1 | /* |
2 | * OPL4 MIDI synthesizer functions |
3 | * |
4 | * Copyright (c) 2003 by Clemens Ladisch <clemens@ladisch.de> |
5 | * All rights reserved. |
6 | * |
7 | * Redistribution and use in source and binary forms, with or without |
8 | * modification, are permitted provided that the following conditions |
9 | * are met: |
10 | * 1. Redistributions of source code must retain the above copyright |
11 | * notice, this list of conditions, and the following disclaimer, |
12 | * without modification. |
13 | * 2. The name of the author may not be used to endorse or promote products |
14 | * derived from this software without specific prior written permission. |
15 | * |
16 | * Alternatively, this software may be distributed and/or modified under the |
17 | * terms of the GNU General Public License as published by the Free Software |
18 | * Foundation; either version 2 of the License, or (at your option) any later |
19 | * version. |
20 | * |
21 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND |
22 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
23 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
24 | * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR |
25 | * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
26 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
27 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
28 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
29 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
30 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
31 | * SUCH DAMAGE. |
32 | */ |
33 | |
34 | #include "opl4_local.h" |
35 | #include <linux/delay.h> |
36 | #include <linux/io.h> |
37 | #include <sound/asoundef.h> |
38 | |
39 | /* GM2 controllers */ |
40 | #ifndef MIDI_CTL_RELEASE_TIME |
41 | #define MIDI_CTL_RELEASE_TIME 0x48 |
42 | #define MIDI_CTL_ATTACK_TIME 0x49 |
43 | #define MIDI_CTL_DECAY_TIME 0x4b |
44 | #define MIDI_CTL_VIBRATO_RATE 0x4c |
45 | #define MIDI_CTL_VIBRATO_DEPTH 0x4d |
46 | #define MIDI_CTL_VIBRATO_DELAY 0x4e |
47 | #endif |
48 | |
49 | /* |
50 | * This table maps 100/128 cents to F_NUMBER. |
51 | */ |
52 | static const s16 snd_opl4_pitch_map[0x600] = { |
53 | 0x000,0x000,0x001,0x001,0x002,0x002,0x003,0x003, |
54 | 0x004,0x004,0x005,0x005,0x006,0x006,0x006,0x007, |
55 | 0x007,0x008,0x008,0x009,0x009,0x00a,0x00a,0x00b, |
56 | 0x00b,0x00c,0x00c,0x00d,0x00d,0x00d,0x00e,0x00e, |
57 | 0x00f,0x00f,0x010,0x010,0x011,0x011,0x012,0x012, |
58 | 0x013,0x013,0x014,0x014,0x015,0x015,0x015,0x016, |
59 | 0x016,0x017,0x017,0x018,0x018,0x019,0x019,0x01a, |
60 | 0x01a,0x01b,0x01b,0x01c,0x01c,0x01d,0x01d,0x01e, |
61 | 0x01e,0x01e,0x01f,0x01f,0x020,0x020,0x021,0x021, |
62 | 0x022,0x022,0x023,0x023,0x024,0x024,0x025,0x025, |
63 | 0x026,0x026,0x027,0x027,0x028,0x028,0x029,0x029, |
64 | 0x029,0x02a,0x02a,0x02b,0x02b,0x02c,0x02c,0x02d, |
65 | 0x02d,0x02e,0x02e,0x02f,0x02f,0x030,0x030,0x031, |
66 | 0x031,0x032,0x032,0x033,0x033,0x034,0x034,0x035, |
67 | 0x035,0x036,0x036,0x037,0x037,0x038,0x038,0x038, |
68 | 0x039,0x039,0x03a,0x03a,0x03b,0x03b,0x03c,0x03c, |
69 | 0x03d,0x03d,0x03e,0x03e,0x03f,0x03f,0x040,0x040, |
70 | 0x041,0x041,0x042,0x042,0x043,0x043,0x044,0x044, |
71 | 0x045,0x045,0x046,0x046,0x047,0x047,0x048,0x048, |
72 | 0x049,0x049,0x04a,0x04a,0x04b,0x04b,0x04c,0x04c, |
73 | 0x04d,0x04d,0x04e,0x04e,0x04f,0x04f,0x050,0x050, |
74 | 0x051,0x051,0x052,0x052,0x053,0x053,0x054,0x054, |
75 | 0x055,0x055,0x056,0x056,0x057,0x057,0x058,0x058, |
76 | 0x059,0x059,0x05a,0x05a,0x05b,0x05b,0x05c,0x05c, |
77 | 0x05d,0x05d,0x05e,0x05e,0x05f,0x05f,0x060,0x060, |
78 | 0x061,0x061,0x062,0x062,0x063,0x063,0x064,0x064, |
79 | 0x065,0x065,0x066,0x066,0x067,0x067,0x068,0x068, |
80 | 0x069,0x069,0x06a,0x06a,0x06b,0x06b,0x06c,0x06c, |
81 | 0x06d,0x06d,0x06e,0x06e,0x06f,0x06f,0x070,0x071, |
82 | 0x071,0x072,0x072,0x073,0x073,0x074,0x074,0x075, |
83 | 0x075,0x076,0x076,0x077,0x077,0x078,0x078,0x079, |
84 | 0x079,0x07a,0x07a,0x07b,0x07b,0x07c,0x07c,0x07d, |
85 | 0x07d,0x07e,0x07e,0x07f,0x07f,0x080,0x081,0x081, |
86 | 0x082,0x082,0x083,0x083,0x084,0x084,0x085,0x085, |
87 | 0x086,0x086,0x087,0x087,0x088,0x088,0x089,0x089, |
88 | 0x08a,0x08a,0x08b,0x08b,0x08c,0x08d,0x08d,0x08e, |
89 | 0x08e,0x08f,0x08f,0x090,0x090,0x091,0x091,0x092, |
90 | 0x092,0x093,0x093,0x094,0x094,0x095,0x096,0x096, |
91 | 0x097,0x097,0x098,0x098,0x099,0x099,0x09a,0x09a, |
92 | 0x09b,0x09b,0x09c,0x09c,0x09d,0x09d,0x09e,0x09f, |
93 | 0x09f,0x0a0,0x0a0,0x0a1,0x0a1,0x0a2,0x0a2,0x0a3, |
94 | 0x0a3,0x0a4,0x0a4,0x0a5,0x0a6,0x0a6,0x0a7,0x0a7, |
95 | 0x0a8,0x0a8,0x0a9,0x0a9,0x0aa,0x0aa,0x0ab,0x0ab, |
96 | 0x0ac,0x0ad,0x0ad,0x0ae,0x0ae,0x0af,0x0af,0x0b0, |
97 | 0x0b0,0x0b1,0x0b1,0x0b2,0x0b2,0x0b3,0x0b4,0x0b4, |
98 | 0x0b5,0x0b5,0x0b6,0x0b6,0x0b7,0x0b7,0x0b8,0x0b8, |
99 | 0x0b9,0x0ba,0x0ba,0x0bb,0x0bb,0x0bc,0x0bc,0x0bd, |
100 | 0x0bd,0x0be,0x0be,0x0bf,0x0c0,0x0c0,0x0c1,0x0c1, |
101 | 0x0c2,0x0c2,0x0c3,0x0c3,0x0c4,0x0c4,0x0c5,0x0c6, |
102 | 0x0c6,0x0c7,0x0c7,0x0c8,0x0c8,0x0c9,0x0c9,0x0ca, |
103 | 0x0cb,0x0cb,0x0cc,0x0cc,0x0cd,0x0cd,0x0ce,0x0ce, |
104 | 0x0cf,0x0d0,0x0d0,0x0d1,0x0d1,0x0d2,0x0d2,0x0d3, |
105 | 0x0d3,0x0d4,0x0d5,0x0d5,0x0d6,0x0d6,0x0d7,0x0d7, |
106 | 0x0d8,0x0d8,0x0d9,0x0da,0x0da,0x0db,0x0db,0x0dc, |
107 | 0x0dc,0x0dd,0x0de,0x0de,0x0df,0x0df,0x0e0,0x0e0, |
108 | 0x0e1,0x0e1,0x0e2,0x0e3,0x0e3,0x0e4,0x0e4,0x0e5, |
109 | 0x0e5,0x0e6,0x0e7,0x0e7,0x0e8,0x0e8,0x0e9,0x0e9, |
110 | 0x0ea,0x0eb,0x0eb,0x0ec,0x0ec,0x0ed,0x0ed,0x0ee, |
111 | 0x0ef,0x0ef,0x0f0,0x0f0,0x0f1,0x0f1,0x0f2,0x0f3, |
112 | 0x0f3,0x0f4,0x0f4,0x0f5,0x0f5,0x0f6,0x0f7,0x0f7, |
113 | 0x0f8,0x0f8,0x0f9,0x0f9,0x0fa,0x0fb,0x0fb,0x0fc, |
114 | 0x0fc,0x0fd,0x0fd,0x0fe,0x0ff,0x0ff,0x100,0x100, |
115 | 0x101,0x101,0x102,0x103,0x103,0x104,0x104,0x105, |
116 | 0x106,0x106,0x107,0x107,0x108,0x108,0x109,0x10a, |
117 | 0x10a,0x10b,0x10b,0x10c,0x10c,0x10d,0x10e,0x10e, |
118 | 0x10f,0x10f,0x110,0x111,0x111,0x112,0x112,0x113, |
119 | 0x114,0x114,0x115,0x115,0x116,0x116,0x117,0x118, |
120 | 0x118,0x119,0x119,0x11a,0x11b,0x11b,0x11c,0x11c, |
121 | 0x11d,0x11e,0x11e,0x11f,0x11f,0x120,0x120,0x121, |
122 | 0x122,0x122,0x123,0x123,0x124,0x125,0x125,0x126, |
123 | 0x126,0x127,0x128,0x128,0x129,0x129,0x12a,0x12b, |
124 | 0x12b,0x12c,0x12c,0x12d,0x12e,0x12e,0x12f,0x12f, |
125 | 0x130,0x131,0x131,0x132,0x132,0x133,0x134,0x134, |
126 | 0x135,0x135,0x136,0x137,0x137,0x138,0x138,0x139, |
127 | 0x13a,0x13a,0x13b,0x13b,0x13c,0x13d,0x13d,0x13e, |
128 | 0x13e,0x13f,0x140,0x140,0x141,0x141,0x142,0x143, |
129 | 0x143,0x144,0x144,0x145,0x146,0x146,0x147,0x148, |
130 | 0x148,0x149,0x149,0x14a,0x14b,0x14b,0x14c,0x14c, |
131 | 0x14d,0x14e,0x14e,0x14f,0x14f,0x150,0x151,0x151, |
132 | 0x152,0x153,0x153,0x154,0x154,0x155,0x156,0x156, |
133 | 0x157,0x157,0x158,0x159,0x159,0x15a,0x15b,0x15b, |
134 | 0x15c,0x15c,0x15d,0x15e,0x15e,0x15f,0x160,0x160, |
135 | 0x161,0x161,0x162,0x163,0x163,0x164,0x165,0x165, |
136 | 0x166,0x166,0x167,0x168,0x168,0x169,0x16a,0x16a, |
137 | 0x16b,0x16b,0x16c,0x16d,0x16d,0x16e,0x16f,0x16f, |
138 | 0x170,0x170,0x171,0x172,0x172,0x173,0x174,0x174, |
139 | 0x175,0x175,0x176,0x177,0x177,0x178,0x179,0x179, |
140 | 0x17a,0x17a,0x17b,0x17c,0x17c,0x17d,0x17e,0x17e, |
141 | 0x17f,0x180,0x180,0x181,0x181,0x182,0x183,0x183, |
142 | 0x184,0x185,0x185,0x186,0x187,0x187,0x188,0x188, |
143 | 0x189,0x18a,0x18a,0x18b,0x18c,0x18c,0x18d,0x18e, |
144 | 0x18e,0x18f,0x190,0x190,0x191,0x191,0x192,0x193, |
145 | 0x193,0x194,0x195,0x195,0x196,0x197,0x197,0x198, |
146 | 0x199,0x199,0x19a,0x19a,0x19b,0x19c,0x19c,0x19d, |
147 | 0x19e,0x19e,0x19f,0x1a0,0x1a0,0x1a1,0x1a2,0x1a2, |
148 | 0x1a3,0x1a4,0x1a4,0x1a5,0x1a6,0x1a6,0x1a7,0x1a8, |
149 | 0x1a8,0x1a9,0x1a9,0x1aa,0x1ab,0x1ab,0x1ac,0x1ad, |
150 | 0x1ad,0x1ae,0x1af,0x1af,0x1b0,0x1b1,0x1b1,0x1b2, |
151 | 0x1b3,0x1b3,0x1b4,0x1b5,0x1b5,0x1b6,0x1b7,0x1b7, |
152 | 0x1b8,0x1b9,0x1b9,0x1ba,0x1bb,0x1bb,0x1bc,0x1bd, |
153 | 0x1bd,0x1be,0x1bf,0x1bf,0x1c0,0x1c1,0x1c1,0x1c2, |
154 | 0x1c3,0x1c3,0x1c4,0x1c5,0x1c5,0x1c6,0x1c7,0x1c7, |
155 | 0x1c8,0x1c9,0x1c9,0x1ca,0x1cb,0x1cb,0x1cc,0x1cd, |
156 | 0x1cd,0x1ce,0x1cf,0x1cf,0x1d0,0x1d1,0x1d1,0x1d2, |
157 | 0x1d3,0x1d3,0x1d4,0x1d5,0x1d5,0x1d6,0x1d7,0x1d7, |
158 | 0x1d8,0x1d9,0x1d9,0x1da,0x1db,0x1db,0x1dc,0x1dd, |
159 | 0x1dd,0x1de,0x1df,0x1df,0x1e0,0x1e1,0x1e1,0x1e2, |
160 | 0x1e3,0x1e4,0x1e4,0x1e5,0x1e6,0x1e6,0x1e7,0x1e8, |
161 | 0x1e8,0x1e9,0x1ea,0x1ea,0x1eb,0x1ec,0x1ec,0x1ed, |
162 | 0x1ee,0x1ee,0x1ef,0x1f0,0x1f0,0x1f1,0x1f2,0x1f3, |
163 | 0x1f3,0x1f4,0x1f5,0x1f5,0x1f6,0x1f7,0x1f7,0x1f8, |
164 | 0x1f9,0x1f9,0x1fa,0x1fb,0x1fb,0x1fc,0x1fd,0x1fe, |
165 | 0x1fe,0x1ff,0x200,0x200,0x201,0x202,0x202,0x203, |
166 | 0x204,0x205,0x205,0x206,0x207,0x207,0x208,0x209, |
167 | 0x209,0x20a,0x20b,0x20b,0x20c,0x20d,0x20e,0x20e, |
168 | 0x20f,0x210,0x210,0x211,0x212,0x212,0x213,0x214, |
169 | 0x215,0x215,0x216,0x217,0x217,0x218,0x219,0x21a, |
170 | 0x21a,0x21b,0x21c,0x21c,0x21d,0x21e,0x21e,0x21f, |
171 | 0x220,0x221,0x221,0x222,0x223,0x223,0x224,0x225, |
172 | 0x226,0x226,0x227,0x228,0x228,0x229,0x22a,0x22b, |
173 | 0x22b,0x22c,0x22d,0x22d,0x22e,0x22f,0x230,0x230, |
174 | 0x231,0x232,0x232,0x233,0x234,0x235,0x235,0x236, |
175 | 0x237,0x237,0x238,0x239,0x23a,0x23a,0x23b,0x23c, |
176 | 0x23c,0x23d,0x23e,0x23f,0x23f,0x240,0x241,0x241, |
177 | 0x242,0x243,0x244,0x244,0x245,0x246,0x247,0x247, |
178 | 0x248,0x249,0x249,0x24a,0x24b,0x24c,0x24c,0x24d, |
179 | 0x24e,0x24f,0x24f,0x250,0x251,0x251,0x252,0x253, |
180 | 0x254,0x254,0x255,0x256,0x257,0x257,0x258,0x259, |
181 | 0x259,0x25a,0x25b,0x25c,0x25c,0x25d,0x25e,0x25f, |
182 | 0x25f,0x260,0x261,0x262,0x262,0x263,0x264,0x265, |
183 | 0x265,0x266,0x267,0x267,0x268,0x269,0x26a,0x26a, |
184 | 0x26b,0x26c,0x26d,0x26d,0x26e,0x26f,0x270,0x270, |
185 | 0x271,0x272,0x273,0x273,0x274,0x275,0x276,0x276, |
186 | 0x277,0x278,0x279,0x279,0x27a,0x27b,0x27c,0x27c, |
187 | 0x27d,0x27e,0x27f,0x27f,0x280,0x281,0x282,0x282, |
188 | 0x283,0x284,0x285,0x285,0x286,0x287,0x288,0x288, |
189 | 0x289,0x28a,0x28b,0x28b,0x28c,0x28d,0x28e,0x28e, |
190 | 0x28f,0x290,0x291,0x291,0x292,0x293,0x294,0x294, |
191 | 0x295,0x296,0x297,0x298,0x298,0x299,0x29a,0x29b, |
192 | 0x29b,0x29c,0x29d,0x29e,0x29e,0x29f,0x2a0,0x2a1, |
193 | 0x2a1,0x2a2,0x2a3,0x2a4,0x2a5,0x2a5,0x2a6,0x2a7, |
194 | 0x2a8,0x2a8,0x2a9,0x2aa,0x2ab,0x2ab,0x2ac,0x2ad, |
195 | 0x2ae,0x2af,0x2af,0x2b0,0x2b1,0x2b2,0x2b2,0x2b3, |
196 | 0x2b4,0x2b5,0x2b5,0x2b6,0x2b7,0x2b8,0x2b9,0x2b9, |
197 | 0x2ba,0x2bb,0x2bc,0x2bc,0x2bd,0x2be,0x2bf,0x2c0, |
198 | 0x2c0,0x2c1,0x2c2,0x2c3,0x2c4,0x2c4,0x2c5,0x2c6, |
199 | 0x2c7,0x2c7,0x2c8,0x2c9,0x2ca,0x2cb,0x2cb,0x2cc, |
200 | 0x2cd,0x2ce,0x2ce,0x2cf,0x2d0,0x2d1,0x2d2,0x2d2, |
201 | 0x2d3,0x2d4,0x2d5,0x2d6,0x2d6,0x2d7,0x2d8,0x2d9, |
202 | 0x2da,0x2da,0x2db,0x2dc,0x2dd,0x2dd,0x2de,0x2df, |
203 | 0x2e0,0x2e1,0x2e1,0x2e2,0x2e3,0x2e4,0x2e5,0x2e5, |
204 | 0x2e6,0x2e7,0x2e8,0x2e9,0x2e9,0x2ea,0x2eb,0x2ec, |
205 | 0x2ed,0x2ed,0x2ee,0x2ef,0x2f0,0x2f1,0x2f1,0x2f2, |
206 | 0x2f3,0x2f4,0x2f5,0x2f5,0x2f6,0x2f7,0x2f8,0x2f9, |
207 | 0x2f9,0x2fa,0x2fb,0x2fc,0x2fd,0x2fd,0x2fe,0x2ff, |
208 | 0x300,0x301,0x302,0x302,0x303,0x304,0x305,0x306, |
209 | 0x306,0x307,0x308,0x309,0x30a,0x30a,0x30b,0x30c, |
210 | 0x30d,0x30e,0x30f,0x30f,0x310,0x311,0x312,0x313, |
211 | 0x313,0x314,0x315,0x316,0x317,0x318,0x318,0x319, |
212 | 0x31a,0x31b,0x31c,0x31c,0x31d,0x31e,0x31f,0x320, |
213 | 0x321,0x321,0x322,0x323,0x324,0x325,0x326,0x326, |
214 | 0x327,0x328,0x329,0x32a,0x32a,0x32b,0x32c,0x32d, |
215 | 0x32e,0x32f,0x32f,0x330,0x331,0x332,0x333,0x334, |
216 | 0x334,0x335,0x336,0x337,0x338,0x339,0x339,0x33a, |
217 | 0x33b,0x33c,0x33d,0x33e,0x33e,0x33f,0x340,0x341, |
218 | 0x342,0x343,0x343,0x344,0x345,0x346,0x347,0x348, |
219 | 0x349,0x349,0x34a,0x34b,0x34c,0x34d,0x34e,0x34e, |
220 | 0x34f,0x350,0x351,0x352,0x353,0x353,0x354,0x355, |
221 | 0x356,0x357,0x358,0x359,0x359,0x35a,0x35b,0x35c, |
222 | 0x35d,0x35e,0x35f,0x35f,0x360,0x361,0x362,0x363, |
223 | 0x364,0x364,0x365,0x366,0x367,0x368,0x369,0x36a, |
224 | 0x36a,0x36b,0x36c,0x36d,0x36e,0x36f,0x370,0x370, |
225 | 0x371,0x372,0x373,0x374,0x375,0x376,0x377,0x377, |
226 | 0x378,0x379,0x37a,0x37b,0x37c,0x37d,0x37d,0x37e, |
227 | 0x37f,0x380,0x381,0x382,0x383,0x383,0x384,0x385, |
228 | 0x386,0x387,0x388,0x389,0x38a,0x38a,0x38b,0x38c, |
229 | 0x38d,0x38e,0x38f,0x390,0x391,0x391,0x392,0x393, |
230 | 0x394,0x395,0x396,0x397,0x398,0x398,0x399,0x39a, |
231 | 0x39b,0x39c,0x39d,0x39e,0x39f,0x39f,0x3a0,0x3a1, |
232 | 0x3a2,0x3a3,0x3a4,0x3a5,0x3a6,0x3a7,0x3a7,0x3a8, |
233 | 0x3a9,0x3aa,0x3ab,0x3ac,0x3ad,0x3ae,0x3ae,0x3af, |
234 | 0x3b0,0x3b1,0x3b2,0x3b3,0x3b4,0x3b5,0x3b6,0x3b6, |
235 | 0x3b7,0x3b8,0x3b9,0x3ba,0x3bb,0x3bc,0x3bd,0x3be, |
236 | 0x3bf,0x3bf,0x3c0,0x3c1,0x3c2,0x3c3,0x3c4,0x3c5, |
237 | 0x3c6,0x3c7,0x3c7,0x3c8,0x3c9,0x3ca,0x3cb,0x3cc, |
238 | 0x3cd,0x3ce,0x3cf,0x3d0,0x3d1,0x3d1,0x3d2,0x3d3, |
239 | 0x3d4,0x3d5,0x3d6,0x3d7,0x3d8,0x3d9,0x3da,0x3da, |
240 | 0x3db,0x3dc,0x3dd,0x3de,0x3df,0x3e0,0x3e1,0x3e2, |
241 | 0x3e3,0x3e4,0x3e4,0x3e5,0x3e6,0x3e7,0x3e8,0x3e9, |
242 | 0x3ea,0x3eb,0x3ec,0x3ed,0x3ee,0x3ef,0x3ef,0x3f0, |
243 | 0x3f1,0x3f2,0x3f3,0x3f4,0x3f5,0x3f6,0x3f7,0x3f8, |
244 | 0x3f9,0x3fa,0x3fa,0x3fb,0x3fc,0x3fd,0x3fe,0x3ff |
245 | }; |
246 | |
247 | /* |
248 | * Attenuation according to GM recommendations, in -0.375 dB units. |
249 | * table[v] = 40 * log(v / 127) / -0.375 |
250 | */ |
251 | static const unsigned char snd_opl4_volume_table[128] = { |
252 | 255,224,192,173,160,150,141,134, |
253 | 128,122,117,113,109,105,102, 99, |
254 | 96, 93, 90, 88, 85, 83, 81, 79, |
255 | 77, 75, 73, 71, 70, 68, 67, 65, |
256 | 64, 62, 61, 59, 58, 57, 56, 54, |
257 | 53, 52, 51, 50, 49, 48, 47, 46, |
258 | 45, 44, 43, 42, 41, 40, 39, 39, |
259 | 38, 37, 36, 35, 34, 34, 33, 32, |
260 | 31, 31, 30, 29, 29, 28, 27, 27, |
261 | 26, 25, 25, 24, 24, 23, 22, 22, |
262 | 21, 21, 20, 19, 19, 18, 18, 17, |
263 | 17, 16, 16, 15, 15, 14, 14, 13, |
264 | 13, 12, 12, 11, 11, 10, 10, 9, |
265 | 9, 9, 8, 8, 7, 7, 6, 6, |
266 | 6, 5, 5, 4, 4, 4, 3, 3, |
267 | 2, 2, 2, 1, 1, 0, 0, 0 |
268 | }; |
269 | |
270 | /* |
271 | * Initializes all voices. |
272 | */ |
273 | void snd_opl4_synth_reset(struct snd_opl4 *opl4) |
274 | { |
275 | unsigned long flags; |
276 | int i; |
277 | |
278 | spin_lock_irqsave(&opl4->reg_lock, flags); |
279 | for (i = 0; i < OPL4_MAX_VOICES; i++) |
280 | snd_opl4_write(opl4, OPL4_REG_MISC + i, OPL4_DAMP_BIT); |
281 | spin_unlock_irqrestore(lock: &opl4->reg_lock, flags); |
282 | |
283 | INIT_LIST_HEAD(list: &opl4->off_voices); |
284 | INIT_LIST_HEAD(list: &opl4->on_voices); |
285 | memset(opl4->voices, 0, sizeof(opl4->voices)); |
286 | for (i = 0; i < OPL4_MAX_VOICES; i++) { |
287 | opl4->voices[i].number = i; |
288 | list_add_tail(new: &opl4->voices[i].list, head: &opl4->off_voices); |
289 | } |
290 | |
291 | snd_midi_channel_set_clear(chset: opl4->chset); |
292 | } |
293 | |
294 | /* |
295 | * Shuts down all voices. |
296 | */ |
297 | void snd_opl4_synth_shutdown(struct snd_opl4 *opl4) |
298 | { |
299 | unsigned long flags; |
300 | int i; |
301 | |
302 | spin_lock_irqsave(&opl4->reg_lock, flags); |
303 | for (i = 0; i < OPL4_MAX_VOICES; i++) |
304 | snd_opl4_write(opl4, OPL4_REG_MISC + i, |
305 | value: opl4->voices[i].reg_misc & ~OPL4_KEY_ON_BIT); |
306 | spin_unlock_irqrestore(lock: &opl4->reg_lock, flags); |
307 | } |
308 | |
309 | /* |
310 | * Executes the callback for all voices playing the specified note. |
311 | */ |
312 | static void snd_opl4_do_for_note(struct snd_opl4 *opl4, int note, struct snd_midi_channel *chan, |
313 | void (*func)(struct snd_opl4 *opl4, struct opl4_voice *voice)) |
314 | { |
315 | int i; |
316 | unsigned long flags; |
317 | struct opl4_voice *voice; |
318 | |
319 | spin_lock_irqsave(&opl4->reg_lock, flags); |
320 | for (i = 0; i < OPL4_MAX_VOICES; i++) { |
321 | voice = &opl4->voices[i]; |
322 | if (voice->chan == chan && voice->note == note) { |
323 | func(opl4, voice); |
324 | } |
325 | } |
326 | spin_unlock_irqrestore(lock: &opl4->reg_lock, flags); |
327 | } |
328 | |
329 | /* |
330 | * Executes the callback for all voices of to the specified channel. |
331 | */ |
332 | static void snd_opl4_do_for_channel(struct snd_opl4 *opl4, |
333 | struct snd_midi_channel *chan, |
334 | void (*func)(struct snd_opl4 *opl4, struct opl4_voice *voice)) |
335 | { |
336 | int i; |
337 | unsigned long flags; |
338 | struct opl4_voice *voice; |
339 | |
340 | spin_lock_irqsave(&opl4->reg_lock, flags); |
341 | for (i = 0; i < OPL4_MAX_VOICES; i++) { |
342 | voice = &opl4->voices[i]; |
343 | if (voice->chan == chan) { |
344 | func(opl4, voice); |
345 | } |
346 | } |
347 | spin_unlock_irqrestore(lock: &opl4->reg_lock, flags); |
348 | } |
349 | |
350 | /* |
351 | * Executes the callback for all active voices. |
352 | */ |
353 | static void snd_opl4_do_for_all(struct snd_opl4 *opl4, |
354 | void (*func)(struct snd_opl4 *opl4, struct opl4_voice *voice)) |
355 | { |
356 | int i; |
357 | unsigned long flags; |
358 | struct opl4_voice *voice; |
359 | |
360 | spin_lock_irqsave(&opl4->reg_lock, flags); |
361 | for (i = 0; i < OPL4_MAX_VOICES; i++) { |
362 | voice = &opl4->voices[i]; |
363 | if (voice->chan) |
364 | func(opl4, voice); |
365 | } |
366 | spin_unlock_irqrestore(lock: &opl4->reg_lock, flags); |
367 | } |
368 | |
369 | static void snd_opl4_update_volume(struct snd_opl4 *opl4, struct opl4_voice *voice) |
370 | { |
371 | int att; |
372 | |
373 | att = voice->sound->tone_attenuate; |
374 | att += snd_opl4_volume_table[opl4->chset->gs_master_volume & 0x7f]; |
375 | att += snd_opl4_volume_table[voice->chan->gm_volume & 0x7f]; |
376 | att += snd_opl4_volume_table[voice->chan->gm_expression & 0x7f]; |
377 | att += snd_opl4_volume_table[voice->velocity]; |
378 | att = 0x7f - (0x7f - att) * (voice->sound->volume_factor) / 0xfe - volume_boost; |
379 | if (att < 0) |
380 | att = 0; |
381 | else if (att > 0x7e) |
382 | att = 0x7e; |
383 | snd_opl4_write(opl4, OPL4_REG_LEVEL + voice->number, |
384 | value: (att << 1) | voice->level_direct); |
385 | voice->level_direct = 0; |
386 | } |
387 | |
388 | static void snd_opl4_update_pan(struct snd_opl4 *opl4, struct opl4_voice *voice) |
389 | { |
390 | int pan = voice->sound->panpot; |
391 | |
392 | if (!voice->chan->drum_channel) |
393 | pan += (voice->chan->control[MIDI_CTL_MSB_PAN] - 0x40) >> 3; |
394 | if (pan < -7) |
395 | pan = -7; |
396 | else if (pan > 7) |
397 | pan = 7; |
398 | voice->reg_misc = (voice->reg_misc & ~OPL4_PAN_POT_MASK) |
399 | | (pan & OPL4_PAN_POT_MASK); |
400 | snd_opl4_write(opl4, OPL4_REG_MISC + voice->number, value: voice->reg_misc); |
401 | } |
402 | |
403 | static void snd_opl4_update_vibrato_depth(struct snd_opl4 *opl4, |
404 | struct opl4_voice *voice) |
405 | { |
406 | int depth; |
407 | |
408 | if (voice->chan->drum_channel) |
409 | return; |
410 | depth = (7 - voice->sound->vibrato) |
411 | * (voice->chan->control[MIDI_CTL_VIBRATO_DEPTH] & 0x7f); |
412 | depth = (depth >> 7) + voice->sound->vibrato; |
413 | voice->reg_lfo_vibrato &= ~OPL4_VIBRATO_DEPTH_MASK; |
414 | voice->reg_lfo_vibrato |= depth & OPL4_VIBRATO_DEPTH_MASK; |
415 | snd_opl4_write(opl4, OPL4_REG_LFO_VIBRATO + voice->number, |
416 | value: voice->reg_lfo_vibrato); |
417 | } |
418 | |
419 | static void snd_opl4_update_pitch(struct snd_opl4 *opl4, |
420 | struct opl4_voice *voice) |
421 | { |
422 | struct snd_midi_channel *chan = voice->chan; |
423 | int note, pitch, octave; |
424 | |
425 | note = chan->drum_channel ? 60 : voice->note; |
426 | /* |
427 | * pitch is in 100/128 cents, so 0x80 is one semitone and |
428 | * 0x600 is one octave. |
429 | */ |
430 | pitch = ((note - 60) << 7) * voice->sound->key_scaling / 100 + (60 << 7); |
431 | pitch += voice->sound->pitch_offset; |
432 | if (!chan->drum_channel) |
433 | pitch += chan->gm_rpn_coarse_tuning; |
434 | pitch += chan->gm_rpn_fine_tuning >> 7; |
435 | pitch += chan->midi_pitchbend * chan->gm_rpn_pitch_bend_range / 0x2000; |
436 | if (pitch < 0) |
437 | pitch = 0; |
438 | else if (pitch >= 0x6000) |
439 | pitch = 0x5fff; |
440 | octave = pitch / 0x600 - 8; |
441 | pitch = snd_opl4_pitch_map[pitch % 0x600]; |
442 | |
443 | snd_opl4_write(opl4, OPL4_REG_OCTAVE + voice->number, |
444 | value: (octave << 4) | ((pitch >> 7) & OPL4_F_NUMBER_HIGH_MASK)); |
445 | voice->reg_f_number = (voice->reg_f_number & OPL4_TONE_NUMBER_BIT8) |
446 | | ((pitch << 1) & OPL4_F_NUMBER_LOW_MASK); |
447 | snd_opl4_write(opl4, OPL4_REG_F_NUMBER + voice->number, value: voice->reg_f_number); |
448 | } |
449 | |
450 | static void snd_opl4_update_tone_parameters(struct snd_opl4 *opl4, |
451 | struct opl4_voice *voice) |
452 | { |
453 | snd_opl4_write(opl4, OPL4_REG_ATTACK_DECAY1 + voice->number, |
454 | value: voice->sound->reg_attack_decay1); |
455 | snd_opl4_write(opl4, OPL4_REG_LEVEL_DECAY2 + voice->number, |
456 | value: voice->sound->reg_level_decay2); |
457 | snd_opl4_write(opl4, OPL4_REG_RELEASE_CORRECTION + voice->number, |
458 | value: voice->sound->reg_release_correction); |
459 | snd_opl4_write(opl4, OPL4_REG_TREMOLO + voice->number, |
460 | value: voice->sound->reg_tremolo); |
461 | } |
462 | |
463 | /* allocate one voice */ |
464 | static struct opl4_voice *snd_opl4_get_voice(struct snd_opl4 *opl4) |
465 | { |
466 | /* first, try to get the oldest key-off voice */ |
467 | if (!list_empty(head: &opl4->off_voices)) |
468 | return list_entry(opl4->off_voices.next, struct opl4_voice, list); |
469 | /* then get the oldest key-on voice */ |
470 | snd_BUG_ON(list_empty(&opl4->on_voices)); |
471 | return list_entry(opl4->on_voices.next, struct opl4_voice, list); |
472 | } |
473 | |
474 | static void (struct snd_opl4 *opl4) |
475 | { |
476 | int timeout = 200; |
477 | |
478 | while ((inb(port: opl4->fm_port) & OPL4_STATUS_LOAD) && --timeout > 0) |
479 | udelay(10); |
480 | } |
481 | |
482 | void snd_opl4_note_on(void *private_data, int note, int vel, struct snd_midi_channel *chan) |
483 | { |
484 | struct snd_opl4 *opl4 = private_data; |
485 | const struct opl4_region_ptr *regions; |
486 | struct opl4_voice *voice[2]; |
487 | const struct opl4_sound *sound[2]; |
488 | int voices = 0, i; |
489 | unsigned long flags; |
490 | |
491 | /* determine the number of voices and voice parameters */ |
492 | i = chan->drum_channel ? 0x80 : (chan->midi_program & 0x7f); |
493 | regions = &snd_yrw801_regions[i]; |
494 | for (i = 0; i < regions->count; i++) { |
495 | if (note >= regions->regions[i].key_min && |
496 | note <= regions->regions[i].key_max) { |
497 | sound[voices] = ®ions->regions[i].sound; |
498 | if (++voices >= 2) |
499 | break; |
500 | } |
501 | } |
502 | |
503 | /* allocate and initialize the needed voices */ |
504 | spin_lock_irqsave(&opl4->reg_lock, flags); |
505 | for (i = 0; i < voices; i++) { |
506 | voice[i] = snd_opl4_get_voice(opl4); |
507 | list_move_tail(list: &voice[i]->list, head: &opl4->on_voices); |
508 | voice[i]->chan = chan; |
509 | voice[i]->note = note; |
510 | voice[i]->velocity = vel & 0x7f; |
511 | voice[i]->sound = sound[i]; |
512 | } |
513 | |
514 | /* set tone number (triggers header loading) */ |
515 | for (i = 0; i < voices; i++) { |
516 | voice[i]->reg_f_number = |
517 | (sound[i]->tone >> 8) & OPL4_TONE_NUMBER_BIT8; |
518 | snd_opl4_write(opl4, OPL4_REG_F_NUMBER + voice[i]->number, |
519 | value: voice[i]->reg_f_number); |
520 | snd_opl4_write(opl4, OPL4_REG_TONE_NUMBER + voice[i]->number, |
521 | value: sound[i]->tone & 0xff); |
522 | } |
523 | |
524 | /* set parameters which can be set while loading */ |
525 | for (i = 0; i < voices; i++) { |
526 | voice[i]->reg_misc = OPL4_LFO_RESET_BIT; |
527 | snd_opl4_update_pan(opl4, voice: voice[i]); |
528 | snd_opl4_update_pitch(opl4, voice: voice[i]); |
529 | voice[i]->level_direct = OPL4_LEVEL_DIRECT_BIT; |
530 | snd_opl4_update_volume(opl4, voice: voice[i]); |
531 | } |
532 | spin_unlock_irqrestore(lock: &opl4->reg_lock, flags); |
533 | |
534 | /* wait for completion of loading */ |
535 | snd_opl4_wait_for_wave_headers(opl4); |
536 | |
537 | /* set remaining parameters */ |
538 | spin_lock_irqsave(&opl4->reg_lock, flags); |
539 | for (i = 0; i < voices; i++) { |
540 | snd_opl4_update_tone_parameters(opl4, voice: voice[i]); |
541 | voice[i]->reg_lfo_vibrato = voice[i]->sound->reg_lfo_vibrato; |
542 | snd_opl4_update_vibrato_depth(opl4, voice: voice[i]); |
543 | } |
544 | |
545 | /* finally, switch on all voices */ |
546 | for (i = 0; i < voices; i++) { |
547 | voice[i]->reg_misc = |
548 | (voice[i]->reg_misc & 0x1f) | OPL4_KEY_ON_BIT; |
549 | snd_opl4_write(opl4, OPL4_REG_MISC + voice[i]->number, |
550 | value: voice[i]->reg_misc); |
551 | } |
552 | spin_unlock_irqrestore(lock: &opl4->reg_lock, flags); |
553 | } |
554 | |
555 | static void snd_opl4_voice_off(struct snd_opl4 *opl4, struct opl4_voice *voice) |
556 | { |
557 | list_move_tail(list: &voice->list, head: &opl4->off_voices); |
558 | |
559 | voice->reg_misc &= ~OPL4_KEY_ON_BIT; |
560 | snd_opl4_write(opl4, OPL4_REG_MISC + voice->number, value: voice->reg_misc); |
561 | } |
562 | |
563 | void snd_opl4_note_off(void *private_data, int note, int vel, struct snd_midi_channel *chan) |
564 | { |
565 | struct snd_opl4 *opl4 = private_data; |
566 | |
567 | snd_opl4_do_for_note(opl4, note, chan, func: snd_opl4_voice_off); |
568 | } |
569 | |
570 | static void snd_opl4_terminate_voice(struct snd_opl4 *opl4, struct opl4_voice *voice) |
571 | { |
572 | list_move_tail(list: &voice->list, head: &opl4->off_voices); |
573 | |
574 | voice->reg_misc = (voice->reg_misc & ~OPL4_KEY_ON_BIT) | OPL4_DAMP_BIT; |
575 | snd_opl4_write(opl4, OPL4_REG_MISC + voice->number, value: voice->reg_misc); |
576 | } |
577 | |
578 | void snd_opl4_terminate_note(void *private_data, int note, struct snd_midi_channel *chan) |
579 | { |
580 | struct snd_opl4 *opl4 = private_data; |
581 | |
582 | snd_opl4_do_for_note(opl4, note, chan, func: snd_opl4_terminate_voice); |
583 | } |
584 | |
585 | void snd_opl4_control(void *private_data, int type, struct snd_midi_channel *chan) |
586 | { |
587 | struct snd_opl4 *opl4 = private_data; |
588 | |
589 | switch (type) { |
590 | case MIDI_CTL_MSB_MODWHEEL: |
591 | chan->control[MIDI_CTL_VIBRATO_DEPTH] = chan->control[MIDI_CTL_MSB_MODWHEEL]; |
592 | snd_opl4_do_for_channel(opl4, chan, func: snd_opl4_update_vibrato_depth); |
593 | break; |
594 | case MIDI_CTL_MSB_MAIN_VOLUME: |
595 | snd_opl4_do_for_channel(opl4, chan, func: snd_opl4_update_volume); |
596 | break; |
597 | case MIDI_CTL_MSB_PAN: |
598 | snd_opl4_do_for_channel(opl4, chan, func: snd_opl4_update_pan); |
599 | break; |
600 | case MIDI_CTL_MSB_EXPRESSION: |
601 | snd_opl4_do_for_channel(opl4, chan, func: snd_opl4_update_volume); |
602 | break; |
603 | case MIDI_CTL_VIBRATO_RATE: |
604 | /* not yet supported */ |
605 | break; |
606 | case MIDI_CTL_VIBRATO_DEPTH: |
607 | snd_opl4_do_for_channel(opl4, chan, func: snd_opl4_update_vibrato_depth); |
608 | break; |
609 | case MIDI_CTL_VIBRATO_DELAY: |
610 | /* not yet supported */ |
611 | break; |
612 | case MIDI_CTL_E1_REVERB_DEPTH: |
613 | /* |
614 | * Each OPL4 voice has a bit called "Pseudo-Reverb", but |
615 | * IMHO _not_ using it enhances the listening experience. |
616 | */ |
617 | break; |
618 | case MIDI_CTL_PITCHBEND: |
619 | snd_opl4_do_for_channel(opl4, chan, func: snd_opl4_update_pitch); |
620 | break; |
621 | } |
622 | } |
623 | |
624 | void snd_opl4_sysex(void *private_data, unsigned char *buf, int len, |
625 | int parsed, struct snd_midi_channel_set *chset) |
626 | { |
627 | struct snd_opl4 *opl4 = private_data; |
628 | |
629 | if (parsed == SNDRV_MIDI_SYSEX_GS_MASTER_VOLUME) |
630 | snd_opl4_do_for_all(opl4, func: snd_opl4_update_volume); |
631 | } |
632 | |