gtk2_ardour/level_meter.cc

   1 /*
   2  * Copyright (C) 2008-2011 Carl Hetherington <carl@carlh.net>
   3  * Copyright (C) 2008-2014 David Robillard <d@drobilla.net>
   4  * Copyright (C) 2008-2016 Paul Davis <paul@linuxaudiosystems.com>
   5  * Copyright (C) 2013-2019 Robin Gareus <robin@gareus.org>
   6  * Copyright (C) 2014 Ben Loftis <ben@harrisonconsoles.com>
   7  * Copyright (C) 2015 Tim Mayberry <mojofunk@gmail.com>
   8  *
   9  * This program is free software; you can redistribute it and/or modify
  10  * it under the terms of the GNU General Public License as published by
  11  * the Free Software Foundation; either version 2 of the License, or
  12  * (at your option) any later version.
  13  *
  14  * This program is distributed in the hope that it will be useful,
  15  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  16  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  17  * GNU General Public License for more details.
  18  *
  19  * You should have received a copy of the GNU General Public License along
  20  * with this program; if not, write to the Free Software Foundation, Inc.,
  21  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  22  */
  23
  24 #include <limits.h>
  25
  26 #include "ardour/meter.h"
  27 #include "ardour/logmeter.h"
  28
  29 #include <gtkmm2ext/utils.h>
  30 #include "pbd/fastlog.h"
  31
  32 #include "level_meter.h"
  33 #include "utils.h"
  34 #include "gui_thread.h"
  35 #include "keyboard.h"
  36 #include "public_editor.h"
  37 #include "ui_config.h"
  38
  39 #include "pbd/i18n.h"
  40
  41 using namespace ARDOUR;
  42 using namespace ARDOUR_UI_UTILS;
  43 using namespace PBD;
  44 using namespace ArdourWidgets;
  45 using namespace Gtk;
  46 using namespace std;
  47
  48 LevelMeterBase::LevelMeterBase (Session* s, PBD::EventLoop::InvalidationRecord* ir, FastMeter::Orientation o)
  49         : parent_invalidator(ir)
  50         , _meter (0)
  51         , _meter_orientation(o)
  52         , regular_meter_width (6)
  53         , meter_length (0)
  54         , thin_meter_width(2)
  55         , max_peak (minus_infinity())
  56         , visible_meter_type (MeterType(0))
  57         , midi_count (0)
  58         , meter_count (0)
  59         , max_visible_meters (0)
  60         , color_changed (false)
  61 {
  62         set_session (s);
  63
  64         Config->ParameterChanged.connect (_parameter_connection, parent_invalidator, boost::bind (&LevelMeterBase::parameter_changed, this, _1), gui_context());
  65         UIConfiguration::instance().ParameterChanged.connect (sigc::mem_fun(*this, &LevelMeterBase::parameter_changed));
  66         UIConfiguration::instance().ColorsChanged.connect (sigc::mem_fun (*this, &LevelMeterBase::color_handler));
  67 }
  68
  69 LevelMeterBase::~LevelMeterBase ()
  70 {
  71         _configuration_connection.disconnect();
  72         _meter_type_connection.disconnect();
  73         _parameter_connection.disconnect();
  74         for (vector<MeterInfo>::iterator i = meters.begin(); i != meters.end(); i++) {
  75                 delete (*i).meter;
  76         }
  77         meters.clear();
  78 }
  79
  80 void
  81 LevelMeterBase::set_meter (PeakMeter* meter)
  82 {
  83         _configuration_connection.disconnect();
  84         _meter_type_connection.disconnect();
  85
  86         _meter = meter;
  87         color_changed = true; // force update
  88
  89         if (_meter) {
  90                 _meter->ConfigurationChanged.connect (_configuration_connection, parent_invalidator, boost::bind (&LevelMeterBase::configuration_changed, this, _1, _2), gui_context());
  91                 _meter->MeterTypeChanged.connect (_meter_type_connection, parent_invalidator, boost::bind (&LevelMeterBase::meter_type_changed, this, _1), gui_context());
  92         }
  93 }
  94
  95 static float meter_lineup_cfg(MeterLineUp lul, float offset) {
  96         switch (lul) {
  97                 case MeteringLineUp24:
  98                         return offset + 6.0;
  99                 case MeteringLineUp20:
 100                         return offset + 2.0;
 101                 case MeteringLineUp18:
 102                         return offset;
 103                 case MeteringLineUp15:
 104                         return offset - 3.0;
 105                 default:
 106                         break;
 107         }
 108         return offset;
 109 }
 110
 111 static float meter_lineup(float offset) {
 112         return meter_lineup_cfg (UIConfiguration::instance().get_meter_line_up_level(), offset);
 113 }
 114
 115 static float vu_standard() {
 116         // note - default meter config is +2dB (france)
 117         switch (UIConfiguration::instance().get_meter_vu_standard()) {
 118                 default:
 119                 case MeteringVUfrench:   // 0VU = -2dBu
 120                         return 0;
 121                 case MeteringVUamerican: // 0VU =  0dBu
 122                         return -2;
 123                 case MeteringVUstandard: // 0VU = +4dBu
 124                         return -6;
 125                 case MeteringVUeight:    // 0VU = +8dBu
 126                         return -10;
 127         }
 128 }
 129
 130 float
 131 LevelMeterBase::update_meters ()
 132 {
 133         vector<MeterInfo>::iterator i;
 134         uint32_t n;
 135
 136         if (!_meter) {
 137                 return 0.0f;
 138         }
 139
 140         uint32_t nmidi = _meter->input_streams().n_midi();
 141
 142         for (n = 0, i = meters.begin(); i != meters.end(); ++i, ++n) {
 143                 if ((*i).packed) {
 144                         const float mpeak = _meter->meter_level(n, MeterMaxPeak);
 145                         if (mpeak > (*i).max_peak) {
 146                                 (*i).max_peak = mpeak;
 147                                 (*i).meter->set_highlight(mpeak >= UIConfiguration::instance().get_meter_peak());
 148                         }
 149                         if (mpeak > max_peak) {
 150                                 max_peak = mpeak;
 151                         }
 152
 153                         if (n < nmidi) {
 154                                 (*i).meter->set (_meter->meter_level (n, MeterPeak));
 155                         } else {
 156                                 MeterType meter_type = _meter->meter_type ();
 157                                 const float peak = _meter->meter_level (n, meter_type);
 158                                 if (meter_type == MeterPeak) {
 159                                         (*i).meter->set (log_meter (peak));
 160                                 } else if (meter_type == MeterPeak0dB) {
 161                                         (*i).meter->set (log_meter0dB (peak));
 162                                 } else if (meter_type == MeterIEC1NOR) {
 163                                         (*i).meter->set (meter_deflect_nordic (peak + meter_lineup(0)));
 164                                 } else if (meter_type == MeterIEC1DIN) {
 165                                         (*i).meter->set (meter_deflect_din (peak + meter_lineup_cfg(UIConfiguration::instance().get_meter_line_up_din(), 3.0)));
 166                                 } else if (meter_type == MeterIEC2BBC || meter_type == MeterIEC2EBU) {
 167                                         (*i).meter->set (meter_deflect_ppm (peak + meter_lineup(0)));
 168                                 } else if (meter_type == MeterVU) {
 169                                         (*i).meter->set (meter_deflect_vu (peak + vu_standard() + meter_lineup(0)));
 170                                 } else if (meter_type == MeterK12) {
 171                                         (*i).meter->set (meter_deflect_k (peak, 12), meter_deflect_k(_meter->meter_level(n, MeterPeak), 12));
 172                                 } else if (meter_type == MeterK14) {
 173                                         (*i).meter->set (meter_deflect_k (peak, 14), meter_deflect_k(_meter->meter_level(n, MeterPeak), 14));
 174                                 } else if (meter_type == MeterK20) {
 175                                         (*i).meter->set (meter_deflect_k (peak, 20), meter_deflect_k(_meter->meter_level(n, MeterPeak), 20));
 176                                 } else { // RMS
 177                                         (*i).meter->set (log_meter (peak), log_meter(_meter->meter_level(n, MeterPeak)));
 178                                 }
 179                         }
 180                 }
 181         }
 182         return max_peak;
 183 }
 184
 185 void
 186 LevelMeterBase::parameter_changed (string p)
 187 {
 188         ENSURE_GUI_THREAD (*this, &LevelMeterBase::parameter_changed, p)
 189
 190         if (p == "meter-hold") {
 191                 vector<MeterInfo>::iterator i;
 192                 uint32_t n;
 193
 194                 for (n = 0, i = meters.begin(); i != meters.end(); ++i, ++n) {
 195                         (*i).meter->set_hold_count ((uint32_t) floor(UIConfiguration::instance().get_meter_hold()));
 196                 }
 197         }
 198         else if (p == "meter-line-up-level") {
 199                 color_changed = true;
 200                 setup_meters (meter_length, regular_meter_width, thin_meter_width);
 201         }
 202         else if (p == "meter-style-led") {
 203                 color_changed = true;
 204                 setup_meters (meter_length, regular_meter_width, thin_meter_width);
 205         }
 206         else if (p == "meter-peak") {
 207                 vector<MeterInfo>::iterator i;
 208                 uint32_t n;
 209
 210                 for (n = 0, i = meters.begin(); i != meters.end(); ++i, ++n) {
 211                         (*i).max_peak = minus_infinity();
 212                 }
 213         }
 214 }
 215
 216 void
 217 LevelMeterBase::configuration_changed (ChanCount /*in*/, ChanCount /*out*/)
 218 {
 219         setup_meters (meter_length, regular_meter_width, thin_meter_width);
 220 }
 221
 222 void
 223 LevelMeterBase::meter_type_changed (MeterType t)
 224 {
 225         setup_meters (meter_length, regular_meter_width, thin_meter_width);
 226 }
 227
 228 void
 229 LevelMeterBase::hide_all_meters ()
 230 {
 231         for (vector<MeterInfo>::iterator i = meters.begin(); i != meters.end(); ++i) {
 232                 if ((*i).packed) {
 233                         mtr_remove (*((*i).meter));
 234                         (*i).packed = false;
 235                 }
 236         }
 237         meter_count = 0;
 238 }
 239
 240 void
 241 LevelMeterBase::set_max_audio_meter_count (uint32_t cnt)
 242 {
 243         if (cnt == max_visible_meters) {
 244                 return;
 245         }
 246         color_changed = true; // force re-setup
 247         max_visible_meters = cnt;
 248         setup_meters (meter_length, regular_meter_width, thin_meter_width);
 249 }
 250
 251 void
 252 LevelMeterBase::setup_meters (int len, int initial_width, int thin_width)
 253 {
 254
 255         if (!_meter) {
 256                 hide_all_meters ();
 257                 return; /* do it later or never */
 258         }
 259
 260         MeterType meter_type = _meter->meter_type ();
 261         uint32_t nmidi = _meter->input_streams().n_midi();
 262         uint32_t nmeters = _meter->input_streams().n_total();
 263         regular_meter_width = initial_width;
 264         thin_meter_width = thin_width;
 265         meter_length = len;
 266
 267         guint16 width;
 268
 269         if (nmeters == 0) {
 270                 hide_all_meters ();
 271                 return;
 272         }
 273
 274         if (nmeters <= 2) {
 275                 width = regular_meter_width;
 276         } else {
 277                 width = thin_meter_width;
 278         }
 279
 280         width = rint (width * UIConfiguration::instance().get_ui_scale());
 281
 282         if (   meters.size() > 0
 283             && nmidi == midi_count
 284             && nmeters == meter_count
 285             && meters[0].width == width
 286             && meters[0].length == len
 287             && !color_changed
 288             && meter_type == visible_meter_type) {
 289                 return;
 290         }
 291
 292 #if 0
 293         printf("Meter redraw: %s %s %s %s %s %s\n",
 294                         (meters.size() > 0) ? "yes" : "no",
 295                         (meters.size() > 0 &&  meters[0].width == width) ? "yes" : "no",
 296                         (meters.size() > 0 &&  meters[0].length == len) ? "yes" : "no",
 297                         (nmeters == meter_count) ? "yes" : "no",
 298                         (meter_type == visible_meter_type) ? "yes" : "no",
 299                         !color_changed ? "yes" : "no"
 300                         );
 301 #endif
 302
 303         hide_all_meters ();
 304         while (meters.size() < nmeters) {
 305                 meters.push_back (MeterInfo());
 306         }
 307
 308         //cerr << "LevelMeterBase::setup_meters() called color_changed = " << color_changed << " colors: " << endl;//DEBUG
 309
 310         for (int32_t n = nmeters-1; nmeters && n >= 0 ; --n) {
 311                 uint32_t c[10];
 312                 uint32_t b[4];
 313                 float stp[4];
 314                 int styleflags = UIConfiguration::instance().get_meter_style_led() ? 3 : 1;
 315                 b[0] = UIConfiguration::instance().color ("meter background bottom");
 316                 b[1] = UIConfiguration::instance().color ("meter background top");
 317                 b[2] = 0x991122ff; // red highlight gradient Bot
 318                 b[3] = 0x551111ff; // red highlight gradient Top
 319                 if ((uint32_t) n < nmidi) {
 320                         c[0] = UIConfiguration::instance().color ("midi meter color0");
 321                         c[1] = UIConfiguration::instance().color ("midi meter color1");
 322                         c[2] = UIConfiguration::instance().color ("midi meter color2");
 323                         c[3] = UIConfiguration::instance().color ("midi meter color3");
 324                         c[4] = UIConfiguration::instance().color ("midi meter color4");
 325                         c[5] = UIConfiguration::instance().color ("midi meter color5");
 326                         c[6] = UIConfiguration::instance().color ("midi meter color6");
 327                         c[7] = UIConfiguration::instance().color ("midi meter color7");
 328                         c[8] = UIConfiguration::instance().color ("midi meter color8");
 329                         c[9] = UIConfiguration::instance().color ("midi meter color9");
 330                         stp[0] = 115.0 *  32.0 / 128.0;
 331                         stp[1] = 115.0 *  64.0 / 128.0;
 332                         stp[2] = 115.0 * 100.0 / 128.0;
 333                         stp[3] = 115.0 * 112.0 / 128.0;
 334                 } else {
 335                         c[0] = UIConfiguration::instance().color ("meter color0");
 336                         c[1] = UIConfiguration::instance().color ("meter color1");
 337                         c[2] = UIConfiguration::instance().color ("meter color2");
 338                         c[3] = UIConfiguration::instance().color ("meter color3");
 339                         c[4] = UIConfiguration::instance().color ("meter color4");
 340                         c[5] = UIConfiguration::instance().color ("meter color5");
 341                         c[6] = UIConfiguration::instance().color ("meter color6");
 342                         c[7] = UIConfiguration::instance().color ("meter color7");
 343                         c[8] = UIConfiguration::instance().color ("meter color8");
 344                         c[9] = UIConfiguration::instance().color ("meter color9");
 345
 346                         switch (meter_type) {
 347                                 case MeterK20:
 348                                         stp[0] = 115.0 * meter_deflect_k(-40, 20);  //-20
 349                                         stp[1] = 115.0 * meter_deflect_k(-20, 20);  //  0
 350                                         stp[2] = 115.0 * meter_deflect_k(-18, 20);  // +2
 351                                         stp[3] = 115.0 * meter_deflect_k(-16, 20);  // +4
 352                                         c[0] = c[1] = 0x008800ff;
 353                                         c[2] = c[3] = 0x00ff00ff;
 354                                         c[4] = c[5] = 0xffff00ff;
 355                                         c[6] = c[7] = 0xffff00ff;
 356                                         c[8] = c[9] = 0xff0000ff;
 357                                         break;
 358                                 case MeterK14:
 359                                         stp[0] = 115.0 * meter_deflect_k(-34, 14);  //-20
 360                                         stp[1] = 115.0 * meter_deflect_k(-14, 14);  //  0
 361                                         stp[2] = 115.0 * meter_deflect_k(-12, 14);  // +2
 362                                         stp[3] = 115.0 * meter_deflect_k(-10, 14);  // +4
 363                                         c[0] = c[1] = 0x008800ff;
 364                                         c[2] = c[3] = 0x00ff00ff;
 365                                         c[4] = c[5] = 0xffff00ff;
 366                                         c[6] = c[7] = 0xffff00ff;
 367                                         c[8] = c[9] = 0xff0000ff;
 368                                         break;
 369                                 case MeterK12:
 370                                         stp[0] = 115.0 * meter_deflect_k(-32, 12);  //-20
 371                                         stp[1] = 115.0 * meter_deflect_k(-12, 12);  //  0
 372                                         stp[2] = 115.0 * meter_deflect_k(-10, 12);  // +2
 373                                         stp[3] = 115.0 * meter_deflect_k( -8, 12);  // +4
 374                                         c[0] = c[1] = 0x008800ff;
 375                                         c[2] = c[3] = 0x00ff00ff;
 376                                         c[4] = c[5] = 0xffff00ff;
 377                                         c[6] = c[7] = 0xffff00ff;
 378                                         c[8] = c[9] = 0xff0000ff;
 379                                         break;
 380                                 case MeterIEC2BBC:
 381                                         c[0] = c[1] = c[2] = c[3] = c[4] = c[5] = c[6] = c[7] = c[8] = c[9] =
 382                                                 UIConfiguration::instance().color ("meter color BBC");
 383                                         stp[0] = stp[1] = stp[2] = stp[3] = 115.0;
 384                                         break;
 385                                 case MeterIEC2EBU:
 386                                         stp[0] = 115.0 * meter_deflect_ppm(-24); // ignored
 387                                         stp[1] = 115.0 * meter_deflect_ppm(-18);
 388                                         stp[2] = 115.0 * meter_deflect_ppm( -9);
 389                                         stp[3] = 115.0 * meter_deflect_ppm(  0); // ignored
 390                                         c[3] = c[2] = c[1];
 391                                         c[6] = c[7] = c[8] = c[9];
 392                                         break;
 393                                 case MeterIEC1NOR:
 394                                         stp[0] = 115.0 * meter_deflect_nordic(-30); // ignored
 395                                         stp[1] = 115.0 * meter_deflect_nordic(-18);
 396                                         stp[2] = 115.0 * meter_deflect_nordic(-12);
 397                                         stp[3] = 115.0 * meter_deflect_nordic( -9); // ignored
 398                                         c[0] = c[1] = c[2]; // bright-green
 399                                         c[6] = c[7] = c[8] = c[9];
 400                                         break;
 401                                 case MeterIEC1DIN:
 402                                         stp[0] = 115.0 * meter_deflect_din(-29); // ignored
 403                                         stp[1] = 115.0 * meter_deflect_din(-18);
 404                                         stp[2] = 115.0 * meter_deflect_din(-15); // ignored
 405                                         stp[3] = 115.0 * meter_deflect_din( -9);
 406                                         c[0] = c[2] = c[3] = c[1];
 407                                         c[4] = c[6];
 408                                         c[5] = c[7];
 409                                         break;
 410                                 case MeterVU:
 411                                         stp[0] = 115.0 * meter_deflect_vu(-26); // -6
 412                                         stp[1] = 115.0 * meter_deflect_vu(-23); // -3
 413                                         stp[2] = 115.0 * meter_deflect_vu(-20); // 0
 414                                         stp[3] = 115.0 * meter_deflect_vu(-18); // +2
 415                                         c[0] = c[2] = c[3] = c[4] = c[5] = c[1];
 416                                         c[7] = c[8] = c[9] = c[6];
 417                                         break;
 418                                 case MeterPeak0dB:
 419                                          stp[1] =  89.125; // 115.0 * log_meter0dB(-9);
 420                                          stp[2] = 106.375; // 115.0 * log_meter0dB(-3);
 421                                          stp[3] = 115.0;   // 115.0 * log_meter0dB(0);
 422                                         switch (UIConfiguration::instance().get_meter_line_up_level()) {
 423                                         case MeteringLineUp24:
 424                                                 stp[0] = 115.0 * log_meter0dB(-24);
 425                                                 break;
 426                                         case MeteringLineUp20:
 427                                                 stp[0] = 115.0 * log_meter0dB(-20);
 428                                                 break;
 429                                         default:
 430                                         case MeteringLineUp18:
 431                                                 stp[0] = 115.0 * log_meter0dB(-18);
 432                                                 break;
 433                                         case MeteringLineUp15:
 434                                                 stp[0] = 115.0 * log_meter0dB(-15);
 435                                         }
 436                                         break;
 437                                 default: // PEAK, RMS
 438                                         stp[1] = 77.5;  // 115 * log_meter(-9)
 439                                         stp[2] = 92.5;  // 115 * log_meter(-3)
 440                                         stp[3] = 100.0; // 115 * log_meter(0)
 441                                         switch (UIConfiguration::instance().get_meter_line_up_level()) {
 442                                         case MeteringLineUp24:
 443                                                 stp[0] = 42.0;
 444                                                 break;
 445                                         case MeteringLineUp20:
 446                                                 stp[0] = 50.0;
 447                                                 break;
 448                                         default:
 449                                         case MeteringLineUp18:
 450                                                 stp[0] = 55.0;
 451                                                 break;
 452                                         case MeteringLineUp15:
 453                                                 stp[0] = 62.5;
 454                                                 break;
 455                                 }
 456                         }
 457                 }
 458                 if (meters[n].width != width || meters[n].length != len || color_changed || meter_type != visible_meter_type || nmidi != midi_count) {
 459                         bool hl = meters[n].meter ? meters[n].meter->get_highlight() : false;
 460                         meters[n].packed = false;
 461                         delete meters[n].meter;
 462                         meters[n].meter = new FastMeter ((uint32_t) floor (UIConfiguration::instance().get_meter_hold()), width, _meter_orientation, len,
 463                                         c[0], c[1], c[2], c[3], c[4],
 464                                         c[5], c[6], c[7], c[8], c[9],
 465                                         b[0], b[1], b[2], b[3],
 466                                         stp[0], stp[1], stp[2], stp[3],
 467                                         styleflags
 468                                         );
 469                         meters[n].meter->set_highlight(hl);
 470                         meters[n].width = width;
 471                         meters[n].length = len;
 472                         meters[n].meter->add_events (Gdk::BUTTON_PRESS_MASK | Gdk::BUTTON_RELEASE_MASK);
 473                         meters[n].meter->signal_button_press_event().connect (sigc::mem_fun (*this, &LevelMeterBase::meter_button_press), false);
 474                         meters[n].meter->signal_button_release_event().connect (sigc::mem_fun (*this, &LevelMeterBase::meter_button_release), false);
 475                 }
 476
 477                 //pack_end (*meters[n].meter, false, false);
 478                 mtr_pack (*meters[n].meter);
 479                 meters[n].packed = true;
 480                 if (max_visible_meters == 0 || (uint32_t) n < max_visible_meters + nmidi) {
 481                         meters[n].meter->show_all ();
 482                 } else {
 483                         meters[n].meter->hide ();
 484                 }
 485         }
 486         //show();
 487         color_changed = false;
 488         visible_meter_type = meter_type;
 489         midi_count = nmidi;
 490         meter_count = nmeters;
 491 }
 492
 493 bool
 494 LevelMeterBase::meter_button_press (GdkEventButton* ev)
 495 {
 496         return static_cast<bool>(ButtonPress (ev)); /* EMIT SIGNAL */
 497 }
 498
 499 bool
 500 LevelMeterBase::meter_button_release (GdkEventButton* ev)
 501 {
 502         if (ev->button == 1) {
 503                 clear_meters (false);
 504         }
 505         ButtonRelease(ev);
 506
 507         return true;
 508 }
 509
 510
 511 void LevelMeterBase::clear_meters (bool reset_highlight)
 512 {
 513         for (vector<MeterInfo>::iterator i = meters.begin(); i < meters.end(); i++) {
 514                 (*i).meter->clear();
 515                 (*i).max_peak = minus_infinity();
 516                 if (reset_highlight)
 517                         (*i).meter->set_highlight(false);
 518         }
 519         max_peak = minus_infinity();
 520 }
 521
 522 void LevelMeterBase::hide_meters ()
 523 {
 524         hide_all_meters();
 525 }
 526
 527 void
 528 LevelMeterBase::color_handler ()
 529 {
 530         color_changed = true;
 531         setup_meters (meter_length, regular_meter_width, thin_meter_width);
 532 }
 533
 534 LevelMeterHBox::LevelMeterHBox(Session* s)
 535         : LevelMeterBase(s, invalidator(*this))
 536 {
 537         set_spacing(1);
 538         show();
 539 }
 540
 541
 542 LevelMeterHBox::~LevelMeterHBox() {}
 543
 544 void
 545 LevelMeterHBox::mtr_pack(Gtk::Widget &w) {
 546         pack_end (w, false, false);
 547 }
 548
 549 void
 550 LevelMeterHBox::mtr_remove(Gtk::Widget &w) {
 551         remove (w);
 552 }
 553
 554
 555 LevelMeterVBox::LevelMeterVBox(Session* s)
 556         : LevelMeterBase(s, invalidator(*this), FastMeter::Horizontal)
 557 {
 558         set_spacing(1);
 559         show();
 560 }
 561 LevelMeterVBox::~LevelMeterVBox() {}
 562
 563 void
 564 LevelMeterVBox::mtr_pack(Gtk::Widget &w) {
 565         pack_end (w, false, false);
 566 }
 567
 568 void
 569 LevelMeterVBox::mtr_remove(Gtk::Widget &w) {
 570         remove (w);
 571 }