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>
30 #include <ardour/readable.h>
38 enum RegionEditState {
39 EditChangesNothing = 0,
44 class Region : public PBD::StatefulDestructible, public Readable, public boost::enable_shared_from_this<Region>
52 DefaultFadeOut = 0x10,
63 RightOfSplit = 0x8000,
65 DoNotSaveState = 0x20000,
67 range_guarantoor = USHRT_MAX
70 static const Flag DefaultFlags = Flag (Opaque|DefaultFadeIn|DefaultFadeOut|FadeIn|FadeOut);
72 static Change FadeChanged;
73 static Change SyncOffsetChanged;
74 static Change MuteChanged;
75 static Change OpacityChanged;
76 static Change LockChanged;
77 static Change LayerChanged;
78 static Change HiddenChanged;
80 sigc::signal<void,Change> StateChanged;
84 /* Note: changing the name of a Region does not constitute an edit */
86 string name() const { return _name; }
87 void set_name (string str);
89 nframes_t position () const { return _position; }
90 nframes_t start () const { return _start; }
91 nframes_t length() const { return _length; }
92 layer_t layer () const { return _layer; }
94 /* these two are valid ONLY during a StateChanged signal handler */
96 nframes_t last_position() const { return _last_position; }
97 nframes_t last_length() const { return _last_length; }
99 nframes64_t ancestral_start () const { return _ancestral_start; }
100 nframes64_t ancestral_length () const { return _ancestral_length; }
101 float stretch() const { return _stretch; }
102 float shift() const { return _shift; }
104 void set_ancestral_data (nframes64_t start, nframes64_t length, float stretch, float shift);
106 nframes_t sync_offset(int& dir) const;
107 nframes_t sync_position() const;
109 nframes_t adjust_to_sync (nframes_t);
111 /* first_frame() is an alias; last_frame() just hides some math */
113 nframes_t first_frame() const { return _position; }
114 nframes_t last_frame() const { return _position + _length - 1; }
116 bool hidden() const { return _flags & Hidden; }
117 bool muted() const { return _flags & Muted; }
118 bool opaque () const { return _flags & Opaque; }
119 bool locked() const { return _flags & Locked; }
120 bool automatic() const { return _flags & Automatic; }
121 bool whole_file() const { return _flags & WholeFile ; }
122 Flag flags() const { return _flags; }
124 virtual bool should_save_state () const { return !(_flags & DoNotSaveState); };
127 void thaw (const string& why);
129 bool covers (nframes_t frame) const {
130 return first_frame() <= frame && frame <= last_frame();
133 OverlapType coverage (nframes_t start, nframes_t end) const {
134 return ARDOUR::coverage (first_frame(), last_frame(), start, end);
137 bool equivalent (boost::shared_ptr<const Region>) const;
138 bool size_equivalent (boost::shared_ptr<const Region>) const;
139 bool overlap_equivalent (boost::shared_ptr<const Region>) const;
140 bool region_list_equivalent (boost::shared_ptr<const Region>) const;
141 virtual bool source_equivalent (boost::shared_ptr<const Region>) const = 0;
143 virtual bool speed_mismatch (float) const = 0;
145 /* EDITING OPERATIONS */
147 void set_length (nframes_t, void *src);
148 void set_start (nframes_t, void *src);
149 void set_position (nframes_t, void *src);
150 void set_position_on_top (nframes_t, void *src);
151 void special_set_position (nframes_t);
152 void nudge_position (nframes64_t, void *src);
154 bool at_natural_position () const;
155 void move_to_natural_position (void *src);
157 void trim_start (nframes_t new_position, void *src);
158 void trim_front (nframes_t new_position, void *src);
159 void trim_end (nframes_t new_position, void *src);
160 void trim_to (nframes_t position, nframes_t length, void *src);
162 void set_layer (layer_t l); /* ONLY Playlist can call this */
165 void raise_to_top ();
166 void lower_to_bottom ();
168 void set_sync_position (nframes_t n);
169 void clear_sync_position ();
170 void set_hidden (bool yn);
171 void set_muted (bool yn);
172 void set_opaque (bool yn);
173 void set_locked (bool yn);
175 virtual uint32_t read_data_count() const { return _read_data_count; }
177 boost::shared_ptr<ARDOUR::Playlist> playlist() const { return _playlist.lock(); }
178 virtual void set_playlist (boost::weak_ptr<ARDOUR::Playlist>);
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 = 0;
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 (nframes_t start, nframes_t length,
196 const string& name, layer_t = 0, Flag flags = DefaultFlags);
197 Region (boost::shared_ptr<const Region>, nframes_t start, nframes_t length, const string& name, layer_t = 0, Flag flags = DefaultFlags);
198 Region (boost::shared_ptr<const Region>);
199 Region (const XMLNode&);
203 XMLNode& get_short_state (); /* used only by Session */
205 void send_change (Change);
207 void trim_to_internal (nframes_t position, nframes_t length, void *src);
209 bool copied() const { return _flags & Copied; }
210 void maybe_uncopy ();
213 virtual bool verify_start (nframes_t) = 0;
214 virtual bool verify_start_and_length (nframes_t, nframes_t&) = 0;
215 virtual bool verify_start_mutable (nframes_t&_start) = 0;
216 virtual bool verify_length (nframes_t&) = 0;
217 virtual void recompute_at_start () = 0;
218 virtual void recompute_at_end () = 0;
223 nframes_t _last_length;
225 nframes_t _last_position;
227 nframes_t _sync_position;
230 mutable RegionEditState _first_edit;
233 boost::weak_ptr<ARDOUR::Playlist> _playlist;
234 mutable uint32_t _read_data_count; // modified in read()
235 Change pending_changed;
236 uint64_t _last_layer_op; // timestamp
237 nframes64_t _ancestral_start;
238 nframes64_t _ancestral_length;
243 } /* namespace ARDOUR */
245 #endif /* __ardour_region_h__ */