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__
23 #include <sigc++/signal.h>
33 #include <pbd/fastlog.h>
34 #include <pbd/ringbufferNPT.h>
35 #include <pbd/stateful.h>
36 #include <pbd/statefuldestructible.h>
38 #include <ardour/ardour.h>
39 #include <ardour/configuration.h>
40 #include <ardour/session.h>
41 #include <ardour/route_group.h>
42 #include <ardour/route.h>
43 #include <ardour/port.h>
44 #include <ardour/utils.h>
56 class Diskstream : public SessionObject
65 Diskstream (Session &, const string& name, Flag f = Recordable);
66 Diskstream (Session &, const XMLNode&);
67 virtual ~Diskstream();
69 bool set_name (const string& str);
71 ARDOUR::IO* io() const { return _io; }
72 void set_io (ARDOUR::IO& io);
74 virtual float playback_buffer_load() const = 0;
75 virtual float capture_buffer_load() const = 0;
77 void set_flag (Flag f) { _flags = Flag (_flags | f); }
78 void unset_flag (Flag f) { _flags = Flag (_flags & ~f); }
80 AlignStyle alignment_style() const { return _alignment_style; }
81 void set_align_style (AlignStyle);
82 void set_persistent_align_style (AlignStyle a) { _persistent_alignment_style = a; }
84 nframes_t roll_delay() const { return _roll_delay; }
85 void set_roll_delay (nframes_t);
87 bool record_enabled() const { return g_atomic_int_get (&_record_enabled); }
88 virtual void set_record_enabled (bool yn) = 0;
90 bool destructive() const { return _flags & Destructive; }
91 virtual int set_destructive (bool yn) { return -1; }
92 virtual bool can_become_destructive (bool& requires_bounce) const { return false; }
94 bool hidden() const { return _flags & Hidden; }
95 bool recordable() const { return _flags & Recordable; }
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& node) = 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 sigc::signal<void> RecordEnableChanged;
144 sigc::signal<void> SpeedChanged;
145 sigc::signal<void> ReverseChanged;
146 sigc::signal<void> PlaylistChanged;
147 sigc::signal<void> AlignmentStyleChanged;
148 sigc::signal<void,Location *> LoopSet;
150 static sigc::signal<void> DiskOverrun;
151 static sigc::signal<void> DiskUnderrun;
154 friend class Session;
156 /* the Session is the only point of access for these because they require
157 * that the Session is "inactive" while they are called.
160 virtual void set_pending_overwrite (bool) = 0;
161 virtual int overwrite_existing_buffers () = 0;
162 virtual void set_block_size (nframes_t) = 0;
163 virtual int internal_playback_seek (nframes_t distance) = 0;
164 virtual int can_internal_playback_seek (nframes_t distance) = 0;
165 virtual int rename_write_sources () = 0;
166 virtual void reset_write_sources (bool, bool force = false) = 0;
167 virtual void non_realtime_input_change () = 0;
169 uint32_t read_data_count() const { return _read_data_count; }
170 uint32_t write_data_count() const { return _write_data_count; }
173 friend class Auditioner;
174 virtual int seek (nframes_t which_sample, bool complete_refill = false) = 0;
179 virtual void prepare ();
180 virtual int process (nframes_t transport_frame, nframes_t nframes, nframes_t offset, bool can_record, bool rec_monitors_input) = 0;
181 virtual bool commit (nframes_t nframes) = 0;
182 virtual void recover (); /* called if commit will not be called, but process was */
186 enum TransitionType {
191 struct CaptureTransition {
193 nframes_t capture_val; ///< The start or end file frame position
196 /* The two central butler operations */
197 virtual int do_flush (Session::RunContext context, bool force = false) = 0;
198 virtual int do_refill () = 0;
200 /** For non-butler contexts (allocates temporary working buffers) */
201 virtual int do_refill_with_alloc() = 0;
203 /* XXX fix this redundancy ... */
205 virtual void playlist_changed (Change);
206 virtual void playlist_deleted (boost::weak_ptr<Playlist>);
208 virtual void transport_stopped (struct tm&, time_t, bool abort) = 0;
209 virtual void transport_looped (nframes_t transport_frame) = 0;
216 virtual void init (Flag);
218 virtual int use_new_write_source (uint32_t n=0) = 0;
220 virtual int find_and_use_playlist (const string&) = 0;
222 virtual void allocate_temporary_buffers () = 0;
224 virtual bool realtime_set_speed (double, bool global_change);
226 std::list<boost::shared_ptr<Region> > _last_capture_regions;
228 virtual int use_pending_capture_data (XMLNode& node) = 0;
230 virtual void get_input_sources () = 0;
231 virtual void check_record_status (nframes_t transport_frame, nframes_t nframes, bool can_record) = 0;
232 virtual void set_align_style_from_io() {}
233 virtual void setup_destructive_playlist () {}
234 virtual void use_destructive_playlist () {}
236 static nframes_t disk_io_chunk_frames;
237 std::vector<CaptureInfo*> capture_info;
238 Glib::Mutex capture_info_lock;
240 uint32_t i_am_the_modifier;
243 ChanCount _n_channels;
245 boost::shared_ptr<Playlist> _playlist;
247 mutable gint _record_enabled;
248 double _visible_speed;
249 double _actual_speed;
250 /* items needed for speed change logic */
251 bool _buffer_reallocation_required;
255 nframes_t capture_start_frame;
256 nframes_t capture_captured;
258 nframes_t adjust_capture_position;
259 nframes_t _capture_offset;
260 nframes_t _roll_delay;
261 nframes_t first_recordable_frame;
262 nframes_t last_recordable_frame;
263 int last_possibly_recording;
264 AlignStyle _alignment_style;
268 Location* loop_location;
269 nframes_t overwrite_frame;
270 off_t overwrite_offset;
271 bool pending_overwrite;
272 bool overwrite_queued;
273 IOChange input_change_pending;
274 nframes_t wrap_buffer_size;
275 nframes_t speed_buffer_size;
281 nframes_t file_frame;
282 nframes_t playback_sample;
283 nframes_t playback_distance;
284 bool commit_should_unlock;
286 uint32_t _read_data_count;
287 uint32_t _write_data_count;
290 AlignStyle _persistent_alignment_style;
291 bool first_input_change;
293 Glib::Mutex state_lock;
295 nframes_t scrub_start;
296 nframes_t scrub_buffer_size;
297 nframes_t scrub_offset;
299 sigc::connection ports_created_c;
300 sigc::connection plmod_connection;
301 sigc::connection plgone_connection;
306 }; /* namespace ARDOUR */
308 #endif /* __ardour_diskstream_h__ */