// Work out how many pixels off the edge of a reference frame we're allowed // to go when forming an inter prediction. // The outermost row/col of each referernce frame is extended by // (AOM_BORDER_IN_PIXELS >> subsampling) pixels, but we need to keep // at least AOM_INTERP_EXTEND pixels within that to account for filtering. // // We have to break this up into two macros to keep both clang-format and // tools/lint-hunks.py happy. #define AOM_LEFT_TOP_MARGIN_PX(subsampling) \
((AOM_BORDER_IN_PIXELS >> subsampling) - AOM_INTERP_EXTEND) #define AOM_LEFT_TOP_MARGIN_SCALED(subsampling) \
(AOM_LEFT_TOP_MARGIN_PX(subsampling) << SCALE_SUBPEL_BITS)
typedefstruct InterPredParams {
InterPredMode mode;
InterCompMode comp_mode;
WarpedMotionParams warp_params;
ConvolveParams conv_params; const InterpFilterParams *interp_filter_params[2];
int block_width;
int block_height;
int pix_row;
int pix_col; struct buf_2d ref_frame_buf;
int subsampling_x;
int subsampling_y; conststruct scale_factors *scale_factors;
int bit_depth;
int use_hbd_buf;
INTERINTER_COMPOUND_DATA mask_comp;
BLOCK_SIZE sb_type;
int is_intrabc;
int top;
int left;
} InterPredParams;
// Initialize sub-pel params required for inter prediction. static inline void init_subpel_params(const MV *const src_mv,
InterPredParams *const inter_pred_params,
SubpelParams *subpel_params, int width,
int height) { conststruct scale_factors *sf = inter_pred_params->scale_factors;
int ssx = inter_pred_params->subsampling_x;
int ssy = inter_pred_params->subsampling_y;
int orig_pos_y = inter_pred_params->pix_row << SUBPEL_BITS;
orig_pos_y += src_mv->row * (1 << (1 - ssy));
int orig_pos_x = inter_pred_params->pix_col << SUBPEL_BITS;
orig_pos_x += src_mv->col * (1 << (1 - ssx)); const int is_scaled = av1_is_scaled(sf);
int pos_x, pos_y;
if (LIKELY(!is_scaled)) {
pos_y = av1_unscaled_value(orig_pos_y, sf);
pos_x = av1_unscaled_value(orig_pos_x, sf);
} else {
pos_y = av1_scaled_y(orig_pos_y, sf);
pos_x = av1_scaled_x(orig_pos_x, sf);
}
int av1_skip_u4x4_pred_in_obmc(BLOCK_SIZE bsize, conststruct macroblockd_plane *pd, int dir);
static inline int is_interinter_compound_used(COMPOUND_TYPE type,
BLOCK_SIZE sb_type) { const int comp_allowed = is_comp_ref_allowed(sb_type); switch (type) { case COMPOUND_AVERAGE: case COMPOUND_DISTWTD: case COMPOUND_DIFFWTD: return comp_allowed; case COMPOUND_WEDGE: return comp_allowed && av1_wedge_params_lookup[sb_type].wedge_types > 0; default: assert(0); return0;
}
}
static inline int is_any_masked_compound_used(BLOCK_SIZE sb_type) {
COMPOUND_TYPE comp_type;
int i;
if (!is_comp_ref_allowed(sb_type)) return0;
for (i = 0; i < COMPOUND_TYPES; i++) {
comp_type = (COMPOUND_TYPE)i;
if (is_masked_compound_type(comp_type) &&
is_interinter_compound_used(comp_type, sb_type)) return1;
} return0;
}
static inline int get_wedge_types_lookup(BLOCK_SIZE sb_type) { return av1_wedge_params_lookup[sb_type].wedge_types;
}
void av1_make_inter_predictor(const uint8_t *src, int src_stride, uint8_t *dst,
int dst_stride,
InterPredParams *inter_pred_params, const SubpelParams *subpel_params); void av1_make_masked_inter_predictor(const uint8_t *pre, int pre_stride,
uint8_t *dst, int dst_stride,
InterPredParams *inter_pred_params, const SubpelParams *subpel_params);
// TODO(jkoleszar): yet another mv clamping function :-( static inline MV clamp_mv_to_umv_border_sb(const MACROBLOCKD *xd, const MV *src_mv, int bw, int bh,
int ss_x, int ss_y) { // 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. const int spel_left = (AOM_INTERP_EXTEND + bw) << SUBPEL_BITS; const int spel_right = spel_left - SUBPEL_SHIFTS; const int spel_top = (AOM_INTERP_EXTEND + bh) << SUBPEL_BITS; const int spel_bottom = spel_top - SUBPEL_SHIFTS;
MV clamped_mv = { (int16_t)(src_mv->row * (1 << (1 - ss_y))),
(int16_t)(src_mv->col * (1 << (1 - ss_x))) };
assert(ss_x <= 1);
assert(ss_y <= 1); const SubpelMvLimits mv_limits = {
xd->mb_to_left_edge * (1 << (1 - ss_x)) - spel_left,
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
};
clamp_mv(&clamped_mv, &mv_limits);
return clamped_mv;
}
static inline int64_t scaled_buffer_offset(int x_offset, int y_offset,
int stride, conststruct scale_factors *sf) {
int x, y;
if (!sf) {
x = x_offset;
y = y_offset;
} else if (av1_is_scaled(sf)) {
x = av1_scaled_x(x_offset, sf) >> SCALE_EXTRA_BITS;
y = av1_scaled_y(y_offset, sf) >> SCALE_EXTRA_BITS;
} else {
x = av1_unscaled_value(x_offset, sf) >> SCALE_EXTRA_BITS;
y = av1_unscaled_value(y_offset, sf) >> SCALE_EXTRA_BITS;
} return (int64_t)y * stride + x;
}
static inline void setup_pred_plane(struct buf_2d *dst, BLOCK_SIZE bsize,
uint8_t *src, int width, int height,
int stride, int mi_row, int mi_col, conststruct scale_factors *scale,
int subsampling_x, int subsampling_y) { // Offset the buffer pointer
if (subsampling_y && (mi_row & 0x01) && (mi_size_high[bsize] == 1))
mi_row -= 1;
if (subsampling_x && (mi_col & 0x01) && (mi_size_wide[bsize] == 1))
mi_col -= 1;
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);
dst->buf0 = src;
dst->width = width;
dst->height = height;
dst->stride = stride;
}
void av1_setup_dst_planes(struct macroblockd_plane *planes, BLOCK_SIZE bsize, const YV12_BUFFER_CONFIG *src, int mi_row, int mi_col, const int plane_start, const int plane_end);
void av1_setup_pre_planes(MACROBLOCKD *xd, int idx, const YV12_BUFFER_CONFIG *src, int mi_row, int mi_col, conststruct scale_factors *sf, const int num_planes);
static inline int av1_is_interp_needed(const MACROBLOCKD *const xd) { const MB_MODE_INFO *const mbmi = xd->mi[0];
if (mbmi->skip_mode) return0;
if (mbmi->motion_mode == WARPED_CAUSAL) return0;
if (is_nontrans_global_motion(xd, xd->mi[0])) return0; return1;
}
// Sets up buffers 'dst_buf1' and 'dst_buf2' from relevant buffers in 'xd' for // subsequent use in OBMC prediction. void av1_setup_obmc_dst_bufs(MACROBLOCKD *xd, uint8_t **dst_buf1,
uint8_t **dst_buf2);
void av1_setup_build_prediction_by_above_pred(
MACROBLOCKD *xd, int rel_mi_col, uint8_t above_mi_width,
MB_MODE_INFO *above_mbmi, struct build_prediction_ctxt *ctxt, const int num_planes); void av1_setup_build_prediction_by_left_pred(MACROBLOCKD *xd, int rel_mi_row,
uint8_t left_mi_height,
MB_MODE_INFO *left_mbmi, struct build_prediction_ctxt *ctxt, const int num_planes); void av1_build_obmc_inter_prediction(const AV1_COMMON *cm, MACROBLOCKD *xd,
uint8_t *above[MAX_MB_PLANE],
int above_stride[MAX_MB_PLANE],
uint8_t *left[MAX_MB_PLANE],
int left_stride[MAX_MB_PLANE]);
void av1_dist_wtd_comp_weight_assign(const AV1_COMMON *cm, const MB_MODE_INFO *mbmi, int *fwd_offset,
int *bck_offset,
int *use_dist_wtd_comp_avg,
int is_compound);
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