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livetrax/gtk2_ardour/lv2_plugin_ui.cc
David Robillard 4c5ef5318e Sent precise transport information to LV2 plugins via events.
We send the full transport state (frame position, BBT time, transport speed,
meter) to the plugin:

 * At the start of a cycle whenever a relocate or transport speed change has
   occurred

 * On every occurrence of a meter change within a cycle

This means the plugin gets a sample accurate meter/tempo map, even if the meter
changes in the middle of a cycle.  However, this is not quite right yet: things
can get wonky if the tempo map is edited while rolling, since this code will
not detect the change and fail to update the plugin at the start of the cycle.

Other changes:

 * Factor out TempoMetric::set_metric() and simplify some tempo functions
 * Clean up LV2 URID stuff


git-svn-id: svn://localhost/ardour2/branches/3.0@13513 d708f5d6-7413-0410-9779-e7cbd77b26cf
2012-11-17 18:41:19 +00:00

459 lines
11 KiB
C++

/*
Copyright (C) 2008-2012 Paul Davis
Author: David 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/lv2_plugin.h"
#include "ardour/session.h"
#include "pbd/error.h"
#include "ardour_ui.h"
#include "lv2_plugin_ui.h"
#include "lv2/lv2plug.in/ns/extensions/ui/ui.h"
#include <lilv/lilv.h>
#include <suil/suil.h>
#include "i18n.h"
using namespace ARDOUR;
using namespace Gtk;
using namespace PBD;
#define NS_UI "http://lv2plug.in/ns/extensions/ui#"
static SuilHost* ui_host = NULL;
void
LV2PluginUI::write_from_ui(void* controller,
uint32_t port_index,
uint32_t buffer_size,
uint32_t format,
const void* buffer)
{
LV2PluginUI* me = (LV2PluginUI*)controller;
if (format == 0) {
if (port_index >= me->_controllables.size()) {
return;
}
boost::shared_ptr<AutomationControl> ac = me->_controllables[port_index];
if (ac) {
ac->set_value(*(const float*)buffer);
}
} else if (format == me->_lv2->urids.atom_eventTransfer) {
const int cnt = me->_pi->get_count();
for (int i=0; i < cnt; i++ ) {
boost::shared_ptr<LV2Plugin> lv2i = boost::dynamic_pointer_cast<LV2Plugin> (me->_pi->plugin(i));
lv2i->write_from_ui(port_index, format, buffer_size, (const uint8_t*)buffer);
}
}
}
void
LV2PluginUI::write_to_ui(void* controller,
uint32_t port_index,
uint32_t buffer_size,
uint32_t format,
const void* buffer)
{
LV2PluginUI* me = (LV2PluginUI*)controller;
if (me->_inst) {
suil_instance_port_event((SuilInstance*)me->_inst,
port_index, buffer_size, format, buffer);
}
}
uint32_t
LV2PluginUI::port_index(void* controller, const char* symbol)
{
return ((LV2PluginUI*)controller)->_lv2->port_index(symbol);
}
void
LV2PluginUI::touch(void* controller,
uint32_t port_index,
bool grabbed)
{
LV2PluginUI* me = (LV2PluginUI*)controller;
if (port_index >= me->_controllables.size()) {
return;
}
ControllableRef control = me->_controllables[port_index];
if (grabbed) {
control->start_touch(control->session().transport_frame());
} else {
control->stop_touch(false, control->session().transport_frame());
}
}
void
LV2PluginUI::update_timeout()
{
_lv2->emit_to_ui(this, &LV2PluginUI::write_to_ui);
}
void
LV2PluginUI::on_external_ui_closed(void* controller)
{
LV2PluginUI* me = (LV2PluginUI*)controller;
me->_screen_update_connection.disconnect();
me->_external_ui_ptr = NULL;
}
void
LV2PluginUI::parameter_changed(uint32_t port_index, float val)
{
PlugUIBase::parameter_changed(port_index, val);
if (val != _values[port_index]) {
parameter_update(port_index, val);
}
}
void
LV2PluginUI::parameter_update(uint32_t port_index, float val)
{
if (!_inst) {
return;
}
suil_instance_port_event((SuilInstance*)_inst, port_index, 4, 0, &val);
_values[port_index] = val;
}
bool
LV2PluginUI::start_updating(GdkEventAny*)
{
if (!_output_ports.empty()) {
_screen_update_connection.disconnect();
_screen_update_connection = ARDOUR_UI::instance()->RapidScreenUpdate.connect
(sigc::mem_fun(*this, &LV2PluginUI::output_update));
}
return false;
}
bool
LV2PluginUI::stop_updating(GdkEventAny*)
{
//cout << "stop_updating" << endl;
if (!_output_ports.empty()) {
_screen_update_connection.disconnect();
}
return false;
}
void
LV2PluginUI::output_update()
{
//cout << "output_update" << endl;
if (_external_ui_ptr) {
LV2_EXTERNAL_UI_RUN(_external_ui_ptr);
}
/* 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)
, _pi(pi)
, _lv2(lv2p)
, _gui_widget(NULL)
, _ardour_buttons_box(NULL)
, _values(NULL)
, _external_ui_ptr(NULL)
, _inst(NULL)
{
}
void
LV2PluginUI::lv2ui_instantiate(const std::string& title)
{
bool is_external_ui = _lv2->is_external_ui();
LV2_Feature** features_src = const_cast<LV2_Feature**>(_lv2->features());
LV2_Feature** features = const_cast<LV2_Feature**>(_lv2->features());
size_t features_count = 0;
while (*features++) {
features_count++;
}
Gtk::Alignment* container = NULL;
if (is_external_ui) {
_external_ui_host.ui_closed = LV2PluginUI::on_external_ui_closed;
_external_ui_host.plugin_human_id = strdup(title.c_str());
_external_ui_feature.URI = LV2_EXTERNAL_UI_URI;
_external_ui_feature.data = &_external_ui_host;
++features_count;
features = (LV2_Feature**)malloc(
sizeof(LV2_Feature*) * (features_count + 1));
for (size_t i = 0; i < features_count - 1; ++i) {
features[i] = features_src[i];
}
features[features_count - 1] = &_external_ui_feature;
features[features_count] = NULL;
} else {
_ardour_buttons_box = manage (new Gtk::HBox);
_ardour_buttons_box->set_spacing (6);
_ardour_buttons_box->set_border_width (6);
_ardour_buttons_box->pack_end (focus_button, false, false);
_ardour_buttons_box->pack_end (bypass_button, false, false, 10);
_ardour_buttons_box->pack_end (delete_button, false, false);
_ardour_buttons_box->pack_end (save_button, false, false);
_ardour_buttons_box->pack_end (add_button, false, false);
_ardour_buttons_box->pack_end (_preset_combo, false, false);
_ardour_buttons_box->pack_end (_preset_modified, false, false);
_ardour_buttons_box->show_all();
pack_start(*_ardour_buttons_box, false, false);
_gui_widget = Gtk::manage((container = new Gtk::Alignment()));
pack_start(*_gui_widget, true, true);
_gui_widget->show();
_parent_feature.URI = LV2_UI__parent;
_parent_feature.data = _gui_widget->gobj();
++features_count;
features = (LV2_Feature**)malloc(
sizeof(LV2_Feature*) * (features_count + 1));
for (size_t i = 0; i < features_count - 1; ++i) {
features[i] = features_src[i];
}
features[features_count - 1] = &_parent_feature;
features[features_count] = NULL;
}
if (!ui_host) {
ui_host = suil_host_new(LV2PluginUI::write_from_ui,
LV2PluginUI::port_index,
NULL, NULL);
suil_host_set_touch_func(ui_host, LV2PluginUI::touch);
}
const char* container_type = (is_external_ui)
? NS_UI "external"
: NS_UI "GtkUI";
const LilvUI* ui = (const LilvUI*)_lv2->c_ui();
_inst = suil_instance_new(
ui_host,
this,
container_type,
_lv2->uri(),
lilv_node_as_uri(lilv_ui_get_uri(ui)),
lilv_node_as_uri((const LilvNode*)_lv2->c_ui_type()),
lilv_uri_to_path(lilv_node_as_uri(lilv_ui_get_bundle_uri(ui))),
lilv_uri_to_path(lilv_node_as_uri(lilv_ui_get_binary_uri(ui))),
features);
free(features);
#define GET_WIDGET(inst) suil_instance_get_widget((SuilInstance*)inst);
const uint32_t num_ports = _lv2->num_ports();
for (uint32_t i = 0; i < num_ports; ++i) {
if (_lv2->parameter_is_output(i)
&& _lv2->parameter_is_control(i)
&& is_update_wanted(i)) {
_output_ports.push_back(i);
}
}
_external_ui_ptr = NULL;
if (_inst) {
if (!is_external_ui) {
GtkWidget* c_widget = (GtkWidget*)GET_WIDGET(_inst);
if (!c_widget) {
error << _("failed to get LV2 UI widget") << endmsg;
suil_instance_free((SuilInstance*)_inst);
_inst = NULL;
return;
}
if (!container->get_child()) {
// Suil didn't add the UI to the container for us, so do it now
container->add(*Gtk::manage(Glib::wrap(c_widget)));
}
container->show_all();
} else {
_external_ui_ptr = (struct lv2_external_ui*)GET_WIDGET(_inst);
}
}
_values = new float[num_ports];
_controllables.resize(num_ports);
for (uint32_t i = 0; i < num_ports; ++i) {
bool ok;
uint32_t port = _lv2->nth_parameter(i, ok);
if (ok) {
_values[port] = _lv2->get_parameter(port);
_controllables[port] = boost::dynamic_pointer_cast<ARDOUR::AutomationControl> (
insert->control(Evoral::Parameter(PluginAutomation, 0, port)));
if (_lv2->parameter_is_control(port) && _lv2->parameter_is_input(port)) {
parameter_update(port, _values[port]);
}
}
}
if (_lv2->has_message_output()) {
_lv2->enable_ui_emmission();
ARDOUR_UI::instance()->RapidScreenUpdate.connect(
sigc::mem_fun(*this, &LV2PluginUI::update_timeout));
}
}
void
LV2PluginUI::lv2ui_free()
{
stop_updating (0);
if (_gui_widget) {
remove (*_gui_widget);
_gui_widget = NULL;
}
if (_inst) {
suil_instance_free((SuilInstance*)_inst);
_inst = NULL;
}
}
LV2PluginUI::~LV2PluginUI ()
{
if (_values) {
delete[] _values;
}
/* Close and delete GUI. */
lv2ui_free();
_screen_update_connection.disconnect();
if (_lv2->is_external_ui()) {
/* External UI is no longer valid.
on_window_hide() will not try to use it if is NULL.
*/
_external_ui_ptr = NULL;
}
}
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;
}
bool
LV2PluginUI::resizable()
{
return _lv2->ui_is_resizable();
}
int
LV2PluginUI::package(Gtk::Window& win)
{
if (_external_ui_ptr) {
_win_ptr = &win;
} else {
/* forward configure events to plugin window */
win.signal_configure_event().connect(
sigc::mem_fun(*this, &LV2PluginUI::configure_handler));
win.signal_map_event().connect(
sigc::mem_fun(*this, &LV2PluginUI::start_updating));
win.signal_unmap_event().connect(
sigc::mem_fun(*this, &LV2PluginUI::stop_updating));
}
return 0;
}
bool
LV2PluginUI::configure_handler(GdkEventConfigure*)
{
std::cout << "CONFIGURE" << std::endl;
return false;
}
bool
LV2PluginUI::is_update_wanted(uint32_t /*index*/)
{
/* FIXME: use port notification properties
and/or new UI extension subscription methods
*/
return true;
}
bool
LV2PluginUI::on_window_show(const std::string& title)
{
//cout << "on_window_show - " << title << endl; flush(cout);
if (_lv2->is_external_ui()) {
if (_external_ui_ptr) {
LV2_EXTERNAL_UI_SHOW(_external_ui_ptr);
return false;
}
lv2ui_instantiate(title);
if (!_external_ui_ptr) {
return false;
}
LV2_EXTERNAL_UI_SHOW(_external_ui_ptr);
_screen_update_connection.disconnect();
_screen_update_connection = ARDOUR_UI::instance()->RapidScreenUpdate.connect
(sigc::mem_fun(*this, &LV2PluginUI::output_update));
return false;
} else {
lv2ui_instantiate("gtk2gui");
}
return true;
}
void
LV2PluginUI::on_window_hide()
{
//cout << "on_window_hide" << endl; flush(cout);
if (_external_ui_ptr) {
LV2_EXTERNAL_UI_HIDE(_external_ui_ptr);
//slv2_ui_instance_get_descriptor(_inst)->cleanup(_inst);
//_external_ui_ptr = NULL;
//_screen_update_connection.disconnect();
} else {
lv2ui_free();
}
}