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/*************************************************************************
This file is part of tone-generator
Copyright (C) 2010 Nokia Corporation.
This library is free software; you can redistribute
it and/or modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation
version 2.1 of the License.
This library 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
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with this library; if not, write to the Free Software
Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301
USA.
*************************************************************************/
#define _GNU_SOURCE
#include <math.h>
#include <stdlib.h>
#include <string.h>
#include <errno.h>
#include <log/log.h>
#include <trace/trace.h>
#include "stream.h"
#include "tone.h"
#include "note.h"
#define LOG_ERROR(f, args...) log_error(logctx, f, ##args)
#define LOG_INFO(f, args...) log_error(logctx, f, ##args)
#define LOG_WARNING(f, args...) log_error(logctx, f, ##args)
#define TRACE(f, args...) trace_write(trctx, trflags, trkeys, f, ##args)
static char *note_stream = STREAM_NOTES;
static uint32_t frequencies[OCTAVE_DIM][NOTE_DIM] = {
/* Ab A B H C Db D Eb E F Gb G*/
{0, 0, 220, 233, 247, 262, 277, 294, 311, 338, 349, 370, 392},
{0, 416, 440, 466, 494, 523, 554, 587, 622, 659, 698, 740, 784},
{0, 831, 880, 932, 988, 1047, 1109, 1175, 1245, 1319, 1397, 1488, 1568},
{0,1661, 1760, 1865, 1976, 2093, 2217, 2349, 2489, 2637, 2794, 2960, 3136},
{0,3322, 3520, 3729, 3951, 4186, 4434, 4698, 4978, 5274, 5588, 5920, 6272},
{0,6644, 7040, 7458, 7902, 8372, 8870, 9396, 9956,10548,11176,11840,12544}
};
static int types[] = {
TONE_NOTE_0,
};
static uint32_t play_percent[STYLE_DIM] = {
30, /* Staccato */
60, /* Natural */
100 /* Continous */
};
int note_init(int argc, char **argv)
{
(void)argc;
(void)argv;
return 0;
}
void note_play(struct ausrv *ausrv, int note, int scale, int beat,
int style, int fract, uint32_t vol, int idx)
{
struct stream *stream = stream_find(ausrv, note_stream);
int octave = scale - 3;
int type;
uint32_t freq;
uint32_t period;
uint32_t play;
uint32_t dur;
if (note < 0 || note >= NOTE_DIM ||
octave < 0 || octave >= OCTAVE_DIM ||
beat < 0 || beat >= 200 ||
style < 0 || style >= STYLE_DIM ||
fract < 1 || fract > 32 ||
vol < 1 || vol > 100 ||
idx < 0 || idx >= (int)(sizeof(types)/sizeof(types[0]))) {
return;
}
if (stream == NULL) {
stream = stream_create(ausrv, note_stream, NULL, 0,
tone_write_callback,
tone_destroy_callback,
NULL,
NULL);
if (stream == NULL) {
LOG_ERROR("%s(): Can't create stream", __FUNCTION__);
return;
}
}
type = types[idx];
freq = frequencies[octave][note];
dur = 60000000 / (beat * fract);
period = dur;
play = (period * play_percent[style]) / 100;
TRACE("%s(): freq %u period %u", __FUNCTION__, freq, period);
tone_create(stream, type, freq, vol, period, play, 0, dur);
}
/*
* Local Variables:
* c-basic-offset: 4
* indent-tabs-mode: nil
* End:
*/
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