replace setParameter
[software/lv2-mdametapiano.git] / src / mdaPiano.cpp
1 /* ==================================================
2 * LV2 port of the famous mda Piano VSTi
3 * ==================================================
4 *
5 * Port
6 * Author: Ricardo Wurmus (rekado)
7 * Based on: mda-vst-src-2010-02-14.zip
8 *
9 * mda Piano v1.0
10 * Copyright(c)1999-2000 Paul Kellett (maxim digital audio)
11 * Based on VST2 SDK (c)1996-1999 Steinberg Soft und Hardware GmbH, All Rights Reserved
12 *
13 * ==================================================
14 */
15
16 #include "mdaPianoCommon.h"
17 #include "mdaPiano.h"
18 #include <cstdlib> //for exit
19
20 #include <stdio.h>
21 #include <math.h>
22
23 #define STRING_BUF 2048
24 static const char* sample_file = "samples.raw";
25
26
27 mdaPiano::mdaPiano(double rate)
28 : LV2::Synth<mdaPianoVoice, mdaPiano>(p_n_ports, p_midi) {
29
30 cmax = 0x7F; //just in case...
31
32 load_samples(&waves);
33 load_kgrp(kgrp);
34
35 for(uint32_t i=0; i<NVOICES; ++i) {
36 voices[i] = new mdaPianoVoice(rate, waves, kgrp);
37 add_voices(voices[i]);
38 }
39
40 notes[0] = EVENTS_DONE;
41 cpos = sustain = activevoices = 0;
42 comb = new float[256];
43
44 update();
45 }
46
47 //parameter change
48 void mdaPiano::update() {
49 for (uint32_t v=0; v<NVOICES; ++v) {
50 voices[v]->update(Current);
51 }
52 }
53
54
55 void mdaPiano::setParameter(unsigned char id, float value)
56 {
57 if(id>=NPARAMS)
58 return;
59 *p(id+PARAM_OFFSET) = value;
60 update();
61 #ifdef DEBUG
62 printf("changed %i to %f\n", id, value);
63 #endif
64 }
65
66
67 void mdaPiano::handle_midi(uint32_t size, unsigned char* data) {
68 #ifdef DEBUG
69 printf("%d\n", data[1]);
70 #endif
71
72 //discard invalid midi messages
73 if (size != 3)
74 return;
75
76 //receive on all channels
77 switch(data[0] & 0xf0)
78 {
79 case 0x80: //note off
80 notes[npos++] = data[1] & 0x7F; //note
81 notes[npos++] = 0; //vel
82 break;
83
84 case 0x90: //note on
85 notes[npos++] = data[1] & 0x7F; //note
86 notes[npos++] = data[2] & 0x7F; //vel
87 break;
88
89 case 0xB0: //controller
90 switch(data[1])
91 {
92 case 0x01: //mod wheel
93 case 0x43: //soft pedal
94 muff = 0.01f * (float)((127 - data[2]) * (127 - data[2]));
95 break;
96
97 case 0x07: //volume
98 volume = 0.00002f * (float)(data[2] * data[2]);
99 break;
100
101 case 0x40: //sustain pedal
102 case 0x42: //sustenuto pedal
103 sustain = data[2] & 0x40;
104 if(sustain==0)
105 {
106 notes[npos++] = SUSTAIN; //end all sustained notes
107 notes[npos++] = 0;
108 }
109 break;
110
111 //all sound off
112 case 0x78:
113 //all notes off
114 case 0x7b:
115 default:
116 for(short v=0; v<NVOICES; v++) {
117 voices[v]->reset();
118 }
119 break;
120 }
121 break;
122
123 default: break;
124 }
125 }
126
127
128 // TODO: load this from a file
129 void mdaPiano::load_kgrp(KGRP *kgrp)
130 {
131 //Waveform data and keymapping is hard-wired in *this* version
132 kgrp[ 0].root = 36; kgrp[ 0].high = 37; kgrp[ 0].pos = 0; kgrp[ 0].end = 36275; kgrp[ 0].loop = 14774;
133 kgrp[ 1].root = 40; kgrp[ 1].high = 41; kgrp[ 1].pos = 36278; kgrp[ 1].end = 83135; kgrp[ 1].loop = 16268;
134 kgrp[ 2].root = 43; kgrp[ 2].high = 45; kgrp[ 2].pos = 83137; kgrp[ 2].end = 146756; kgrp[ 2].loop = 33541;
135 kgrp[ 3].root = 48; kgrp[ 3].high = 49; kgrp[ 3].pos = 146758; kgrp[ 3].end = 204997; kgrp[ 3].loop = 21156;
136 kgrp[ 4].root = 52; kgrp[ 4].high = 53; kgrp[ 4].pos = 204999; kgrp[ 4].end = 244908; kgrp[ 4].loop = 17191;
137 kgrp[ 5].root = 55; kgrp[ 5].high = 57; kgrp[ 5].pos = 244910; kgrp[ 5].end = 290978; kgrp[ 5].loop = 23286;
138 kgrp[ 6].root = 60; kgrp[ 6].high = 61; kgrp[ 6].pos = 290980; kgrp[ 6].end = 342948; kgrp[ 6].loop = 18002;
139 kgrp[ 7].root = 64; kgrp[ 7].high = 65; kgrp[ 7].pos = 342950; kgrp[ 7].end = 391750; kgrp[ 7].loop = 19746;
140 kgrp[ 8].root = 67; kgrp[ 8].high = 69; kgrp[ 8].pos = 391752; kgrp[ 8].end = 436915; kgrp[ 8].loop = 22253;
141 kgrp[ 9].root = 72; kgrp[ 9].high = 73; kgrp[ 9].pos = 436917; kgrp[ 9].end = 468807; kgrp[ 9].loop = 8852;
142 kgrp[10].root = 76; kgrp[10].high = 77; kgrp[10].pos = 468809; kgrp[10].end = 492772; kgrp[10].loop = 9693;
143 kgrp[11].root = 79; kgrp[11].high = 81; kgrp[11].pos = 492774; kgrp[11].end = 532293; kgrp[11].loop = 10596;
144 kgrp[12].root = 84; kgrp[12].high = 85; kgrp[12].pos = 532295; kgrp[12].end = 560192; kgrp[12].loop = 6011;
145 kgrp[13].root = 88; kgrp[13].high = 89; kgrp[13].pos = 560194; kgrp[13].end = 574121; kgrp[13].loop = 3414;
146 kgrp[14].root = 93; kgrp[14].high = 999; kgrp[14].pos = 574123; kgrp[14].end = 586343; kgrp[14].loop = 2399;
147 }
148
149
150 void mdaPiano::load_samples(short **buffer)
151 {
152 FILE *f;
153 long num, size;
154 char filepath[STRING_BUF];
155
156 strncpy(filepath, bundle_path(), STRING_BUF);
157 strncat(filepath,
158 sample_file,
159 STRING_BUF - strlen(filepath));
160 f = fopen(filepath, "rb");
161 if (f == NULL) {
162 fputs("File error", stderr);
163 exit(1);
164 }
165
166 // obtain file size
167 fseek(f, 0, SEEK_END);
168 size = ftell(f);
169 rewind(f);
170
171 // allocate memory to contain the whole file
172 *buffer = (short*) malloc (sizeof(short)*size);
173 if (*buffer == NULL) {
174 fputs("Memory error", stderr);
175 exit(2);
176 }
177
178 // copy the file into the buffer
179 num = fread(*buffer, 1, size, f);
180 if (num != size) {
181 fputs ("Reading error", stderr);
182 exit (3);
183 }
184 fclose (f);
185 return;
186 }