using System.Collections.Generic;
using System.IO;
namespace Ryujinx.Graphics.VDec
{
class Vp9Decoder
{
private const int DiffUpdateProbability = 252;
private const int FrameSyncCode = 0x498342;
private static readonly int[] MapLut = new int[]
{
20, 21, 22, 23, 24, 25, 0, 26, 27, 28, 29, 30, 31, 32, 33, 34,
35, 36, 37, 1, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49,
2, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 3, 62, 63,
64, 65, 66, 67, 68, 69, 70, 71, 72, 73, 4, 74, 75, 76, 77, 78,
79, 80, 81, 82, 83, 84, 85, 5, 86, 87, 88, 89, 90, 91, 92, 93,
94, 95, 96, 97, 6, 98, 99, 100, 101, 102, 103, 104, 105, 106, 107, 108,
109, 7, 110, 111, 112, 113, 114, 115, 116, 117, 118, 119, 120, 121, 8, 122,
123, 124, 125, 126, 127, 128, 129, 130, 131, 132, 133, 9, 134, 135, 136, 137,
138, 139, 140, 141, 142, 143, 144, 145, 10, 146, 147, 148, 149, 150, 151, 152,
153, 154, 155, 156, 157, 11, 158, 159, 160, 161, 162, 163, 164, 165, 166, 167,
168, 169, 12, 170, 171, 172, 173, 174, 175, 176, 177, 178, 179, 180, 181, 13,
182, 183, 184, 185, 186, 187, 188, 189, 190, 191, 192, 193, 14, 194, 195, 196,
197, 198, 199, 200, 201, 202, 203, 204, 205, 15, 206, 207, 208, 209, 210, 211,
212, 213, 214, 215, 216, 217, 16, 218, 219, 220, 221, 222, 223, 224, 225, 226,
227, 228, 229, 17, 230, 231, 232, 233, 234, 235, 236, 237, 238, 239, 240, 241,
18, 242, 243, 244, 245, 246, 247, 248, 249, 250, 251, 252, 253, 19
};
private byte[] DefaultTx8x8Probs = new byte[] { 100, 66 };
private byte[] DefaultTx16x16Probs = new byte[] { 20, 152, 15, 101 };
private byte[] DefaultTx32x32Probs = new byte[] { 3, 136, 37, 5, 52, 13 };
private byte[] DefaultCoefProbs = new byte[]
{
195, 29, 183, 0, 84, 49, 136, 0, 8, 42, 71, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 31, 107, 169, 0, 35, 99, 159, 0,
17, 82, 140, 0, 8, 66, 114, 0, 2, 44, 76, 0, 1, 19, 32, 0,
40, 132, 201, 0, 29, 114, 187, 0, 13, 91, 157, 0, 7, 75, 127, 0,
3, 58, 95, 0, 1, 28, 47, 0, 69, 142, 221, 0, 42, 122, 201, 0,
15, 91, 159, 0, 6, 67, 121, 0, 1, 42, 77, 0, 1, 17, 31, 0,
102, 148, 228, 0, 67, 117, 204, 0, 17, 82, 154, 0, 6, 59, 114, 0,
2, 39, 75, 0, 1, 15, 29, 0, 156, 57, 233, 0, 119, 57, 212, 0,
58, 48, 163, 0, 29, 40, 124, 0, 12, 30, 81, 0, 3, 12, 31, 0,
191, 107, 226, 0, 124, 117, 204, 0, 25, 99, 155, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 29, 148, 210, 0, 37, 126, 194, 0,
8, 93, 157, 0, 2, 68, 118, 0, 1, 39, 69, 0, 1, 17, 33, 0,
41, 151, 213, 0, 27, 123, 193, 0, 3, 82, 144, 0, 1, 58, 105, 0,
1, 32, 60, 0, 1, 13, 26, 0, 59, 159, 220, 0, 23, 126, 198, 0,
4, 88, 151, 0, 1, 66, 114, 0, 1, 38, 71, 0, 1, 18, 34, 0,
114, 136, 232, 0, 51, 114, 207, 0, 11, 83, 155, 0, 3, 56, 105, 0,
1, 33, 65, 0, 1, 17, 34, 0, 149, 65, 234, 0, 121, 57, 215, 0,
61, 49, 166, 0, 28, 36, 114, 0, 12, 25, 76, 0, 3, 16, 42, 0,
214, 49, 220, 0, 132, 63, 188, 0, 42, 65, 137, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 85, 137, 221, 0, 104, 131, 216, 0,
49, 111, 192, 0, 21, 87, 155, 0, 2, 49, 87, 0, 1, 16, 28, 0,
89, 163, 230, 0, 90, 137, 220, 0, 29, 100, 183, 0, 10, 70, 135, 0,
2, 42, 81, 0, 1, 17, 33, 0, 108, 167, 237, 0, 55, 133, 222, 0,
15, 97, 179, 0, 4, 72, 135, 0, 1, 45, 85, 0, 1, 19, 38, 0,
124, 146, 240, 0, 66, 124, 224, 0, 17, 88, 175, 0, 4, 58, 122, 0,
1, 36, 75, 0, 1, 18, 37, 0, 141, 79, 241, 0, 126, 70, 227, 0,
66, 58, 182, 0, 30, 44, 136, 0, 12, 34, 96, 0, 2, 20, 47, 0,
229, 99, 249, 0, 143, 111, 235, 0, 46, 109, 192, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 82, 158, 236, 0, 94, 146, 224, 0,
25, 117, 191, 0, 9, 87, 149, 0, 3, 56, 99, 0, 1, 33, 57, 0,
83, 167, 237, 0, 68, 145, 222, 0, 10, 103, 177, 0, 2, 72, 131, 0,
1, 41, 79, 0, 1, 20, 39, 0, 99, 167, 239, 0, 47, 141, 224, 0,
10, 104, 178, 0, 2, 73, 133, 0, 1, 44, 85, 0, 1, 22, 47, 0,
127, 145, 243, 0, 71, 129, 228, 0, 17, 93, 177, 0, 3, 61, 124, 0,
1, 41, 84, 0, 1, 21, 52, 0, 157, 78, 244, 0, 140, 72, 231, 0,
69, 58, 184, 0, 31, 44, 137, 0, 14, 38, 105, 0, 8, 23, 61, 0,
125, 34, 187, 0, 52, 41, 133, 0, 6, 31, 56, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 37, 109, 153, 0, 51, 102, 147, 0,
23, 87, 128, 0, 8, 67, 101, 0, 1, 41, 63, 0, 1, 19, 29, 0,
31, 154, 185, 0, 17, 127, 175, 0, 6, 96, 145, 0, 2, 73, 114, 0,
1, 51, 82, 0, 1, 28, 45, 0, 23, 163, 200, 0, 10, 131, 185, 0,
2, 93, 148, 0, 1, 67, 111, 0, 1, 41, 69, 0, 1, 14, 24, 0,
29, 176, 217, 0, 12, 145, 201, 0, 3, 101, 156, 0, 1, 69, 111, 0,
1, 39, 63, 0, 1, 14, 23, 0, 57, 192, 233, 0, 25, 154, 215, 0,
6, 109, 167, 0, 3, 78, 118, 0, 1, 48, 69, 0, 1, 21, 29, 0,
202, 105, 245, 0, 108, 106, 216, 0, 18, 90, 144, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 33, 172, 219, 0, 64, 149, 206, 0,
14, 117, 177, 0, 5, 90, 141, 0, 2, 61, 95, 0, 1, 37, 57, 0,
33, 179, 220, 0, 11, 140, 198, 0, 1, 89, 148, 0, 1, 60, 104, 0,
1, 33, 57, 0, 1, 12, 21, 0, 30, 181, 221, 0, 8, 141, 198, 0,
1, 87, 145, 0, 1, 58, 100, 0, 1, 31, 55, 0, 1, 12, 20, 0,
32, 186, 224, 0, 7, 142, 198, 0, 1, 86, 143, 0, 1, 58, 100, 0,
1, 31, 55, 0, 1, 12, 22, 0, 57, 192, 227, 0, 20, 143, 204, 0,
3, 96, 154, 0, 1, 68, 112, 0, 1, 42, 69, 0, 1, 19, 32, 0,
212, 35, 215, 0, 113, 47, 169, 0, 29, 48, 105, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 74, 129, 203, 0, 106, 120, 203, 0,
49, 107, 178, 0, 19, 84, 144, 0, 4, 50, 84, 0, 1, 15, 25, 0,
71, 172, 217, 0, 44, 141, 209, 0, 15, 102, 173, 0, 6, 76, 133, 0,
2, 51, 89, 0, 1, 24, 42, 0, 64, 185, 231, 0, 31, 148, 216, 0,
8, 103, 175, 0, 3, 74, 131, 0, 1, 46, 81, 0, 1, 18, 30, 0,
65, 196, 235, 0, 25, 157, 221, 0, 5, 105, 174, 0, 1, 67, 120, 0,
1, 38, 69, 0, 1, 15, 30, 0, 65, 204, 238, 0, 30, 156, 224, 0,
7, 107, 177, 0, 2, 70, 124, 0, 1, 42, 73, 0, 1, 18, 34, 0,
225, 86, 251, 0, 144, 104, 235, 0, 42, 99, 181, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 85, 175, 239, 0, 112, 165, 229, 0,
29, 136, 200, 0, 12, 103, 162, 0, 6, 77, 123, 0, 2, 53, 84, 0,
75, 183, 239, 0, 30, 155, 221, 0, 3, 106, 171, 0, 1, 74, 128, 0,
1, 44, 76, 0, 1, 17, 28, 0, 73, 185, 240, 0, 27, 159, 222, 0,
2, 107, 172, 0, 1, 75, 127, 0, 1, 42, 73, 0, 1, 17, 29, 0,
62, 190, 238, 0, 21, 159, 222, 0, 2, 107, 172, 0, 1, 72, 122, 0,
1, 40, 71, 0, 1, 18, 32, 0, 61, 199, 240, 0, 27, 161, 226, 0,
4, 113, 180, 0, 1, 76, 129, 0, 1, 46, 80, 0, 1, 23, 41, 0,
7, 27, 153, 0, 5, 30, 95, 0, 1, 16, 30, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 50, 75, 127, 0, 57, 75, 124, 0,
27, 67, 108, 0, 10, 54, 86, 0, 1, 33, 52, 0, 1, 12, 18, 0,
43, 125, 151, 0, 26, 108, 148, 0, 7, 83, 122, 0, 2, 59, 89, 0,
1, 38, 60, 0, 1, 17, 27, 0, 23, 144, 163, 0, 13, 112, 154, 0,
2, 75, 117, 0, 1, 50, 81, 0, 1, 31, 51, 0, 1, 14, 23, 0,
18, 162, 185, 0, 6, 123, 171, 0, 1, 78, 125, 0, 1, 51, 86, 0,
1, 31, 54, 0, 1, 14, 23, 0, 15, 199, 227, 0, 3, 150, 204, 0,
1, 91, 146, 0, 1, 55, 95, 0, 1, 30, 53, 0, 1, 11, 20, 0,
19, 55, 240, 0, 19, 59, 196, 0, 3, 52, 105, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 41, 166, 207, 0, 104, 153, 199, 0,
31, 123, 181, 0, 14, 101, 152, 0, 5, 72, 106, 0, 1, 36, 52, 0,
35, 176, 211, 0, 12, 131, 190, 0, 2, 88, 144, 0, 1, 60, 101, 0,
1, 36, 60, 0, 1, 16, 28, 0, 28, 183, 213, 0, 8, 134, 191, 0,
1, 86, 142, 0, 1, 56, 96, 0, 1, 30, 53, 0, 1, 12, 20, 0,
20, 190, 215, 0, 4, 135, 192, 0, 1, 84, 139, 0, 1, 53, 91, 0,
1, 28, 49, 0, 1, 11, 20, 0, 13, 196, 216, 0, 2, 137, 192, 0,
1, 86, 143, 0, 1, 57, 99, 0, 1, 32, 56, 0, 1, 13, 24, 0,
211, 29, 217, 0, 96, 47, 156, 0, 22, 43, 87, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 78, 120, 193, 0, 111, 116, 186, 0,
46, 102, 164, 0, 15, 80, 128, 0, 2, 49, 76, 0, 1, 18, 28, 0,
71, 161, 203, 0, 42, 132, 192, 0, 10, 98, 150, 0, 3, 69, 109, 0,
1, 44, 70, 0, 1, 18, 29, 0, 57, 186, 211, 0, 30, 140, 196, 0,
4, 93, 146, 0, 1, 62, 102, 0, 1, 38, 65, 0, 1, 16, 27, 0,
47, 199, 217, 0, 14, 145, 196, 0, 1, 88, 142, 0, 1, 57, 98, 0,
1, 36, 62, 0, 1, 15, 26, 0, 26, 219, 229, 0, 5, 155, 207, 0,
1, 94, 151, 0, 1, 60, 104, 0, 1, 36, 62, 0, 1, 16, 28, 0,
233, 29, 248, 0, 146, 47, 220, 0, 43, 52, 140, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 100, 163, 232, 0, 179, 161, 222, 0,
63, 142, 204, 0, 37, 113, 174, 0, 26, 89, 137, 0, 18, 68, 97, 0,
85, 181, 230, 0, 32, 146, 209, 0, 7, 100, 164, 0, 3, 71, 121, 0,
1, 45, 77, 0, 1, 18, 30, 0, 65, 187, 230, 0, 20, 148, 207, 0,
2, 97, 159, 0, 1, 68, 116, 0, 1, 40, 70, 0, 1, 14, 29, 0,
40, 194, 227, 0, 8, 147, 204, 0, 1, 94, 155, 0, 1, 65, 112, 0,
1, 39, 66, 0, 1, 14, 26, 0, 16, 208, 228, 0, 3, 151, 207, 0,
1, 98, 160, 0, 1, 67, 117, 0, 1, 41, 74, 0, 1, 17, 31, 0,
17, 38, 140, 0, 7, 34, 80, 0, 1, 17, 29, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 37, 75, 128, 0, 41, 76, 128, 0,
26, 66, 116, 0, 12, 52, 94, 0, 2, 32, 55, 0, 1, 10, 16, 0,
50, 127, 154, 0, 37, 109, 152, 0, 16, 82, 121, 0, 5, 59, 85, 0,
1, 35, 54, 0, 1, 13, 20, 0, 40, 142, 167, 0, 17, 110, 157, 0,
2, 71, 112, 0, 1, 44, 72, 0, 1, 27, 45, 0, 1, 11, 17, 0,
30, 175, 188, 0, 9, 124, 169, 0, 1, 74, 116, 0, 1, 48, 78, 0,
1, 30, 49, 0, 1, 11, 18, 0, 10, 222, 223, 0, 2, 150, 194, 0,
1, 83, 128, 0, 1, 48, 79, 0, 1, 27, 45, 0, 1, 11, 17, 0,
36, 41, 235, 0, 29, 36, 193, 0, 10, 27, 111, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 85, 165, 222, 0, 177, 162, 215, 0,
110, 135, 195, 0, 57, 113, 168, 0, 23, 83, 120, 0, 10, 49, 61, 0,
85, 190, 223, 0, 36, 139, 200, 0, 5, 90, 146, 0, 1, 60, 103, 0,
1, 38, 65, 0, 1, 18, 30, 0, 72, 202, 223, 0, 23, 141, 199, 0,
2, 86, 140, 0, 1, 56, 97, 0, 1, 36, 61, 0, 1, 16, 27, 0,
55, 218, 225, 0, 13, 145, 200, 0, 1, 86, 141, 0, 1, 57, 99, 0,
1, 35, 61, 0, 1, 13, 22, 0, 15, 235, 212, 0, 1, 132, 184, 0,
1, 84, 139, 0, 1, 57, 97, 0, 1, 34, 56, 0, 1, 14, 23, 0,
181, 21, 201, 0, 61, 37, 123, 0, 10, 38, 71, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 47, 106, 172, 0, 95, 104, 173, 0,
42, 93, 159, 0, 18, 77, 131, 0, 4, 50, 81, 0, 1, 17, 23, 0,
62, 147, 199, 0, 44, 130, 189, 0, 28, 102, 154, 0, 18, 75, 115, 0,
2, 44, 65, 0, 1, 12, 19, 0, 55, 153, 210, 0, 24, 130, 194, 0,
3, 93, 146, 0, 1, 61, 97, 0, 1, 31, 50, 0, 1, 10, 16, 0,
49, 186, 223, 0, 17, 148, 204, 0, 1, 96, 142, 0, 1, 53, 83, 0,
1, 26, 44, 0, 1, 11, 17, 0, 13, 217, 212, 0, 2, 136, 180, 0,
1, 78, 124, 0, 1, 50, 83, 0, 1, 29, 49, 0, 1, 14, 23, 0,
197, 13, 247, 0, 82, 17, 222, 0, 25, 17, 162, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 126, 186, 247, 0, 234, 191, 243, 0,
176, 177, 234, 0, 104, 158, 220, 0, 66, 128, 186, 0, 55, 90, 137, 0,
111, 197, 242, 0, 46, 158, 219, 0, 9, 104, 171, 0, 2, 65, 125, 0,
1, 44, 80, 0, 1, 17, 91, 0, 104, 208, 245, 0, 39, 168, 224, 0,
3, 109, 162, 0, 1, 79, 124, 0, 1, 50, 102, 0, 1, 43, 102, 0,
84, 220, 246, 0, 31, 177, 231, 0, 2, 115, 180, 0, 1, 79, 134, 0,
1, 55, 77, 0, 1, 60, 79, 0, 43, 243, 240, 0, 8, 180, 217, 0,
1, 115, 166, 0, 1, 84, 121, 0, 1, 51, 67, 0, 1, 16, 6, 0
};
private byte[] DefaultSkipProbs = new byte[] { 192, 128, 64 };
private byte[] DefaultInterModeProbs = new byte[]
{
2, 173, 34, 0, 7, 145, 85, 0, 7, 166, 63, 0, 7, 94, 66, 0,
8, 64, 46, 0, 17, 81, 31, 0, 25, 29, 30, 0
};
private byte[] DefaultInterpFilterProbs = new byte[]
{
235, 162, 36, 255, 34, 3, 149, 144
};
private byte[] DefaultIsInterProbs = new byte[] { 9, 102, 187, 225 };
private byte[] DefaultCompModeProbs = new byte[] { 239, 183, 119, 96, 41 };
private byte[] DefaultSingleRefProbs = new byte[]
{
33, 16, 77, 74, 142, 142, 172, 170, 238, 247
};
private byte[] DefaultCompRefProbs = new byte[] { 50, 126, 123, 221, 226 };
private byte[] DefaultYModeProbs0 = new byte[]
{
65, 32, 18, 144, 162, 194, 41, 51, 132, 68, 18, 165, 217, 196, 45, 40,
173, 80, 19, 176, 240, 193, 64, 35, 221, 135, 38, 194, 248, 121, 96, 85
};
private byte[] DefaultYModeProbs1 = new byte[] { 98, 78, 46, 29 };
private byte[] DefaultPartitionProbs = new byte[]
{
199, 122, 141, 0, 147, 63, 159, 0, 148, 133, 118, 0, 121, 104, 114, 0,
174, 73, 87, 0, 92, 41, 83, 0, 82, 99, 50, 0, 53, 39, 39, 0,
177, 58, 59, 0, 68, 26, 63, 0, 52, 79, 25, 0, 17, 14, 12, 0,
222, 34, 30, 0, 72, 16, 44, 0, 58, 32, 12, 0, 10, 7, 6, 0
};
private byte[] DefaultMvJointProbs = new byte[] { 32, 64, 96 };
private byte[] DefaultMvSignProbs = new byte[] { 128, 128 };
private byte[] DefaultMvClassProbs = new byte[]
{
224, 144, 192, 168, 192, 176, 192, 198, 198, 245, 216, 128, 176, 160, 176, 176,
192, 198, 198, 208
};
private byte[] DefaultMvClass0BitProbs = new byte[] { 216, 208 };
private byte[] DefaultMvBitsProbs = new byte[]
{
136, 140, 148, 160, 176, 192, 224, 234, 234, 240, 136, 140, 148, 160, 176, 192,
224, 234, 234, 240
};
private byte[] DefaultMvClass0FrProbs = new byte[]
{
128, 128, 64, 96, 112, 64, 128, 128, 64, 96, 112, 64
};
private byte[] DefaultMvFrProbs = new byte[] { 64, 96, 64, 64, 96, 64 };
private byte[] DefaultMvClass0HpProbs = new byte[] { 160, 160 };
private byte[] DefaultMvHpProbs = new byte[] { 128, 128 };
private sbyte[] LoopFilterRefDeltas;
private sbyte[] LoopFilterModeDeltas;
private LinkedList<int> FrameSlotByLastUse;
private Dictionary<long, LinkedListNode<int>> CachedRefFrames;
public Vp9Decoder()
{
LoopFilterRefDeltas = new sbyte[4];
LoopFilterModeDeltas = new sbyte[2];
FrameSlotByLastUse = new LinkedList<int>();
for (int Slot = 0; Slot < 8; Slot++)
{
FrameSlotByLastUse.AddFirst(Slot);
}
CachedRefFrames = new Dictionary<long, LinkedListNode<int>>();
}
public void Decode(
Vp9FrameKeys Keys,
Vp9FrameHeader Header,
Vp9ProbabilityTables Probs,
byte[] FrameData)
{
bool IsKeyFrame = ((Header.Flags >> 0) & 1) != 0;
bool LastIsKeyFrame = ((Header.Flags >> 1) & 1) != 0;
bool FrameSizeChanged = ((Header.Flags >> 2) & 1) != 0;
bool ErrorResilientMode = ((Header.Flags >> 3) & 1) != 0;
bool LastShowFrame = ((Header.Flags >> 4) & 1) != 0;
bool IsFrameIntra = ((Header.Flags >> 5) & 1) != 0;
bool ShowFrame = !IsFrameIntra;
//Write compressed header.
byte[] CompressedHeaderData;
using (MemoryStream CompressedHeader = new MemoryStream())
{
VpxRangeEncoder Writer = new VpxRangeEncoder(CompressedHeader);
if (!Header.Lossless)
{
if ((uint)Header.TxMode >= 3)
{
Writer.Write(3, 2);
Writer.Write(Header.TxMode == 4);
}
else
{
Writer.Write(Header.TxMode, 2);
}
}
if (Header.TxMode == 4)
{
WriteProbabilityUpdate(Writer, Probs.Tx8x8Probs, DefaultTx8x8Probs);
WriteProbabilityUpdate(Writer, Probs.Tx16x16Probs, DefaultTx16x16Probs);
WriteProbabilityUpdate(Writer, Probs.Tx32x32Probs, DefaultTx32x32Probs);
}
WriteCoefProbabilityUpdate(Writer, Header.TxMode, Probs.CoefProbs, DefaultCoefProbs);
WriteProbabilityUpdate(Writer, Probs.SkipProbs, DefaultSkipProbs);
if (!IsFrameIntra)
{
WriteProbabilityUpdateAligned4(Writer, Probs.InterModeProbs, DefaultInterModeProbs);
if (Header.RawInterpolationFilter == 4)
{
WriteProbabilityUpdate(Writer, Probs.InterpFilterProbs, DefaultInterpFilterProbs);
}
WriteProbabilityUpdate(Writer, Probs.IsInterProbs, DefaultIsInterProbs);
if ((Header.RefFrameSignBias[1] & 1) != (Header.RefFrameSignBias[2] & 1) ||
(Header.RefFrameSignBias[1] & 1) != (Header.RefFrameSignBias[3] & 1))
{
if ((uint)Header.CompPredMode >= 1)
{
Writer.Write(1, 1);
Writer.Write(Header.CompPredMode == 2);
}
else
{
Writer.Write(0, 1);
}
}
if (Header.CompPredMode == 2)
{
WriteProbabilityUpdate(Writer, Probs.CompModeProbs, DefaultCompModeProbs);
}
if (Header.CompPredMode != 1)
{
WriteProbabilityUpdate(Writer, Probs.SingleRefProbs, DefaultSingleRefProbs);
}
if (Header.CompPredMode != 0)
{
WriteProbabilityUpdate(Writer, Probs.CompRefProbs, DefaultCompRefProbs);
}
for (int Index = 0; Index < 4; Index++)
{
int i = Index * 8;
int j = Index;
WriteProbabilityUpdate(Writer, Probs.YModeProbs0[i + 0], DefaultYModeProbs0[i + 0]);
WriteProbabilityUpdate(Writer, Probs.YModeProbs0[i + 1], DefaultYModeProbs0[i + 1]);
WriteProbabilityUpdate(Writer, Probs.YModeProbs0[i + 2], DefaultYModeProbs0[i + 2]);
WriteProbabilityUpdate(Writer, Probs.YModeProbs0[i + 3], DefaultYModeProbs0[i + 3]);
WriteProbabilityUpdate(Writer, Probs.YModeProbs0[i + 4], DefaultYModeProbs0[i + 4]);
WriteProbabilityUpdate(Writer, Probs.YModeProbs0[i + 5], DefaultYModeProbs0[i + 5]);
WriteProbabilityUpdate(Writer, Probs.YModeProbs0[i + 6], DefaultYModeProbs0[i + 6]);
WriteProbabilityUpdate(Writer, Probs.YModeProbs0[i + 7], DefaultYModeProbs0[i + 7]);
WriteProbabilityUpdate(Writer, Probs.YModeProbs1[j + 0], DefaultYModeProbs1[j + 0]);
}
WriteProbabilityUpdateAligned4(Writer, Probs.PartitionProbs, DefaultPartitionProbs);
for (int i = 0; i < 3; i++)
{
WriteMvProbabilityUpdate(Writer, Probs.MvJointProbs[i], DefaultMvJointProbs[i]);
}
for (int i = 0; i < 2; i++)
{
WriteMvProbabilityUpdate(Writer, Probs.MvSignProbs[i], DefaultMvSignProbs[i]);
for (int j = 0; j < 10; j++)
{
int Index = i * 10 + j;
WriteMvProbabilityUpdate(Writer, Probs.MvClassProbs[Index], DefaultMvClassProbs[Index]);
}
WriteMvProbabilityUpdate(Writer, Probs.MvClass0BitProbs[i], DefaultMvClass0BitProbs[i]);
for (int j = 0; j < 10; j++)
{
int Index = i * 10 + j;
WriteMvProbabilityUpdate(Writer, Probs.MvBitsProbs[Index], DefaultMvBitsProbs[Index]);
}
}
for (int i = 0; i < 2; i++)
{
for (int j = 0; j < 2; j++)
{
for (int k = 0; k < 3; k++)
{
int Index = i * 2 * 3 + j * 3 + k;
WriteMvProbabilityUpdate(Writer, Probs.MvClass0FrProbs[Index], DefaultMvClass0FrProbs[Index]);
}
}
for (int j = 0; j < 3; j++)
{
int Index = i * 3 + j;
WriteMvProbabilityUpdate(Writer, Probs.MvFrProbs[Index], DefaultMvFrProbs[Index]);
}
}
if (Header.AllowHighPrecisionMv)
{
for (int Index = 0; Index < 2; Index++)
{
WriteMvProbabilityUpdate(Writer, Probs.MvClass0HpProbs[Index], DefaultMvClass0HpProbs[Index]);
WriteMvProbabilityUpdate(Writer, Probs.MvHpProbs[Index], DefaultMvHpProbs[Index]);
}
}
}
Writer.End();
CompressedHeaderData = CompressedHeader.ToArray();
}
//Write uncompressed header.
using (MemoryStream EncodedHeader = new MemoryStream())
{
VpxBitStreamWriter Writer = new VpxBitStreamWriter(EncodedHeader);
Writer.WriteU(2, 2); //Frame marker.
Writer.WriteU(0, 2); //Profile.
Writer.WriteBit(false); //Show existing frame.
Writer.WriteBit(!IsKeyFrame);
Writer.WriteBit(ShowFrame);
Writer.WriteBit(ErrorResilientMode);
if (IsKeyFrame)
{
Writer.WriteU(FrameSyncCode, 24);
Writer.WriteU(0, 3); //Color space.
Writer.WriteU(0, 1); //Color range.
Writer.WriteU(Header.CurrentFrame.Width - 1, 16);
Writer.WriteU(Header.CurrentFrame.Height - 1, 16);
Writer.WriteBit(false); //Render and frame size different.
CachedRefFrames.Clear();
//On key frames, all frame slots are set to the current frame,
//so the value of the selected slot doesn't really matter.
GetNewFrameSlot(Keys.CurrKey);
}
else
{
if (!ShowFrame)
{
Writer.WriteBit(IsFrameIntra);
}
if (!ErrorResilientMode)
{
Writer.WriteU(0, 2); //Reset frame context.
}
int RefreshFrameFlags = 1 << GetNewFrameSlot(Keys.CurrKey);
if (IsFrameIntra)
{
Writer.WriteU(FrameSyncCode, 24);
Writer.WriteU(RefreshFrameFlags, 8);
Writer.WriteU(Header.CurrentFrame.Width - 1, 16);
Writer.WriteU(Header.CurrentFrame.Height - 1, 16);
Writer.WriteBit(false); //Render and frame size different.
}
else
{
Writer.WriteU(RefreshFrameFlags, 8);
int[] RefFrameIndex = new int[]
{
GetFrameSlot(Keys.Ref0Key),
GetFrameSlot(Keys.Ref1Key),
GetFrameSlot(Keys.Ref2Key)
};
byte[] RefFrameSignBias = Header.RefFrameSignBias;
for (int Index = 1; Index < 4; Index++)
{
Writer.WriteU(RefFrameIndex[Index - 1], 3);
Writer.WriteU(RefFrameSignBias[Index], 1);
}
Writer.WriteBit(true); //Frame size with refs.
Writer.WriteBit(false); //Render and frame size different.
Writer.WriteBit(Header.AllowHighPrecisionMv);
Writer.WriteBit(Header.RawInterpolationFilter == 4);
if (Header.RawInterpolationFilter != 4)
{
Writer.WriteU(Header.RawInterpolationFilter, 2);
}
}
}
if (!ErrorResilientMode)
{
Writer.WriteBit(false); //Refresh frame context.
Writer.WriteBit(true); //Frame parallel decoding mode.
}
Writer.WriteU(0, 2); //Frame context index.
Writer.WriteU(Header.LoopFilterLevel, 6);
Writer.WriteU(Header.LoopFilterSharpness, 3);
Writer.WriteBit(Header.LoopFilterDeltaEnabled);
if (Header.LoopFilterDeltaEnabled)
{
bool[] UpdateLoopFilterRefDeltas = new bool[4];
bool[] UpdateLoopFilterModeDeltas = new bool[2];
bool LoopFilterDeltaUpdate = false;
for (int Index = 0; Index < Header.LoopFilterRefDeltas.Length; Index++)
{
sbyte Old = LoopFilterRefDeltas[Index];
sbyte New = Header.LoopFilterRefDeltas[Index];
LoopFilterDeltaUpdate |= (UpdateLoopFilterRefDeltas[Index] = Old != New);
}
for (int Index = 0; Index < Header.LoopFilterModeDeltas.Length; Index++)
{
sbyte Old = LoopFilterModeDeltas[Index];
sbyte New = Header.LoopFilterModeDeltas[Index];
LoopFilterDeltaUpdate |= (UpdateLoopFilterModeDeltas[Index] = Old != New);
}
Writer.WriteBit(LoopFilterDeltaUpdate);
if (LoopFilterDeltaUpdate)
{
for (int Index = 0; Index < Header.LoopFilterRefDeltas.Length; Index++)
{
Writer.WriteBit(UpdateLoopFilterRefDeltas[Index]);
if (UpdateLoopFilterRefDeltas[Index])
{
Writer.WriteS(Header.LoopFilterRefDeltas[Index], 6);
}
}
for (int Index = 0; Index < Header.LoopFilterModeDeltas.Length; Index++)
{
Writer.WriteBit(UpdateLoopFilterModeDeltas[Index]);
if (UpdateLoopFilterModeDeltas[Index])
{
Writer.WriteS(Header.LoopFilterModeDeltas[Index], 6);
}
}
}
}
Writer.WriteU(Header.BaseQIndex, 8);
Writer.WriteDeltaQ(Header.DeltaQYDc);
Writer.WriteDeltaQ(Header.DeltaQUvDc);
Writer.WriteDeltaQ(Header.DeltaQUvAc);
Writer.WriteBit(false); //Segmentation enabled (TODO).
int MinTileColsLog2 = CalcMinLog2TileCols(Header.CurrentFrame.Width);
int MaxTileColsLog2 = CalcMaxLog2TileCols(Header.CurrentFrame.Width);
int TileColsLog2Diff = Header.TileColsLog2 - MinTileColsLog2;
int TileColsLog2IncMask = (1 << TileColsLog2Diff) - 1;
//If it's less than the maximum, we need to add an extra 0 on the bitstream
//to indicate that it should stop reading.
if (Header.TileColsLog2 < MaxTileColsLog2)
{
Writer.WriteU(TileColsLog2IncMask << 1, TileColsLog2Diff + 1);
}
else
{
Writer.WriteU(TileColsLog2IncMask, TileColsLog2Diff);
}
bool TileRowsLog2IsNonZero = Header.TileRowsLog2 != 0;
Writer.WriteBit(TileRowsLog2IsNonZero);
if (TileRowsLog2IsNonZero)
{
Writer.WriteBit(Header.TileRowsLog2 > 1);
}
Writer.WriteU(CompressedHeaderData.Length, 16);
Writer.Flush();
EncodedHeader.Write(CompressedHeaderData, 0, CompressedHeaderData.Length);
if (!FFmpegWrapper.IsInitialized)
{
FFmpegWrapper.Vp9Initialize();
}
FFmpegWrapper.DecodeFrame(DecoderHelper.Combine(EncodedHeader.ToArray(), FrameData));
}
LoopFilterRefDeltas = Header.LoopFilterRefDeltas;
LoopFilterModeDeltas = Header.LoopFilterModeDeltas;
}
private int GetNewFrameSlot(long Key)
{
LinkedListNode<int> Node = FrameSlotByLastUse.Last;
FrameSlotByLastUse.RemoveLast();
FrameSlotByLastUse.AddFirst(Node);
CachedRefFrames[Key] = Node;
return Node.Value;
}
private int GetFrameSlot(long Key)
{
if (CachedRefFrames.TryGetValue(Key, out LinkedListNode<int> Node))
{
FrameSlotByLastUse.Remove(Node);
FrameSlotByLastUse.AddFirst(Node);
return Node.Value;
}
//Reference frame was lost.
//What we should do in this case?
return 0;
}
private void WriteProbabilityUpdate(VpxRangeEncoder Writer, byte[] New, byte[] Old)
{
for (int Offset = 0; Offset < New.Length; Offset++)
{
WriteProbabilityUpdate(Writer, New[Offset], Old[Offset]);
}
}
private void WriteCoefProbabilityUpdate(VpxRangeEncoder Writer, int TxMode, byte[] New, byte[] Old)
{
//Note: There's 1 byte added on each packet for alignment,
//this byte is ignored when doing updates.
const int BlockBytes = 2 * 2 * 6 * 6 * 4;
bool NeedsUpdate(int BaseIndex)
{
int Index = BaseIndex;
for (int i = 0; i < 2; i++)
for (int j = 0; j < 2; j++)
for (int k = 0; k < 6; k++)
for (int l = 0; l < 6; l++)
{
if (New[Index + 0] != Old[Index + 0] ||
New[Index + 1] != Old[Index + 1] ||
New[Index + 2] != Old[Index + 2])
{
return true;
}
Index += 4;
}
return false;
}
for (int BlockIndex = 0; BlockIndex < 4; BlockIndex++)
{
int BaseIndex = BlockIndex * BlockBytes;
bool Update = NeedsUpdate(BaseIndex);
Writer.Write(Update);
if (Update)
{
int Index = BaseIndex;
for (int i = 0; i < 2; i++)
for (int j = 0; j < 2; j++)
for (int k = 0; k < 6; k++)
for (int l = 0; l < 6; l++)
{
if (k != 0 || l < 3)
{
WriteProbabilityUpdate(Writer, New[Index + 0], Old[Index + 0]);
WriteProbabilityUpdate(Writer, New[Index + 1], Old[Index + 1]);
WriteProbabilityUpdate(Writer, New[Index + 2], Old[Index + 2]);
}
Index += 4;
}
}
if (BlockIndex == TxMode)
{
break;
}
}
}
private void WriteProbabilityUpdateAligned4(VpxRangeEncoder Writer, byte[] New, byte[] Old)
{
for (int Offset = 0; Offset < New.Length; Offset += 4)
{
WriteProbabilityUpdate(Writer, New[Offset + 0], Old[Offset + 0]);
WriteProbabilityUpdate(Writer, New[Offset + 1], Old[Offset + 1]);
WriteProbabilityUpdate(Writer, New[Offset + 2], Old[Offset + 2]);
}
}
private void WriteProbabilityUpdate(VpxRangeEncoder Writer, byte New, byte Old)
{
bool Update = New != Old;
Writer.Write(Update, DiffUpdateProbability);
if (Update)
{
WriteProbabilityDelta(Writer, New, Old);
}
}
private void WriteProbabilityDelta(VpxRangeEncoder Writer, int New, int Old)
{
int Delta = RemapProbability(New, Old);
EncodeTermSubExp(Writer, Delta);
}
private int RemapProbability(int New, int Old)
{
New--;
Old--;
int Index;
if (Old * 2 <= 0xff)
{
Index = RecenterNonNeg(New, Old) - 1;
}
else
{
Index = RecenterNonNeg(0xff - 1 - New, 0xff - 1 - Old) - 1;
}
return MapLut[Index];
}
private int RecenterNonNeg(int New, int Old)
{
if (New > Old * 2)
{
return New;
}
else if (New >= Old)
{
return (New - Old) * 2;
}
else /* if (New < Old) */
{
return (Old - New) * 2 - 1;
}
}
private void EncodeTermSubExp(VpxRangeEncoder Writer, int Value)
{
if (WriteLessThan(Writer, Value, 16))
{
Writer.Write(Value, 4);
}
else if (WriteLessThan(Writer, Value, 32))
{
Writer.Write(Value - 16, 4);
}
else if (WriteLessThan(Writer, Value, 64))
{
Writer.Write(Value - 32, 5);
}
else
{
Value -= 64;
const int Size = 8;
int Mask = (1 << Size) - 191;
int Delta = Value - Mask;
if (Delta < 0)
{
Writer.Write(Value, Size - 1);
}
else
{
Writer.Write(Delta / 2 + Mask, Size - 1);
Writer.Write(Delta & 1, 1);
}
}
}
private bool WriteLessThan(VpxRangeEncoder Writer, int Value, int Test)
{
bool IsLessThan = Value < Test;
Writer.Write(!IsLessThan);
return IsLessThan;
}
private void WriteMvProbabilityUpdate(VpxRangeEncoder Writer, byte New, byte Old)
{
bool Update = New != Old;
Writer.Write(Update, DiffUpdateProbability);
if (Update)
{
Writer.Write(New >> 1, 7);
}
}
private static int CalcMinLog2TileCols(int FrameWidth)
{
int Sb64Cols = (FrameWidth + 63) / 64;
int MinLog2 = 0;
while ((64 << MinLog2) < Sb64Cols)
{
MinLog2++;
}
return MinLog2;
}
private static int CalcMaxLog2TileCols(int FrameWidth)
{
int Sb64Cols = (FrameWidth + 63) / 64;
int MaxLog2 = 1;
while ((Sb64Cols >> MaxLog2) >= 4)
{
MaxLog2++;
}
return MaxLog2 - 1;
}
}
}