| /* |
| * (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; |
| /* avoid someone adding a NULL byte */ |
| if (tone == 0) |
| return -2; |
| |
| 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; |
| } |