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__
24 #include <boost/shared_ptr.hpp>
25 #include <boost/enable_shared_from_this.hpp>
28 #include <pbd/statefuldestructible.h>
30 #include <ardour/ardour.h>
31 #include <ardour/data_type.h>
40 enum RegionEditState {
41 EditChangesNothing = 0,
46 class Region : public PBD::StatefulDestructible, public boost::enable_shared_from_this<Region>
49 typedef std::vector<boost::shared_ptr<Source> > SourceList;
56 DefaultFadeOut = 0x10,
67 RightOfSplit = 0x8000,
69 DoNotSaveState = 0x20000,
70 PositionLocked = 0x40000,
72 range_guarantoor = USHRT_MAX
75 static const Flag DefaultFlags = Flag (Opaque|DefaultFadeIn|DefaultFadeOut|FadeIn|FadeOut);
77 static Change FadeChanged;
78 static Change SyncOffsetChanged;
79 static Change MuteChanged;
80 static Change OpacityChanged;
81 static Change LockChanged;
82 static Change LayerChanged;
83 static Change HiddenChanged;
85 sigc::signal<void,Change> StateChanged;
89 /* Note: changing the name of a Region does not constitute an edit */
91 string name() const { return _name; }
92 void set_name (string str);
94 const DataType& data_type() const { return _type; }
96 nframes_t position () const { return _position; }
97 nframes_t start () const { return _start; }
98 nframes_t length() const { return _length; }
99 layer_t layer () const { return _layer; }
101 nframes_t sync_offset(int& dir) const;
102 nframes_t sync_position() const;
104 nframes_t adjust_to_sync (nframes_t);
106 /* first_frame() is an alias; last_frame() just hides some math */
108 nframes_t first_frame() const { return _position; }
109 nframes_t last_frame() const { return _position + _length - 1; }
111 Flag flags() const { return _flags; }
112 bool hidden() const { return _flags & Hidden; }
113 bool muted() const { return _flags & Muted; }
114 bool opaque () const { return _flags & Opaque; }
115 bool locked() const { return _flags & Locked; }
116 bool position_locked() const { return _flags & PositionLocked; }
117 bool automatic() const { return _flags & Automatic; }
118 bool whole_file() const { return _flags & WholeFile ; }
119 bool captured() const { return !(_flags & (Region::Flag (Region::Import|Region::External))); }
120 bool can_move() const { return !(_flags & (Locked|PositionLocked)); }
122 virtual bool should_save_state () const { return !(_flags & DoNotSaveState); };
125 void thaw (const string& why);
127 bool covers (nframes_t frame) const {
128 return first_frame() <= frame && frame < last_frame();
131 OverlapType coverage (nframes_t start, nframes_t end) const {
132 return ARDOUR::coverage (first_frame(), last_frame(), start, end);
135 bool equivalent (boost::shared_ptr<const Region>) const;
136 bool size_equivalent (boost::shared_ptr<const Region>) const;
137 bool overlap_equivalent (boost::shared_ptr<const Region>) const;
138 bool region_list_equivalent (boost::shared_ptr<const Region>) const;
139 bool source_equivalent (boost::shared_ptr<const Region>) const;
141 /* EDITING OPERATIONS */
143 void set_length (nframes_t, void *src);
144 void set_start (nframes_t, void *src);
145 void set_position (nframes_t, void *src);
146 void set_position_on_top (nframes_t, void *src);
147 void special_set_position (nframes_t);
148 void nudge_position (long, void *src);
150 bool at_natural_position () const;
151 void move_to_natural_position (void *src);
153 void trim_start (nframes_t new_position, void *src);
154 void trim_front (nframes_t new_position, void *src);
155 void trim_end (nframes_t new_position, void *src);
156 void trim_to (nframes_t position, nframes_t length, void *src);
158 void set_layer (layer_t l); /* ONLY Playlist can call this */
159 void raise_to_top ();
160 void lower_to_bottom ();
162 void set_sync_position (nframes_t n);
163 void clear_sync_position ();
164 void set_hidden (bool yn);
165 void set_muted (bool yn);
166 void set_opaque (bool yn);
167 void set_locked (bool yn);
168 void set_position_locked (bool yn);
172 virtual uint32_t read_data_count() const { return _read_data_count; }
174 boost::shared_ptr<ARDOUR::Playlist> playlist() const { return _playlist.lock(); }
175 virtual void set_playlist (boost::weak_ptr<ARDOUR::Playlist>);
177 void source_deleted (boost::shared_ptr<Source>);
179 boost::shared_ptr<Source> source (uint32_t n=0) const { return _sources[ (n < _sources.size()) ? n : 0 ]; }
180 uint32_t n_channels() const { return _sources.size(); }
182 std::vector<string> master_source_names();
184 const SourceList& sources() const { return _sources; }
185 const SourceList& master_sources() const { return _master_sources; }
189 XMLNode& get_state ();
190 virtual XMLNode& state (bool);
191 virtual int set_state (const XMLNode&);
192 virtual int set_live_state (const XMLNode&, Change&, bool send);
194 virtual boost::shared_ptr<Region> get_parent() const;
196 uint64_t last_layer_op() const { return _last_layer_op; }
197 void set_last_layer_op (uint64_t when);
199 virtual bool is_dependent() const { return false; }
200 virtual bool depends_on (boost::shared_ptr<Region> other) const { return false; }
203 friend class RegionFactory;
205 Region (boost::shared_ptr<Source> src, nframes_t start, nframes_t length,
206 const string& name, DataType type, layer_t = 0, Flag flags = DefaultFlags);
207 Region (SourceList& srcs, nframes_t start, nframes_t length,
208 const string& name, DataType type, layer_t = 0, Flag flags = DefaultFlags);
210 Region (boost::shared_ptr<const Region>, nframes_t start, nframes_t length, const string& name, layer_t = 0, Flag flags = DefaultFlags);
211 Region (boost::shared_ptr<const Region>);
212 Region (boost::shared_ptr<Source> src, const XMLNode&);
213 Region (SourceList& srcs, const XMLNode&);
215 /* this one is for derived types of derived types */
217 Region (nframes_t start, nframes_t length, const string& name, DataType, layer_t = 0, Flag flags = DefaultFlags);
220 XMLNode& get_short_state (); /* used only by Session */
222 void send_change (Change);
224 void trim_to_internal (nframes_t position, nframes_t length, void *src);
226 bool copied() const { return _flags & Copied; }
227 void maybe_uncopy ();
230 virtual bool verify_start (nframes_t);
231 virtual bool verify_start_and_length (nframes_t, nframes_t);
232 virtual bool verify_start_mutable (nframes_t&_start);
233 virtual bool verify_length (nframes_t);
234 virtual void recompute_at_start () = 0;
235 virtual void recompute_at_end () = 0;
243 nframes_t _sync_position;
245 mutable RegionEditState _first_edit;
247 mutable uint32_t _read_data_count; ///< modified in read()
248 Change _pending_changed;
249 uint64_t _last_layer_op; ///< timestamp
252 /** Used when timefx are applied, so we can always use the original source */
253 SourceList _master_sources;
255 boost::weak_ptr<ARDOUR::Playlist> _playlist;
258 } /* namespace ARDOUR */
260 #endif /* __ardour_region_h__ */