| /* |
| * Copyright (c) 2016, Alliance for Open Media. All rights reserved |
| * |
| * This source code is subject to the terms of the BSD 2 Clause License and |
| * the Alliance for Open Media Patent License 1.0. If the BSD 2 Clause License |
| * was not distributed with this source code in the LICENSE file, you can |
| * obtain it at www.aomedia.org/license/software. 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 www.aomedia.org/license/patent. |
| */ |
| |
| #include <math.h> |
| |
| #include "av1/common/common.h" |
| #include "av1/common/entropymode.h" |
| |
| #include "av1/encoder/cost.h" |
| #include "av1/encoder/encodemv.h" |
| #include "av1/encoder/subexp.h" |
| |
| #include "aom_dsp/aom_dsp_common.h" |
| |
| static struct av1_token mv_joint_encodings[MV_JOINTS]; |
| static struct av1_token mv_class_encodings[MV_CLASSES]; |
| static struct av1_token mv_fp_encodings[MV_FP_SIZE]; |
| |
| void av1_entropy_mv_init(void) { |
| av1_tokens_from_tree(mv_joint_encodings, av1_mv_joint_tree); |
| av1_tokens_from_tree(mv_class_encodings, av1_mv_class_tree); |
| av1_tokens_from_tree(mv_fp_encodings, av1_mv_fp_tree); |
| } |
| |
| static void encode_mv_component(aom_writer *w, int comp, nmv_component *mvcomp, |
| MvSubpelPrecision precision) { |
| 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 |
| |
| assert(comp != 0); |
| |
| // Sign |
| #if CONFIG_NEW_MULTISYMBOL |
| aom_write_bit(w, sign); |
| #else |
| aom_write(w, sign, mvcomp->sign); |
| #endif |
| |
| // Class |
| aom_write_symbol(w, mv_class, mvcomp->class_cdf, MV_CLASSES); |
| |
| // Integer bits |
| if (mv_class == MV_CLASS_0) { |
| #if CONFIG_NEW_MULTISYMBOL |
| aom_write_symbol(w, d, mvcomp->class0_cdf, CLASS0_SIZE); |
| #else |
| aom_write(w, d, mvcomp->class0[0]); |
| #endif |
| } else { |
| int i; |
| const int n = mv_class + CLASS0_BITS - 1; // number of bits |
| #if CONFIG_NEW_MULTISYMBOL |
| for (i = 0; i < n; ++i) |
| aom_write_symbol(w, (d >> i) & 1, mvcomp->bits_cdf[(i + 1) / 2], 2); |
| #else |
| for (i = 0; i < n; ++i) aom_write(w, (d >> i) & 1, mvcomp->bits[i]); |
| #endif |
| } |
| // Fractional bits |
| #if CONFIG_INTRABC || CONFIG_AMVR |
| if (precision > MV_SUBPEL_NONE) |
| #endif // CONFIG_INTRABC || CONFIG_AMVR |
| { |
| aom_write_symbol( |
| w, fr, |
| mv_class == MV_CLASS_0 ? mvcomp->class0_fp_cdf[d] : mvcomp->fp_cdf, |
| MV_FP_SIZE); |
| } |
| |
| // High precision bit |
| if (precision > MV_SUBPEL_LOW_PRECISION) |
| #if CONFIG_NEW_MULTISYMBOL |
| aom_write_symbol( |
| w, hp, mv_class == MV_CLASS_0 ? mvcomp->class0_hp_cdf : mvcomp->hp_cdf, |
| 2); |
| #else |
| aom_write(w, hp, mv_class == MV_CLASS_0 ? mvcomp->class0_hp : mvcomp->hp); |
| #endif |
| } |
| |
| static void build_nmv_component_cost_table(int *mvcost, |
| const nmv_component *const mvcomp, |
| MvSubpelPrecision precision) { |
| int i, v; |
| int sign_cost[2], class_cost[MV_CLASSES], class0_cost[CLASS0_SIZE]; |
| int bits_cost[MV_OFFSET_BITS][2]; |
| int class0_fp_cost[CLASS0_SIZE][MV_FP_SIZE], fp_cost[MV_FP_SIZE]; |
| int class0_hp_cost[2], hp_cost[2]; |
| |
| sign_cost[0] = av1_cost_zero(mvcomp->sign); |
| sign_cost[1] = av1_cost_one(mvcomp->sign); |
| av1_cost_tokens(class_cost, mvcomp->classes, av1_mv_class_tree); |
| av1_cost_tokens(class0_cost, mvcomp->class0, av1_mv_class0_tree); |
| for (i = 0; i < MV_OFFSET_BITS; ++i) { |
| bits_cost[i][0] = av1_cost_zero(mvcomp->bits[i]); |
| bits_cost[i][1] = av1_cost_one(mvcomp->bits[i]); |
| } |
| |
| for (i = 0; i < CLASS0_SIZE; ++i) |
| av1_cost_tokens(class0_fp_cost[i], mvcomp->class0_fp[i], av1_mv_fp_tree); |
| av1_cost_tokens(fp_cost, mvcomp->fp, av1_mv_fp_tree); |
| |
| if (precision > MV_SUBPEL_LOW_PRECISION) { |
| class0_hp_cost[0] = av1_cost_zero(mvcomp->class0_hp); |
| class0_hp_cost[1] = av1_cost_one(mvcomp->class0_hp); |
| hp_cost[0] = av1_cost_zero(mvcomp->hp); |
| hp_cost[1] = av1_cost_one(mvcomp->hp); |
| } |
| mvcost[0] = 0; |
| for (v = 1; v <= MV_MAX; ++v) { |
| int z, c, o, d, e, f, cost = 0; |
| z = v - 1; |
| c = av1_get_mv_class(z, &o); |
| cost += class_cost[c]; |
| d = (o >> 3); /* int mv data */ |
| f = (o >> 1) & 3; /* fractional pel mv data */ |
| e = (o & 1); /* high precision mv data */ |
| 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 CONFIG_INTRABC || CONFIG_AMVR |
| if (precision > MV_SUBPEL_NONE) |
| #endif // CONFIG_INTRABC || CONFIG_AMVR |
| { |
| if (c == MV_CLASS_0) { |
| cost += class0_fp_cost[d][f]; |
| } else { |
| cost += fp_cost[f]; |
| } |
| if (precision > MV_SUBPEL_LOW_PRECISION) { |
| 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]; |
| } |
| } |
| |
| #if !CONFIG_NEW_MULTISYMBOL |
| static void update_mv(aom_writer *w, const unsigned int ct[2], aom_prob *cur_p, |
| aom_prob upd_p) { |
| (void)upd_p; |
| // Just use the default maximum number of tile groups to avoid passing in the |
| // actual |
| // number |
| av1_cond_prob_diff_update(w, cur_p, ct, DEFAULT_MAX_NUM_TG); |
| } |
| |
| void av1_write_nmv_probs(AV1_COMMON *cm, int usehp, aom_writer *w, |
| nmv_context_counts *const nmv_counts) { |
| int i; |
| int nmv_ctx = 0; |
| #if CONFIG_AMVR |
| if (cm->cur_frame_force_integer_mv) { |
| return; |
| } |
| #endif |
| for (nmv_ctx = 0; nmv_ctx < NMV_CONTEXTS; ++nmv_ctx) { |
| nmv_context *const mvc = &cm->fc->nmvc[nmv_ctx]; |
| nmv_context_counts *const counts = &nmv_counts[nmv_ctx]; |
| |
| if (usehp) { |
| for (i = 0; i < 2; ++i) { |
| update_mv(w, counts->comps[i].class0_hp, &mvc->comps[i].class0_hp, |
| MV_UPDATE_PROB); |
| update_mv(w, counts->comps[i].hp, &mvc->comps[i].hp, MV_UPDATE_PROB); |
| } |
| } |
| } |
| } |
| #endif |
| |
| void av1_encode_mv(AV1_COMP *cpi, aom_writer *w, const MV *mv, const MV *ref, |
| nmv_context *mvctx, int usehp) { |
| const MV diff = { mv->row - ref->row, mv->col - ref->col }; |
| const MV_JOINT_TYPE j = av1_get_mv_joint(&diff); |
| #if CONFIG_AMVR |
| if (cpi->common.cur_frame_force_integer_mv) { |
| usehp = MV_SUBPEL_NONE; |
| } |
| #endif |
| aom_write_symbol(w, j, mvctx->joint_cdf, MV_JOINTS); |
| if (mv_joint_vertical(j)) |
| encode_mv_component(w, diff.row, &mvctx->comps[0], usehp); |
| |
| if (mv_joint_horizontal(j)) |
| encode_mv_component(w, diff.col, &mvctx->comps[1], usehp); |
| |
| // If auto_mv_step_size is enabled then keep track of the largest |
| // motion vector component used. |
| if (cpi->sf.mv.auto_mv_step_size) { |
| unsigned int maxv = AOMMAX(abs(mv->row), abs(mv->col)) >> 3; |
| cpi->max_mv_magnitude = AOMMAX(maxv, cpi->max_mv_magnitude); |
| } |
| } |
| |
| #if CONFIG_INTRABC |
| void av1_encode_dv(aom_writer *w, const MV *mv, const MV *ref, |
| nmv_context *mvctx) { |
| 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->joint_cdf, MV_JOINTS); |
| if (mv_joint_vertical(j)) |
| encode_mv_component(w, diff.row, &mvctx->comps[0], MV_SUBPEL_NONE); |
| |
| if (mv_joint_horizontal(j)) |
| encode_mv_component(w, diff.col, &mvctx->comps[1], MV_SUBPEL_NONE); |
| } |
| #endif // CONFIG_INTRABC |
| |
| void av1_build_nmv_cost_table(int *mvjoint, int *mvcost[2], |
| const nmv_context *ctx, |
| MvSubpelPrecision precision) { |
| av1_cost_tokens(mvjoint, ctx->joints, av1_mv_joint_tree); |
| build_nmv_component_cost_table(mvcost[0], &ctx->comps[0], precision); |
| build_nmv_component_cost_table(mvcost[1], &ctx->comps[1], precision); |
| } |
| |
| static void inc_mvs(const MB_MODE_INFO *mbmi, const MB_MODE_INFO_EXT *mbmi_ext, |
| const int_mv mvs[2], const int_mv pred_mvs[2], |
| nmv_context_counts *nmv_counts |
| #if CONFIG_AMVR |
| , |
| MvSubpelPrecision precision |
| #endif |
| ) { |
| int i; |
| PREDICTION_MODE mode = mbmi->mode; |
| |
| if (mode == NEWMV || mode == NEW_NEWMV) { |
| for (i = 0; i < 1 + has_second_ref(mbmi); ++i) { |
| const MV *ref = &mbmi_ext->ref_mvs[mbmi->ref_frame[i]][0].as_mv; |
| const MV diff = { mvs[i].as_mv.row - ref->row, |
| mvs[i].as_mv.col - ref->col }; |
| int8_t rf_type = av1_ref_frame_type(mbmi->ref_frame); |
| int nmv_ctx = |
| av1_nmv_ctx(mbmi_ext->ref_mv_count[rf_type], |
| mbmi_ext->ref_mv_stack[rf_type], i, mbmi->ref_mv_idx); |
| nmv_context_counts *counts = &nmv_counts[nmv_ctx]; |
| (void)pred_mvs; |
| #if CONFIG_AMVR |
| av1_inc_mv(&diff, counts, precision); |
| #else |
| av1_inc_mv(&diff, counts, 1); |
| #endif |
| } |
| } else if (mode == NEAREST_NEWMV || mode == NEAR_NEWMV) { |
| const MV *ref = &mbmi_ext->ref_mvs[mbmi->ref_frame[1]][0].as_mv; |
| const MV diff = { mvs[1].as_mv.row - ref->row, |
| mvs[1].as_mv.col - ref->col }; |
| int8_t rf_type = av1_ref_frame_type(mbmi->ref_frame); |
| int nmv_ctx = |
| av1_nmv_ctx(mbmi_ext->ref_mv_count[rf_type], |
| mbmi_ext->ref_mv_stack[rf_type], 1, mbmi->ref_mv_idx); |
| nmv_context_counts *counts = &nmv_counts[nmv_ctx]; |
| #if CONFIG_AMVR |
| av1_inc_mv(&diff, counts, precision); |
| #else |
| av1_inc_mv(&diff, counts, 1); |
| #endif |
| } else if (mode == NEW_NEARESTMV || mode == NEW_NEARMV) { |
| const MV *ref = &mbmi_ext->ref_mvs[mbmi->ref_frame[0]][0].as_mv; |
| const MV diff = { mvs[0].as_mv.row - ref->row, |
| mvs[0].as_mv.col - ref->col }; |
| int8_t rf_type = av1_ref_frame_type(mbmi->ref_frame); |
| int nmv_ctx = |
| av1_nmv_ctx(mbmi_ext->ref_mv_count[rf_type], |
| mbmi_ext->ref_mv_stack[rf_type], 0, mbmi->ref_mv_idx); |
| nmv_context_counts *counts = &nmv_counts[nmv_ctx]; |
| #if CONFIG_AMVR |
| av1_inc_mv(&diff, counts, precision); |
| #else |
| av1_inc_mv(&diff, counts, 1); |
| #endif |
| #if CONFIG_COMPOUND_SINGLEREF |
| } else { |
| assert( // mode == SR_NEAREST_NEWMV || |
| mode == SR_NEAR_NEWMV || mode == SR_ZERO_NEWMV || mode == SR_NEW_NEWMV); |
| const MV *ref = &mbmi_ext->ref_mvs[mbmi->ref_frame[0]][0].as_mv; |
| int8_t rf_type = av1_ref_frame_type(mbmi->ref_frame); |
| int nmv_ctx = |
| av1_nmv_ctx(mbmi_ext->ref_mv_count[rf_type], |
| mbmi_ext->ref_mv_stack[rf_type], 0, mbmi->ref_mv_idx); |
| nmv_context_counts *counts = &nmv_counts[nmv_ctx]; |
| (void)pred_mvs; |
| MV diff; |
| if (mode == SR_NEW_NEWMV) { |
| diff.row = mvs[0].as_mv.row - ref->row; |
| diff.col = mvs[0].as_mv.col - ref->col; |
| av1_inc_mv(&diff, counts, 1); |
| } |
| diff.row = mvs[1].as_mv.row - ref->row; |
| diff.col = mvs[1].as_mv.col - ref->col; |
| av1_inc_mv(&diff, counts, 1); |
| #endif // CONFIG_COMPOUND_SINGLEREF |
| } |
| } |
| |
| void av1_update_mv_count(ThreadData *td) { |
| const MACROBLOCKD *xd = &td->mb.e_mbd; |
| const MODE_INFO *mi = xd->mi[0]; |
| const MB_MODE_INFO *const mbmi = &mi->mbmi; |
| const MB_MODE_INFO_EXT *mbmi_ext = td->mb.mbmi_ext; |
| #if CONFIG_AMVR |
| MvSubpelPrecision precision = 1; |
| if (xd->cur_frame_force_integer_mv) { |
| precision = MV_SUBPEL_NONE; |
| } |
| #endif |
| |
| if (have_newmv_in_inter_mode(mbmi->mode)) |
| #if CONFIG_AMVR |
| inc_mvs(mbmi, mbmi_ext, mbmi->mv, mbmi->pred_mv, td->counts->mv, precision); |
| #else |
| inc_mvs(mbmi, mbmi_ext, mbmi->mv, mbmi->pred_mv, td->counts->mv); |
| #endif |
| } |