1 /*
2 * Copyright (c) 2012 The WebM project authors. All Rights Reserved.
3 *
4 * Use of this source code is governed by a BSD-style license
5 * that can be found in the LICENSE file in the root of the source
6 * tree. An additional intellectual property rights grant can be found
7 * in the file PATENTS. All contributing project authors may
8 * be found in the AUTHORS file in the root of the source tree.
9 */
10
11 #ifndef VPX_VP9_COMMON_VP9_SEG_COMMON_H_
12 #define VPX_VP9_COMMON_VP9_SEG_COMMON_H_
13
14 #include "vpx_dsp/prob.h"
15
16 #ifdef __cplusplus
17 extern "C" {
18 #endif
19
20 #define SEGMENT_DELTADATA 0
21 #define SEGMENT_ABSDATA 1
22
23 #define MAX_SEGMENTS 8
24 #define SEG_TREE_PROBS (MAX_SEGMENTS - 1)
25
26 #define PREDICTION_PROBS 3
27
28 // Segment ID used to skip background encoding
29 #define BACKGROUND_SEG_SKIP_ID 3
30 // Number of frames that don't skip after a key frame
31 #define FRAMES_NO_SKIPPING_AFTER_KEY 20
32
33 // Segment level features.
34 typedef enum {
35 SEG_LVL_ALT_Q = 0, // Use alternate Quantizer ....
36 SEG_LVL_ALT_LF = 1, // Use alternate loop filter value...
37 SEG_LVL_REF_FRAME = 2, // Optional Segment reference frame
38 SEG_LVL_SKIP = 3, // Optional Segment (0,0) + skip mode
39 SEG_LVL_MAX = 4 // Number of features supported
40 } SEG_LVL_FEATURES;
41
42 struct segmentation {
43 uint8_t enabled;
44 uint8_t update_map;
45 uint8_t update_data;
46 uint8_t abs_delta;
47 uint8_t temporal_update;
48
49 vpx_prob tree_probs[SEG_TREE_PROBS];
50 vpx_prob pred_probs[PREDICTION_PROBS];
51
52 int16_t feature_data[MAX_SEGMENTS][SEG_LVL_MAX];
53 uint32_t feature_mask[MAX_SEGMENTS];
54 int aq_av_offset;
55 };
56
segfeature_active(const struct segmentation * seg,int segment_id,SEG_LVL_FEATURES feature_id)57 static INLINE int segfeature_active(const struct segmentation *seg,
58 int segment_id,
59 SEG_LVL_FEATURES feature_id) {
60 return seg->enabled && (seg->feature_mask[segment_id] & (1 << feature_id));
61 }
62
63 void vp9_clearall_segfeatures(struct segmentation *seg);
64
65 void vp9_enable_segfeature(struct segmentation *seg, int segment_id,
66 SEG_LVL_FEATURES feature_id);
67
68 int vp9_seg_feature_data_max(SEG_LVL_FEATURES feature_id);
69
70 int vp9_is_segfeature_signed(SEG_LVL_FEATURES feature_id);
71
72 void vp9_set_segdata(struct segmentation *seg, int segment_id,
73 SEG_LVL_FEATURES feature_id, int seg_data);
74
get_segdata(const struct segmentation * seg,int segment_id,SEG_LVL_FEATURES feature_id)75 static INLINE int get_segdata(const struct segmentation *seg, int segment_id,
76 SEG_LVL_FEATURES feature_id) {
77 return seg->feature_data[segment_id][feature_id];
78 }
79
80 extern const vpx_tree_index vp9_segment_tree[TREE_SIZE(MAX_SEGMENTS)];
81
82 #ifdef __cplusplus
83 } // extern "C"
84 #endif
85
86 #endif // VPX_VP9_COMMON_VP9_SEG_COMMON_H_
87