2 libltc - en+decode linear timecode
4 Copyright (C) 2006-2012 Robin Gareus <robin@gareus.org>
6 This program is free software; you can redistribute it and/or modify
7 it under the terms of the GNU Lesser General Public License as
8 published by the Free Software Foundation, either version 3 of the
9 License, or (at your option) any later version.
11 This program is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU Lesser General Public License for more details.
16 You should have received a copy of the GNU Lesser General Public
17 License along with this library.
18 If not, see <http://www.gnu.org/licenses/>.
22 #ifndef SAMPLE_CENTER // also defined in encoder.h
23 #define SAMPLE_CENTER 128 // unsigned 8 bit.
32 unsigned char biphase_state;
33 unsigned char biphase_prev;
34 unsigned char snd_to_biphase_state;
35 int snd_to_biphase_cnt; ///< counts the samples in the current period
36 int snd_to_biphase_lmt; ///< specifies when a state-change is considered biphase-clock or 2*biphase-clock
37 double snd_to_biphase_period; ///< track length of a period - used to set snd_to_biphase_lmt
39 ltcsnd_sample_t snd_to_biphase_min;
40 ltcsnd_sample_t snd_to_biphase_max;
42 unsigned short decoder_sync_word;
46 ltc_off_t frame_start_off;
47 ltc_off_t frame_start_prev;
49 float biphase_tics[LTC_FRAME_BIT_COUNT];
54 void decode_ltc(LTCDecoder *d, ltcsnd_sample_t *sound, size_t size, ltc_off_t posinfo);