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/*
Copyright (C) 2009-2016 Paul Davis
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., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#ifndef __ardour_disk_writer_h__
#define __ardour_disk_writer_h__
#include <list>
#include "ardour/disk_io.h"
namespace ARDOUR
{
class LIBARDOUR_API DiskWriter : public DiskIOProcessor
{
public:
DiskWriter (Session&, std::string const & name, DiskIOProcessor::Flag f = DiskIOProcessor::Flag (0));
virtual bool set_write_source_name (const std::string& str);
static framecnt_t chunk_frames() { return _chunk_frames; }
static framecnt_t default_chunk_frames ();
static void set_chunk_frames (framecnt_t n) { _chunk_frames = n; }
void run (BufferSet& /*bufs*/, framepos_t /*start_frame*/, framepos_t /*end_frame*/, double speed, pframes_t /*nframes*/, bool /*result_required*/);
void silence (framecnt_t /*nframes*/, framepos_t /*start_frame*/);
bool configure_io (ChanCount in, ChanCount out);
bool can_support_io_configuration (const ChanCount& in, ChanCount& out) = 0;
ChanCount input_streams () const;
ChanCount output_streams() const;
void realtime_handle_transport_stopped ();
void realtime_locate ();
virtual XMLNode& state (bool full);
int set_state (const XMLNode&, int version);
virtual int use_new_write_source (uint32_t n=0) = 0;
std::string write_source_name () const {
if (_write_source_name.empty()) {
return name();
} else {
return _write_source_name;
}
}
virtual std::string steal_write_source_name () { return std::string(); }
AlignStyle alignment_style() const { return _alignment_style; }
AlignChoice alignment_choice() const { return _alignment_choice; }
void set_align_style (AlignStyle, bool force=false);
void set_align_choice (AlignChoice a, bool force=false);
PBD::Signal0<void> AlignmentStyleChanged;
void set_input_latency (framecnt_t);
framecnt_t input_latency () const { return _input_latency; }
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)); }
virtual void set_record_enabled (bool yn) = 0;
virtual void set_record_safe (bool yn) = 0;
bool destructive() const { return _flags & Destructive; }
virtual int set_destructive (bool /*yn*/) { return -1; }
virtual int set_non_layered (bool /*yn*/) { return -1; }
virtual bool can_become_destructive (bool& /*requires_bounce*/) const { return false; }
/** @return Start position of currently-running capture (in session frames) */
framepos_t current_capture_start() const { return capture_start_frame; }
framepos_t current_capture_end() const { return capture_start_frame + capture_captured; }
framepos_t get_capture_start_frame (uint32_t n = 0) const;
framecnt_t get_captured_frames (uint32_t n = 0) const;
float buffer_load() const;
virtual void request_input_monitoring (bool) {}
virtual void ensure_input_monitoring (bool) {}
framecnt_t capture_offset() const { return _capture_offset; }
virtual void set_capture_offset ();
protected:
virtual int do_flush (RunContext context, bool force = false) = 0;
virtual void check_record_status (framepos_t transport_frame, bool can_record);
virtual void prepare_record_status (framepos_t /*capture_start_frame*/) {}
virtual void set_align_style_from_io() {}
virtual void setup_destructive_playlist () {}
virtual void use_destructive_playlist () {}
virtual void prepare_to_stop (framepos_t transport_pos, framepos_t audible_frame);
void engage_record_enable ();
void disengage_record_enable ();
void engage_record_safe ();
void disengage_record_safe ();
virtual bool prep_record_enable () = 0;
virtual bool prep_record_disable () = 0;
void calculate_record_range (
Evoral::OverlapType ot, framepos_t transport_frame, framecnt_t nframes,
framecnt_t& rec_nframes, framecnt_t& rec_offset
);
static framecnt_t disk_read_chunk_frames;
static framecnt_t disk_write_chunk_frames;
struct CaptureInfo {
framepos_t start;
framecnt_t frames;
};
std::vector<CaptureInfo*> capture_info;
mutable Glib::Threads::Mutex capture_info_lock;
private:
enum TransitionType {
CaptureStart = 0,
CaptureEnd
};
struct CaptureTransition {
TransitionType type;
framepos_t capture_val; ///< The start or end file frame position
};
framecnt_t _input_latency;
gint _record_enabled;
gint _record_safe;
framepos_t capture_start_frame;
framecnt_t capture_captured;
bool was_recording;
framecnt_t adjust_capture_position;
framecnt_t _capture_offset;
framepos_t first_recordable_frame;
framepos_t last_recordable_frame;
int last_possibly_recording;
AlignStyle _alignment_style;
AlignChoice _alignment_choice;
std::string _write_source_name;
std::list<boost::shared_ptr<Source> > _last_capture_sources;
static framecnt_t _chunk_frames;
};
} // namespace
#endif /* __ardour_disk_writer_h__ */
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