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.
21 #ifndef __ardour_region_h__
22 #define __ardour_region_h__
25 #include <boost/shared_ptr.hpp>
26 #include <boost/enable_shared_from_this.hpp>
29 #include <pbd/statefuldestructible.h>
31 #include <ardour/ardour.h>
32 #include <ardour/state_manager.h>
33 #include <ardour/data_type.h>
42 enum RegionEditState {
43 EditChangesNothing = 0,
48 struct RegionState : public StateManager::State
50 RegionState (std::string why) : StateManager::State (why) {}
52 jack_nframes_t _start;
53 jack_nframes_t _length;
54 jack_nframes_t _position;
56 jack_nframes_t _sync_position;
59 mutable RegionEditState _first_edit;
62 class Region : public PBD::StatefulDestructible, public StateManager, public boost::enable_shared_from_this<Region>
65 typedef std::vector<boost::shared_ptr<Source> > SourceList;
72 DefaultFadeOut = 0x10,
83 RightOfSplit = 0x8000,
85 DoNotSaveState = 0x20000,
87 range_guarantoor = USHRT_MAX
90 static const Flag DefaultFlags = Flag (Opaque|DefaultFadeIn|DefaultFadeOut|FadeIn|FadeOut);
92 static Change FadeChanged;
93 static Change SyncOffsetChanged;
94 static Change MuteChanged;
95 static Change OpacityChanged;
96 static Change LockChanged;
97 static Change LayerChanged;
98 static Change HiddenChanged;
102 const PBD::ID& id() const { return _id; }
104 /* Note: changing the name of a Region does not constitute an edit */
106 string name() const { return _name; }
107 void set_name (string str);
109 const DataType& data_type() const { return _type; }
111 jack_nframes_t position () const { return _position; }
112 jack_nframes_t start () const { return _start; }
113 jack_nframes_t length() const { return _length; }
114 layer_t layer () const { return _layer; }
116 jack_nframes_t sync_offset(int& dir) const;
117 jack_nframes_t sync_position() const;
119 jack_nframes_t adjust_to_sync (jack_nframes_t);
121 /* first_frame() is an alias; last_frame() just hides some math */
123 jack_nframes_t first_frame() const { return _position; }
124 jack_nframes_t last_frame() const { return _position + _length - 1; }
126 Flag flags() const { return _flags; }
127 bool hidden() const { return _flags & Hidden; }
128 bool muted() const { return _flags & Muted; }
129 bool opaque () const { return _flags & Opaque; }
130 bool locked() const { return _flags & Locked; }
131 bool automatic() const { return _flags & Automatic; }
132 bool whole_file() const { return _flags & WholeFile ; }
133 bool captured() const { return !(_flags & (Region::Flag (Region::Import|Region::External))); }
135 virtual bool should_save_state () const { return !(_flags & DoNotSaveState); };
138 void thaw (const string& why);
140 bool covers (jack_nframes_t frame) const {
141 return _position <= frame && frame < _position + _length;
144 OverlapType coverage (jack_nframes_t start, jack_nframes_t end) const {
145 return ARDOUR::coverage (_position, _position + _length - 1, start, end);
148 bool equivalent (boost::shared_ptr<const Region>) const;
149 bool size_equivalent (boost::shared_ptr<const Region>) const;
150 bool overlap_equivalent (boost::shared_ptr<const Region>) const;
151 bool region_list_equivalent (boost::shared_ptr<const Region>) const;
152 bool source_equivalent (boost::shared_ptr<const Region>) const;
154 /* EDITING OPERATIONS */
156 void set_length (jack_nframes_t, void *src);
157 void set_start (jack_nframes_t, void *src);
158 void set_position (jack_nframes_t, void *src);
159 void set_position_on_top (jack_nframes_t, void *src);
160 void special_set_position (jack_nframes_t);
161 void nudge_position (long, void *src);
163 void move_to_natural_position (void *src);
165 void trim_start (jack_nframes_t new_position, void *src);
166 void trim_front (jack_nframes_t new_position, void *src);
167 void trim_end (jack_nframes_t new_position, void *src);
168 void trim_to (jack_nframes_t position, jack_nframes_t length, void *src);
170 void set_layer (layer_t l); /* ONLY Playlist can call this */
173 void raise_to_top ();
174 void lower_to_bottom ();
176 void set_sync_position (jack_nframes_t n);
177 void clear_sync_position ();
178 void set_hidden (bool yn);
179 void set_muted (bool yn);
180 void set_opaque (bool yn);
181 void set_locked (bool yn);
183 virtual uint32_t read_data_count() const { return _read_data_count; }
185 ARDOUR::Playlist* playlist() const { return _playlist; }
187 virtual UndoAction get_memento() const = 0;
189 void set_playlist (ARDOUR::Playlist*);
191 void source_deleted (boost::shared_ptr<Source>);
193 boost::shared_ptr<Source> source (uint32_t n=0) const { return _sources[ (n < _sources.size()) ? n : 0 ]; }
194 uint32_t n_channels() const { return _sources.size(); }
196 std::vector<string> master_source_names();
201 XMLNode& get_state ();
202 virtual XMLNode& state (bool);
203 virtual int set_state (const XMLNode&);
205 boost::shared_ptr<Region> get_parent();
207 uint64_t last_layer_op() const { return _last_layer_op; }
208 void set_last_layer_op (uint64_t when);
211 friend class RegionFactory;
213 Region (boost::shared_ptr<Source> src, jack_nframes_t start, jack_nframes_t length,
214 const string& name, DataType type, layer_t = 0, Flag flags = DefaultFlags);
215 Region (SourceList& srcs, jack_nframes_t start, jack_nframes_t length,
216 const string& name, DataType type, layer_t = 0, Flag flags = DefaultFlags);
217 Region (boost::shared_ptr<const Region>, jack_nframes_t start, jack_nframes_t length, const string& name, layer_t = 0, Flag flags = DefaultFlags);
218 Region (boost::shared_ptr<const Region>);
219 Region (boost::shared_ptr<Source> src, const XMLNode&);
220 Region (SourceList& srcs, const XMLNode&);
223 XMLNode& get_short_state (); /* used only by Session */
225 /* state management */
227 void send_change (Change);
229 /* derived classes need these during their own state management calls */
231 void store_state (RegionState&) const;
232 Change restore_and_return_flags (RegionState&);
234 void trim_to_internal (jack_nframes_t position, jack_nframes_t length, void *src);
236 bool copied() const { return _flags & Copied; }
237 void maybe_uncopy ();
240 bool verify_start (jack_nframes_t);
241 bool verify_start_and_length (jack_nframes_t, jack_nframes_t);
242 bool verify_start_mutable (jack_nframes_t&_start);
243 bool verify_length (jack_nframes_t);
244 virtual void recompute_at_start () = 0;
245 virtual void recompute_at_end () = 0;
252 jack_nframes_t _start;
253 jack_nframes_t _length;
254 jack_nframes_t _position;
255 jack_nframes_t _sync_position;
257 mutable RegionEditState _first_edit;
259 mutable uint32_t _read_data_count; ///< modified in read()
260 Change _pending_changed;
261 uint64_t _last_layer_op; ///< timestamp
263 ARDOUR::Playlist* _playlist;
265 /** Used when timefx are applied, so we can always use the original source */
266 SourceList _master_sources;
269 } /* namespace ARDOUR */
271 #endif /* __ardour_region_h__ */