reconinter.h 26.5 KB
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/*
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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
 * 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.
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 */

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#ifndef AV1_COMMON_RECONINTER_H_
#define AV1_COMMON_RECONINTER_H_
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#include "av1/common/filter.h"
#include "av1/common/onyxc_int.h"
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#include "av1/common/convolve.h"
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#if CONFIG_GLOBAL_MOTION || CONFIG_WARPED_MOTION
#include "av1/common/warped_motion.h"
#endif  // CONFIG_GLOBAL_MOTION || CONFIG_WARPED_MOTION
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#include "aom/aom_integer.h"
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#if CONFIG_MOTION_VAR && CONFIG_WARPED_MOTION
#define WARP_NEIGHBORS_WITH_OBMC 0
#endif  // CONFIG_MOTION_VAR && CONFIG_WARPED_MOTION

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#ifdef __cplusplus
extern "C" {
#endif

static INLINE void inter_predictor(const uint8_t *src, int src_stride,
                                   uint8_t *dst, int dst_stride,
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                                   const int subpel_x, const int subpel_y,
                                   const struct scale_factors *sf, int w, int h,
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                                   ConvolveParams *conv_params,
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#if CONFIG_DUAL_FILTER
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                                   const InterpFilter *interp_filter,
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#else
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                                   const InterpFilter interp_filter,
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#endif
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                                   int xs, int ys) {
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#if CONFIG_DUAL_FILTER
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  InterpFilter filter_x = av1_get_plane_interp_filter(
      interp_filter[1 + 2 * conv_params->ref], conv_params->plane);
  InterpFilter filter_y = av1_get_plane_interp_filter(
      interp_filter[0 + 2 * conv_params->ref], conv_params->plane);
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  InterpFilterParams interp_filter_params_x =
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      av1_get_interp_filter_params(filter_x);
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  InterpFilterParams interp_filter_params_y =
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      av1_get_interp_filter_params(filter_y);
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#else
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  InterpFilterParams interp_filter_params =
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      av1_get_interp_filter_params(interp_filter);
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#endif

#if CONFIG_DUAL_FILTER
  if (interp_filter_params_x.taps == SUBPEL_TAPS &&
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      interp_filter_params_y.taps == SUBPEL_TAPS && w > 2 && h > 2 &&
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      conv_params->round == CONVOLVE_OPT_ROUND && xs == 16 && ys == 16) {
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    const int16_t *kernel_x =
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        av1_get_interp_filter_subpel_kernel(interp_filter_params_x, subpel_x);
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    const int16_t *kernel_y =
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        av1_get_interp_filter_subpel_kernel(interp_filter_params_y, subpel_y);
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#else
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  if (interp_filter_params.taps == SUBPEL_TAPS && w > 2 && h > 2 &&
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      conv_params->round == CONVOLVE_OPT_ROUND && xs == 16 && ys == 16) {
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    const int16_t *kernel_x =
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        av1_get_interp_filter_subpel_kernel(interp_filter_params, subpel_x);
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    const int16_t *kernel_y =
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        av1_get_interp_filter_subpel_kernel(interp_filter_params, subpel_y);
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#endif
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    sf->predict[subpel_x != 0][subpel_y != 0][conv_params->ref](
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        src, src_stride, dst, dst_stride, kernel_x, xs, kernel_y, ys, w, h);
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  } else {
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// ref_idx > 0 means this is the second reference frame
// first reference frame's prediction result is already in dst
// therefore we need to average the first and second results
#if CONFIG_CONVOLVE_ROUND
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    if (conv_params->round == CONVOLVE_OPT_NO_ROUND && xs == 16 && ys == 16)
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      av1_convolve_2d_facade(src, src_stride, dst, dst_stride, w, h,
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#if CONFIG_DUAL_FILTER
                             interp_filter,
#else
                             &interp_filter,
#endif
                             subpel_x, xs, subpel_y, ys, conv_params);
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    else
#endif
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    {
      if (xs == 16 && ys == 16) {
        av1_convolve(src, src_stride, dst, dst_stride, w, h, interp_filter,
                     subpel_x, xs, subpel_y, ys, conv_params);
      } else {
        // If xs == 16 || ys == 16 scaling is happening and the SSE2
        // instructions don't support scaling; use the C versions to be safe.
        av1_convolve_c(src, src_stride, dst, dst_stride, w, h, interp_filter,
                       subpel_x, xs, subpel_y, ys, conv_params);
      }
    }
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  }
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}

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#if CONFIG_HIGHBITDEPTH
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static INLINE void highbd_inter_predictor(const uint8_t *src, int src_stride,
                                          uint8_t *dst, int dst_stride,
                                          const int subpel_x,
                                          const int subpel_y,
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                                          const struct scale_factors *sf, int w,
                                          int h, int ref,
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#if CONFIG_DUAL_FILTER
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                                          const InterpFilter *interp_filter,
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#else
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                                          const InterpFilter interp_filter,
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#endif
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                                          int xs, int ys, int bd) {
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#if CONFIG_DUAL_FILTER
  InterpFilterParams interp_filter_params_x =
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      av1_get_interp_filter_params(interp_filter[1 + 2 * ref]);
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  InterpFilterParams interp_filter_params_y =
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      av1_get_interp_filter_params(interp_filter[0 + 2 * ref]);
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#else
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  InterpFilterParams interp_filter_params =
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      av1_get_interp_filter_params(interp_filter);
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#endif

#if CONFIG_DUAL_FILTER
  if (interp_filter_params_x.taps == SUBPEL_TAPS &&
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      interp_filter_params_y.taps == SUBPEL_TAPS && w > 2 && h > 2) {
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    const int16_t *kernel_x =
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        av1_get_interp_filter_subpel_kernel(interp_filter_params_x, subpel_x);
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    const int16_t *kernel_y =
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        av1_get_interp_filter_subpel_kernel(interp_filter_params_y, subpel_y);
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#else
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  if (interp_filter_params.taps == SUBPEL_TAPS && w > 2 && h > 2) {
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    const int16_t *kernel_x =
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        av1_get_interp_filter_subpel_kernel(interp_filter_params, subpel_x);
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    const int16_t *kernel_y =
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        av1_get_interp_filter_subpel_kernel(interp_filter_params, subpel_y);
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#endif  // CONFIG_DUAL_FILTER
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    sf->highbd_predict[subpel_x != 0][subpel_y != 0][ref](
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        src, src_stride, dst, dst_stride, kernel_x, xs, kernel_y, ys, w, h, bd);
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  } else {
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    // ref > 0 means this is the second reference frame
    // first reference frame's prediction result is already in dst
    // therefore we need to average the first and second results
    int avg = ref > 0;
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    av1_highbd_convolve(src, src_stride, dst, dst_stride, w, h, interp_filter,
                        subpel_x, xs, subpel_y, ys, avg, bd);
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  }
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}
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#endif  // CONFIG_HIGHBITDEPTH
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#if CONFIG_EXT_INTER
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// Set to one to use larger codebooks
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#define USE_LARGE_WEDGE_CODEBOOK 0
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#if USE_LARGE_WEDGE_CODEBOOK
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#define MAX_WEDGE_TYPES (1 << 5)
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#else
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#define MAX_WEDGE_TYPES (1 << 4)
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#endif

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#define MAX_WEDGE_SIZE_LOG2 5  // 32x32
#define MAX_WEDGE_SIZE (1 << MAX_WEDGE_SIZE_LOG2)
#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
typedef enum {
  WEDGE_HORIZONTAL = 0,
  WEDGE_VERTICAL = 1,
  WEDGE_OBLIQUE27 = 2,
  WEDGE_OBLIQUE63 = 3,
  WEDGE_OBLIQUE117 = 4,
  WEDGE_OBLIQUE153 = 5,
  WEDGE_DIRECTIONS
} WedgeDirectionType;

// 3-tuple: {direction, x_offset, y_offset}
typedef struct {
  WedgeDirectionType direction;
  int x_offset;
  int y_offset;
} wedge_code_type;

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typedef uint8_t *wedge_masks_type[MAX_WEDGE_TYPES];

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typedef struct {
  int bits;
  const wedge_code_type *codebook;
  uint8_t *signflip;
  int smoother;
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  wedge_masks_type *masks;
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} wedge_params_type;

extern const wedge_params_type wedge_params_lookup[BLOCK_SIZES];

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static INLINE int is_interinter_compound_used(COMPOUND_TYPE type,
                                              BLOCK_SIZE sb_type) {
  switch (type) {
    case COMPOUND_AVERAGE: (void)sb_type; return 1;
    case COMPOUND_WEDGE: return wedge_params_lookup[sb_type].bits > 0;
#if CONFIG_COMPOUND_SEGMENT
    case COMPOUND_SEG: return sb_type >= BLOCK_8X8;
#endif  // CONFIG_COMPOUND_SEGMENT
    default: assert(0); return 0;
  }
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}
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static INLINE int is_any_masked_compound_used(BLOCK_SIZE sb_type) {
  COMPOUND_TYPE comp_type;
  for (comp_type = 0; comp_type < COMPOUND_TYPES; comp_type++) {
    if (is_masked_compound_type(comp_type) &&
        is_interinter_compound_used(comp_type, sb_type))
      return 1;
  }
  return 0;
}

static INLINE int get_wedge_bits_lookup(BLOCK_SIZE sb_type) {
  return wedge_params_lookup[sb_type].bits;
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}

static INLINE int get_interinter_wedge_bits(BLOCK_SIZE sb_type) {
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  const int wbits = wedge_params_lookup[sb_type].bits;
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  return (wbits > 0) ? wbits + 1 : 0;
}

static INLINE int is_interintra_wedge_used(BLOCK_SIZE sb_type) {
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  (void)sb_type;
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  return wedge_params_lookup[sb_type].bits > 0;
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}

static INLINE int get_interintra_wedge_bits(BLOCK_SIZE sb_type) {
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  return wedge_params_lookup[sb_type].bits;
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}
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#if CONFIG_COMPOUND_SEGMENT
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void build_compound_seg_mask(uint8_t *mask, SEG_MASK_TYPE mask_type,
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                             const uint8_t *src0, int src0_stride,
                             const uint8_t *src1, int src1_stride,
                             BLOCK_SIZE sb_type, int h, int w);
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#if CONFIG_HIGHBITDEPTH
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void build_compound_seg_mask_highbd(uint8_t *mask, SEG_MASK_TYPE mask_type,
                                    const uint8_t *src0, int src0_stride,
                                    const uint8_t *src1, int src1_stride,
                                    BLOCK_SIZE sb_type, int h, int w, int bd);
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#endif  // CONFIG_HIGHBITDEPTH
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#endif  // CONFIG_COMPOUND_SEGMENT
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#endif  // CONFIG_EXT_INTER

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void build_inter_predictors(MACROBLOCKD *xd, int plane,
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#if CONFIG_MOTION_VAR
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                            int mi_col_offset, int mi_row_offset,
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#endif  // CONFIG_MOTION_VAR
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                            int block, int bw, int bh, int x, int y, int w,
                            int h,
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#if CONFIG_SUPERTX && CONFIG_EXT_INTER
                            int wedge_offset_x, int wedge_offset_y,
#endif  // CONFIG_SUPERTX && CONFIG_EXT_INTER
                            int mi_x, int mi_y);

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static INLINE void av1_make_inter_predictor(
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    const uint8_t *src, int src_stride, uint8_t *dst, int dst_stride,
    const int subpel_x, const int subpel_y, const struct scale_factors *sf,
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    int w, int h, ConvolveParams *conv_params,
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#if CONFIG_DUAL_FILTER
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    const InterpFilter *interp_filter,
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#else
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    const InterpFilter interp_filter,
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#endif
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#if CONFIG_GLOBAL_MOTION
    int is_global, int p_col, int p_row, int plane, int ref,
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#if CONFIG_MOTION_VAR
    int mi_col_offset, int mi_row_offset,
#endif
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#endif  // CONFIG_GLOBAL_MOTION
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    int xs, int ys, const MACROBLOCKD *xd) {
  (void)xd;
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#if CONFIG_GLOBAL_MOTION
  if (is_global) {
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#if CONFIG_MOTION_VAR
    const MODE_INFO *mi = xd->mi[mi_col_offset + xd->mi_stride * mi_row_offset];
#else
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    const MODE_INFO *mi = xd->mi[0];
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#endif
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    const struct macroblockd_plane *const pd = &xd->plane[plane];
    const struct buf_2d *const pre_buf = &pd->pre[ref];
    WarpedMotionParams *gm = &xd->global_motion[mi->mbmi.ref_frame[ref]];

    av1_warp_plane(gm,
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#if CONFIG_HIGHBITDEPTH
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                   xd->cur_buf->flags & YV12_FLAG_HIGHBITDEPTH, xd->bd,
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#endif  // CONFIG_HIGHBITDEPTH
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                   pre_buf->buf0, pre_buf->width, pre_buf->height,
                   pre_buf->stride, dst, p_col, p_row, w, h, dst_stride,
                   pd->subsampling_x, pd->subsampling_y, xs, ys, ref);
    return;
  }
#endif  // CONFIG_GLOBAL_MOTION
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#if CONFIG_HIGHBITDEPTH
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  if (xd->cur_buf->flags & YV12_FLAG_HIGHBITDEPTH) {
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    highbd_inter_predictor(src, src_stride, dst, dst_stride, subpel_x, subpel_y,
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                           sf, w, h, conv_params->ref, interp_filter, xs, ys,
                           xd->bd);
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    return;
  }
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#endif  // CONFIG_HIGHBITDEPTH
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  inter_predictor(src, src_stride, dst, dst_stride, subpel_x, subpel_y, sf, w,
                  h, conv_params, interp_filter, xs, ys);
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}

#if CONFIG_EXT_INTER
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void av1_make_masked_inter_predictor(const uint8_t *pre, int pre_stride,
                                     uint8_t *dst, int dst_stride,
                                     const int subpel_x, const int subpel_y,
                                     const struct scale_factors *sf, int w,
                                     int h,
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#if CONFIG_DUAL_FILTER
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                                     const InterpFilter *interp_filter,
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#else
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                                     const InterpFilter interp_filter,
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#endif
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                                     int xs, int ys,
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#if CONFIG_SUPERTX
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                                     int wedge_offset_x, int wedge_offset_y,
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#endif  // CONFIG_SUPERTX
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                                     int plane,
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#if CONFIG_GLOBAL_MOTION
                                     int is_global, int p_col, int p_row,
                                     int ref,
#endif  // CONFIG_GLOBAL_MOTION
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                                     MACROBLOCKD *xd);
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#endif  // CONFIG_EXT_INTER

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static INLINE int round_mv_comp_q4(int value) {
  return (value < 0 ? value - 2 : value + 2) / 4;
}

static MV mi_mv_pred_q4(const MODE_INFO *mi, int idx) {
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  MV res = {
    round_mv_comp_q4(
        mi->bmi[0].as_mv[idx].as_mv.row + mi->bmi[1].as_mv[idx].as_mv.row +
        mi->bmi[2].as_mv[idx].as_mv.row + mi->bmi[3].as_mv[idx].as_mv.row),
    round_mv_comp_q4(
        mi->bmi[0].as_mv[idx].as_mv.col + mi->bmi[1].as_mv[idx].as_mv.col +
        mi->bmi[2].as_mv[idx].as_mv.col + mi->bmi[3].as_mv[idx].as_mv.col)
  };
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  return res;
}

static INLINE int round_mv_comp_q2(int value) {
  return (value < 0 ? value - 1 : value + 1) / 2;
}

static MV mi_mv_pred_q2(const MODE_INFO *mi, int idx, int block0, int block1) {
  MV res = { round_mv_comp_q2(mi->bmi[block0].as_mv[idx].as_mv.row +
                              mi->bmi[block1].as_mv[idx].as_mv.row),
             round_mv_comp_q2(mi->bmi[block0].as_mv[idx].as_mv.col +
                              mi->bmi[block1].as_mv[idx].as_mv.col) };
  return res;
}

// 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,
                                           int ss_x, int ss_y) {
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  // If the MV points so far into the UMV border that no visible pixels
  // are used for reconstruction, the subpel part of the MV can be
  // 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 = { src_mv->row * (1 << (1 - ss_y)),
                    src_mv->col * (1 << (1 - ss_x)) };
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  assert(ss_x <= 1);
  assert(ss_y <= 1);

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  clamp_mv(&clamped_mv, 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,
           xd->mb_to_top_edge * (1 << (1 - ss_y)) - spel_top,
           xd->mb_to_bottom_edge * (1 << (1 - ss_y)) + spel_bottom);

  return clamped_mv;
}

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static INLINE MV average_split_mvs(const struct macroblockd_plane *pd,
                                   const MODE_INFO *mi, int ref, int block) {
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  const int ss_idx = ((pd->subsampling_x > 0) << 1) | (pd->subsampling_y > 0);
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  MV res = { 0, 0 };
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  switch (ss_idx) {
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    case 0: res = mi->bmi[block].as_mv[ref].as_mv; break;
    case 1: res = mi_mv_pred_q2(mi, ref, block, block + 2); break;
    case 2: res = mi_mv_pred_q2(mi, ref, block, block + 1); break;
    case 3: res = mi_mv_pred_q4(mi, ref); break;
    default: assert(ss_idx <= 3 && ss_idx >= 0);
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  }
  return res;
}

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void av1_build_inter_predictor_sub8x8(MACROBLOCKD *xd, int plane, int i, int ir,
                                      int ic, int mi_row, int mi_col);
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void av1_build_inter_predictors_sby(MACROBLOCKD *xd, int mi_row, int mi_col,
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                                    BUFFER_SET *ctx, BLOCK_SIZE bsize);
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void av1_build_inter_predictors_sbuv(MACROBLOCKD *xd, int mi_row, int mi_col,
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                                     BUFFER_SET *ctx, BLOCK_SIZE bsize);
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void av1_build_inter_predictors_sb(MACROBLOCKD *xd, int mi_row, int mi_col,
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                                   BUFFER_SET *ctx, BLOCK_SIZE bsize);
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#if CONFIG_SUPERTX
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void av1_build_inter_predictors_sb_sub8x8_extend(MACROBLOCKD *xd,
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#if CONFIG_EXT_INTER
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                                                 int mi_row_ori, int mi_col_ori,
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#endif  // CONFIG_EXT_INTER
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                                                 int mi_row, int mi_col,
                                                 BLOCK_SIZE bsize, int block);
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void av1_build_inter_predictors_sb_extend(MACROBLOCKD *xd,
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#if CONFIG_EXT_INTER
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                                          int mi_row_ori, int mi_col_ori,
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#endif  // CONFIG_EXT_INTER
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                                          int mi_row, int mi_col,
                                          BLOCK_SIZE bsize);
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struct macroblockd_plane;
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void av1_build_masked_inter_predictor_complex(
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    MACROBLOCKD *xd, uint8_t *dst, int dst_stride, const uint8_t *pre,
    int pre_stride, int mi_row, int mi_col, int mi_row_ori, int mi_col_ori,
    BLOCK_SIZE bsize, BLOCK_SIZE top_bsize, PARTITION_TYPE partition,
    int plane);
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#endif  // CONFIG_SUPERTX
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void av1_build_inter_predictor(const uint8_t *src, int src_stride, uint8_t *dst,
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                               int dst_stride, const MV *src_mv,
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                               const struct scale_factors *sf, int w, int h,
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                               ConvolveParams *conv_params,
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#if CONFIG_DUAL_FILTER
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                               const InterpFilter *interp_filter,
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#else
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                               const InterpFilter interp_filter,
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#endif
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#if CONFIG_GLOBAL_MOTION
                               int is_global, int p_col, int p_row, int plane,
                               int ref,
#endif  // CONFIG_GLOBAL_MOTION
                               enum mv_precision precision, int x, int y,
                               const MACROBLOCKD *xd);
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#if CONFIG_HIGHBITDEPTH
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void av1_highbd_build_inter_predictor(const uint8_t *src, int src_stride,
                                      uint8_t *dst, int dst_stride,
                                      const MV *mv_q3,
                                      const struct scale_factors *sf, int w,
                                      int h, int do_avg,
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#if CONFIG_DUAL_FILTER
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                                      const InterpFilter *interp_filter,
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#else
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                                      const InterpFilter interp_filter,
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#endif
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#if CONFIG_GLOBAL_MOTION
                                      int is_global, int p_col, int p_row,
#endif  // CONFIG_GLOBAL_MOTION
                                      int plane, enum mv_precision precision,
                                      int x, int y, const MACROBLOCKD *xd);
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#endif

static INLINE int scaled_buffer_offset(int x_offset, int y_offset, int stride,
                                       const struct scale_factors *sf) {
  const int x = sf ? sf->scale_value_x(x_offset, sf) : x_offset;
  const int y = sf ? sf->scale_value_y(y_offset, sf) : y_offset;
  return y * stride + x;
}

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static INLINE void setup_pred_plane(struct buf_2d *dst, uint8_t *src, int width,
                                    int height, int stride, int mi_row,
                                    int mi_col,
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                                    const struct scale_factors *scale,
                                    int subsampling_x, int subsampling_y) {
  const int x = (MI_SIZE * mi_col) >> subsampling_x;
  const int y = (MI_SIZE * mi_row) >> subsampling_y;
  dst->buf = src + scaled_buffer_offset(x, y, stride, scale);
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  dst->buf0 = src;
  dst->width = width;
  dst->height = height;
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  dst->stride = stride;
}

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void av1_setup_dst_planes(struct macroblockd_plane planes[MAX_MB_PLANE],
                          const YV12_BUFFER_CONFIG *src, int mi_row,
                          int mi_col);
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void av1_setup_pre_planes(MACROBLOCKD *xd, int idx,
                          const YV12_BUFFER_CONFIG *src, int mi_row, int mi_col,
                          const struct scale_factors *sf);
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// Detect if the block have sub-pixel level motion vectors
// per component.
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#define CHECK_SUBPEL 0
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static INLINE int has_subpel_mv_component(const MODE_INFO *const mi,
                                          const MACROBLOCKD *const xd,
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                                          int dir) {
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#if CHECK_SUBPEL
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  const MB_MODE_INFO *const mbmi = &mi->mbmi;
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  const BLOCK_SIZE bsize = mbmi->sb_type;
  int plane;
  int ref = (dir >> 1);
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#if CONFIG_CB4X4
  const int unify_bsize = 1;
#else
  const int unify_bsize = 0;
#endif
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  if (bsize >= BLOCK_8X8 || unify_bsize) {
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    if (dir & 0x01) {
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      if (mbmi->mv[ref].as_mv.col & SUBPEL_MASK) return 1;
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    } else {
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      if (mbmi->mv[ref].as_mv.row & SUBPEL_MASK) return 1;
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    }
  } else {
    for (plane = 0; plane < MAX_MB_PLANE; ++plane) {
      const PARTITION_TYPE bp = BLOCK_8X8 - bsize;
      const struct macroblockd_plane *const pd = &xd->plane[plane];
      const int have_vsplit = bp != PARTITION_HORZ;
      const int have_hsplit = bp != PARTITION_VERT;
      const int num_4x4_w = 2 >> ((!have_vsplit) | pd->subsampling_x);
      const int num_4x4_h = 2 >> ((!have_hsplit) | pd->subsampling_y);

      int x, y;
      for (y = 0; y < num_4x4_h; ++y) {
        for (x = 0; x < num_4x4_w; ++x) {
          const MV mv = average_split_mvs(pd, mi, ref, y * 2 + x);
          if (dir & 0x01) {
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            if (mv.col & SUBPEL_MASK) return 1;
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          } else {
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            if (mv.row & SUBPEL_MASK) return 1;
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          }
        }
      }
    }
  }

  return 0;
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#else
  (void)mi;
  (void)xd;
  (void)dir;
  return 1;
#endif
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}

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static INLINE int av1_is_interp_needed(const MACROBLOCKD *const xd) {
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  MODE_INFO *const mi = xd->mi[0];
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  const int is_compound = has_second_ref(&mi->mbmi);
  int ref;
  for (ref = 0; ref < 1 + is_compound; ++ref) {
    int row_col;
    for (row_col = 0; row_col < 2; ++row_col) {
      const int dir = (ref << 1) + row_col;
      if (has_subpel_mv_component(mi, xd, dir)) {
        return 1;
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      }
    }
  }
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  return 0;
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}
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#if CONFIG_MOTION_VAR
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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,
                                      int mi_row, int mi_col);
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void av1_build_obmc_inter_prediction(const AV1_COMMON *cm, MACROBLOCKD *xd,
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                                     int mi_row, int mi_col,
                                     uint8_t *above[MAX_MB_PLANE],
                                     int above_stride[MAX_MB_PLANE],
                                     uint8_t *left[MAX_MB_PLANE],
                                     int left_stride[MAX_MB_PLANE]);
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void av1_build_prediction_by_above_preds(const AV1_COMMON *cm, MACROBLOCKD *xd,
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                                         int mi_row, int mi_col,
                                         uint8_t *tmp_buf[MAX_MB_PLANE],
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                                         int tmp_width[MAX_MB_PLANE],
                                         int tmp_height[MAX_MB_PLANE],
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                                         int tmp_stride[MAX_MB_PLANE]);
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void av1_build_prediction_by_left_preds(const AV1_COMMON *cm, MACROBLOCKD *xd,
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                                        int mi_row, int mi_col,
                                        uint8_t *tmp_buf[MAX_MB_PLANE],
                                        int tmp_width[MAX_MB_PLANE],
                                        int tmp_height[MAX_MB_PLANE],
                                        int tmp_stride[MAX_MB_PLANE]);
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void av1_build_obmc_inter_predictors_sb(const AV1_COMMON *cm, MACROBLOCKD *xd,
                                        int mi_row, int mi_col);
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#if CONFIG_NCOBMC
void av1_build_ncobmc_inter_predictors_sb(const AV1_COMMON *cm, MACROBLOCKD *xd,
                                          int mi_row, int mi_col);
#endif
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#endif  // CONFIG_MOTION_VAR
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#if CONFIG_EXT_INTER
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#define MASK_MASTER_SIZE (2 * MAX_SB_SIZE)
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#define MASK_MASTER_STRIDE (2 * MAX_SB_SIZE)
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void av1_init_wedge_masks();
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static INLINE const uint8_t *av1_get_contiguous_soft_mask(int wedge_index,
                                                          int wedge_sign,
                                                          BLOCK_SIZE sb_type) {
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  return wedge_params_lookup[sb_type].masks[wedge_sign][wedge_index];
}

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const uint8_t *av1_get_soft_mask(int wedge_index, int wedge_sign,
                                 BLOCK_SIZE sb_type, int wedge_offset_x,
                                 int wedge_offset_y);

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const uint8_t *av1_get_compound_type_mask_inverse(
    const INTERINTER_COMPOUND_DATA *const comp_data,
#if CONFIG_COMPOUND_SEGMENT
    uint8_t *mask_buffer, int h, int w, int stride,
#endif
    BLOCK_SIZE sb_type);

const uint8_t *av1_get_compound_type_mask(
    const INTERINTER_COMPOUND_DATA *const comp_data, BLOCK_SIZE sb_type);
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void av1_build_interintra_predictors(MACROBLOCKD *xd, uint8_t *ypred,
                                     uint8_t *upred, uint8_t *vpred,
                                     int ystride, int ustride, int vstride,
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                                     BUFFER_SET *ctx, BLOCK_SIZE bsize);
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void av1_build_interintra_predictors_sby(MACROBLOCKD *xd, uint8_t *ypred,
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                                         int ystride, BUFFER_SET *ctx,
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                                         BLOCK_SIZE bsize);
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void av1_build_interintra_predictors_sbc(MACROBLOCKD *xd, uint8_t *upred,
                                         int ustride, BUFFER_SET *ctx,
                                         int plane, BLOCK_SIZE bsize);
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void av1_build_interintra_predictors_sbuv(MACROBLOCKD *xd, uint8_t *upred,
                                          uint8_t *vpred, int ustride,
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                                          int vstride, BUFFER_SET *ctx,
                                          BLOCK_SIZE bsize);
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void av1_build_intra_predictors_for_interintra(MACROBLOCKD *xd,
                                               BLOCK_SIZE bsize, int plane,
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                                               BUFFER_SET *ctx,
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                                               uint8_t *intra_pred,
                                               int intra_stride);
void av1_combine_interintra(MACROBLOCKD *xd, BLOCK_SIZE bsize, int plane,
                            const uint8_t *inter_pred, int inter_stride,
                            const uint8_t *intra_pred, int intra_stride);
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// Encoder only
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void av1_build_inter_predictors_for_planes_single_buf(
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    MACROBLOCKD *xd, BLOCK_SIZE bsize, int plane_from, int plane_to, int mi_row,
    int mi_col, int ref, uint8_t *ext_dst[3], int ext_dst_stride[3]);
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void av1_build_wedge_inter_predictor_from_buf(
    MACROBLOCKD *xd, BLOCK_SIZE bsize, int plane_from, int plane_to,
#if CONFIG_SUPERTX
    int wedge_offset_x, int wedge_offset_y,
#endif  // CONFIG_SUPERTX
    uint8_t *ext_dst0[3], int ext_dst_stride0[3], uint8_t *ext_dst1[3],
    int ext_dst_stride1[3]);
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#endif  // CONFIG_EXT_INTER

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#ifdef __cplusplus
}  // extern "C"
#endif

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#endif  // AV1_COMMON_RECONINTER_H_