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/*
* Copyright (c) 2021, Alliance for Open Media. All rights reserved
*
* This source code is subject to the terms of the BSD 3-Clause Clear License
* and the Alliance for Open Media Patent License 1.0. If the BSD 3-Clause Clear
* License was not distributed with this source code in the LICENSE file, you
* can obtain it at aomedia.org/license/software-license/bsd-3-c-c/. If the
* Alliance for Open Media Patent License 1.0 was not distributed with this
* source code in the PATENTS file, you can obtain it at
* aomedia.org/license/patent-license/.
*/
#include <math.h>
#include "av1/common/common.h"
#include "av1/common/entropymode.h"
#include "av1/encoder/cost.h"
#include "av1/encoder/encodemv.h"
#include "aom_dsp/aom_dsp_common.h"
#include "aom_ports/bitops.h"
#include "av1/common/reconinter.h"
static void update_mv_component_stats_lower_precision(
int comp, nmv_component *mvcomp, MvSubpelPrecision precision) {
assert(comp != 0);
int offset;
const int nonZero_offset = (1 << (MV_PRECISION_ONE_PEL - precision));
const int sign = comp < 0;
const int mag_int_mv = (abs(comp) >> 3) - nonZero_offset;
assert(mag_int_mv >= 0);
const int mv_class = av1_get_mv_class_low_precision(mag_int_mv, &offset);
int has_offset = (mv_class >= min_class_with_offset[precision]);
int start_lsb = MV_PRECISION_ONE_PEL - precision;
int mv_class_coded_value = mv_class;
// There is no valid value of MV_CLASS_1 for MV_PRECISION_FOUR_PEL. So
// shifting the mv_class value before coding
// There is no valid value of MV_CLASS_1 and MV_CLASS_2 for
// MV_PRECISION_8_PEL. So shifting the mv_class value before coding
if (precision == MV_PRECISION_FOUR_PEL && mv_class > MV_CLASS_1)
mv_class_coded_value -= 1;
else if (precision == MV_PRECISION_8_PEL && mv_class > MV_CLASS_2)
mv_class_coded_value -= 2;
const int num_mv_classes = MV_CLASSES - (precision <= MV_PRECISION_FOUR_PEL) -
(precision <= MV_PRECISION_8_PEL);
// Sign
update_cdf(mvcomp->sign_cdf, sign, 2);
// Class
update_cdf(mvcomp->classes_cdf[av1_get_mv_class_context(precision)],
mv_class_coded_value, num_mv_classes);
// Integer bits
if (has_offset) {
const int n = (mv_class == MV_CLASS_0) ? 1 : mv_class;
for (int i = start_lsb; i < n; ++i)
update_cdf(mvcomp->bits_cdf[i], (offset >> i) & 1, 2);
}
}
static void update_mv_component_stats(int comp, nmv_component *mvcomp,
int is_adaptive_mvd,
MvSubpelPrecision precision) {
assert(comp != 0);
if (precision < MV_PRECISION_ONE_PEL) {
assert(!is_adaptive_mvd);
update_mv_component_stats_lower_precision(comp, mvcomp, precision);
return;
}
int offset;
const int sign = comp < 0;
const int mag = sign ? -comp : comp;
const int mv_class = av1_get_mv_class(mag - 1, &offset);
const int d = offset >> 3; // int mv data
const int fr = (offset >> 1) & 3; // fractional mv data
const int hp = offset & 1; // high precision mv data
// Sign
update_cdf(mvcomp->sign_cdf, sign, 2);
// Class
update_cdf(is_adaptive_mvd
? mvcomp->amvd_classes_cdf
: mvcomp->classes_cdf[av1_get_mv_class_context(precision)],
mv_class, MV_CLASSES);
int use_mv_class_offset = 1;
if (is_adaptive_mvd && (mv_class != MV_CLASS_0 || d > 0)) {
assert(fr == 3 && hp == 1);
precision = MV_PRECISION_ONE_PEL;
}
if (mv_class > MV_CLASS_0 && is_adaptive_mvd) use_mv_class_offset = 0;
if (use_mv_class_offset) {
// Integer bits
if (mv_class == MV_CLASS_0) {
update_cdf(mvcomp->class0_cdf, d, CLASS0_SIZE);
} else {
const int n = mv_class + CLASS0_BITS - 1; // number of bits
for (int i = 0; i < n; ++i)
update_cdf(mvcomp->bits_cdf[i], (d >> i) & 1, 2);
}
}
// Fractional bits
// 1/2 and 1/4 pel bits
if (precision > MV_PRECISION_ONE_PEL) {
aom_cdf_prob *fp_cdf = mv_class == MV_CLASS_0 ? mvcomp->class0_fp_cdf[d][0]
: mvcomp->fp_cdf[0];
update_cdf(fp_cdf, fr >> 1, 2);
if (precision > MV_PRECISION_HALF_PEL) {
fp_cdf = mv_class == MV_CLASS_0 ? mvcomp->class0_fp_cdf[d][1 + (fr >> 1)]
: mvcomp->fp_cdf[1 + (fr >> 1)];
update_cdf(fp_cdf, fr & 1, 2);
}
}
// High precision bit
// 1/8 pel bit
if (precision > MV_PRECISION_QTR_PEL) {
aom_cdf_prob *hp_cdf =
mv_class == MV_CLASS_0 ? mvcomp->class0_hp_cdf : mvcomp->hp_cdf;
update_cdf(hp_cdf, hp, 2);
}
}
void av1_update_mv_stats(MV mv, MV ref, nmv_context *mvctx, int is_adaptive_mvd,
MvSubpelPrecision precision) {
#if BUGFIX_AMVD_AMVR
if (!is_adaptive_mvd)
#endif // BUGFIX_AMVD_AMVR
#if CONFIG_C071_SUBBLK_WARPMV
if (precision < MV_PRECISION_HALF_PEL)
#endif // CONFIG_C071_SUBBLK_WARPMV
lower_mv_precision(&ref, precision);
const MV diff = { mv.row - ref.row, mv.col - ref.col };
#if CONFIG_C071_SUBBLK_WARPMV
assert(is_this_mv_precision_compliant(diff, precision));
#endif // CONFIG_C071_SUBBLK_WARPMV
const MV_JOINT_TYPE j = av1_get_mv_joint(&diff);
if (is_adaptive_mvd) assert(j < MV_JOINTS - 1);
if (is_adaptive_mvd)
update_cdf(mvctx->amvd_joints_cdf, j, MV_JOINTS);
else
update_cdf(mvctx->joints_cdf, j, MV_JOINTS);
if (mv_joint_vertical(j))
update_mv_component_stats(diff.row, &mvctx->comps[0], is_adaptive_mvd,
precision);
if (mv_joint_horizontal(j))
update_mv_component_stats(diff.col, &mvctx->comps[1], is_adaptive_mvd,
precision);
}
static void encode_mv_component_low_precisions(aom_writer *w, int comp,
nmv_component *mvcomp,
MvSubpelPrecision precision) {
int offset;
const int nonZero_offset = (1 << (MV_PRECISION_ONE_PEL - precision));
const int sign = comp < 0;
const int mag_int_mv = (abs(comp) >> 3) - nonZero_offset;
assert(mag_int_mv >= 0);
const int mv_class = av1_get_mv_class_low_precision(mag_int_mv, &offset);
int has_offset = (mv_class >= min_class_with_offset[precision]);
int start_lsb = MV_PRECISION_ONE_PEL - precision;
int mv_class_coded_value = mv_class;
// There is no valid value of MV_CLASS_1 for MV_PRECISION_FOUR_PEL. So
// shifting the mv_class value before coding
// There is no valid value of MV_CLASS_1 and MV_CLASS_2 for
// MV_PRECISION_8_PEL. So shifting the mv_class value before coding
if (precision == MV_PRECISION_FOUR_PEL && mv_class > MV_CLASS_1)
mv_class_coded_value -= 1;
else if (precision == MV_PRECISION_8_PEL && mv_class > MV_CLASS_2)
mv_class_coded_value -= 2;
const int num_mv_classes = MV_CLASSES - (precision <= MV_PRECISION_FOUR_PEL) -
(precision <= MV_PRECISION_8_PEL);
// Sign
aom_write_symbol(w, sign, mvcomp->sign_cdf, 2);
// Class
aom_write_symbol(w, mv_class_coded_value,
mvcomp->classes_cdf[av1_get_mv_class_context(precision)],
num_mv_classes);
// Integer bits
if (has_offset) {
int i;
const int n = (mv_class == MV_CLASS_0) ? 1 : mv_class;
for (i = start_lsb; i < n; ++i)
aom_write_symbol(w, (offset >> i) & 1, mvcomp->bits_cdf[i], 2);
}
}
static void encode_mv_component(aom_writer *w, int comp, nmv_component *mvcomp,
int is_adaptive_mvd,
MvSubpelPrecision precision) {
assert(comp != 0);
if (precision < MV_PRECISION_ONE_PEL) {
assert(!is_adaptive_mvd);
encode_mv_component_low_precisions(w, comp, mvcomp, precision);
return;
}
int offset;
const int sign = comp < 0;
const int mag = sign ? -comp : comp;
const int mv_class = av1_get_mv_class(mag - 1, &offset);
const int d = offset >> 3; // int mv data
const int fr = (offset >> 1) & 3; // fractional mv data
const int hp = offset & 1; // high precision mv data
// Sign
aom_write_symbol(w, sign, mvcomp->sign_cdf, 2);
// Class
aom_write_symbol(
w, mv_class,
is_adaptive_mvd
? mvcomp->amvd_classes_cdf
: mvcomp->classes_cdf[av1_get_mv_class_context(precision)],
MV_CLASSES);
int use_mv_class_offset = 1;
if (is_adaptive_mvd && (mv_class != MV_CLASS_0 || d > 0)) {
assert(fr == 3 && hp == 1);
precision = MV_PRECISION_ONE_PEL;
}
if (mv_class > MV_CLASS_0 && is_adaptive_mvd) use_mv_class_offset = 0;
if (use_mv_class_offset) {
// Integer bits
if (mv_class == MV_CLASS_0) {
aom_write_symbol(w, d, mvcomp->class0_cdf, CLASS0_SIZE);
} else {
int i;
const int n = mv_class + CLASS0_BITS - 1; // number of bits
for (i = 0; i < n; ++i)
aom_write_symbol(w, (d >> i) & 1, mvcomp->bits_cdf[i], 2);
}
}
// The 1/2 and 1/4 pel bits
if (precision > MV_PRECISION_ONE_PEL) {
aom_write_symbol(w, fr >> 1,
mv_class == MV_CLASS_0 ? mvcomp->class0_fp_cdf[d][0]
: mvcomp->fp_cdf[0],
2);
if (precision > MV_PRECISION_HALF_PEL)
aom_write_symbol(w, fr & 1,
mv_class == MV_CLASS_0
? mvcomp->class0_fp_cdf[d][1 + (fr >> 1)]
: mvcomp->fp_cdf[1 + (fr >> 1)],
2);
// High precision bit
// The 1/8 pel bits
if (precision > MV_PRECISION_QTR_PEL)
aom_write_symbol(
w, hp,
mv_class == MV_CLASS_0 ? mvcomp->class0_hp_cdf : mvcomp->hp_cdf, 2);
}
}
static void build_nmv_component_cost_table_low_precision(
int *mvcost, const nmv_component *const mvcomp,
MvSubpelPrecision pb_mv_precision) {
int i, v;
int sign_cost[2], class_cost[MV_CLASSES];
int bits_cost[MV_OFFSET_BITS][2];
assert(pb_mv_precision < MV_PRECISION_ONE_PEL);
av1_cost_tokens_from_cdf(sign_cost, mvcomp->sign_cdf, NULL);
av1_cost_tokens_from_cdf(
class_cost,
mvcomp->classes_cdf[av1_get_mv_class_context(pb_mv_precision)], NULL);
for (i = 0; i < MV_OFFSET_BITS; ++i) {
av1_cost_tokens_from_cdf(bits_cost[i], mvcomp->bits_cdf[i], NULL);
}
mvcost[0] = 0;
for (v = 1; v <= MV_MAX; ++v) {
int cost = 0;
const int round = MV_PRECISION_ONE_EIGHTH_PEL - pb_mv_precision;
int v_reduced = (v >> round) << round;
if (v != v_reduced) {
mvcost[v] = mvcost[-v] = INT_MAX;
continue;
}
int offset;
const int nonZero_offset = (1 << (MV_PRECISION_ONE_PEL - pb_mv_precision));
const int mag_int_mv = (v >> 3) - nonZero_offset;
assert(mag_int_mv >= 0);
const int mv_class = av1_get_mv_class_low_precision(mag_int_mv, &offset);
const int has_offset = (mv_class >= min_class_with_offset[pb_mv_precision]);
const int start_lsb = MV_PRECISION_ONE_PEL - pb_mv_precision;
int mv_class_coded_value = mv_class;
// There is no valid value of MV_CLASS_1 for MV_PRECISION_FOUR_PEL. So
// shifting the mv_class value before coding
// There is no valid value of MV_CLASS_1 and MV_CLASS_2 for
// MV_PRECISION_8_PEL. So shifting the mv_class value before coding
if (pb_mv_precision == MV_PRECISION_FOUR_PEL && mv_class > MV_CLASS_1)
mv_class_coded_value -= 1;
else if (pb_mv_precision == MV_PRECISION_8_PEL && mv_class > MV_CLASS_2)
mv_class_coded_value -= 2;
cost += class_cost[mv_class_coded_value];
if (has_offset) {
const int b = (mv_class == MV_CLASS_0) ? 1 : mv_class;
for (i = start_lsb; i < b; ++i) cost += bits_cost[i][((offset >> i) & 1)];
}
mvcost[v] = cost + sign_cost[0];
mvcost[-v] = cost + sign_cost[1];
}
}
static void build_nmv_component_cost_table(int *mvcost,
const nmv_component *const mvcomp,
MvSubpelPrecision pb_mv_precision,
int is_adaptive_mvd) {
int i, v;
int sign_cost[2], class_cost[MV_CLASSES], class0_cost[CLASS0_SIZE];
int bits_cost[MV_OFFSET_BITS][2];
int amvd_class_cost[MV_CLASSES];
int class0_fp_cost[CLASS0_SIZE][3][2], fp_cost[3][2];
int class0_hp_cost[2], hp_cost[2];
av1_cost_tokens_from_cdf(sign_cost, mvcomp->sign_cdf, NULL);
av1_cost_tokens_from_cdf(
class_cost,
mvcomp->classes_cdf[av1_get_mv_class_context(pb_mv_precision)], NULL);
av1_cost_tokens_from_cdf(amvd_class_cost, mvcomp->amvd_classes_cdf, NULL);
av1_cost_tokens_from_cdf(class0_cost, mvcomp->class0_cdf, NULL);
for (i = 0; i < MV_OFFSET_BITS; ++i) {
av1_cost_tokens_from_cdf(bits_cost[i], mvcomp->bits_cdf[i], NULL);
}
for (i = 0; i < CLASS0_SIZE; ++i) {
for (int j = 0; j < 3; ++j)
av1_cost_tokens_from_cdf(class0_fp_cost[i][j],
mvcomp->class0_fp_cdf[i][j], NULL);
}
for (int j = 0; j < 3; ++j)
av1_cost_tokens_from_cdf(fp_cost[j], mvcomp->fp_cdf[j], NULL);
if (pb_mv_precision > MV_PRECISION_QTR_PEL) {
av1_cost_tokens_from_cdf(class0_hp_cost, mvcomp->class0_hp_cdf, NULL);
av1_cost_tokens_from_cdf(hp_cost, mvcomp->hp_cdf, NULL);
}
mvcost[0] = 0;
for (v = 1; v <= MV_MAX; ++v) {
int z, c, o, d, e, f, cost = 0;
const int round = MV_PRECISION_ONE_EIGHTH_PEL - pb_mv_precision;
int v_reduced = (v >> round) << round;
if (v != v_reduced) {
mvcost[v] = mvcost[-v] = (INT_MAX >> 2); // initialize a large number
continue;
}
z = v - 1;
c = av1_get_mv_class(z, &o);
cost += is_adaptive_mvd ? amvd_class_cost[c] : class_cost[c];
d = (o >> 3); /* int mv data */
f = (o >> 1) & 3; /* fractional pel mv data */
e = (o & 1); /* high precision mv data */
int use_mv_class_offset = 1;
if (is_adaptive_mvd && (c != MV_CLASS_0 || d > 0)) {
pb_mv_precision = MV_PRECISION_ONE_PEL;
}
if (c > MV_CLASS_0 && is_adaptive_mvd) use_mv_class_offset = 0;
if (use_mv_class_offset) {
if (c == MV_CLASS_0) {
cost += class0_cost[d];
} else {
const int b = c + CLASS0_BITS - 1; /* number of bits */
for (i = 0; i < b; ++i) cost += bits_cost[i][((d >> i) & 1)];
}
}
if (pb_mv_precision > MV_PRECISION_ONE_PEL) {
if (c == MV_CLASS_0) {
cost += class0_fp_cost[d][0][f >> 1];
if (pb_mv_precision > MV_PRECISION_HALF_PEL)
cost += class0_fp_cost[d][1 + (f >> 1)][f & 1];
} else {
cost += fp_cost[0][f >> 1];
if (pb_mv_precision > MV_PRECISION_HALF_PEL)
cost += fp_cost[1 + (f >> 1)][f & 1];
}
if (pb_mv_precision > MV_PRECISION_QTR_PEL) {
if (c == MV_CLASS_0) {
cost += class0_hp_cost[e];
} else {
cost += hp_cost[e];
}
}
}
mvcost[v] = cost + sign_cost[0];
mvcost[-v] = cost + sign_cost[1];
}
}
void av1_encode_mv(AV1_COMP *cpi, aom_writer *w, MV mv, MV ref,
nmv_context *mvctx, MvSubpelPrecision pb_mv_precision) {
const AV1_COMMON *cm = &cpi->common;
const MACROBLOCK *const x = &cpi->td.mb;
const MACROBLOCKD *const xd = &x->e_mbd;
MB_MODE_INFO *mbmi = xd->mi[0];
const int is_adaptive_mvd = enable_adaptive_mvd_resolution(cm, mbmi);
#if BUGFIX_AMVD_AMVR
if (!is_adaptive_mvd)
#endif // BUGFIX_AMVD_AMVR
#if CONFIG_C071_SUBBLK_WARPMV
if (pb_mv_precision < MV_PRECISION_HALF_PEL)
#endif // CONFIG_C071_SUBBLK_WARPMV
lower_mv_precision(&ref, pb_mv_precision);
const MV diff = { mv.row - ref.row, mv.col - ref.col };
#if CONFIG_C071_SUBBLK_WARPMV
assert(is_this_mv_precision_compliant(diff, pb_mv_precision));
#endif // CONFIG_C071_SUBBLK_WARPMV
const MV_JOINT_TYPE j = av1_get_mv_joint(&diff);
if (is_adaptive_mvd) {
assert(j < MV_JOINTS - 1);
}
if (is_adaptive_mvd)
aom_write_symbol(w, j, mvctx->amvd_joints_cdf, MV_JOINTS);
else
aom_write_symbol(w, j, mvctx->joints_cdf, MV_JOINTS);
if (mv_joint_vertical(j))
encode_mv_component(w, diff.row, &mvctx->comps[0], is_adaptive_mvd,
pb_mv_precision);
if (mv_joint_horizontal(j))
encode_mv_component(w, diff.col, &mvctx->comps[1], is_adaptive_mvd,
pb_mv_precision);
// If auto_mv_step_size is enabled then keep track of the largest
// motion vector component used.
if (cpi->sf.mv_sf.auto_mv_step_size) {
int maxv = AOMMAX(abs(mv.row), abs(mv.col)) >> 3;
cpi->mv_search_params.max_mv_magnitude =
AOMMAX(maxv, cpi->mv_search_params.max_mv_magnitude);
}
}
void av1_encode_dv(aom_writer *w, const MV *mv, const MV *ref,
nmv_context *mvctx) {
// DV and ref DV should not have sub-pel.
assert((mv->col & 7) == 0);
assert((mv->row & 7) == 0);
assert((ref->col & 7) == 0);
assert((ref->row & 7) == 0);
const MV diff = { mv->row - ref->row, mv->col - ref->col };
const MV_JOINT_TYPE j = av1_get_mv_joint(&diff);
aom_write_symbol(w, j, mvctx->joints_cdf, MV_JOINTS);
if (mv_joint_vertical(j))
encode_mv_component(w, diff.row, &mvctx->comps[0], 0, MV_PRECISION_ONE_PEL);
if (mv_joint_horizontal(j))
encode_mv_component(w, diff.col, &mvctx->comps[1], 0, MV_PRECISION_ONE_PEL);
}
void av1_build_nmv_cost_table(int *mvjoint, int *mvcost[2],
const nmv_context *ctx,
MvSubpelPrecision precision, int is_adaptive_mvd
) {
av1_cost_tokens_from_cdf(
mvjoint, is_adaptive_mvd ? ctx->amvd_joints_cdf : ctx->joints_cdf, NULL);
if (precision < MV_PRECISION_ONE_PEL) {
assert(!is_adaptive_mvd);
build_nmv_component_cost_table_low_precision(mvcost[0], &ctx->comps[0],
precision);
build_nmv_component_cost_table_low_precision(mvcost[1], &ctx->comps[1],
precision);
} else {
build_nmv_component_cost_table(mvcost[0], &ctx->comps[0], precision,
is_adaptive_mvd);
build_nmv_component_cost_table(mvcost[1], &ctx->comps[1], precision,
is_adaptive_mvd);
}
}
int_mv av1_get_ref_mv_from_stack(int ref_idx,
const MV_REFERENCE_FRAME *ref_frame,
int ref_mv_idx,
const MB_MODE_INFO_EXT *mbmi_ext
#if CONFIG_SEP_COMP_DRL
,
const MB_MODE_INFO *mbmi
#endif // CONFIG_SEP_COMP_DRL
) {
const int8_t ref_frame_type = av1_ref_frame_type(ref_frame);
#if CONFIG_SEP_COMP_DRL
const CANDIDATE_MV *curr_ref_mv_stack =
has_second_drl(mbmi) ? mbmi_ext->ref_mv_stack[ref_frame[ref_idx]]
: mbmi_ext->ref_mv_stack[ref_frame_type];
#else
const CANDIDATE_MV *curr_ref_mv_stack =
mbmi_ext->ref_mv_stack[ref_frame_type];
#endif // CONFIG_SEP_COMP_DRL
if (is_inter_ref_frame(ref_frame[1])) {
assert(ref_idx == 0 || ref_idx == 1);
#if CONFIG_SEP_COMP_DRL
return ref_idx && !has_second_drl(mbmi)
? curr_ref_mv_stack[ref_mv_idx].comp_mv
#else
return ref_idx ? curr_ref_mv_stack[ref_mv_idx].comp_mv
#endif // CONFIG_SEP_COMP_DRL
: curr_ref_mv_stack[ref_mv_idx].this_mv;
}
assert(ref_idx == 0);
if (ref_mv_idx < mbmi_ext->ref_mv_count[ref_frame_type]) {
return curr_ref_mv_stack[ref_mv_idx].this_mv;
} else if (is_tip_ref_frame(ref_frame_type)) {
int_mv zero_mv;
zero_mv.as_int = 0;
return zero_mv;
} else {
return mbmi_ext->global_mvs[ref_frame_type];
}
}
int_mv av1_get_ref_mv(const MACROBLOCK *x, int ref_idx) {
const MACROBLOCKD *xd = &x->e_mbd;
const MB_MODE_INFO *mbmi = xd->mi[0];
if (have_nearmv_newmv_in_inter_mode(mbmi->mode)) {
assert(has_second_ref(mbmi));
}
#if CONFIG_SEP_COMP_DRL
const int ref_mv_idx = get_ref_mv_idx(mbmi, ref_idx);
return av1_get_ref_mv_from_stack(ref_idx, mbmi->ref_frame, ref_mv_idx,
x->mbmi_ext, mbmi);
#else
return av1_get_ref_mv_from_stack(ref_idx, mbmi->ref_frame, mbmi->ref_mv_idx,
x->mbmi_ext);
#endif // CONFIG_SEP_COMP_DRL
}
/**
* Get the best reference MV (for use with intrabc) from the refmv stack.
* This function will search all available references and return the first one
* that is not zero or invalid.
*
* @param allow_hp Can high-precision be used?
* @param mbmi_ext The MB ext struct. Used in get_ref_mv_from_stack.
* @param ref_frame The reference frame to find motion vectors from.
* @param is_integer is the MV an integer?
* @return The best MV, or INVALID_MV if none exists.
*/
int_mv av1_find_best_ref_mv_from_stack(const MB_MODE_INFO_EXT *mbmi_ext,
#if CONFIG_SEP_COMP_DRL
const MB_MODE_INFO *mbmi,
#endif // CONFIG_SEP_COMP_DRL
MV_REFERENCE_FRAME ref_frame,
MvSubpelPrecision precision) {
int_mv mv;
bool found_ref_mv = false;
MV_REFERENCE_FRAME ref_frames[2] = { ref_frame, NONE_FRAME };
int range = AOMMIN(mbmi_ext->ref_mv_count[ref_frame], MAX_REF_MV_STACK_SIZE);
for (int i = 0; i < range; i++) {
#if CONFIG_SEP_COMP_DRL
mv = av1_get_ref_mv_from_stack(0, ref_frames, i, mbmi_ext, mbmi);
#else
mv = av1_get_ref_mv_from_stack(0, ref_frames, i, mbmi_ext);
#endif // CONFIG_SEP_COMP_DRL
if (mv.as_int != 0 && mv.as_int != INVALID_MV) {
found_ref_mv = true;
break;
}
}
lower_mv_precision(&mv.as_mv, precision);
if (!found_ref_mv) mv.as_int = INVALID_MV;
return mv;
}
int_mv av1_find_best_ref_mvs_from_stack(const MB_MODE_INFO_EXT *mbmi_ext,
MV_REFERENCE_FRAME ref_frame,
MvSubpelPrecision precision) {
int_mv mv;
const int ref_idx = 0;
MV_REFERENCE_FRAME ref_frames[2] = { ref_frame, NONE_FRAME };
#if CONFIG_SEP_COMP_DRL
// this function is not called in this software.
MB_MODE_INFO mbmi;
mbmi.skip_mode = 0;
mbmi.mode = NEWMV;
mbmi.ref_frame[0] = ref_frame;
mv = av1_get_ref_mv_from_stack(ref_idx, ref_frames, 0, mbmi_ext, &mbmi);
#else
mv = av1_get_ref_mv_from_stack(ref_idx, ref_frames, 0, mbmi_ext);
#endif // CONFIG_SEP_COMP_DRL
lower_mv_precision(&mv.as_mv, precision);
return mv;
}