Line data Source code
1 : /*
2 : * Copyright (c) 2014 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 VP9_ENCODER_VP9_AQ_CYCLICREFRESH_H_
12 : #define VP9_ENCODER_VP9_AQ_CYCLICREFRESH_H_
13 :
14 : #include "vpx/vpx_integer.h"
15 : #include "vp9/common/vp9_blockd.h"
16 : #include "vp9/encoder/vp9_block.h"
17 : #include "vp9/encoder/vp9_skin_detection.h"
18 :
19 : #ifdef __cplusplus
20 : extern "C" {
21 : #endif
22 :
23 : // The segment ids used in cyclic refresh: from base (no boost) to increasing
24 : // boost (higher delta-qp).
25 : #define CR_SEGMENT_ID_BASE 0
26 : #define CR_SEGMENT_ID_BOOST1 1
27 : #define CR_SEGMENT_ID_BOOST2 2
28 :
29 : // Maximum rate target ratio for setting segment delta-qp.
30 : #define CR_MAX_RATE_TARGET_RATIO 4.0
31 :
32 : struct CYCLIC_REFRESH {
33 : // Percentage of blocks per frame that are targeted as candidates
34 : // for cyclic refresh.
35 : int percent_refresh;
36 : // Maximum q-delta as percentage of base q.
37 : int max_qdelta_perc;
38 : // Superblock starting index for cycling through the frame.
39 : int sb_index;
40 : // Controls how long block will need to wait to be refreshed again, in
41 : // excess of the cycle time, i.e., in the case of all zero motion, block
42 : // will be refreshed every (100/percent_refresh + time_for_refresh) frames.
43 : int time_for_refresh;
44 : // Target number of (8x8) blocks that are set for delta-q.
45 : int target_num_seg_blocks;
46 : // Actual number of (8x8) blocks that were applied delta-q.
47 : int actual_num_seg1_blocks;
48 : int actual_num_seg2_blocks;
49 : // RD mult. parameters for segment 1.
50 : int rdmult;
51 : // Cyclic refresh map.
52 : signed char *map;
53 : // Map of the last q a block was coded at.
54 : uint8_t *last_coded_q_map;
55 : // Thresholds applied to the projected rate/distortion of the coding block,
56 : // when deciding whether block should be refreshed.
57 : int64_t thresh_rate_sb;
58 : int64_t thresh_dist_sb;
59 : // Threshold applied to the motion vector (in units of 1/8 pel) of the
60 : // coding block, when deciding whether block should be refreshed.
61 : int16_t motion_thresh;
62 : // Rate target ratio to set q delta.
63 : double rate_ratio_qdelta;
64 : // Boost factor for rate target ratio, for segment CR_SEGMENT_ID_BOOST2.
65 : int rate_boost_fac;
66 : double low_content_avg;
67 : int qindex_delta[3];
68 : int reduce_refresh;
69 : };
70 :
71 : struct VP9_COMP;
72 :
73 : typedef struct CYCLIC_REFRESH CYCLIC_REFRESH;
74 :
75 : CYCLIC_REFRESH *vp9_cyclic_refresh_alloc(int mi_rows, int mi_cols);
76 :
77 : void vp9_cyclic_refresh_free(CYCLIC_REFRESH *cr);
78 :
79 : // Estimate the bits, incorporating the delta-q from segment 1, after encoding
80 : // the frame.
81 : int vp9_cyclic_refresh_estimate_bits_at_q(const struct VP9_COMP *cpi,
82 : double correction_factor);
83 :
84 : // Estimate the bits per mb, for a given q = i and a corresponding delta-q
85 : // (for segment 1), prior to encoding the frame.
86 : int vp9_cyclic_refresh_rc_bits_per_mb(const struct VP9_COMP *cpi, int i,
87 : double correction_factor);
88 :
89 : // Prior to coding a given prediction block, of size bsize at (mi_row, mi_col),
90 : // check if we should reset the segment_id, and update the cyclic_refresh map
91 : // and segmentation map.
92 : void vp9_cyclic_refresh_update_segment(struct VP9_COMP *const cpi,
93 : MODE_INFO *const mi, int mi_row,
94 : int mi_col, BLOCK_SIZE bsize,
95 : int64_t rate, int64_t dist, int skip,
96 : struct macroblock_plane *const p);
97 :
98 : void vp9_cyclic_refresh_update_sb_postencode(struct VP9_COMP *const cpi,
99 : const MODE_INFO *const mi,
100 : int mi_row, int mi_col,
101 : BLOCK_SIZE bsize);
102 :
103 : // Update the segmentation map, and related quantities: cyclic refresh map,
104 : // refresh sb_index, and target number of blocks to be refreshed.
105 : void vp9_cyclic_refresh_update__map(struct VP9_COMP *const cpi);
106 :
107 : // Update the actual number of blocks that were applied the segment delta q.
108 : void vp9_cyclic_refresh_postencode(struct VP9_COMP *const cpi);
109 :
110 : // Set golden frame update interval, for non-svc 1 pass CBR mode.
111 : void vp9_cyclic_refresh_set_golden_update(struct VP9_COMP *const cpi);
112 :
113 : // Check if we should not update golden reference, based on past refresh stats.
114 : void vp9_cyclic_refresh_check_golden_update(struct VP9_COMP *const cpi);
115 :
116 : // Set/update global/frame level refresh parameters.
117 : void vp9_cyclic_refresh_update_parameters(struct VP9_COMP *const cpi);
118 :
119 : // Setup cyclic background refresh: set delta q and segmentation map.
120 : void vp9_cyclic_refresh_setup(struct VP9_COMP *const cpi);
121 :
122 : int vp9_cyclic_refresh_get_rdmult(const CYCLIC_REFRESH *cr);
123 :
124 : void vp9_cyclic_refresh_reset_resize(struct VP9_COMP *const cpi);
125 :
126 0 : static INLINE int cyclic_refresh_segment_id_boosted(int segment_id) {
127 0 : return segment_id == CR_SEGMENT_ID_BOOST1 ||
128 : segment_id == CR_SEGMENT_ID_BOOST2;
129 : }
130 :
131 0 : static INLINE int cyclic_refresh_segment_id(int segment_id) {
132 0 : if (segment_id == CR_SEGMENT_ID_BOOST1)
133 0 : return CR_SEGMENT_ID_BOOST1;
134 0 : else if (segment_id == CR_SEGMENT_ID_BOOST2)
135 0 : return CR_SEGMENT_ID_BOOST2;
136 : else
137 0 : return CR_SEGMENT_ID_BASE;
138 : }
139 :
140 : #ifdef __cplusplus
141 : } // extern "C"
142 : #endif
143 :
144 : #endif // VP9_ENCODER_VP9_AQ_CYCLICREFRESH_H_
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