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livetrax/gtk2_ardour/level_meter.cc

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/*
Copyright (C) 2002 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 <limits.h>
#include <ardour/io.h>
#include <ardour/route.h>
#include <ardour/route_group.h>
#include <ardour/session.h>
#include <ardour/session_route.h>
#include <ardour/dB.h>
#include <ardour/meter.h>
#include <gtkmm2ext/utils.h>
#include <gtkmm2ext/fastmeter.h>
#include <gtkmm2ext/stop_signal.h>
#include <gtkmm2ext/barcontroller.h>
#include <midi++/manager.h>
#include <pbd/fastlog.h>
#include "ardour_ui.h"
#include "level_meter.h"
#include "utils.h"
#include "logmeter.h"
#include "gui_thread.h"
#include "keyboard.h"
#include "public_editor.h"
#include <ardour/session.h>
#include <ardour/route.h>
#include "i18n.h"
using namespace ARDOUR;
using namespace PBD;
using namespace Gtkmm2ext;
using namespace Gtk;
using namespace sigc;
using namespace std;
//sigc::signal<void> LevelMeter::ResetAllPeakDisplays;
//sigc::signal<void,RouteGroup*> LevelMeter::ResetGroupPeakDisplays;
LevelMeter::LevelMeter (boost::shared_ptr<IO> io, Session& s)
: _io (io),
_session (s)
{
set_spacing (1);
Config->ParameterChanged.connect (mem_fun (*this, &LevelMeter::parameter_changed));
UI::instance()->theme_changed.connect (mem_fun(*this, &LevelMeter::on_theme_changed));
ColorsChanged.connect (mem_fun (*this, &LevelMeter::color_handler));
max_peak = minus_infinity();
}
void
LevelMeter::on_theme_changed()
{
style_changed = true;
}
LevelMeter::~LevelMeter ()
{
for (vector<MeterInfo>::iterator i = meters.begin(); i != meters.end(); i++) {
if ((*i).meter) {
delete (*i).meter;
}
}
}
float
LevelMeter::update_meters ()
{
vector<MeterInfo>::iterator i;
uint32_t n;
float peak, mpeak;
for (n = 0, i = meters.begin(); i != meters.end(); ++i, ++n) {
if ((*i).packed) {
peak = _io->peak_meter().peak_power (n);
(*i).meter->set (log_meter (peak));
mpeak = _io->peak_meter().max_peak_power(n);
if (mpeak > max_peak) {
max_peak = mpeak;
}
if (mpeak > max_peak) {
max_peak = mpeak;
}
}
}
return max_peak;
}
void
LevelMeter::parameter_changed(const char* parameter_name)
{
#define PARAM_IS(x) (!strcmp (parameter_name, (x)))
ENSURE_GUI_THREAD (bind (mem_fun(*this, &LevelMeter::parameter_changed), parameter_name));
if (PARAM_IS ("meter-hold")) {
vector<MeterInfo>::iterator i;
uint32_t n;
for (n = 0, i = meters.begin(); i != meters.end(); ++i, ++n) {
(*i).meter->set_hold_count ((uint32_t) floor(Config->get_meter_hold()));
}
}
#undef PARAM_IS
}
void
LevelMeter::hide_all_meters ()
{
for (vector<MeterInfo>::iterator i = meters.begin(); i != meters.end(); ++i) {
if ((*i).packed) {
remove (*((*i).meter));
(*i).packed = false;
}
}
}
void
LevelMeter::setup_meters (int len, int initial_width)
{
uint32_t nmeters = _io->n_outputs().n_total();
regular_meter_width = initial_width;
guint16 width;
hide_all_meters ();
Route* r;
if ((r = dynamic_cast<Route*> (_io.get())) != 0) {
switch (r->meter_point()) {
case MeterPreFader:
case MeterInput:
nmeters = r->n_inputs().n_total();
break;
case MeterPostFader:
nmeters = r->n_outputs().n_total();
break;
}
} else {
nmeters = _io->n_outputs().n_total();
}
if (nmeters == 0) {
return;
}
if (nmeters <= 2) {
width = regular_meter_width;
} else {
width = thin_meter_width;
}
while (meters.size() < nmeters) {
meters.push_back (MeterInfo());
}
int b = ARDOUR_UI::config()->canvasvar_MeterColorBase.get();
int m = ARDOUR_UI::config()->canvasvar_MeterColorMid.get();
int t = ARDOUR_UI::config()->canvasvar_MeterColorTop.get();
int c = ARDOUR_UI::config()->canvasvar_MeterColorClip.get();
//cerr << "LevelMeter::setup_meters() called color_changed = " << color_changed << " colors: " << endl;//DEBUG
for (int32_t n = nmeters-1; nmeters && n >= 0 ; --n) {
if (meters[n].width != width || meters[n].length != len || color_changed) {
delete meters[n].meter;
meters[n].meter = new FastMeter ((uint32_t) floor (Config->get_meter_hold()), width, FastMeter::Vertical, len, b, m, t, c);
//cerr << "LevelMeter::setup_meters() w:l = " << width << ":" << len << endl;//DEBUG
meters[n].width = width;
meters[n].length = len;
meters[n].meter->add_events (Gdk::BUTTON_RELEASE_MASK);
meters[n].meter->signal_button_release_event().connect (bind (mem_fun(*this, &LevelMeter::meter_button_release), n));
}
pack_end (*meters[n].meter, false, false);
meters[n].meter->show_all ();
meters[n].packed = true;
}
show();
color_changed = false;
}
gint
LevelMeter::meter_button_release (GdkEventButton* ev, uint32_t which)
{
if (ev->button == 1) {
clear_meters();
}
return true;
}
void LevelMeter::clear_meters ()
{
for (vector<MeterInfo>::iterator i = meters.begin(); i < meters.end(); i++) {
(*i).meter->clear();
}
max_peak = minus_infinity();
}
void LevelMeter::hide_meters ()
{
hide_all_meters();
}
void
LevelMeter::color_handler ()
{
color_changed = true;
}