gtk2_ardour/level_meter.cc

   1 /*
   2   Copyright (C) 2002 Paul Davis
   3
   4   This program is free software; you can redistribute it and/or modify
   5   it under the terms of the GNU General Public License as published by
   6   the Free Software Foundation; either version 2 of the License, or
   7   (at your option) any later version.
   8
   9   This program is distributed in the hope that it will be useful,
  10   but WITHOUT ANY WARRANTY; without even the implied warranty of
  11   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12   GNU General Public License for more details.
  13
  14   You should have received a copy of the GNU General Public License
  15   along with this program; if not, write to the Free Software
  16   Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  17
  18 */
  19
  20 #include <limits.h>
  21
  22 #include "ardour/session.h"
  23 #include "ardour/session_route.h"
  24 #include "ardour/dB.h"
  25 #include "ardour/meter.h"
  26
  27 #include <gtkmm2ext/utils.h>
  28 #include <gtkmm2ext/fastmeter.h>
  29 #include <gtkmm2ext/barcontroller.h>
  30 #include "midi++/manager.h"
  31 #include "pbd/fastlog.h"
  32
  33 #include "ardour_ui.h"
  34 #include "level_meter.h"
  35 #include "utils.h"
  36 #include "logmeter.h"
  37 #include "gui_thread.h"
  38 #include "keyboard.h"
  39 #include "public_editor.h"
  40
  41 #include "ardour/session.h"
  42
  43 #include "i18n.h"
  44
  45 using namespace ARDOUR;
  46 using namespace PBD;
  47 using namespace Gtkmm2ext;
  48 using namespace Gtk;
  49 using namespace std;
  50
  51 //sigc::signal<void> LevelMeter::ResetAllPeakDisplays;
  52 //sigc::signal<void,RouteGroup*> LevelMeter::ResetGroupPeakDisplays;
  53
  54
  55 LevelMeter::LevelMeter (Session* s)
  56         : _meter (0)
  57         , meter_length (0)
  58 {
  59         set_session (s);
  60         set_spacing (1);
  61         Config->ParameterChanged.connect (_parameter_connection, invalidator (*this), ui_bind (&LevelMeter::parameter_changed, this, _1), gui_context());
  62         UI::instance()->theme_changed.connect (sigc::mem_fun(*this, &LevelMeter::on_theme_changed));
  63         ColorsChanged.connect (sigc::mem_fun (*this, &LevelMeter::color_handler));
  64         max_peak = minus_infinity();
  65 }
  66
  67 void
  68 LevelMeter::on_theme_changed()
  69 {
  70         style_changed = true;
  71 }
  72
  73 LevelMeter::~LevelMeter ()
  74 {
  75         for (vector<MeterInfo>::iterator i = meters.begin(); i != meters.end(); i++) {
  76                 delete (*i).meter;
  77         }
  78 }
  79
  80 void
  81 LevelMeter::set_meter (PeakMeter* meter)
  82 {
  83         _configuration_connection.disconnect();
  84         _meter = meter;
  85
  86         if (_meter) {
  87                 _meter->ConfigurationChanged.connect (_configuration_connection, invalidator (*this), ui_bind (&LevelMeter::configuration_changed, this, _1, _2), gui_context());
  88         }
  89 }
  90
  91 float
  92 LevelMeter::update_meters ()
  93 {
  94         vector<MeterInfo>::iterator i;
  95         uint32_t n;
  96         float peak, mpeak;
  97
  98         if (!_meter) {
  99                 return 0.0f;
 100         }
 101
 102         for (n = 0, i = meters.begin(); i != meters.end(); ++i, ++n) {
 103                 if ((*i).packed) {
 104                         peak = _meter->peak_power (n);
 105                         (*i).meter->set (log_meter (peak));
 106                         mpeak = _meter->max_peak_power(n);
 107                         if (mpeak > max_peak) {
 108                                 max_peak = mpeak;
 109                         }
 110                         if (mpeak > max_peak) {
 111                                 max_peak = mpeak;
 112                         }
 113                 }
 114         }
 115         return max_peak;
 116 }
 117
 118 void
 119 LevelMeter::parameter_changed (string p)
 120 {
 121         ENSURE_GUI_THREAD (*this, &LevelMeter::parameter_changed, p)
 122
 123         if (p == "meter-hold") {
 124
 125                 vector<MeterInfo>::iterator i;
 126                 uint32_t n;
 127
 128                 for (n = 0, i = meters.begin(); i != meters.end(); ++i, ++n) {
 129
 130                         (*i).meter->set_hold_count ((uint32_t) floor(Config->get_meter_hold()));
 131                 }
 132         }
 133 }
 134
 135 void
 136 LevelMeter::configuration_changed (ChanCount /*in*/, ChanCount /*out*/)
 137 {
 138         color_changed = true;
 139         setup_meters (meter_length, regular_meter_width);
 140 }
 141
 142 void
 143 LevelMeter::hide_all_meters ()
 144 {
 145         for (vector<MeterInfo>::iterator i = meters.begin(); i != meters.end(); ++i) {
 146                 if ((*i).packed) {
 147                         remove (*((*i).meter));
 148                         (*i).packed = false;
 149                 }
 150         }
 151 }
 152
 153 void
 154 LevelMeter::setup_meters (int len, int initial_width)
 155 {
 156         hide_all_meters ();
 157
 158         if (!_meter) {
 159                 return; /* do it later or never */
 160         }
 161
 162         int32_t nmidi = _meter->input_streams().n_midi();
 163         uint32_t nmeters = _meter->input_streams().n_total();
 164         regular_meter_width = initial_width;
 165         meter_length = len;
 166
 167         guint16 width;
 168
 169         if (nmeters == 0) {
 170                 return;
 171         }
 172
 173         if (nmeters <= 2) {
 174                 width = regular_meter_width;
 175         } else {
 176                 width = thin_meter_width;
 177         }
 178
 179         while (meters.size() < nmeters) {
 180                 meters.push_back (MeterInfo());
 181         }
 182
 183         //cerr << "LevelMeter::setup_meters() called color_changed = " << color_changed << " colors: " << endl;//DEBUG
 184
 185         for (int32_t n = nmeters-1; nmeters && n >= 0 ; --n) {
 186                 uint32_t b, m, t, c;
 187                 if (n < nmidi) {
 188                         b = ARDOUR_UI::config()->canvasvar_MidiMeterColorBase.get();
 189                         m = ARDOUR_UI::config()->canvasvar_MidiMeterColorMid.get();
 190                         t = ARDOUR_UI::config()->canvasvar_MidiMeterColorTop.get();
 191                         c = ARDOUR_UI::config()->canvasvar_MeterColorClip.get();
 192                 } else {
 193                         b = ARDOUR_UI::config()->canvasvar_MeterColorBase.get();
 194                         m = ARDOUR_UI::config()->canvasvar_MeterColorMid.get();
 195                         t = ARDOUR_UI::config()->canvasvar_MeterColorTop.get();
 196                         c = ARDOUR_UI::config()->canvasvar_MeterColorClip.get();
 197                 }
 198                 if (meters[n].width != width || meters[n].length != len || color_changed) {
 199                         delete meters[n].meter;
 200                         meters[n].meter = new FastMeter ((uint32_t) floor (Config->get_meter_hold()), width, FastMeter::Vertical, len, b, m, t, c);
 201                         //cerr << "LevelMeter::setup_meters() w:l = " << width << ":" << len << endl;//DEBUG
 202                         meters[n].width = width;
 203                         meters[n].length = len;
 204                         meters[n].meter->add_events (Gdk::BUTTON_RELEASE_MASK);
 205                         meters[n].meter->signal_button_release_event().connect (sigc::bind (sigc::mem_fun(*this, &LevelMeter::meter_button_release), n));
 206                 }
 207
 208                 pack_end (*meters[n].meter, false, false);
 209                 meters[n].meter->show_all ();
 210                 meters[n].packed = true;
 211         }
 212         show();
 213         color_changed = false;
 214 }
 215
 216 gint
 217 LevelMeter::meter_button_release (GdkEventButton* ev, uint32_t /*which*/)
 218 {
 219         if (ev->button == 1) {
 220                 clear_meters();
 221         }
 222         return true;
 223 }
 224
 225
 226 void LevelMeter::clear_meters ()
 227 {
 228         for (vector<MeterInfo>::iterator i = meters.begin(); i < meters.end(); i++) {
 229                 (*i).meter->clear();
 230         }
 231         max_peak = minus_infinity();
 232 }
 233
 234 void LevelMeter::hide_meters ()
 235 {
 236         hide_all_meters();
 237 }
 238
 239 void
 240 LevelMeter::color_handler ()
 241 {
 242         color_changed = true;
 243 }
 244