+ silence (nframes);
+
+ return _diskstream->process (_session.transport_frame(), nframes, can_record, need_butler);
+}
+
+void
+Track::set_diskstream (boost::shared_ptr<Diskstream> ds)
+{
+ _diskstream = ds;
+
+ ds->PlaylistChanged.connect_same_thread (*this, boost::bind (&Track::diskstream_playlist_changed, this));
+ diskstream_playlist_changed ();
+ ds->RecordEnableChanged.connect_same_thread (*this, boost::bind (&Track::diskstream_record_enable_changed, this));
+ ds->SpeedChanged.connect_same_thread (*this, boost::bind (&Track::diskstream_speed_changed, this));
+ ds->AlignmentStyleChanged.connect_same_thread (*this, boost::bind (&Track::diskstream_alignment_style_changed, this));
+}
+
+void
+Track::diskstream_playlist_changed ()
+{
+ PlaylistChanged (); /* EMIT SIGNAL */
+}
+
+void
+Track::diskstream_record_enable_changed ()
+{
+ RecordEnableChanged (); /* EMIT SIGNAL */
+}
+
+void
+Track::diskstream_speed_changed ()
+{
+ SpeedChanged (); /* EMIT SIGNAL */
+}
+
+void
+Track::diskstream_alignment_style_changed ()
+{
+ AlignmentStyleChanged (); /* EMIT SIGNAL */
+}
+
+boost::shared_ptr<Playlist>
+Track::playlist ()
+{
+ return _diskstream->playlist ();
+}
+
+void
+Track::monitor_input (bool m)
+{
+ _diskstream->monitor_input (m);
+}
+
+bool
+Track::destructive () const
+{
+ return _diskstream->destructive ();
+}
+
+list<boost::shared_ptr<Source> > &
+Track::last_capture_sources ()
+{
+ return _diskstream->last_capture_sources ();
+}
+
+void
+Track::set_capture_offset ()
+{
+ _diskstream->set_capture_offset ();
+}
+
+list<boost::shared_ptr<Source> >
+Track::steal_write_sources()
+{
+ return _diskstream->steal_write_sources ();
+}
+
+void
+Track::reset_write_sources (bool r, bool force)
+{
+ _diskstream->reset_write_sources (r, force);
+}
+
+float
+Track::playback_buffer_load () const
+{
+ return _diskstream->playback_buffer_load ();
+}
+
+float
+Track::capture_buffer_load () const
+{
+ return _diskstream->capture_buffer_load ();
+}
+
+int
+Track::do_refill ()
+{
+ return _diskstream->do_refill ();
+}
+
+int
+Track::do_flush (RunContext c, bool force)
+{
+ return _diskstream->do_flush (c, force);
+}
+
+void
+Track::set_pending_overwrite (bool o)
+{
+ _diskstream->set_pending_overwrite (o);
+}
+
+int
+Track::seek (framepos_t p, bool complete_refill)
+{
+ return _diskstream->seek (p, complete_refill);
+}
+
+bool
+Track::hidden () const
+{
+ return _diskstream->hidden ();
+}
+
+int
+Track::can_internal_playback_seek (framepos_t p)
+{
+ return _diskstream->can_internal_playback_seek (p);
+}
+
+int
+Track::internal_playback_seek (framepos_t p)
+{
+ return _diskstream->internal_playback_seek (p);
+}
+
+void
+Track::non_realtime_input_change ()
+{
+ _diskstream->non_realtime_input_change ();
+}
+
+void
+Track::non_realtime_locate (framepos_t p)
+{
+ _diskstream->non_realtime_locate (p);
+}
+
+void
+Track::non_realtime_set_speed ()
+{
+ _diskstream->non_realtime_set_speed ();
+}
+
+int
+Track::overwrite_existing_buffers ()
+{
+ return _diskstream->overwrite_existing_buffers ();
+}
+
+framecnt_t
+Track::get_captured_frames (uint32_t n) const
+{
+ return _diskstream->get_captured_frames (n);
+}
+
+int
+Track::set_loop (Location* l)
+{
+ return _diskstream->set_loop (l);
+}
+
+void
+Track::transport_looped (framepos_t p)
+{
+ _diskstream->transport_looped (p);
+}
+
+bool
+Track::realtime_set_speed (double s, bool g)
+{
+ return _diskstream->realtime_set_speed (s, g);
+}
+
+void
+Track::transport_stopped_wallclock (struct tm & n, time_t t, bool g)
+{
+ _diskstream->transport_stopped_wallclock (n, t, g);
+}
+
+bool
+Track::pending_overwrite () const
+{
+ return _diskstream->pending_overwrite ();
+}
+
+double
+Track::speed () const
+{
+ return _diskstream->speed ();
+}
+
+void
+Track::prepare_to_stop (framepos_t p)
+{
+ _diskstream->prepare_to_stop (p);
+}
+
+void
+Track::set_slaved (bool s)
+{
+ _diskstream->set_slaved (s);
+}
+
+ChanCount
+Track::n_channels ()
+{
+ return _diskstream->n_channels ();
+}
+
+framepos_t
+Track::get_capture_start_frame (uint32_t n) const
+{
+ return _diskstream->get_capture_start_frame (n);
+}
+
+AlignStyle
+Track::alignment_style () const
+{
+ return _diskstream->alignment_style ();
+}
+
+AlignChoice
+Track::alignment_choice () const
+{
+ return _diskstream->alignment_choice ();
+}
+
+framepos_t
+Track::current_capture_start () const
+{
+ return _diskstream->current_capture_start ();
+}
+
+framepos_t
+Track::current_capture_end () const
+{
+ return _diskstream->current_capture_end ();
+}
+
+void
+Track::playlist_modified ()
+{
+ _diskstream->playlist_modified ();
+}
+
+int
+Track::use_playlist (boost::shared_ptr<Playlist> p)
+{
+ return _diskstream->use_playlist (p);
+}
+
+int
+Track::use_copy_playlist ()
+{
+ return _diskstream->use_copy_playlist ();
+}
+
+int
+Track::use_new_playlist ()
+{
+ return _diskstream->use_new_playlist ();
+}
+
+uint32_t
+Track::read_data_count () const
+{
+ return _diskstream->read_data_count ();
+}
+
+void
+Track::set_align_style (AlignStyle s, bool force)
+{
+ _diskstream->set_align_style (s, force);
+}
+
+void
+Track::set_align_choice (AlignChoice s, bool force)
+{
+ _diskstream->set_align_choice (s, force);
+}
+
+uint32_t
+Track::write_data_count () const
+{
+ return _diskstream->write_data_count ();
+}
+
+PBD::ID const &
+Track::diskstream_id () const
+{
+ return _diskstream->id ();
+}
+
+void
+Track::set_block_size (pframes_t n)
+{
+ Route::set_block_size (n);
+ _diskstream->set_block_size (n);
+}
+
+void
+Track::adjust_playback_buffering ()
+{
+ if (_diskstream) {
+ _diskstream->adjust_playback_buffering ();
+ }
+}
+
+void
+Track::adjust_capture_buffering ()
+{
+ if (_diskstream) {
+ _diskstream->adjust_capture_buffering ();
+ }
+}
+
+bool
+Track::send_silence () const
+{
+ bool send_silence;
+
+ if (Config->get_tape_machine_mode()) {
+
+ /* ADATs work in a strange way..
+ they monitor input always when stopped.and auto-input is engaged.
+ */
+
+ if ((Config->get_monitoring_model() == SoftwareMonitoring)
+ && ((_monitoring & MonitorInput) || (_diskstream->record_enabled()))) {
+ send_silence = false;
+ } else {
+ send_silence = true;
+ }
+
+
+ } else {
+
+ /* Other machines switch to input on stop if the track is record enabled,
+ regardless of the auto input setting (auto input only changes the
+ monitoring state when the transport is rolling)
+ */
+
+ if ((Config->get_monitoring_model() == SoftwareMonitoring)
+ && ((_monitoring & MonitorInput) ||
+ (!(_monitoring & MonitorDisk) && (_session.config.get_auto_input () || _diskstream->record_enabled())))){
+ send_silence = false;
+ } else {
+ send_silence = true;
+ }
+ }
+
+ return send_silence;
+}
+
+void
+Track::maybe_declick (BufferSet& bufs, framecnt_t nframes, int declick)
+{
+ /* never declick if there is an internal generator - we just want it to
+ keep generating sound without interruption.
+ */
+
+ if (_have_internal_generator) {
+ return;
+ }
+
+ if (!declick) {
+ declick = _pending_declick;