livetrax/gtk2_ardour/export_channel_selector.cc

/*
    Copyright (C) 2008 Paul Davis
    Author: Sakari Bergen

    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 "export_channel_selector.h"

#include <algorithm>

#include <pbd/convert.h>

#include <ardour/audioengine.h>
#include <ardour/export_channel_configuration.h>
#include <ardour/export_handler.h>
#include <ardour/io.h>
#include <ardour/route.h>
#include <ardour/audio_port.h>
#include <ardour/session.h>

#include <sstream>

#include "i18n.h"

using namespace ARDOUR;
using namespace PBD;

ExportChannelSelector::ExportChannelSelector () :
  channels_label (_("Channels:"), Gtk::ALIGN_LEFT),
  split_checkbox (_("Split to mono files")),
  max_channels (20),
  channel_view (max_channels)
{

	channels_hbox.pack_start (channels_label, false, false, 0);
	channels_hbox.pack_end (channels_spinbutton, false, false, 0);
	
	channels_vbox.pack_start (channels_hbox, false, false, 0);
	channels_vbox.pack_start (split_checkbox, false, false, 6);
	
	channel_alignment.add (channel_scroller);
	channel_alignment.set_padding (0, 0, 12, 0);
	channel_scroller.add (channel_view);
	channel_scroller.set_size_request (-1, 130);
	channel_scroller.set_policy (Gtk::POLICY_AUTOMATIC, Gtk::POLICY_AUTOMATIC);
	
	pack_start (channels_vbox, false, false, 0);
	pack_start (channel_alignment, true, true, 0);
	
	/* Channels spinbutton */
	
	channels_spinbutton.set_digits (0);
	channels_spinbutton.set_increments (1, 2);
	channels_spinbutton.set_range (1, max_channels);
	channels_spinbutton.set_value (2);
	
	channels_spinbutton.signal_value_changed().connect (sigc::mem_fun (*this, &ExportChannelSelector::update_channel_count));
	
	/* Other signals */
	
	split_checkbox.signal_toggled().connect (sigc::mem_fun (*this, &ExportChannelSelector::update_split_state));
	channel_view.CriticalSelectionChanged.connect (CriticalSelectionChanged.make_slot());
	
	/* Finalize */
	
	show_all_children ();
	
}

ExportChannelSelector::~ExportChannelSelector ()
{
// 	if (session) {
// 		session->add_instant_xml (get_state(), false);
// 	}
}

void
ExportChannelSelector::set_state (ARDOUR::ExportProfileManager::ChannelConfigStatePtr const state_, ARDOUR::Session * session_)
{
	state = state_;
	session = session_;
	
	split_checkbox.set_active (state->config->get_split());
	channels_spinbutton.set_value (state->config->get_n_chans());
	
	fill_route_list ();
	channel_view.set_config (state->config);
}

void
ExportChannelSelector::fill_route_list ()
{
	channel_view.clear_routes ();
	Session::RouteList routes = *session->get_routes();

	/* Add master bus and then everything else */
	
	ARDOUR::IO * master = session->master_out().get();
	channel_view.add_route (master);
	
	for (Session::RouteList::iterator it = routes.begin(); it != routes.end(); ++it) {
		if (it->get() == master) {
			continue;
		}
		channel_view.add_route (it->get());
	}
	
	update_channel_count ();
}

void
ExportChannelSelector::update_channel_count ()
{
	uint32_t chans = static_cast<uint32_t> (channels_spinbutton.get_value());
	channel_view.set_channel_count (chans);
	CriticalSelectionChanged();
}

void
ExportChannelSelector::update_split_state ()
{
	state->config->set_split (split_checkbox.get_active());
	CriticalSelectionChanged();
}

void
ExportChannelSelector::RouteCols::add_channels (uint32_t chans)
{
	while (chans > 0) {
		channels.push_back (Channel (*this));
		++n_channels;
		--chans;
	}
}

ExportChannelSelector::RouteCols::Channel &
ExportChannelSelector::RouteCols::get_channel (uint32_t channel)
{
	if (channel > n_channels) {
		std::cout << "Invalid channel cout for get_channel!" << std::endl;
	}

	std::list<Channel>::iterator it = channels.begin();
	
	while (channel > 1) { // Channel count starts from one!
		++it;
		--channel;
	}
	
	return *it;
}

ExportChannelSelector::ChannelTreeView::ChannelTreeView (uint32_t max_channels) :
  n_channels (0)
{
	/* Main columns */
	
	route_cols.add_channels (max_channels);
	
	route_list = Gtk::ListStore::create(route_cols);
	set_model (route_list);
	
	/* Add column with toggle and text */
	
	append_column_editable (_("Bus or Track"), route_cols.selected);
	
	Gtk::CellRendererText* text_renderer = Gtk::manage (new Gtk::CellRendererText);
	text_renderer->property_editable() = false;
	
	Gtk::TreeView::Column* column = get_column (0);
	column->pack_start (*text_renderer);
	column->add_attribute (text_renderer->property_text(), route_cols.name);
	
	Gtk::CellRendererToggle *toggle = dynamic_cast<Gtk::CellRendererToggle *>(get_column_cell_renderer (0));
	toggle->signal_toggled().connect (mem_fun (*this, &ExportChannelSelector::ChannelTreeView::update_toggle_selection));
	
	static_columns = get_columns().size();
}

void
ExportChannelSelector::ChannelTreeView::set_config (ChannelConfigPtr c)
{
	/* TODO Without the following line, the state might get reset.
	 * Pointing to the same address does not mean the state of the configuration hasn't changed.
	 * In the current code this is safe, but the actual cause of the problem would be good to fix
	 */

	if (config == c) { return; }
	config = c;

	uint32_t i = 1;
	ExportChannelConfiguration::ChannelList chan_list = config->get_channels();
	for (ExportChannelConfiguration::ChannelList::iterator c_it = chan_list.begin(); c_it != chan_list.end(); ++c_it) {
	
		for (Gtk::ListStore::Children::iterator r_it = route_list->children().begin(); r_it != route_list->children().end(); ++r_it) {
			
			Glib::RefPtr<Gtk::ListStore> port_list = r_it->get_value (route_cols.port_list_col);
			std::set<AudioPort *> route_ports;
			std::set<AudioPort *> intersection;
			std::map<AudioPort *, ustring> port_labels;
			
			for (Gtk::ListStore::Children::const_iterator p_it = port_list->children().begin(); p_it != port_list->children().end(); ++p_it) {
				route_ports.insert ((*p_it)->get_value (route_cols.port_cols.port));
				port_labels.insert (std::pair<AudioPort*, ustring> ((*p_it)->get_value (route_cols.port_cols.port),
				                                                    (*p_it)->get_value (route_cols.port_cols.label)));
			}
			
			std::set_intersection ((*c_it)->begin(), (*c_it)->end(),
			                       route_ports.begin(), route_ports.end(),
			                       std::insert_iterator<std::set<AudioPort *> > (intersection, intersection.begin()));
			
			intersection.erase (0); // Remove "none" selection
			
			if (intersection.empty()) {
				continue;
			}
			
			if (!r_it->get_value (route_cols.selected)) {
				r_it->set_value (route_cols.selected, true);
				
				/* Set previous channels (if any) to none */
				
				for (uint32_t chn = 1; chn < i; ++chn) {
					r_it->set_value (route_cols.get_channel (chn).port, (AudioPort *) 0);
					r_it->set_value (route_cols.get_channel (chn).label, ustring ("(none)"));
				}
			}
			
			AudioPort * port = *intersection.begin();
			std::map<AudioPort *, ustring>::iterator label_it = port_labels.find (port);
			ustring label = label_it != port_labels.end() ? label_it->second : "error";
			
			r_it->set_value (route_cols.get_channel (i).port, port);
			r_it->set_value (route_cols.get_channel (i).label, label);
		}
		
		++i;
	}
}

void
ExportChannelSelector::ChannelTreeView::add_route (ARDOUR::IO * route)
{
	Gtk::TreeModel::iterator iter = route_list->append();
	Gtk::TreeModel::Row row = *iter;

	row[route_cols.selected] = false;
	row[route_cols.name] = route->name();
	row[route_cols.io] = route;
	
	/* Initialize port list */
	
	Glib::RefPtr<Gtk::ListStore> port_list = Gtk::ListStore::create (route_cols.port_cols);
	row[route_cols.port_list_col] = port_list;
	
	uint32_t outs = route->n_outputs().n_audio();
	for (uint32_t i = 0; i < outs; ++i) {
		iter = port_list->append();
		row = *iter;
		
		row[route_cols.port_cols.selected] = false;
		row[route_cols.port_cols.port] = route->audio_output (i);
		
		std::ostringstream oss;
		oss << "Out-" << (i + 1);
		
		row[route_cols.port_cols.label] = oss.str();
	}
	
	iter = port_list->append();
	row = *iter;
	
	row[route_cols.port_cols.selected] = false;
	row[route_cols.port_cols.port] = 0;
	row[route_cols.port_cols.label] = "(none)";
	
}

void
ExportChannelSelector::ChannelTreeView::set_channel_count (uint32_t channels)
{
	int offset = channels - n_channels;
	
	while (offset > 0) {
		++n_channels;
	
		std::ostringstream oss;
		oss << n_channels;
		
		/* New column */
		
		Gtk::TreeView::Column* column = Gtk::manage (new Gtk::TreeView::Column (oss.str())); 
		
		Gtk::CellRendererCombo* combo_renderer = Gtk::manage (new Gtk::CellRendererCombo);
		combo_renderer->property_text_column() = 2; 
		column->pack_start (*combo_renderer);
		
		append_column (*column);
		
		column->add_attribute (combo_renderer->property_text(), route_cols.get_channel(n_channels).label);
		column->add_attribute (combo_renderer->property_model(), route_cols.port_list_col);
		column->add_attribute (combo_renderer->property_editable(), route_cols.selected);
		
		combo_renderer->signal_edited().connect (sigc::bind (sigc::mem_fun (*this, &ExportChannelSelector::ChannelTreeView::update_selection_text), n_channels));
		
		/* put data into view */
		
		for (Gtk::ListStore::Children::iterator it = route_list->children().begin(); it != route_list->children().end(); ++it) {
			Glib::ustring label = it->get_value(route_cols.selected) ? "(none)" : "";
			it->set_value (route_cols.get_channel (n_channels).label, label);
			it->set_value (route_cols.get_channel (n_channels).port, (AudioPort *) 0);
		}
		
		/* set column width */
		
		get_column (static_columns + n_channels - 1)->set_min_width (80);
		
		--offset;
	}
	
	while (offset < 0) {
		--n_channels;
		
		remove_column (*get_column (n_channels + static_columns));
		
		++offset;
	}
	
	update_config ();
}

void
ExportChannelSelector::ChannelTreeView::update_config ()
{

	if (!config) { return; }

	config->clear_channels();

	for (uint32_t i = 1; i <= n_channels; ++i) {
	
		boost::shared_ptr<ExportChannel> channel (new ExportChannel ());
	
		for (Gtk::ListStore::Children::iterator it = route_list->children().begin(); it != route_list->children().end(); ++it) {
			Gtk::TreeModel::Row row = *it;
			
			if (!row[route_cols.selected]) {
				continue;
			}
			
			AudioPort * port = row[route_cols.get_channel (i).port];
			if (port) {
				channel->add_port (port);
			}
		}
		
		config->register_channel (channel);
	}
	
	CriticalSelectionChanged ();
}

void
ExportChannelSelector::ChannelTreeView::update_toggle_selection (Glib::ustring const & path)
{
	Gtk::TreeModel::iterator iter = get_model ()->get_iter (path);
	bool selected = iter->get_value (route_cols.selected);
	
	for (uint32_t i = 1; i <= n_channels; ++i) {
	
		if (!selected) {
			iter->set_value (route_cols.get_channel (i).label, Glib::ustring (""));
			continue;
		}
	
		iter->set_value (route_cols.get_channel (i).label, Glib::ustring("(none)"));
		iter->set_value (route_cols.get_channel (i).port, (AudioPort *) 0);
			
		Glib::RefPtr<Gtk::ListStore> port_list = iter->get_value (route_cols.port_list_col);
		Gtk::ListStore::Children::iterator port_it;
		uint32_t port_number = 1;
		
		for (port_it = port_list->children().begin(); port_it != port_list->children().end(); ++port_it) {
			if (port_number == i) {
				iter->set_value (route_cols.get_channel (i).label, (Glib::ustring) (*port_it)->get_value (route_cols.port_cols.label));
				iter->set_value (route_cols.get_channel (i).port, (AudioPort *) (*port_it)->get_value (route_cols.port_cols.port));
			}
			
			++port_number;
		}
	}
	
	update_config ();
}

void
ExportChannelSelector::ChannelTreeView::update_selection_text (Glib::ustring const & path, Glib::ustring const & new_text, uint32_t channel)
{
	Gtk::TreeModel::iterator iter = get_model ()->get_iter (path);
	iter->set_value (route_cols.get_channel (channel).label, new_text);
	
	Glib::RefPtr<Gtk::ListStore> port_list = iter->get_value (route_cols.port_list_col);
	Gtk::ListStore::Children::iterator port_it;
	
	for (port_it = port_list->children().begin(); port_it != port_list->children().end(); ++port_it) {
		Glib::ustring label = port_it->get_value (route_cols.port_cols.label);
		if (label == new_text) {
			iter->set_value (route_cols.get_channel (channel).port, (AudioPort *) (*port_it)[route_cols.port_cols.port]);
		}
	}
	
	update_config ();
}