mirror of https://github.com/SixLabors/ImageSharp
Ynse Hoornenborg
3 years ago
16 changed files with 369 additions and 6 deletions
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// Copyright (c) Six Labors.
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// Licensed under the Six Labors Split License.
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namespace SixLabors.ImageSharp.Formats.Heif.Av1; |
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internal enum Av1BitDepth : int |
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{ |
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EightBit = 0, |
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TenBit = 1, |
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TwelveBit = 2, |
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} |
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// Copyright (c) Six Labors.
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// Licensed under the Six Labors Split License.
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using SixLabors.ImageSharp.Formats.Heif.Av1.Prediction; |
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namespace SixLabors.ImageSharp.Formats.Heif.Av1; |
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internal class Av1BlockModeInfo |
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{ |
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public Av1BlockSize BlockSize { get; } |
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public Av1PredictionMode PredictionMode { get; } |
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public Av1PartitionType Partition { get; } |
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} |
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// Copyright (c) Six Labors.
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// Licensed under the Six Labors Split License.
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namespace SixLabors.ImageSharp.Formats.Heif.Av1; |
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internal enum Av1PartitionType |
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{ |
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/// <summary>
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/// Not partitioned any further.
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/// </summary>
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None, |
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/// <summary>
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/// Horizontally split in 2 partitions.
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/// </summary>
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Horizontal, |
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/// <summary>
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/// Vertically split in 2 partitions.
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/// </summary>
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Vertical, |
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/// <summary>
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/// 4 equally sized partitions.
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/// </summary>
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Split, |
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/// <summary>
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/// Horizontal split and the top partition is split again.
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/// </summary>
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HorizontalA, |
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/// <summary>
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/// Horizontal split and the bottom partition is split again.
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/// </summary>
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HorizontalB, |
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/// <summary>
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/// Vertical split and the left partition is split again.
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/// </summary>
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VerticalA, |
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/// <summary>
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/// Vertical split and the right partitino is split again.
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/// </summary>
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VerticalB, |
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/// <summary>
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/// 4:1 horizontal partition.
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/// </summary>
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Horizontal4, |
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/// <summary>
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/// 4:1 vertical partition.
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/// </summary>
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Vertical4, |
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/// <summary>
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/// Invalid value.
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/// </summary>
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Invalid = 255 |
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} |
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// Copyright (c) Six Labors.
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// Licensed under the Six Labors Split License.
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namespace SixLabors.ImageSharp.Formats.Heif.Av1.Prediction; |
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// Inter modes are not defined here, as they do not apply to pictures.
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internal enum Av1PredictionMode |
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{ |
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DC, |
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Vertical, |
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Horizontal, |
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Directional45Degrees, |
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Directional135Degrees, |
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Directional113Degrees, |
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Directional157Degrees, |
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Directional203Degrees, |
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Directional67Degrees, |
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Smooth, |
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SmoothVertical, |
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SmoothHorizontal, |
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Paeth, |
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IntraModeStart = DC, |
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IntraModeEnd = Paeth + 1, |
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IntraModes = Paeth, |
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IntraInvalid = 25, |
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} |
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// Copyright (c) Six Labors.
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// Licensed under the Six Labors Split License.
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using SixLabors.ImageSharp.Formats.Heif.Av1.OpenBitstreamUnit; |
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using SixLabors.ImageSharp.Formats.Heif.Av1.Transform; |
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namespace SixLabors.ImageSharp.Formats.Heif.Av1.Quantization; |
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internal class Av1InverseQuantizer |
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{ |
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public int InverseQuantize(ObuSequenceHeader sequenceHeader, ObuFrameHeader frameHeader, ObuPartitionInfo part, Av1BlockModeInfo mode, int[] qCoefficients, Av1TransformMode txType, Av1TransformSize txSize, Av1Plane plane) |
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{ |
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return 0; |
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} |
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} |
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@ -0,0 +1,152 @@ |
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// Copyright (c) Six Labors.
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// Licensed under the Six Labors Split License.
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namespace SixLabors.ImageSharp.Formats.Heif.Av1.Quantization; |
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internal static class Av1Quantization |
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{ |
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public static readonly int[,] AcQLookup = new int[3, 256] |
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{ |
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{ |
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4, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, |
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26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, |
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45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63, |
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64, 65, 66, 67, 68, 69, 70, 71, 72, 73, 74, 75, 76, 77, 78, 79, 80, 81, 82, |
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83, 84, 85, 86, 87, 88, 89, 90, 91, 92, 93, 94, 95, 96, 97, 98, 99, 100, 101, |
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102, 104, 106, 108, 110, 112, 114, 116, 118, 120, 122, 124, 126, 128, 130, 132, 134, 136, 138, |
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140, 142, 144, 146, 148, 150, 152, 155, 158, 161, 164, 167, 170, 173, 176, 179, 182, 185, 188, |
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191, 194, 197, 200, 203, 207, 211, 215, 219, 223, 227, 231, 235, 239, 243, 247, 251, 255, 260, |
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265, 270, 275, 280, 285, 290, 295, 300, 305, 311, 317, 323, 329, 335, 341, 347, 353, 359, 366, |
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373, 380, 387, 394, 401, 408, 416, 424, 432, 440, 448, 456, 465, 474, 483, 492, 501, 510, 520, |
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530, 540, 550, 560, 571, 582, 593, 604, 615, 627, 639, 651, 663, 676, 689, 702, 715, 729, 743, |
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757, 771, 786, 801, 816, 832, 848, 864, 881, 898, 915, 933, 951, 969, 988, 1007, 1026, 1046, 1066, |
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1087, 1108, 1129, 1151, 1173, 1196, 1219, 1243, 1267, 1292, 1317, 1343, 1369, 1396, 1423, 1451, 1479, 1508, 1537, |
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1567, 1597, 1628, 1660, 1692, 1725, 1759, 1793, 1828, |
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}, |
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{ |
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4, 9, 11, 13, 16, 18, 21, 24, 27, 30, 33, 37, 40, 44, 48, 51, 55, 59, 63, |
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67, 71, 75, 79, 83, 88, 92, 96, 100, 105, 109, 114, 118, 122, 127, 131, 136, 140, 145, |
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149, 154, 158, 163, 168, 172, 177, 181, 186, 190, 195, 199, 204, 208, 213, 217, 222, 226, 231, |
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235, 240, 244, 249, 253, 258, 262, 267, 271, 275, 280, 284, 289, 293, 297, 302, 306, 311, 315, |
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319, 324, 328, 332, 337, 341, 345, 349, 354, 358, 362, 367, 371, 375, 379, 384, 388, 392, 396, |
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401, 409, 417, 425, 433, 441, 449, 458, 466, 474, 482, 490, 498, 506, 514, 523, 531, 539, 547, |
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555, 563, 571, 579, 588, 596, 604, 616, 628, 640, 652, 664, 676, 688, 700, 713, 725, 737, 749, |
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761, 773, 785, 797, 809, 825, 841, 857, 873, 889, 905, 922, 938, 954, 970, 986, 1002, 1018, 1038, |
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1058, 1078, 1098, 1118, 1138, 1158, 1178, 1198, 1218, 1242, 1266, 1290, 1314, 1338, 1362, 1386, 1411, 1435, 1463, |
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1491, 1519, 1547, 1575, 1603, 1631, 1663, 1695, 1727, 1759, 1791, 1823, 1859, 1895, 1931, 1967, 2003, 2039, 2079, |
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2119, 2159, 2199, 2239, 2283, 2327, 2371, 2415, 2459, 2507, 2555, 2603, 2651, 2703, 2755, 2807, 2859, 2915, 2971, |
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3027, 3083, 3143, 3203, 3263, 3327, 3391, 3455, 3523, 3591, 3659, 3731, 3803, 3876, 3952, 4028, 4104, 4184, 4264, |
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4348, 4432, 4516, 4604, 4692, 4784, 4876, 4972, 5068, 5168, 5268, 5372, 5476, 5584, 5692, 5804, 5916, 6032, 6148, |
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6268, 6388, 6512, 6640, 6768, 6900, 7036, 7172, 7312, |
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}, |
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{ |
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4, 13, 19, 27, 35, 44, 54, 64, 75, 87, 99, 112, 126, 139, 154, 168, |
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183, 199, 214, 230, 247, 263, 280, 297, 314, 331, 349, 366, 384, 402, 420, 438, |
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456, 475, 493, 511, 530, 548, 567, 586, 604, 623, 642, 660, 679, 698, 716, 735, |
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753, 772, 791, 809, 828, 846, 865, 884, 902, 920, 939, 957, 976, 994, 1012, 1030, |
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1049, 1067, 1085, 1103, 1121, 1139, 1157, 1175, 1193, 1211, 1229, 1246, 1264, 1282, 1299, 1317, |
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1335, 1352, 1370, 1387, 1405, 1422, 1440, 1457, 1474, 1491, 1509, 1526, 1543, 1560, 1577, 1595, |
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1627, 1660, 1693, 1725, 1758, 1791, 1824, 1856, 1889, 1922, 1954, 1987, 2020, 2052, 2085, 2118, |
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2150, 2183, 2216, 2248, 2281, 2313, 2346, 2378, 2411, 2459, 2508, 2556, 2605, 2653, 2701, 2750, |
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2798, 2847, 2895, 2943, 2992, 3040, 3088, 3137, 3185, 3234, 3298, 3362, 3426, 3491, 3555, 3619, |
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3684, 3748, 3812, 3876, 3941, 4005, 4069, 4149, 4230, 4310, 4390, 4470, 4550, 4631, 4711, 4791, |
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4871, 4967, 5064, 5160, 5256, 5352, 5448, 5544, 5641, 5737, 5849, 5961, 6073, 6185, 6297, 6410, |
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6522, 6650, 6778, 6906, 7034, 7162, 7290, 7435, 7579, 7723, 7867, 8011, 8155, 8315, 8475, 8635, |
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8795, 8956, 9132, 9308, 9484, 9660, 9836, 10028, 10220, 10412, 10604, 10812, 11020, 11228, 11437, 11661, |
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11885, 12109, 12333, 12573, 12813, 13053, 13309, 13565, 13821, 14093, 14365, 14637, 14925, 15213, 15502, 15806, |
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16110, 16414, 16734, 17054, 17390, 17726, 18062, 18414, 18766, 19134, 19502, 19886, 20270, 20670, 21070, 21486, |
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21902, 22334, 22766, 23214, 23662, 24126, 24590, 25070, 25551, 26047, 26559, 27071, 27599, 28143, 28687, 29247, |
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} |
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}; |
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private static readonly int[,] DcQLookup = new int[3, 256] |
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{ |
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{ |
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4, 8, 8, 9, 10, 11, 12, 12, 13, 14, 15, 16, 17, 18, 19, 19, 20, 21, 22, 23, |
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24, 25, 26, 26, 27, 28, 29, 30, 31, 32, 32, 33, 34, 35, 36, 37, 38, 38, 39, 40, |
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41, 42, 43, 43, 44, 45, 46, 47, 48, 48, 49, 50, 51, 52, 53, 53, 54, 55, 56, 57, |
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57, 58, 59, 60, 61, 62, 62, 63, 64, 65, 66, 66, 67, 68, 69, 70, 70, 71, 72, 73, |
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74, 74, 75, 76, 77, 78, 78, 79, 80, 81, 81, 82, 83, 84, 85, 85, 87, 88, 90, 92, |
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93, 95, 96, 98, 99, 101, 102, 104, 105, 107, 108, 110, 111, 113, 114, 116, 117, 118, 120, 121, |
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123, 125, 127, 129, 131, 134, 136, 138, 140, 142, 144, 146, 148, 150, 152, 154, 156, 158, 161, 164, |
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166, 169, 172, 174, 177, 180, 182, 185, 187, 190, 192, 195, 199, 202, 205, 208, 211, 214, 217, 220, |
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223, 226, 230, 233, 237, 240, 243, 247, 250, 253, 257, 261, 265, 269, 272, 276, 280, 284, 288, 292, |
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296, 300, 304, 309, 313, 317, 322, 326, 330, 335, 340, 344, 349, 354, 359, 364, 369, 374, 379, 384, |
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389, 395, 400, 406, 411, 417, 423, 429, 435, 441, 447, 454, 461, 467, 475, 482, 489, 497, 505, 513, |
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522, 530, 539, 549, 559, 569, 579, 590, 602, 614, 626, 640, 654, 668, 684, 700, 717, 736, 755, 775, |
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796, 819, 843, 869, 896, 925, 955, 988, 1022, 1058, 1098, 1139, 1184, 1232, 1282, 1336, |
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}, |
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{ |
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4, 9, 10, 13, 15, 17, 20, 22, 25, 28, 31, 34, 37, 40, 43, 47, 50, 53, 57, |
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60, 64, 68, 71, 75, 78, 82, 86, 90, 93, 97, 101, 105, 109, 113, 116, 120, 124, 128, |
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132, 136, 140, 143, 147, 151, 155, 159, 163, 166, 170, 174, 178, 182, 185, 189, 193, 197, 200, |
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204, 208, 212, 215, 219, 223, 226, 230, 233, 237, 241, 244, 248, 251, 255, 259, 262, 266, 269, |
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273, 276, 280, 283, 287, 290, 293, 297, 300, 304, 307, 310, 314, 317, 321, 324, 327, 331, 334, |
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337, 343, 350, 356, 362, 369, 375, 381, 387, 394, 400, 406, 412, 418, 424, 430, 436, 442, 448, |
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454, 460, 466, 472, 478, 484, 490, 499, 507, 516, 525, 533, 542, 550, 559, 567, 576, 584, 592, |
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601, 609, 617, 625, 634, 644, 655, 666, 676, 687, 698, 708, 718, 729, 739, 749, 759, 770, 782, |
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795, 807, 819, 831, 844, 856, 868, 880, 891, 906, 920, 933, 947, 961, 975, 988, 1001, 1015, 1030, |
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1045, 1061, 1076, 1090, 1105, 1120, 1137, 1153, 1170, 1186, 1202, 1218, 1236, 1253, 1271, 1288, 1306, 1323, 1342, |
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1361, 1379, 1398, 1416, 1436, 1456, 1476, 1496, 1516, 1537, 1559, 1580, 1601, 1624, 1647, 1670, 1692, 1717, 1741, |
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1766, 1791, 1817, 1844, 1871, 1900, 1929, 1958, 1990, 2021, 2054, 2088, 2123, 2159, 2197, 2236, 2276, 2319, 2363, |
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2410, 2458, 2508, 2561, 2616, 2675, 2737, 2802, 2871, 2944, 3020, 3102, 3188, 3280, 3375, 3478, 3586, 3702, 3823, |
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3953, 4089, 4236, 4394, 4559, 4737, 4929, 5130, 5347, |
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}, |
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{ |
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4, 12, 18, 25, 33, 41, 50, 60, 70, 80, 91, 103, 115, 127, 140, 153, |
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166, 180, 194, 208, 222, 237, 251, 266, 281, 296, 312, 327, 343, 358, 374, 390, |
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405, 421, 437, 453, 469, 484, 500, 516, 532, 548, 564, 580, 596, 611, 627, 643, |
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659, 674, 690, 706, 721, 737, 752, 768, 783, 798, 814, 829, 844, 859, 874, 889, |
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904, 919, 934, 949, 964, 978, 993, 1008, 1022, 1037, 1051, 1065, 1080, 1094, 1108, 1122, |
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1136, 1151, 1165, 1179, 1192, 1206, 1220, 1234, 1248, 1261, 1275, 1288, 1302, 1315, 1329, 1342, |
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1368, 1393, 1419, 1444, 1469, 1494, 1519, 1544, 1569, 1594, 1618, 1643, 1668, 1692, 1717, 1741, |
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1765, 1789, 1814, 1838, 1862, 1885, 1909, 1933, 1957, 1992, 2027, 2061, 2096, 2130, 2165, 2199, |
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2233, 2267, 2300, 2334, 2367, 2400, 2434, 2467, 2499, 2532, 2575, 2618, 2661, 2704, 2746, 2788, |
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2830, 2872, 2913, 2954, 2995, 3036, 3076, 3127, 3177, 3226, 3275, 3324, 3373, 3421, 3469, 3517, |
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3565, 3621, 3677, 3733, 3788, 3843, 3897, 3951, 4005, 4058, 4119, 4181, 4241, 4301, 4361, 4420, |
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4479, 4546, 4612, 4677, 4742, 4807, 4871, 4942, 5013, 5083, 5153, 5222, 5291, 5367, 5442, 5517, |
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5591, 5665, 5745, 5825, 5905, 5984, 6063, 6149, 6234, 6319, 6404, 6495, 6587, 6678, 6769, 6867, |
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6966, 7064, 7163, 7269, 7376, 7483, 7599, 7715, 7832, 7958, 8085, 8214, 8352, 8492, 8635, 8788, |
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8945, 9104, 9275, 9450, 9639, 9832, 10031, 10245, 10465, 10702, 10946, 11210, 11482, 11776, 12081, 12409, |
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12750, 13118, 13501, 13913, 14343, 14807, 15290, 15812, 16356, 16943, 17575, 18237, 18949, 19718, 20521, 21387, |
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} |
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}; |
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public static int GetDcQuantization(int qIndex, int delta, Av1BitDepth bitDepth) |
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=> DcQLookup[(int)bitDepth, Av1Math.Clip3(0, 255, qIndex + delta)]; |
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public static int GetAcQuantization(int qIndex, int delta, Av1BitDepth bitDepth) |
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=> AcQLookup[(int)bitDepth, Av1Math.Clip3(0, 255, qIndex + delta)]; |
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public static int GetQzbinFactor(int q, Av1BitDepth bitDepth) |
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{ |
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int quant = GetDcQuantization(q, 0, bitDepth); |
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switch (bitDepth) |
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{ |
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case Av1BitDepth.EightBit: |
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return q == 0 ? 64 : (quant < 148 ? 84 : 80); |
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case Av1BitDepth.TenBit: |
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return q == 0 ? 64 : (quant < 592 ? 84 : 80); |
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case Av1BitDepth.TwelveBit: |
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return q == 0 ? 64 : (quant < 2368 ? 84 : 80); |
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default: |
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DebugGuard.IsTrue(false, "bit_depth should be EIGHT_BIT, TEN_BIT or TWELVE_BIT"); |
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return -1; |
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} |
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} |
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public static void InvertQuantization(out int quantization, out int shift, int d) |
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{ |
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uint t; |
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int l, m; |
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t = (uint)d; |
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for (l = 0; t > 1; l++) |
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{ |
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t >>= 1; |
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} |
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m = 1 + ((1 << (16 + l)) / d); |
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quantization = m - (1 << 16); |
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shift = 1 << (16 - l); |
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} |
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} |
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@ -1,7 +1,7 @@ |
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// Copyright (c) Six Labors.
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// Copyright (c) Six Labors.
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// Licensed under the Six Labors Split License.
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// Licensed under the Six Labors Split License.
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namespace SixLabors.ImageSharp.Formats.Heif.Av1; |
namespace SixLabors.ImageSharp.Formats.Heif.Av1.Transform; |
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internal enum Av1TransformMode : byte |
internal enum Av1TransformMode : byte |
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{ |
{ |
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@ -0,0 +1,49 @@ |
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// Copyright (c) Six Labors.
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// Licensed under the Six Labors Split License.
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namespace SixLabors.ImageSharp.Formats.Heif.Av1.Transform; |
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internal enum Av1TransformType : byte |
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{ |
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/// <summary>
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/// DCT in both horizontal and vertical.
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/// </summary>
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DctDct, |
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/// <summary>
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/// ADST in vertical, DCT in horizontal.
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/// </summary>
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AdstDct, |
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/// <summary>
|
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/// DCT in vertical, ADST in horizontal.
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|
/// </summary>
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DctAdst, |
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|
/// <summary>
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|
/// ADST in both directions.
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|
/// </summary>
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AdstAdst, |
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FlipAdstDct, |
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DctFlipAdst, |
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FlipAdstFlipAdst, |
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AdstFlipAdst, |
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FlipAdstAdst, |
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Identity, |
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VerticalDct, |
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HorizontalDct, |
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VerticalAdst, |
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HorizontalAdst, |
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VerticalFlipAdst, |
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HorizontalFlipAdst, |
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|
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|
/// <summary>
|
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|
/// Number of Transform types.
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|
/// </summary>
|
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|
TransformTypes, |
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|
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|
/// <summary>
|
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|
/// Invalid value.
|
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|
/// </summary>
|
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|
Invalid, |
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|
} |
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Reference in new issue