209 lines
6.3 KiB
C++
209 lines
6.3 KiB
C++
/*
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* Copyright (C) 2017-2018 Robin Gareus <robin@gareus.org>
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* Copyright (C) 2017 Paul Davis <paul@linuxaudiosystems.com>
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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 __ardour_disk_writer_h__
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#define __ardour_disk_writer_h__
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#include <atomic>
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#include <list>
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#include <vector>
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#include <boost/optional.hpp>
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#include "ardour/disk_io.h"
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#include "ardour/midi_buffer.h"
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namespace ARDOUR
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{
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class AudioFileSource;
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class SMFSource;
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class MidiSource;
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class LIBARDOUR_API DiskWriter : public DiskIOProcessor
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{
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public:
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DiskWriter (Session&, Track&, std::string const& name,
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DiskIOProcessor::Flag f = DiskIOProcessor::Flag (0));
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~DiskWriter ();
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bool set_name (std::string const& str);
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std::string display_name () const;
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bool recordable () const { return _flags & Recordable; }
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static samplecnt_t chunk_samples () { return _chunk_samples; }
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static samplecnt_t default_chunk_samples ();
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static void set_chunk_samples (samplecnt_t n) { _chunk_samples = n; }
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void run (BufferSet& /*bufs*/, samplepos_t /*start_sample*/, samplepos_t /*end_sample*/,
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double speed, pframes_t /*nframes*/, bool /*result_required*/);
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void non_realtime_locate (samplepos_t);
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void realtime_handle_transport_stopped ();
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int set_state (const XMLNode&, int version);
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bool set_write_source_name (const std::string& str);
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std::string write_source_name () const;
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std::shared_ptr<AudioFileSource> audio_write_source (uint32_t n = 0) {
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std::shared_ptr<ChannelList const> c = channels.reader ();
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if (n < c->size ()) {
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return (*c)[n]->write_source;
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}
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return std::shared_ptr<AudioFileSource> ();
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}
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std::shared_ptr<SMFSource> midi_write_source () const { return _midi_write_source; }
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std::string steal_write_source_name ();
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int use_new_write_source (DataType, uint32_t n = 0);
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void reset_write_sources (bool, bool force = false);
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AlignStyle alignment_style () const { return _alignment_style; }
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void set_align_style (AlignStyle, bool force = false);
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PBD::Signal0<void> AlignmentStyleChanged;
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bool configure_io (ChanCount in, ChanCount out);
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std::list<std::shared_ptr<Source> >& last_capture_sources () { return _last_capture_sources; }
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bool record_enabled () const { return _record_enabled.load(); }
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bool record_safe () const { return _record_safe.load(); }
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void set_record_enabled (bool yn);
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void set_record_safe (bool yn);
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void mark_capture_xrun ();
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/** @return Start position of currently-running capture (in session samples) */
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samplepos_t current_capture_start () const;
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samplepos_t current_capture_end () const;
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samplepos_t get_capture_start_sample (uint32_t n = 0) const;
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samplecnt_t get_captured_samples (uint32_t n = 0) const;
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float buffer_load () const;
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int seek (samplepos_t sample, bool complete_refill);
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static PBD::Signal0<void> Overrun;
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void set_note_mode (NoteMode m);
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/** Emitted when some MIDI data has been received for recording.
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* Parameter is the source that it is destined for.
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* A caller can get a copy of the data with get_gui_feed_buffer ()
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*/
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PBD::Signal1<void, std::weak_ptr<MidiSource> > DataRecorded;
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PBD::Signal0<void> RecordEnableChanged;
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PBD::Signal0<void> RecordSafeChanged;
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void transport_looped (samplepos_t transport_sample);
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void transport_stopped_wallclock (struct tm&, time_t, bool abort);
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void adjust_buffering ();
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std::shared_ptr<MidiBuffer> get_gui_feed_buffer () const;
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protected:
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friend class Track;
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struct WriterChannelInfo : public DiskIOProcessor::ChannelInfo {
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WriterChannelInfo (samplecnt_t buffer_size)
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: DiskIOProcessor::ChannelInfo (buffer_size)
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{
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resize (buffer_size);
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}
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void resize (samplecnt_t);
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};
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virtual XMLNode& state () const;
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int use_playlist (DataType, std::shared_ptr<Playlist>);
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int do_flush (RunContext context, bool force = false);
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void configuration_changed ();
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private:
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static samplecnt_t _chunk_samples;
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int add_channel_to (std::shared_ptr<ChannelList>, uint32_t how_many);
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void engage_record_enable ();
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void disengage_record_enable ();
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void engage_record_safe ();
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void disengage_record_safe ();
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bool prep_record_enable ();
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bool prep_record_disable ();
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void calculate_record_range (Temporal::OverlapType ot, samplepos_t transport_sample,
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samplecnt_t nframes, samplecnt_t& rec_nframes,
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samplecnt_t& rec_offset);
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void check_record_status (samplepos_t transport_sample, double speed, bool can_record);
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void finish_capture (std::shared_ptr<ChannelList const> c);
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void reset_capture ();
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void loop (samplepos_t);
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CaptureInfos capture_info;
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mutable Glib::Threads::Mutex capture_info_lock;
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boost::optional<samplepos_t> _capture_start_sample;
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samplecnt_t _capture_captured;
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bool _was_recording;
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bool _xrun_flag;
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XrunPositions _xruns;
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samplepos_t _first_recordable_sample;
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samplepos_t _last_recordable_sample;
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int _last_possibly_recording;
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AlignStyle _alignment_style;
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std::string _write_source_name;
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NoteMode _note_mode;
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samplepos_t _accumulated_capture_offset;
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bool _transport_looped;
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samplepos_t _transport_loop_sample;
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std::atomic<int> _record_enabled;
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std::atomic<int> _record_safe;
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std::atomic<int> _samples_pending_write;
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std::atomic<int> _num_captured_loops;
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std::shared_ptr<SMFSource> _midi_write_source;
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std::list<std::shared_ptr<Source> > _last_capture_sources;
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std::vector<std::shared_ptr<AudioFileSource> > capturing_sources;
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/** A buffer that we use to put newly-arrived MIDI data in for
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* the GUI to read (so that it can update itself).
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*/
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MidiBuffer _gui_feed_buffer;
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mutable Glib::Threads::Mutex _gui_feed_buffer_mutex;
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};
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} // namespace
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#endif /* __ardour_disk_writer_h__ */
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