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>
39 enum RegionEditState {
40 EditChangesNothing = 0,
45 class Region : public PBD::StatefulDestructible, public boost::enable_shared_from_this<Region>
48 typedef std::vector<boost::shared_ptr<Source> > SourceList;
55 DefaultFadeOut = 0x10,
66 RightOfSplit = 0x8000,
68 DoNotSaveState = 0x20000,
70 range_guarantoor = USHRT_MAX
73 static const Flag DefaultFlags = Flag (Opaque|DefaultFadeIn|DefaultFadeOut|FadeIn|FadeOut);
75 static Change FadeChanged;
76 static Change SyncOffsetChanged;
77 static Change MuteChanged;
78 static Change OpacityChanged;
79 static Change LockChanged;
80 static Change LayerChanged;
81 static Change HiddenChanged;
83 sigc::signal<void,Change> StateChanged;
87 /* Note: changing the name of a Region does not constitute an edit */
89 string name() const { return _name; }
90 void set_name (string str);
92 const DataType& data_type() const { return _type; }
94 nframes_t position () const { return _position; }
95 nframes_t start () const { return _start; }
96 nframes_t length() const { return _length; }
97 layer_t layer () const { return _layer; }
99 nframes_t sync_offset(int& dir) const;
100 nframes_t sync_position() const;
102 nframes_t adjust_to_sync (nframes_t);
104 /* first_frame() is an alias; last_frame() just hides some math */
106 nframes_t first_frame() const { return _position; }
107 nframes_t last_frame() const { return _position + _length - 1; }
109 Flag flags() const { return _flags; }
110 bool hidden() const { return _flags & Hidden; }
111 bool muted() const { return _flags & Muted; }
112 bool opaque () const { return _flags & Opaque; }
113 bool locked() const { return _flags & Locked; }
114 bool automatic() const { return _flags & Automatic; }
115 bool whole_file() const { return _flags & WholeFile ; }
116 bool captured() const { return !(_flags & (Region::Flag (Region::Import|Region::External))); }
118 virtual bool should_save_state () const { return !(_flags & DoNotSaveState); };
121 void thaw (const string& why);
123 bool covers (nframes_t frame) const {
124 return first_frame() <= frame && frame < last_frame();
127 OverlapType coverage (nframes_t start, nframes_t end) const {
128 return ARDOUR::coverage (first_frame(), last_frame(), start, end);
131 bool equivalent (boost::shared_ptr<const Region>) const;
132 bool size_equivalent (boost::shared_ptr<const Region>) const;
133 bool overlap_equivalent (boost::shared_ptr<const Region>) const;
134 bool region_list_equivalent (boost::shared_ptr<const Region>) const;
135 bool source_equivalent (boost::shared_ptr<const Region>) const;
137 /* EDITING OPERATIONS */
139 void set_length (nframes_t, void *src);
140 void set_start (nframes_t, void *src);
141 void set_position (nframes_t, void *src);
142 void set_position_on_top (nframes_t, void *src);
143 void special_set_position (nframes_t);
144 void nudge_position (long, void *src);
146 bool at_natural_position () const;
147 void move_to_natural_position (void *src);
149 void trim_start (nframes_t new_position, void *src);
150 void trim_front (nframes_t new_position, void *src);
151 void trim_end (nframes_t new_position, void *src);
152 void trim_to (nframes_t position, nframes_t length, void *src);
154 void set_layer (layer_t l); /* ONLY Playlist can call this */
157 void raise_to_top ();
158 void lower_to_bottom ();
160 void set_sync_position (nframes_t n);
161 void clear_sync_position ();
162 void set_hidden (bool yn);
163 void set_muted (bool yn);
164 void set_opaque (bool yn);
165 void set_locked (bool yn);
167 virtual uint32_t read_data_count() const { return _read_data_count; }
169 boost::shared_ptr<ARDOUR::Playlist> playlist() const { return _playlist.lock(); }
170 virtual void set_playlist (boost::weak_ptr<ARDOUR::Playlist>);
172 void source_deleted (boost::shared_ptr<Source>);
174 boost::shared_ptr<Source> source (uint32_t n=0) const { return _sources[ (n < _sources.size()) ? n : 0 ]; }
175 uint32_t n_channels() const { return _sources.size(); }
177 std::vector<string> master_source_names();
182 XMLNode& get_state ();
183 virtual XMLNode& state (bool);
184 virtual int set_state (const XMLNode&);
185 virtual int set_live_state (const XMLNode&, Change&, bool send);
187 virtual boost::shared_ptr<Region> get_parent() const;
189 uint64_t last_layer_op() const { return _last_layer_op; }
190 void set_last_layer_op (uint64_t when);
193 friend class RegionFactory;
195 Region (boost::shared_ptr<Source> src, nframes_t start, nframes_t length,
196 const string& name, DataType type, layer_t = 0, Flag flags = DefaultFlags);
197 Region (SourceList& srcs, nframes_t start, nframes_t length,
198 const string& name, DataType type, layer_t = 0, Flag flags = DefaultFlags);
200 Region (boost::shared_ptr<const Region>, nframes_t start, nframes_t length, const string& name, layer_t = 0, Flag flags = DefaultFlags);
201 Region (boost::shared_ptr<const Region>);
202 Region (boost::shared_ptr<Source> src, const XMLNode&);
203 Region (SourceList& srcs, const XMLNode&);
206 XMLNode& get_short_state (); /* used only by Session */
208 void send_change (Change);
210 void trim_to_internal (nframes_t position, nframes_t length, void *src);
212 bool copied() const { return _flags & Copied; }
213 void maybe_uncopy ();
216 virtual bool verify_start (nframes_t);
217 virtual bool verify_start_and_length (nframes_t, nframes_t);
218 virtual bool verify_start_mutable (nframes_t&_start);
219 virtual bool verify_length (nframes_t);
220 virtual void recompute_at_start () = 0;
221 virtual void recompute_at_end () = 0;
231 nframes_t _sync_position;
233 mutable RegionEditState _first_edit;
235 mutable uint32_t _read_data_count; ///< modified in read()
236 Change _pending_changed;
237 uint64_t _last_layer_op; ///< timestamp
239 boost::weak_ptr<ARDOUR::Playlist> _playlist;
241 /** Used when timefx are applied, so we can always use the original source */
242 SourceList _master_sources;
245 } /* namespace ARDOUR */
247 #endif /* __ardour_region_h__ */