| /* |
| * 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 "av1/common/mvref_common.h" |
| |
| #if CONFIG_REF_MV |
| |
| static uint8_t add_ref_mv_candidate( |
| const MODE_INFO *const candidate_mi, const MB_MODE_INFO *const candidate, |
| const MV_REFERENCE_FRAME rf[2], uint8_t *refmv_count, |
| CANDIDATE_MV *ref_mv_stack, const int use_hp, int len, int block, int col) { |
| int index = 0, ref; |
| int newmv_count = 0; |
| |
| if (rf[1] == NONE) { |
| // single reference frame |
| for (ref = 0; ref < 2; ++ref) { |
| if (candidate->ref_frame[ref] == rf[0]) { |
| int_mv this_refmv = get_sub_block_mv(candidate_mi, ref, col, block); |
| lower_mv_precision(&this_refmv.as_mv, use_hp); |
| |
| for (index = 0; index < *refmv_count; ++index) |
| if (ref_mv_stack[index].this_mv.as_int == this_refmv.as_int) break; |
| |
| if (index < *refmv_count) ref_mv_stack[index].weight += 2 * len; |
| |
| // Add a new item to the list. |
| if (index == *refmv_count) { |
| ref_mv_stack[index].this_mv = this_refmv; |
| ref_mv_stack[index].pred_mv[0] = |
| get_sub_block_pred_mv(candidate_mi, ref, col, block); |
| ref_mv_stack[index].weight = 2 * len; |
| ++(*refmv_count); |
| |
| #if CONFIG_EXT_INTER |
| if (candidate->mode == NEWMV || candidate->mode == NEWFROMNEARMV) |
| #else |
| if (candidate->mode == NEWMV) |
| #endif // CONFIG_EXT_INTER |
| ++newmv_count; |
| } |
| |
| if (candidate_mi->mbmi.sb_type < BLOCK_8X8 && block >= 0) { |
| int alt_block = 3 - block; |
| this_refmv = get_sub_block_mv(candidate_mi, ref, col, alt_block); |
| lower_mv_precision(&this_refmv.as_mv, use_hp); |
| |
| for (index = 0; index < *refmv_count; ++index) |
| if (ref_mv_stack[index].this_mv.as_int == this_refmv.as_int) break; |
| |
| if (index < *refmv_count) ref_mv_stack[index].weight += len; |
| |
| // Add a new item to the list. |
| if (index == *refmv_count) { |
| ref_mv_stack[index].this_mv = this_refmv; |
| ref_mv_stack[index].pred_mv[0] = |
| get_sub_block_pred_mv(candidate_mi, ref, col, alt_block); |
| ref_mv_stack[index].weight = len; |
| ++(*refmv_count); |
| |
| #if CONFIG_EXT_INTER |
| if (candidate->mode == NEWMV || candidate->mode == NEWFROMNEARMV) |
| #else |
| if (candidate->mode == NEWMV) |
| #endif // CONFIG_EXT_INTER |
| ++newmv_count; |
| } |
| } |
| } |
| } |
| } else { |
| // compound reference frame |
| if (candidate->ref_frame[0] == rf[0] && candidate->ref_frame[1] == rf[1]) { |
| int_mv this_refmv[2]; |
| |
| for (ref = 0; ref < 2; ++ref) { |
| this_refmv[ref] = get_sub_block_mv(candidate_mi, ref, col, block); |
| lower_mv_precision(&this_refmv[ref].as_mv, use_hp); |
| } |
| |
| for (index = 0; index < *refmv_count; ++index) |
| if ((ref_mv_stack[index].this_mv.as_int == this_refmv[0].as_int) && |
| (ref_mv_stack[index].comp_mv.as_int == this_refmv[1].as_int)) |
| break; |
| |
| if (index < *refmv_count) ref_mv_stack[index].weight += 2 * len; |
| |
| // Add a new item to the list. |
| if (index == *refmv_count) { |
| ref_mv_stack[index].this_mv = this_refmv[0]; |
| ref_mv_stack[index].comp_mv = this_refmv[1]; |
| ref_mv_stack[index].pred_mv[0] = |
| get_sub_block_pred_mv(candidate_mi, 0, col, block); |
| ref_mv_stack[index].pred_mv[1] = |
| get_sub_block_pred_mv(candidate_mi, 1, col, block); |
| ref_mv_stack[index].weight = 2 * len; |
| ++(*refmv_count); |
| |
| #if CONFIG_EXT_INTER |
| if (candidate->mode == NEW_NEWMV) |
| #else |
| if (candidate->mode == NEWMV) |
| #endif // CONFIG_EXT_INTER |
| ++newmv_count; |
| } |
| |
| if (candidate_mi->mbmi.sb_type < BLOCK_8X8 && block >= 0) { |
| int alt_block = 3 - block; |
| this_refmv[0] = get_sub_block_mv(candidate_mi, 0, col, alt_block); |
| this_refmv[1] = get_sub_block_mv(candidate_mi, 1, col, alt_block); |
| |
| for (ref = 0; ref < 2; ++ref) |
| lower_mv_precision(&this_refmv[ref].as_mv, use_hp); |
| |
| for (index = 0; index < *refmv_count; ++index) |
| if (ref_mv_stack[index].this_mv.as_int == this_refmv[0].as_int && |
| ref_mv_stack[index].comp_mv.as_int == this_refmv[1].as_int) |
| break; |
| |
| if (index < *refmv_count) ref_mv_stack[index].weight += len; |
| |
| // Add a new item to the list. |
| if (index == *refmv_count) { |
| ref_mv_stack[index].this_mv = this_refmv[0]; |
| ref_mv_stack[index].comp_mv = this_refmv[1]; |
| ref_mv_stack[index].pred_mv[0] = |
| get_sub_block_pred_mv(candidate_mi, 0, col, block); |
| ref_mv_stack[index].pred_mv[1] = |
| get_sub_block_pred_mv(candidate_mi, 1, col, block); |
| ref_mv_stack[index].weight = len; |
| ++(*refmv_count); |
| |
| #if CONFIG_EXT_INTER |
| if (candidate->mode == NEW_NEWMV) |
| #else |
| if (candidate->mode == NEWMV) |
| #endif // CONFIG_EXT_INTER |
| ++newmv_count; |
| } |
| } |
| } |
| } |
| return newmv_count; |
| } |
| |
| static uint8_t scan_row_mbmi(const AV1_COMMON *cm, const MACROBLOCKD *xd, |
| const int mi_row, const int mi_col, int block, |
| const MV_REFERENCE_FRAME rf[2], int row_offset, |
| CANDIDATE_MV *ref_mv_stack, uint8_t *refmv_count) { |
| const TileInfo *const tile = &xd->tile; |
| int i; |
| uint8_t newmv_count = 0; |
| |
| for (i = 0; i < xd->n8_w && *refmv_count < MAX_REF_MV_STACK_SIZE;) { |
| POSITION mi_pos; |
| const int use_step_16 = (xd->n8_w >= 8); |
| |
| mi_pos.row = row_offset; |
| mi_pos.col = i; |
| if (is_inside(tile, mi_col, mi_row, &mi_pos)) { |
| const MODE_INFO *const candidate_mi = |
| xd->mi[mi_pos.row * xd->mi_stride + mi_pos.col]; |
| const MB_MODE_INFO *const candidate = &candidate_mi->mbmi; |
| int len = |
| AOMMIN(xd->n8_w, num_8x8_blocks_wide_lookup[candidate->sb_type]); |
| if (use_step_16) len = AOMMAX(2, len); |
| newmv_count += add_ref_mv_candidate( |
| candidate_mi, candidate, rf, refmv_count, ref_mv_stack, |
| cm->allow_high_precision_mv, len, block, mi_pos.col); |
| i += len; |
| } else { |
| if (use_step_16) |
| i += 2; |
| else |
| ++i; |
| } |
| } |
| |
| return newmv_count; |
| } |
| |
| static uint8_t scan_col_mbmi(const AV1_COMMON *cm, const MACROBLOCKD *xd, |
| const int mi_row, const int mi_col, int block, |
| const MV_REFERENCE_FRAME rf[2], int col_offset, |
| CANDIDATE_MV *ref_mv_stack, uint8_t *refmv_count) { |
| const TileInfo *const tile = &xd->tile; |
| int i; |
| uint8_t newmv_count = 0; |
| |
| for (i = 0; i < xd->n8_h && *refmv_count < MAX_REF_MV_STACK_SIZE;) { |
| POSITION mi_pos; |
| const int use_step_16 = (xd->n8_h >= 8); |
| |
| mi_pos.row = i; |
| mi_pos.col = col_offset; |
| if (is_inside(tile, mi_col, mi_row, &mi_pos)) { |
| const MODE_INFO *const candidate_mi = |
| xd->mi[mi_pos.row * xd->mi_stride + mi_pos.col]; |
| const MB_MODE_INFO *const candidate = &candidate_mi->mbmi; |
| int len = |
| AOMMIN(xd->n8_h, num_8x8_blocks_high_lookup[candidate->sb_type]); |
| if (use_step_16) len = AOMMAX(2, len); |
| newmv_count += add_ref_mv_candidate( |
| candidate_mi, candidate, rf, refmv_count, ref_mv_stack, |
| cm->allow_high_precision_mv, len, block, mi_pos.col); |
| i += len; |
| } else { |
| if (use_step_16) |
| i += 2; |
| else |
| ++i; |
| } |
| } |
| |
| return newmv_count; |
| } |
| |
| static uint8_t scan_blk_mbmi(const AV1_COMMON *cm, const MACROBLOCKD *xd, |
| const int mi_row, const int mi_col, int block, |
| const MV_REFERENCE_FRAME rf[2], int row_offset, |
| int col_offset, CANDIDATE_MV *ref_mv_stack, |
| uint8_t *refmv_count) { |
| const TileInfo *const tile = &xd->tile; |
| POSITION mi_pos; |
| uint8_t newmv_count = 0; |
| |
| mi_pos.row = row_offset; |
| mi_pos.col = col_offset; |
| |
| if (is_inside(tile, mi_col, mi_row, &mi_pos) && |
| *refmv_count < MAX_REF_MV_STACK_SIZE) { |
| const MODE_INFO *const candidate_mi = |
| xd->mi[mi_pos.row * xd->mi_stride + mi_pos.col]; |
| const MB_MODE_INFO *const candidate = &candidate_mi->mbmi; |
| const int len = 1; |
| |
| newmv_count += add_ref_mv_candidate( |
| candidate_mi, candidate, rf, refmv_count, ref_mv_stack, |
| cm->allow_high_precision_mv, len, block, mi_pos.col); |
| } // Analyze a single 8x8 block motion information. |
| |
| return newmv_count; |
| } |
| |
| static int has_top_right(const MACROBLOCKD *xd, int mi_row, int mi_col, |
| int bs) { |
| // In a split partition all apart from the bottom right has a top right |
| int has_tr = !((mi_row & bs) && (mi_col & bs)); |
| |
| // bs > 0 and bs is a power of 2 |
| assert(bs > 0 && !(bs & (bs - 1))); |
| |
| // For each 4x4 group of blocks, when the bottom right is decoded the blocks |
| // to the right have not been decoded therefore the bottom right does |
| // not have a top right |
| while (bs < MAX_MIB_SIZE) { |
| if (mi_col & bs) { |
| if ((mi_col & (2 * bs)) && (mi_row & (2 * bs))) { |
| has_tr = 0; |
| break; |
| } |
| } else { |
| break; |
| } |
| bs <<= 1; |
| } |
| |
| // The left hand of two vertical rectangles always has a top right (as the |
| // block above will have been decoded) |
| if (xd->n8_w < xd->n8_h) |
| if (!xd->is_sec_rect) has_tr = 1; |
| |
| // The bottom of two horizontal rectangles never has a top right (as the block |
| // to the right won't have been decoded) |
| if (xd->n8_w > xd->n8_h) |
| if (xd->is_sec_rect) has_tr = 0; |
| |
| #if CONFIG_EXT_PARTITION_TYPES |
| // The bottom left square of a Vertical A does not have a top right as it is |
| // decoded before the right hand rectangle of the partition |
| if (xd->mi[0]->mbmi.partition == PARTITION_VERT_A) |
| if ((mi_row & bs) && !(mi_col & bs)) has_tr = 0; |
| #endif // CONFIG_EXT_PARTITION_TYPES |
| |
| return has_tr; |
| } |
| |
| static void handle_sec_rect_block(const MB_MODE_INFO *const candidate, |
| uint8_t refmv_count, |
| CANDIDATE_MV *ref_mv_stack, |
| MV_REFERENCE_FRAME ref_frame, |
| int16_t *mode_context) { |
| int rf, idx; |
| |
| for (rf = 0; rf < 2; ++rf) { |
| if (candidate->ref_frame[rf] == ref_frame) { |
| const int list_range = AOMMIN(refmv_count, MAX_MV_REF_CANDIDATES); |
| |
| const int_mv pred_mv = candidate->mv[rf]; |
| for (idx = 0; idx < list_range; ++idx) |
| if (pred_mv.as_int == ref_mv_stack[idx].this_mv.as_int) break; |
| |
| if (idx < list_range) { |
| if (idx == 0) |
| mode_context[ref_frame] |= (1 << SKIP_NEARESTMV_OFFSET); |
| else if (idx == 1) |
| mode_context[ref_frame] |= (1 << SKIP_NEARMV_OFFSET); |
| } |
| } |
| } |
| } |
| |
| static int add_col_ref_mv(const AV1_COMMON *cm, |
| const MV_REF *prev_frame_mvs_base, |
| const MACROBLOCKD *xd, int mi_row, int mi_col, |
| MV_REFERENCE_FRAME ref_frame, int blk_row, |
| int blk_col, uint8_t *refmv_count, |
| CANDIDATE_MV *ref_mv_stack, int16_t *mode_context) { |
| const MV_REF *prev_frame_mvs = |
| prev_frame_mvs_base + blk_row * cm->mi_cols + blk_col; |
| POSITION mi_pos; |
| int ref, idx; |
| int coll_blk_count = 0; |
| |
| mi_pos.row = blk_row; |
| mi_pos.col = blk_col; |
| |
| if (!is_inside(&xd->tile, mi_col, mi_row, &mi_pos)) return coll_blk_count; |
| |
| for (ref = 0; ref < 2; ++ref) { |
| if (prev_frame_mvs->ref_frame[ref] == ref_frame) { |
| int_mv this_refmv = prev_frame_mvs->mv[ref]; |
| lower_mv_precision(&this_refmv.as_mv, cm->allow_high_precision_mv); |
| |
| if (abs(this_refmv.as_mv.row) >= 16 || abs(this_refmv.as_mv.col) >= 16) |
| mode_context[ref_frame] |= (1 << ZEROMV_OFFSET); |
| |
| for (idx = 0; idx < *refmv_count; ++idx) |
| if (this_refmv.as_int == ref_mv_stack[idx].this_mv.as_int) break; |
| |
| if (idx < *refmv_count) ref_mv_stack[idx].weight += 2; |
| |
| if (idx == *refmv_count && *refmv_count < MAX_REF_MV_STACK_SIZE) { |
| ref_mv_stack[idx].this_mv.as_int = this_refmv.as_int; |
| ref_mv_stack[idx].pred_mv[0] = prev_frame_mvs->pred_mv[ref]; |
| ref_mv_stack[idx].weight = 2; |
| ++(*refmv_count); |
| } |
| |
| ++coll_blk_count; |
| } |
| } |
| |
| return coll_blk_count; |
| } |
| |
| static void setup_ref_mv_list(const AV1_COMMON *cm, const MACROBLOCKD *xd, |
| MV_REFERENCE_FRAME ref_frame, |
| uint8_t *refmv_count, CANDIDATE_MV *ref_mv_stack, |
| int_mv *mv_ref_list, int block, int mi_row, |
| int mi_col, int16_t *mode_context) { |
| int idx, nearest_refmv_count = 0; |
| uint8_t newmv_count = 0; |
| CANDIDATE_MV tmp_mv; |
| int len, nr_len; |
| |
| const MV_REF *const prev_frame_mvs_base = |
| cm->use_prev_frame_mvs |
| ? cm->prev_frame->mvs + mi_row * cm->mi_cols + mi_col |
| : NULL; |
| |
| const int bs = AOMMAX(xd->n8_w, xd->n8_h); |
| const int has_tr = has_top_right(xd, mi_row, mi_col, bs); |
| MV_REFERENCE_FRAME rf[2]; |
| |
| av1_set_ref_frame(rf, ref_frame); |
| mode_context[ref_frame] = 0; |
| *refmv_count = 0; |
| |
| // Scan the first above row mode info. |
| newmv_count += scan_row_mbmi(cm, xd, mi_row, mi_col, block, rf, -1, |
| ref_mv_stack, refmv_count); |
| // Scan the first left column mode info. |
| newmv_count += scan_col_mbmi(cm, xd, mi_row, mi_col, block, rf, -1, |
| ref_mv_stack, refmv_count); |
| |
| // Check top-right boundary |
| if (has_tr) |
| newmv_count += scan_blk_mbmi(cm, xd, mi_row, mi_col, block, rf, -1, 1, |
| ref_mv_stack, refmv_count); |
| |
| nearest_refmv_count = *refmv_count; |
| |
| for (idx = 0; idx < nearest_refmv_count; ++idx) |
| ref_mv_stack[idx].weight += REF_CAT_LEVEL; |
| |
| if (prev_frame_mvs_base && cm->show_frame && cm->last_show_frame && |
| rf[1] == NONE) { |
| int blk_row, blk_col; |
| int coll_blk_count = 0; |
| |
| for (blk_row = 0; blk_row < xd->n8_h; blk_row += 2) { |
| for (blk_col = 0; blk_col < xd->n8_w; blk_col += 2) { |
| coll_blk_count += add_col_ref_mv( |
| cm, prev_frame_mvs_base, xd, mi_row, mi_col, ref_frame, blk_row, |
| blk_col, refmv_count, ref_mv_stack, mode_context); |
| } |
| } |
| if (coll_blk_count == 0) mode_context[ref_frame] |= (1 << ZEROMV_OFFSET); |
| } else { |
| mode_context[ref_frame] |= (1 << ZEROMV_OFFSET); |
| } |
| |
| // Scan the second outer area. |
| for (idx = 2; idx <= 4; ++idx) { |
| scan_row_mbmi(cm, xd, mi_row, mi_col, block, rf, -idx, ref_mv_stack, |
| refmv_count); |
| scan_col_mbmi(cm, xd, mi_row, mi_col, block, rf, -idx, ref_mv_stack, |
| refmv_count); |
| } |
| |
| switch (nearest_refmv_count) { |
| case 0: |
| mode_context[ref_frame] |= 0; |
| if (*refmv_count >= 1) mode_context[ref_frame] |= 1; |
| |
| if (*refmv_count == 1) |
| mode_context[ref_frame] |= (1 << REFMV_OFFSET); |
| else if (*refmv_count >= 2) |
| mode_context[ref_frame] |= (2 << REFMV_OFFSET); |
| break; |
| case 1: |
| mode_context[ref_frame] |= (newmv_count > 0) ? 2 : 3; |
| |
| if (*refmv_count == 1) |
| mode_context[ref_frame] |= (3 << REFMV_OFFSET); |
| else if (*refmv_count >= 2) |
| mode_context[ref_frame] |= (4 << REFMV_OFFSET); |
| break; |
| |
| case 2: |
| default: |
| if (newmv_count >= 2) |
| mode_context[ref_frame] |= 4; |
| else if (newmv_count == 1) |
| mode_context[ref_frame] |= 5; |
| else |
| mode_context[ref_frame] |= 6; |
| |
| mode_context[ref_frame] |= (5 << REFMV_OFFSET); |
| break; |
| } |
| |
| // Rank the likelihood and assign nearest and near mvs. |
| len = nearest_refmv_count; |
| while (len > 0) { |
| nr_len = 0; |
| for (idx = 1; idx < len; ++idx) { |
| if (ref_mv_stack[idx - 1].weight < ref_mv_stack[idx].weight) { |
| tmp_mv = ref_mv_stack[idx - 1]; |
| ref_mv_stack[idx - 1] = ref_mv_stack[idx]; |
| ref_mv_stack[idx] = tmp_mv; |
| nr_len = idx; |
| } |
| } |
| len = nr_len; |
| } |
| |
| len = *refmv_count; |
| while (len > nearest_refmv_count) { |
| nr_len = nearest_refmv_count; |
| for (idx = nearest_refmv_count + 1; idx < len; ++idx) { |
| if (ref_mv_stack[idx - 1].weight < ref_mv_stack[idx].weight) { |
| tmp_mv = ref_mv_stack[idx - 1]; |
| ref_mv_stack[idx - 1] = ref_mv_stack[idx]; |
| ref_mv_stack[idx] = tmp_mv; |
| nr_len = idx; |
| } |
| } |
| len = nr_len; |
| } |
| |
| // TODO(jingning): Clean-up needed. |
| if (xd->is_sec_rect) { |
| if (xd->n8_w < xd->n8_h) { |
| const MODE_INFO *const candidate_mi = xd->mi[-1]; |
| const MB_MODE_INFO *const candidate = &candidate_mi->mbmi; |
| handle_sec_rect_block(candidate, nearest_refmv_count, ref_mv_stack, |
| ref_frame, mode_context); |
| } |
| |
| if (xd->n8_w > xd->n8_h) { |
| const MODE_INFO *const candidate_mi = xd->mi[-xd->mi_stride]; |
| const MB_MODE_INFO *const candidate = &candidate_mi->mbmi; |
| handle_sec_rect_block(candidate, nearest_refmv_count, ref_mv_stack, |
| ref_frame, mode_context); |
| } |
| } |
| |
| if (rf[1] > NONE) { |
| for (idx = 0; idx < *refmv_count; ++idx) { |
| clamp_mv_ref(&ref_mv_stack[idx].this_mv.as_mv, xd->n8_w << 3, |
| xd->n8_h << 3, xd); |
| clamp_mv_ref(&ref_mv_stack[idx].comp_mv.as_mv, xd->n8_w << 3, |
| xd->n8_h << 3, xd); |
| } |
| } else { |
| for (idx = 0; idx < AOMMIN(MAX_MV_REF_CANDIDATES, *refmv_count); ++idx) { |
| mv_ref_list[idx].as_int = ref_mv_stack[idx].this_mv.as_int; |
| clamp_mv_ref(&mv_ref_list[idx].as_mv, xd->n8_w << 3, xd->n8_h << 3, xd); |
| } |
| } |
| } |
| #endif |
| |
| // This function searches the neighbourhood of a given MB/SB |
| // to try and find candidate reference vectors. |
| static void find_mv_refs_idx(const AV1_COMMON *cm, const MACROBLOCKD *xd, |
| MODE_INFO *mi, MV_REFERENCE_FRAME ref_frame, |
| int_mv *mv_ref_list, int block, int mi_row, |
| int mi_col, find_mv_refs_sync sync, |
| void *const data, int16_t *mode_context) { |
| const int *ref_sign_bias = cm->ref_frame_sign_bias; |
| int i, refmv_count = 0; |
| const POSITION *const mv_ref_search = mv_ref_blocks[mi->mbmi.sb_type]; |
| int different_ref_found = 0; |
| int context_counter = 0; |
| const MV_REF *const prev_frame_mvs = |
| cm->use_prev_frame_mvs |
| ? cm->prev_frame->mvs + mi_row * cm->mi_cols + mi_col |
| : NULL; |
| const TileInfo *const tile = &xd->tile; |
| const int bw = num_8x8_blocks_wide_lookup[mi->mbmi.sb_type] << 3; |
| const int bh = num_8x8_blocks_high_lookup[mi->mbmi.sb_type] << 3; |
| |
| // The nearest 2 blocks are treated differently |
| // if the size < 8x8 we get the mv from the bmi substructure, |
| // and we also need to keep a mode count. |
| for (i = 0; i < 2; ++i) { |
| const POSITION *const mv_ref = &mv_ref_search[i]; |
| if (is_inside(tile, mi_col, mi_row, mv_ref)) { |
| const MODE_INFO *const candidate_mi = |
| xd->mi[mv_ref->col + mv_ref->row * xd->mi_stride]; |
| const MB_MODE_INFO *const candidate = &candidate_mi->mbmi; |
| // Keep counts for entropy encoding. |
| context_counter += mode_2_counter[candidate->mode]; |
| different_ref_found = 1; |
| |
| if (candidate->ref_frame[0] == ref_frame) |
| ADD_MV_REF_LIST(get_sub_block_mv(candidate_mi, 0, mv_ref->col, block), |
| refmv_count, mv_ref_list, bw, bh, xd, Done); |
| else if (candidate->ref_frame[1] == ref_frame) |
| ADD_MV_REF_LIST(get_sub_block_mv(candidate_mi, 1, mv_ref->col, block), |
| refmv_count, mv_ref_list, bw, bh, xd, Done); |
| } |
| } |
| |
| // Check the rest of the neighbors in much the same way |
| // as before except we don't need to keep track of sub blocks or |
| // mode counts. |
| for (; i < MVREF_NEIGHBOURS; ++i) { |
| const POSITION *const mv_ref = &mv_ref_search[i]; |
| if (is_inside(tile, mi_col, mi_row, mv_ref)) { |
| const MB_MODE_INFO *const candidate = |
| &xd->mi[mv_ref->col + mv_ref->row * xd->mi_stride]->mbmi; |
| different_ref_found = 1; |
| |
| if (candidate->ref_frame[0] == ref_frame) |
| ADD_MV_REF_LIST(candidate->mv[0], refmv_count, mv_ref_list, bw, bh, xd, |
| Done); |
| else if (candidate->ref_frame[1] == ref_frame) |
| ADD_MV_REF_LIST(candidate->mv[1], refmv_count, mv_ref_list, bw, bh, xd, |
| Done); |
| } |
| } |
| |
| // TODO(hkuang): Remove this sync after fixing pthread_cond_broadcast |
| // on windows platform. The sync here is unncessary if use_perv_frame_mvs |
| // is 0. But after removing it, there will be hang in the unit test on windows |
| // due to several threads waiting for a thread's signal. |
| #if defined(_WIN32) && !HAVE_PTHREAD_H |
| if (cm->frame_parallel_decode && sync != NULL) { |
| sync(data, mi_row); |
| } |
| #endif |
| |
| // Check the last frame's mode and mv info. |
| if (cm->use_prev_frame_mvs) { |
| // Synchronize here for frame parallel decode if sync function is provided. |
| if (cm->frame_parallel_decode && sync != NULL) { |
| sync(data, mi_row); |
| } |
| |
| if (prev_frame_mvs->ref_frame[0] == ref_frame) { |
| ADD_MV_REF_LIST(prev_frame_mvs->mv[0], refmv_count, mv_ref_list, bw, bh, |
| xd, Done); |
| } else if (prev_frame_mvs->ref_frame[1] == ref_frame) { |
| ADD_MV_REF_LIST(prev_frame_mvs->mv[1], refmv_count, mv_ref_list, bw, bh, |
| xd, Done); |
| } |
| } |
| |
| // Since we couldn't find 2 mvs from the same reference frame |
| // go back through the neighbors and find motion vectors from |
| // different reference frames. |
| if (different_ref_found) { |
| for (i = 0; i < MVREF_NEIGHBOURS; ++i) { |
| const POSITION *mv_ref = &mv_ref_search[i]; |
| if (is_inside(tile, mi_col, mi_row, mv_ref)) { |
| const MB_MODE_INFO *const candidate = |
| &xd->mi[mv_ref->col + mv_ref->row * xd->mi_stride]->mbmi; |
| |
| // If the candidate is INTRA we don't want to consider its mv. |
| IF_DIFF_REF_FRAME_ADD_MV(candidate, ref_frame, ref_sign_bias, |
| refmv_count, mv_ref_list, bw, bh, xd, Done); |
| } |
| } |
| } |
| |
| // Since we still don't have a candidate we'll try the last frame. |
| if (cm->use_prev_frame_mvs) { |
| if (prev_frame_mvs->ref_frame[0] != ref_frame && |
| prev_frame_mvs->ref_frame[0] > INTRA_FRAME) { |
| int_mv mv = prev_frame_mvs->mv[0]; |
| if (ref_sign_bias[prev_frame_mvs->ref_frame[0]] != |
| ref_sign_bias[ref_frame]) { |
| mv.as_mv.row *= -1; |
| mv.as_mv.col *= -1; |
| } |
| ADD_MV_REF_LIST(mv, refmv_count, mv_ref_list, bw, bh, xd, Done); |
| } |
| |
| if (prev_frame_mvs->ref_frame[1] > INTRA_FRAME && |
| prev_frame_mvs->ref_frame[1] != ref_frame) { |
| int_mv mv = prev_frame_mvs->mv[1]; |
| if (ref_sign_bias[prev_frame_mvs->ref_frame[1]] != |
| ref_sign_bias[ref_frame]) { |
| mv.as_mv.row *= -1; |
| mv.as_mv.col *= -1; |
| } |
| ADD_MV_REF_LIST(mv, refmv_count, mv_ref_list, bw, bh, xd, Done); |
| } |
| } |
| |
| Done: |
| if (mode_context) |
| mode_context[ref_frame] = counter_to_context[context_counter]; |
| for (i = refmv_count; i < MAX_MV_REF_CANDIDATES; ++i) |
| mv_ref_list[i].as_int = 0; |
| } |
| |
| #if CONFIG_EXT_INTER |
| // This function keeps a mode count for a given MB/SB |
| void av1_update_mv_context(const MACROBLOCKD *xd, MODE_INFO *mi, |
| MV_REFERENCE_FRAME ref_frame, int_mv *mv_ref_list, |
| int block, int mi_row, int mi_col, |
| int16_t *mode_context) { |
| int i, refmv_count = 0; |
| const POSITION *const mv_ref_search = mv_ref_blocks[mi->mbmi.sb_type]; |
| int context_counter = 0; |
| const int bw = num_8x8_blocks_wide_lookup[mi->mbmi.sb_type] << 3; |
| const int bh = num_8x8_blocks_high_lookup[mi->mbmi.sb_type] << 3; |
| const TileInfo *const tile = &xd->tile; |
| |
| // Blank the reference vector list |
| memset(mv_ref_list, 0, sizeof(*mv_ref_list) * MAX_MV_REF_CANDIDATES); |
| |
| // The nearest 2 blocks are examined only. |
| // If the size < 8x8, we get the mv from the bmi substructure; |
| for (i = 0; i < 2; ++i) { |
| const POSITION *const mv_ref = &mv_ref_search[i]; |
| if (is_inside(tile, mi_col, mi_row, mv_ref)) { |
| const MODE_INFO *const candidate_mi = |
| xd->mi[mv_ref->col + mv_ref->row * xd->mi_stride]; |
| const MB_MODE_INFO *const candidate = &candidate_mi->mbmi; |
| |
| // Keep counts for entropy encoding. |
| context_counter += mode_2_counter[candidate->mode]; |
| |
| if (candidate->ref_frame[0] == ref_frame) { |
| ADD_MV_REF_LIST(get_sub_block_mv(candidate_mi, 0, mv_ref->col, block), |
| refmv_count, mv_ref_list, bw, bh, xd, Done); |
| } else if (candidate->ref_frame[1] == ref_frame) { |
| ADD_MV_REF_LIST(get_sub_block_mv(candidate_mi, 1, mv_ref->col, block), |
| refmv_count, mv_ref_list, bw, bh, xd, Done); |
| } |
| } |
| } |
| |
| Done: |
| |
| if (mode_context) |
| mode_context[ref_frame] = counter_to_context[context_counter]; |
| } |
| #endif // CONFIG_EXT_INTER |
| |
| void av1_find_mv_refs(const AV1_COMMON *cm, const MACROBLOCKD *xd, |
| MODE_INFO *mi, MV_REFERENCE_FRAME ref_frame, |
| #if CONFIG_REF_MV |
| uint8_t *ref_mv_count, CANDIDATE_MV *ref_mv_stack, |
| #if CONFIG_EXT_INTER |
| int16_t *compound_mode_context, |
| #endif // CONFIG_EXT_INTER |
| #endif |
| int_mv *mv_ref_list, int mi_row, int mi_col, |
| find_mv_refs_sync sync, void *const data, |
| int16_t *mode_context) { |
| #if CONFIG_REF_MV |
| int idx, all_zero = 1; |
| #endif |
| #if CONFIG_EXT_INTER |
| av1_update_mv_context(xd, mi, ref_frame, mv_ref_list, -1, mi_row, mi_col, |
| #if CONFIG_REF_MV |
| compound_mode_context); |
| #else |
| mode_context); |
| #endif // CONFIG_REF_MV |
| #endif // CONFIG_EXT_INTER |
| #if CONFIG_REF_MV |
| if (ref_frame <= ALTREF_FRAME) |
| find_mv_refs_idx(cm, xd, mi, ref_frame, mv_ref_list, -1, mi_row, mi_col, |
| sync, data, mode_context); |
| #else |
| find_mv_refs_idx(cm, xd, mi, ref_frame, mv_ref_list, -1, mi_row, mi_col, sync, |
| data, mode_context); |
| #endif // CONFIG_REF_MV |
| |
| #if CONFIG_REF_MV |
| setup_ref_mv_list(cm, xd, ref_frame, ref_mv_count, ref_mv_stack, mv_ref_list, |
| -1, mi_row, mi_col, mode_context); |
| |
| if (*ref_mv_count >= 2) { |
| for (idx = 0; idx < AOMMIN(3, *ref_mv_count); ++idx) { |
| if (ref_mv_stack[idx].this_mv.as_int != 0) all_zero = 0; |
| if (ref_frame > ALTREF_FRAME) |
| if (ref_mv_stack[idx].comp_mv.as_int != 0) all_zero = 0; |
| } |
| } else if (ref_frame <= ALTREF_FRAME) { |
| for (idx = 0; idx < MAX_MV_REF_CANDIDATES; ++idx) |
| if (mv_ref_list[idx].as_int != 0) all_zero = 0; |
| } |
| |
| if (all_zero) mode_context[ref_frame] |= (1 << ALL_ZERO_FLAG_OFFSET); |
| #endif |
| } |
| |
| void av1_find_best_ref_mvs(int allow_hp, int_mv *mvlist, int_mv *nearest_mv, |
| int_mv *near_mv) { |
| int i; |
| // Make sure all the candidates are properly clamped etc |
| for (i = 0; i < MAX_MV_REF_CANDIDATES; ++i) { |
| lower_mv_precision(&mvlist[i].as_mv, allow_hp); |
| } |
| *nearest_mv = mvlist[0]; |
| *near_mv = mvlist[1]; |
| } |
| |
| void av1_append_sub8x8_mvs_for_idx(AV1_COMMON *cm, MACROBLOCKD *xd, int block, |
| int ref, int mi_row, int mi_col, |
| #if CONFIG_REF_MV |
| CANDIDATE_MV *ref_mv_stack, |
| uint8_t *ref_mv_count, |
| #endif |
| #if CONFIG_EXT_INTER |
| int_mv *mv_list, |
| #endif // CONFIG_EXT_INTER |
| int_mv *nearest_mv, int_mv *near_mv) { |
| #if !CONFIG_EXT_INTER |
| int_mv mv_list[MAX_MV_REF_CANDIDATES]; |
| #endif // !CONFIG_EXT_INTER |
| MODE_INFO *const mi = xd->mi[0]; |
| b_mode_info *bmi = mi->bmi; |
| int n; |
| #if CONFIG_REF_MV |
| CANDIDATE_MV tmp_mv; |
| uint8_t idx; |
| uint8_t above_count = 0, left_count = 0; |
| MV_REFERENCE_FRAME rf[2] = { mi->mbmi.ref_frame[ref], NONE }; |
| *ref_mv_count = 0; |
| #endif |
| |
| assert(MAX_MV_REF_CANDIDATES == 2); |
| |
| find_mv_refs_idx(cm, xd, mi, mi->mbmi.ref_frame[ref], mv_list, block, mi_row, |
| mi_col, NULL, NULL, NULL); |
| |
| #if CONFIG_REF_MV |
| scan_blk_mbmi(cm, xd, mi_row, mi_col, block, rf, -1, 0, ref_mv_stack, |
| ref_mv_count); |
| above_count = *ref_mv_count; |
| |
| scan_blk_mbmi(cm, xd, mi_row, mi_col, block, rf, 0, -1, ref_mv_stack, |
| ref_mv_count); |
| left_count = *ref_mv_count - above_count; |
| |
| if (above_count > 1 && left_count > 0) { |
| tmp_mv = ref_mv_stack[1]; |
| ref_mv_stack[1] = ref_mv_stack[above_count]; |
| ref_mv_stack[above_count] = tmp_mv; |
| } |
| |
| for (idx = 0; idx < *ref_mv_count; ++idx) |
| clamp_mv_ref(&ref_mv_stack[idx].this_mv.as_mv, xd->n8_w << 3, xd->n8_h << 3, |
| xd); |
| |
| for (idx = 0; idx < AOMMIN(MAX_MV_REF_CANDIDATES, *ref_mv_count); ++idx) |
| mv_list[idx].as_int = ref_mv_stack[idx].this_mv.as_int; |
| #endif |
| |
| near_mv->as_int = 0; |
| switch (block) { |
| case 0: |
| nearest_mv->as_int = mv_list[0].as_int; |
| near_mv->as_int = mv_list[1].as_int; |
| break; |
| case 1: |
| case 2: |
| nearest_mv->as_int = bmi[0].as_mv[ref].as_int; |
| for (n = 0; n < MAX_MV_REF_CANDIDATES; ++n) |
| if (nearest_mv->as_int != mv_list[n].as_int) { |
| near_mv->as_int = mv_list[n].as_int; |
| break; |
| } |
| break; |
| case 3: { |
| int_mv candidates[2 + MAX_MV_REF_CANDIDATES]; |
| candidates[0] = bmi[1].as_mv[ref]; |
| candidates[1] = bmi[0].as_mv[ref]; |
| candidates[2] = mv_list[0]; |
| candidates[3] = mv_list[1]; |
| |
| nearest_mv->as_int = bmi[2].as_mv[ref].as_int; |
| for (n = 0; n < 2 + MAX_MV_REF_CANDIDATES; ++n) |
| if (nearest_mv->as_int != candidates[n].as_int) { |
| near_mv->as_int = candidates[n].as_int; |
| break; |
| } |
| break; |
| } |
| default: assert(0 && "Invalid block index."); |
| } |
| } |
