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/*
* Copyright (C) 2017-2018 Robin Gareus <robin@gareus.org>
* Copyright (C) 2017 Paul Davis <paul@linuxaudiosystems.com>
*
* 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 __ardour_disk_writer_h__
#define __ardour_disk_writer_h__
#include <list>
#include <vector>
#include "pbd/i18n.h"
#include "ardour/disk_io.h"
#include "ardour/midi_buffer.h"
namespace ARDOUR
{
class AudioFileSource;
class SMFSource;
class MidiSource;
class LIBARDOUR_API DiskWriter : public DiskIOProcessor
{
public:
DiskWriter (Session&, std::string const& name,
DiskIOProcessor::Flag f = DiskIOProcessor::Flag (0));
~DiskWriter ();
bool set_name (std::string const& str);
std::string display_name () const { return std::string (_ ("recorder")); }
bool recordable () const { return _flags & Recordable; }
static samplecnt_t chunk_samples () { return _chunk_samples; }
static samplecnt_t default_chunk_samples ();
static void set_chunk_samples (samplecnt_t n) { _chunk_samples = n; }
void run (BufferSet& /*bufs*/, samplepos_t /*start_sample*/, samplepos_t /*end_sample*/,
double speed, pframes_t /*nframes*/, bool /*result_required*/);
void non_realtime_locate (samplepos_t);
void realtime_handle_transport_stopped ();
int set_state (const XMLNode&, int version);
bool set_write_source_name (const std::string& str);
std::string write_source_name () const {
if (_write_source_name.empty ()) {
return name ();
} else {
return _write_source_name;
}
}
boost::shared_ptr<AudioFileSource> audio_write_source (uint32_t n = 0) {
boost::shared_ptr<ChannelList> c = channels.reader ();
if (n < c->size ()) {
return (*c)[n]->write_source;
}
return boost::shared_ptr<AudioFileSource> ();
}
boost::shared_ptr<SMFSource> midi_write_source () const { return _midi_write_source; }
std::string steal_write_source_name ();
int use_new_write_source (DataType, uint32_t n = 0);
void reset_write_sources (bool, bool force = false);
AlignStyle alignment_style () const { return _alignment_style; }
void set_align_style (AlignStyle, bool force = false);
PBD::Signal0<void> AlignmentStyleChanged;
bool configure_io (ChanCount in, ChanCount out);
std::list<boost::shared_ptr<Source> >& last_capture_sources () { return _last_capture_sources; }
bool record_enabled () const { return g_atomic_int_get (const_cast<gint*> (&_record_enabled)); }
bool record_safe () const { return g_atomic_int_get (const_cast<gint*> (&_record_safe)); }
void set_record_enabled (bool yn);
void set_record_safe (bool yn);
/** @return Start position of currently-running capture (in session samples) */
samplepos_t current_capture_start () const { return _capture_start_sample; }
samplepos_t current_capture_end () const { return _capture_start_sample + _capture_captured; }
samplepos_t get_capture_start_sample (uint32_t n = 0) const;
samplecnt_t get_captured_samples (uint32_t n = 0) const;
float buffer_load () const;
int seek (samplepos_t sample, bool complete_refill);
static PBD::Signal0<void> Overrun;
void set_note_mode (NoteMode m);
/** Emitted when some MIDI data has been received for recording.
* Parameter is the source that it is destined for.
* A caller can get a copy of the data with get_gui_feed_buffer ()
*/
PBD::Signal1<void, boost::weak_ptr<MidiSource> > DataRecorded;
PBD::Signal0<void> RecordEnableChanged;
PBD::Signal0<void> RecordSafeChanged;
void transport_looped (samplepos_t transport_sample);
void transport_stopped_wallclock (struct tm&, time_t, bool abort);
void adjust_buffering ();
boost::shared_ptr<MidiBuffer> get_gui_feed_buffer () const;
protected:
friend class Track;
struct WriterChannelInfo : public DiskIOProcessor::ChannelInfo {
WriterChannelInfo (samplecnt_t buffer_size)
: DiskIOProcessor::ChannelInfo (buffer_size)
{
resize (buffer_size);
}
void resize (samplecnt_t);
};
virtual XMLNode& state ();
int use_playlist (DataType, boost::shared_ptr<Playlist>);
int do_flush (RunContext context, bool force = false);
void configuration_changed ();
private:
static samplecnt_t _chunk_samples;
void prepare_record_status (samplepos_t /*capture_start_sample*/);
int add_channel_to (boost::shared_ptr<ChannelList>, uint32_t how_many);
void engage_record_enable ();
void disengage_record_enable ();
void engage_record_safe ();
void disengage_record_safe ();
bool prep_record_enable ();
bool prep_record_disable ();
void calculate_record_range (Evoral::OverlapType ot, samplepos_t transport_sample,
samplecnt_t nframes, samplecnt_t& rec_nframes,
samplecnt_t& rec_offset);
void check_record_status (samplepos_t transport_sample, double speed, bool can_record);
void finish_capture (boost::shared_ptr<ChannelList> c);
void loop (samplepos_t);
CaptureInfos capture_info;
mutable Glib::Threads::Mutex capture_info_lock;
gint _record_enabled;
gint _record_safe;
samplepos_t _capture_start_sample;
samplecnt_t _capture_captured;
bool _was_recording;
samplepos_t _first_recordable_sample;
samplepos_t _last_recordable_sample;
int _last_possibly_recording;
AlignStyle _alignment_style;
std::string _write_source_name;
NoteMode _note_mode;
volatile gint _samples_pending_write;
volatile gint _num_captured_loops;
samplepos_t _accumulated_capture_offset;
bool _transport_looped;
samplepos_t _transport_loop_sample;
boost::shared_ptr<SMFSource> _midi_write_source;
std::list<boost::shared_ptr<Source> > _last_capture_sources;
std::vector<boost::shared_ptr<AudioFileSource> > capturing_sources;
/** A buffer that we use to put newly-arrived MIDI data in for
* the GUI to read (so that it can update itself).
*/
MidiBuffer _gui_feed_buffer;
mutable Glib::Threads::Mutex _gui_feed_buffer_mutex;
};
} // namespace
#endif /* __ardour_disk_writer_h__ */
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