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livetrax/gtk2_ardour/audio_streamview.cc
Johannes Mueller bff9c9a5a1 Work around a race condition
This covers a race condition in session transport that when synced to an
external engine it sometimes occurs that at the end of ::realtime_stop()
::transport_stopped_or_stopping() returns false when ::setup_rec_box() is
called. In this case the rec boxes are not erased when the recoding transport
is stopped.

This fixes this behavior about the remaining rec boxes, however the race
condition remains.

The race condition is reported in #8104. It should be considered reverting this
commit once the race condition is fixed.
2020-05-10 14:53:38 +02:00

499 lines
14 KiB
C++

/*
* Copyright (C) 2006-2014 David Robillard <d@drobilla.net>
* Copyright (C) 2007-2012 Carl Hetherington <carl@carlh.net>
* Copyright (C) 2007-2017 Paul Davis <paul@linuxaudiosystems.com>
* Copyright (C) 2007 Doug McLain <doug@nostar.net>
* Copyright (C) 2014-2017 Robin Gareus <robin@gareus.org>
* Copyright (C) 2015-2016 Nick Mainsbridge <mainsbridge@gmail.com>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#include <cmath>
#include <cassert>
#include <utility>
#include <gtkmm.h>
#include <gtkmm2ext/gtk_ui.h>
#include "pbd/stacktrace.h"
#include "ardour/audioregion.h"
#include "ardour/audiofilesource.h"
#include "ardour/audio_track.h"
#include "ardour/record_enable_control.h"
#include "ardour/region_factory.h"
#include "ardour/profile.h"
#include "ardour/rc_configuration.h"
#include "ardour/session.h"
#include "canvas/rectangle.h"
#include "audio_streamview.h"
#include "audio_region_view.h"
#include "audio_time_axis.h"
#include "region_selection.h"
#include "region_gain_line.h"
#include "selection.h"
#include "public_editor.h"
#include "rgb_macros.h"
#include "gui_thread.h"
#include "ui_config.h"
#include "pbd/i18n.h"
using namespace std;
using namespace ARDOUR;
using namespace PBD;
using namespace Editing;
AudioStreamView::AudioStreamView (AudioTimeAxisView& tv)
: StreamView (tv)
{
color_handler ();
_amplitude_above_axis = 1.0;
}
int
AudioStreamView::set_amplitude_above_axis (gdouble app)
{
RegionViewList::iterator i;
if (app < 1.0) {
return -1;
}
_amplitude_above_axis = app;
for (i = region_views.begin(); i != region_views.end(); ++i) {
AudioRegionView* const arv = dynamic_cast<AudioRegionView*>(*i);
if (arv)
arv->set_amplitude_above_axis (app);
}
return 0;
}
RegionView*
AudioStreamView::create_region_view (boost::shared_ptr<Region> r, bool wait_for_waves, bool recording)
{
AudioRegionView *region_view = 0;
boost::shared_ptr<AudioRegion> region = boost::dynamic_pointer_cast<AudioRegion> (r);
if (region == 0) {
return 0;
}
switch (_trackview.audio_track()->mode()) {
case NonLayered:
case Normal:
if (recording) {
region_view = new AudioRegionView (_canvas_group, _trackview, region,
_samples_per_pixel, region_color, recording, TimeAxisViewItem::Visibility(
TimeAxisViewItem::ShowFrame |
TimeAxisViewItem::HideFrameRight |
TimeAxisViewItem::HideFrameLeft |
TimeAxisViewItem::HideFrameTB));
} else {
region_view = new AudioRegionView (_canvas_group, _trackview, region,
_samples_per_pixel, region_color);
}
break;
default:
fatal << string_compose (_("programming error: %1"), "illegal track mode in ::create_region_view()") << endmsg;
abort(); /*NOTREACHED*/
}
region_view->init (wait_for_waves);
region_view->set_amplitude_above_axis(_amplitude_above_axis);
region_view->set_height (child_height ());
/* if its the special single-sample length that we use for rec-regions, make it
insensitive to events
*/
if (region->length() == 1) {
region_view->set_sensitive (false);
}
return region_view;
}
RegionView*
AudioStreamView::add_region_view_internal (boost::shared_ptr<Region> r, bool wait_for_waves, bool recording)
{
RegionView *region_view = create_region_view (r, wait_for_waves, recording);
if (region_view == 0) {
return 0;
}
region_views.push_front (region_view);
/* catch region going away */
r->DropReferences.connect (*this, invalidator (*this), boost::bind (&AudioStreamView::remove_region_view, this, boost::weak_ptr<Region> (r)), gui_context());
RegionViewAdded (region_view);
return region_view;
}
void
AudioStreamView::redisplay_track ()
{
list<RegionView *>::iterator i;
// Flag region views as invalid and disable drawing
for (i = region_views.begin(); i != region_views.end(); ++i) {
(*i)->set_valid (false);
(*i)->enable_display (false);
}
// Add and display views, and flag them as valid
if (_trackview.is_audio_track()) {
_trackview.track()->playlist()->foreach_region(
sigc::hide_return (sigc::mem_fun (*this, &StreamView::add_region_view))
);
}
// Stack regions by layer, and remove invalid regions
layer_regions();
}
void
AudioStreamView::reload_waves ()
{
list<RegionView *>::iterator i;
for (i = region_views.begin(); i != region_views.end(); ++i) {
AudioRegionView* arv = dynamic_cast<AudioRegionView*> (*i);
if (!arv) {
continue;
}
arv->delete_waves();
arv->create_waves();
}
}
void
AudioStreamView::setup_rec_box ()
{
//cerr << _trackview.name() << " streamview SRB region_views.size() = " << region_views.size() << endl;
if (!_trackview.session()->transport_stopped_or_stopping() &&
(_trackview.session()->transport_rolling() || _trackview.session()->get_record_enabled())) {
// cerr << "\trolling\n";
if (!rec_active &&
_trackview.session()->record_status() == Session::Recording &&
_trackview.track()->rec_enable_control()->get_value()) {
if (_trackview.audio_track()->mode() == Normal && UIConfiguration::instance().get_show_waveforms_while_recording() && rec_regions.size() == rec_rects.size()) {
/* add a new region, but don't bother if they set show-waveforms-while-recording mid-record */
SourceList sources;
rec_data_ready_connections.drop_connections ();
boost::shared_ptr<AudioTrack> tr = _trackview.audio_track();
for (uint32_t n = 0; n < tr->n_channels().n_audio(); ++n) {
boost::shared_ptr<AudioFileSource> src = tr->write_source (n);
if (src) {
sources.push_back (src);
src->PeakRangeReady.connect (rec_data_ready_connections,
invalidator (*this),
boost::bind (&AudioStreamView::rec_peak_range_ready, this, _1, _2, boost::weak_ptr<Source>(src)),
gui_context());
}
}
// handle multi
samplepos_t start = 0;
if (rec_regions.size() > 0) {
start = rec_regions.back().first->start()
+ _trackview.track()->get_captured_samples(rec_regions.size()-1);
}
PropertyList plist;
plist.add (Properties::start, start);
plist.add (Properties::length, 1);
plist.add (Properties::name, string());
plist.add (Properties::layer, 0);
boost::shared_ptr<AudioRegion> region (
boost::dynamic_pointer_cast<AudioRegion>(RegionFactory::create (sources, plist, false)));
assert(region);
region->set_position (_trackview.session()->transport_sample());
rec_regions.push_back (make_pair(region, (RegionView*) 0));
}
/* start a new rec box */
boost::shared_ptr<AudioTrack> at = _trackview.audio_track();
samplepos_t const sample_pos = at->current_capture_start ();
create_rec_box(sample_pos, 0);
} else if (rec_active &&
(_trackview.session()->record_status() != Session::Recording ||
!_trackview.track()->rec_enable_control()->get_value())) {
screen_update_connection.disconnect();
rec_active = false;
rec_updating = false;
}
} else {
// cerr << "\tNOT rolling, rec_rects = " << rec_rects.size() << " rec_regions = " << rec_regions.size() << endl;
if (!rec_rects.empty() || !rec_regions.empty()) {
/* disconnect rapid update */
screen_update_connection.disconnect();
rec_data_ready_connections.drop_connections ();
rec_updating = false;
rec_active = false;
/* remove temp regions */
for (list<pair<boost::shared_ptr<Region>,RegionView*> >::iterator iter = rec_regions.begin(); iter != rec_regions.end(); ) {
list<pair<boost::shared_ptr<Region>,RegionView*> >::iterator tmp;
tmp = iter;
++tmp;
(*iter).first->drop_references ();
iter = tmp;
}
rec_regions.clear();
// cerr << "\tclear " << rec_rects.size() << " rec rects\n";
/* transport stopped, clear boxes */
for (vector<RecBoxInfo>::iterator iter=rec_rects.begin(); iter != rec_rects.end(); ++iter) {
RecBoxInfo &rect = (*iter);
delete rect.rectangle;
}
rec_rects.clear();
}
}
}
void
AudioStreamView::rec_peak_range_ready (samplepos_t start, samplecnt_t cnt, boost::weak_ptr<Source> weak_src)
{
ENSURE_GUI_THREAD (*this, &AudioStreamView::rec_peak_range_ready, start, cnt, weak_src)
boost::shared_ptr<Source> src (weak_src.lock());
if (!src) {
return;
}
// this is called from the peak building thread
if (rec_data_ready_map.size() == 0 || start + cnt > last_rec_data_sample) {
last_rec_data_sample = start + cnt;
}
rec_data_ready_map[src] = true;
if (rec_data_ready_map.size() == _trackview.track()->n_channels().n_audio()) {
update_rec_regions (start, cnt);
rec_data_ready_map.clear();
}
}
void
AudioStreamView::update_rec_regions (samplepos_t start, samplecnt_t cnt)
{
if (!UIConfiguration::instance().get_show_waveforms_while_recording ()) {
return;
}
uint32_t n = 0;
for (list<pair<boost::shared_ptr<Region>,RegionView*> >::iterator iter = rec_regions.begin(); iter != rec_regions.end(); n++) {
list<pair<boost::shared_ptr<Region>,RegionView*> >::iterator tmp = iter;
++tmp;
assert (n < rec_rects.size());
if (!rec_rects[n].rectangle->visible()) {
/* rect already hidden, this region is done */
iter = tmp;
continue;
}
boost::shared_ptr<AudioRegion> region = boost::dynamic_pointer_cast<AudioRegion>(iter->first);
if (!region) {
iter = tmp;
continue;
}
samplecnt_t origlen = region->length();
if (region == rec_regions.back().first && rec_active) {
if (last_rec_data_sample > region->start()) {
samplecnt_t nlen = last_rec_data_sample - region->start();
if (nlen != region->length()) {
region->suspend_property_changes ();
/* set non-musical position / length */
region->set_position (_trackview.track()->get_capture_start_sample(n));
region->set_length (nlen, 0);
region->resume_property_changes ();
if (origlen == 1) {
/* our special initial length */
add_region_view_internal (region, false, true);
setup_new_rec_layer_time (region);
}
check_record_layers (region, (region->position() - region->start() + start + cnt));
/* also update rect */
ArdourCanvas::Rectangle * rect = rec_rects[n].rectangle;
gdouble xend = _trackview.editor().sample_to_pixel (region->position() + region->length());
rect->set_x1 (xend);
}
} else {
samplecnt_t nlen = _trackview.track()->get_captured_samples(n);
if (nlen != region->length()) {
if (region->source_length(0) >= region->start() + nlen) {
region->suspend_property_changes ();
region->set_position (_trackview.track()->get_capture_start_sample(n));
region->set_length (nlen, 0);
region->resume_property_changes ();
if (origlen == 1) {
/* our special initial length */
add_region_view_internal (region, false, true);
}
/* also hide rect */
ArdourCanvas::Item * rect = rec_rects[n].rectangle;
rect->hide();
}
}
}
}
iter = tmp;
}
}
void
AudioStreamView::show_all_fades ()
{
for (list<RegionView*>::iterator i = region_views.begin(); i != region_views.end(); ++i) {
AudioRegionView* const arv = dynamic_cast<AudioRegionView*>(*i);
if (arv) {
arv->set_fade_visibility (true);
}
}
}
void
AudioStreamView::hide_all_fades ()
{
for (list<RegionView*>::iterator i = region_views.begin(); i != region_views.end(); ++i) {
AudioRegionView* const arv = dynamic_cast<AudioRegionView*>(*i);
if (arv) {
arv->set_fade_visibility (false);
}
}
}
/** Hide xfades for regions that overlap ar.
* @return Pair of lists; first is the AudioRegionViews that start xfades were hidden for,
* second is the AudioRegionViews that end xfades were hidden for.
*/
pair<list<AudioRegionView*>, list<AudioRegionView*> >
AudioStreamView::hide_xfades_with (boost::shared_ptr<AudioRegion> ar)
{
list<AudioRegionView*> start_hidden;
list<AudioRegionView*> end_hidden;
for (list<RegionView*>::iterator i = region_views.begin(); i != region_views.end(); ++i) {
AudioRegionView* const arv = dynamic_cast<AudioRegionView*>(*i);
if (arv) {
switch (arv->region()->coverage (ar->position(), ar->last_sample())) {
case Evoral::OverlapNone:
break;
default:
if (arv->start_xfade_visible ()) {
start_hidden.push_back (arv);
}
if (arv->end_xfade_visible ()) {
end_hidden.push_back (arv);
}
arv->hide_xfades ();
break;
}
}
}
return make_pair (start_hidden, end_hidden);
}
void
AudioStreamView::color_handler ()
{
//case cAudioTrackBase:
if (_trackview.is_track()) {
canvas_rect->set_fill_color (UIConfiguration::instance().color_mod ("audio track base", "audio track base"));
}
//case cAudioBusBase:
if (!_trackview.is_track()) {
canvas_rect->set_fill_color (UIConfiguration::instance().color_mod ("audio bus base", "audio bus base"));
}
}
void
AudioStreamView::set_selected_points (PointSelection& points)
{
for (list<RegionView *>::iterator i = region_views.begin(); i != region_views.end(); ++i) {
AudioRegionView* const arv = dynamic_cast<AudioRegionView*>(*i);
if (arv && arv->get_gain_line ()) {
arv->get_gain_line ()->set_selected_points (points);
}
}
}