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/*
Copyright (C) 2006 Paul Davis
Author: David Robillard
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_smf_source_h__
#define __ardour_smf_source_h__
#include <cstdio>
#include <time.h>
#include "evoral/SMF.hpp"
#include "ardour/midi_source.h"
#include "ardour/file_source.h"
namespace Evoral { template<typename T> class Event; }
namespace ARDOUR {
template<typename T> class MidiRingBuffer;
/** Standard Midi File (Type 0) Source */
class SMFSource : public MidiSource, public FileSource, public Evoral::SMF {
public:
/** Constructor for existing external-to-session files */
SMFSource (Session& session, const std::string& path,
Source::Flag flags = Source::Flag(0));
/** Constructor for existing in-session files */
SMFSource (Session& session, const XMLNode&, bool must_exist = false);
virtual ~SMFSource ();
bool safe_file_extension (const std::string& path) const {
return safe_midi_file_extension(path);
}
bool set_name (const std::string& newname) { return (set_source_name(newname, false) == 0); }
void append_event_unlocked_beats (const Evoral::Event<Evoral::MusicalTime>& ev);
void append_event_unlocked_frames (const Evoral::Event<framepos_t>& ev, framepos_t source_start);
void mark_streaming_midi_write_started (NoteMode mode);
void mark_streaming_write_completed ();
XMLNode& get_state ();
int set_state (const XMLNode&, int version);
void load_model (bool lock=true, bool force_reload=false);
void destroy_model ();
void flush_midi ();
void ensure_disk_file ();
static void set_header_position_offset (framecnt_t offset, bool negative);
static bool safe_midi_file_extension (const std::string& path);
protected:
void set_path (const std::string& newpath);
private:
int open_for_write ();
framecnt_t read_unlocked (Evoral::EventSink<framepos_t>& dst,
framepos_t position,
framepos_t start,
framecnt_t cnt,
MidiStateTracker* tracker) const;
framecnt_t write_unlocked (MidiRingBuffer<framepos_t>& src,
framepos_t position,
framecnt_t cnt);
double _last_ev_time_beats;
framepos_t _last_ev_time_frames;
/** end time (start + duration) of last call to read_unlocked */
mutable framepos_t _smf_last_read_end;
/** time (in SMF ticks, 1 tick per _ppqn) of the last event read by read_unlocked */
mutable framepos_t _smf_last_read_time;
};
}; /* namespace ARDOUR */
#endif /* __ardour_smf_source_h__ */
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