libs/ardour/session_butler.cc

   1 /*
   2  * Copyright (C) 1999-2019 Paul Davis <paul@linuxaudiosystems.com>
   3  * Copyright (C) 2005-2006 Taybin Rutkin <taybin@taybin.com>
   4  * Copyright (C) 2006-2014 David Robillard <d@drobilla.net>
   5  * Copyright (C) 2006 Jesse Chappell <jesse@essej.net>
   6  * Copyright (C) 2010-2012 Carl Hetherington <carl@carlh.net>
   7  *
   8  * This program is free software; you can redistribute it and/or modify
   9  * it under the terms of the GNU General Public License as published by
  10  * the Free Software Foundation; either version 2 of the License, or
  11  * (at your option) any later version.
  12  *
  13  * This program is distributed in the hope that it will be useful,
  14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16  * GNU General Public License for more details.
  17  *
  18  * You should have received a copy of the GNU General Public License along
  19  * with this program; if not, write to the Free Software Foundation, Inc.,
  20  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  21  */
  22
  23 #include "pbd/error.h"
  24 #include "pbd/pthread_utils.h"
  25 #include "pbd/stacktrace.h"
  26
  27 #include "ardour/butler.h"
  28 #include "ardour/disk_reader.h"
  29 #include "ardour/route.h"
  30 #include "ardour/session.h"
  31 #include "ardour/session_event.h"
  32 #include "ardour/track.h"
  33 #include "ardour/types.h"
  34
  35 #include "pbd/i18n.h"
  36
  37 using namespace std;
  38 using namespace ARDOUR;
  39 using namespace PBD;
  40
  41 /*---------------------------------------------------------------------------
  42  BUTLER THREAD
  43  ---------------------------------------------------------------------------*/
  44
  45 void
  46 Session::adjust_playback_buffering ()
  47 {
  48         request_stop (false, false);
  49         SessionEvent *ev = new SessionEvent (SessionEvent::AdjustPlaybackBuffering, SessionEvent::Add, SessionEvent::Immediate, 0, 0, 0.0);
  50         queue_event (ev);
  51 }
  52
  53 void
  54 Session::adjust_capture_buffering ()
  55 {
  56         request_stop (false, false);
  57         SessionEvent *ev = new SessionEvent (SessionEvent::AdjustCaptureBuffering, SessionEvent::Add, SessionEvent::Immediate, 0, 0, 0.0);
  58         queue_event (ev);
  59 }
  60
  61 void
  62 Session::schedule_playback_buffering_adjustment ()
  63 {
  64         add_post_transport_work (PostTransportAdjustPlaybackBuffering);
  65         DiskReader::inc_no_disk_output ();
  66         _butler->schedule_transport_work ();
  67 }
  68
  69 void
  70 Session::schedule_capture_buffering_adjustment ()
  71 {
  72         add_post_transport_work (PostTransportAdjustCaptureBuffering);
  73         _butler->schedule_transport_work ();
  74 }
  75
  76 void
  77 Session::request_overwrite_buffer (boost::shared_ptr<Route> r)
  78 {
  79         boost::shared_ptr<Track> t = boost::dynamic_pointer_cast<Track> (r);
  80         if (!t) {
  81                 return;
  82         }
  83
  84         SessionEvent *ev = new SessionEvent (SessionEvent::Overwrite, SessionEvent::Add, SessionEvent::Immediate, 0, 0, 0.0);
  85         ev->set_ptr (t.get());
  86         queue_event (ev);
  87 }
  88
  89 /** Process thread. */
  90 void
  91 Session::overwrite_some_buffers (Track* t)
  92 {
  93         if (actively_recording()) {
  94                 return;
  95         }
  96
  97         if (t) {
  98
  99                 t->set_pending_overwrite ();
 100
 101         } else {
 102
 103                 boost::shared_ptr<RouteList> rl = routes.reader();
 104                 for (RouteList::iterator i = rl->begin(); i != rl->end(); ++i) {
 105                         boost::shared_ptr<Track> tr = boost::dynamic_pointer_cast<Track> (*i);
 106                         if (tr) {
 107                                 tr->set_pending_overwrite ();
 108                         }
 109                 }
 110         }
 111
 112         add_post_transport_work (PostTransportOverWrite);
 113
 114         _butler->schedule_transport_work ();
 115 }
 116
 117 uint32_t
 118 Session::playback_load ()
 119 {
 120         return (uint32_t) g_atomic_int_get (&_playback_load);
 121 }
 122
 123 uint32_t
 124 Session::capture_load ()
 125 {
 126         return (uint32_t) g_atomic_int_get (&_capture_load);
 127 }