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/*
* Copyright (C) 2015-2019 Robin Gareus <robin@gareus.org>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#ifndef __libardour_ltc_file_reader_h__
#define __libardour_ltc_file_reader_h__
#include <vector>
#include <sndfile.h>
#include <ltc.h>
#include "ardour/libardour_visibility.h"
#include "ardour/types.h"
namespace ARDOUR {
class LIBARDOUR_API LTCReader
{
public:
LTCReader (int expected_apv, LTC_TV_STANDARD tv_standard = LTC_TV_FILM_24);
~LTCReader ();
void write (float const*, samplecnt_t n_samples, samplepos_t pos = -1);
void raw_write (ltcsnd_sample_t*, size_t, ltc_off_t);
samplepos_t read (uint32_t& hh, uint32_t& mm, uint32_t& ss, uint32_t& ff);
private:
LTCDecoder* _decoder;
samplecnt_t _position;
};
class LIBARDOUR_API LTCFileReader
{
public:
struct LTCMap {
double framepos_sec; // relative to start of file
double timecode_sec; // timecode
LTCMap (double p, double t) {
framepos_sec = p;
timecode_sec = t;
}
};
LTCFileReader (std::string path, double expected_fps, LTC_TV_STANDARD tv_standard = LTC_TV_FILM_24);
~LTCFileReader ();
uint32_t channels () const { return _info.channels; }
std::vector<LTCMap> read_ltc (uint32_t channel, uint32_t max_frames = 1);
private:
int open();
void close ();
std::string _path;
double _expected_fps;
LTC_TV_STANDARD _ltc_tv_standard;
SNDFILE* _sndfile;
SF_INFO _info;
LTCReader* _reader;
float* _interleaved_audio_buffer;
samplecnt_t _samples_read;
};
} // namespace ARDOUR
#endif /* __libardour_ltc_file_reader_h__ */
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