libs/ardour/session_butler.cc

   1 /*
   2     Copyright (C) 1999-2002 Paul Davis
   3
   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.
   8
   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.
  13
  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.
  17
  18 */
  19
  20 #include "pbd/error.h"
  21 #include "pbd/pthread_utils.h"
  22 #include "pbd/stacktrace.h"
  23
  24 #include "ardour/butler.h"
  25 #include "ardour/route.h"
  26 #include "ardour/session.h"
  27 #include "ardour/session_event.h"
  28 #include "ardour/track.h"
  29 #include "ardour/types.h"
  30
  31 #include "pbd/i18n.h"
  32
  33 using namespace std;
  34 using namespace ARDOUR;
  35 using namespace PBD;
  36
  37 /*---------------------------------------------------------------------------
  38  BUTLER THREAD
  39  ---------------------------------------------------------------------------*/
  40
  41 void
  42 Session::adjust_playback_buffering ()
  43 {
  44         request_stop (false, false);
  45         SessionEvent *ev = new SessionEvent (SessionEvent::AdjustPlaybackBuffering, SessionEvent::Add, SessionEvent::Immediate, 0, 0, 0.0);
  46         queue_event (ev);
  47 }
  48
  49 void
  50 Session::adjust_capture_buffering ()
  51 {
  52         request_stop (false, false);
  53         SessionEvent *ev = new SessionEvent (SessionEvent::AdjustCaptureBuffering, SessionEvent::Add, SessionEvent::Immediate, 0, 0, 0.0);
  54         queue_event (ev);
  55 }
  56
  57 void
  58 Session::schedule_playback_buffering_adjustment ()
  59 {
  60         add_post_transport_work (PostTransportAdjustPlaybackBuffering);
  61         _butler->schedule_transport_work ();
  62 }
  63
  64 void
  65 Session::schedule_capture_buffering_adjustment ()
  66 {
  67         add_post_transport_work (PostTransportAdjustCaptureBuffering);
  68         _butler->schedule_transport_work ();
  69 }
  70
  71 void
  72 Session::schedule_curve_reallocation ()
  73 {
  74         add_post_transport_work (PostTransportCurveRealloc);
  75         _butler->schedule_transport_work ();
  76 }
  77
  78 void
  79 Session::request_overwrite_buffer (boost::shared_ptr<Route> r)
  80 {
  81         boost::shared_ptr<Track> t = boost::dynamic_pointer_cast<Track> (r);
  82         if (!t) {
  83                 return;
  84         }
  85
  86         SessionEvent *ev = new SessionEvent (SessionEvent::Overwrite, SessionEvent::Add, SessionEvent::Immediate, 0, 0, 0.0);
  87         ev->set_ptr (t.get());
  88         queue_event (ev);
  89 }
  90
  91 /** Process thread. */
  92 void
  93 Session::overwrite_some_buffers (Track* t)
  94 {
  95         if (actively_recording()) {
  96                 return;
  97         }
  98
  99         if (t) {
 100
 101                 t->set_pending_overwrite (true);
 102
 103         } else {
 104
 105                 boost::shared_ptr<RouteList> rl = routes.reader();
 106                 for (RouteList::iterator i = rl->begin(); i != rl->end(); ++i) {
 107                         boost::shared_ptr<Track> tr = boost::dynamic_pointer_cast<Track> (*i);
 108                         if (tr) {
 109                                 tr->set_pending_overwrite (true);
 110                         }
 111                 }
 112         }
 113
 114         add_post_transport_work (PostTransportOverWrite);
 115         _butler->schedule_transport_work ();
 116 }
 117
 118 uint32_t
 119 Session::playback_load ()
 120 {
 121         return (uint32_t) g_atomic_int_get (&_playback_load);
 122 }
 123
 124 uint32_t
 125 Session::capture_load ()
 126 {
 127         return (uint32_t) g_atomic_int_get (&_capture_load);
 128 }