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/*
Copyright (C) 2000-2001 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.
$Id$
*/
#ifndef __ardour_region_h__
#define __ardour_region_h__
#include <boost/shared_ptr.hpp>
#include <boost/enable_shared_from_this.hpp>
#include <pbd/undo.h>
#include <pbd/statefuldestructible.h>
#include <ardour/ardour.h>
class XMLNode;
namespace ARDOUR {
class Playlist;
enum RegionEditState {
EditChangesNothing = 0,
EditChangesName = 1,
EditChangesID = 2
};
class Region : public PBD::StatefulDestructible, public boost::enable_shared_from_this<Region>
{
public:
enum Flag {
Muted = 0x1,
Opaque = 0x2,
EnvelopeActive = 0x4,
DefaultFadeIn = 0x8,
DefaultFadeOut = 0x10,
Locked = 0x20,
Automatic = 0x40,
WholeFile = 0x80,
FadeIn = 0x100,
FadeOut = 0x200,
Copied = 0x400,
Import = 0x800,
External = 0x1000,
SyncMarked = 0x2000,
LeftOfSplit = 0x4000,
RightOfSplit = 0x8000,
Hidden = 0x10000,
DoNotSaveState = 0x20000,
//
range_guarantoor = USHRT_MAX
};
static const Flag DefaultFlags = Flag (Opaque|DefaultFadeIn|DefaultFadeOut|FadeIn|FadeOut);
static Change FadeChanged;
static Change SyncOffsetChanged;
static Change MuteChanged;
static Change OpacityChanged;
static Change LockChanged;
static Change LayerChanged;
static Change HiddenChanged;
sigc::signal<void,Change> StateChanged;
virtual ~Region();
/* Note: changing the name of a Region does not constitute an edit */
string name() const { return _name; }
void set_name (string str);
nframes_t position () const { return _position; }
nframes_t start () const { return _start; }
nframes_t length() const { return _length; }
layer_t layer () const { return _layer; }
nframes_t sync_offset(int& dir) const;
nframes_t sync_position() const;
nframes_t adjust_to_sync (nframes_t);
/* first_frame() is an alias; last_frame() just hides some math */
nframes_t first_frame() const { return _position; }
nframes_t last_frame() const { return _position + _length - 1; }
bool hidden() const { return _flags & Hidden; }
bool muted() const { return _flags & Muted; }
bool opaque () const { return _flags & Opaque; }
bool locked() const { return _flags & Locked; }
bool automatic() const { return _flags & Automatic; }
bool whole_file() const { return _flags & WholeFile ; }
Flag flags() const { return _flags; }
virtual bool should_save_state () const { return !(_flags & DoNotSaveState); };
void freeze ();
void thaw (const string& why);
bool covers (nframes_t frame) const {
return first_frame() <= frame && frame < last_frame();
}
OverlapType coverage (nframes_t start, nframes_t end) const {
return ARDOUR::coverage (first_frame(), last_frame(), start, end);
}
bool equivalent (boost::shared_ptr<const Region>) const;
bool size_equivalent (boost::shared_ptr<const Region>) const;
bool overlap_equivalent (boost::shared_ptr<const Region>) const;
bool region_list_equivalent (boost::shared_ptr<const Region>) const;
virtual bool source_equivalent (boost::shared_ptr<const Region>) const = 0;
virtual bool speed_mismatch (float) const = 0;
/* EDITING OPERATIONS */
void set_length (nframes_t, void *src);
void set_start (nframes_t, void *src);
void set_position (nframes_t, void *src);
void set_position_on_top (nframes_t, void *src);
void special_set_position (nframes_t);
void nudge_position (long, void *src);
void move_to_natural_position (void *src);
void trim_start (nframes_t new_position, void *src);
void trim_front (nframes_t new_position, void *src);
void trim_end (nframes_t new_position, void *src);
void trim_to (nframes_t position, nframes_t length, void *src);
void set_layer (layer_t l); /* ONLY Playlist can call this */
void raise ();
void lower ();
void raise_to_top ();
void lower_to_bottom ();
void set_sync_position (nframes_t n);
void clear_sync_position ();
void set_hidden (bool yn);
void set_muted (bool yn);
void set_opaque (bool yn);
void set_locked (bool yn);
virtual uint32_t read_data_count() const { return _read_data_count; }
ARDOUR::Playlist* playlist() const { return _playlist; }
void set_playlist (ARDOUR::Playlist*);
virtual void lock_sources () {}
virtual void unlock_sources () {}
/* serialization */
XMLNode& get_state ();
virtual XMLNode& state (bool);
virtual int set_state (const XMLNode&);
virtual int set_live_state (const XMLNode&, Change&, bool send);
virtual boost::shared_ptr<Region> get_parent() = 0;
uint64_t last_layer_op() const { return _last_layer_op; }
void set_last_layer_op (uint64_t when);
protected:
friend class RegionFactory;
Region (nframes_t start, nframes_t length,
const string& name, layer_t = 0, Flag flags = DefaultFlags);
Region (boost::shared_ptr<const Region>, nframes_t start, nframes_t length, const string& name, layer_t = 0, Flag flags = DefaultFlags);
Region (boost::shared_ptr<const Region>);
Region (const XMLNode&);
protected:
XMLNode& get_short_state (); /* used only by Session */
void send_change (Change);
void trim_to_internal (nframes_t position, nframes_t length, void *src);
bool copied() const { return _flags & Copied; }
void maybe_uncopy ();
void first_edit ();
virtual bool verify_start (nframes_t) = 0;
virtual bool verify_start_and_length (nframes_t, nframes_t) = 0;
virtual bool verify_start_mutable (nframes_t&_start) = 0;
virtual bool verify_length (nframes_t) = 0;
virtual void recompute_at_start () = 0;
virtual void recompute_at_end () = 0;
nframes_t _start;
nframes_t _length;
nframes_t _position;
Flag _flags;
nframes_t _sync_position;
layer_t _layer;
string _name;
mutable RegionEditState _first_edit;
int _frozen;
Glib::Mutex lock;
ARDOUR::Playlist* _playlist;
mutable uint32_t _read_data_count; // modified in read()
Change pending_changed;
uint64_t _last_layer_op; // timestamp
};
} /* namespace ARDOUR */
#endif /* __ardour_region_h__ */
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