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1 /*
2  *  Copyright (c) 2010 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_ENUMS_H_
12 #define VPX_VP9_COMMON_VP9_ENUMS_H_
13 
14 #include "./vpx_config.h"
15 #include "vpx/vpx_integer.h"
16 
17 #ifdef __cplusplus
18 extern "C" {
19 #endif
20 
21 #define MI_SIZE_LOG2 3
22 #define MI_BLOCK_SIZE_LOG2 (6 - MI_SIZE_LOG2)  // 64 = 2^6
23 
24 #define MI_SIZE (1 << MI_SIZE_LOG2)              // pixels per mi-unit
25 #define MI_BLOCK_SIZE (1 << MI_BLOCK_SIZE_LOG2)  // mi-units per max block
26 
27 #define MI_MASK (MI_BLOCK_SIZE - 1)
28 
29 // Bitstream profiles indicated by 2-3 bits in the uncompressed header.
30 // 00: Profile 0.  8-bit 4:2:0 only.
31 // 10: Profile 1.  8-bit 4:4:4, 4:2:2, and 4:4:0.
32 // 01: Profile 2.  10-bit and 12-bit color only, with 4:2:0 sampling.
33 // 110: Profile 3. 10-bit and 12-bit color only, with 4:2:2/4:4:4/4:4:0
34 //                 sampling.
35 // 111: Undefined profile.
36 typedef enum BITSTREAM_PROFILE {
37   PROFILE_0,
38   PROFILE_1,
39   PROFILE_2,
40   PROFILE_3,
41   MAX_PROFILES
42 } BITSTREAM_PROFILE;
43 
44 #define BLOCK_4X4 0
45 #define BLOCK_4X8 1
46 #define BLOCK_8X4 2
47 #define BLOCK_8X8 3
48 #define BLOCK_8X16 4
49 #define BLOCK_16X8 5
50 #define BLOCK_16X16 6
51 #define BLOCK_16X32 7
52 #define BLOCK_32X16 8
53 #define BLOCK_32X32 9
54 #define BLOCK_32X64 10
55 #define BLOCK_64X32 11
56 #define BLOCK_64X64 12
57 #define BLOCK_SIZES 13
58 #define BLOCK_INVALID BLOCK_SIZES
59 typedef uint8_t BLOCK_SIZE;
60 
61 typedef enum PARTITION_TYPE {
62   PARTITION_NONE,
63   PARTITION_HORZ,
64   PARTITION_VERT,
65   PARTITION_SPLIT,
66   PARTITION_TYPES,
67   PARTITION_INVALID = PARTITION_TYPES
68 } PARTITION_TYPE;
69 
70 typedef char PARTITION_CONTEXT;
71 #define PARTITION_PLOFFSET 4  // number of probability models per block size
72 #define PARTITION_CONTEXTS (4 * PARTITION_PLOFFSET)
73 
74 // block transform size
75 typedef uint8_t TX_SIZE;
76 #define TX_4X4 ((TX_SIZE)0)    // 4x4 transform
77 #define TX_8X8 ((TX_SIZE)1)    // 8x8 transform
78 #define TX_16X16 ((TX_SIZE)2)  // 16x16 transform
79 #define TX_32X32 ((TX_SIZE)3)  // 32x32 transform
80 #define TX_SIZES ((TX_SIZE)4)
81 
82 // frame transform mode
83 typedef enum {
84   ONLY_4X4 = 0,        // only 4x4 transform used
85   ALLOW_8X8 = 1,       // allow block transform size up to 8x8
86   ALLOW_16X16 = 2,     // allow block transform size up to 16x16
87   ALLOW_32X32 = 3,     // allow block transform size up to 32x32
88   TX_MODE_SELECT = 4,  // transform specified for each block
89   TX_MODES = 5,
90 } TX_MODE;
91 
92 typedef enum {
93   DCT_DCT = 0,    // DCT  in both horizontal and vertical
94   ADST_DCT = 1,   // ADST in vertical, DCT in horizontal
95   DCT_ADST = 2,   // DCT  in vertical, ADST in horizontal
96   ADST_ADST = 3,  // ADST in both directions
97   TX_TYPES = 4
98 } TX_TYPE;
99 
100 typedef enum {
101   VP9_LAST_FLAG = 1 << 0,
102   VP9_GOLD_FLAG = 1 << 1,
103   VP9_ALT_FLAG = 1 << 2,
104 } VP9_REFFRAME;
105 
106 typedef enum { PLANE_TYPE_Y = 0, PLANE_TYPE_UV = 1, PLANE_TYPES } PLANE_TYPE;
107 
108 #define DC_PRED 0    // Average of above and left pixels
109 #define V_PRED 1     // Vertical
110 #define H_PRED 2     // Horizontal
111 #define D45_PRED 3   // Directional 45  deg = round(arctan(1/1) * 180/pi)
112 #define D135_PRED 4  // Directional 135 deg = 180 - 45
113 #define D117_PRED 5  // Directional 117 deg = 180 - 63
114 #define D153_PRED 6  // Directional 153 deg = 180 - 27
115 #define D207_PRED 7  // Directional 207 deg = 180 + 27
116 #define D63_PRED 8   // Directional 63  deg = round(arctan(2/1) * 180/pi)
117 #define TM_PRED 9    // True-motion
118 #define NEARESTMV 10
119 #define NEARMV 11
120 #define ZEROMV 12
121 #define NEWMV 13
122 #define MB_MODE_COUNT 14
123 typedef uint8_t PREDICTION_MODE;
124 
125 #define INTRA_MODES (TM_PRED + 1)
126 
127 #define INTER_MODES (1 + NEWMV - NEARESTMV)
128 
129 #define SKIP_CONTEXTS 3
130 #define INTER_MODE_CONTEXTS 7
131 
132 /* Segment Feature Masks */
133 #define MAX_MV_REF_CANDIDATES 2
134 
135 #define INTRA_INTER_CONTEXTS 4
136 #define COMP_INTER_CONTEXTS 5
137 #define REF_CONTEXTS 5
138 
139 #ifdef __cplusplus
140 }  // extern "C"
141 #endif
142 
143 #endif  // VPX_VP9_COMMON_VP9_ENUMS_H_
144