blob: 99b62d030e370fb645934fb9b95879ae0ffe4e1c [file] [log] [blame] [edit]
/*
* Copyright (c) 2021, Alliance for Open Media. All rights reserved
*
* This source code is subject to the terms of the BSD 3-Clause Clear License
* and the Alliance for Open Media Patent License 1.0. If the BSD 3-Clause Clear
* License was not distributed with this source code in the LICENSE file, you
* can obtain it at aomedia.org/license/software-license/bsd-3-c-c/. 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
* aomedia.org/license/patent-license/.
*/
#ifndef AOM_AV1_COMMON_PRED_COMMON_H_
#define AOM_AV1_COMMON_PRED_COMMON_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
typedef struct {
int pyr_level;
int disp_order;
#if CONFIG_NEW_REF_SIGNALING
int base_qindex;
#endif // CONFIG_NEW_REF_SIGNALING
} RefFrameMapPair;
static INLINE void init_ref_map_pair(AV1_COMMON *cm,
RefFrameMapPair *ref_frame_map_pairs,
int is_key) {
if (is_key) {
memset(ref_frame_map_pairs, -1, sizeof(*ref_frame_map_pairs) * REF_FRAMES);
return;
}
memset(ref_frame_map_pairs, 0, sizeof(*ref_frame_map_pairs) * REF_FRAMES);
for (int map_idx = 0; map_idx < REF_FRAMES; map_idx++) {
// Get reference frame buffer
const RefCntBuffer *const buf = cm->ref_frame_map[map_idx];
if (ref_frame_map_pairs[map_idx].disp_order == -1) continue;
if (buf == NULL) {
ref_frame_map_pairs[map_idx].disp_order = -1;
ref_frame_map_pairs[map_idx].pyr_level = -1;
#if CONFIG_NEW_REF_SIGNALING
ref_frame_map_pairs[map_idx].base_qindex = -1;
#endif // CONFIG_NEW_REF_SIGNALING
continue;
} else if (buf->ref_count > 1) {
// Once the keyframe is coded, the slots in ref_frame_map will all
// point to the same frame. In that case, all subsequent pointers
// matching the current are considered "free" slots. This will find
// the next occurance of the current pointer if ref_count indicates
// there are multiple instances of it and mark it as free.
for (int idx2 = map_idx + 1; idx2 < REF_FRAMES; ++idx2) {
const RefCntBuffer *const buf2 = cm->ref_frame_map[idx2];
if (buf2 == buf) {
ref_frame_map_pairs[idx2].disp_order = -1;
ref_frame_map_pairs[idx2].pyr_level = -1;
#if CONFIG_NEW_REF_SIGNALING
ref_frame_map_pairs[idx2].base_qindex = -1;
#endif // CONFIG_NEW_REF_SIGNALING
}
}
}
ref_frame_map_pairs[map_idx].disp_order = (int)buf->display_order_hint;
ref_frame_map_pairs[map_idx].pyr_level = buf->pyramid_level;
#if CONFIG_NEW_REF_SIGNALING
ref_frame_map_pairs[map_idx].base_qindex = buf->base_qindex;
#endif // CONFIG_NEW_REF_SIGNALING
}
}
#if CONFIG_NEW_REF_SIGNALING
/*!\cond */
typedef struct {
int score;
int index;
int distance;
int disp_order;
int base_qindex;
} RefScoreData;
/*!\endcond */
void av1_get_ref_frames(AV1_COMMON *cm, int cur_frame_disp,
RefFrameMapPair *ref_frame_map_pairs);
// Find the reference that is furthest in the future
static INLINE int get_furthest_future_ref_index(const AV1_COMMON *const cm) {
int index = INVALID_IDX;
int ref_disp_order = -1;
for (int i = 0; i < cm->ref_frames_info.n_future_refs; i++) {
const int ref = cm->ref_frames_info.future_refs[i];
const RefCntBuffer *const buf = get_ref_frame_buf(cm, ref);
if (buf == NULL) continue;
if ((int)buf->display_order_hint > ref_disp_order) {
index = ref;
ref_disp_order = (int)buf->display_order_hint;
}
}
return index;
}
static INLINE int get_closest_ref_index(const AV1_COMMON *const cm) {
int index = INVALID_IDX;
int best_dist = INT_MAX;
for (int ref = 0; ref < cm->ref_frames_info.n_total_refs; ref++) {
const int dist = abs(cm->ref_frames_info.ref_frame_distance[ref]);
if (dist < best_dist) {
index = ref;
best_dist = dist;
}
}
return index;
}
static INLINE int get_closest_past_ref_index(const AV1_COMMON *const cm) {
int index = INVALID_IDX;
int best_dist = INT_MAX;
for (int i = 0; i < cm->ref_frames_info.n_past_refs; i++) {
const int ref = cm->ref_frames_info.past_refs[i];
const int dist = cm->ref_frames_info.ref_frame_distance[ref];
if (dist < best_dist) {
index = ref;
best_dist = dist;
}
}
return index;
}
static INLINE int get_closest_pastcur_ref_index(const AV1_COMMON *const cm) {
if (cm->ref_frames_info.n_cur_refs > 0)
return cm->ref_frames_info.cur_refs[0];
return get_closest_past_ref_index(cm);
}
static INLINE int get_best_past_ref_index(const AV1_COMMON *const cm) {
return cm->ref_frames_info.past_refs[0];
}
// Gets directional i.e. past/future ref rank from overall rank
// in dir_refrank[0]/[1] respectively. Returns 0 if found in past
// list, 1 if found in future list, -1 if not found in either (error).
// Note dir_refrank can be NULL, in which case only the direction
// is returned, the ranks are not output.
static INLINE int get_dir_rank(const AV1_COMMON *const cm, int refrank,
int *dir_refrank) {
if (!is_inter_ref_frame(refrank)) return -1;
assert(refrank < cm->ref_frames_info.n_total_refs);
if (dir_refrank) {
dir_refrank[0] = -1;
dir_refrank[1] = -1;
}
for (int i = 0; i < cm->ref_frames_info.n_past_refs; ++i) {
if (cm->ref_frames_info.past_refs[i] == refrank) {
if (dir_refrank) dir_refrank[0] = i;
return 0;
}
}
for (int i = 0; i < cm->ref_frames_info.n_future_refs; ++i) {
if (cm->ref_frames_info.future_refs[i] == refrank) {
if (dir_refrank) dir_refrank[1] = i;
return 1;
}
}
// If refrank has the same distance as a reference return 0 (past)
// but the dir_refrank[0] is -1
if (cm->ref_frames_info.cur_refs[0] == refrank) return 0;
return -1;
}
#else
void av1_get_ref_frames(AV1_COMMON *const cm, int cur_frame_disp,
RefFrameMapPair *ref_frame_map_pairs);
#endif // CONFIG_NEW_REF_SIGNALING
static INLINE int 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);
int 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 * mi_params->mi_cols + x]);
}
}
assert(segment_id >= 0 && segment_id < MAX_SEGMENTS);
return segment_id;
}
static INLINE int av1_get_spatial_seg_pred(const AV1_COMMON *const cm,
const MACROBLOCKD *const xd,
int *cdf_index) {
int prev_ul = -1; // top left segment_id
int prev_l = -1; // left segment_id
int prev_u = -1; // 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 - 1, mi_col - 1);
}
if (xd->up_available) {
prev_u =
get_segment_id(mi_params, seg_map, BLOCK_4X4, mi_row - 1, mi_col - 0);
}
if (xd->left_available) {
prev_l =
get_segment_id(mi_params, seg_map, BLOCK_4X4, mi_row - 0, mi_col - 1);
}
// This property follows from the fact that get_segment_id() returns a
// nonnegative value. This allows us to test for all edge cases with a simple
// prev_ul < 0 check.
assert(IMPLIES(prev_ul >= 0, prev_u >= 0 && prev_l >= 0));
// Pick CDF index based on number of matching/out-of-bounds segment IDs.
if (prev_ul < 0) /* 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 == -1) // edge case
return prev_l == -1 ? 0 : prev_l;
if (prev_l == -1) // edge case
return prev_u;
return (prev_ul == prev_u) ? prev_u : prev_l;
}
static INLINE int 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_group_idx_context(const AV1_COMMON *cm,
const MACROBLOCKD *xd) {
(void)cm;
MB_MODE_INFO *mbmi = xd->mi[0];
#if CONFIG_NEW_REF_SIGNALING
MV_REFERENCE_FRAME altref_frame = get_furthest_future_ref_index(cm);
#endif // CONFIG_NEW_REF_SIGNALING
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 int offset = (fwd == bck);
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;
#if CONFIG_NEW_REF_SIGNALING
else if (above_mi->ref_frame[0] == altref_frame)
#else
else if (above_mi->ref_frame[0] == ALTREF_FRAME)
#endif // CONFIG_NEW_REF_SIGNALING
above_ctx = 2;
}
if (left_mi) {
if (has_second_ref(left_mi)) left_ctx = left_mi->comp_group_idx;
#if CONFIG_NEW_REF_SIGNALING
else if (left_mi->ref_frame[0] == altref_frame)
#else
else if (left_mi->ref_frame[0] == ALTREF_FRAME)
#endif // CONFIG_NEW_REF_SIGNALING
left_ctx = 2;
}
const int ctxmap[3 * 3] = { 0, 1, 2, 1, 3, 4, 2, 4, 5 };
return ctxmap[3 * above_ctx + left_ctx] + offset * 6;
}
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;
#if CONFIG_SDP
const int above_skip_txfm =
above_mi ? above_mi->skip_txfm[xd->tree_type == CHROMA_PART] : 0;
const int left_skip_txfm =
left_mi ? left_mi->skip_txfm[xd->tree_type == CHROMA_PART] : 0;
#else
const int above_skip_txfm = above_mi ? above_mi->skip_txfm : 0;
const int left_skip_txfm = left_mi ? left_mi->skip_txfm : 0;
#endif
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 AV1_COMMON *cm, const MACROBLOCKD *xd);
static INLINE aom_cdf_prob *av1_get_reference_mode_cdf(const AV1_COMMON *cm,
const MACROBLOCKD *xd) {
return xd->tile_ctx->comp_inter_cdf[av1_get_reference_mode_context(cm, 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)];
}
#if CONFIG_NEW_REF_SIGNALING
// == Single contexts ==
int av1_get_ref_pred_context_nrs(const MACROBLOCKD *xd, MV_REFERENCE_FRAME ref,
int n_total_refs);
static INLINE aom_cdf_prob *av1_get_pred_cdf_single_ref_nrs(
const MACROBLOCKD *xd, MV_REFERENCE_FRAME ref, int n_total_refs) {
assert((ref + 1) < n_total_refs);
return xd->tile_ctx->single_ref_cdf[av1_get_ref_pred_context_nrs(
xd, ref, n_total_refs)][ref];
}
// == Compound contexts ==
static INLINE int av1_get_compound_ref_bit_type(
int n_bits, const RefFramesInfo *const ref_frames_info, int i, int j) {
const int bit_type =
(n_bits == 0 ? 0
: 1 + ((ref_frames_info->ref_frame_distance[i] >= 0) ^
(ref_frames_info->ref_frame_distance[j] >= 0)));
return bit_type;
}
static INLINE aom_cdf_prob *av1_get_pred_cdf_compound_ref_nrs(
const MACROBLOCKD *xd, MV_REFERENCE_FRAME ref, int n_bits, int bit_type,
int n_total_refs) {
assert((ref + 1) < n_total_refs);
assert(n_bits < 2);
assert(ref - n_bits < n_total_refs - 2);
assert(bit_type < COMPREF_BIT_TYPES);
return xd->tile_ctx->comp_ref_cdf[av1_get_ref_pred_context_nrs(
xd, ref, n_total_refs)][bit_type][ref - n_bits];
}
#else
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];
}
#endif // CONFIG_NEW_REF_SIGNALING
// 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;
#if CONFIG_SDP
const TX_SIZE max_tx_size =
max_txsize_rect_lookup[mbmi->sb_type[PLANE_TYPE_Y]];
#else
const TX_SIZE max_tx_size = max_txsize_rect_lookup[mbmi->sb_type];
#endif
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 CONFIG_SDP
if (is_inter_block(above_mbmi, xd->tree_type))
above = block_size_wide[above_mbmi->sb_type[PLANE_TYPE_Y]] >= max_tx_wide;
#else
if (is_inter_block(above_mbmi))
above = block_size_wide[above_mbmi->sb_type] >= max_tx_wide;
#endif
if (has_left)
#if CONFIG_SDP
if (is_inter_block(left_mbmi, xd->tree_type))
left = block_size_high[left_mbmi->sb_type[PLANE_TYPE_Y]] >= max_tx_high;
#else
if (is_inter_block(left_mbmi))
left = block_size_high[left_mbmi->sb_type] >= max_tx_high;
#endif
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_