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.
18 $Id: diskstream.cc 567 2006-06-07 14:54:12Z trutkin $
34 #include <pbd/error.h>
35 #include <pbd/basename.h>
36 #include <glibmm/thread.h>
37 #include <pbd/xml++.h>
39 #include <ardour/ardour.h>
40 #include <ardour/audioengine.h>
41 #include <ardour/diskstream.h>
42 #include <ardour/utils.h>
43 #include <ardour/configuration.h>
44 #include <ardour/audiofilesource.h>
45 #include <ardour/destructive_filesource.h>
46 #include <ardour/send.h>
47 #include <ardour/playlist.h>
48 #include <ardour/cycle_timer.h>
49 #include <ardour/region.h>
55 using namespace ARDOUR;
58 jack_nframes_t Diskstream::disk_io_chunk_frames = 0;
60 sigc::signal<void,Diskstream*> Diskstream::DiskstreamCreated;
61 //sigc::signal<void,list<AudioFileSource*>*> Diskstream::DeleteSources;
62 sigc::signal<void> Diskstream::DiskOverrun;
63 sigc::signal<void> Diskstream::DiskUnderrun;
65 Diskstream::Diskstream (Session &sess, const string &name, Flag flag)
73 Diskstream::Diskstream (Session& sess, const XMLNode& node)
81 Diskstream::init (Flag f)
86 _alignment_style = ExistingMaterial;
87 _persistent_alignment_style = ExistingMaterial;
88 first_input_change = true;
89 i_am_the_modifier = 0;
90 g_atomic_int_set (&_record_enabled, 0);
91 was_recording = false;
92 capture_start_frame = 0;
94 _visible_speed = 1.0f;
96 _buffer_reallocation_required = false;
97 _seek_required = false;
98 first_recordable_frame = max_frames;
99 last_recordable_frame = max_frames;
104 adjust_capture_position = 0;
105 last_possibly_recording = 0;
107 wrap_buffer_size = 0;
108 speed_buffer_size = 0;
110 phi = (uint64_t) (0x1000000);
113 playback_distance = 0;
114 _read_data_count = 0;
115 _write_data_count = 0;
117 pending_overwrite = false;
119 overwrite_queued = false;
120 input_change_pending = NoChange;
125 Diskstream::~Diskstream ()
127 // Taken by derived class destrctors.. assure lock?
128 //Glib::Mutex::Lock lm (state_lock);
135 Diskstream::set_io (IO& io)
138 set_align_style_from_io ();
142 Diskstream::handle_input_change (IOChange change, void *src)
144 Glib::Mutex::Lock lm (state_lock);
146 if (!(input_change_pending & change)) {
147 input_change_pending = IOChange (input_change_pending|change);
148 _session.request_input_change_handling ();
153 Diskstream::non_realtime_set_speed ()
155 if (_buffer_reallocation_required)
157 Glib::Mutex::Lock lm (state_lock);
158 allocate_temporary_buffers ();
160 _buffer_reallocation_required = false;
163 if (_seek_required) {
164 if (speed() != 1.0f || speed() != -1.0f) {
165 seek ((jack_nframes_t) (_session.transport_frame() * (double) speed()), true);
168 seek (_session.transport_frame(), true);
171 _seek_required = false;
176 Diskstream::realtime_set_speed (double sp, bool global)
178 bool changed = false;
179 double new_speed = sp * _session.transport_speed();
181 if (_visible_speed != sp) {
186 if (new_speed != _actual_speed) {
188 jack_nframes_t required_wrap_size = (jack_nframes_t) floor (_session.get_block_size() *
189 fabs (new_speed)) + 1;
191 if (required_wrap_size > wrap_buffer_size) {
192 _buffer_reallocation_required = true;
195 _actual_speed = new_speed;
196 phi = (uint64_t) (0x1000000 * fabs(_actual_speed));
201 _seek_required = true;
203 SpeedChanged (); /* EMIT SIGNAL */
206 return _buffer_reallocation_required || _seek_required;
210 Diskstream::prepare ()
213 playback_distance = 0;
217 Diskstream::recover ()
224 Diskstream::set_capture_offset ()
227 /* can't capture, so forget it */
231 _capture_offset = _io->input_latency();
235 Diskstream::set_align_style (AlignStyle a)
237 if (record_enabled() && _session.actively_recording()) {
241 if (a != _alignment_style) {
242 _alignment_style = a;
243 AlignmentStyleChanged ();
248 Diskstream::set_loop (Location *location)
251 if (location->start() >= location->end()) {
252 error << string_compose(_("Location \"%1\" not valid for track loop (start >= end)"), location->name()) << endl;
257 loop_location = location;
259 LoopSet (location); /* EMIT SIGNAL */
264 Diskstream::get_capture_start_frame (uint32_t n)
266 Glib::Mutex::Lock lm (capture_info_lock);
268 if (capture_info.size() > n) {
269 return capture_info[n]->start;
272 return capture_start_frame;
277 Diskstream::get_captured_frames (uint32_t n)
279 Glib::Mutex::Lock lm (capture_info_lock);
281 if (capture_info.size() > n) {
282 return capture_info[n]->frames;
285 return capture_captured;
290 Diskstream::set_roll_delay (jack_nframes_t nframes)
292 _roll_delay = nframes;
296 Diskstream::set_speed (double sp)
298 _session.request_diskstream_speed (*this, sp);
300 /* to force a rebuffering at the right place */
305 Diskstream::use_playlist (Playlist* playlist)
308 Glib::Mutex::Lock lm (state_lock);
310 if (playlist == _playlist) {
314 plstate_connection.disconnect();
315 plmod_connection.disconnect ();
316 plgone_connection.disconnect ();
322 _playlist = playlist;
325 if (!in_set_state && recordable()) {
326 reset_write_sources (false);
329 plstate_connection = _playlist->StateChanged.connect (mem_fun (*this, &Diskstream::playlist_changed));
330 plmod_connection = _playlist->Modified.connect (mem_fun (*this, &Diskstream::playlist_modified));
331 plgone_connection = _playlist->GoingAway.connect (mem_fun (*this, &Diskstream::playlist_deleted));
334 if (!overwrite_queued) {
335 _session.request_overwrite_buffer (this);
336 overwrite_queued = true;
339 PlaylistChanged (); /* EMIT SIGNAL */
340 _session.set_dirty ();
346 Diskstream::playlist_changed (Change ignored)
348 playlist_modified ();
352 Diskstream::playlist_modified ()
354 if (!i_am_the_modifier && !overwrite_queued) {
355 _session.request_overwrite_buffer (this);
356 overwrite_queued = true;
361 Diskstream::playlist_deleted (Playlist* pl)
363 /* this catches an ordering issue with session destruction. playlists
364 are destroyed before diskstreams. we have to invalidate any handles
365 we have to the playlist.
372 Diskstream::set_name (string str, void *src)
376 playlist()->set_name (str);
379 if (!in_set_state && recordable()) {
380 /* rename existing capture files so that they have the correct name */
381 return rename_write_sources ();
391 Diskstream::set_destructive (bool yn)
393 if (yn != destructive()) {
394 reset_write_sources (true, true);
396 _flags |= Destructive;
398 _flags &= ~Destructive;