1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
|
/*
* Copyright (c) 2010 The WebM project authors. All Rights Reserved.
*
* Use of this source code is governed by a BSD-style license
* that can be found in the LICENSE file in the root of the source
* tree. An additional intellectual property rights grant can be found
* in the file PATENTS. All contributing project authors may
* be found in the AUTHORS file in the root of the source tree.
*/
#include <assert.h>
#include "vp9/common/vp9_blockd.h"
#include "vp9/common/vp9_seg_common.h"
static const int seg_feature_data_signed[SEG_LVL_MAX] = { 1, 1, 0, 0 };
static const int seg_feature_data_max[SEG_LVL_MAX] = { MAXQ, 63, 15, 15 };
// These functions provide access to new segment level features.
// Eventually these function may be "optimized out" but for the moment,
// the coding mechanism is still subject to change so these provide a
// convenient single point of change.
int vp9_segfeature_active(const MACROBLOCKD *xd, int segment_id,
SEG_LVL_FEATURES feature_id) {
return xd->segmentation_enabled &&
(xd->segment_feature_mask[segment_id] & (1 << feature_id));
}
void vp9_clearall_segfeatures(MACROBLOCKD *xd) {
vpx_memset(xd->segment_feature_data, 0, sizeof(xd->segment_feature_data));
vpx_memset(xd->segment_feature_mask, 0, sizeof(xd->segment_feature_mask));
}
void vp9_enable_segfeature(MACROBLOCKD *xd, int segment_id,
SEG_LVL_FEATURES feature_id) {
xd->segment_feature_mask[segment_id] |= 1 << feature_id;
}
void vp9_disable_segfeature(MACROBLOCKD *xd, int segment_id,
SEG_LVL_FEATURES feature_id) {
xd->segment_feature_mask[segment_id] &= ~(1 << feature_id);
}
int vp9_seg_feature_data_max(SEG_LVL_FEATURES feature_id) {
return seg_feature_data_max[feature_id];
}
int vp9_is_segfeature_signed(SEG_LVL_FEATURES feature_id) {
return seg_feature_data_signed[feature_id];
}
void vp9_clear_segdata(MACROBLOCKD *xd, int segment_id,
SEG_LVL_FEATURES feature_id) {
xd->segment_feature_data[segment_id][feature_id] = 0;
}
void vp9_set_segdata(MACROBLOCKD *xd, int segment_id,
SEG_LVL_FEATURES feature_id, int seg_data) {
assert(seg_data <= seg_feature_data_max[feature_id]);
if (seg_data < 0) {
assert(seg_feature_data_signed[feature_id]);
assert(-seg_data <= seg_feature_data_max[feature_id]);
}
xd->segment_feature_data[segment_id][feature_id] = seg_data;
}
int vp9_get_segdata(const MACROBLOCKD *xd, int segment_id,
SEG_LVL_FEATURES feature_id) {
return xd->segment_feature_data[segment_id][feature_id];
}
void vp9_clear_segref(MACROBLOCKD *xd, int segment_id) {
xd->segment_feature_data[segment_id][SEG_LVL_REF_FRAME] = 0;
}
void vp9_set_segref(MACROBLOCKD *xd, int segment_id,
MV_REFERENCE_FRAME ref_frame) {
xd->segment_feature_data[segment_id][SEG_LVL_REF_FRAME] |= 1 << ref_frame;
}
int vp9_check_segref(const MACROBLOCKD *xd, int segment_id,
MV_REFERENCE_FRAME ref_frame) {
return (xd->segment_feature_data[segment_id][SEG_LVL_REF_FRAME] &
(1 << ref_frame)) ? 1 : 0;
}
#if CONFIG_IMPLICIT_SEGMENTATION
// This function defines an implicit segmentation for the next frame based
// on predcition and transform decisions in the current frame.
// For test purposes at the moment only TX size is used.
void vp9_implicit_segment_map_update(VP9_COMMON * cm) {
int row, col;
MODE_INFO *mi, *mi_ptr = cm->mi;
unsigned char * map_ptr = cm->last_frame_seg_map;
for (row = 0; row < cm->mb_rows; row++) {
mi = mi_ptr;
// Experimental use of tx size to define implicit segmentation
for (col = 0; col < cm->mb_cols; ++col, ++mi) {
map_ptr[col] = mi->mbmi.txfm_size;
}
mi_ptr += cm->mode_info_stride;
map_ptr += cm->mb_cols;
}
}
#endif
// TBD? Functions to read and write segment data with range / validity checking
|
