2 Copyright (C) 2000-2006 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.
20 #ifndef __ardour_diskstream_h__
21 #define __ardour_diskstream_h__
30 #include <sigc++/signal.h>
32 #include <boost/utility.hpp>
34 #include "evoral/types.hpp"
36 #include "ardour/ardour.h"
37 #include "ardour/chan_count.h"
38 #include "ardour/location.h"
39 #include "ardour/session_object.h"
40 #include "ardour/types.h"
41 #include "ardour/utils.h"
54 class Diskstream : public SessionObject, public boost::noncopyable
64 Diskstream (Session &, const std::string& name, Flag f = Recordable);
65 Diskstream (Session &, const XMLNode&);
66 virtual ~Diskstream();
68 bool set_name (const std::string& str);
70 boost::shared_ptr<ARDOUR::IO> io() const { return _io; }
71 void set_route (ARDOUR::Route&);
73 virtual float playback_buffer_load() const = 0;
74 virtual float capture_buffer_load() const = 0;
76 void set_flag (Flag f) { _flags = Flag (_flags | f); }
77 void unset_flag (Flag f) { _flags = Flag (_flags & ~f); }
79 AlignStyle alignment_style() const { return _alignment_style; }
80 void set_align_style (AlignStyle);
81 void set_persistent_align_style (AlignStyle a) { _persistent_alignment_style = a; }
83 nframes_t roll_delay() const { return _roll_delay; }
84 void set_roll_delay (nframes_t);
86 bool record_enabled() const { return g_atomic_int_get (&_record_enabled); }
87 virtual void set_record_enabled (bool yn) = 0;
88 virtual void get_input_sources () = 0;
90 bool destructive() const { return _flags & Destructive; }
91 virtual int set_destructive (bool /*yn*/) { return -1; }
92 virtual int set_non_layered (bool /*yn*/) { return -1; }
93 virtual bool can_become_destructive (bool& /*requires_bounce*/) const { return false; }
95 bool hidden() const { return _flags & Hidden; }
96 bool recordable() const { return _flags & Recordable; }
97 bool non_layered() const { return _flags & NonLayered; }
98 bool reversed() const { return _actual_speed < 0.0f; }
99 double speed() const { return _visible_speed; }
101 virtual void punch_in() {}
102 virtual void punch_out() {}
104 void set_speed (double);
105 void non_realtime_set_speed ();
106 virtual void non_realtime_locate (nframes_t /*location*/) {};
107 virtual void playlist_modified ();
109 boost::shared_ptr<Playlist> playlist () { return _playlist; }
111 virtual int use_playlist (boost::shared_ptr<Playlist>);
112 virtual int use_new_playlist () = 0;
113 virtual int use_copy_playlist () = 0;
115 nframes_t current_capture_start() const { return capture_start_frame; }
116 nframes_t current_capture_end() const { return capture_start_frame + capture_captured; }
117 nframes_t get_capture_start_frame (uint32_t n=0);
118 nframes_t get_captured_frames (uint32_t n=0);
120 ChanCount n_channels() { return _n_channels; }
122 static nframes_t disk_io_frames() { return disk_io_chunk_frames; }
123 static void set_disk_io_chunk_frames (uint32_t n) { disk_io_chunk_frames = n; }
126 virtual XMLNode& get_state(void) = 0;
127 virtual int set_state(const XMLNode&, int version) = 0;
129 virtual void monitor_input (bool) {}
131 nframes_t capture_offset() const { return _capture_offset; }
132 virtual void set_capture_offset ();
134 bool slaved() const { return _slaved; }
135 void set_slaved(bool yn) { _slaved = yn; }
137 int set_loop (Location *loc);
139 std::list<boost::shared_ptr<Region> >& last_capture_regions () { return _last_capture_regions; }
141 void handle_input_change (IOChange, void *src);
143 void remove_region_from_last_capture (boost::weak_ptr<Region> wregion);
145 void move_processor_automation (boost::weak_ptr<Processor>,
146 std::list< Evoral::RangeMove<nframes_t> > const &);
148 sigc::signal<void> RecordEnableChanged;
149 sigc::signal<void> SpeedChanged;
150 sigc::signal<void> ReverseChanged;
151 sigc::signal<void> PlaylistChanged;
152 sigc::signal<void> AlignmentStyleChanged;
153 sigc::signal<void,Location *> LoopSet;
155 static sigc::signal<void> DiskOverrun;
156 static sigc::signal<void> DiskUnderrun;
159 friend class Session;
162 /* the Session is the only point of access for these because they require
163 * that the Session is "inactive" while they are called.
166 virtual void set_pending_overwrite (bool) = 0;
167 virtual int overwrite_existing_buffers () = 0;
168 virtual void set_block_size (nframes_t) = 0;
169 virtual int internal_playback_seek (nframes_t distance) = 0;
170 virtual int can_internal_playback_seek (nframes_t distance) = 0;
171 virtual int rename_write_sources () = 0;
172 virtual void reset_write_sources (bool, bool force = false) = 0;
173 virtual void non_realtime_input_change () = 0;
175 uint32_t read_data_count() const { return _read_data_count; }
176 uint32_t write_data_count() const { return _write_data_count; }
179 friend class Auditioner;
180 virtual int seek (nframes_t which_sample, bool complete_refill = false) = 0;
185 virtual void prepare ();
186 virtual int process (nframes_t transport_frame, nframes_t nframes, bool can_record, bool rec_monitors_input) = 0;
187 virtual bool commit (nframes_t nframes) = 0;
188 virtual void recover (); /* called if commit will not be called, but process was */
192 enum TransitionType {
197 struct CaptureTransition {
199 nframes_t capture_val; ///< The start or end file frame position
202 /* The two central butler operations */
203 virtual int do_flush (RunContext context, bool force = false) = 0;
204 virtual int do_refill () = 0;
206 /** For non-butler contexts (allocates temporary working buffers) */
207 virtual int do_refill_with_alloc() = 0;
209 /* XXX fix this redundancy ... */
211 virtual void playlist_changed (Change);
212 virtual void playlist_deleted (boost::weak_ptr<Playlist>);
213 virtual void playlist_ranges_moved (std::list< Evoral::RangeMove<nframes_t> > const &);
215 virtual void transport_stopped (struct tm&, time_t, bool abort) = 0;
216 virtual void transport_looped (nframes_t transport_frame) = 0;
223 virtual void init (Flag);
225 virtual int use_new_write_source (uint32_t n=0) = 0;
227 virtual int find_and_use_playlist (const std::string&) = 0;
229 virtual void allocate_temporary_buffers () = 0;
231 virtual bool realtime_set_speed (double, bool global_change);
233 std::list<boost::shared_ptr<Region> > _last_capture_regions;
235 virtual int use_pending_capture_data (XMLNode& node) = 0;
237 virtual void check_record_status (nframes_t transport_frame, nframes_t nframes, bool can_record);
238 virtual void prepare_record_status (nframes_t /*capture_start_frame*/) {}
239 virtual void set_align_style_from_io() {}
240 virtual void setup_destructive_playlist () {}
241 virtual void use_destructive_playlist () {}
243 void calculate_record_range(OverlapType ot, sframes_t transport_frame, nframes_t nframes,
244 nframes_t& rec_nframes, nframes_t& rec_offset);
246 static nframes_t disk_io_chunk_frames;
247 std::vector<CaptureInfo*> capture_info;
248 Glib::Mutex capture_info_lock;
250 uint32_t i_am_the_modifier;
252 boost::shared_ptr<ARDOUR::IO> _io;
254 ChanCount _n_channels;
256 boost::shared_ptr<Playlist> _playlist;
258 mutable gint _record_enabled;
259 double _visible_speed;
260 double _actual_speed;
261 /* items needed for speed change logic */
262 bool _buffer_reallocation_required;
266 nframes_t capture_start_frame;
267 nframes_t capture_captured;
269 nframes_t adjust_capture_position;
270 nframes_t _capture_offset;
271 nframes_t _roll_delay;
272 nframes_t first_recordable_frame;
273 nframes_t last_recordable_frame;
274 int last_possibly_recording;
275 AlignStyle _alignment_style;
279 Location* loop_location;
280 nframes_t overwrite_frame;
281 off_t overwrite_offset;
282 bool pending_overwrite;
283 bool overwrite_queued;
284 IOChange input_change_pending;
285 nframes_t wrap_buffer_size;
286 nframes_t speed_buffer_size;
289 double _target_speed;
291 nframes_t file_frame;
292 nframes_t playback_sample;
293 nframes_t playback_distance;
294 bool commit_should_unlock;
296 uint32_t _read_data_count;
297 uint32_t _write_data_count;
300 AlignStyle _persistent_alignment_style;
301 bool first_input_change;
303 Glib::Mutex state_lock;
305 nframes_t scrub_start;
306 nframes_t scrub_buffer_size;
307 nframes_t scrub_offset;
309 sigc::connection ports_created_c;
310 sigc::connection plmod_connection;
311 sigc::connection plgone_connection;
312 sigc::connection plregion_connection;
313 sigc::connection ic_connection;
317 void route_going_away ();
320 }; /* namespace ARDOUR */
322 #endif /* __ardour_diskstream_h__ */