69 lines
1.7 KiB
C
69 lines
1.7 KiB
C
/*
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* (C) 2012-2013 by Holger Hans Peter Freyther
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* (C) 2012-2013 by On-Waves
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* All Rights Reserved
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Affero General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Affero General Public License for more details.
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*
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* You should have received a copy of the GNU Affero General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*
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*/
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#include "dtmf_scheduler.h"
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#include <string.h>
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#include <stdio.h>
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void dtmf_state_init(struct dtmf_state *state)
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{
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memset(state, 0, sizeof(*state));
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}
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int dtmf_state_add(struct dtmf_state *state, char tone)
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{
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/* we would override the head */
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if (state->size == sizeof(state->tones))
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return -1;
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/* avoid someone adding a NULL byte */
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if (tone == 0)
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return -2;
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state->tones[state->size++] = tone;
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return 0;
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}
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unsigned int dtmf_state_get_pending(struct dtmf_state *state, char *tones)
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{
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int pos;
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for (pos = 0; pos < state->size; ++pos)
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tones[pos] = state->tones[pos];
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/* consume everything up to the tail */
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state->size = 0;
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/* remember that we play things */
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if (pos > 0)
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state->playing = 1;
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tones[pos] = '\0';
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return pos;
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}
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void dtmf_state_played(struct dtmf_state *state)
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{
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state->playing = 0;
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}
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unsigned int dtmf_tones_queued(struct dtmf_state *state)
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{
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return state->size;
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}
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