377 lines
13 KiB
C
377 lines
13 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_PRED_COMMON_H_
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#define AOM_AV1_COMMON_PRED_COMMON_H_
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#include <stdint.h>
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#include "av1/common/av1_common_int.h"
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#include "av1/common/blockd.h"
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#include "av1/common/mvref_common.h"
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#include "aom_dsp/aom_dsp_common.h"
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#ifdef __cplusplus
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extern "C" {
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#endif
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static inline uint8_t get_segment_id(
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const CommonModeInfoParams *const mi_params, const uint8_t *segment_ids,
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BLOCK_SIZE bsize, int mi_row, int mi_col) {
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const int mi_offset = mi_row * mi_params->mi_cols + mi_col;
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const int bw = mi_size_wide[bsize];
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const int bh = mi_size_high[bsize];
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const int xmis = AOMMIN(mi_params->mi_cols - mi_col, bw);
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const int ymis = AOMMIN(mi_params->mi_rows - mi_row, bh);
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const int seg_stride = mi_params->mi_cols;
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uint8_t segment_id = MAX_SEGMENTS;
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for (int y = 0; y < ymis; ++y) {
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for (int x = 0; x < xmis; ++x) {
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segment_id =
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AOMMIN(segment_id, segment_ids[mi_offset + y * seg_stride + x]);
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}
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}
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assert(segment_id < MAX_SEGMENTS);
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return segment_id;
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}
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static inline uint8_t av1_get_spatial_seg_pred(const AV1_COMMON *const cm,
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const MACROBLOCKD *const xd,
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int *cdf_index,
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int skip_over4x4) {
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const int step_size = skip_over4x4 ? 2 : 1;
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uint8_t prev_ul = UINT8_MAX; // top left segment_id
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uint8_t prev_l = UINT8_MAX; // left segment_id
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uint8_t prev_u = UINT8_MAX; // top segment_id
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const int mi_row = xd->mi_row;
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const int mi_col = xd->mi_col;
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const CommonModeInfoParams *const mi_params = &cm->mi_params;
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const uint8_t *seg_map = cm->cur_frame->seg_map;
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if ((xd->up_available) && (xd->left_available)) {
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prev_ul = get_segment_id(mi_params, seg_map, BLOCK_4X4, mi_row - step_size,
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mi_col - step_size);
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}
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if (xd->up_available) {
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prev_u = get_segment_id(mi_params, seg_map, BLOCK_4X4, mi_row - step_size,
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mi_col - 0);
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}
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if (xd->left_available) {
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prev_l = get_segment_id(mi_params, seg_map, BLOCK_4X4, mi_row - 0,
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mi_col - step_size);
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}
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assert(IMPLIES(prev_ul != UINT8_MAX,
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prev_u != UINT8_MAX && prev_l != UINT8_MAX));
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// Pick CDF index based on number of matching/out-of-bounds segment IDs.
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if (prev_ul == UINT8_MAX) /* Edge cases */
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*cdf_index = 0;
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else if ((prev_ul == prev_u) && (prev_ul == prev_l))
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*cdf_index = 2;
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else if ((prev_ul == prev_u) || (prev_ul == prev_l) || (prev_u == prev_l))
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*cdf_index = 1;
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else
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*cdf_index = 0;
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// If 2 or more are identical returns that as predictor, otherwise prev_l.
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if (prev_u == UINT8_MAX) // edge case
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return prev_l == UINT8_MAX ? 0 : prev_l;
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if (prev_l == UINT8_MAX) // edge case
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return prev_u;
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return (prev_ul == prev_u) ? prev_u : prev_l;
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}
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static inline uint8_t av1_get_pred_context_seg_id(const MACROBLOCKD *xd) {
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const MB_MODE_INFO *const above_mi = xd->above_mbmi;
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const MB_MODE_INFO *const left_mi = xd->left_mbmi;
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const int above_sip = (above_mi != NULL) ? above_mi->seg_id_predicted : 0;
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const int left_sip = (left_mi != NULL) ? left_mi->seg_id_predicted : 0;
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return above_sip + left_sip;
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}
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static inline int get_comp_index_context(const AV1_COMMON *cm,
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const MACROBLOCKD *xd) {
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MB_MODE_INFO *mbmi = xd->mi[0];
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const RefCntBuffer *const bck_buf = get_ref_frame_buf(cm, mbmi->ref_frame[0]);
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const RefCntBuffer *const fwd_buf = get_ref_frame_buf(cm, mbmi->ref_frame[1]);
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int bck_frame_index = 0, fwd_frame_index = 0;
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int cur_frame_index = cm->cur_frame->order_hint;
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if (bck_buf != NULL) bck_frame_index = bck_buf->order_hint;
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if (fwd_buf != NULL) fwd_frame_index = fwd_buf->order_hint;
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int fwd = abs(get_relative_dist(&cm->seq_params->order_hint_info,
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fwd_frame_index, cur_frame_index));
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int bck = abs(get_relative_dist(&cm->seq_params->order_hint_info,
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cur_frame_index, bck_frame_index));
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const MB_MODE_INFO *const above_mi = xd->above_mbmi;
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const MB_MODE_INFO *const left_mi = xd->left_mbmi;
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int above_ctx = 0, left_ctx = 0;
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const int offset = (fwd == bck);
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if (above_mi != NULL) {
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if (has_second_ref(above_mi))
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above_ctx = above_mi->compound_idx;
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else if (above_mi->ref_frame[0] == ALTREF_FRAME)
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above_ctx = 1;
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}
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if (left_mi != NULL) {
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if (has_second_ref(left_mi))
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left_ctx = left_mi->compound_idx;
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else if (left_mi->ref_frame[0] == ALTREF_FRAME)
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left_ctx = 1;
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}
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return above_ctx + left_ctx + 3 * offset;
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}
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static inline int get_comp_group_idx_context(const MACROBLOCKD *xd) {
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const MB_MODE_INFO *const above_mi = xd->above_mbmi;
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const MB_MODE_INFO *const left_mi = xd->left_mbmi;
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int above_ctx = 0, left_ctx = 0;
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if (above_mi) {
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if (has_second_ref(above_mi))
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above_ctx = above_mi->comp_group_idx;
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else if (above_mi->ref_frame[0] == ALTREF_FRAME)
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above_ctx = 3;
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}
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if (left_mi) {
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if (has_second_ref(left_mi))
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left_ctx = left_mi->comp_group_idx;
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else if (left_mi->ref_frame[0] == ALTREF_FRAME)
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left_ctx = 3;
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}
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return AOMMIN(5, above_ctx + left_ctx);
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}
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static inline aom_cdf_prob *av1_get_pred_cdf_seg_id(
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struct segmentation_probs *segp, const MACROBLOCKD *xd) {
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return segp->pred_cdf[av1_get_pred_context_seg_id(xd)];
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}
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static inline int av1_get_skip_mode_context(const MACROBLOCKD *xd) {
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const MB_MODE_INFO *const above_mi = xd->above_mbmi;
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const MB_MODE_INFO *const left_mi = xd->left_mbmi;
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const int above_skip_mode = above_mi ? above_mi->skip_mode : 0;
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const int left_skip_mode = left_mi ? left_mi->skip_mode : 0;
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return above_skip_mode + left_skip_mode;
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}
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static inline int av1_get_skip_txfm_context(const MACROBLOCKD *xd) {
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const MB_MODE_INFO *const above_mi = xd->above_mbmi;
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const MB_MODE_INFO *const left_mi = xd->left_mbmi;
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const int above_skip_txfm = above_mi ? above_mi->skip_txfm : 0;
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const int left_skip_txfm = left_mi ? left_mi->skip_txfm : 0;
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return above_skip_txfm + left_skip_txfm;
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}
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int av1_get_pred_context_switchable_interp(const MACROBLOCKD *xd, int dir);
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// Get a list of palette base colors that are used in the above and left blocks,
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// referred to as "color cache". The return value is the number of colors in the
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// cache (<= 2 * PALETTE_MAX_SIZE). The color values are stored in "cache"
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// in ascending order.
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int av1_get_palette_cache(const MACROBLOCKD *const xd, int plane,
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uint16_t *cache);
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static inline int av1_get_palette_bsize_ctx(BLOCK_SIZE bsize) {
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assert(bsize < BLOCK_SIZES_ALL);
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return num_pels_log2_lookup[bsize] - num_pels_log2_lookup[BLOCK_8X8];
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}
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static inline int av1_get_palette_mode_ctx(const MACROBLOCKD *xd) {
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const MB_MODE_INFO *const above_mi = xd->above_mbmi;
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const MB_MODE_INFO *const left_mi = xd->left_mbmi;
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int ctx = 0;
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if (above_mi) ctx += (above_mi->palette_mode_info.palette_size[0] > 0);
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if (left_mi) ctx += (left_mi->palette_mode_info.palette_size[0] > 0);
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return ctx;
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}
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int av1_get_intra_inter_context(const MACROBLOCKD *xd);
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int av1_get_reference_mode_context(const MACROBLOCKD *xd);
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static inline aom_cdf_prob *av1_get_reference_mode_cdf(const MACROBLOCKD *xd) {
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return xd->tile_ctx->comp_inter_cdf[av1_get_reference_mode_context(xd)];
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}
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static inline aom_cdf_prob *av1_get_skip_txfm_cdf(const MACROBLOCKD *xd) {
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return xd->tile_ctx->skip_txfm_cdfs[av1_get_skip_txfm_context(xd)];
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}
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int av1_get_comp_reference_type_context(const MACROBLOCKD *xd);
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// == Uni-directional contexts ==
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int av1_get_pred_context_uni_comp_ref_p(const MACROBLOCKD *xd);
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int av1_get_pred_context_uni_comp_ref_p1(const MACROBLOCKD *xd);
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int av1_get_pred_context_uni_comp_ref_p2(const MACROBLOCKD *xd);
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static inline aom_cdf_prob *av1_get_comp_reference_type_cdf(
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const MACROBLOCKD *xd) {
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const int pred_context = av1_get_comp_reference_type_context(xd);
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return xd->tile_ctx->comp_ref_type_cdf[pred_context];
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}
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static inline aom_cdf_prob *av1_get_pred_cdf_uni_comp_ref_p(
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const MACROBLOCKD *xd) {
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const int pred_context = av1_get_pred_context_uni_comp_ref_p(xd);
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return xd->tile_ctx->uni_comp_ref_cdf[pred_context][0];
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}
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static inline aom_cdf_prob *av1_get_pred_cdf_uni_comp_ref_p1(
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const MACROBLOCKD *xd) {
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const int pred_context = av1_get_pred_context_uni_comp_ref_p1(xd);
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return xd->tile_ctx->uni_comp_ref_cdf[pred_context][1];
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}
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static inline aom_cdf_prob *av1_get_pred_cdf_uni_comp_ref_p2(
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const MACROBLOCKD *xd) {
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const int pred_context = av1_get_pred_context_uni_comp_ref_p2(xd);
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return xd->tile_ctx->uni_comp_ref_cdf[pred_context][2];
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}
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// == Bi-directional contexts ==
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int av1_get_pred_context_comp_ref_p(const MACROBLOCKD *xd);
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int av1_get_pred_context_comp_ref_p1(const MACROBLOCKD *xd);
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int av1_get_pred_context_comp_ref_p2(const MACROBLOCKD *xd);
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int av1_get_pred_context_comp_bwdref_p(const MACROBLOCKD *xd);
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int av1_get_pred_context_comp_bwdref_p1(const MACROBLOCKD *xd);
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static inline aom_cdf_prob *av1_get_pred_cdf_comp_ref_p(const MACROBLOCKD *xd) {
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const int pred_context = av1_get_pred_context_comp_ref_p(xd);
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return xd->tile_ctx->comp_ref_cdf[pred_context][0];
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}
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static inline aom_cdf_prob *av1_get_pred_cdf_comp_ref_p1(
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const MACROBLOCKD *xd) {
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const int pred_context = av1_get_pred_context_comp_ref_p1(xd);
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return xd->tile_ctx->comp_ref_cdf[pred_context][1];
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}
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static inline aom_cdf_prob *av1_get_pred_cdf_comp_ref_p2(
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const MACROBLOCKD *xd) {
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const int pred_context = av1_get_pred_context_comp_ref_p2(xd);
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return xd->tile_ctx->comp_ref_cdf[pred_context][2];
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}
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static inline aom_cdf_prob *av1_get_pred_cdf_comp_bwdref_p(
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const MACROBLOCKD *xd) {
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const int pred_context = av1_get_pred_context_comp_bwdref_p(xd);
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return xd->tile_ctx->comp_bwdref_cdf[pred_context][0];
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}
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static inline aom_cdf_prob *av1_get_pred_cdf_comp_bwdref_p1(
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const MACROBLOCKD *xd) {
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const int pred_context = av1_get_pred_context_comp_bwdref_p1(xd);
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return xd->tile_ctx->comp_bwdref_cdf[pred_context][1];
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}
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// == Single contexts ==
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int av1_get_pred_context_single_ref_p1(const MACROBLOCKD *xd);
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int av1_get_pred_context_single_ref_p2(const MACROBLOCKD *xd);
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int av1_get_pred_context_single_ref_p3(const MACROBLOCKD *xd);
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int av1_get_pred_context_single_ref_p4(const MACROBLOCKD *xd);
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int av1_get_pred_context_single_ref_p5(const MACROBLOCKD *xd);
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int av1_get_pred_context_single_ref_p6(const MACROBLOCKD *xd);
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static inline aom_cdf_prob *av1_get_pred_cdf_single_ref_p1(
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const MACROBLOCKD *xd) {
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return xd->tile_ctx
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->single_ref_cdf[av1_get_pred_context_single_ref_p1(xd)][0];
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}
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static inline aom_cdf_prob *av1_get_pred_cdf_single_ref_p2(
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const MACROBLOCKD *xd) {
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return xd->tile_ctx
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->single_ref_cdf[av1_get_pred_context_single_ref_p2(xd)][1];
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}
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static inline aom_cdf_prob *av1_get_pred_cdf_single_ref_p3(
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const MACROBLOCKD *xd) {
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return xd->tile_ctx
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->single_ref_cdf[av1_get_pred_context_single_ref_p3(xd)][2];
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}
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static inline aom_cdf_prob *av1_get_pred_cdf_single_ref_p4(
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const MACROBLOCKD *xd) {
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return xd->tile_ctx
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->single_ref_cdf[av1_get_pred_context_single_ref_p4(xd)][3];
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}
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static inline aom_cdf_prob *av1_get_pred_cdf_single_ref_p5(
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const MACROBLOCKD *xd) {
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return xd->tile_ctx
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->single_ref_cdf[av1_get_pred_context_single_ref_p5(xd)][4];
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}
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static inline aom_cdf_prob *av1_get_pred_cdf_single_ref_p6(
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const MACROBLOCKD *xd) {
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return xd->tile_ctx
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->single_ref_cdf[av1_get_pred_context_single_ref_p6(xd)][5];
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}
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// Returns a context number for the given MB prediction signal
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// The mode info data structure has a one element border above and to the
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// left of the entries corresponding to real blocks.
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// The prediction flags in these dummy entries are initialized to 0.
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static inline int get_tx_size_context(const MACROBLOCKD *xd) {
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const MB_MODE_INFO *mbmi = xd->mi[0];
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const MB_MODE_INFO *const above_mbmi = xd->above_mbmi;
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const MB_MODE_INFO *const left_mbmi = xd->left_mbmi;
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const TX_SIZE max_tx_size = max_txsize_rect_lookup[mbmi->bsize];
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const int max_tx_wide = tx_size_wide[max_tx_size];
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const int max_tx_high = tx_size_high[max_tx_size];
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const int has_above = xd->up_available;
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const int has_left = xd->left_available;
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int above = xd->above_txfm_context[0] >= max_tx_wide;
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int left = xd->left_txfm_context[0] >= max_tx_high;
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if (has_above)
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if (is_inter_block(above_mbmi))
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above = block_size_wide[above_mbmi->bsize] >= max_tx_wide;
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if (has_left)
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if (is_inter_block(left_mbmi))
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left = block_size_high[left_mbmi->bsize] >= max_tx_high;
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if (has_above && has_left)
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return (above + left);
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else if (has_above)
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return above;
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else if (has_left)
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return left;
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else
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return 0;
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}
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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_PRED_COMMON_H_
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