2
* OPL4 MIDI synthesizer functions
4
* Copyright (c) 2003 by Clemens Ladisch <clemens@ladisch.de>
7
* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
10
* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions, and the following disclaimer,
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* without modification.
13
* 2. The name of the author may not be used to endorse or promote products
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* derived from this software without specific prior written permission.
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
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* Foundation; either version 2 of the License, or (at your option) any later
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
24
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR
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* ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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#include "opl4_local.h"
35
#include <linux/delay.h>
37
#include <sound/asoundef.h>
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
50
* This table maps 100/128 cents to F_NUMBER.
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
248
* Attenuation according to GM recommendations, in -0.375 dB units.
249
* table[v] = 40 * log(v / 127) / -0.375
251
static 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
271
* Initializes all voices.
273
void snd_opl4_synth_reset(struct snd_opl4 *opl4)
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(&opl4->reg_lock, flags);
283
INIT_LIST_HEAD(&opl4->off_voices);
284
INIT_LIST_HEAD(&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(&opl4->voices[i].list, &opl4->off_voices);
291
snd_midi_channel_set_clear(opl4->chset);
295
* Shuts down all voices.
297
void snd_opl4_synth_shutdown(struct snd_opl4 *opl4)
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
opl4->voices[i].reg_misc & ~OPL4_KEY_ON_BIT);
306
spin_unlock_irqrestore(&opl4->reg_lock, flags);
310
* Executes the callback for all voices playing the specified note.
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))
317
struct opl4_voice *voice;
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) {
326
spin_unlock_irqrestore(&opl4->reg_lock, flags);
330
* Executes the callback for all voices of to the specified channel.
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))
338
struct opl4_voice *voice;
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) {
347
spin_unlock_irqrestore(&opl4->reg_lock, flags);
351
* Executes the callback for all active voices.
353
static void snd_opl4_do_for_all(struct snd_opl4 *opl4,
354
void (*func)(struct snd_opl4 *opl4, struct opl4_voice *voice))
358
struct opl4_voice *voice;
360
spin_lock_irqsave(&opl4->reg_lock, flags);
361
for (i = 0; i < OPL4_MAX_VOICES; i++) {
362
voice = &opl4->voices[i];
366
spin_unlock_irqrestore(&opl4->reg_lock, flags);
369
static void snd_opl4_update_volume(struct snd_opl4 *opl4, struct opl4_voice *voice)
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;
383
snd_opl4_write(opl4, OPL4_REG_LEVEL + voice->number,
384
(att << 1) | voice->level_direct);
385
voice->level_direct = 0;
388
static void snd_opl4_update_pan(struct snd_opl4 *opl4, struct opl4_voice *voice)
390
int pan = voice->sound->panpot;
392
if (!voice->chan->drum_channel)
393
pan += (voice->chan->control[MIDI_CTL_MSB_PAN] - 0x40) >> 3;
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, voice->reg_misc);
403
static void snd_opl4_update_vibrato_depth(struct snd_opl4 *opl4,
404
struct opl4_voice *voice)
408
if (voice->chan->drum_channel)
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
voice->reg_lfo_vibrato);
419
static void snd_opl4_update_pitch(struct snd_opl4 *opl4,
420
struct opl4_voice *voice)
422
struct snd_midi_channel *chan = voice->chan;
423
int note, pitch, octave;
425
note = chan->drum_channel ? 60 : voice->note;
427
* pitch is in 100/128 cents, so 0x80 is one semitone and
428
* 0x600 is one octave.
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;
438
else if (pitch >= 0x6000)
440
octave = pitch / 0x600 - 8;
441
pitch = snd_opl4_pitch_map[pitch % 0x600];
443
snd_opl4_write(opl4, OPL4_REG_OCTAVE + voice->number,
444
(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, voice->reg_f_number);
450
static void snd_opl4_update_tone_parameters(struct snd_opl4 *opl4,
451
struct opl4_voice *voice)
453
snd_opl4_write(opl4, OPL4_REG_ATTACK_DECAY1 + voice->number,
454
voice->sound->reg_attack_decay1);
455
snd_opl4_write(opl4, OPL4_REG_LEVEL_DECAY2 + voice->number,
456
voice->sound->reg_level_decay2);
457
snd_opl4_write(opl4, OPL4_REG_RELEASE_CORRECTION + voice->number,
458
voice->sound->reg_release_correction);
459
snd_opl4_write(opl4, OPL4_REG_TREMOLO + voice->number,
460
voice->sound->reg_tremolo);
463
/* allocate one voice */
464
static struct opl4_voice *snd_opl4_get_voice(struct snd_opl4 *opl4)
466
/* first, try to get the oldest key-off voice */
467
if (!list_empty(&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);
474
static void snd_opl4_wait_for_wave_headers(struct snd_opl4 *opl4)
478
while ((inb(opl4->fm_port) & OPL4_STATUS_LOAD) && --timeout > 0)
482
void snd_opl4_note_on(void *private_data, int note, int vel, struct snd_midi_channel *chan)
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];
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;
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_del(&voice[i]->list);
508
list_add_tail(&voice[i]->list, &opl4->on_voices);
509
voice[i]->chan = chan;
510
voice[i]->note = note;
511
voice[i]->velocity = vel & 0x7f;
512
voice[i]->sound = sound[i];
515
/* set tone number (triggers header loading) */
516
for (i = 0; i < voices; i++) {
517
voice[i]->reg_f_number =
518
(sound[i]->tone >> 8) & OPL4_TONE_NUMBER_BIT8;
519
snd_opl4_write(opl4, OPL4_REG_F_NUMBER + voice[i]->number,
520
voice[i]->reg_f_number);
521
snd_opl4_write(opl4, OPL4_REG_TONE_NUMBER + voice[i]->number,
522
sound[i]->tone & 0xff);
525
/* set parameters which can be set while loading */
526
for (i = 0; i < voices; i++) {
527
voice[i]->reg_misc = OPL4_LFO_RESET_BIT;
528
snd_opl4_update_pan(opl4, voice[i]);
529
snd_opl4_update_pitch(opl4, voice[i]);
530
voice[i]->level_direct = OPL4_LEVEL_DIRECT_BIT;
531
snd_opl4_update_volume(opl4, voice[i]);
533
spin_unlock_irqrestore(&opl4->reg_lock, flags);
535
/* wait for completion of loading */
536
snd_opl4_wait_for_wave_headers(opl4);
538
/* set remaining parameters */
539
spin_lock_irqsave(&opl4->reg_lock, flags);
540
for (i = 0; i < voices; i++) {
541
snd_opl4_update_tone_parameters(opl4, voice[i]);
542
voice[i]->reg_lfo_vibrato = voice[i]->sound->reg_lfo_vibrato;
543
snd_opl4_update_vibrato_depth(opl4, voice[i]);
546
/* finally, switch on all voices */
547
for (i = 0; i < voices; i++) {
549
(voice[i]->reg_misc & 0x1f) | OPL4_KEY_ON_BIT;
550
snd_opl4_write(opl4, OPL4_REG_MISC + voice[i]->number,
553
spin_unlock_irqrestore(&opl4->reg_lock, flags);
556
static void snd_opl4_voice_off(struct snd_opl4 *opl4, struct opl4_voice *voice)
558
list_del(&voice->list);
559
list_add_tail(&voice->list, &opl4->off_voices);
561
voice->reg_misc &= ~OPL4_KEY_ON_BIT;
562
snd_opl4_write(opl4, OPL4_REG_MISC + voice->number, voice->reg_misc);
565
void snd_opl4_note_off(void *private_data, int note, int vel, struct snd_midi_channel *chan)
567
struct snd_opl4 *opl4 = private_data;
569
snd_opl4_do_for_note(opl4, note, chan, snd_opl4_voice_off);
572
static void snd_opl4_terminate_voice(struct snd_opl4 *opl4, struct opl4_voice *voice)
574
list_del(&voice->list);
575
list_add_tail(&voice->list, &opl4->off_voices);
577
voice->reg_misc = (voice->reg_misc & ~OPL4_KEY_ON_BIT) | OPL4_DAMP_BIT;
578
snd_opl4_write(opl4, OPL4_REG_MISC + voice->number, voice->reg_misc);
581
void snd_opl4_terminate_note(void *private_data, int note, struct snd_midi_channel *chan)
583
struct snd_opl4 *opl4 = private_data;
585
snd_opl4_do_for_note(opl4, note, chan, snd_opl4_terminate_voice);
588
void snd_opl4_control(void *private_data, int type, struct snd_midi_channel *chan)
590
struct snd_opl4 *opl4 = private_data;
593
case MIDI_CTL_MSB_MODWHEEL:
594
chan->control[MIDI_CTL_VIBRATO_DEPTH] = chan->control[MIDI_CTL_MSB_MODWHEEL];
595
snd_opl4_do_for_channel(opl4, chan, snd_opl4_update_vibrato_depth);
597
case MIDI_CTL_MSB_MAIN_VOLUME:
598
snd_opl4_do_for_channel(opl4, chan, snd_opl4_update_volume);
600
case MIDI_CTL_MSB_PAN:
601
snd_opl4_do_for_channel(opl4, chan, snd_opl4_update_pan);
603
case MIDI_CTL_MSB_EXPRESSION:
604
snd_opl4_do_for_channel(opl4, chan, snd_opl4_update_volume);
606
case MIDI_CTL_VIBRATO_RATE:
607
/* not yet supported */
609
case MIDI_CTL_VIBRATO_DEPTH:
610
snd_opl4_do_for_channel(opl4, chan, snd_opl4_update_vibrato_depth);
612
case MIDI_CTL_VIBRATO_DELAY:
613
/* not yet supported */
615
case MIDI_CTL_E1_REVERB_DEPTH:
617
* Each OPL4 voice has a bit called "Pseudo-Reverb", but
618
* IMHO _not_ using it enhances the listening experience.
621
case MIDI_CTL_PITCHBEND:
622
snd_opl4_do_for_channel(opl4, chan, snd_opl4_update_pitch);
627
void snd_opl4_sysex(void *private_data, unsigned char *buf, int len,
628
int parsed, struct snd_midi_channel_set *chset)
630
struct snd_opl4 *opl4 = private_data;
632
if (parsed == SNDRV_MIDI_SYSEX_GS_MASTER_VOLUME)
633
snd_opl4_do_for_all(opl4, snd_opl4_update_volume);
added
removed
updates/alsa-driver/alsa-kernel/drivers/opl4/opl4_synth.c
