// This file is part of SmallBASIC
//
// SmallBASIC RTL - SOUND
//
// This program is distributed under the terms of the GPL v2.0 or later
// Download the GNU Public License (GPL) from www.gnu.org
//
// Copyright(C) 2000 Nicholas Christopoulos
#include "common/sys.h"
#include "common/str.h"
#include "common/kw.h"
#include "common/panic.h"
#include "common/var.h"
#include "common/blib.h"
#include "common/pproc.h"
static int tones[] = {
//c c# d d# e f f# g g# a a# b
65, 69, 73, 78, 82, 87, 93, 98, 104, 110, 116, 123, 131, 139, 147, 156, 165, 175, 185, 196, 208, 220, 233,
247, 262, 277, 294, 311, 330, 349, 370, 392, 415, 440, 466, 494, 523, 554, 587, 622, 659, 698, 740, 784,
831, 880, 932, 988, 1046, 1109, 1175, 1245, 1318, 1397, 1480, 1568, 1661, 1760, 1865, 1976, 2093, 2217,
2349, 2489, 2637, 2794, 2960, 3136, 3322, 3520, 3729, 3951, 4186, 4435, 4699, 4978, 5274, 5587, 5919,
6271, 6645, 7040, 7459, 7902, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, };
static int O = 2, bg = 0, vol = 75;
static int period, duration, pitch = 440;
static double L = 4.0, T = 240.0, M = 1.0, TM = 1.0;
//
// BEEP
//
void cmd_beep() {
dev_beep();
}
//
// SOUND frq, dur [, vol] [BG]
//
void cmd_sound() {
int frq, ms = 250, vol = 100;
int bg = 0;
frq = par_getint();
if (!prog_error) {
par_getcomma();
if (!prog_error) {
ms = par_getint();
if (!prog_error) {
if (code_peek() == kwTYPE_SEP) {
par_getcomma();
if (!prog_error)
vol = par_getint();
}
if (code_peek() == kwBACKG) {
code_skipnext();
bg = 1;
}
if (!prog_error)
dev_sound(frq, ms, vol, bg);
}
}
}
}
/*
*/
void cmd_nosound() {
dev_clear_sound_queue();
}
//
void cmd_play_reset() {
O = 2;
bg = 0;
vol = 75;
period = 0;
duration = 0;
pitch = 440;
L = 4.0;
T = 240.0;
M = 1.0;
TM = 1.0;
}
//
// PLAY str-cmds
//
#define CPLERR(c,a) { if ( (c) ) { rt_raise((a)); tmp_free(str); return; } }
void cmd_play() {
char *p;
var_t var;
int n = 0;
int calc_time_f = 1;
char *str, *s;
double TmpL;
par_getstr(&var);
if (prog_error)
return;
str = (char *) tmp_alloc(var.v.p.size + 1);
// copy without spaces
p = (char *) var.v.p.ptr;
s = str;
while (*p) {
if (*p > 32)
*s++ = to_upper(*p);
p++;
}
*s = '\0';
v_free(&var);
// run
p = str;
while (*p) {
//
if (dev_events(0) < 0)
break;
//
if (calc_time_f) {
period = (4.0 / L) * (60000 / T) * TM;
duration = M * period;
calc_time_f = 0;
}
switch (*p) {
/*
* Volume
*/
case 'V':
n = 0;
while (is_digit(*(p + 1))) {
p++;
n = (n * 10) + (*p - '0');
}
CPLERR((n < 0 || n > 100), "PLAY: V0-100");
vol = n;
break;
/*
* clear queue
*/
case 'Q':
dev_clear_sound_queue();
break;
/*
* Octaves
*/
case '<':
if (O > 0)
O--;
break;
case '>':
if (O < 6)
O++;
break;
case 'O':
O = -1;
if (is_digit(*(p + 1))) {
p++;
O = *p - '0';
}
CPLERR((O < 0 || O > 6), "PLAY: O0-6");
break;
/*
* Time
*/
case 'L':
n = 0;
while (is_digit(*(p + 1))) {
p++;
n = (n * 10) + (*p - '0');
}
CPLERR((n < 1 || n > 64), "PLAY: L1-64");
L = n;
calc_time_f = 1;
break;
case 'T':
n = 0;
while (is_digit(*(p + 1))) {
p++;
n = (n * 10) + (*p - '0');
}
CPLERR((n < 45 || n > 255), "PLAY: T32-255");
T = n;
calc_time_f = 1;
break;
case 'M':
p++;
switch (*p) {
case 'S':
M = 0.5;
break;
case 'N':
M = 3.0 / 4.0;
break;
case 'L':
M = 1.0;
break;
case 'F':
bg = 0;
break;
case 'B':
bg = 1;
break;
default:
rt_raise("PLAY: M%c UNSUPPORTED", *p);
v_free(&var);
}
calc_time_f = 1;
break;
/*
* Pause
*/
case 'P':
n = 0;
while (is_digit(*(p + 1))) {
p++;
n = (n * 10) + (*p - '0');
}
// /
if (*(p + 1) == '.') {
p++;
TM = 1.5;
} else
TM = 1.0;
CPLERR((n < 1 || n > 64), "PLAY: P1-64");
period = (4.0 / n) * (60000 / T) * TM;
dev_sound(0, period, vol, bg);
calc_time_f = 1;
break;
/*
* Play N
*/
case 'N':
n = 0;
while (is_digit(*(p + 1))) {
p++;
n = (n * 10) + (*p - '0');
}
CPLERR((n < 0 || n > 84), "PLAY: N0-84");
if (n) {
// oct = n / 12;
// pitch = tones[n - oct * 12] * (1 << oct);
pitch = tones[n];
}
if (n == 0)
dev_sound(0, period, vol, bg);
else {
dev_sound(pitch, duration, vol, bg);
if (duration < period)
dev_sound(0, period - duration, vol, bg);
}
calc_time_f = 1;
break;
/*
* Play note
*/
case 'A':
case 'B':
case 'C':
case 'D':
case 'E':
case 'F':
case 'G':
switch (*p) {
case 'A':
n = 13;
break;
case 'B':
n = 15;
break;
case 'C':
n = 4;
break;
case 'D':
n = 6;
break;
case 'E':
n = 8;
break;
case 'F':
n = 9;
break;
case 'G':
n = 11;
break;
}
// /
if (*(p + 1) == '-' || *(p + 1) == '+' || *(p + 1) == '#') {
p++;
if (*p == '-')
n--;
else
n++;
}
// /
if (is_digit(*(p + 1))) {
TmpL = 0;
while (is_digit(*(p + 1))) {
p++;
TmpL = (TmpL * 10) + (*p - '0');
}
calc_time_f = 1;
} else
TmpL = L;
// /
if (*(p + 1) == '.') {
p++;
TM = 1.5;
} else
TM = 1.0;
period = (4.0 / TmpL) * (60000 / T) * TM;
duration = M * period;
// /
// pitch = tones[n] * (1 << O);
pitch = tones[(n - 4) + O * 12];
dev_sound(pitch, duration, vol, bg);
if (duration < period)
dev_sound(0, period - duration, vol, bg);
break;
default:
rt_raise("PLAY: '%c' UNSUPPORTED", *p);
tmp_free(str);
return;
}
// next
if (*p)
p++;
}
tmp_free(str);
}
#undef CPLERR
