2 Copyright (C) 2006 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.
19 #ifndef __ardour_track_h__
20 #define __ardour_track_h__
22 #include <boost/shared_ptr.hpp>
24 #include "pbd/enum_convert.h"
26 #include "ardour/interthread_info.h"
27 #include "ardour/recordable.h"
28 #include "ardour/route.h"
29 #include "ardour/public_diskstream.h"
41 class RecordEnableControl;
42 class RecordSafeControl;
44 /** A track is an route (bus) with a recordable diskstream and
45 * related objects relevant to tracking, playback and editing.
47 * Specifically a track has regions and playlist objects.
49 class LIBARDOUR_API Track : public Route, public Recordable, public PublicDiskstream
52 Track (Session&, std::string name, PresentationInfo::Flag f = PresentationInfo::Flag (0), TrackMode m = Normal, DataType default_type = DataType::AUDIO);
57 bool set_name (const std::string& str);
58 void resync_track_name ();
60 TrackMode mode () const { return _mode; }
61 #ifdef XXX_OLD_DESTRUCTIVE_API_XXX
62 virtual int set_mode (TrackMode /*m*/) { return false; }
63 virtual bool can_use_mode (TrackMode /*m*/, bool& /*bounce_required*/) { return false; }
64 PBD::Signal0<void> TrackModeChanged;
67 boost::shared_ptr<MonitorControl> monitoring_control() const { return _monitoring_control; }
69 MonitorState monitoring_state () const;
70 MeterState metering_state () const;
72 virtual int no_roll (pframes_t nframes, framepos_t start_frame, framepos_t end_frame,
75 int silent_roll (pframes_t nframes, framepos_t start_frame, framepos_t end_frame,
78 virtual int roll (pframes_t nframes, framepos_t start_frame, framepos_t end_frame,
79 int declick, bool& need_butler) = 0;
81 bool needs_butler() const { return _needs_butler; }
83 virtual DataType data_type () const = 0;
87 void use_new_diskstream ();
88 virtual boost::shared_ptr<Diskstream> create_diskstream() = 0;
89 virtual void set_diskstream (boost::shared_ptr<Diskstream>);
91 void set_latency_compensation (framecnt_t);
99 FreezeState freeze_state() const;
101 virtual void freeze_me (InterThreadInfo&) = 0;
102 virtual void unfreeze () = 0;
104 /** Test if the track can be bounced with the given settings.
105 * If sends/inserts/returns are present in the signal path or the given track
106 * has no audio outputs bouncing is not possible.
108 * @param endpoint the processor to tap the signal off (or nil for the top)
109 * @param include_endpoint include the given processor in the bounced audio.
110 * @return true if the track can be bounced, or false otherwise.
112 virtual bool bounceable (boost::shared_ptr<Processor> endpoint, bool include_endpoint) const = 0;
114 /** bounce track from session start to session end to new region
116 * @param itt asynchronous progress report and cancel
117 * @return a new audio region (or nil in case of error)
119 virtual boost::shared_ptr<Region> bounce (InterThreadInfo& itt) = 0;
121 /** Bounce the given range to a new audio region.
122 * @param start start time (in samples)
123 * @param end end time (in samples)
124 * @param itt asynchronous progress report and cancel
125 * @param endpoint the processor to tap the signal off (or nil for the top)
126 * @param include_endpoint include the given processor in the bounced audio.
127 * @return a new audio region (or nil in case of error)
129 virtual boost::shared_ptr<Region> bounce_range (framepos_t start, framepos_t end, InterThreadInfo& itt,
130 boost::shared_ptr<Processor> endpoint, bool include_endpoint) = 0;
131 virtual int export_stuff (BufferSet& bufs, framepos_t start_frame, framecnt_t nframes,
132 boost::shared_ptr<Processor> endpoint, bool include_endpoint, bool for_export, bool for_freeze) = 0;
134 XMLNode& get_state();
135 XMLNode& get_template();
136 virtual int set_state (const XMLNode&, int version);
137 static void zero_diskstream_id_in_xml (XMLNode&);
139 boost::shared_ptr<AutomationControl> rec_enable_control() const { return _record_enable_control; }
140 boost::shared_ptr<AutomationControl> rec_safe_control() const { return _record_safe_control; }
142 int prep_record_enabled (bool);
143 bool can_be_record_enabled ();
144 bool can_be_record_safe ();
146 bool using_diskstream_id (PBD::ID) const;
148 void set_block_size (pframes_t);
150 /* PublicDiskstream interface */
151 boost::shared_ptr<Playlist> playlist ();
152 void request_input_monitoring (bool);
153 void ensure_input_monitoring (bool);
154 bool destructive () const;
155 std::list<boost::shared_ptr<Source> > & last_capture_sources ();
156 void set_capture_offset ();
157 std::string steal_write_source_name ();
158 void reset_write_sources (bool, bool force = false);
159 float playback_buffer_load () const;
160 float capture_buffer_load () const;
162 int do_flush (RunContext, bool force = false);
163 void set_pending_overwrite (bool);
164 int seek (framepos_t, bool complete_refill = false);
165 bool hidden () const;
166 int can_internal_playback_seek (framecnt_t);
167 int internal_playback_seek (framecnt_t);
168 void non_realtime_input_change ();
169 void non_realtime_locate (framepos_t);
170 void non_realtime_set_speed ();
171 int overwrite_existing_buffers ();
172 framecnt_t get_captured_frames (uint32_t n = 0) const;
173 int set_loop (Location *);
174 void transport_looped (framepos_t);
175 bool realtime_set_speed (double, bool);
176 void transport_stopped_wallclock (struct tm &, time_t, bool);
177 bool pending_overwrite () const;
178 double speed () const;
179 void prepare_to_stop (framepos_t, framepos_t);
180 void set_slaved (bool);
181 ChanCount n_channels ();
182 framepos_t get_capture_start_frame (uint32_t n = 0) const;
183 AlignStyle alignment_style () const;
184 AlignChoice alignment_choice () const;
185 framepos_t current_capture_start () const;
186 framepos_t current_capture_end () const;
187 void playlist_modified ();
188 int use_playlist (boost::shared_ptr<Playlist>);
189 void set_align_style (AlignStyle, bool force=false);
190 void set_align_choice (AlignChoice, bool force=false);
191 int use_copy_playlist ();
192 int use_new_playlist ();
193 void adjust_playback_buffering ();
194 void adjust_capture_buffering ();
196 PBD::Signal0<void> DiskstreamChanged;
197 PBD::Signal0<void> FreezeChange;
198 /* Emitted when our diskstream is set to use a different playlist */
199 PBD::Signal0<void> PlaylistChanged;
200 PBD::Signal0<void> SpeedChanged;
201 PBD::Signal0<void> AlignmentStyleChanged;
204 XMLNode& state (bool full);
206 boost::shared_ptr<Diskstream> _diskstream;
207 MeterPoint _saved_meter_point;
210 boost::shared_ptr<MonitorControl> _monitoring_control;
213 struct FreezeRecordProcessorInfo {
214 FreezeRecordProcessorInfo(XMLNode& st, boost::shared_ptr<Processor> proc)
215 : state (st), processor (proc) {}
218 boost::shared_ptr<Processor> processor;
222 struct FreezeRecord {
224 : have_mementos(false)
229 boost::shared_ptr<Playlist> playlist;
230 std::vector<FreezeRecordProcessorInfo*> processor_info;
235 virtual void set_state_part_two () = 0;
237 FreezeRecord _freeze_record;
238 XMLNode* pending_state;
241 void maybe_declick (BufferSet&, framecnt_t, int);
243 boost::shared_ptr<AutomationControl> _record_enable_control;
244 boost::shared_ptr<AutomationControl> _record_safe_control;
246 virtual void record_enable_changed (bool, PBD::Controllable::GroupControlDisposition);
247 virtual void record_safe_changed (bool, PBD::Controllable::GroupControlDisposition);
249 framecnt_t check_initial_delay (framecnt_t nframes, framepos_t&);
250 virtual void monitoring_changed (bool, PBD::Controllable::GroupControlDisposition);
254 virtual boost::shared_ptr<Diskstream> diskstream_factory (XMLNode const &) = 0;
256 void diskstream_playlist_changed ();
257 void diskstream_speed_changed ();
258 void diskstream_alignment_style_changed ();
259 void parameter_changed (std::string const & p);
261 std::string _diskstream_name;
264 }; /* namespace ARDOUR*/
267 DEFINE_ENUM_CONVERT(ARDOUR::Track::FreezeState);
270 #endif /* __ardour_track_h__ */