491 lines
19 KiB
C
491 lines
19 KiB
C
/*
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* Copyright (c) 2016, Alliance for Open Media. All rights reserved.
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*
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* This source code is subject to the terms of the BSD 2 Clause License and
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* the Alliance for Open Media Patent License 1.0. If the BSD 2 Clause License
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* was not distributed with this source code in the LICENSE file, you can
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* obtain it at www.aomedia.org/license/software. If the Alliance for Open
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* Media Patent License 1.0 was not distributed with this source code in the
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* PATENTS file, you can obtain it at www.aomedia.org/license/patent.
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*/
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#ifndef AOM_AV1_COMMON_RECONINTER_H_
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#define AOM_AV1_COMMON_RECONINTER_H_
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#include "av1/common/av1_common_int.h"
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#include "av1/common/convolve.h"
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#include "av1/common/filter.h"
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#include "av1/common/warped_motion.h"
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#include "aom/aom_integer.h"
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// Work out how many pixels off the edge of a reference frame we're allowed
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// to go when forming an inter prediction.
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// The outermost row/col of each referernce frame is extended by
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// (AOM_BORDER_IN_PIXELS >> subsampling) pixels, but we need to keep
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// at least AOM_INTERP_EXTEND pixels within that to account for filtering.
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//
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// We have to break this up into two macros to keep both clang-format and
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// tools/lint-hunks.py happy.
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#define AOM_LEFT_TOP_MARGIN_PX(subsampling) \
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((AOM_BORDER_IN_PIXELS >> subsampling) - AOM_INTERP_EXTEND)
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#define AOM_LEFT_TOP_MARGIN_SCALED(subsampling) \
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(AOM_LEFT_TOP_MARGIN_PX(subsampling) << SCALE_SUBPEL_BITS)
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#ifdef __cplusplus
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extern "C" {
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#endif
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#define MAX_WEDGE_TYPES 16
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#define MAX_WEDGE_SIZE_LOG2 5 // 32x32
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#define MAX_WEDGE_SIZE (1 << MAX_WEDGE_SIZE_LOG2)
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#define MAX_WEDGE_SQUARE (MAX_WEDGE_SIZE * MAX_WEDGE_SIZE)
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#define WEDGE_WEIGHT_BITS 6
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#define WEDGE_NONE -1
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// Angles are with respect to horizontal anti-clockwise
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enum {
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WEDGE_HORIZONTAL = 0,
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WEDGE_VERTICAL = 1,
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WEDGE_OBLIQUE27 = 2,
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WEDGE_OBLIQUE63 = 3,
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WEDGE_OBLIQUE117 = 4,
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WEDGE_OBLIQUE153 = 5,
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WEDGE_DIRECTIONS
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} UENUM1BYTE(WedgeDirectionType);
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// 3-tuple: {direction, x_offset, y_offset}
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typedef struct {
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WedgeDirectionType direction;
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int x_offset;
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int y_offset;
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} wedge_code_type;
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typedef uint8_t *wedge_masks_type[MAX_WEDGE_TYPES];
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typedef struct {
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int wedge_types;
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const wedge_code_type *codebook;
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uint8_t *signflip;
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wedge_masks_type *masks;
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} wedge_params_type;
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extern const wedge_params_type av1_wedge_params_lookup[BLOCK_SIZES_ALL];
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typedef struct SubpelParams {
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int xs;
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int ys;
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int subpel_x;
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int subpel_y;
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int pos_x;
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int pos_y;
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} SubpelParams;
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struct build_prediction_ctxt {
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const AV1_COMMON *cm;
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uint8_t **tmp_buf;
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int *tmp_width;
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int *tmp_height;
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int *tmp_stride;
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int mb_to_far_edge;
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void *dcb; // Decoder-only coding block.
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};
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typedef enum InterPredMode {
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TRANSLATION_PRED,
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WARP_PRED,
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} InterPredMode;
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typedef enum InterCompMode {
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UNIFORM_SINGLE,
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UNIFORM_COMP,
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MASK_COMP,
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} InterCompMode;
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typedef struct InterPredParams {
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InterPredMode mode;
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InterCompMode comp_mode;
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WarpedMotionParams warp_params;
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ConvolveParams conv_params;
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const InterpFilterParams *interp_filter_params[2];
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int block_width;
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int block_height;
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int pix_row;
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int pix_col;
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struct buf_2d ref_frame_buf;
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int subsampling_x;
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int subsampling_y;
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const struct scale_factors *scale_factors;
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int bit_depth;
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int use_hbd_buf;
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INTERINTER_COMPOUND_DATA mask_comp;
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BLOCK_SIZE sb_type;
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int is_intrabc;
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int top;
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int left;
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} InterPredParams;
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// Initialize sub-pel params required for inter prediction.
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static inline void init_subpel_params(const MV *const src_mv,
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InterPredParams *const inter_pred_params,
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SubpelParams *subpel_params, int width,
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int height) {
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const struct scale_factors *sf = inter_pred_params->scale_factors;
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int ssx = inter_pred_params->subsampling_x;
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int ssy = inter_pred_params->subsampling_y;
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int orig_pos_y = inter_pred_params->pix_row << SUBPEL_BITS;
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orig_pos_y += src_mv->row * (1 << (1 - ssy));
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int orig_pos_x = inter_pred_params->pix_col << SUBPEL_BITS;
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orig_pos_x += src_mv->col * (1 << (1 - ssx));
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const int is_scaled = av1_is_scaled(sf);
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int pos_x, pos_y;
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if (LIKELY(!is_scaled)) {
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pos_y = av1_unscaled_value(orig_pos_y, sf);
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pos_x = av1_unscaled_value(orig_pos_x, sf);
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} else {
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pos_y = av1_scaled_y(orig_pos_y, sf);
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pos_x = av1_scaled_x(orig_pos_x, sf);
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}
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pos_x += SCALE_EXTRA_OFF;
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pos_y += SCALE_EXTRA_OFF;
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const int bottom = (height + AOM_INTERP_EXTEND) << SCALE_SUBPEL_BITS;
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const int right = (width + AOM_INTERP_EXTEND) << SCALE_SUBPEL_BITS;
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pos_y = clamp(pos_y, inter_pred_params->top, bottom);
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pos_x = clamp(pos_x, inter_pred_params->left, right);
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subpel_params->pos_x = pos_x;
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subpel_params->pos_y = pos_y;
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subpel_params->subpel_x = pos_x & SCALE_SUBPEL_MASK;
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subpel_params->subpel_y = pos_y & SCALE_SUBPEL_MASK;
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subpel_params->xs = sf->x_step_q4;
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subpel_params->ys = sf->y_step_q4;
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}
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// Initialize interp filter required for inter prediction.
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static inline void init_interp_filter_params(
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const InterpFilterParams *interp_filter_params[2],
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const InterpFilters *filter, int block_width, int block_height,
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int is_intrabc) {
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if (UNLIKELY(is_intrabc)) {
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interp_filter_params[0] = &av1_intrabc_filter_params;
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interp_filter_params[1] = &av1_intrabc_filter_params;
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} else {
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interp_filter_params[0] = av1_get_interp_filter_params_with_block_size(
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(InterpFilter)filter->x_filter, block_width);
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interp_filter_params[1] = av1_get_interp_filter_params_with_block_size(
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(InterpFilter)filter->y_filter, block_height);
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}
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}
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// Initialize parameters required for inter prediction at mode level.
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static inline void init_inter_mode_params(
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const MV *const src_mv, InterPredParams *const inter_pred_params,
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SubpelParams *subpel_params, const struct scale_factors *sf, int width,
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int height) {
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inter_pred_params->scale_factors = sf;
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init_subpel_params(src_mv, inter_pred_params, subpel_params, width, height);
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}
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// Initialize parameters required for inter prediction at block level.
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static inline void init_inter_block_params(InterPredParams *inter_pred_params,
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int block_width, int block_height,
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int pix_row, int pix_col,
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int subsampling_x, int subsampling_y,
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int bit_depth, int use_hbd_buf,
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int is_intrabc) {
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inter_pred_params->block_width = block_width;
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inter_pred_params->block_height = block_height;
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inter_pred_params->pix_row = pix_row;
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inter_pred_params->pix_col = pix_col;
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inter_pred_params->subsampling_x = subsampling_x;
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inter_pred_params->subsampling_y = subsampling_y;
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inter_pred_params->bit_depth = bit_depth;
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inter_pred_params->use_hbd_buf = use_hbd_buf;
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inter_pred_params->is_intrabc = is_intrabc;
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inter_pred_params->mode = TRANSLATION_PRED;
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inter_pred_params->comp_mode = UNIFORM_SINGLE;
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inter_pred_params->top = -AOM_LEFT_TOP_MARGIN_SCALED(subsampling_y);
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inter_pred_params->left = -AOM_LEFT_TOP_MARGIN_SCALED(subsampling_x);
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}
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// Initialize params required for inter prediction.
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static inline void av1_init_inter_params(
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InterPredParams *inter_pred_params, int block_width, int block_height,
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int pix_row, int pix_col, int subsampling_x, int subsampling_y,
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int bit_depth, int use_hbd_buf, int is_intrabc,
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const struct scale_factors *sf, const struct buf_2d *ref_buf,
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int_interpfilters interp_filters) {
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init_inter_block_params(inter_pred_params, block_width, block_height, pix_row,
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pix_col, subsampling_x, subsampling_y, bit_depth,
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use_hbd_buf, is_intrabc);
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init_interp_filter_params(inter_pred_params->interp_filter_params,
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&interp_filters.as_filters, block_width,
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block_height, is_intrabc);
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inter_pred_params->scale_factors = sf;
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inter_pred_params->ref_frame_buf = *ref_buf;
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}
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static inline void av1_init_comp_mode(InterPredParams *inter_pred_params) {
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inter_pred_params->comp_mode = UNIFORM_COMP;
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}
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void av1_init_warp_params(InterPredParams *inter_pred_params,
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const WarpTypesAllowed *warp_types, int ref,
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const MACROBLOCKD *xd, const MB_MODE_INFO *mi);
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static inline int has_scale(int xs, int ys) {
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return xs != SCALE_SUBPEL_SHIFTS || ys != SCALE_SUBPEL_SHIFTS;
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}
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static inline void revert_scale_extra_bits(SubpelParams *sp) {
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sp->subpel_x >>= SCALE_EXTRA_BITS;
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sp->subpel_y >>= SCALE_EXTRA_BITS;
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sp->xs >>= SCALE_EXTRA_BITS;
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sp->ys >>= SCALE_EXTRA_BITS;
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assert(sp->subpel_x < SUBPEL_SHIFTS);
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assert(sp->subpel_y < SUBPEL_SHIFTS);
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assert(sp->xs <= SUBPEL_SHIFTS);
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assert(sp->ys <= SUBPEL_SHIFTS);
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}
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static inline void inter_predictor(
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const uint8_t *src, int src_stride, uint8_t *dst, int dst_stride,
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const SubpelParams *subpel_params, int w, int h,
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ConvolveParams *conv_params, const InterpFilterParams *interp_filters[2]) {
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assert(conv_params->do_average == 0 || conv_params->do_average == 1);
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const int is_scaled = has_scale(subpel_params->xs, subpel_params->ys);
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if (is_scaled) {
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av1_convolve_2d_facade(src, src_stride, dst, dst_stride, w, h,
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interp_filters, subpel_params->subpel_x,
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subpel_params->xs, subpel_params->subpel_y,
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subpel_params->ys, 1, conv_params);
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} else {
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SubpelParams sp = *subpel_params;
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revert_scale_extra_bits(&sp);
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av1_convolve_2d_facade(src, src_stride, dst, dst_stride, w, h,
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interp_filters, sp.subpel_x, sp.xs, sp.subpel_y,
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sp.ys, 0, conv_params);
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}
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}
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static inline void highbd_inter_predictor(
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const uint8_t *src, int src_stride, uint8_t *dst, int dst_stride,
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const SubpelParams *subpel_params, int w, int h,
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ConvolveParams *conv_params, const InterpFilterParams *interp_filters[2],
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int bd) {
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assert(conv_params->do_average == 0 || conv_params->do_average == 1);
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const int is_scaled = has_scale(subpel_params->xs, subpel_params->ys);
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if (is_scaled) {
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av1_highbd_convolve_2d_facade(src, src_stride, dst, dst_stride, w, h,
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interp_filters, subpel_params->subpel_x,
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subpel_params->xs, subpel_params->subpel_y,
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subpel_params->ys, 1, conv_params, bd);
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} else {
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SubpelParams sp = *subpel_params;
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revert_scale_extra_bits(&sp);
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av1_highbd_convolve_2d_facade(src, src_stride, dst, dst_stride, w, h,
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interp_filters, sp.subpel_x, sp.xs,
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sp.subpel_y, sp.ys, 0, conv_params, bd);
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}
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}
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int av1_skip_u4x4_pred_in_obmc(BLOCK_SIZE bsize,
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const struct macroblockd_plane *pd, int dir);
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static inline int is_interinter_compound_used(COMPOUND_TYPE type,
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BLOCK_SIZE sb_type) {
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const int comp_allowed = is_comp_ref_allowed(sb_type);
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switch (type) {
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case COMPOUND_AVERAGE:
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case COMPOUND_DISTWTD:
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case COMPOUND_DIFFWTD: return comp_allowed;
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case COMPOUND_WEDGE:
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return comp_allowed && av1_wedge_params_lookup[sb_type].wedge_types > 0;
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default: assert(0); return 0;
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}
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}
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static inline int is_any_masked_compound_used(BLOCK_SIZE sb_type) {
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COMPOUND_TYPE comp_type;
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int i;
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if (!is_comp_ref_allowed(sb_type)) return 0;
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for (i = 0; i < COMPOUND_TYPES; i++) {
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comp_type = (COMPOUND_TYPE)i;
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if (is_masked_compound_type(comp_type) &&
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is_interinter_compound_used(comp_type, sb_type))
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return 1;
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}
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return 0;
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}
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static inline int get_wedge_types_lookup(BLOCK_SIZE sb_type) {
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return av1_wedge_params_lookup[sb_type].wedge_types;
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}
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static inline int av1_is_wedge_used(BLOCK_SIZE sb_type) {
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return av1_wedge_params_lookup[sb_type].wedge_types > 0;
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}
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void av1_make_inter_predictor(const uint8_t *src, int src_stride, uint8_t *dst,
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int dst_stride,
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InterPredParams *inter_pred_params,
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const SubpelParams *subpel_params);
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void av1_make_masked_inter_predictor(const uint8_t *pre, int pre_stride,
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uint8_t *dst, int dst_stride,
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InterPredParams *inter_pred_params,
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const SubpelParams *subpel_params);
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// TODO(jkoleszar): yet another mv clamping function :-(
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static inline MV clamp_mv_to_umv_border_sb(const MACROBLOCKD *xd,
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const MV *src_mv, int bw, int bh,
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int ss_x, int ss_y) {
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// If the MV points so far into the UMV border that no visible pixels
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// are used for reconstruction, the subpel part of the MV can be
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// discarded and the MV limited to 16 pixels with equivalent results.
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const int spel_left = (AOM_INTERP_EXTEND + bw) << SUBPEL_BITS;
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const int spel_right = spel_left - SUBPEL_SHIFTS;
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const int spel_top = (AOM_INTERP_EXTEND + bh) << SUBPEL_BITS;
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const int spel_bottom = spel_top - SUBPEL_SHIFTS;
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MV clamped_mv = { (int16_t)(src_mv->row * (1 << (1 - ss_y))),
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(int16_t)(src_mv->col * (1 << (1 - ss_x))) };
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assert(ss_x <= 1);
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assert(ss_y <= 1);
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const SubpelMvLimits mv_limits = {
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xd->mb_to_left_edge * (1 << (1 - ss_x)) - spel_left,
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xd->mb_to_right_edge * (1 << (1 - ss_x)) + spel_right,
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xd->mb_to_top_edge * (1 << (1 - ss_y)) - spel_top,
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xd->mb_to_bottom_edge * (1 << (1 - ss_y)) + spel_bottom
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};
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clamp_mv(&clamped_mv, &mv_limits);
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return clamped_mv;
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}
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static inline int64_t scaled_buffer_offset(int x_offset, int y_offset,
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int stride,
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const struct scale_factors *sf) {
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int x, y;
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if (!sf) {
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x = x_offset;
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y = y_offset;
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} else if (av1_is_scaled(sf)) {
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x = av1_scaled_x(x_offset, sf) >> SCALE_EXTRA_BITS;
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y = av1_scaled_y(y_offset, sf) >> SCALE_EXTRA_BITS;
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} else {
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x = av1_unscaled_value(x_offset, sf) >> SCALE_EXTRA_BITS;
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y = av1_unscaled_value(y_offset, sf) >> SCALE_EXTRA_BITS;
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}
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return (int64_t)y * stride + x;
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}
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static inline void setup_pred_plane(struct buf_2d *dst, BLOCK_SIZE bsize,
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uint8_t *src, int width, int height,
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int stride, int mi_row, int mi_col,
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const struct scale_factors *scale,
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int subsampling_x, int subsampling_y) {
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// Offset the buffer pointer
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if (subsampling_y && (mi_row & 0x01) && (mi_size_high[bsize] == 1))
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mi_row -= 1;
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if (subsampling_x && (mi_col & 0x01) && (mi_size_wide[bsize] == 1))
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mi_col -= 1;
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const int x = (MI_SIZE * mi_col) >> subsampling_x;
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const int y = (MI_SIZE * mi_row) >> subsampling_y;
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dst->buf = src + scaled_buffer_offset(x, y, stride, scale);
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dst->buf0 = src;
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dst->width = width;
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dst->height = height;
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dst->stride = stride;
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}
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void av1_setup_dst_planes(struct macroblockd_plane *planes, BLOCK_SIZE bsize,
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const YV12_BUFFER_CONFIG *src, int mi_row, int mi_col,
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const int plane_start, const int plane_end);
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void av1_setup_pre_planes(MACROBLOCKD *xd, int idx,
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const YV12_BUFFER_CONFIG *src, int mi_row, int mi_col,
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const struct scale_factors *sf, const int num_planes);
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static inline void set_default_interp_filters(
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MB_MODE_INFO *const mbmi, InterpFilter frame_interp_filter) {
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mbmi->interp_filters =
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av1_broadcast_interp_filter(av1_unswitchable_filter(frame_interp_filter));
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}
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static inline int av1_is_interp_needed(const MACROBLOCKD *const xd) {
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const MB_MODE_INFO *const mbmi = xd->mi[0];
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if (mbmi->skip_mode) return 0;
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if (mbmi->motion_mode == WARPED_CAUSAL) return 0;
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if (is_nontrans_global_motion(xd, xd->mi[0])) return 0;
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return 1;
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}
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// Sets up buffers 'dst_buf1' and 'dst_buf2' from relevant buffers in 'xd' for
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// subsequent use in OBMC prediction.
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void av1_setup_obmc_dst_bufs(MACROBLOCKD *xd, uint8_t **dst_buf1,
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uint8_t **dst_buf2);
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void av1_setup_build_prediction_by_above_pred(
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MACROBLOCKD *xd, int rel_mi_col, uint8_t above_mi_width,
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MB_MODE_INFO *above_mbmi, struct build_prediction_ctxt *ctxt,
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const int num_planes);
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void av1_setup_build_prediction_by_left_pred(MACROBLOCKD *xd, int rel_mi_row,
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uint8_t left_mi_height,
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MB_MODE_INFO *left_mbmi,
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struct build_prediction_ctxt *ctxt,
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const int num_planes);
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void av1_build_obmc_inter_prediction(const AV1_COMMON *cm, MACROBLOCKD *xd,
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uint8_t *above[MAX_MB_PLANE],
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int above_stride[MAX_MB_PLANE],
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uint8_t *left[MAX_MB_PLANE],
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int left_stride[MAX_MB_PLANE]);
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|
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const uint8_t *av1_get_obmc_mask(int length);
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void av1_count_overlappable_neighbors(const AV1_COMMON *cm, MACROBLOCKD *xd);
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|
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#define MASK_MASTER_SIZE ((MAX_WEDGE_SIZE) << 1)
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#define MASK_MASTER_STRIDE (MASK_MASTER_SIZE)
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|
|
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void av1_init_wedge_masks(void);
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|
|
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static inline const uint8_t *av1_get_contiguous_soft_mask(int8_t wedge_index,
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int8_t wedge_sign,
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BLOCK_SIZE sb_type) {
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return av1_wedge_params_lookup[sb_type].masks[wedge_sign][wedge_index];
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}
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void av1_dist_wtd_comp_weight_assign(const AV1_COMMON *cm,
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const MB_MODE_INFO *mbmi, int *fwd_offset,
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int *bck_offset,
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|
int *use_dist_wtd_comp_avg,
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int is_compound);
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|
|
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const uint8_t *av1_get_compound_type_mask(
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const INTERINTER_COMPOUND_DATA *const comp_data, BLOCK_SIZE sb_type);
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|
|
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// build interintra_predictors for one plane
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void av1_build_interintra_predictor(const AV1_COMMON *cm, MACROBLOCKD *xd,
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uint8_t *pred, int stride,
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const BUFFER_SET *ctx, int plane,
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|
BLOCK_SIZE bsize);
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|
|
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void av1_build_intra_predictors_for_interintra(const AV1_COMMON *cm,
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MACROBLOCKD *xd,
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BLOCK_SIZE bsize, int plane,
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|
const BUFFER_SET *ctx,
|
|
uint8_t *dst, int dst_stride);
|
|
|
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void av1_combine_interintra(MACROBLOCKD *xd, BLOCK_SIZE bsize, int plane,
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|
const uint8_t *inter_pred, int inter_stride,
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|
const uint8_t *intra_pred, int intra_stride);
|
|
|
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#ifdef __cplusplus
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|
} // extern "C"
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|
#endif
|
|
|
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#endif // AOM_AV1_COMMON_RECONINTER_H_
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