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/*
Copyright (C) 2008 Paul Davis
Author: Dave Robillard
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 "ardour/processor.h"
#include "ardour/lv2_plugin.h"
#include "ardour_ui.h"
#include "lv2_plugin_ui.h"
using namespace Gtk;
using namespace ARDOUR;
using namespace PBD;
void
LV2PluginUI::lv2_ui_write(
LV2UI_Controller controller,
uint32_t port_index,
uint32_t buffer_size,
uint32_t format,
const void* buffer)
{
LV2PluginUI* me = (LV2PluginUI*)controller;
if (*(float*)buffer != me->_values[port_index])
me->_lv2->set_parameter(port_index, *(float*)buffer);
}
void
LV2PluginUI::parameter_changed (uint32_t port_index, float val)
{
if (val != _values[port_index]) {
parameter_update(port_index, val);
}
}
void
LV2PluginUI::parameter_update (uint32_t port_index, float val)
{
const LV2UI_Descriptor* ui_desc = slv2_ui_instance_get_descriptor(_inst);
LV2UI_Handle ui_handle = slv2_ui_instance_get_handle(_inst);
if (ui_desc->port_event)
ui_desc->port_event(ui_handle, port_index, 4, 0, &val);
_values[port_index] = val;
}
bool
LV2PluginUI::start_updating(GdkEventAny* event)
{
if (!_output_ports.empty()) {
_screen_update_connection.disconnect();
_screen_update_connection = ARDOUR_UI::instance()->RapidScreenUpdate.connect
(mem_fun(*this, &LV2PluginUI::output_update));
}
return false;
}
bool
LV2PluginUI::stop_updating(GdkEventAny* event)
{
if (!_output_ports.empty()) {
_screen_update_connection.disconnect();
}
return false;
}
void
LV2PluginUI::output_update()
{
/* FIXME only works with control output ports (which is all we support now anyway) */
uint32_t nports = _output_ports.size();
for (uint32_t i = 0; i < nports; ++i) {
uint32_t index = _output_ports[i];
parameter_changed(index, _lv2->get_parameter(index));
}
}
LV2PluginUI::LV2PluginUI (boost::shared_ptr<PluginInsert> pi, boost::shared_ptr<LV2Plugin> lv2p)
: PlugUIBase (pi)
, _lv2(lv2p)
{
_inst = slv2_ui_instantiate(
_lv2->slv2_plugin(), _lv2->slv2_ui(), LV2PluginUI::lv2_ui_write, this,
_lv2->features());
uint32_t num_ports = slv2_plugin_get_num_ports(lv2p->slv2_plugin());
for (uint32_t i = 0; i < num_ports; ++i) {
if (lv2p->parameter_is_output(i) && lv2p->parameter_is_control(i) && is_update_wanted(i)) {
_output_ports.push_back(i);
}
}
GtkWidget* c_widget = (GtkWidget*)slv2_ui_instance_get_widget(_inst);
_gui_widget = Glib::wrap(c_widget);
_gui_widget->show_all();
pack_start(*_gui_widget, true, true);
_values = new float[num_ports];
for (uint32_t i = 0; i < num_ports; ++i) {
bool ok;
uint32_t port = lv2p->nth_parameter(i, ok);
if (ok) {
_values[port] = lv2p->get_parameter(port);
if (lv2p->parameter_is_control(port) && lv2p->parameter_is_input(port)) {
parameter_update(port, _values[port]);
}
}
}
_lv2->ParameterChanged.connect(mem_fun(*this, &LV2PluginUI::parameter_changed));
}
LV2PluginUI::~LV2PluginUI ()
{
delete[] _values;
// plugin destructor destroys the GUI
}
int
LV2PluginUI::get_preferred_height ()
{
Gtk::Requisition r = size_request();
return r.height;
}
int
LV2PluginUI::get_preferred_width ()
{
Gtk::Requisition r = size_request();
return r.width;
}
int
LV2PluginUI::package (Gtk::Window& win)
{
/* forward configure events to plugin window */
win.signal_configure_event().connect (mem_fun (*this, &LV2PluginUI::configure_handler));
win.signal_map_event().connect (mem_fun (*this, &LV2PluginUI::start_updating));
win.signal_unmap_event().connect (mem_fun (*this, &LV2PluginUI::stop_updating));
return 0;
}
bool
LV2PluginUI::configure_handler (GdkEventConfigure* ev)
{
std::cout << "CONFIGURE" << std::endl;
return false;
}
bool
LV2PluginUI::is_update_wanted(uint32_t index)
{
/* FIXME this should check the port notification properties, which nobody sets now anyway :) */
return true;
}
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