Paul Davis
8e2f6b9e0f
git-svn-id: svn://localhost/ardour2/branches/3.0@8049 d708f5d6-7413-0410-9779-e7cbd77b26cf
1123 lines
27 KiB
C++
1123 lines
27 KiB
C++
/*
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Copyright (C) 1999-2002 Paul Davis
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*/
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#include <cmath>
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#include <cerrno>
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#include <algorithm>
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#include <unistd.h>
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#include "pbd/error.h"
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#include "pbd/enumwriter.h"
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#include <glibmm/thread.h>
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#include "ardour/ardour.h"
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#include "ardour/audioengine.h"
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#include "ardour/auditioner.h"
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#include "ardour/butler.h"
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#include "ardour/debug.h"
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#include "ardour/process_thread.h"
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#include "ardour/session.h"
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#include "ardour/slave.h"
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#include "ardour/timestamps.h"
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#include "ardour/graph.h"
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#include "ardour/audio_port.h"
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#include "midi++/manager.h"
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#include "midi++/mmc.h"
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#include "i18n.h"
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using namespace ARDOUR;
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using namespace PBD;
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using namespace std;
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/** Called by the audio engine when there is work to be done with JACK.
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* @param nframes Number of frames to process.
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*/
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void
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Session::process (nframes_t nframes)
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{
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MIDI::Manager::instance()->cycle_start(nframes);
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_silent = false;
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if (processing_blocked()) {
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_silent = true;
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return;
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}
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if (non_realtime_work_pending()) {
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if (!_butler->transport_work_requested ()) {
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post_transport ();
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}
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}
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_engine.main_thread()->get_buffers ();
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(this->*process_function) (nframes);
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_engine.main_thread()->drop_buffers ();
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// the ticker is for sending time information like MidiClock
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nframes_t transport_frames = transport_frame();
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BBT_Time transport_bbt;
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bbt_time(transport_frames, transport_bbt);
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Timecode::Time transport_timecode;
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timecode_time(transport_frames, transport_timecode);
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tick (transport_frames, transport_bbt, transport_timecode); /* EMIT SIGNAL */
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SendFeedback (); /* EMIT SIGNAL */
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MIDI::Manager::instance()->cycle_end();
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}
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int
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Session::fail_roll (nframes_t nframes)
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{
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return no_roll (nframes);
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}
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int
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Session::no_roll (nframes_t nframes)
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{
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nframes_t end_frame = _transport_frame + nframes; // FIXME: varispeed + no_roll ??
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int ret = 0;
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bool declick = get_transport_declick_required();
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boost::shared_ptr<RouteList> r = routes.reader ();
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if (_click_io) {
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_click_io->silence (nframes);
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}
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DEBUG_TRACE(DEBUG::Graph,"calling graph/no-roll\n");
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route_graph->routes_no_roll( nframes, _transport_frame, end_frame, non_realtime_work_pending(), actively_recording(), declick);
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/*
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for (RouteList::iterator i = r->begin(); i != r->end(); ++i) {
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if ((*i)->is_hidden()) {
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continue;
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}
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(*i)->set_pending_declick (declick);
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if ((*i)->no_roll (nframes, _transport_frame, end_frame, non_realtime_work_pending(),
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actively_recording(), declick)) {
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error << string_compose(_("Session: error in no roll for %1"), (*i)->name()) << endmsg;
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ret = -1;
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break;
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}
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}
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*/
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return ret;
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}
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int
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Session::process_routes (nframes_t nframes, bool& need_butler)
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{
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bool record_active;
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int declick = get_transport_declick_required();
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bool rec_monitors = get_rec_monitors_input();
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boost::shared_ptr<RouteList> r = routes.reader ();
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if (transport_sub_state & StopPendingCapture) {
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/* force a declick out */
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declick = -1;
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}
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record_active = actively_recording(); // || (get_record_enabled() && get_punch_in());
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const nframes_t start_frame = _transport_frame;
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const nframes_t end_frame = _transport_frame + (nframes_t)floor(nframes * _transport_speed);
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DEBUG_TRACE(DEBUG::Graph,"calling graph/process-routes\n");
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route_graph->process_routes( nframes, start_frame, end_frame, declick, record_active, rec_monitors, need_butler);
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/*
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for (RouteList::iterator i = r->begin(); i != r->end(); ++i) {
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int ret;
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if ((*i)->is_hidden()) {
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continue;
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}
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(*i)->set_pending_declick (declick);
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if ((ret = (*i)->roll (nframes, start_frame, end_frame, declick, record_active, rec_monitors, need_butler)) < 0) {
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stop_transport ();
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return -1;
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}
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}
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*/
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return 0;
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}
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int
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Session::silent_process_routes (nframes_t nframes, bool& need_butler)
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{
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bool record_active = actively_recording();
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int declick = get_transport_declick_required();
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bool rec_monitors = get_rec_monitors_input();
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boost::shared_ptr<RouteList> r = routes.reader ();
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if (transport_sub_state & StopPendingCapture) {
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/* force a declick out */
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declick = -1;
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}
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const nframes_t start_frame = _transport_frame;
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const nframes_t end_frame = _transport_frame + lrintf(nframes * _transport_speed);
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route_graph->silent_process_routes( nframes, start_frame, end_frame, record_active, rec_monitors, need_butler);
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/*
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for (RouteList::iterator i = r->begin(); i != r->end(); ++i) {
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int ret;
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if ((*i)->is_hidden()) {
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continue;
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}
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if ((ret = (*i)->silent_roll (nframes, start_frame, end_frame, record_active, rec_monitors, need_butler)) < 0) {
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stop_transport ();
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return -1;
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}
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}
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*/
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return 0;
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}
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void
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Session::get_track_statistics ()
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{
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float pworst = 1.0f;
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float cworst = 1.0f;
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boost::shared_ptr<RouteList> rl = routes.reader();
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for (RouteList::iterator i = rl->begin(); i != rl->end(); ++i) {
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boost::shared_ptr<Track> tr = boost::dynamic_pointer_cast<Track> (*i);
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if (!tr || tr->hidden()) {
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continue;
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}
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pworst = min (pworst, tr->playback_buffer_load());
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cworst = min (cworst, tr->capture_buffer_load());
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}
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g_atomic_int_set (&_playback_load, (uint32_t) floor (pworst * 100.0f));
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g_atomic_int_set (&_capture_load, (uint32_t) floor (cworst * 100.0f));
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if (actively_recording()) {
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set_dirty();
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}
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}
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/** Process callback used when the auditioner is not active */
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void
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Session::process_with_events (nframes_t nframes)
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{
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SessionEvent* ev;
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nframes_t this_nframes;
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framepos_t end_frame;
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bool session_needs_butler = false;
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framepos_t stop_limit;
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framecnt_t frames_moved;
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/* make sure the auditioner is silent */
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if (auditioner) {
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auditioner->silence (nframes);
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}
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/* handle any pending events */
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while (pending_events.read (&ev, 1) == 1) {
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merge_event (ev);
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}
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/* if we are not in the middle of a state change,
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and there are immediate events queued up,
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process them.
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*/
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while (!non_realtime_work_pending() && !immediate_events.empty()) {
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SessionEvent *ev = immediate_events.front ();
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immediate_events.pop_front ();
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process_event (ev);
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}
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/* Events caused a transport change, send an MTC Full Frame (Timecode) message.
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* This is sent whether rolling or not, to give slaves an idea of ardour time
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* on locates (and allow slow slaves to position and prepare for rolling)
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*/
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if (_send_timecode_update) {
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send_full_time_code (_transport_frame);
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}
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if (!process_can_proceed()) {
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_silent = true;
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return;
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}
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if (events.empty() || next_event == events.end()) {
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process_without_events (nframes);
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return;
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}
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if (_transport_speed == 1.0) {
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frames_moved = (framecnt_t) nframes;
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} else {
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interpolation.set_target_speed (fabs(_target_transport_speed));
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interpolation.set_speed (fabs(_transport_speed));
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frames_moved = (framecnt_t) interpolation.interpolate (0, nframes, 0, 0);
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}
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end_frame = _transport_frame + (nframes_t)frames_moved;
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{
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SessionEvent* this_event;
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Events::iterator the_next_one;
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if (!process_can_proceed()) {
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_silent = true;
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return;
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}
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if (!_exporting && _slave) {
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if (!follow_slave (nframes)) {
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return;
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}
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}
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if (_transport_speed == 0) {
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no_roll (nframes);
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return;
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}
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if (!_exporting && !timecode_transmission_suspended()) {
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send_midi_time_code_for_cycle (nframes);
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}
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if (actively_recording()) {
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stop_limit = max_framepos;
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} else {
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if (Config->get_stop_at_session_end()) {
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stop_limit = current_end_frame();
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} else {
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stop_limit = max_framepos;
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}
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}
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if (maybe_stop (stop_limit)) {
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no_roll (nframes);
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return;
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}
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this_event = *next_event;
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the_next_one = next_event;
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++the_next_one;
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/* yes folks, here it is, the actual loop where we really truly
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process some audio
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*/
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while (nframes) {
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this_nframes = nframes; /* real (jack) time relative */
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frames_moved = (framecnt_t) floor (_transport_speed * nframes); /* transport relative */
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/* running an event, position transport precisely to its time */
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if (this_event && this_event->action_frame <= end_frame && this_event->action_frame >= _transport_frame) {
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/* this isn't quite right for reverse play */
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frames_moved = (framecnt_t) (this_event->action_frame - _transport_frame);
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this_nframes = (nframes_t) abs( floor(frames_moved / _transport_speed) );
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}
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if (this_nframes) {
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click (_transport_frame, this_nframes);
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if (process_routes (this_nframes, session_needs_butler)) {
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fail_roll (nframes);
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return;
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}
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get_track_statistics ();
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nframes -= this_nframes;
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if (frames_moved < 0) {
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decrement_transport_position (-frames_moved);
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} else {
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increment_transport_position (frames_moved);
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}
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maybe_stop (stop_limit);
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check_declick_out ();
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}
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_engine.split_cycle (this_nframes);
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/* now handle this event and all others scheduled for the same time */
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while (this_event && this_event->action_frame == _transport_frame) {
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process_event (this_event);
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if (the_next_one == events.end()) {
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this_event = 0;
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} else {
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this_event = *the_next_one;
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++the_next_one;
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}
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}
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/* if an event left our state changing, do the right thing */
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if (nframes && non_realtime_work_pending()) {
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no_roll (nframes);
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break;
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}
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/* this is necessary to handle the case of seamless looping */
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end_frame = _transport_frame + (nframes_t) floor (nframes * _transport_speed);
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}
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set_next_event ();
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} /* implicit release of route lock */
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if (session_needs_butler) {
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_butler->summon ();
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}
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}
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void
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Session::reset_slave_state ()
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{
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average_slave_delta = 1800;
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delta_accumulator_cnt = 0;
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have_first_delta_accumulator = false;
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_slave_state = Stopped;
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}
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bool
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Session::transport_locked () const
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{
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Slave* sl = _slave;
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if (!locate_pending() && (!config.get_external_sync() || (sl && sl->ok() && sl->locked()))) {
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return true;
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}
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return false;
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}
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bool
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Session::follow_slave (nframes_t nframes)
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{
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double slave_speed;
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framepos_t slave_transport_frame;
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nframes_t this_delta;
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int dir;
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if (!_slave->ok()) {
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stop_transport ();
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config.set_external_sync (false);
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goto noroll;
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}
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_slave->speed_and_position (slave_speed, slave_transport_frame);
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DEBUG_TRACE (DEBUG::Slave, string_compose ("Slave position %1 speed %2\n", slave_transport_frame, slave_speed));
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if (!_slave->locked()) {
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DEBUG_TRACE (DEBUG::Slave, "slave not locked\n");
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goto noroll;
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}
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if (slave_transport_frame > _transport_frame) {
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this_delta = slave_transport_frame - _transport_frame;
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dir = 1;
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} else {
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this_delta = _transport_frame - slave_transport_frame;
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dir = -1;
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}
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if (_slave->starting()) {
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slave_speed = 0.0f;
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}
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if (_slave->is_always_synced() || config.get_timecode_source_is_synced()) {
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/* if the TC source is synced, then we assume that its
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speed is binary: 0.0 or 1.0
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*/
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if (slave_speed != 0.0f) {
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slave_speed = 1.0f;
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}
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} else {
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/* if we are chasing and the average delta between us and the
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master gets too big, we want to switch to silent
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motion. so keep track of that here.
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*/
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if (_slave_state == Running) {
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calculate_moving_average_of_slave_delta(dir, this_delta);
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}
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}
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track_slave_state (slave_speed, slave_transport_frame, this_delta);
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DEBUG_TRACE (DEBUG::Slave, string_compose ("slave state %1 @ %2 speed %3 cur delta %4 avg delta %5\n",
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_slave_state, slave_transport_frame, slave_speed, this_delta, average_slave_delta));
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if (_slave_state == Running && !_slave->is_always_synced() && !config.get_timecode_source_is_synced()) {
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if (_transport_speed != 0.0f) {
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/*
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note that average_dir is +1 or -1
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*/
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float delta;
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if (average_slave_delta == 0) {
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delta = this_delta;
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delta *= dir;
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} else {
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delta = average_slave_delta;
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delta *= average_dir;
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}
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#ifndef NDEBUG
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if (slave_speed != 0.0) {
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DEBUG_TRACE (DEBUG::Slave, string_compose ("delta = %1 speed = %2 ts = %3 M@%4 S@%5 avgdelta %6\n",
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(int) (dir * this_delta),
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slave_speed,
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_transport_speed,
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_transport_frame,
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slave_transport_frame,
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average_slave_delta));
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}
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#endif
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if (_slave->give_slave_full_control_over_transport_speed()) {
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set_transport_speed (slave_speed, false, false);
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//std::cout << "set speed = " << slave_speed << "\n";
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} else {
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float adjusted_speed = slave_speed + (1.5 * (delta / float(_current_frame_rate)));
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request_transport_speed (adjusted_speed);
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DEBUG_TRACE (DEBUG::Slave, string_compose ("adjust using %1 towards %2 ratio %3 current %4 slave @ %5\n",
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delta, adjusted_speed, adjusted_speed/slave_speed, _transport_speed,
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slave_speed));
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}
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#if 1
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if ((nframes_t) abs(average_slave_delta) > _slave->resolution()) {
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cerr << "average slave delta greater than slave resolution (" << _slave->resolution() << "), going to silent motion\n";
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goto silent_motion;
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}
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#endif
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}
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}
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|
|
|
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if (_slave_state == Running && !non_realtime_work_pending()) {
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/* speed is set, we're locked, and good to go */
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return true;
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|
}
|
|
|
|
silent_motion:
|
|
DEBUG_TRACE (DEBUG::Slave, "silent motion\n")
|
|
follow_slave_silently (nframes, slave_speed);
|
|
|
|
noroll:
|
|
/* don't move at all */
|
|
DEBUG_TRACE (DEBUG::Slave, "no roll\n")
|
|
no_roll (nframes);
|
|
return false;
|
|
}
|
|
|
|
void
|
|
Session::calculate_moving_average_of_slave_delta(int dir, nframes_t this_delta)
|
|
{
|
|
if (delta_accumulator_cnt >= delta_accumulator_size) {
|
|
have_first_delta_accumulator = true;
|
|
delta_accumulator_cnt = 0;
|
|
}
|
|
|
|
if (delta_accumulator_cnt != 0 || this_delta < _current_frame_rate) {
|
|
delta_accumulator[delta_accumulator_cnt++] = (nframes_t) dir * (nframes_t) this_delta;
|
|
}
|
|
|
|
if (have_first_delta_accumulator) {
|
|
average_slave_delta = 0L;
|
|
for (int i = 0; i < delta_accumulator_size; ++i) {
|
|
average_slave_delta += delta_accumulator[i];
|
|
}
|
|
average_slave_delta /= (int32_t) delta_accumulator_size;
|
|
if (average_slave_delta < 0L) {
|
|
average_dir = -1;
|
|
average_slave_delta = abs(average_slave_delta);
|
|
} else {
|
|
average_dir = 1;
|
|
}
|
|
}
|
|
}
|
|
|
|
void
|
|
Session::track_slave_state (float slave_speed, nframes_t slave_transport_frame, nframes_t this_delta)
|
|
{
|
|
if (slave_speed != 0.0f) {
|
|
|
|
/* slave is running */
|
|
|
|
switch (_slave_state) {
|
|
case Stopped:
|
|
if (_slave->requires_seekahead()) {
|
|
slave_wait_end = slave_transport_frame + _slave->seekahead_distance ();
|
|
DEBUG_TRACE (DEBUG::Slave, string_compose ("slave stopped, but running, requires seekahead to %1\n", slave_wait_end));
|
|
/* we can call locate() here because we are in process context */
|
|
locate (slave_wait_end, false, false);
|
|
_slave_state = Waiting;
|
|
|
|
} else {
|
|
|
|
_slave_state = Running;
|
|
|
|
Location* al = _locations->auto_loop_location();
|
|
|
|
if (al && play_loop && (slave_transport_frame < al->start() || slave_transport_frame > al->end())) {
|
|
// cancel looping
|
|
request_play_loop(false);
|
|
}
|
|
|
|
if (slave_transport_frame != _transport_frame) {
|
|
locate (slave_transport_frame, false, false);
|
|
}
|
|
}
|
|
break;
|
|
|
|
case Waiting:
|
|
default:
|
|
break;
|
|
}
|
|
|
|
if (_slave_state == Waiting) {
|
|
|
|
DEBUG_TRACE (DEBUG::Slave, string_compose ("slave waiting at %1\n", slave_transport_frame));
|
|
|
|
if (slave_transport_frame >= slave_wait_end) {
|
|
|
|
DEBUG_TRACE (DEBUG::Slave, string_compose ("slave start at %1 vs %2\n", slave_transport_frame, _transport_frame));
|
|
|
|
_slave_state = Running;
|
|
|
|
/* now perform a "micro-seek" within the disk buffers to realign ourselves
|
|
precisely with the master.
|
|
*/
|
|
|
|
|
|
bool ok = true;
|
|
nframes_t frame_delta = slave_transport_frame - _transport_frame;
|
|
|
|
boost::shared_ptr<RouteList> rl = routes.reader();
|
|
for (RouteList::iterator i = rl->begin(); i != rl->end(); ++i) {
|
|
boost::shared_ptr<Track> tr = boost::dynamic_pointer_cast<Track> (*i);
|
|
if (tr && !tr->can_internal_playback_seek (frame_delta)) {
|
|
ok = false;
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (ok) {
|
|
for (RouteList::iterator i = rl->begin(); i != rl->end(); ++i) {
|
|
boost::shared_ptr<Track> tr = boost::dynamic_pointer_cast<Track> (*i);
|
|
if (tr) {
|
|
tr->internal_playback_seek (frame_delta);
|
|
}
|
|
}
|
|
_transport_frame += frame_delta;
|
|
|
|
} else {
|
|
cerr << "cannot micro-seek\n";
|
|
/* XXX what? */
|
|
}
|
|
|
|
memset (delta_accumulator, 0, sizeof (int32_t) * delta_accumulator_size);
|
|
average_slave_delta = 0L;
|
|
this_delta = 0;
|
|
}
|
|
}
|
|
|
|
if (_slave_state == Running && _transport_speed == 0.0f) {
|
|
DEBUG_TRACE (DEBUG::Slave, "slave starts transport\n");
|
|
start_transport ();
|
|
}
|
|
|
|
} else { // slave_speed is 0
|
|
|
|
/* slave has stopped */
|
|
|
|
if (_transport_speed != 0.0f) {
|
|
DEBUG_TRACE (DEBUG::Slave, string_compose ("slave stops transport: %1 frame %2 tf %3\n", slave_speed, slave_transport_frame, _transport_frame));
|
|
stop_transport();
|
|
}
|
|
|
|
if (slave_transport_frame != _transport_frame) {
|
|
DEBUG_TRACE (DEBUG::Slave, string_compose ("slave stopped, move to %1\n", slave_transport_frame));
|
|
force_locate (slave_transport_frame, false);
|
|
}
|
|
|
|
_slave_state = Stopped;
|
|
}
|
|
}
|
|
|
|
void
|
|
Session::follow_slave_silently (nframes_t nframes, float slave_speed)
|
|
{
|
|
if (slave_speed && _transport_speed) {
|
|
|
|
/* something isn't right, but we should move with the master
|
|
for now.
|
|
*/
|
|
|
|
bool need_butler;
|
|
|
|
silent_process_routes (nframes, need_butler);
|
|
|
|
get_track_statistics ();
|
|
|
|
if (need_butler) {
|
|
_butler->summon ();
|
|
}
|
|
|
|
int32_t frames_moved = (int32_t) floor (_transport_speed * nframes);
|
|
|
|
if (frames_moved < 0) {
|
|
decrement_transport_position (-frames_moved);
|
|
} else {
|
|
increment_transport_position (frames_moved);
|
|
}
|
|
|
|
framepos_t stop_limit;
|
|
|
|
if (actively_recording()) {
|
|
stop_limit = max_framepos;
|
|
} else {
|
|
if (Config->get_stop_at_session_end()) {
|
|
stop_limit = current_end_frame();
|
|
} else {
|
|
stop_limit = max_framepos;
|
|
}
|
|
}
|
|
|
|
maybe_stop (stop_limit);
|
|
}
|
|
}
|
|
|
|
void
|
|
Session::process_without_events (nframes_t nframes)
|
|
{
|
|
bool session_needs_butler = false;
|
|
framepos_t stop_limit;
|
|
framecnt_t frames_moved;
|
|
|
|
if (!process_can_proceed()) {
|
|
_silent = true;
|
|
return;
|
|
}
|
|
|
|
if (!_exporting && _slave) {
|
|
if (!follow_slave (nframes)) {
|
|
return;
|
|
}
|
|
}
|
|
|
|
if (_transport_speed == 0) {
|
|
fail_roll (nframes);
|
|
return;
|
|
}
|
|
|
|
if (!_exporting && !timecode_transmission_suspended()) {
|
|
send_midi_time_code_for_cycle (nframes);
|
|
}
|
|
|
|
if (actively_recording()) {
|
|
stop_limit = max_framepos;
|
|
} else {
|
|
if (Config->get_stop_at_session_end()) {
|
|
stop_limit = current_end_frame();
|
|
} else {
|
|
stop_limit = max_framepos;
|
|
}
|
|
}
|
|
|
|
if (maybe_stop (stop_limit)) {
|
|
fail_roll (nframes);
|
|
return;
|
|
}
|
|
|
|
if (maybe_sync_start (nframes)) {
|
|
return;
|
|
}
|
|
|
|
click (_transport_frame, nframes);
|
|
|
|
if (_transport_speed == 1.0) {
|
|
frames_moved = (framecnt_t) nframes;
|
|
} else {
|
|
interpolation.set_target_speed (fabs(_target_transport_speed));
|
|
interpolation.set_speed (fabs(_transport_speed));
|
|
frames_moved = (framecnt_t) interpolation.interpolate (0, nframes, 0, 0);
|
|
}
|
|
|
|
if (process_routes (nframes, session_needs_butler)) {
|
|
fail_roll (nframes);
|
|
return;
|
|
}
|
|
|
|
get_track_statistics ();
|
|
|
|
if (frames_moved < 0) {
|
|
decrement_transport_position (-frames_moved);
|
|
} else {
|
|
increment_transport_position (frames_moved);
|
|
}
|
|
|
|
maybe_stop (stop_limit);
|
|
check_declick_out ();
|
|
|
|
if (session_needs_butler) {
|
|
_butler->summon ();
|
|
}
|
|
}
|
|
|
|
/** Process callback used when the auditioner is active.
|
|
* @param nframes number of frames to process.
|
|
*/
|
|
void
|
|
Session::process_audition (nframes_t nframes)
|
|
{
|
|
SessionEvent* ev;
|
|
boost::shared_ptr<RouteList> r = routes.reader ();
|
|
|
|
for (RouteList::iterator i = r->begin(); i != r->end(); ++i) {
|
|
if (!(*i)->is_hidden()) {
|
|
(*i)->silence (nframes);
|
|
}
|
|
}
|
|
|
|
/* run the auditioner, and if it says we need butler service, ask for it */
|
|
|
|
if (auditioner->play_audition (nframes) > 0) {
|
|
_butler->summon ();
|
|
}
|
|
|
|
/* if using a monitor section, run it because otherwise we don't hear anything */
|
|
|
|
if (auditioner->needs_monitor()) {
|
|
_monitor_out->passthru (_transport_frame, _transport_frame + nframes, nframes, false);
|
|
}
|
|
|
|
/* handle pending events */
|
|
|
|
while (pending_events.read (&ev, 1) == 1) {
|
|
merge_event (ev);
|
|
}
|
|
|
|
/* if we are not in the middle of a state change,
|
|
and there are immediate events queued up,
|
|
process them.
|
|
*/
|
|
|
|
while (!non_realtime_work_pending() && !immediate_events.empty()) {
|
|
SessionEvent *ev = immediate_events.front ();
|
|
immediate_events.pop_front ();
|
|
process_event (ev);
|
|
}
|
|
|
|
if (!auditioner->auditioning()) {
|
|
/* auditioner no longer active, so go back to the normal process callback */
|
|
process_function = &Session::process_with_events;
|
|
}
|
|
}
|
|
|
|
bool
|
|
Session::maybe_sync_start (nframes_t& nframes)
|
|
{
|
|
nframes_t sync_offset;
|
|
|
|
if (!waiting_for_sync_offset) {
|
|
return false;
|
|
}
|
|
|
|
if (_engine.get_sync_offset (sync_offset) && sync_offset < nframes) {
|
|
|
|
/* generate silence up to the sync point, then
|
|
adjust nframes + offset to reflect whatever
|
|
is left to do.
|
|
*/
|
|
|
|
no_roll (sync_offset);
|
|
nframes -= sync_offset;
|
|
AudioPort::increment_port_offset (sync_offset);
|
|
waiting_for_sync_offset = false;
|
|
|
|
if (nframes == 0) {
|
|
return true; // done, nothing left to process
|
|
}
|
|
|
|
} else {
|
|
|
|
/* sync offset point is not within this process()
|
|
cycle, so just generate silence. and don't bother
|
|
with any fancy stuff here, just the minimal silence.
|
|
*/
|
|
|
|
_silent = true;
|
|
|
|
if (Config->get_locate_while_waiting_for_sync()) {
|
|
if (micro_locate (nframes)) {
|
|
/* XXX ERROR !!! XXX */
|
|
}
|
|
}
|
|
|
|
return true; // done, nothing left to process
|
|
}
|
|
|
|
return false;
|
|
}
|
|
|
|
void
|
|
Session::queue_event (SessionEvent* ev)
|
|
{
|
|
if (_state_of_the_state & Deletion) {
|
|
return;
|
|
} else if (_state_of_the_state & Loading) {
|
|
merge_event (ev);
|
|
} else {
|
|
pending_events.write (&ev, 1);
|
|
}
|
|
}
|
|
|
|
void
|
|
Session::set_next_event ()
|
|
{
|
|
if (events.empty()) {
|
|
next_event = events.end();
|
|
return;
|
|
}
|
|
|
|
if (next_event == events.end()) {
|
|
next_event = events.begin();
|
|
}
|
|
|
|
if ((*next_event)->action_frame > _transport_frame) {
|
|
next_event = events.begin();
|
|
}
|
|
|
|
for (; next_event != events.end(); ++next_event) {
|
|
if ((*next_event)->action_frame >= _transport_frame) {
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
void
|
|
Session::process_event (SessionEvent* ev)
|
|
{
|
|
bool remove = true;
|
|
bool del = true;
|
|
|
|
/* if we're in the middle of a state change (i.e. waiting
|
|
for the butler thread to complete the non-realtime
|
|
part of the change), we'll just have to queue this
|
|
event for a time when the change is complete.
|
|
*/
|
|
|
|
if (non_realtime_work_pending()) {
|
|
|
|
/* except locates, which we have the capability to handle */
|
|
|
|
if (ev->type != SessionEvent::Locate) {
|
|
immediate_events.insert (immediate_events.end(), ev);
|
|
_remove_event (ev);
|
|
return;
|
|
}
|
|
}
|
|
|
|
DEBUG_TRACE (DEBUG::SessionEvents, string_compose ("Processing event: %1 @ %2\n", enum_2_string (ev->type), _transport_frame));
|
|
|
|
switch (ev->type) {
|
|
case SessionEvent::SetLoop:
|
|
set_play_loop (ev->yes_or_no);
|
|
break;
|
|
|
|
case SessionEvent::AutoLoop:
|
|
if (play_loop) {
|
|
start_locate (ev->target_frame, true, false, Config->get_seamless_loop());
|
|
}
|
|
remove = false;
|
|
del = false;
|
|
break;
|
|
|
|
case SessionEvent::Locate:
|
|
if (ev->yes_or_no) {
|
|
// cerr << "forced locate to " << ev->target_frame << endl;
|
|
locate (ev->target_frame, false, true, false);
|
|
} else {
|
|
// cerr << "soft locate to " << ev->target_frame << endl;
|
|
start_locate (ev->target_frame, false, true, false);
|
|
}
|
|
_send_timecode_update = true;
|
|
break;
|
|
|
|
case SessionEvent::LocateRoll:
|
|
if (ev->yes_or_no) {
|
|
// cerr << "forced locate to+roll " << ev->target_frame << endl;
|
|
locate (ev->target_frame, true, true, false);
|
|
} else {
|
|
// cerr << "soft locate to+roll " << ev->target_frame << endl;
|
|
start_locate (ev->target_frame, true, true, false);
|
|
}
|
|
_send_timecode_update = true;
|
|
break;
|
|
|
|
case SessionEvent::LocateRollLocate:
|
|
// locate is handled by ::request_roll_at_and_return()
|
|
_requested_return_frame = ev->target_frame;
|
|
request_locate (ev->target2_frame, true);
|
|
break;
|
|
|
|
|
|
case SessionEvent::SetTransportSpeed:
|
|
set_transport_speed (ev->speed, ev->yes_or_no, ev->second_yes_or_no);
|
|
break;
|
|
|
|
case SessionEvent::PunchIn:
|
|
// cerr << "PunchIN at " << transport_frame() << endl;
|
|
if (config.get_punch_in() && record_status() == Enabled) {
|
|
enable_record ();
|
|
}
|
|
remove = false;
|
|
del = false;
|
|
break;
|
|
|
|
case SessionEvent::PunchOut:
|
|
// cerr << "PunchOUT at " << transport_frame() << endl;
|
|
if (config.get_punch_out()) {
|
|
step_back_from_record ();
|
|
}
|
|
remove = false;
|
|
del = false;
|
|
break;
|
|
|
|
case SessionEvent::StopOnce:
|
|
if (!non_realtime_work_pending()) {
|
|
stop_transport (ev->yes_or_no);
|
|
_clear_event_type (SessionEvent::StopOnce);
|
|
}
|
|
remove = false;
|
|
del = false;
|
|
break;
|
|
|
|
case SessionEvent::RangeStop:
|
|
if (!non_realtime_work_pending()) {
|
|
stop_transport (ev->yes_or_no);
|
|
}
|
|
remove = false;
|
|
del = false;
|
|
break;
|
|
|
|
case SessionEvent::RangeLocate:
|
|
start_locate (ev->target_frame, true, true, false);
|
|
remove = false;
|
|
del = false;
|
|
break;
|
|
|
|
case SessionEvent::Overwrite:
|
|
overwrite_some_buffers (static_cast<Track*>(ev->ptr));
|
|
break;
|
|
|
|
case SessionEvent::SetTrackSpeed:
|
|
set_track_speed (static_cast<Track*> (ev->ptr), ev->speed);
|
|
break;
|
|
|
|
case SessionEvent::SetSyncSource:
|
|
use_sync_source (ev->slave);
|
|
break;
|
|
|
|
case SessionEvent::Audition:
|
|
set_audition (ev->region);
|
|
// drop reference to region
|
|
ev->region.reset ();
|
|
break;
|
|
|
|
case SessionEvent::InputConfigurationChange:
|
|
add_post_transport_work (PostTransportInputChange);
|
|
_butler->schedule_transport_work ();
|
|
break;
|
|
|
|
case SessionEvent::SetPlayAudioRange:
|
|
set_play_range (ev->audio_range, (ev->speed == 1.0f));
|
|
break;
|
|
|
|
case SessionEvent::RealTimeOperation:
|
|
process_rtop (ev);
|
|
del = false; // other side of RT request needs to clean up
|
|
break;
|
|
|
|
case SessionEvent::AdjustPlaybackBuffering:
|
|
schedule_playback_buffering_adjustment ();
|
|
break;
|
|
|
|
case SessionEvent::AdjustCaptureBuffering:
|
|
schedule_capture_buffering_adjustment ();
|
|
break;
|
|
|
|
case SessionEvent::SetTimecodeTransmission:
|
|
g_atomic_int_set (&_suspend_timecode_transmission, ev->yes_or_no ? 0 : 1);
|
|
break;
|
|
|
|
default:
|
|
fatal << string_compose(_("Programming error: illegal event type in process_event (%1)"), ev->type) << endmsg;
|
|
/*NOTREACHED*/
|
|
break;
|
|
};
|
|
|
|
if (remove) {
|
|
del = del && !_remove_event (ev);
|
|
}
|
|
|
|
if (del) {
|
|
delete ev;
|
|
}
|
|
}
|
|
|