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ryujinx/Ryujinx.Audio.Renderer/Dsp/ResamplerHelper.cs

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Amadeus: Final Act (#1481) * Amadeus: Final Act This is my requiem, I present to you Amadeus, a complete reimplementation of the Audio Renderer! This reimplementation is based on my reversing of every version of the audio system module that I carried for the past 10 months. This supports every revision (at the time of writing REV1 to REV8 included) and all features proposed by the Audio Renderer on real hardware. Because this component could be used outside an emulation context, and to avoid possible "inspirations" not crediting the project, I decided to license the Ryujinx.Audio.Renderer project under LGPLv3. - FE3H voices in videos and chapter intro are not present. - Games that use two audio renderer **at the same time** are probably going to have issues right now **until we rewrite the audio output interface** (Crash Team Racing is the only known game to use two renderer at the same time). - Persona 5 Scrambler now goes ingame but audio is garbage. This is caused by the fact that the game engine is syncing audio and video in a really aggressive way. This will disappears the day this game run at full speed. * Make timing more precise when sleeping on Windows Improve precision to a 1ms resolution on Windows NT based OS. This is used to avoid having totally erratic timings and unify all Windows users to the same resolution. NOTE: This is only active when emulation is running.
2020-08-18 01:49:37 +00:00
//
amadeus: Update copyright year Happy new Year
2020-12-31 23:10:44 +00:00
// Copyright (c) 2019-2021 Ryujinx
Amadeus: Final Act (#1481) * Amadeus: Final Act This is my requiem, I present to you Amadeus, a complete reimplementation of the Audio Renderer! This reimplementation is based on my reversing of every version of the audio system module that I carried for the past 10 months. This supports every revision (at the time of writing REV1 to REV8 included) and all features proposed by the Audio Renderer on real hardware. Because this component could be used outside an emulation context, and to avoid possible "inspirations" not crediting the project, I decided to license the Ryujinx.Audio.Renderer project under LGPLv3. - FE3H voices in videos and chapter intro are not present. - Games that use two audio renderer **at the same time** are probably going to have issues right now **until we rewrite the audio output interface** (Crash Team Racing is the only known game to use two renderer at the same time). - Persona 5 Scrambler now goes ingame but audio is garbage. This is caused by the fact that the game engine is syncing audio and video in a really aggressive way. This will disappears the day this game run at full speed. * Make timing more precise when sleeping on Windows Improve precision to a 1ms resolution on Windows NT based OS. This is used to avoid having totally erratic timings and unify all Windows users to the same resolution. NOTE: This is only active when emulation is running.
2020-08-18 01:49:37 +00:00
//
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU Lesser General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU Lesser General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public License
// along with this program. If not, see <https://www.gnu.org/licenses/>.
//
using System;
using System.Linq;
using System.Runtime.CompilerServices;
using System.Runtime.Intrinsics;
using System.Runtime.Intrinsics.X86;
using static Ryujinx.Audio.Renderer.Parameter.VoiceInParameter;
namespace Ryujinx.Audio.Renderer.Dsp
{
public static class ResamplerHelper
{
#region "Default Quality Lookup Tables"
private static short[] _normalCurveLut0 = new short[]
{
6600, 19426, 6722, 3, 6479, 19424, 6845, 9, 6359, 19419, 6968, 15, 6239, 19412, 7093, 22,
6121, 19403, 7219, 28, 6004, 19391, 7345, 34, 5888, 19377, 7472, 41, 5773, 19361, 7600, 48,
5659, 19342, 7728, 55, 5546, 19321, 7857, 62, 5434, 19298, 7987, 69, 5323, 19273, 8118, 77,
5213, 19245, 8249, 84, 5104, 19215, 8381, 92, 4997, 19183, 8513, 101, 4890, 19148, 8646, 109,
4785, 19112, 8780, 118, 4681, 19073, 8914, 127, 4579, 19031, 9048, 137, 4477, 18988, 9183, 147,
4377, 18942, 9318, 157, 4277, 18895, 9454, 168, 4179, 18845, 9590, 179, 4083, 18793, 9726, 190,
3987, 18738, 9863, 202, 3893, 18682, 10000, 215, 3800, 18624, 10137, 228, 3709, 18563, 10274, 241,
3618, 18500, 10411, 255, 3529, 18436, 10549, 270, 3441, 18369, 10687, 285, 3355, 18300, 10824, 300,
3269, 18230, 10962, 317, 3186, 18157, 11100, 334, 3103, 18082, 11238, 351, 3022, 18006, 11375, 369,
2942, 17927, 11513, 388, 2863, 17847, 11650, 408, 2785, 17765, 11788, 428, 2709, 17681, 11925, 449,
2635, 17595, 12062, 471, 2561, 17507, 12198, 494, 2489, 17418, 12334, 517, 2418, 17327, 12470, 541,
2348, 17234, 12606, 566, 2280, 17140, 12741, 592, 2213, 17044, 12876, 619, 2147, 16946, 13010, 647,
2083, 16846, 13144, 675, 2020, 16745, 13277, 704, 1958, 16643, 13409, 735, 1897, 16539, 13541, 766,
1838, 16434, 13673, 798, 1780, 16327, 13803, 832, 1723, 16218, 13933, 866, 1667, 16109, 14062, 901,
1613, 15998, 14191, 937, 1560, 15885, 14318, 975, 1508, 15772, 14445, 1013, 1457, 15657, 14571, 1052,
1407, 15540, 14695, 1093, 1359, 15423, 14819, 1134, 1312, 15304, 14942, 1177, 1266, 15185, 15064, 1221,
1221, 15064, 15185, 1266, 1177, 14942, 15304, 1312, 1134, 14819, 15423, 1359, 1093, 14695, 15540, 1407,
1052, 14571, 15657, 1457, 1013, 14445, 15772, 1508, 975, 14318, 15885, 1560, 937, 14191, 15998, 1613,
901, 14062, 16109, 1667, 866, 13933, 16218, 1723, 832, 13803, 16327, 1780, 798, 13673, 16434, 1838,
766, 13541, 16539, 1897, 735, 13409, 16643, 1958, 704, 13277, 16745, 2020, 675, 13144, 16846, 2083,
647, 13010, 16946, 2147, 619, 12876, 17044, 2213, 592, 12741, 17140, 2280, 566, 12606, 17234, 2348,
541, 12470, 17327, 2418, 517, 12334, 17418, 2489, 494, 12198, 17507, 2561, 471, 12062, 17595, 2635,
449, 11925, 17681, 2709, 428, 11788, 17765, 2785, 408, 11650, 17847, 2863, 388, 11513, 17927, 2942,
369, 11375, 18006, 3022, 351, 11238, 18082, 3103, 334, 11100, 18157, 3186, 317, 10962, 18230, 3269,
300, 10824, 18300, 3355, 285, 10687, 18369, 3441, 270, 10549, 18436, 3529, 255, 10411, 18500, 3618,
241, 10274, 18563, 3709, 228, 10137, 18624, 3800, 215, 10000, 18682, 3893, 202, 9863, 18738, 3987,
190, 9726, 18793, 4083, 179, 9590, 18845, 4179, 168, 9454, 18895, 4277, 157, 9318, 18942, 4377,
147, 9183, 18988, 4477, 137, 9048, 19031, 4579, 127, 8914, 19073, 4681, 118, 8780, 19112, 4785,
109, 8646, 19148, 4890, 101, 8513, 19183, 4997, 92, 8381, 19215, 5104, 84, 8249, 19245, 5213,
77, 8118, 19273, 5323, 69, 7987, 19298, 5434, 62, 7857, 19321, 5546, 55, 7728, 19342, 5659,
48, 7600, 19361, 5773, 41, 7472, 19377, 5888, 34, 7345, 19391, 6004, 28, 7219, 19403, 6121,
22, 7093, 19412, 6239, 15, 6968, 19419, 6359, 9, 6845, 19424, 6479, 3, 6722, 19426, 6600
};
private static short[] _normalCurveLut1 = new short[]
{
-68, 32639, 69, -5, -200, 32630, 212, -15, -328, 32613, 359, -26, -450, 32586, 512, -36,
-568, 32551, 669, -47, -680, 32507, 832, -58, -788, 32454, 1000, -69, -891, 32393, 1174, -80,
-990, 32323, 1352, -92, -1084, 32244, 1536, -103, -1173, 32157, 1724, -115, -1258, 32061, 1919, -128,
-1338, 31956, 2118, -140, -1414, 31844, 2322, -153, -1486, 31723, 2532, -167, -1554, 31593, 2747, -180,
-1617, 31456, 2967, -194, -1676, 31310, 3192, -209, -1732, 31157, 3422, -224, -1783, 30995, 3657, -240,
-1830, 30826, 3897, -256, -1874, 30649, 4143, -272, -1914, 30464, 4393, -289, -1951, 30272, 4648, -307,
-1984, 30072, 4908, -325, -2014, 29866, 5172, -343, -2040, 29652, 5442, -362, -2063, 29431, 5716, -382,
-2083, 29203, 5994, -403, -2100, 28968, 6277, -424, -2114, 28727, 6565, -445, -2125, 28480, 6857, -468,
-2133, 28226, 7153, -490, -2139, 27966, 7453, -514, -2142, 27700, 7758, -538, -2142, 27428, 8066, -563,
-2141, 27151, 8378, -588, -2136, 26867, 8694, -614, -2130, 26579, 9013, -641, -2121, 26285, 9336, -668,
-2111, 25987, 9663, -696, -2098, 25683, 9993, -724, -2084, 25375, 10326, -753, -2067, 25063, 10662, -783,
-2049, 24746, 11000, -813, -2030, 24425, 11342, -844, -2009, 24100, 11686, -875, -1986, 23771, 12033, -907,
-1962, 23438, 12382, -939, -1937, 23103, 12733, -972, -1911, 22764, 13086, -1005, -1883, 22422, 13441, -1039,
-1855, 22077, 13798, -1072, -1825, 21729, 14156, -1107, -1795, 21380, 14516, -1141, -1764, 21027, 14877, -1176,
-1732, 20673, 15239, -1211, -1700, 20317, 15602, -1246, -1667, 19959, 15965, -1282, -1633, 19600, 16329, -1317,
-1599, 19239, 16694, -1353, -1564, 18878, 17058, -1388, -1530, 18515, 17423, -1424, -1495, 18151, 17787, -1459,
-1459, 17787, 18151, -1495, -1424, 17423, 18515, -1530, -1388, 17058, 18878, -1564, -1353, 16694, 19239, -1599,
-1317, 16329, 19600, -1633, -1282, 15965, 19959, -1667, -1246, 15602, 20317, -1700, -1211, 15239, 20673, -1732,
-1176, 14877, 21027, -1764, -1141, 14516, 21380, -1795, -1107, 14156, 21729, -1825, -1072, 13798, 22077, -1855,
-1039, 13441, 22422, -1883, -1005, 13086, 22764, -1911, -972, 12733, 23103, -1937, -939, 12382, 23438, -1962,
-907, 12033, 23771, -1986, -875, 11686, 24100, -2009, -844, 11342, 24425, -2030, -813, 11000, 24746, -2049,
-783, 10662, 25063, -2067, -753, 10326, 25375, -2084, -724, 9993, 25683, -2098, -696, 9663, 25987, -2111,
-668, 9336, 26285, -2121, -641, 9013, 26579, -2130, -614, 8694, 26867, -2136, -588, 8378, 27151, -2141,
-563, 8066, 27428, -2142, -538, 7758, 27700, -2142, -514, 7453, 27966, -2139, -490, 7153, 28226, -2133,
-468, 6857, 28480, -2125, -445, 6565, 28727, -2114, -424, 6277, 28968, -2100, -403, 5994, 29203, -2083,
-382, 5716, 29431, -2063, -362, 5442, 29652, -2040, -343, 5172, 29866, -2014, -325, 4908, 30072, -1984,
-307, 4648, 30272, -1951, -289, 4393, 30464, -1914, -272, 4143, 30649, -1874, -256, 3897, 30826, -1830,
-240, 3657, 30995, -1783, -224, 3422, 31157, -1732, -209, 3192, 31310, -1676, -194, 2967, 31456, -1617,
-180, 2747, 31593, -1554, -167, 2532, 31723, -1486, -153, 2322, 31844, -1414, -140, 2118, 31956, -1338,
-128, 1919, 32061, -1258, -115, 1724, 32157, -1173, -103, 1536, 32244, -1084, -92, 1352, 32323, -990,
-80, 1174, 32393, -891, -69, 1000, 32454, -788, -58, 832, 32507, -680, -47, 669, 32551, -568,
-36, 512, 32586, -450, -26, 359, 32613, -328, -15, 212, 32630, -200, -5, 69, 32639, -68
};
private static short[] _normalCurveLut2 = new short[]
{
3195, 26287, 3329, -32, 3064, 26281, 3467, -34, 2936, 26270, 3608, -38, 2811, 26253, 3751, -42,
2688, 26230, 3897, -46, 2568, 26202, 4046, -50, 2451, 26169, 4199, -54, 2338, 26130, 4354, -58,
2227, 26085, 4512, -63, 2120, 26035, 4673, -67, 2015, 25980, 4837, -72, 1912, 25919, 5004, -76,
1813, 25852, 5174, -81, 1716, 25780, 5347, -87, 1622, 25704, 5522, -92, 1531, 25621, 5701, -98,
1442, 25533, 5882, -103, 1357, 25440, 6066, -109, 1274, 25342, 6253, -115, 1193, 25239, 6442, -121,
1115, 25131, 6635, -127, 1040, 25018, 6830, -133, 967, 24899, 7027, -140, 897, 24776, 7227, -146,
829, 24648, 7430, -153, 764, 24516, 7635, -159, 701, 24379, 7842, -166, 641, 24237, 8052, -174,
583, 24091, 8264, -181, 526, 23940, 8478, -187, 472, 23785, 8695, -194, 420, 23626, 8914, -202,
371, 23462, 9135, -209, 324, 23295, 9358, -215, 279, 23123, 9583, -222, 236, 22948, 9809, -230,
194, 22769, 10038, -237, 154, 22586, 10269, -243, 117, 22399, 10501, -250, 81, 22208, 10735, -258,
47, 22015, 10970, -265, 15, 21818, 11206, -271, -16, 21618, 11444, -277, -44, 21415, 11684, -283,
-71, 21208, 11924, -290, -97, 20999, 12166, -296, -121, 20786, 12409, -302, -143, 20571, 12653, -306,
-163, 20354, 12898, -311, -183, 20134, 13143, -316, -201, 19911, 13389, -321, -218, 19686, 13635, -325,
-234, 19459, 13882, -328, -248, 19230, 14130, -332, -261, 18998, 14377, -335, -273, 18765, 14625, -337,
-284, 18531, 14873, -339, -294, 18295, 15121, -341, -302, 18057, 15369, -341, -310, 17817, 15617, -341,
-317, 17577, 15864, -340, -323, 17335, 16111, -340, -328, 17092, 16357, -338, -332, 16848, 16603, -336,
-336, 16603, 16848, -332, -338, 16357, 17092, -328, -340, 16111, 17335, -323, -340, 15864, 17577, -317,
-341, 15617, 17817, -310, -341, 15369, 18057, -302, -341, 15121, 18295, -294, -339, 14873, 18531, -284,
-337, 14625, 18765, -273, -335, 14377, 18998, -261, -332, 14130, 19230, -248, -328, 13882, 19459, -234,
-325, 13635, 19686, -218, -321, 13389, 19911, -201, -316, 13143, 20134, -183, -311, 12898, 20354, -163,
-306, 12653, 20571, -143, -302, 12409, 20786, -121, -296, 12166, 20999, -97, -290, 11924, 21208, -71,
-283, 11684, 21415, -44, -277, 11444, 21618, -16, -271, 11206, 21818, 15, -265, 10970, 22015, 47,
-258, 10735, 22208, 81, -250, 10501, 22399, 117, -243, 10269, 22586, 154, -237, 10038, 22769, 194,
-230, 9809, 22948, 236, -222, 9583, 23123, 279, -215, 9358, 23295, 324, -209, 9135, 23462, 371,
-202, 8914, 23626, 420, -194, 8695, 23785, 472, -187, 8478, 23940, 526, -181, 8264, 24091, 583,
-174, 8052, 24237, 641, -166, 7842, 24379, 701, -159, 7635, 24516, 764, -153, 7430, 24648, 829,
-146, 7227, 24776, 897, -140, 7027, 24899, 967, -133, 6830, 25018, 1040, -127, 6635, 25131, 1115,
-121, 6442, 25239, 1193, -115, 6253, 25342, 1274, -109, 6066, 25440, 1357, -103, 5882, 25533, 1442,
-98, 5701, 25621, 1531, -92, 5522, 25704, 1622, -87, 5347, 25780, 1716, -81, 5174, 25852, 1813,
-76, 5004, 25919, 1912, -72, 4837, 25980, 2015, -67, 4673, 26035, 2120, -63, 4512, 26085, 2227,
-58, 4354, 26130, 2338, -54, 4199, 26169, 2451, -50, 4046, 26202, 2568, -46, 3897, 26230, 2688,
-42, 3751, 26253, 2811, -38, 3608, 26270, 2936, -34, 3467, 26281, 3064, -32, 3329, 26287, 3195
};
#endregion
#region "High Quality Lookup Tables"
private static short[] _highCurveLut0 = new short[]
{
-582, -23, 8740, 16386, 8833, 8, -590, 0, -573, -54, 8647, 16385, 8925, 40, -598, -1,
-565, -84, 8555, 16383, 9018, 72, -606, -1, -557, -113, 8462, 16379, 9110, 105, -614, -2,
-549, -142, 8370, 16375, 9203, 139, -622, -2, -541, -170, 8277, 16369, 9295, 173, -630, -3,
-533, -198, 8185, 16362, 9387, 208, -638, -4, -525, -225, 8093, 16354, 9480, 244, -646, -5,
-516, -251, 8000, 16344, 9572, 280, -654, -5, -508, -277, 7908, 16334, 9664, 317, -662, -6,
-500, -302, 7816, 16322, 9756, 355, -670, -7, -492, -327, 7724, 16310, 9847, 393, -678, -8,
-484, -351, 7632, 16296, 9939, 432, -686, -9, -476, -374, 7540, 16281, 10030, 471, -694, -10,
-468, -397, 7449, 16265, 10121, 511, -702, -11, -460, -419, 7357, 16247, 10212, 552, -709, -13,
-452, -441, 7266, 16229, 10303, 593, -717, -14, -445, -462, 7175, 16209, 10394, 635, -724, -15,
-437, -483, 7084, 16189, 10484, 678, -732, -16, -429, -503, 6994, 16167, 10574, 722, -739, -18,
-421, -523, 6903, 16144, 10664, 766, -747, -19, -414, -542, 6813, 16120, 10754, 810, -754, -21,
-406, -560, 6723, 16095, 10843, 856, -761, -22, -398, -578, 6633, 16068, 10932, 902, -768, -24,
-391, -596, 6544, 16041, 11021, 949, -775, -26, -383, -612, 6454, 16012, 11109, 996, -782, -27,
-376, -629, 6366, 15983, 11197, 1044, -789, -29, -368, -645, 6277, 15952, 11285, 1093, -796, -31,
-361, -660, 6189, 15920, 11372, 1142, -802, -33, -354, -675, 6100, 15887, 11459, 1192, -809, -35,
-347, -689, 6013, 15853, 11546, 1243, -815, -37, -339, -703, 5925, 15818, 11632, 1294, -821, -39,
-332, -717, 5838, 15782, 11718, 1346, -827, -41, -325, -730, 5751, 15745, 11803, 1399, -833, -43,
-318, -742, 5665, 15707, 11888, 1452, -839, -46, -312, -754, 5579, 15668, 11973, 1506, -845, -48,
-305, -766, 5493, 15627, 12057, 1561, -850, -50, -298, -777, 5408, 15586, 12140, 1616, -855, -53,
-291, -787, 5323, 15544, 12224, 1672, -861, -56, -285, -798, 5239, 15500, 12306, 1729, -866, -58,
-278, -807, 5155, 15456, 12388, 1786, -871, -61, -272, -817, 5071, 15410, 12470, 1844, -875, -64,
-265, -826, 4988, 15364, 12551, 1902, -880, -67, -259, -834, 4905, 15317, 12631, 1962, -884, -70,
-253, -842, 4823, 15268, 12711, 2022, -888, -73, -247, -850, 4741, 15219, 12790, 2082, -892, -76,
-241, -857, 4659, 15168, 12869, 2143, -896, -79, -235, -864, 4578, 15117, 12947, 2205, -899, -82,
-229, -870, 4498, 15065, 13025, 2267, -903, -85, -223, -876, 4417, 15012, 13102, 2331, -906, -89,
-217, -882, 4338, 14958, 13178, 2394, -909, -92, -211, -887, 4259, 14903, 13254, 2459, -911, -96,
-206, -892, 4180, 14847, 13329, 2523, -914, -100, -200, -896, 4102, 14790, 13403, 2589, -916, -103,
-195, -900, 4024, 14732, 13477, 2655, -918, -107, -190, -904, 3947, 14673, 13550, 2722, -919, -111,
-184, -908, 3871, 14614, 13622, 2789, -921, -115, -179, -911, 3795, 14553, 13693, 2857, -922, -119,
-174, -913, 3719, 14492, 13764, 2926, -923, -123, -169, -916, 3644, 14430, 13834, 2995, -923, -127,
-164, -918, 3570, 14367, 13904, 3065, -924, -132, -159, -920, 3496, 14303, 13972, 3136, -924, -136,
-154, -921, 3423, 14239, 14040, 3207, -924, -140, -150, -922, 3350, 14173, 14107, 3278, -923, -145,
-145, -923, 3278, 14107, 14173, 3350, -922, -150, -140, -924, 3207, 14040, 14239, 3423, -921, -154,
-136, -924, 3136, 13972, 14303, 3496, -920, -159, -132, -924, 3065, 13904, 14367, 3570, -918, -164,
-127, -923, 2995, 13834, 14430, 3644, -916, -169, -123, -923, 2926, 13764, 14492, 3719, -913, -174,
-119, -922, 2857, 13693, 14553, 3795, -911, -179, -115, -921, 2789, 13622, 14614, 3871, -908, -184,
-111, -919, 2722, 13550, 14673, 3947, -904, -190, -107, -918, 2655, 13477, 14732, 4024, -900, -195,
-103, -916, 2589, 13403, 14790, 4102, -896, -200, -100, -914, 2523, 13329, 14847, 4180, -892, -206,
-96, -911, 2459, 13254, 14903, 4259, -887, -211, -92, -909, 2394, 13178, 14958, 4338, -882, -217,
-89, -906, 2331, 13102, 15012, 4417, -876, -223, -85, -903, 2267, 13025, 15065, 4498, -870, -229,
-82, -899, 2205, 12947, 15117, 4578, -864, -235, -79, -896, 2143, 12869, 15168, 4659, -857, -241,
-76, -892, 2082, 12790, 15219, 4741, -850, -247, -73, -888, 2022, 12711, 15268, 4823, -842, -253,
-70, -884, 1962, 12631, 15317, 4905, -834, -259, -67, -880, 1902, 12551, 15364, 4988, -826, -265,
-64, -875, 1844, 12470, 15410, 5071, -817, -272, -61, -871, 1786, 12388, 15456, 5155, -807, -278,
-58, -866, 1729, 12306, 15500, 5239, -798, -285, -56, -861, 1672, 12224, 15544, 5323, -787, -291,
-53, -855, 1616, 12140, 15586, 5408, -777, -298, -50, -850, 1561, 12057, 15627, 5493, -766, -305,
-48, -845, 1506, 11973, 15668, 5579, -754, -312, -46, -839, 1452, 11888, 15707, 5665, -742, -318,
-43, -833, 1399, 11803, 15745, 5751, -730, -325, -41, -827, 1346, 11718, 15782, 5838, -717, -332,
-39, -821, 1294, 11632, 15818, 5925, -703, -339, -37, -815, 1243, 11546, 15853, 6013, -689, -347,
-35, -809, 1192, 11459, 15887, 6100, -675, -354, -33, -802, 1142, 11372, 15920, 6189, -660, -361,
-31, -796, 1093, 11285, 15952, 6277, -645, -368, -29, -789, 1044, 11197, 15983, 6366, -629, -376,
-27, -782, 996, 11109, 16012, 6454, -612, -383, -26, -775, 949, 11021, 16041, 6544, -596, -391,
-24, -768, 902, 10932, 16068, 6633, -578, -398, -22, -761, 856, 10843, 16095, 6723, -560, -406,
-21, -754, 810, 10754, 16120, 6813, -542, -414, -19, -747, 766, 10664, 16144, 6903, -523, -421,
-18, -739, 722, 10574, 16167, 6994, -503, -429, -16, -732, 678, 10484, 16189, 7084, -483, -437,
-15, -724, 635, 10394, 16209, 7175, -462, -445, -14, -717, 593, 10303, 16229, 7266, -441, -452,
-13, -709, 552, 10212, 16247, 7357, -419, -460, -11, -702, 511, 10121, 16265, 7449, -397, -468,
-10, -694, 471, 10030, 16281, 7540, -374, -476, -9, -686, 432, 9939, 16296, 7632, -351, -484,
-8, -678, 393, 9847, 16310, 7724, -327, -492, -7, -670, 355, 9756, 16322, 7816, -302, -500,
-6, -662, 317, 9664, 16334, 7908, -277, -508, -5, -654, 280, 9572, 16344, 8000, -251, -516,
-5, -646, 244, 9480, 16354, 8093, -225, -525, -4, -638, 208, 9387, 16362, 8185, -198, -533,
-3, -630, 173, 9295, 16369, 8277, -170, -541, -2, -622, 139, 9203, 16375, 8370, -142, -549,
-2, -614, 105, 9110, 16379, 8462, -113, -557, -1, -606, 72, 9018, 16383, 8555, -84, -565,
-1, -598, 40, 8925, 16385, 8647, -54, -573, 0, -590, 8, 8833, 16386, 8740, -23, -582,
};
private static short[] _highCurveLut1 = new short[]
{
-12, 47, -134, 32767, 81, -16, 2, 0, -26, 108, -345, 32760, 301, -79, 17, -1,
-40, 168, -552, 32745, 526, -144, 32, -2, -53, 226, -753, 32723, 755, -210, 47, -3,
-66, 284, -950, 32694, 989, -277, 63, -5, -78, 340, -1143, 32658, 1226, -346, 79, -6,
-90, 394, -1331, 32615, 1469, -415, 96, -8, -101, 447, -1514, 32564, 1715, -486, 113, -9,
-112, 499, -1692, 32506, 1966, -557, 130, -11, -123, 550, -1865, 32441, 2221, -630, 148, -13,
-133, 599, -2034, 32369, 2480, -703, 166, -14, -143, 646, -2198, 32290, 2743, -778, 185, -16,
-152, 693, -2357, 32204, 3010, -853, 204, -18, -162, 738, -2512, 32110, 3281, -929, 223, -20,
-170, 781, -2662, 32010, 3555, -1007, 242, -23, -178, 823, -2807, 31903, 3834, -1084, 262, -25,
-186, 864, -2947, 31789, 4116, -1163, 282, -27, -194, 903, -3082, 31668, 4403, -1242, 303, -30,
-201, 940, -3213, 31540, 4692, -1322, 323, -32, -207, 977, -3339, 31406, 4985, -1403, 344, -35,
-214, 1011, -3460, 31265, 5282, -1484, 365, -37, -220, 1045, -3577, 31117, 5582, -1566, 387, -40,
-225, 1077, -3688, 30963, 5885, -1648, 409, -43, -230, 1107, -3796, 30802, 6191, -1730, 431, -46,
-235, 1136, -3898, 30635, 6501, -1813, 453, -49, -240, 1164, -3996, 30462, 6813, -1896, 475, -52,
-244, 1190, -4089, 30282, 7128, -1980, 498, -55, -247, 1215, -4178, 30097, 7446, -2064, 520, -58,
-251, 1239, -4262, 29905, 7767, -2148, 543, -62, -254, 1261, -4342, 29707, 8091, -2231, 566, -65,
-257, 1281, -4417, 29503, 8416, -2315, 589, -69, -259, 1301, -4488, 29293, 8745, -2399, 613, -72,
-261, 1319, -4555, 29078, 9075, -2483, 636, -76, -263, 1336, -4617, 28857, 9408, -2567, 659, -80,
-265, 1351, -4674, 28631, 9743, -2651, 683, -83, -266, 1365, -4728, 28399, 10080, -2734, 706, -87,
-267, 1378, -4777, 28161, 10418, -2817, 730, -91, -267, 1389, -4822, 27919, 10759, -2899, 753, -95,
-268, 1400, -4863, 27671, 11100, -2981, 777, -99, -268, 1409, -4900, 27418, 11444, -3063, 800, -103,
-268, 1416, -4933, 27161, 11789, -3144, 824, -107, -267, 1423, -4962, 26898, 12135, -3224, 847, -112,
-267, 1428, -4987, 26631, 12482, -3303, 870, -116, -266, 1433, -5008, 26359, 12830, -3382, 893, -120,
-265, 1436, -5026, 26083, 13179, -3460, 916, -125, -264, 1438, -5039, 25802, 13529, -3537, 939, -129,
-262, 1438, -5049, 25517, 13880, -3613, 962, -133, -260, 1438, -5055, 25228, 14231, -3687, 984, -138,
-258, 1437, -5058, 24935, 14582, -3761, 1006, -142, -256, 1435, -5058, 24639, 14934, -3833, 1028, -147,
-254, 1431, -5053, 24338, 15286, -3904, 1049, -151, -252, 1427, -5046, 24034, 15638, -3974, 1071, -155,
-249, 1422, -5035, 23726, 15989, -4042, 1091, -160, -246, 1416, -5021, 23415, 16341, -4109, 1112, -164,
-243, 1408, -5004, 23101, 16691, -4174, 1132, -169, -240, 1400, -4984, 22783, 17042, -4237, 1152, -173,
-237, 1392, -4960, 22463, 17392, -4299, 1171, -178, -234, 1382, -4934, 22140, 17740, -4358, 1190, -182,
-230, 1371, -4905, 21814, 18088, -4416, 1209, -186, -227, 1360, -4873, 21485, 18435, -4472, 1226, -191,
-223, 1348, -4839, 21154, 18781, -4526, 1244, -195, -219, 1335, -4801, 20821, 19125, -4578, 1260, -199,
-215, 1321, -4761, 20486, 19468, -4627, 1277, -203, -211, 1307, -4719, 20148, 19809, -4674, 1292, -207,
-207, 1292, -4674, 19809, 20148, -4719, 1307, -211, -203, 1277, -4627, 19468, 20486, -4761, 1321, -215,
-199, 1260, -4578, 19125, 20821, -4801, 1335, -219, -195, 1244, -4526, 18781, 21154, -4839, 1348, -223,
-191, 1226, -4472, 18435, 21485, -4873, 1360, -227, -186, 1209, -4416, 18088, 21814, -4905, 1371, -230,
-182, 1190, -4358, 17740, 22140, -4934, 1382, -234, -178, 1171, -4299, 17392, 22463, -4960, 1392, -237,
-173, 1152, -4237, 17042, 22783, -4984, 1400, -240, -169, 1132, -4174, 16691, 23101, -5004, 1408, -243,
-164, 1112, -4109, 16341, 23415, -5021, 1416, -246, -160, 1091, -4042, 15989, 23726, -5035, 1422, -249,
-155, 1071, -3974, 15638, 24034, -5046, 1427, -252, -151, 1049, -3904, 15286, 24338, -5053, 1431, -254,
-147, 1028, -3833, 14934, 24639, -5058, 1435, -256, -142, 1006, -3761, 14582, 24935, -5058, 1437, -258,
-138, 984, -3687, 14231, 25228, -5055, 1438, -260, -133, 962, -3613, 13880, 25517, -5049, 1438, -262,
-129, 939, -3537, 13529, 25802, -5039, 1438, -264, -125, 916, -3460, 13179, 26083, -5026, 1436, -265,
-120, 893, -3382, 12830, 26359, -5008, 1433, -266, -116, 870, -3303, 12482, 26631, -4987, 1428, -267,
-112, 847, -3224, 12135, 26898, -4962, 1423, -267, -107, 824, -3144, 11789, 27161, -4933, 1416, -268,
-103, 800, -3063, 11444, 27418, -4900, 1409, -268, -99, 777, -2981, 11100, 27671, -4863, 1400, -268,
-95, 753, -2899, 10759, 27919, -4822, 1389, -267, -91, 730, -2817, 10418, 28161, -4777, 1378, -267,
-87, 706, -2734, 10080, 28399, -4728, 1365, -266, -83, 683, -2651, 9743, 28631, -4674, 1351, -265,
-80, 659, -2567, 9408, 28857, -4617, 1336, -263, -76, 636, -2483, 9075, 29078, -4555, 1319, -261,
-72, 613, -2399, 8745, 29293, -4488, 1301, -259, -69, 589, -2315, 8416, 29503, -4417, 1281, -257,
-65, 566, -2231, 8091, 29707, -4342, 1261, -254, -62, 543, -2148, 7767, 29905, -4262, 1239, -251,
-58, 520, -2064, 7446, 30097, -4178, 1215, -247, -55, 498, -1980, 7128, 30282, -4089, 1190, -244,
-52, 475, -1896, 6813, 30462, -3996, 1164, -240, -49, 453, -1813, 6501, 30635, -3898, 1136, -235,
-46, 431, -1730, 6191, 30802, -3796, 1107, -230, -43, 409, -1648, 5885, 30963, -3688, 1077, -225,
-40, 387, -1566, 5582, 31117, -3577, 1045, -220, -37, 365, -1484, 5282, 31265, -3460, 1011, -214,
-35, 344, -1403, 4985, 31406, -3339, 977, -207, -32, 323, -1322, 4692, 31540, -3213, 940, -201,
-30, 303, -1242, 4403, 31668, -3082, 903, -194, -27, 282, -1163, 4116, 31789, -2947, 864, -186,
-25, 262, -1084, 3834, 31903, -2807, 823, -178, -23, 242, -1007, 3555, 32010, -2662, 781, -170,
-20, 223, -929, 3281, 32110, -2512, 738, -162, -18, 204, -853, 3010, 32204, -2357, 693, -152,
-16, 185, -778, 2743, 32290, -2198, 646, -143, -14, 166, -703, 2480, 32369, -2034, 599, -133,
-13, 148, -630, 2221, 32441, -1865, 550, -123, -11, 130, -557, 1966, 32506, -1692, 499, -112,
-9, 113, -486, 1715, 32564, -1514, 447, -101, -8, 96, -415, 1469, 32615, -1331, 394, -90,
-6, 79, -346, 1226, 32658, -1143, 340, -78, -5, 63, -277, 989, 32694, -950, 284, -66,
-3, 47, -210, 755, 32723, -753, 226, -53, -2, 32, -144, 526, 32745, -552, 168, -40,
-1, 17, -79, 301, 32760, -345, 108, -26, 0, 2, -16, 81, 32767, -134, 47, -12,
};
private static short[] _highCurveLut2 = new short[]
{
418, -2538, 6118, 24615, 6298, -2563, 417, 0, 420, -2512, 5939, 24611, 6479, -2588, 415, 1,
421, -2485, 5761, 24605, 6662, -2612, 412, 2, 422, -2458, 5585, 24595, 6846, -2635, 409, 3,
423, -2430, 5410, 24582, 7030, -2658, 406, 4, 423, -2402, 5236, 24565, 7216, -2680, 403, 5,
423, -2373, 5064, 24546, 7403, -2701, 399, 6, 423, -2343, 4893, 24523, 7591, -2721, 395, 7,
423, -2313, 4724, 24496, 7780, -2741, 391, 8, 422, -2283, 4556, 24467, 7970, -2759, 386, 9,
421, -2252, 4390, 24434, 8161, -2777, 381, 11, 420, -2221, 4225, 24398, 8353, -2794, 376, 12,
419, -2190, 4062, 24359, 8545, -2810, 370, 14, 418, -2158, 3900, 24316, 8739, -2825, 364, 15,
416, -2126, 3740, 24271, 8933, -2839, 358, 17, 414, -2093, 3582, 24222, 9127, -2851, 351, 19,
412, -2060, 3425, 24170, 9323, -2863, 344, 21, 410, -2027, 3270, 24115, 9519, -2874, 336, 22,
407, -1993, 3117, 24056, 9715, -2884, 328, 24, 404, -1960, 2966, 23995, 9912, -2893, 319, 26,
402, -1926, 2816, 23930, 10110, -2900, 311, 29, 398, -1892, 2668, 23863, 10308, -2907, 301, 31,
395, -1858, 2522, 23792, 10506, -2912, 292, 33, 392, -1823, 2378, 23718, 10705, -2916, 282, 35,
389, -1789, 2235, 23641, 10904, -2919, 271, 38, 385, -1754, 2095, 23561, 11103, -2920, 261, 40,
381, -1719, 1956, 23478, 11303, -2921, 249, 43, 377, -1684, 1819, 23393, 11502, -2920, 238, 45,
373, -1649, 1684, 23304, 11702, -2917, 225, 48, 369, -1615, 1551, 23212, 11902, -2914, 213, 51,
365, -1580, 1420, 23118, 12102, -2909, 200, 54, 361, -1545, 1291, 23020, 12302, -2902, 186, 57,
356, -1510, 1163, 22920, 12502, -2895, 173, 60, 352, -1475, 1038, 22817, 12702, -2885, 158, 63,
347, -1440, 915, 22711, 12901, -2875, 143, 66, 342, -1405, 793, 22602, 13101, -2863, 128, 69,
338, -1370, 674, 22491, 13300, -2849, 113, 73, 333, -1335, 557, 22377, 13499, -2834, 97, 76,
328, -1301, 441, 22260, 13698, -2817, 80, 80, 323, -1266, 328, 22141, 13896, -2799, 63, 83,
318, -1232, 217, 22019, 14094, -2779, 46, 87, 313, -1197, 107, 21894, 14291, -2758, 28, 91,
307, -1163, 0, 21767, 14488, -2735, 9, 95, 302, -1129, -105, 21637, 14684, -2710, -9, 98,
297, -1096, -208, 21506, 14879, -2684, -29, 102, 292, -1062, -310, 21371, 15074, -2656, -48, 106,
286, -1029, -409, 21234, 15268, -2626, -69, 111, 281, -996, -506, 21095, 15461, -2595, -89, 115,
276, -963, -601, 20954, 15654, -2562, -110, 119, 270, -930, -694, 20810, 15846, -2527, -132, 123,
265, -898, -785, 20664, 16036, -2490, -154, 128, 260, -866, -874, 20516, 16226, -2452, -176, 132,
254, -834, -961, 20366, 16415, -2411, -199, 137, 249, -803, -1046, 20213, 16602, -2369, -222, 141,
243, -771, -1129, 20059, 16789, -2326, -246, 146, 238, -740, -1209, 19902, 16974, -2280, -270, 151,
233, -710, -1288, 19744, 17158, -2232, -294, 156, 227, -680, -1365, 19583, 17341, -2183, -319, 160,
222, -650, -1440, 19421, 17523, -2132, -345, 165, 217, -620, -1513, 19257, 17703, -2079, -370, 170,
211, -591, -1583, 19091, 17882, -2023, -396, 175, 206, -562, -1652, 18923, 18059, -1966, -423, 180,
201, -533, -1719, 18754, 18235, -1907, -450, 185, 196, -505, -1784, 18582, 18410, -1847, -477, 191,
191, -477, -1847, 18410, 18582, -1784, -505, 196, 185, -450, -1907, 18235, 18754, -1719, -533, 201,
180, -423, -1966, 18059, 18923, -1652, -562, 206, 175, -396, -2023, 17882, 19091, -1583, -591, 211,
170, -370, -2079, 17703, 19257, -1513, -620, 217, 165, -345, -2132, 17523, 19421, -1440, -650, 222,
160, -319, -2183, 17341, 19583, -1365, -680, 227, 156, -294, -2232, 17158, 19744, -1288, -710, 233,
151, -270, -2280, 16974, 19902, -1209, -740, 238, 146, -246, -2326, 16789, 20059, -1129, -771, 243,
141, -222, -2369, 16602, 20213, -1046, -803, 249, 137, -199, -2411, 16415, 20366, -961, -834, 254,
132, -176, -2452, 16226, 20516, -874, -866, 260, 128, -154, -2490, 16036, 20664, -785, -898, 265,
123, -132, -2527, 15846, 20810, -694, -930, 270, 119, -110, -2562, 15654, 20954, -601, -963, 276,
115, -89, -2595, 15461, 21095, -506, -996, 281, 111, -69, -2626, 15268, 21234, -409, -1029, 286,
106, -48, -2656, 15074, 21371, -310, -1062, 292, 102, -29, -2684, 14879, 21506, -208, -1096, 297,
98, -9, -2710, 14684, 21637, -105, -1129, 302, 95, 9, -2735, 14488, 21767, 0, -1163, 307,
91, 28, -2758, 14291, 21894, 107, -1197, 313, 87, 46, -2779, 14094, 22019, 217, -1232, 318,
83, 63, -2799, 13896, 22141, 328, -1266, 323, 80, 80, -2817, 13698, 22260, 441, -1301, 328,
76, 97, -2834, 13499, 22377, 557, -1335, 333, 73, 113, -2849, 13300, 22491, 674, -1370, 338,
69, 128, -2863, 13101, 22602, 793, -1405, 342, 66, 143, -2875, 12901, 22711, 915, -1440, 347,
63, 158, -2885, 12702, 22817, 1038, -1475, 352, 60, 173, -2895, 12502, 22920, 1163, -1510, 356,
57, 186, -2902, 12302, 23020, 1291, -1545, 361, 54, 200, -2909, 12102, 23118, 1420, -1580, 365,
51, 213, -2914, 11902, 23212, 1551, -1615, 369, 48, 225, -2917, 11702, 23304, 1684, -1649, 373,
45, 238, -2920, 11502, 23393, 1819, -1684, 377, 43, 249, -2921, 11303, 23478, 1956, -1719, 381,
40, 261, -2920, 11103, 23561, 2095, -1754, 385, 38, 271, -2919, 10904, 23641, 2235, -1789, 389,
35, 282, -2916, 10705, 23718, 2378, -1823, 392, 33, 292, -2912, 10506, 23792, 2522, -1858, 395,
31, 301, -2907, 10308, 23863, 2668, -1892, 398, 29, 311, -2900, 10110, 23930, 2816, -1926, 402,
26, 319, -2893, 9912, 23995, 2966, -1960, 404, 24, 328, -2884, 9715, 24056, 3117, -1993, 407,
22, 336, -2874, 9519, 24115, 3270, -2027, 410, 21, 344, -2863, 9323, 24170, 3425, -2060, 412,
19, 351, -2851, 9127, 24222, 3582, -2093, 414, 17, 358, -2839, 8933, 24271, 3740, -2126, 416,
15, 364, -2825, 8739, 24316, 3900, -2158, 418, 14, 370, -2810, 8545, 24359, 4062, -2190, 419,
12, 376, -2794, 8353, 24398, 4225, -2221, 420, 11, 381, -2777, 8161, 24434, 4390, -2252, 421,
9, 386, -2759, 7970, 24467, 4556, -2283, 422, 8, 391, -2741, 7780, 24496, 4724, -2313, 423,
7, 395, -2721, 7591, 24523, 4893, -2343, 423, 6, 399, -2701, 7403, 24546, 5064, -2373, 423,
5, 403, -2680, 7216, 24565, 5236, -2402, 423, 4, 406, -2658, 7030, 24582, 5410, -2430, 423,
3, 409, -2635, 6846, 24595, 5585, -2458, 422, 2, 412, -2612, 6662, 24605, 5761, -2485, 421,
1, 415, -2588, 6479, 24611, 5939, -2512, 420, 0, 417, -2563, 6298, 24615, 6118, -2538, 418,
};
#endregion
private static float[] _normalCurveLut0F;
private static float[] _normalCurveLut1F;
private static float[] _normalCurveLut2F;
private static float[] _highCurveLut0F;
private static float[] _highCurveLut1F;
private static float[] _highCurveLut2F;
static ResamplerHelper()
{
_normalCurveLut0F = _normalCurveLut0.Select(x => x / 32768f).ToArray();
_normalCurveLut1F = _normalCurveLut1.Select(x => x / 32768f).ToArray();
_normalCurveLut2F = _normalCurveLut2.Select(x => x / 32768f).ToArray();
_highCurveLut0F = _highCurveLut0.Select(x => x / 32768f).ToArray();
_highCurveLut1F = _highCurveLut1.Select(x => x / 32768f).ToArray();
_highCurveLut2F = _highCurveLut2.Select(x => x / 32768f).ToArray();
}
private const int FixedPointPrecision = 15;
[MethodImpl(MethodImplOptions.AggressiveInlining)]
public static void Resample(Span<float> outputBuffer, ReadOnlySpan<short> inputBuffer, float ratio, ref float fraction, int sampleCount, SampleRateConversionQuality srcQuality, bool needPitch)
{
switch (srcQuality)
{
case SampleRateConversionQuality.Default:
ResampleDefaultQuality(outputBuffer, inputBuffer, ratio, ref fraction, sampleCount, needPitch);
break;
case SampleRateConversionQuality.Low:
ResampleLowQuality(outputBuffer, inputBuffer, ratio, ref fraction, sampleCount);
break;
case SampleRateConversionQuality.High:
ResampleHighQuality(outputBuffer, inputBuffer, ratio, ref fraction, sampleCount);
break;
default:
throw new NotImplementedException($"{srcQuality}");
}
}
[MethodImpl(MethodImplOptions.AggressiveInlining)]
private static ReadOnlySpan<float> GetDefaultParameter(float ratio)
{
if (ratio <= 1.0f)
{
return _normalCurveLut1F;
}
else if (ratio > 1.333313f)
{
return _normalCurveLut0F;
}
return _normalCurveLut2F;
}
[MethodImpl(MethodImplOptions.AggressiveInlining)]
private unsafe static void ResampleDefaultQuality(Span<float> outputBuffer, ReadOnlySpan<short> inputBuffer, float ratio, ref float fraction, int sampleCount, bool needPitch)
{
ReadOnlySpan<float> parameters = GetDefaultParameter(ratio);
int inputBufferIndex = 0, i = 0;
// TODO: REV8 fast path (when needPitch == false the input index progression is constant + we need SIMD)
if (Sse41.IsSupported)
{
if (ratio == 1f)
{
fixed (short* pInput = inputBuffer)
{
fixed (float* pOutput = outputBuffer, pParameters = parameters)
{
Vector128<float> parameter = Sse.LoadVector128(pParameters);
for (; i < (sampleCount & ~3); i += 4)
{
Vector128<int> intInput0 = Sse41.ConvertToVector128Int32(pInput + (uint)i);
Vector128<int> intInput1 = Sse41.ConvertToVector128Int32(pInput + (uint)i + 1);
Vector128<int> intInput2 = Sse41.ConvertToVector128Int32(pInput + (uint)i + 2);
Vector128<int> intInput3 = Sse41.ConvertToVector128Int32(pInput + (uint)i + 3);
Vector128<float> input0 = Sse2.ConvertToVector128Single(intInput0);
Vector128<float> input1 = Sse2.ConvertToVector128Single(intInput1);
Vector128<float> input2 = Sse2.ConvertToVector128Single(intInput2);
Vector128<float> input3 = Sse2.ConvertToVector128Single(intInput3);
Vector128<float> mix0 = Sse.Multiply(input0, parameter);
Vector128<float> mix1 = Sse.Multiply(input1, parameter);
Vector128<float> mix2 = Sse.Multiply(input2, parameter);
Vector128<float> mix3 = Sse.Multiply(input3, parameter);
Vector128<float> mix01 = Sse3.HorizontalAdd(mix0, mix1);
Vector128<float> mix23 = Sse3.HorizontalAdd(mix2, mix3);
Vector128<float> mix0123 = Sse3.HorizontalAdd(mix01, mix23);
Sse.Store(pOutput + (uint)i, Sse41.RoundToNearestInteger(mix0123));
}
}
}
inputBufferIndex = i;
}
else
{
fixed (short* pInput = inputBuffer)
{
fixed (float* pOutput = outputBuffer, pParameters = parameters)
{
for (; i < (sampleCount & ~3); i += 4)
{
uint baseIndex0 = (uint)(fraction * 128) * 4;
uint inputIndex0 = (uint)inputBufferIndex;
fraction += ratio;
uint baseIndex1 = ((uint)(fraction * 128) & 127) * 4;
uint inputIndex1 = (uint)inputBufferIndex + (uint)fraction;
fraction += ratio;
uint baseIndex2 = ((uint)(fraction * 128) & 127) * 4;
uint inputIndex2 = (uint)inputBufferIndex + (uint)fraction;
fraction += ratio;
uint baseIndex3 = ((uint)(fraction * 128) & 127) * 4;
uint inputIndex3 = (uint)inputBufferIndex + (uint)fraction;
fraction += ratio;
inputBufferIndex += (int)fraction;
// Only keep lower part (safe as fraction isn't supposed to be negative)
fraction -= (int)fraction;
Vector128<float> parameter0 = Sse.LoadVector128(pParameters + baseIndex0);
Vector128<float> parameter1 = Sse.LoadVector128(pParameters + baseIndex1);
Vector128<float> parameter2 = Sse.LoadVector128(pParameters + baseIndex2);
Vector128<float> parameter3 = Sse.LoadVector128(pParameters + baseIndex3);
Vector128<int> intInput0 = Sse41.ConvertToVector128Int32(pInput + inputIndex0);
Vector128<int> intInput1 = Sse41.ConvertToVector128Int32(pInput + inputIndex1);
Vector128<int> intInput2 = Sse41.ConvertToVector128Int32(pInput + inputIndex2);
Vector128<int> intInput3 = Sse41.ConvertToVector128Int32(pInput + inputIndex3);
Vector128<float> input0 = Sse2.ConvertToVector128Single(intInput0);
Vector128<float> input1 = Sse2.ConvertToVector128Single(intInput1);
Vector128<float> input2 = Sse2.ConvertToVector128Single(intInput2);
Vector128<float> input3 = Sse2.ConvertToVector128Single(intInput3);
Vector128<float> mix0 = Sse.Multiply(input0, parameter0);
Vector128<float> mix1 = Sse.Multiply(input1, parameter1);
Vector128<float> mix2 = Sse.Multiply(input2, parameter2);
Vector128<float> mix3 = Sse.Multiply(input3, parameter3);
Vector128<float> mix01 = Sse3.HorizontalAdd(mix0, mix1);
Vector128<float> mix23 = Sse3.HorizontalAdd(mix2, mix3);
Vector128<float> mix0123 = Sse3.HorizontalAdd(mix01, mix23);
Sse.Store(pOutput + (uint)i, Sse41.RoundToNearestInteger(mix0123));
}
}
}
}
}
for (; i < sampleCount; i++)
{
int baseIndex = (int)(fraction * 128) * 4;
ReadOnlySpan<float> parameter = parameters.Slice(baseIndex, 4);
ReadOnlySpan<short> currentInput = inputBuffer.Slice(inputBufferIndex, 4);
outputBuffer[i] = (float)Math.Round(currentInput[0] * parameter[0] +
currentInput[1] * parameter[1] +
currentInput[2] * parameter[2] +
currentInput[3] * parameter[3]);
fraction += ratio;
inputBufferIndex += (int)fraction;
// Only keep lower part (safe as fraction isn't supposed to be negative)
fraction -= (int)fraction;
}
}
[MethodImpl(MethodImplOptions.AggressiveInlining)]
private static ReadOnlySpan<float> GetHighParameter(float ratio)
{
if (ratio <= 1.0f)
{
return _highCurveLut1F;
}
else if (ratio > 1.333313f)
{
return _highCurveLut0F;
}
return _highCurveLut2F;
}
[MethodImpl(MethodImplOptions.AggressiveInlining)]
private static void ResampleHighQuality(Span<float> outputBuffer, ReadOnlySpan<short> inputBuffer, float ratio, ref float fraction, int sampleCount)
{
ReadOnlySpan<float> parameters = GetHighParameter(ratio);
int inputBufferIndex = 0;
// TODO: fast path
for (int i = 0; i < sampleCount; i++)
{
int baseIndex = (int)(fraction * 128) * 8;
ReadOnlySpan<float> parameter = parameters.Slice(baseIndex, 8);
ReadOnlySpan<short> currentInput = inputBuffer.Slice(inputBufferIndex, 8);
outputBuffer[i] = (float)Math.Round(currentInput[0] * parameter[0] +
currentInput[1] * parameter[1] +
currentInput[2] * parameter[2] +
currentInput[3] * parameter[3] +
currentInput[4] * parameter[4] +
currentInput[5] * parameter[5] +
currentInput[6] * parameter[6] +
currentInput[7] * parameter[7]);
fraction += ratio;
inputBufferIndex += (int)MathF.Truncate(fraction);
fraction -= (int)fraction;
}
}
[MethodImpl(MethodImplOptions.AggressiveInlining)]
public static void ResampleLowQuality(Span<float> outputBuffer, ReadOnlySpan<short> inputBuffer, float ratio, ref float fraction, int sampleCount)
{
int inputBufferIndex = 0;
for (int i = 0; i < sampleCount; i++)
{
int outputData = inputBuffer[inputBufferIndex];
if (fraction > 1.0f)
{
outputData = inputBuffer[inputBufferIndex + 1];
}
outputBuffer[i] = outputData;
fraction += ratio;
inputBufferIndex += (int)MathF.Truncate(fraction);
fraction -= (int)fraction;
}
}
[MethodImpl(MethodImplOptions.AggressiveInlining)]
public static void ResampleForUpsampler(Span<float> outputBuffer, ReadOnlySpan<float> inputBuffer, float ratio, ref float fraction, int sampleCount)
{
// TODO: use a bandwidth filter to have better resampling.
int inputBufferIndex = 0;
for (int i = 0; i < sampleCount; i++)
{
float outputData = inputBuffer[inputBufferIndex];
if (fraction > 1.0f)
{
outputData = inputBuffer[inputBufferIndex + 1];
}
outputBuffer[i] = outputData;
fraction += ratio;
inputBufferIndex += (int)MathF.Truncate(fraction);
fraction -= (int)fraction;
}
}
}
}
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