audio_streamview.cc

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/*
    Copyright (C) 2001, 2006 Paul Davis

    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., 675 Mass Ave, Cambridge, MA 02139, 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/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 "tape_region_view.h"
#include "audio_time_axis.h"
#include "region_selection.h"
#include "selection.h"
#include "public_editor.h"
#include "ardour_ui.h"
#include "rgb_macros.h"
#include "gui_thread.h"

#include "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;
        case Destructive:
                region_view = new TapeAudioRegionView (_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::setup_rec_box ()
{
        //cerr << _trackview.name() << " streamview SRB region_views.size() = " << region_views.size() << endl;

        if (_trackview.session()->transport_rolling()) {

                // cerr << "\trolling\n";

                if (!rec_active &&
                    _trackview.session()->record_status() == Session::Recording &&
                    _trackview.track()->record_enabled()) {
                        if (_trackview.audio_track()->mode() == Normal && ARDOUR_UI::config()->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

                                framepos_t start = 0;
                                if (rec_regions.size() > 0) {
                                        start = rec_regions.back().first->start()
                                                        + _trackview.track()->get_captured_frames(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_frame());
                                rec_regions.push_back (make_pair(region, (RegionView*) 0));
                        }

                        /* start a new rec box */

                        boost::shared_ptr<AudioTrack> at = _trackview.audio_track();
                        framepos_t const frame_pos = at->current_capture_start ();
                        double     const width     = ((at->mode() == Destructive) ? 2 : 0);

                        create_rec_box(frame_pos, width);

                } else if (rec_active &&
                           (_trackview.session()->record_status() != Session::Recording ||
                            !_trackview.track()->record_enabled())) {
                        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 (framepos_t start, framecnt_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_frame) {
                last_rec_data_frame = 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 (framepos_t start, framecnt_t cnt)
{
        if (!ARDOUR_UI::config()->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;
                }

                framecnt_t origlen = region->length();

                if (region == rec_regions.back().first && rec_active) {

                        if (last_rec_data_frame > region->start()) {

                                framecnt_t nlen = last_rec_data_frame - region->start();

                                if (nlen != region->length()) {

                                        region->suspend_property_changes ();
                                        region->set_position (_trackview.track()->get_capture_start_frame(n));
                                        region->set_length (nlen);
                                        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 {

                                framecnt_t nlen = _trackview.track()->get_captured_frames(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_frame(n));
                                                region->set_length (nlen);
                                                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);
                }
        }
}

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_frame())) {
                        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 (ARDOUR_UI::config()->color_mod ("audio track base", "audio track base"));
        }

        //case cAudioBusBase:
        if (!_trackview.is_track()) {
                if (Profile->get_sae() && _trackview.route()->is_master()) {
                        canvas_rect->set_fill_color (ARDOUR_UI::config()->color ("audio master bus base"));
                } else {
                        canvas_rect->set_fill_color (ARDOUR_UI::config()->color_mod ("audio bus base", "audio bus base"));
                }
        }
}