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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 SEGMENT_DELTADATA 0
#define SEGMENT_ABSDATA 1
#define MAX_SEGMENTS 8
#define SEG_TREE_PROBS (MAX_SEGMENTS - 1)
#define PREDICTION_PROBS 3
// Segment level features.
typedef enum {
SEG_LVL_ALT_Q = 0, // Use alternate Quantizer ....
SEG_LVL_ALT_LF = 1, // Use alternate loop filter value...
SEG_LVL_REF_FRAME = 2, // Optional Segment reference frame
SEG_LVL_SKIP = 3, // Optional Segment (0,0) + skip mode
SEG_LVL_MAX = 4 // Number of features supported
} SEG_LVL_FEATURES;
struct segmentation {
uint8_t enabled;
uint8_t update_map;
uint8_t update_data;
uint8_t abs_delta;
uint8_t temporal_update;
int16_t feature_data[MAX_SEGMENTS][SEG_LVL_MAX];
unsigned int feature_mask[MAX_SEGMENTS];
};
struct segmentation_probs {
aom_prob tree_probs[SEG_TREE_PROBS];
aom_cdf_prob tree_cdf[CDF_SIZE(MAX_SEGMENTS)];
aom_prob pred_probs[PREDICTION_PROBS];
};
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));
}
void av1_clearall_segfeatures(struct segmentation *seg);
void av1_enable_segfeature(struct segmentation *seg, int segment_id,
SEG_LVL_FEATURES feature_id);
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];
}
extern const aom_tree_index av1_segment_tree[TREE_SIZE(MAX_SEGMENTS)];
#ifdef __cplusplus
} // extern "C"
#endif
#endif // AV1_COMMON_SEG_COMMON_H_
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