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 <boost/utility.hpp>
32 #include "evoral/types.hpp"
34 #include "ardour/ardour.h"
35 #include "ardour/chan_count.h"
36 #include "ardour/location.h"
37 #include "ardour/session_object.h"
38 #include "ardour/types.h"
39 #include "ardour/utils.h"
52 class Diskstream : public SessionObject, public boost::noncopyable
62 Diskstream (Session &, const std::string& name, Flag f = Recordable);
63 Diskstream (Session &, const XMLNode&);
64 virtual ~Diskstream();
66 bool set_name (const std::string& str);
68 boost::shared_ptr<ARDOUR::IO> io() const { return _io; }
69 void set_route (ARDOUR::Route&);
71 virtual float playback_buffer_load() const = 0;
72 virtual float capture_buffer_load() const = 0;
74 void set_flag (Flag f) { _flags = Flag (_flags | f); }
75 void unset_flag (Flag f) { _flags = Flag (_flags & ~f); }
77 AlignStyle alignment_style() const { return _alignment_style; }
78 void set_align_style (AlignStyle);
79 void set_persistent_align_style (AlignStyle a) { _persistent_alignment_style = a; }
81 nframes_t roll_delay() const { return _roll_delay; }
82 void set_roll_delay (nframes_t);
84 bool record_enabled() const { return g_atomic_int_get (&_record_enabled); }
85 virtual void set_record_enabled (bool yn) = 0;
86 virtual void get_input_sources () = 0;
88 bool destructive() const { return _flags & Destructive; }
89 virtual int set_destructive (bool /*yn*/) { return -1; }
90 virtual int set_non_layered (bool /*yn*/) { return -1; }
91 virtual bool can_become_destructive (bool& /*requires_bounce*/) const { return false; }
93 bool hidden() const { return _flags & Hidden; }
94 bool recordable() const { return _flags & Recordable; }
95 bool non_layered() const { return _flags & NonLayered; }
96 bool reversed() const { return _actual_speed < 0.0f; }
97 double speed() const { return _visible_speed; }
99 virtual void punch_in() {}
100 virtual void punch_out() {}
102 void set_speed (double);
103 void non_realtime_set_speed ();
104 virtual void non_realtime_locate (nframes_t /*location*/) {};
105 virtual void playlist_modified ();
107 boost::shared_ptr<Playlist> playlist () { return _playlist; }
109 virtual int use_playlist (boost::shared_ptr<Playlist>);
110 virtual int use_new_playlist () = 0;
111 virtual int use_copy_playlist () = 0;
113 nframes_t current_capture_start() const { return capture_start_frame; }
114 nframes_t current_capture_end() const { return capture_start_frame + capture_captured; }
115 nframes_t get_capture_start_frame (uint32_t n=0);
116 nframes_t get_captured_frames (uint32_t n=0);
118 ChanCount n_channels() { return _n_channels; }
120 static nframes_t disk_io_frames() { return disk_io_chunk_frames; }
121 static void set_disk_io_chunk_frames (uint32_t n) { disk_io_chunk_frames = n; }
124 virtual XMLNode& get_state(void) = 0;
125 virtual int set_state(const XMLNode&, int version) = 0;
127 virtual void monitor_input (bool) {}
129 nframes_t capture_offset() const { return _capture_offset; }
130 virtual void set_capture_offset ();
132 bool slaved() const { return _slaved; }
133 void set_slaved(bool yn) { _slaved = yn; }
135 int set_loop (Location *loc);
137 std::list<boost::shared_ptr<Region> >& last_capture_regions () { return _last_capture_regions; }
139 void handle_input_change (IOChange, void *src);
141 void remove_region_from_last_capture (boost::weak_ptr<Region> wregion);
143 void move_processor_automation (boost::weak_ptr<Processor>,
144 std::list< Evoral::RangeMove<nframes_t> > const &);
146 boost::signals2::signal<void()> RecordEnableChanged;
147 boost::signals2::signal<void()> SpeedChanged;
148 boost::signals2::signal<void()> ReverseChanged;
149 boost::signals2::signal<void()> PlaylistChanged;
150 boost::signals2::signal<void()> AlignmentStyleChanged;
151 boost::signals2::signal<void(Location *)> LoopSet;
153 static boost::signals2::signal<void()> DiskOverrun;
154 static boost::signals2::signal<void()> DiskUnderrun;
157 friend class Session;
160 /* the Session is the only point of access for these because they require
161 * that the Session is "inactive" while they are called.
164 virtual void set_pending_overwrite (bool) = 0;
165 virtual int overwrite_existing_buffers () = 0;
166 virtual void set_block_size (nframes_t) = 0;
167 virtual int internal_playback_seek (nframes_t distance) = 0;
168 virtual int can_internal_playback_seek (nframes_t distance) = 0;
169 virtual int rename_write_sources () = 0;
170 virtual void reset_write_sources (bool, bool force = false) = 0;
171 virtual void non_realtime_input_change () = 0;
173 uint32_t read_data_count() const { return _read_data_count; }
174 uint32_t write_data_count() const { return _write_data_count; }
177 friend class Auditioner;
178 virtual int seek (nframes_t which_sample, bool complete_refill = false) = 0;
183 virtual void prepare ();
184 virtual int process (nframes_t transport_frame, nframes_t nframes, bool can_record, bool rec_monitors_input) = 0;
185 virtual bool commit (nframes_t nframes) = 0;
186 virtual void recover (); /* called if commit will not be called, but process was */
190 enum TransitionType {
195 struct CaptureTransition {
197 nframes_t capture_val; ///< The start or end file frame position
200 /* The two central butler operations */
201 virtual int do_flush (RunContext context, bool force = false) = 0;
202 virtual int do_refill () = 0;
204 /** For non-butler contexts (allocates temporary working buffers) */
205 virtual int do_refill_with_alloc() = 0;
207 /* XXX fix this redundancy ... */
209 virtual void playlist_changed (Change);
210 virtual void playlist_deleted (boost::weak_ptr<Playlist>);
211 virtual void playlist_ranges_moved (std::list< Evoral::RangeMove<nframes_t> > const &);
213 virtual void transport_stopped (struct tm&, time_t, bool abort) = 0;
214 virtual void transport_looped (nframes_t transport_frame) = 0;
221 virtual void init (Flag);
223 virtual int use_new_write_source (uint32_t n=0) = 0;
225 virtual int find_and_use_playlist (const std::string&) = 0;
227 virtual void allocate_temporary_buffers () = 0;
229 virtual bool realtime_set_speed (double, bool global_change);
231 std::list<boost::shared_ptr<Region> > _last_capture_regions;
233 virtual int use_pending_capture_data (XMLNode& node) = 0;
235 virtual void check_record_status (nframes_t transport_frame, nframes_t nframes, bool can_record);
236 virtual void prepare_record_status (nframes_t /*capture_start_frame*/) {}
237 virtual void set_align_style_from_io() {}
238 virtual void setup_destructive_playlist () {}
239 virtual void use_destructive_playlist () {}
241 void calculate_record_range(OverlapType ot, sframes_t transport_frame, nframes_t nframes,
242 nframes_t& rec_nframes, nframes_t& rec_offset);
244 static nframes_t disk_io_chunk_frames;
245 std::vector<CaptureInfo*> capture_info;
246 Glib::Mutex capture_info_lock;
248 uint32_t i_am_the_modifier;
250 boost::shared_ptr<ARDOUR::IO> _io;
252 ChanCount _n_channels;
254 boost::shared_ptr<Playlist> _playlist;
256 mutable gint _record_enabled;
257 double _visible_speed;
258 double _actual_speed;
259 /* items needed for speed change logic */
260 bool _buffer_reallocation_required;
264 nframes_t capture_start_frame;
265 nframes_t capture_captured;
267 nframes_t adjust_capture_position;
268 nframes_t _capture_offset;
269 nframes_t _roll_delay;
270 nframes_t first_recordable_frame;
271 nframes_t last_recordable_frame;
272 int last_possibly_recording;
273 AlignStyle _alignment_style;
277 Location* loop_location;
278 nframes_t overwrite_frame;
279 off_t overwrite_offset;
280 bool pending_overwrite;
281 bool overwrite_queued;
282 IOChange input_change_pending;
283 nframes_t wrap_buffer_size;
284 nframes_t speed_buffer_size;
287 double _target_speed;
289 nframes_t file_frame;
290 nframes_t playback_sample;
291 nframes_t playback_distance;
292 bool commit_should_unlock;
294 uint32_t _read_data_count;
295 uint32_t _write_data_count;
298 AlignStyle _persistent_alignment_style;
299 bool first_input_change;
301 Glib::Mutex state_lock;
303 nframes_t scrub_start;
304 nframes_t scrub_buffer_size;
305 nframes_t scrub_offset;
307 PBD::ScopedConnectionList playlist_connections;
309 boost::signals2::scoped_connection ic_connection;
313 void route_going_away ();
316 }; /* namespace ARDOUR */
318 #endif /* __ardour_diskstream_h__ */