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Ryujinx/Ryujinx.Graphics/VDec/Vp9Decoder.cs
Alex Barney b2b736abc2 Misc cleanup (#708) 
* Fix typos

* Remove unneeded using statements

* Enforce var style more

* Remove redundant qualifiers

* Fix some indentation

* Disable naming warnings on files with external enum names

* Fix build

* Mass find & replace for comments with no spacing

* Standardize todo capitalization and for/if spacing
2019-07-02 04:39:22 +02:00

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38 KiB
C#
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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;
}
}
}
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