_b0, *ps_b1, *ps_b2;
mv_t *ps_nbr_mv[3][2]; /* [B0/B1/B2][L0/L1] */
/* B0, B1 and B2 initializations */
ps_mv = &as_mv_b[0];
pi4_avail_flag = avail_b_flag;
/* Pointers to B0, B1 and B2 */
{
WORD32 x_b0, x_b1, x_b2;
/* Relative co-ordiante of Xp,Yp w.r.t CTB start will work */
/* as long as minCTB = 16 */
x_b0 = (part_pos_x + part_wd);
x_b1 = (part_pos_x + part_wd - 1);
x_b2 = (part_pos_x - 1);
/* Getting offset back to given pointer */
x_b0 = x_b0 - part_pos_x;
x_b1 = x_b1 - part_pos_x;
x_b2 = x_b2 - part_pos_x;
/* Below derivation are based on top pointer */
/* is pointing first pixel of PU */
ps_b0 = ps_top_nbr_4x4 + (x_b0 >> 2);
ps_b1 = ps_top_nbr_4x4 + (x_b1 >> 2);
/* At CTB boundary, use top-left passed in */
if(part_pos_y)
{
ps_b2 = ps_top_left_nbr_4x4;
}
else
{
/* Not at CTB boundary, use top and */
/* add correction to go to top-left */
ps_b2 = (ps_top_nbr_4x4) + (x_b2 >> 2);
}
}
nbr_avail[0] = tr_avail && (!ps_b0->b1_intra_flag);
nbr_avail[1] = t_avail && (!ps_b1->b1_intra_flag);
nbr_avail[2] = tl_avail && (!ps_b2->b1_intra_flag);
/* Initializing B0 related variables */
ps_nbr_mv[0][0] = &ps_b0->mv.s_l0_mv;
ps_nbr_mv[0][1] = &ps_b0->mv.s_l1_mv;
i1_nbr_ref_idx_list[0][0] = ps_b0->mv.i1_l0_ref_idx;
i1_nbr_ref_idx_list[0][1] = ps_b0->mv.i1_l1_ref_idx;
u1_nbr_pred_flag[0][0] = (UWORD8)ps_b0->b1_pred_l0_flag;
u1_nbr_pred_flag[0][1] = (UWORD8)ps_b0->b1_pred_l1_flag;
u1_nbr_intra_flag[0] = (UWORD8)ps_b0->b1_intra_flag;
/* Initializing B1 related variables */
ps_nbr_mv[1][0] = &ps_b1->mv.s_l0_mv;
ps_nbr_mv[1][1] = &ps_b1->mv.s_l1_mv;
i1_nbr_ref_idx_list[1][0] = ps_b1->mv.i1_l0_ref_idx;
i1_nbr_ref_idx_list[1][1] = ps_b1->mv.i1_l1_ref_idx;
u1_nbr_pred_flag[1][0] = (UWORD8)ps_b1->b1_pred_l0_flag;
u1_nbr_pred_flag[1][1] = (UWORD8)ps_b1->b1_pred_l1_flag;
u1_nbr_intra_flag[1] = (UWORD8)ps_b1->b1_intra_flag;
/* Initializing B2 related variables */
ps_nbr_mv[2][0] = &ps_b2->mv.s_l0_mv;
ps_nbr_mv[2][1] = &ps_b2->mv.s_l1_mv;
i1_nbr_ref_idx_list[2][0] = ps_b2->mv.i1_l0_ref_idx;
i1_nbr_ref_idx_list[2][1] = ps_b2->mv.i1_l1_ref_idx;
u1_nbr_pred_flag[2][0] = (UWORD8)ps_b2->b1_pred_l0_flag;
u1_nbr_pred_flag[2][1] = (UWORD8)ps_b2->b1_pred_l1_flag;
u1_nbr_intra_flag[2] = (UWORD8)ps_b2->b1_intra_flag;
/* Derivation of mvL0B and mvL1B from B0,B1 and B2 */
for(l_x = 0; l_x < 2; l_x++) /* list 0 and list 1 */
{
WORD32 l_y;
l_y = !l_x; /* if i=0, y = L1 else y = L0 */
for(b = 0; b < 3; b++)
{
if((nbr_avail[b] == 1) && (pi4_avail_flag[l_x] == 0))
{
if(u1_nbr_pred_flag[b][l_x] == 1)
{
WORD32 nbr_ref_poc, cur_ref_poc;
WORD8 i1_cur_ref_idx, i1_nbr_ref_idx;
i1_cur_ref_idx = i1_cur_ref_idx_list[l_x];
cur_ref_poc = ps_ctxt->ps_ref_list[l_x][i1_cur_ref_idx]->i4_poc;
i1_nbr_ref_idx = i1_nbr_ref_idx_list[b][l_x];
nbr_ref_poc = ps_ctxt->ps_ref_list[l_x][i1_nbr_ref_idx]->i4_poc;
if(nbr_ref_poc == cur_ref_poc)
{
pi4_avail_flag[l_x] = 1;
ps_mv[l_x] = *ps_nbr_mv[b][l_x];
break;
}
}
if(u1_nbr_pred_flag[b][l_y] == 1)
{
WORD32 nbr_ref_poc, cur_ref_poc;
WORD8 i1_nbr_ref_idx, i1_cur_ref_idx;
i1_cur_ref_idx = i1_cur_ref_idx_list[l_x];
cur_ref_poc = ps_ctxt->ps_ref_list[l_x][i1_cur_ref_idx]->i4_poc;
i1_nbr_ref_idx = i1_nbr_ref_idx_list[b][l_y];
nbr_ref_poc = ps_ctxt->ps_ref_list[l_y][i1_nbr_ref_idx]->i4_poc;
if(nbr_ref_poc == cur_ref_poc)
{
pi4_avail_flag[l_x] = 1;
ps_mv[l_x] = *ps_nbr_mv[b][l_y];
break;
}
}
}
}
}
if((is_scaled_flag_list[0] == 0) && (avail_b_flag[0] == 1))
{
avail_a_flag[0] = 1;
as_mv_a[0] = as_mv_b[0];
}
if((is_scaled_flag_list[1] == 0) && (avail_b_flag[1] == 1))
{
avail_a_flag[1] = 1;
as_mv_a[1] = as_mv_b[1];
}
for(l_x = 0; l_x < 2; l_x++) /* list 0 and list 1 */
{
if(is_scaled_flag_list[l_x] == 0)
{
/* If isScaledFlagLX == 0, availFlagLXB flag is set to 0 */
pi4_avail_flag[l_x] = 0;
{
WORD8 i1_nbr_ref_list_idx, i1_nbr_ref_idx;
WORD32 l_y;
l_y = !l_x; /* if i=0, y = L1 else y = L0 */
for(b = 0; b < 3; b++)
{
if((nbr_avail[b] == 1) && (pi4_avail_flag[l_x] == 0))
{
/* Long term reference check Removed */
if(u1_nbr_pred_flag[b][l_x] == 1)
{
pi4_avail_flag[l_x] = 1;
ps_mv[l_x] = *ps_nbr_mv[b][l_x];
i1_nbr_ref_idx = i1_nbr_ref_idx_list[b][l_x];
i1_nbr_ref_list_idx = l_x;
break;
}
/* Long term reference check Removed */
else if(u1_nbr_pred_flag[b][l_y] == 1)
{
pi4_avail_flag[l_x] = 1;
ps_mv[l_x] = *ps_nbr_mv[b][l_y];
i1_nbr_ref_idx = i1_nbr_ref_idx_list[b][l_y];
i1_nbr_ref_list_idx = l_y;
break;
}
}
}
/* Long term reference check Removed */
if(pi4_avail_flag[l_x] == 1)
{
WORD8 i1_cur_ref_idx;
WORD32 cur_ref_poc, nbr_ref_poc;
WORD32 cur_poc;
i1_cur_ref_idx = i1_cur_ref_idx_list[l_x];
cur_ref_poc = ps_ctxt->ps_ref_list[l_x][i1_cur_ref_idx]->i4_poc;
nbr_ref_poc =
ps_ctxt->ps_ref_list[i1_nbr_ref_list_idx][i1_nbr_ref_idx]->i4_poc;
cur_poc = ps_ctxt->ps_slice_hdr->i4_abs_pic_order_cnt;
if(cur_ref_poc != nbr_ref_poc)
ihevce_scale_mv(&ps_mv[l_x], cur_ref_poc, nbr_ref_poc, cur_poc);
}
}
}
}
}
/* Candidate list */
{
mv_t as_mvp_list_l0[MAX_MVP_LIST_CAND_MEM]; /*[Cand0/Cand1/Cand2] */
mv_t as_mvp_list_l1[MAX_MVP_LIST_CAND_MEM]; /*[Cand0/Cand1/Cand2] */
UWORD8 au1_is_top_used_l0[MAX_MVP_LIST_CAND_MEM];
UWORD8 au1_is_top_used_l1[MAX_MVP_LIST_CAND_MEM];
WORD32 num_mvp_cand_l0;
WORD32 num_mvp_cand_l1;
/* L0 candidate list*/
num_mvp_cand_l0 = 0;
if(avail_a_flag[0] == 1)
{
as_mvp_list_l0[num_mvp_cand_l0] = as_mv_a[0];
au1_is_top_used_l0[num_mvp_cand_l0] = (is_scaled_flag_list[0] == 0);
num_mvp_cand_l0++;
}
if(avail_b_flag[0] == 1)
{
if(((as_mv_a[0].i2_mvx != as_mv_b[0].i2_mvx) ||
(as_mv_a[0].i2_mvy != as_mv_b[0].i2_mvy)) ||
(0 == num_mvp_cand_l0))
{
as_mvp_list_l0[num_mvp_cand_l0] = as_mv_b[0];
au1_is_top_used_l0[num_mvp_cand_l0] = 1;
num_mvp_cand_l0++;
}
}
/* L1 candidate list*/
num_mvp_cand_l1 = 0;
if(avail_a_flag[1] == 1)
{
as_mvp_list_l1[num_mvp_cand_l1] = as_mv_a[1];
au1_is_top_used_l1[num_mvp_cand_l1] = (is_scaled_flag_list[1] == 0);
num_mvp_cand_l1++;
}
if(avail_b_flag[1] == 1)
{
if(((as_mv_a[1].i2_mvx != as_mv_b[1].i2_mvx) ||
(as_mv_a[1].i2_mvy != as_mv_b[1].i2_mvy)) ||
(0 == num_mvp_cand_l1))
{
as_mvp_list_l1[num_mvp_cand_l1] = as_mv_b[1];
au1_is_top_used_l1[num_mvp_cand_l1] = 1;
num_mvp_cand_l1++;
}
}
/***********************************************************/
/* Collocated MV prediction */
/***********************************************************/
if((MAX_MVP_LIST_CAND > num_mvp_cand_l0) || (MAX_MVP_LIST_CAND > num_mvp_cand_l1))
{
mv_t as_mv_col[2], s_mv_col_l0, s_mv_col_l1;
WORD32 avail_col_flag[2] = { 0 };
WORD32 x_col, y_col, avail_col_l0, avail_col_l1;
x_col = part_pos_x + part_wd;
y_col = part_pos_y + part_ht;
ihevce_collocated_mvp(ps_ctxt, ps_pu, as_mv_col, avail_col_flag, 1, x_col, y_col);
avail_col_l0 = avail_col_flag[0];
avail_col_l1 = avail_col_flag[1];
if(avail_col_l0 || avail_col_l1)
{
s_mv_col_l0 = as_mv_col[0];
s_mv_col_l1 = as_mv_col[1];
}
if(avail_col_l0 == 0 || avail_col_l1 == 0)
{
/* Checking Collocated MV availability at Center of PU */
x_col = part_pos_x + (part_wd >> 1);
y_col = part_pos_y + (part_ht >> 1);
ihevce_collocated_mvp(ps_ctxt, ps_pu, as_mv_col, avail_col_flag, 1, x_col, y_col);
if(avail_col_l0 == 0)
{
s_mv_col_l0 = as_mv_col[0];
}
if(avail_col_l1 == 0)
{
s_mv_col_l1 = as_mv_col[1];
}
avail_col_l0 |= avail_col_flag[0];
avail_col_l1 |= avail_col_flag[1];
}
/* Checking if mvp index matches collocated mv */
if(avail_col_l0)
{
if(MAX_MVP_LIST_CAND > num_mvp_cand_l0)
{
as_mvp_list_l0[num_mvp_cand_l0] = s_mv_col_l0;
au1_is_top_used_l0[num_mvp_cand_l0] = 0;
num_mvp_cand_l0++;
}
}
if(avail_col_l1)
{
if(MAX_MVP_LIST_CAND > num_mvp_cand_l1)
{
as_mvp_list_l1[num_mvp_cand_l1] = s_mv_col_l1;
au1_is_top_used_l1[num_mvp_cand_l1] = 0;
num_mvp_cand_l1++;
}
}
}
/* Adding zero if mv candidates are less than 2 */
while(num_mvp_cand_l0 < MAX_MVP_LIST_CAND)
{
as_mvp_list_l0[num_mvp_cand_l0].i2_mvx = 0;
as_mvp_list_l0[num_mvp_cand_l0].i2_mvy = 0;
au1_is_top_used_l0[num_mvp_cand_l0] = 0;
num_mvp_cand_l0++;
};
while(num_mvp_cand_l1 < MAX_MVP_LIST_CAND)
{
as_mvp_list_l1[num_mvp_cand_l1].i2_mvx = 0;
as_mvp_list_l1[num_mvp_cand_l1].i2_mvy = 0;
au1_is_top_used_l1[num_mvp_cand_l1] = 0;
num_mvp_cand_l1++;
};
/* Removing mvs if candidates are greater than 2 */
if(num_mvp_cand_l0 > MAX_MVP_LIST_CAND)
{
num_mvp_cand_l0 = MAX_MVP_LIST_CAND;
};
if(num_mvp_cand_l1 > MAX_MVP_LIST_CAND)
{
num_mvp_cand_l1 = MAX_MVP_LIST_CAND;
};
/* Copying list to output */
{
WORD32 i;
for(i = 0; i < num_mvp_cand_l0; i++)
{
ps_pred_mv[i].s_l0_mv = as_mvp_list_l0[i];
pau1_is_top_used[0][i] = au1_is_top_used_l0[i];
}
for(i = 0; i < num_mvp_cand_l1; i++)
{
ps_pred_mv[i].s_l1_mv = as_mvp_list_l1[i];
pau1_is_top_used[1][i] = au1_is_top_used_l1[i];
}
}
}
}