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