vp9_seg_common.c 3.89 KB
Newer Older
1
2
3
4
5
6
7
8
9
10
/*
 *  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.
 */

John Koleszar's avatar
John Koleszar committed
11
12
#include <assert.h>
#include "vp9/common/vp9_blockd.h"
13
#include "vp9/common/vp9_seg_common.h"
14

15
static const int segfeaturedata_signed[SEG_LVL_MAX] = { 1, 1, 0, 0, 0, 0 };
John Koleszar's avatar
John Koleszar committed
16
static const int seg_feature_data_max[SEG_LVL_MAX] =
17
                 { MAXQ, 63, 0xf, MB_MODE_COUNT - 1, 255, TX_SIZE_MAX_SB - 1};
18
19
20
21
22
23

// 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.

24
25
26
int vp9_segfeature_active(const MACROBLOCKD *xd,
                          int segment_id,
                          SEG_LVL_FEATURES feature_id) {
John Koleszar's avatar
John Koleszar committed
27
28
29
30
  // Return true if mask bit set and segmentation enabled.
  return (xd->segmentation_enabled &&
          (xd->segment_feature_mask[segment_id] &
           (0x01 << feature_id)));
31
32
}

33
void vp9_clearall_segfeatures(MACROBLOCKD *xd) {
John Koleszar's avatar
John Koleszar committed
34
35
  vpx_memset(xd->segment_feature_data, 0, sizeof(xd->segment_feature_data));
  vpx_memset(xd->segment_feature_mask, 0, sizeof(xd->segment_feature_mask));
36
37
}

38
39
40
void vp9_enable_segfeature(MACROBLOCKD *xd,
                           int segment_id,
                           SEG_LVL_FEATURES feature_id) {
John Koleszar's avatar
John Koleszar committed
41
  xd->segment_feature_mask[segment_id] |= (0x01 << feature_id);
42
43
}

44
45
46
void vp9_disable_segfeature(MACROBLOCKD *xd,
                            int segment_id,
                            SEG_LVL_FEATURES feature_id) {
John Koleszar's avatar
John Koleszar committed
47
  xd->segment_feature_mask[segment_id] &= ~(1 << feature_id);
48
49
}

John Koleszar's avatar
John Koleszar committed
50
51
int vp9_seg_feature_data_max(SEG_LVL_FEATURES feature_id) {
  return seg_feature_data_max[feature_id];
52
53
}

54
int vp9_is_segfeature_signed(SEG_LVL_FEATURES feature_id) {
John Koleszar's avatar
John Koleszar committed
55
  return (segfeaturedata_signed[feature_id]);
56
57
}

58
59
60
void vp9_clear_segdata(MACROBLOCKD *xd,
                       int segment_id,
                       SEG_LVL_FEATURES feature_id) {
John Koleszar's avatar
John Koleszar committed
61
  xd->segment_feature_data[segment_id][feature_id] = 0;
62
63
}

64
65
66
67
void vp9_set_segdata(MACROBLOCKD *xd,
                     int segment_id,
                     SEG_LVL_FEATURES feature_id,
                     int seg_data) {
John Koleszar's avatar
John Koleszar committed
68
69
70
71
72
73
  assert(seg_data <= seg_feature_data_max[feature_id]);
  if (seg_data < 0) {
    assert(segfeaturedata_signed[feature_id]);
    assert(-seg_data <= seg_feature_data_max[feature_id]);
  }

John Koleszar's avatar
John Koleszar committed
74
  xd->segment_feature_data[segment_id][feature_id] = seg_data;
75
76
}

77
78
79
int vp9_get_segdata(const MACROBLOCKD *xd,
                    int segment_id,
                    SEG_LVL_FEATURES feature_id) {
John Koleszar's avatar
John Koleszar committed
80
  return xd->segment_feature_data[segment_id][feature_id];
81
}
82
83

void vp9_clear_segref(MACROBLOCKD *xd, int segment_id) {
John Koleszar's avatar
John Koleszar committed
84
  xd->segment_feature_data[segment_id][SEG_LVL_REF_FRAME] = 0;
85
86
}

87
88
89
void vp9_set_segref(MACROBLOCKD *xd,
                    int segment_id,
                    MV_REFERENCE_FRAME ref_frame) {
John Koleszar's avatar
John Koleszar committed
90
91
  xd->segment_feature_data[segment_id][SEG_LVL_REF_FRAME] |=
    (1 << ref_frame);
92
93
}

94
95
96
int vp9_check_segref(const MACROBLOCKD *xd,
                     int segment_id,
                     MV_REFERENCE_FRAME ref_frame) {
John Koleszar's avatar
John Koleszar committed
97
98
  return (xd->segment_feature_data[segment_id][SEG_LVL_REF_FRAME] &
          (1 << ref_frame)) ? 1 : 0;
99
100
}

101
int vp9_check_segref_inter(MACROBLOCKD *xd, int segment_id) {
John Koleszar's avatar
John Koleszar committed
102
103
  return (xd->segment_feature_data[segment_id][SEG_LVL_REF_FRAME] &
          ~(1 << INTRA_FRAME)) ? 1 : 0;
104
105
}

106
107
108
int vp9_get_seg_tx_type(MACROBLOCKD *xd, int segment_id) {
  if (vp9_segfeature_active(xd, segment_id, SEG_LVL_TRANSFORM))
    return vp9_get_segdata(xd, segment_id, SEG_LVL_TRANSFORM);
John Koleszar's avatar
John Koleszar committed
109
110
  else
    return TX_4X4;
111
112
}
// TBD? Functions to read and write segment data with range / validity checking