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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 AV1_COMMON_SEG_COMMON_H_
#define AV1_COMMON_SEG_COMMON_H_
#include "aom_dsp/prob.h"
#ifdef __cplusplus
extern "C" {
#endif
#define MAX_SEGMENTS 8
#define SEG_TREE_PROBS (MAX_SEGMENTS - 1)
#define SEG_TEMPORAL_PRED_CTXS 3
#define SPATIAL_PREDICTION_PROBS 3
typedef enum {
SEG_LVL_ALT_Q, // Use alternate Quantizer ....
SEG_LVL_ALT_LF_Y_V, // Use alternate loop filter value on y plane vertical
SEG_LVL_ALT_LF_Y_H, // Use alternate loop filter value on y plane horizontal
SEG_LVL_ALT_LF_U, // Use alternate loop filter value on u plane
SEG_LVL_ALT_LF_V, // Use alternate loop filter value on v plane
SEG_LVL_REF_FRAME, // Optional Segment reference frame
SEG_LVL_SKIP, // Optional Segment (0,0) + skip mode
SEG_LVL_GLOBALMV,
SEG_LVL_MAX
} SEG_LVL_FEATURES;
struct segmentation {
uint8_t enabled;
uint8_t update_map;
uint8_t update_data;
uint8_t temporal_update;
int16_t feature_data[MAX_SEGMENTS][SEG_LVL_MAX];
unsigned int feature_mask[MAX_SEGMENTS];
int last_active_segid; // The highest numbered segment id that has some
// enabled feature.
uint8_t segid_preskip; // Whether the segment id will be read before the
// skip syntax element.
// 1: the segment id will be read first.
// 0: the skip syntax element will be read first.
};
struct segmentation_probs {
aom_cdf_prob tree_cdf[CDF_SIZE(MAX_SEGMENTS)];
aom_cdf_prob pred_cdf[SEG_TEMPORAL_PRED_CTXS][CDF_SIZE(2)];
aom_cdf_prob spatial_pred_seg_cdf[SPATIAL_PREDICTION_PROBS]
[CDF_SIZE(MAX_SEGMENTS)];
};
static INLINE int segfeature_active(const struct segmentation *seg,
int segment_id,
SEG_LVL_FEATURES feature_id) {
return seg->enabled && (seg->feature_mask[segment_id] & (1 << feature_id));
}
static INLINE void segfeatures_copy(struct segmentation *dst,
const struct segmentation *src) {
int i, j;
for (i = 0; i < MAX_SEGMENTS; i++) {
dst->feature_mask[i] = src->feature_mask[i];
for (j = 0; j < SEG_LVL_MAX; j++) {
dst->feature_data[i][j] = src->feature_data[i][j];
}
}
dst->segid_preskip = src->segid_preskip;
dst->last_active_segid = src->last_active_segid;
}
void av1_clearall_segfeatures(struct segmentation *seg);
void av1_enable_segfeature(struct segmentation *seg, int segment_id,
SEG_LVL_FEATURES feature_id);
void calculate_segdata(struct segmentation *seg);
int av1_seg_feature_data_max(SEG_LVL_FEATURES feature_id);
int av1_is_segfeature_signed(SEG_LVL_FEATURES feature_id);
void av1_set_segdata(struct segmentation *seg, int segment_id,
SEG_LVL_FEATURES feature_id, int seg_data);
static INLINE int get_segdata(const struct segmentation *seg, int segment_id,
SEG_LVL_FEATURES feature_id) {
return seg->feature_data[segment_id][feature_id];
}
#ifdef __cplusplus
} // extern "C"
#endif
#endif // AV1_COMMON_SEG_COMMON_H_
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