1  namespace Ryujinx.Graphics.Nvdec.Vp9
 2  {
 3      internal static class Constants
 4      {
 5          public const int Vp9InterpExtend = 4;
 6  
 7          public const int MaxMbPlane = 3;
 8  
 9          public const int None = -1;
10          public const int IntraFrame = 0;
11          public const int LastFrame = 1;
12          public const int GoldenFrame = 2;
13          public const int AltRefFrame = 3;
14          public const int MaxRefFrames = 4;
15  
16          public const int MiSizeLog2 = 3;
17          public const int MiBlockSizeLog2 = 6 - MiSizeLog2; // 64 = 2^6
18  
19          public const int MiSize = 1 << MiSizeLog2; // pixels per mi-unit
20          public const int MiBlockSize = 1 << MiBlockSizeLog2; // mi-units per max block
21          public const int MiMask = MiBlockSize - 1;
22  
23          public const int PartitionPloffset = 4; // number of probability models per block size
24  
25          /* Segment Feature Masks */
26          public const int MaxMvRefCandidates = 2;
27  
28          public const int CompInterContexts = 5;
29          public const int RefContexts = 5;
30  
31          public const int EightTap = 0;
32          public const int EightTapSmooth = 1;
33          public const int EightTapSharp = 2;
34          public const int SwitchableFilters = 3; /* Number of switchable filters */
35          public const int Bilinear = 3;
36          public const int Switchable = 4; /* should be the last one */
37  
38          // Frame
39          public const int RefsPerFrame = 3;
40  
41          public const int NumPingPongBuffers = 2;
42  
43          public const int Class0Bits = 1; /* bits at integer precision for class 0 */
44          public const int Class0Size = 1 << Class0Bits;
45  
46          public const int MvInUseBits = 14;
47          public const int MvUpp = (1 << MvInUseBits) - 1;
48          public const int MvLow = -(1 << MvInUseBits);
49  
50          // Coefficient token alphabet
51          public const int ZeroToken = 0; // 0 Extra Bits 0+0
52          public const int OneToken = 1; // 1 Extra Bits 0+1
53          public const int TwoToken = 2; // 2 Extra Bits 0+1
54  
55          public const int PivotNode = 2;
56  
57          public const int Cat1MinVal = 5;
58          public const int Cat2MinVal = 7;
59          public const int Cat3MinVal = 11;
60          public const int Cat4MinVal = 19;
61          public const int Cat5MinVal = 35;
62          public const int Cat6MinVal = 67;
63  
64          public const int EobModelToken = 3;
65  
66          public const int SegmentAbsData = 1;
67          public const int MaxSegments = 8;
68      }
69  }