87 строки
2.6 KiB
C
87 строки
2.6 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 AV1_COMMON_SEG_COMMON_H_
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#define AV1_COMMON_SEG_COMMON_H_
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#include "aom_dsp/prob.h"
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#ifdef __cplusplus
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extern "C" {
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#endif
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#define SEGMENT_DELTADATA 0
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#define SEGMENT_ABSDATA 1
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#define MAX_SEGMENTS 8
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#define SEG_TREE_PROBS (MAX_SEGMENTS - 1)
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#define PREDICTION_PROBS 3
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// Segment level features.
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typedef enum {
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SEG_LVL_ALT_Q = 0, // Use alternate Quantizer ....
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SEG_LVL_ALT_LF = 1, // Use alternate loop filter value...
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SEG_LVL_REF_FRAME = 2, // Optional Segment reference frame
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SEG_LVL_SKIP = 3, // Optional Segment (0,0) + skip mode
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SEG_LVL_MAX = 4 // Number of features supported
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} SEG_LVL_FEATURES;
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struct segmentation {
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uint8_t enabled;
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uint8_t update_map;
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uint8_t update_data;
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uint8_t abs_delta;
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uint8_t temporal_update;
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int16_t feature_data[MAX_SEGMENTS][SEG_LVL_MAX];
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unsigned int feature_mask[MAX_SEGMENTS];
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};
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struct segmentation_probs {
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aom_prob tree_probs[SEG_TREE_PROBS];
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#if CONFIG_EC_MULTISYMBOL
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aom_cdf_prob tree_cdf[CDF_SIZE(MAX_SEGMENTS)];
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#endif
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aom_prob pred_probs[PREDICTION_PROBS];
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};
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static INLINE int segfeature_active(const struct segmentation *seg,
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int segment_id,
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SEG_LVL_FEATURES feature_id) {
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return seg->enabled && (seg->feature_mask[segment_id] & (1 << feature_id));
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}
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void av1_clearall_segfeatures(struct segmentation *seg);
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void av1_enable_segfeature(struct segmentation *seg, int segment_id,
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SEG_LVL_FEATURES feature_id);
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int av1_seg_feature_data_max(SEG_LVL_FEATURES feature_id);
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int av1_is_segfeature_signed(SEG_LVL_FEATURES feature_id);
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void av1_set_segdata(struct segmentation *seg, int segment_id,
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SEG_LVL_FEATURES feature_id, int seg_data);
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static INLINE int get_segdata(const struct segmentation *seg, int segment_id,
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SEG_LVL_FEATURES feature_id) {
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return seg->feature_data[segment_id][feature_id];
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}
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extern const aom_tree_index av1_segment_tree[TREE_SIZE(MAX_SEGMENTS)];
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#ifdef __cplusplus
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} // extern "C"
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#endif
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#endif // AV1_COMMON_SEG_COMMON_H_
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