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