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| -rw-r--r-- | third_party/aom/av1/common/reconinter.h | 489 |
1 files changed, 489 insertions, 0 deletions
diff --git a/third_party/aom/av1/common/reconinter.h b/third_party/aom/av1/common/reconinter.h new file mode 100644 index 0000000000..c31f4531e2 --- /dev/null +++ b/third_party/aom/av1/common/reconinter.h @@ -0,0 +1,489 @@ +/* + * 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. + */ + +#ifndef AOM_AV1_COMMON_RECONINTER_H_ +#define AOM_AV1_COMMON_RECONINTER_H_ + +#include "av1/common/av1_common_int.h" +#include "av1/common/convolve.h" +#include "av1/common/filter.h" +#include "av1/common/warped_motion.h" +#include "aom/aom_integer.h" + +// 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) + +#ifdef __cplusplus +extern "C" { +#endif + +#define MAX_WEDGE_TYPES 16 + +#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) + +#define WEDGE_WEIGHT_BITS 6 + +#define WEDGE_NONE -1 + +// Angles are with respect to horizontal anti-clockwise +enum { + WEDGE_HORIZONTAL = 0, + WEDGE_VERTICAL = 1, + WEDGE_OBLIQUE27 = 2, + WEDGE_OBLIQUE63 = 3, + WEDGE_OBLIQUE117 = 4, + WEDGE_OBLIQUE153 = 5, + WEDGE_DIRECTIONS +} UENUM1BYTE(WedgeDirectionType); + +// 3-tuple: {direction, x_offset, y_offset} +typedef struct { + WedgeDirectionType direction; + int x_offset; + int y_offset; +} wedge_code_type; + +typedef uint8_t *wedge_masks_type[MAX_WEDGE_TYPES]; + +typedef struct { + int wedge_types; + const wedge_code_type *codebook; + uint8_t *signflip; + wedge_masks_type *masks; +} wedge_params_type; + +extern const wedge_params_type av1_wedge_params_lookup[BLOCK_SIZES_ALL]; + +typedef struct SubpelParams { + int xs; + int ys; + int subpel_x; + int subpel_y; + int pos_x; + int pos_y; +} SubpelParams; + +struct build_prediction_ctxt { + const AV1_COMMON *cm; + uint8_t **tmp_buf; + int *tmp_width; + int *tmp_height; + int *tmp_stride; + int mb_to_far_edge; + void *dcb; // Decoder-only coding block. +}; + +typedef enum InterPredMode { + TRANSLATION_PRED, + WARP_PRED, +} InterPredMode; + +typedef enum InterCompMode { + UNIFORM_SINGLE, + UNIFORM_COMP, + MASK_COMP, +} InterCompMode; + +typedef struct 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; + const struct 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 AOM_INLINE void init_subpel_params( + const MV *const src_mv, InterPredParams *const inter_pred_params, + SubpelParams *subpel_params, int width, int height) { + const struct 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); + } + + pos_x += SCALE_EXTRA_OFF; + pos_y += SCALE_EXTRA_OFF; + + const int bottom = (height + AOM_INTERP_EXTEND) << SCALE_SUBPEL_BITS; + const int right = (width + AOM_INTERP_EXTEND) << SCALE_SUBPEL_BITS; + pos_y = clamp(pos_y, inter_pred_params->top, bottom); + pos_x = clamp(pos_x, inter_pred_params->left, right); + + subpel_params->pos_x = pos_x; + subpel_params->pos_y = pos_y; + subpel_params->subpel_x = pos_x & SCALE_SUBPEL_MASK; + subpel_params->subpel_y = pos_y & SCALE_SUBPEL_MASK; + subpel_params->xs = sf->x_step_q4; + subpel_params->ys = sf->y_step_q4; +} + +// Initialize interp filter required for inter prediction. +static AOM_INLINE void init_interp_filter_params( + const InterpFilterParams *interp_filter_params[2], + const InterpFilters *filter, int block_width, int block_height, + int is_intrabc) { + if (UNLIKELY(is_intrabc)) { + interp_filter_params[0] = &av1_intrabc_filter_params; + interp_filter_params[1] = &av1_intrabc_filter_params; + } else { + interp_filter_params[0] = av1_get_interp_filter_params_with_block_size( + (InterpFilter)filter->x_filter, block_width); + interp_filter_params[1] = av1_get_interp_filter_params_with_block_size( + (InterpFilter)filter->y_filter, block_height); + } +} + +// Initialize parameters required for inter prediction at mode level. +static AOM_INLINE void init_inter_mode_params( + const MV *const src_mv, InterPredParams *const inter_pred_params, + SubpelParams *subpel_params, const struct scale_factors *sf, int width, + int height) { + inter_pred_params->scale_factors = sf; + init_subpel_params(src_mv, inter_pred_params, subpel_params, width, height); +} + +// Initialize parameters required for inter prediction at block level. +static AOM_INLINE void init_inter_block_params( + InterPredParams *inter_pred_params, int block_width, int block_height, + int pix_row, int pix_col, int subsampling_x, int subsampling_y, + int bit_depth, int use_hbd_buf, int is_intrabc) { + inter_pred_params->block_width = block_width; + inter_pred_params->block_height = block_height; + inter_pred_params->pix_row = pix_row; + inter_pred_params->pix_col = pix_col; + inter_pred_params->subsampling_x = subsampling_x; + inter_pred_params->subsampling_y = subsampling_y; + inter_pred_params->bit_depth = bit_depth; + inter_pred_params->use_hbd_buf = use_hbd_buf; + inter_pred_params->is_intrabc = is_intrabc; + inter_pred_params->mode = TRANSLATION_PRED; + inter_pred_params->comp_mode = UNIFORM_SINGLE; + inter_pred_params->top = -AOM_LEFT_TOP_MARGIN_SCALED(subsampling_y); + inter_pred_params->left = -AOM_LEFT_TOP_MARGIN_SCALED(subsampling_x); +} + +// Initialize params required for inter prediction. +static AOM_INLINE void av1_init_inter_params( + InterPredParams *inter_pred_params, int block_width, int block_height, + int pix_row, int pix_col, int subsampling_x, int subsampling_y, + int bit_depth, int use_hbd_buf, int is_intrabc, + const struct scale_factors *sf, const struct buf_2d *ref_buf, + int_interpfilters interp_filters) { + init_inter_block_params(inter_pred_params, block_width, block_height, pix_row, + pix_col, subsampling_x, subsampling_y, bit_depth, + use_hbd_buf, is_intrabc); + init_interp_filter_params(inter_pred_params->interp_filter_params, + &interp_filters.as_filters, block_width, + block_height, is_intrabc); + inter_pred_params->scale_factors = sf; + inter_pred_params->ref_frame_buf = *ref_buf; +} + +static AOM_INLINE void av1_init_comp_mode(InterPredParams *inter_pred_params) { + inter_pred_params->comp_mode = UNIFORM_COMP; +} + +void av1_init_warp_params(InterPredParams *inter_pred_params, + const WarpTypesAllowed *warp_types, int ref, + const MACROBLOCKD *xd, const MB_MODE_INFO *mi); + +static INLINE int has_scale(int xs, int ys) { + return xs != SCALE_SUBPEL_SHIFTS || ys != SCALE_SUBPEL_SHIFTS; +} + +static INLINE void revert_scale_extra_bits(SubpelParams *sp) { + sp->subpel_x >>= SCALE_EXTRA_BITS; + sp->subpel_y >>= SCALE_EXTRA_BITS; + sp->xs >>= SCALE_EXTRA_BITS; + sp->ys >>= SCALE_EXTRA_BITS; + assert(sp->subpel_x < SUBPEL_SHIFTS); + assert(sp->subpel_y < SUBPEL_SHIFTS); + assert(sp->xs <= SUBPEL_SHIFTS); + assert(sp->ys <= SUBPEL_SHIFTS); +} + +static INLINE void inter_predictor( + const uint8_t *src, int src_stride, uint8_t *dst, int dst_stride, + const SubpelParams *subpel_params, int w, int h, + ConvolveParams *conv_params, const InterpFilterParams *interp_filters[2]) { + assert(conv_params->do_average == 0 || conv_params->do_average == 1); + const int is_scaled = has_scale(subpel_params->xs, subpel_params->ys); + if (is_scaled) { + av1_convolve_2d_facade(src, src_stride, dst, dst_stride, w, h, + interp_filters, subpel_params->subpel_x, + subpel_params->xs, subpel_params->subpel_y, + subpel_params->ys, 1, conv_params); + } else { + SubpelParams sp = *subpel_params; + revert_scale_extra_bits(&sp); + av1_convolve_2d_facade(src, src_stride, dst, dst_stride, w, h, + interp_filters, sp.subpel_x, sp.xs, sp.subpel_y, + sp.ys, 0, conv_params); + } +} + +static INLINE void highbd_inter_predictor( + const uint8_t *src, int src_stride, uint8_t *dst, int dst_stride, + const SubpelParams *subpel_params, int w, int h, + ConvolveParams *conv_params, const InterpFilterParams *interp_filters[2], + int bd) { + assert(conv_params->do_average == 0 || conv_params->do_average == 1); + const int is_scaled = has_scale(subpel_params->xs, subpel_params->ys); + if (is_scaled) { + av1_highbd_convolve_2d_facade(src, src_stride, dst, dst_stride, w, h, + interp_filters, subpel_params->subpel_x, + subpel_params->xs, subpel_params->subpel_y, + subpel_params->ys, 1, conv_params, bd); + } else { + SubpelParams sp = *subpel_params; + revert_scale_extra_bits(&sp); + av1_highbd_convolve_2d_facade(src, src_stride, dst, dst_stride, w, h, + interp_filters, sp.subpel_x, sp.xs, + sp.subpel_y, sp.ys, 0, conv_params, bd); + } +} + +void av1_modify_neighbor_predictor_for_obmc(MB_MODE_INFO *mbmi); +int av1_skip_u4x4_pred_in_obmc(BLOCK_SIZE bsize, + const struct 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); return 0; + } +} + +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)) return 0; + 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)) + return 1; + } + return 0; +} + +static INLINE int get_wedge_types_lookup(BLOCK_SIZE sb_type) { + return av1_wedge_params_lookup[sb_type].wedge_types; +} + +static INLINE int av1_is_wedge_used(BLOCK_SIZE sb_type) { + return av1_wedge_params_lookup[sb_type].wedge_types > 0; +} + +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, + const struct 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, + const struct 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, + const struct scale_factors *sf, const int num_planes); + +static INLINE void set_default_interp_filters( + MB_MODE_INFO *const mbmi, InterpFilter frame_interp_filter) { + mbmi->interp_filters = + av1_broadcast_interp_filter(av1_unswitchable_filter(frame_interp_filter)); +} + +static INLINE int av1_is_interp_needed(const MACROBLOCKD *const xd) { + const MB_MODE_INFO *const mbmi = xd->mi[0]; + if (mbmi->skip_mode) return 0; + if (mbmi->motion_mode == WARPED_CAUSAL) return 0; + if (is_nontrans_global_motion(xd, xd->mi[0])) return 0; + return 1; +} + +// 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]); + +const uint8_t *av1_get_obmc_mask(int length); +void av1_count_overlappable_neighbors(const AV1_COMMON *cm, MACROBLOCKD *xd); + +#define MASK_MASTER_SIZE ((MAX_WEDGE_SIZE) << 1) +#define MASK_MASTER_STRIDE (MASK_MASTER_SIZE) + +void av1_init_wedge_masks(void); + +static INLINE const uint8_t *av1_get_contiguous_soft_mask(int8_t wedge_index, + int8_t wedge_sign, + BLOCK_SIZE sb_type) { + return av1_wedge_params_lookup[sb_type].masks[wedge_sign][wedge_index]; +} + +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); + +const uint8_t *av1_get_compound_type_mask( + const INTERINTER_COMPOUND_DATA *const comp_data, BLOCK_SIZE sb_type); + +// build interintra_predictors for one plane +void av1_build_interintra_predictor(const AV1_COMMON *cm, MACROBLOCKD *xd, + uint8_t *pred, int stride, + const BUFFER_SET *ctx, int plane, + BLOCK_SIZE bsize); + +void av1_build_intra_predictors_for_interintra(const AV1_COMMON *cm, + MACROBLOCKD *xd, + BLOCK_SIZE bsize, int plane, + const BUFFER_SET *ctx, + uint8_t *dst, int dst_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); + +#ifdef __cplusplus +} // extern "C" +#endif + +#endif // AOM_AV1_COMMON_RECONINTER_H_ |