2 Copyright (C) 2000-2001 Paul Davis
4 This program is free software; you can redistribute it and/or modify
5 it under the terms of the GNU General Public License as published by
6 the Free Software Foundation; either version 2 of the License, or
7 (at your option) any later version.
9 This program is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 GNU General Public License for more details.
14 You should have received a copy of the GNU General Public License
15 along with this program; if not, write to the Free Software
16 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
20 #ifndef __ardour_region_h__
21 #define __ardour_region_h__
23 #include <boost/shared_ptr.hpp>
24 #include <boost/enable_shared_from_this.hpp>
27 #include <pbd/statefuldestructible.h>
29 #include <ardour/ardour.h>
37 enum RegionEditState {
38 EditChangesNothing = 0,
43 class Region : public PBD::StatefulDestructible, public boost::enable_shared_from_this<Region>
51 DefaultFadeOut = 0x10,
62 RightOfSplit = 0x8000,
64 DoNotSaveState = 0x20000,
66 range_guarantoor = USHRT_MAX
69 static const Flag DefaultFlags = Flag (Opaque|DefaultFadeIn|DefaultFadeOut|FadeIn|FadeOut);
71 static Change FadeChanged;
72 static Change SyncOffsetChanged;
73 static Change MuteChanged;
74 static Change OpacityChanged;
75 static Change LockChanged;
76 static Change LayerChanged;
77 static Change HiddenChanged;
79 sigc::signal<void,Change> StateChanged;
83 /* Note: changing the name of a Region does not constitute an edit */
85 string name() const { return _name; }
86 void set_name (string str);
88 nframes_t position () const { return _position; }
89 nframes_t start () const { return _start; }
90 nframes_t length() const { return _length; }
91 layer_t layer () const { return _layer; }
93 nframes_t sync_offset(int& dir) const;
94 nframes_t sync_position() const;
96 nframes_t adjust_to_sync (nframes_t);
98 /* first_frame() is an alias; last_frame() just hides some math */
100 nframes_t first_frame() const { return _position; }
101 nframes_t last_frame() const { return _position + _length - 1; }
103 bool hidden() const { return _flags & Hidden; }
104 bool muted() const { return _flags & Muted; }
105 bool opaque () const { return _flags & Opaque; }
106 bool locked() const { return _flags & Locked; }
107 bool automatic() const { return _flags & Automatic; }
108 bool whole_file() const { return _flags & WholeFile ; }
109 Flag flags() const { return _flags; }
111 virtual bool should_save_state () const { return !(_flags & DoNotSaveState); };
114 void thaw (const string& why);
116 bool covers (nframes_t frame) const {
117 return first_frame() <= frame && frame < last_frame();
120 OverlapType coverage (nframes_t start, nframes_t end) const {
121 return ARDOUR::coverage (first_frame(), last_frame(), start, end);
124 bool equivalent (boost::shared_ptr<const Region>) const;
125 bool size_equivalent (boost::shared_ptr<const Region>) const;
126 bool overlap_equivalent (boost::shared_ptr<const Region>) const;
127 bool region_list_equivalent (boost::shared_ptr<const Region>) const;
128 virtual bool source_equivalent (boost::shared_ptr<const Region>) const = 0;
130 virtual bool speed_mismatch (float) const = 0;
132 /* EDITING OPERATIONS */
134 void set_length (nframes_t, void *src);
135 void set_start (nframes_t, void *src);
136 void set_position (nframes_t, void *src);
137 void set_position_on_top (nframes_t, void *src);
138 void special_set_position (nframes_t);
139 void nudge_position (long, void *src);
141 bool at_natural_position () const;
142 void move_to_natural_position (void *src);
144 void trim_start (nframes_t new_position, void *src);
145 void trim_front (nframes_t new_position, void *src);
146 void trim_end (nframes_t new_position, void *src);
147 void trim_to (nframes_t position, nframes_t length, void *src);
149 void set_layer (layer_t l); /* ONLY Playlist can call this */
152 void raise_to_top ();
153 void lower_to_bottom ();
155 void set_sync_position (nframes_t n);
156 void clear_sync_position ();
157 void set_hidden (bool yn);
158 void set_muted (bool yn);
159 void set_opaque (bool yn);
160 void set_locked (bool yn);
162 virtual uint32_t read_data_count() const { return _read_data_count; }
164 boost::shared_ptr<ARDOUR::Playlist> playlist() const { return _playlist.lock(); }
165 virtual void set_playlist (boost::weak_ptr<ARDOUR::Playlist>);
169 XMLNode& get_state ();
170 virtual XMLNode& state (bool);
171 virtual int set_state (const XMLNode&);
172 virtual int set_live_state (const XMLNode&, Change&, bool send);
174 virtual boost::shared_ptr<Region> get_parent() const = 0;
176 uint64_t last_layer_op() const { return _last_layer_op; }
177 void set_last_layer_op (uint64_t when);
180 friend class RegionFactory;
182 Region (nframes_t start, nframes_t length,
183 const string& name, layer_t = 0, Flag flags = DefaultFlags);
184 Region (boost::shared_ptr<const Region>, nframes_t start, nframes_t length, const string& name, layer_t = 0, Flag flags = DefaultFlags);
185 Region (boost::shared_ptr<const Region>);
186 Region (const XMLNode&);
190 XMLNode& get_short_state (); /* used only by Session */
192 void send_change (Change);
194 void trim_to_internal (nframes_t position, nframes_t length, void *src);
196 bool copied() const { return _flags & Copied; }
197 void maybe_uncopy ();
200 virtual bool verify_start (nframes_t) = 0;
201 virtual bool verify_start_and_length (nframes_t, nframes_t) = 0;
202 virtual bool verify_start_mutable (nframes_t&_start) = 0;
203 virtual bool verify_length (nframes_t) = 0;
204 virtual void recompute_at_start () = 0;
205 virtual void recompute_at_end () = 0;
212 nframes_t _sync_position;
215 mutable RegionEditState _first_edit;
218 boost::weak_ptr<ARDOUR::Playlist> _playlist;
219 mutable uint32_t _read_data_count; // modified in read()
220 Change pending_changed;
221 uint64_t _last_layer_op; // timestamp
224 } /* namespace ARDOUR */
226 #endif /* __ardour_region_h__ */