1 /* FluidSynth - A Software Synthesizer
2 *
3 * Copyright (C) 2003 Peter Hanappe and others.
4 *
5 * This library is free software; you can redistribute it and/or
6 * modify it under the terms of the GNU Lesser General Public License
7 * as published by the Free Software Foundation; either version 2.1 of
8 * the License, or (at your option) any later version.
9 *
10 * This library is distributed in the hope that it will be useful, but
11 * WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 * Lesser General Public License for more details.
14 *
15 * You should have received a copy of the GNU Lesser General Public
16 * License along with this library; if not, write to the Free
17 * Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
18 * 02110-1301, USA
19 */
20
21
22 #include "fluid_gen.h"
23 #include "fluid_chan.h"
24
25
26 /* See SFSpec21 $8.1.3 */
27 static const fluid_gen_info_t fluid_gen_info[] =
28 {
29 /* number/name init nrpn-scale min max def */
30 { GEN_STARTADDROFS, 1, 1, 0.0f, 1e10f, 0.0f },
31 { GEN_ENDADDROFS, 1, 1, -1e10f, 0.0f, 0.0f },
32 { GEN_STARTLOOPADDROFS, 1, 1, -1e10f, 1e10f, 0.0f },
33 { GEN_ENDLOOPADDROFS, 1, 1, -1e10f, 1e10f, 0.0f },
34 { GEN_STARTADDRCOARSEOFS, 0, 1, 0.0f, 1e10f, 0.0f },
35 { GEN_MODLFOTOPITCH, 1, 2, -12000.0f, 12000.0f, 0.0f },
36 { GEN_VIBLFOTOPITCH, 1, 2, -12000.0f, 12000.0f, 0.0f },
37 { GEN_MODENVTOPITCH, 1, 2, -12000.0f, 12000.0f, 0.0f },
38 { GEN_FILTERFC, 1, 2, 1500.0f, 13500.0f, 13500.0f },
39 { GEN_FILTERQ, 1, 1, 0.0f, 960.0f, 0.0f },
40 { GEN_MODLFOTOFILTERFC, 1, 2, -12000.0f, 12000.0f, 0.0f },
41 { GEN_MODENVTOFILTERFC, 1, 2, -12000.0f, 12000.0f, 0.0f },
42 { GEN_ENDADDRCOARSEOFS, 0, 1, -1e10f, 0.0f, 0.0f },
43 { GEN_MODLFOTOVOL, 1, 1, -960.0f, 960.0f, 0.0f },
44 { GEN_UNUSED1, 0, 0, 0.0f, 0.0f, 0.0f },
45 { GEN_CHORUSSEND, 1, 1, 0.0f, 1000.0f, 0.0f },
46 { GEN_REVERBSEND, 1, 1, 0.0f, 1000.0f, 0.0f },
47 { GEN_PAN, 1, 1, -500.0f, 500.0f, 0.0f },
48 { GEN_UNUSED2, 0, 0, 0.0f, 0.0f, 0.0f },
49 { GEN_UNUSED3, 0, 0, 0.0f, 0.0f, 0.0f },
50 { GEN_UNUSED4, 0, 0, 0.0f, 0.0f, 0.0f },
51 { GEN_MODLFODELAY, 1, 2, -12000.0f, 5000.0f, -12000.0f },
52 { GEN_MODLFOFREQ, 1, 4, -16000.0f, 4500.0f, 0.0f },
53 { GEN_VIBLFODELAY, 1, 2, -12000.0f, 5000.0f, -12000.0f },
54 { GEN_VIBLFOFREQ, 1, 4, -16000.0f, 4500.0f, 0.0f },
55 { GEN_MODENVDELAY, 1, 2, -12000.0f, 5000.0f, -12000.0f },
56 { GEN_MODENVATTACK, 1, 2, -12000.0f, 8000.0f, -12000.0f },
57 { GEN_MODENVHOLD, 1, 2, -12000.0f, 5000.0f, -12000.0f },
58 { GEN_MODENVDECAY, 1, 2, -12000.0f, 8000.0f, -12000.0f },
59 { GEN_MODENVSUSTAIN, 0, 1, 0.0f, 1000.0f, 0.0f },
60 { GEN_MODENVRELEASE, 1, 2, -12000.0f, 8000.0f, -12000.0f },
61 { GEN_KEYTOMODENVHOLD, 0, 1, -1200.0f, 1200.0f, 0.0f },
62 { GEN_KEYTOMODENVDECAY, 0, 1, -1200.0f, 1200.0f, 0.0f },
63 { GEN_VOLENVDELAY, 1, 2, -12000.0f, 5000.0f, -12000.0f },
64 { GEN_VOLENVATTACK, 1, 2, -12000.0f, 8000.0f, -12000.0f },
65 { GEN_VOLENVHOLD, 1, 2, -12000.0f, 5000.0f, -12000.0f },
66 { GEN_VOLENVDECAY, 1, 2, -12000.0f, 8000.0f, -12000.0f },
67 { GEN_VOLENVSUSTAIN, 0, 1, 0.0f, 1440.0f, 0.0f },
68 { GEN_VOLENVRELEASE, 1, 2, -12000.0f, 8000.0f, -12000.0f },
69 { GEN_KEYTOVOLENVHOLD, 0, 1, -1200.0f, 1200.0f, 0.0f },
70 { GEN_KEYTOVOLENVDECAY, 0, 1, -1200.0f, 1200.0f, 0.0f },
71 { GEN_INSTRUMENT, 0, 0, 0.0f, 0.0f, 0.0f },
72 { GEN_RESERVED1, 0, 0, 0.0f, 0.0f, 0.0f },
73 { GEN_KEYRANGE, 0, 0, 0.0f, 127.0f, 0.0f },
74 { GEN_VELRANGE, 0, 0, 0.0f, 127.0f, 0.0f },
75 { GEN_STARTLOOPADDRCOARSEOFS, 0, 1, -1e10f, 1e10f, 0.0f },
76 { GEN_KEYNUM, 1, 0, 0.0f, 127.0f, -1.0f },
77 { GEN_VELOCITY, 1, 1, 0.0f, 127.0f, -1.0f },
78 { GEN_ATTENUATION, 1, 1, 0.0f, 1440.0f, 0.0f },
79 { GEN_RESERVED2, 0, 0, 0.0f, 0.0f, 0.0f },
80 { GEN_ENDLOOPADDRCOARSEOFS, 0, 1, -1e10f, 1e10f, 0.0f },
81 { GEN_COARSETUNE, 0, 1, -120.0f, 120.0f, 0.0f },
82 { GEN_FINETUNE, 0, 1, -99.0f, 99.0f, 0.0f },
83 { GEN_SAMPLEID, 0, 0, 0.0f, 0.0f, 0.0f },
84 { GEN_SAMPLEMODE, 0, 0, 0.0f, 0.0f, 0.0f },
85 { GEN_RESERVED3, 0, 0, 0.0f, 0.0f, 0.0f },
86 { GEN_SCALETUNE, 0, 1, 0.0f, 1200.0f, 100.0f },
87 { GEN_EXCLUSIVECLASS, 0, 0, 0.0f, 0.0f, 0.0f },
88 { GEN_OVERRIDEROOTKEY, 1, 0, 0.0f, 127.0f, -1.0f },
89 { GEN_PITCH, 1, 0, 0.0f, 127.0f, 0.0f },
90 { GEN_CUSTOM_BALANCE, 1, 0, -960.0f, 960.0f, 0.0f },
91 { GEN_CUSTOM_FILTERFC, 1, 2, 0.0f, 22050.0f, 0.0f },
92 { GEN_CUSTOM_FILTERQ, 1, 1, 0.0f, 960.0f, 0.0f }
93 };
94
95 /* fluid_gen_init
96 *
97 * Set an array of generators to their initial value
98 */
99 void
fluid_gen_init(fluid_gen_t * gen,fluid_channel_t * channel)100 fluid_gen_init(fluid_gen_t *gen, fluid_channel_t *channel)
101 {
102 int i;
103
104 for(i = 0; i < GEN_LAST; i++)
105 {
106 gen[i].flags = GEN_UNUSED;
107 gen[i].mod = 0.0;
108 gen[i].nrpn = (channel == NULL) ? 0.0 : fluid_channel_get_gen(channel, i);
109 gen[i].val = fluid_gen_info[i].def;
110 }
111 }
112
fluid_gen_scale(int gen,float value)113 fluid_real_t fluid_gen_scale(int gen, float value)
114 {
115 return (fluid_gen_info[gen].min
116 + value * (fluid_gen_info[gen].max - fluid_gen_info[gen].min));
117 }
118
fluid_gen_scale_nrpn(int gen,int data)119 fluid_real_t fluid_gen_scale_nrpn(int gen, int data)
120 {
121 data = data - 8192;
122 fluid_clip(data, -8192, 8192);
123 return (fluid_real_t)(data * fluid_gen_info[gen].nrpn_scale);
124 }
125