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/*
Copyright (C) 2000 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_source_h__
#define __ardour_source_h__
#include <string>
#include <set>
#include <glib.h>
#include <boost/utility.hpp>
#include "pbd/statefuldestructible.h"
#include "ardour/ardour.h"
#include "ardour/session_object.h"
#include "ardour/data_type.h"
namespace ARDOUR {
class Session;
class Source : public SessionObject
{
public:
enum Flag {
Writable = 0x1,
CanRename = 0x2,
Broadcast = 0x4,
Removable = 0x8,
RemovableIfEmpty = 0x10,
RemoveAtDestroy = 0x20,
NoPeakFile = 0x40,
Destructive = 0x80
};
Source (Session&, DataType type, const std::string& name, Flag flags=Flag(0));
Source (Session&, const XMLNode&);
virtual ~Source ();
DataType type() { return _type; }
time_t timestamp() const { return _timestamp; }
void stamp (time_t when) { _timestamp = when; }
virtual bool empty () const = 0;
virtual framecnt_t length (framepos_t pos) const = 0;
virtual void update_length (framepos_t pos, framecnt_t cnt) = 0;
virtual framepos_t natural_position() const { return 0; }
void mark_for_remove();
virtual void mark_streaming_write_started () {}
virtual void mark_streaming_write_completed () = 0;
virtual void session_saved() {}
XMLNode& get_state ();
int set_state (const XMLNode&, int version);
bool destructive() const { return (_flags & Destructive); }
bool writable () const;
virtual bool set_destructive (bool /*yn*/) { return false; }
virtual bool length_mutable() const { return false; }
static PBD::Signal1<void,Source*> SourceCreated;
bool has_been_analysed() const;
virtual bool can_be_analysed() const { return false; }
virtual void set_been_analysed (bool yn);
virtual bool check_for_analysis_data_on_disk();
PBD::Signal0<void> AnalysisChanged;
AnalysisFeatureList transients;
std::string get_transients_path() const;
int load_transients (const std::string&);
framepos_t timeline_position() const { return _timeline_position; }
virtual void set_timeline_position (framepos_t pos);
void set_allow_remove_if_empty (bool yn);
Glib::Mutex& mutex() { return _lock; }
Flag flags() const { return _flags; }
virtual void inc_use_count ();
virtual void dec_use_count ();
int use_count() const { return g_atomic_int_get (&_use_count); }
bool used() const { return use_count() > 0; }
uint32_t level() const { return _level; }
protected:
DataType _type;
Flag _flags;
time_t _timestamp;
framepos_t _timeline_position;
bool _analysed;
mutable Glib::Mutex _lock;
mutable Glib::Mutex _analysis_lock;
gint _use_count; /* atomic */
uint32_t _level; /* how deeply nested is this source w.r.t a disk file */
private:
void fix_writable_flags ();
};
}
#endif /* __ardour_source_h__ */
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