aboutsummaryrefslogtreecommitdiffstats
path: root/src/dtmf_scheduler.c
blob: 4f64eb039e7aedcfdb98b537d5df24f17b792ecd (plain)
1
2
3
4
5
6
7
8
9
10
11
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
/*
 * (C) 2012-2013 by Holger Hans Peter Freyther
 * (C) 2012-2013 by On-Waves
 * All Rights Reserved
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Affero 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 Affero General Public License for more details.
 *
 * You should have received a copy of the GNU Affero General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 *
 */

#include "dtmf_scheduler.h"
#include <string.h>
#include <stdio.h>

void dtmf_state_init(struct dtmf_state *state)
{
	memset(state, 0, sizeof(*state));
}

int dtmf_state_add(struct dtmf_state *state, char tone)
{
	/* we would override the head */
	if (state->size == sizeof(state->tones))
		return -1;

	state->tones[state->size++] = tone;
	return 0;
}

unsigned int dtmf_state_get_pending(struct dtmf_state *state, char *tones)
{
	int pos;

	for (pos = 0; pos < state->size; ++pos)
		tones[pos] = state->tones[pos];

	/* consume everything up to the tail */
	state->size = 0;

	/* remember that we play things */
	if (pos > 0)
		state->playing = 1;
	tones[pos] = '\0';
	return pos;
}

void dtmf_state_played(struct dtmf_state *state)
{
	state->playing = 0;
}

unsigned int dtmf_tones_queued(struct dtmf_state *state)
{
	return state->size;
}