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__
28 #include <ardour/ardour.h>
29 #include <ardour/state_manager.h>
38 enum RegionEditState {
39 EditChangesNothing = 0,
44 struct RegionState : public StateManager::State
46 RegionState (std::string why) : StateManager::State (why) {}
48 jack_nframes_t _start;
49 jack_nframes_t _length;
50 jack_nframes_t _position;
52 jack_nframes_t _sync_position;
55 mutable RegionEditState _first_edit;
58 class Region : public Stateful, public StateManager
61 typedef std::vector<Source *> SourceList;
68 DefaultFadeOut = 0x10,
79 RightOfSplit = 0x8000,
81 DoNotSaveState = 0x20000,
83 range_guarantoor = USHRT_MAX
86 static const Flag DefaultFlags = Flag (Opaque|DefaultFadeIn|DefaultFadeOut|FadeIn|FadeOut);
88 static Change FadeChanged;
89 static Change SyncOffsetChanged;
90 static Change MuteChanged;
91 static Change OpacityChanged;
92 static Change LockChanged;
93 static Change LayerChanged;
94 static Change HiddenChanged;
96 Region (Source& src, jack_nframes_t start, jack_nframes_t length,
97 const string& name, layer_t = 0, Flag flags = DefaultFlags);
98 Region (SourceList& srcs, jack_nframes_t start, jack_nframes_t length,
99 const string& name, layer_t = 0, Flag flags = DefaultFlags);
100 Region (const Region&, jack_nframes_t start, jack_nframes_t length,
101 const string& name, layer_t = 0, Flag flags = DefaultFlags);
102 Region (const Region&);
103 Region (SourceList& srcs, const XMLNode&);
104 Region (Source& src, const XMLNode&);
107 const PBD::ID& id() const { return _id; }
109 /* Note: changing the name of a Region does not constitute an edit */
111 string name() const { return _name; }
112 void set_name (string str);
114 jack_nframes_t position () const { return _position; }
115 jack_nframes_t start () const { return _start; }
116 jack_nframes_t length() const { return _length; }
117 layer_t layer () const { return _layer; }
119 jack_nframes_t sync_offset(int& dir) const;
120 jack_nframes_t sync_position() const;
122 jack_nframes_t adjust_to_sync (jack_nframes_t);
124 /* first_frame() is an alias; last_frame() just hides some math */
126 jack_nframes_t first_frame() const { return _position; }
127 jack_nframes_t last_frame() const { return _position + _length - 1; }
129 Flag flags() const { return _flags; }
130 bool hidden() const { return _flags & Hidden; }
131 bool muted() const { return _flags & Muted; }
132 bool opaque () const { return _flags & Opaque; }
133 bool locked() const { return _flags & Locked; }
134 bool automatic() const { return _flags & Automatic; }
135 bool whole_file() const { return _flags & WholeFile ; }
136 bool captured() const { return !(_flags & (Region::Flag (Region::Import|Region::External))); }
138 virtual bool should_save_state () const { return !(_flags & DoNotSaveState); };
141 void thaw (const string& why);
143 bool covers (jack_nframes_t frame) const {
144 return _position <= frame && frame < _position + _length;
147 OverlapType coverage (jack_nframes_t start, jack_nframes_t end) const {
148 return ARDOUR::coverage (_position, _position + _length - 1, start, end);
151 bool equivalent (const Region&) const;
152 bool size_equivalent (const Region&) const;
153 bool overlap_equivalent (const Region&) const;
154 bool region_list_equivalent (const Region&) const;
155 bool source_equivalent (const Region&) const;
157 /* EDITING OPERATIONS */
159 void set_length (jack_nframes_t, void *src);
160 void set_start (jack_nframes_t, void *src);
161 void set_position (jack_nframes_t, void *src);
162 void set_position_on_top (jack_nframes_t, void *src);
163 void special_set_position (jack_nframes_t);
164 void nudge_position (long, void *src);
166 void move_to_natural_position (void *src);
168 void trim_start (jack_nframes_t new_position, void *src);
169 void trim_front (jack_nframes_t new_position, void *src);
170 void trim_end (jack_nframes_t new_position, void *src);
171 void trim_to (jack_nframes_t position, jack_nframes_t length, void *src);
173 void set_layer (layer_t l); /* ONLY Playlist can call this */
176 void raise_to_top ();
177 void lower_to_bottom ();
179 void set_sync_position (jack_nframes_t n);
180 void clear_sync_position ();
181 void set_hidden (bool yn);
182 void set_muted (bool yn);
183 void set_opaque (bool yn);
184 void set_locked (bool yn);
186 virtual uint32_t read_data_count() const { return _read_data_count; }
188 ARDOUR::Playlist* playlist() const { return _playlist; }
190 virtual UndoAction get_memento() const = 0;
192 void set_playlist (ARDOUR::Playlist*);
194 void lock_sources ();
195 void unlock_sources ();
196 void source_deleted (Source*);
198 Source& source (uint32_t n=0) const { return *_sources[ (n < _sources.size()) ? n : 0 ]; }
199 uint32_t n_channels() const { return _sources.size(); }
201 std::vector<string> master_source_names();
206 XMLNode& get_state ();
207 virtual XMLNode& state (bool);
208 virtual int set_state (const XMLNode&);
210 sigc::signal<void,Region*> GoingAway;
212 /* This is emitted only when a new id is assigned. Therefore,
213 in a pure Region copy, it will not be emitted.
215 It must be emitted by derived classes, not Region
216 itself, to permit dynamic_cast<> to be used to
217 infer the type of Region.
220 static sigc::signal<void,Region*> CheckNewRegion;
222 Region* get_parent();
224 uint64_t last_layer_op() const { return _last_layer_op; }
225 void set_last_layer_op (uint64_t when);
228 XMLNode& get_short_state (); /* used only by Session */
230 /* state management */
232 void send_change (Change);
234 /* derived classes need these during their own state management calls */
236 void store_state (RegionState&) const;
237 Change restore_and_return_flags (RegionState&);
239 void trim_to_internal (jack_nframes_t position, jack_nframes_t length, void *src);
241 bool copied() const { return _flags & Copied; }
242 void maybe_uncopy ();
245 bool verify_start (jack_nframes_t);
246 bool verify_start_and_length (jack_nframes_t, jack_nframes_t);
247 bool verify_start_mutable (jack_nframes_t&_start);
248 bool verify_length (jack_nframes_t);
249 virtual void recompute_at_start () = 0;
250 virtual void recompute_at_end () = 0;
256 jack_nframes_t _start;
257 jack_nframes_t _length;
258 jack_nframes_t _position;
259 jack_nframes_t _sync_position;
261 mutable RegionEditState _first_edit;
263 mutable uint32_t _read_data_count; ///< modified in read()
264 Change _pending_changed;
265 uint64_t _last_layer_op; ///< timestamp
267 ARDOUR::Playlist* _playlist;
269 /** Used when timefx are applied, so we can always use the original source */
270 SourceList _master_sources;
273 } /* namespace ARDOUR */
275 #endif /* __ardour_region_h__ */