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+/*
+ * 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/filter.h"
+#include "av1/common/onyxc_int.h"
+#include "av1/common/convolve.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
+
+// Set to (1 << 5) if the 32-ary codebooks are used for any bock size
+#define MAX_WEDGE_TYPES (1 << 4)
+
+#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
+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;
+
+typedef uint8_t *wedge_masks_type[MAX_WEDGE_TYPES];
+
+typedef struct {
+ int bits;
+ const wedge_code_type *codebook;
+ uint8_t *signflip;
+ wedge_masks_type *masks;
+} wedge_params_type;
+
+extern const wedge_params_type wedge_params_lookup[BLOCK_SIZES_ALL];
+
+typedef struct SubpelParams {
+ int xs;
+ int ys;
+ int subpel_x;
+ int subpel_y;
+} SubpelParams;
+
+struct build_prediction_ctxt {
+ const AV1_COMMON *cm;
+ int mi_row;
+ int mi_col;
+ uint8_t **tmp_buf;
+ int *tmp_width;
+ int *tmp_height;
+ int *tmp_stride;
+ int mb_to_far_edge;
+};
+
+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,
+ const struct scale_factors *sf, int w, int h,
+ ConvolveParams *conv_params,
+ InterpFilters interp_filters,
+ int is_intrabc) {
+ assert(conv_params->do_average == 0 || conv_params->do_average == 1);
+ assert(sf);
+ const int is_scaled = has_scale(subpel_params->xs, subpel_params->ys);
+ assert(IMPLIES(is_intrabc, !is_scaled));
+ 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, sf, is_intrabc);
+ } 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, sf, is_intrabc);
+ }
+}
+
+static INLINE void highbd_inter_predictor(const uint8_t *src, int src_stride,
+ uint8_t *dst, int dst_stride,
+ const SubpelParams *subpel_params,
+ const struct scale_factors *sf, int w,
+ int h, ConvolveParams *conv_params,
+ InterpFilters interp_filters,
+ int is_intrabc, int bd) {
+ assert(conv_params->do_average == 0 || conv_params->do_average == 1);
+ assert(sf);
+ const int is_scaled = has_scale(subpel_params->xs, subpel_params->ys);
+ assert(IMPLIES(is_intrabc, !is_scaled));
+ 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, sf, is_intrabc, 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, sf, is_intrabc, 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_DIFFWTD: return comp_allowed;
+ case COMPOUND_WEDGE:
+ return comp_allowed && wedge_params_lookup[sb_type].bits > 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_bits_lookup(BLOCK_SIZE sb_type) {
+ return wedge_params_lookup[sb_type].bits;
+}
+
+static INLINE int get_interinter_wedge_bits(BLOCK_SIZE sb_type) {
+ const int wbits = wedge_params_lookup[sb_type].bits;
+ return (wbits > 0) ? wbits + 1 : 0;
+}
+
+static INLINE int is_interintra_wedge_used(BLOCK_SIZE sb_type) {
+ return wedge_params_lookup[sb_type].bits > 0;
+}
+
+static INLINE int get_interintra_wedge_bits(BLOCK_SIZE sb_type) {
+ return wedge_params_lookup[sb_type].bits;
+}
+
+void av1_make_inter_predictor(const uint8_t *src, int src_stride, uint8_t *dst,
+ int dst_stride, const SubpelParams *subpel_params,
+ const struct scale_factors *sf, int w, int h,
+ ConvolveParams *conv_params,
+ InterpFilters interp_filters,
+ const WarpTypesAllowed *warp_types, int p_col,
+ int p_row, int plane, int ref,
+ const MB_MODE_INFO *mi, int build_for_obmc,
+ const MACROBLOCKD *xd, int can_use_previous);
+
+void av1_make_masked_inter_predictor(
+ const uint8_t *pre, int pre_stride, uint8_t *dst, int dst_stride,
+ const SubpelParams *subpel_params, const struct scale_factors *sf, int w,
+ int h, ConvolveParams *conv_params, InterpFilters interp_filters, int plane,
+ const WarpTypesAllowed *warp_types, int p_col, int p_row, int ref,
+ MACROBLOCKD *xd, int can_use_previous);
+
+// 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);
+
+ clamp_mv(&clamped_mv, 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);
+
+ return clamped_mv;
+}
+
+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) >> SCALE_EXTRA_BITS : x_offset;
+ const int y =
+ sf ? sf->scale_value_y(y_offset, sf) >> SCALE_EXTRA_BITS : y_offset;
+ return 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;
+}
+
+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,
+ 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]);
+
+const uint8_t *av1_get_obmc_mask(int length);
+void av1_count_overlappable_neighbors(const AV1_COMMON *cm, MACROBLOCKD *xd,
+ int mi_row, int mi_col);
+
+#define MASK_MASTER_SIZE ((MAX_WEDGE_SIZE) << 1)
+#define MASK_MASTER_STRIDE (MASK_MASTER_SIZE)
+
+void av1_init_wedge_masks();
+
+static INLINE const uint8_t *av1_get_contiguous_soft_mask(int wedge_index,
+ int wedge_sign,
+ BLOCK_SIZE sb_type) {
+ return wedge_params_lookup[sb_type].masks[wedge_sign][wedge_index];
+}
+
+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_predictors_sbp(const AV1_COMMON *cm, MACROBLOCKD *xd,
+ uint8_t *pred, int stride,
+ BUFFER_SET *ctx, int plane,
+ BLOCK_SIZE bsize);
+
+void av1_build_interintra_predictors_sbuv(const AV1_COMMON *cm, MACROBLOCKD *xd,
+ uint8_t *upred, uint8_t *vpred,
+ int ustride, int vstride,
+ BUFFER_SET *ctx, BLOCK_SIZE bsize);
+
+void av1_build_intra_predictors_for_interintra(
+ const AV1_COMMON *cm, MACROBLOCKD *xd, BLOCK_SIZE bsize, int plane,
+ BUFFER_SET *ctx, 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);
+
+void av1_jnt_comp_weight_assign(const AV1_COMMON *cm, const MB_MODE_INFO *mbmi,
+ int order_idx, int *fwd_offset, int *bck_offset,
+ int *use_jnt_comp_avg, int is_compound);
+int av1_allow_warp(const MB_MODE_INFO *const mbmi,
+ const WarpTypesAllowed *const warp_types,
+ const WarpedMotionParams *const gm_params,
+ int build_for_obmc, int x_scale, int y_scale,
+ WarpedMotionParams *final_warp_params);
+
+#ifdef __cplusplus
+} // extern "C"
+#endif
+
+#endif // AOM_AV1_COMMON_RECONINTER_H_