83 строки
2.3 KiB
C
83 строки
2.3 KiB
C
/*
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* Copyright (c) 2012 The WebM project authors. All Rights Reserved.
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*
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* Use of this source code is governed by a BSD-style license
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* that can be found in the LICENSE file in the root of the source
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* tree. An additional intellectual property rights grant can be found
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* in the file PATENTS. All contributing project authors may
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* be found in the AUTHORS file in the root of the source tree.
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*/
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#ifndef VP9_COMMON_VP9_SEG_COMMON_H_
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#define VP9_COMMON_VP9_SEG_COMMON_H_
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#include "vp9/common/vp9_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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vp9_prob tree_probs[SEG_TREE_PROBS];
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vp9_prob pred_probs[PREDICTION_PROBS];
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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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int vp9_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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void vp9_clearall_segfeatures(struct segmentation *seg);
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void vp9_enable_segfeature(struct segmentation *seg,
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int segment_id,
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SEG_LVL_FEATURES feature_id);
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int vp9_seg_feature_data_max(SEG_LVL_FEATURES feature_id);
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int vp9_is_segfeature_signed(SEG_LVL_FEATURES feature_id);
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void vp9_set_segdata(struct segmentation *seg,
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int segment_id,
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SEG_LVL_FEATURES feature_id,
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int seg_data);
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int vp9_get_segdata(const struct segmentation *seg,
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int segment_id,
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SEG_LVL_FEATURES feature_id);
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extern const vp9_tree_index vp9_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 // VP9_COMMON_VP9_SEG_COMMON_H_
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