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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_CONTEXT_TREE_H_
12 #define VP9_ENCODER_VP9_CONTEXT_TREE_H_
13 
14 #include "vp9/common/vp9_blockd.h"
15 #include "vp9/encoder/vp9_block.h"
16 
17 #ifdef __cplusplus
18 extern "C" {
19 #endif
20 
21 struct VP9_COMP;
22 struct VP9Common;
23 struct ThreadData;
24 
25 // Structure to hold snapshot of coding context during the mode picking process
26 typedef struct {
27   MODE_INFO mic;
28   MB_MODE_INFO_EXT mbmi_ext;
29   uint8_t *zcoeff_blk;
30   tran_low_t *coeff[MAX_MB_PLANE][3];
31   tran_low_t *qcoeff[MAX_MB_PLANE][3];
32   tran_low_t *dqcoeff[MAX_MB_PLANE][3];
33   uint16_t *eobs[MAX_MB_PLANE][3];
34 
35   // dual buffer pointers, 0: in use, 1: best in store
36   tran_low_t *coeff_pbuf[MAX_MB_PLANE][3];
37   tran_low_t *qcoeff_pbuf[MAX_MB_PLANE][3];
38   tran_low_t *dqcoeff_pbuf[MAX_MB_PLANE][3];
39   uint16_t *eobs_pbuf[MAX_MB_PLANE][3];
40 
41   int is_coded;
42   int num_4x4_blk;
43   int skip;
44   int pred_pixel_ready;
45   // For current partition, only if all Y, U, and V transform blocks'
46   // coefficients are quantized to 0, skippable is set to 0.
47   int skippable;
48   uint8_t skip_txfm[MAX_MB_PLANE << 2];
49   int best_mode_index;
50   int hybrid_pred_diff;
51   int comp_pred_diff;
52   int single_pred_diff;
53   int64_t best_filter_diff[SWITCHABLE_FILTER_CONTEXTS];
54 
55   // TODO(jingning) Use RD_COST struct here instead. This involves a boarder
56   // scope of refactoring.
57   int rate;
58   int64_t dist;
59 
60 #if CONFIG_VP9_TEMPORAL_DENOISING
61   unsigned int newmv_sse;
62   unsigned int zeromv_sse;
63   unsigned int zeromv_lastref_sse;
64   PREDICTION_MODE best_sse_inter_mode;
65   int_mv best_sse_mv;
66   MV_REFERENCE_FRAME best_reference_frame;
67   MV_REFERENCE_FRAME best_zeromv_reference_frame;
68 #endif
69 
70   // motion vector cache for adaptive motion search control in partition
71   // search loop
72   MV pred_mv[MAX_REF_FRAMES];
73   INTERP_FILTER pred_interp_filter;
74 
75   // Used for the machine learning-based early termination
76   int32_t sum_y_eobs;
77 } PICK_MODE_CONTEXT;
78 
79 typedef struct PC_TREE {
80   int index;
81   PARTITION_TYPE partitioning;
82   BLOCK_SIZE block_size;
83   PICK_MODE_CONTEXT none;
84   PICK_MODE_CONTEXT horizontal[2];
85   PICK_MODE_CONTEXT vertical[2];
86   union {
87     struct PC_TREE *split[4];
88     PICK_MODE_CONTEXT *leaf_split[4];
89   };
90 } PC_TREE;
91 
92 void vp9_setup_pc_tree(struct VP9Common *cm, struct ThreadData *td);
93 void vp9_free_pc_tree(struct ThreadData *td);
94 
95 #ifdef __cplusplus
96 }  // extern "C"
97 #endif
98 
99 #endif /* VP9_ENCODER_VP9_CONTEXT_TREE_H_ */
100