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/*
* Diverse Bristol audio routines.
* Copyright (c) by Nick Copeland <nickycopeland@hotmail.com> 1996,2012
*
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, see <http://www.gnu.org/licenses/>.
*
*/
#define OSC_COUNT 109
#define OSC_LIMIT 91
#define WAVE_SIZE 1024
#define WAVE_COUNT 8
#define BUS_COUNT 9
#define NEW_CLICK
/*
* These are the midi note offsets for any given key harmonics.
*/
static int offsets[BUS_COUNT] = {-12, 7, 0, 12, 19, 24, 28, 31, 36};
/*
* Get a humungous chunk of memory, SAMPLE_COUNT should come from the audiomain
* structure. This is the pointer to that chunk of 'current buffer working mem'.
*/
static float *oscillators = NULL;
static int wi[256] = {
0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, /* Lower foldbacks not used */
0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, /* Lower foldbacks not used */
0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, /* Foldback */
0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, /* First octave */
12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23,
24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35,
36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47,
48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59,
60, 61, 62, 63, 64, 65, 66, 67, 68, 69, 70, 71,
72, 73, 74, 75, 76, 77, 78, 79, 80, 81, 82, 83,
84, 85, 86, 87, 88, 89, 90, 79, 80, 81, 82, 83, /* Foldback starts again */
84, 85, 86, 87, 88, 89, 90, 79, 80, 81, 82, 83, /* And repeats from here */
84, 85, 86, 87, 88, 89, 90, 79, 80, 81, 82, 83,
84, 85, 86, 87, 88, 89, 90, 79, 80, 81, 82, 83,
84, 85, 86, 87, 88, 89, 90, 79, 80, 81, 82, 83,
84, 85, 86, 87, 88, 89, 90, 79, 80, 81, 82, 83,
84, 85, 86, 87, 88, 89, 90, 79, 80, 81, 82, 83,
84, 85, 86, 87, 88, 89, 90, 79, 80, 81, 82, 83,
84, 85, 86, 87, 88, 89, 90, 79, 80, 81, 82, 83,
84, 85, 86, 87, 88, 89, 90, 79, 80, 81, 82, 83,
};
/*
* This is the compartments configuration, alterable in the tonewheel config
* file.
*/
static int compartments[24][4] = {
{0, 48, 12, 60},
{24, 72, 37, -1},
{7, 55, 19, 67},
{31, 79, 43, 86},
{2, 50, 14, 62},
{26, 74, 38, -1},
{9, 57, 21, 69},
{33, 81, 45, 88},
{4, 52, 16, 64},
{28, 76, 40, -1},
{11, 59, 23, 71},
{35, 83, 47, 90},
{6, 54, 18, 66},
{30, 78, 42, 85},
{1, 49, 13, 61},
{25, 73, 37, -1},
{8, 56, 20, 68},
{32, 80, 44, 54},
{3, 51, 15, 63},
{27, 75, 13, -1},
{10, 58, 22, 70},
{34, 82, 46, 89},
{5, 53, 17, 65},
{29, 77, 41, 84}
};
/*
* This will emulate the tapering resistors of the drawbar box. Each line from
* the tonewheel engine was drawn through a cable tree to each note and would
* traverse different distances and signal loss for which tapering resistors
* were added to even out the gains. There is an aspect of crosstalk that has
* not been taken care of here. These are hidden in the tonewheel structure.
*/
#define R100 0.4
#define R50 0.6
#define R34 0.8
#define R24 1.0
#define R15 1.2
#define R10 1.4
#define R0 0.4
#define R1 0.6
#define R2 0.8
#define R3 1.0
#define R4 1.2
#define R5 1.2
static float tresistors[6] = {R100, R50, R34, R24, R15, R10};
static float deftp[BUS_COUNT] = {R100, R50, R34, R34, R24, R24, R24, R15, R10};
/*
* We then need to add a tapering configuration, this should also be in the
* tonewheel config.
*/
static float tapers[OSC_LIMIT][9] = {
{R0, R2, R1, R2, R5, R5, R4, R3, R3},
{R0, R2, R1, R2, R5, R5, R4, R3, R3},
{R0, R2, R1, R2, R5, R5, R4, R3, R3},
{R0, R2, R1, R2, R5, R5, R4, R3, R3},
{R0, R2, R1, R2, R5, R5, R4, R3, R3},
{R0, R2, R1, R2, R5, R5, R4, R3, R3},
{R0, R2, R1, R2, R5, R5, R4, R3, R3},
{R0, R2, R1, R2, R5, R5, R4, R3, R3},
{R0, R2, R1, R2, R5, R5, R4, R3, R3},
{R0, R2, R1, R2, R5, R5, R4, R3, R3},
{R1, R2, R1, R2, R5, R5, R4, R3, R3},
{R1, R2, R1, R2, R5, R4, R4, R3, R3},
{R1, R2, R1, R2, R4, R4, R4, R3, R3},
{R1, R2, R1, R3, R4, R4, R4, R3, R3},
{R1, R3, R1, R3, R4, R4, R4, R3, R3},
{R1, R3, R2, R3, R4, R4, R4, R3, R3},
{R2, R3, R2, R3, R4, R4, R4, R3, R3},
{R2, R3, R2, R3, R4, R4, R4, R3, R3},
{R2, R3, R2, R3, R4, R4, R3, R3, R3},
{R2, R3, R2, R3, R4, R4, R3, R3, R3},
{R2, R3, R2, R3, R3, R3, R3, R3, R3},
{R2, R3, R2, R3, R3, R3, R3, R3, R3},
{R2, R3, R2, R3, R3, R3, R3, R3, R3},
{R2, R3, R3, R3, R3, R3, R3, R3, R3},
{R3, R3, R3, R3, R3, R3, R3, R3, R3},
{R3, R3, R3, R3, R3, R3, R3, R3, R3},
{R3, R3, R3, R3, R3, R3, R3, R3, R3},
{R3, R3, R3, R3, R3, R3, R3, R3, R3},
{R3, R3, R3, R3, R3, R3, R3, R3, R3},
{R3, R3, R3, R3, R3, R3, R3, R3, R3},
{R3, R3, R3, R3, R3, R3, R3, R3, R3},
{R3, R3, R3, R3, R3, R3, R3, R3, R3},
{R3, R3, R3, R3, R3, R3, R3, R3, R3},
{R3, R3, R3, R3, R3, R3, R3, R3, R3},
{R3, R3, R3, R3, R3, R3, R3, R3, R3},
{R3, R3, R3, R3, R3, R3, R3, R3, R3},
{R4, R3, R3, R3, R3, R3, R3, R3, R3},
{R4, R3, R4, R3, R3, R3, R3, R3, R3},
{R4, R4, R4, R3, R3, R3, R3, R3, R3},
{R4, R4, R4, R2, R3, R3, R3, R3, R3},
{R4, R4, R4, R2, R2, R3, R3, R3, R3},
{R4, R4, R4, R2, R2, R2, R3, R3, R3},
{R4, R4, R4, R2, R2, R2, R2, R3, R3},
{R4, R4, R4, R2, R2, R2, R2, R2, R1},
{R4, R4, R4, R2, R2, R2, R2, R2, R1},
{R4, R4, R4, R2, R2, R2, R2, R2, R1},
{R4, R4, R4, R2, R2, R2, R2, R2, R1},
{R4, R4, R4, R2, R2, R2, R2, R2, R1},
{R5, R4, R4, R2, R2, R2, R2, R1, R1},
{R5, R4, R5, R2, R2, R2, R2, R1, R1},
{R5, R5, R5, R2, R2, R2, R2, R1, R1},
{R5, R5, R5, R2, R2, R2, R1, R1, R1},
{R5, R5, R5, R2, R1, R2, R1, R1, R1},
{R5, R5, R5, R2, R1, R2, R1, R1, R1},
{R5, R5, R5, R2, R1, R2, R1, R1, R1},
{R5, R5, R5, R2, R1, R1, R1, R1, R1},
{R5, R5, R5, R2, R1, R1, R1, R1, R1},
{R5, R5, R5, R2, R1, R1, R1, R1, R1},
{R5, R5, R5, R2, R1, R1, R1, R1, R1},
{R5, R5, R5, R2, R1, R1, R1, R1, R1},
{R5, R5, R5, R2, R1, R1, R1, R1, R1}
};
#ifdef TONEMATRIX
static float rtapers[OSC_LIMIT][9] = {
{100.0, 34.0, 50.0, 34.0, 10.0, 10.0, 15.0, 24.0, 24.0},
{100.0, 34.0, 50.0, 34.0, 10.0, 10.0, 15.0, 24.0, 24.0},
{100.0, 34.0, 50.0, 34.0, 10.0, 10.0, 15.0, 24.0, 24.0},
{100.0, 34.0, 50.0, 34.0, 10.0, 10.0, 15.0, 24.0, 24.0},
{100.0, 34.0, 50.0, 34.0, 10.0, 10.0, 15.0, 24.0, 24.0},
{100.0, 34.0, 50.0, 34.0, 10.0, 10.0, 15.0, 24.0, 24.0},
{100.0, 34.0, 50.0, 34.0, 10.0, 10.0, 15.0, 24.0, 24.0},
{100.0, 34.0, 50.0, 34.0, 10.0, 10.0, 15.0, 24.0, 24.0},
{100.0, 34.0, 50.0, 34.0, 10.0, 10.0, 15.0, 24.0, 24.0},
{100.0, 34.0, 50.0, 34.0, 10.0, 10.0, 15.0, 24.0, 24.0},
{50.0, 34.0, 50.0, 34.0, 10.0, 10.0, 15.0, 24.0, 24.0},
{50.0, 34.0, 50.0, 34.0, 10.0, 15.0, 15.0, 24.0, 24.0},
{50.0, 34.0, 50.0, 34.0, 15.0, 15.0, 15.0, 24.0, 24.0},
{50.0, 34.0, 50.0, 24.0, 15.0, 15.0, 15.0, 24.0, 24.0},
{50.0, 24.0, 50.0, 24.0, 15.0, 15.0, 15.0, 24.0, 24.0},
{50.0, 24.0, 34.0, 24.0, 15.0, 15.0, 15.0, 24.0, 24.0},
{34.0, 24.0, 34.0, 24.0, 15.0, 15.0, 15.0, 24.0, 24.0},
{34.0, 24.0, 34.0, 24.0, 15.0, 15.0, 15.0, 24.0, 24.0},
{34.0, 24.0, 34.0, 24.0, 15.0, 15.0, 24.0, 24.0, 24.0},
{34.0, 24.0, 34.0, 24.0, 15.0, 15.0, 24.0, 24.0, 24.0},
{34.0, 24.0, 34.0, 24.0, 24.0, 24.0, 24.0, 24.0, 24.0},
{34.0, 24.0, 34.0, 24.0, 24.0, 24.0, 24.0, 24.0, 24.0},
{34.0, 24.0, 34.0, 24.0, 24.0, 24.0, 24.0, 24.0, 24.0},
{34.0, 24.0, 24.0, 24.0, 24.0, 24.0, 24.0, 24.0, 24.0},
{24.0, 24.0, 24.0, 24.0, 24.0, 24.0, 24.0, 24.0, 24.0},
{24.0, 24.0, 24.0, 24.0, 24.0, 24.0, 24.0, 24.0, 24.0},
{24.0, 24.0, 24.0, 24.0, 24.0, 24.0, 24.0, 24.0, 24.0},
{24.0, 24.0, 24.0, 24.0, 24.0, 24.0, 24.0, 24.0, 24.0},
{24.0, 24.0, 24.0, 24.0, 24.0, 24.0, 24.0, 24.0, 24.0},
{24.0, 24.0, 24.0, 24.0, 24.0, 24.0, 24.0, 24.0, 24.0},
{24.0, 24.0, 24.0, 24.0, 24.0, 24.0, 24.0, 24.0, 24.0},
{24.0, 24.0, 24.0, 24.0, 24.0, 24.0, 24.0, 24.0, 24.0},
{24.0, 24.0, 24.0, 24.0, 24.0, 24.0, 24.0, 24.0, 24.0},
{24.0, 24.0, 24.0, 24.0, 24.0, 24.0, 24.0, 24.0, 24.0},
{24.0, 24.0, 24.0, 24.0, 24.0, 24.0, 24.0, 24.0, 24.0},
{24.0, 24.0, 24.0, 24.0, 24.0, 24.0, 24.0, 24.0, 24.0},
{15.0, 24.0, 24.0, 24.0, 24.0, 24.0, 24.0, 24.0, 24.0},
{15.0, 24.0, 15.0, 24.0, 24.0, 24.0, 24.0, 24.0, 24.0},
{15.0, 15.0, 15.0, 24.0, 24.0, 24.0, 24.0, 24.0, 24.0},
{15.0, 15.0, 15.0, 34.0, 24.0, 24.0, 24.0, 24.0, 24.0},
{15.0, 15.0, 15.0, 34.0, 34.0, 24.0, 24.0, 24.0, 24.0},
{15.0, 15.0, 15.0, 34.0, 34.0, 34.0, 24.0, 24.0, 24.0},
{15.0, 15.0, 15.0, 34.0, 34.0, 34.0, 34.0, 24.0, 24.0},
{15.0, 15.0, 15.0, 34.0, 34.0, 34.0, 34.0, 34.0, 50.0},
{15.0, 15.0, 15.0, 34.0, 34.0, 34.0, 34.0, 34.0, 50.0},
{15.0, 15.0, 15.0, 34.0, 34.0, 34.0, 34.0, 34.0, 50.0},
{15.0, 15.0, 15.0, 34.0, 34.0, 34.0, 34.0, 34.0, 50.0},
{15.0, 15.0, 15.0, 34.0, 34.0, 34.0, 34.0, 34.0, 50.0},
{10.0, 15.0, 15.0, 34.0, 34.0, 34.0, 34.0, 50.0, 50.0},
{10.0, 15.0, 10.0, 34.0, 34.0, 34.0, 34.0, 50.0, 50.0},
{10.0, 10.0, 10.0, 34.0, 34.0, 34.0, 34.0, 50.0, 50.0},
{10.0, 10.0, 10.0, 34.0, 34.0, 34.0, 50.0, 50.0, 50.0},
{10.0, 10.0, 10.0, 34.0, 50.0, 34.0, 50.0, 50.0, 50.0},
{10.0, 10.0, 10.0, 34.0, 50.0, 34.0, 50.0, 50.0, 50.0},
{10.0, 10.0, 10.0, 34.0, 50.0, 34.0, 50.0, 50.0, 50.0},
{10.0, 10.0, 10.0, 34.0, 50.0, 50.0, 50.0, 50.0, 50.0},
{10.0, 10.0, 10.0, 34.0, 50.0, 50.0, 50.0, 50.0, 50.0},
{10.0, 10.0, 10.0, 34.0, 50.0, 50.0, 50.0, 50.0, 50.0},
{10.0, 10.0, 10.0, 34.0, 50.0, 50.0, 50.0, 50.0, 50.0},
{10.0, 10.0, 10.0, 34.0, 50.0, 50.0, 50.0, 50.0, 50.0},
{10.0, 10.0, 10.0, 34.0, 50.0, 50.0, 50.0, 50.0, 50.0}
};
#endif
static float wheeltemplates[2][OSC_LIMIT][WAVE_SIZE];
static float *tonewheel[OSC_LIMIT];
static int *wheelnumbers = &wi[36];
static float toneindeces[OSC_LIMIT];
#define NORMAL 0
#define BRIGHT 1
static float toneEQ[2][OSC_LIMIT];
static float busEQ[2][BUS_COUNT];
static float damping[2][OSC_LIMIT];
static float tonegains[OSC_LIMIT];
/*
* Crosstalk defaults.
*/
#define XT_COUNT 9
/* Compartment members: */
#define XT_NEAR_1 0
#define XT_NEAR_2 1
#define XT_FAR_1 2
#define XT_FAR_2 3
/* Drawbar busses */
#define XT_DRAWBAR 4
/* Filter adjacencies */
#define XT_FILT_1 5
#define XT_FILT_2 6
#define XT_FILT_3 7
#define XT_FILT_4 8
/*
* The following are for the different drawbar parameters. I would like to
* bring them into a single structure and will start with the structures for
* the redefined keyclick code - nine busses, independent click and harmonic
* startpoints.
*/
static float defct[2][XT_COUNT]
= {{0.03, 0.05, 0.04, 0.2, 0.02, 0.07, 0.06, 0.03, 0.02},
{0.05, 0.06, 0.02, 0.5, 0.02, 0.09, 0.07, 0.08, 0.6}};
static float defbg[9] =
{0.0, 0.125, 0.25, 0.375, 0.5, 0.625, 0.750, 0.875, 1.0};
/*
* These define the sample delays before the given bus makes contact, gives
* a key click and starts mixing its harmonic.
*/
static struct DrawBar {
float delay[2][BUS_COUNT];
int delays[2][BUS_COUNT];
float gain[2][BUS_COUNT];
float invert[2][BUS_COUNT];
float wave[2][BUS_COUNT];
int pulse[2][BUS_COUNT];
int tdelay[BUS_COUNT][OSC_LIMIT]; /* Target delay depending on velocity */
int current[BUS_COUNT][OSC_LIMIT]; /* index into click buffer */
int offset[OSC_LIMIT]; /* Current offset of note */
} drawbars;
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