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/meter.h"
  23
  24 #include <gtkmm2ext/utils.h>
  25 #include <gtkmm2ext/fastmeter.h>
  26 #include <gtkmm2ext/barcontroller.h>
  27 #include "midi++/manager.h"
  28 #include "pbd/fastlog.h"
  29
  30 #include "ardour_ui.h"
  31 #include "global_signals.h"
  32 #include "level_meter.h"
  33 #include "utils.h"
  34 #include "logmeter.h"
  35 #include "gui_thread.h"
  36 #include "keyboard.h"
  37 #include "public_editor.h"
  38
  39 #include "i18n.h"
  40
  41 using namespace ARDOUR;
  42 using namespace PBD;
  43 using namespace Gtkmm2ext;
  44 using namespace Gtk;
  45 using namespace std;
  46
  47 LevelMeter::LevelMeter (Session* s)
  48         : _meter (0)
  49         , meter_length (0)
  50         , thin_meter_width(2)
  51 {
  52         set_session (s);
  53         set_spacing (1);
  54         Config->ParameterChanged.connect (_parameter_connection, invalidator (*this), boost::bind (&LevelMeter::parameter_changed, this, _1), gui_context());
  55         UI::instance()->theme_changed.connect (sigc::mem_fun(*this, &LevelMeter::on_theme_changed));
  56         ColorsChanged.connect (sigc::mem_fun (*this, &LevelMeter::color_handler));
  57         max_peak = minus_infinity();
  58         meter_type = MeterPeak;
  59 }
  60
  61 void
  62 LevelMeter::on_theme_changed()
  63 {
  64         style_changed = true;
  65 }
  66
  67 LevelMeter::~LevelMeter ()
  68 {
  69         for (vector<MeterInfo>::iterator i = meters.begin(); i != meters.end(); i++) {
  70                 delete (*i).meter;
  71         }
  72 }
  73
  74 void
  75 LevelMeter::set_meter (PeakMeter* meter)
  76 {
  77         _configuration_connection.disconnect();
  78         _meter_type_connection.disconnect();
  79
  80         _meter = meter;
  81
  82         if (_meter) {
  83                 _meter->ConfigurationChanged.connect (_configuration_connection, invalidator (*this), boost::bind (&LevelMeter::configuration_changed, this, _1, _2), gui_context());
  84                 _meter->TypeChanged.connect (_meter_type_connection, invalidator (*this), boost::bind (&LevelMeter::meter_type_changed, this, _1), gui_context());
  85         }
  86 }
  87
  88 static float meter_lineup(float offset) {
  89         switch (Config->get_meter_line_up_level()) {
  90                 case MeteringLineUp24:
  91                         return offset + 6.0;
  92                 case MeteringLineUp20:
  93                         return offset + 2.0;
  94                 case MeteringLineUp18:
  95                         return offset;
  96                 case MeteringLineUp15:
  97                         return offset - 3.0;
  98                 default:
  99                         break;
 100         }
 101         return offset;
 102 }
 103
 104 static float vu_standard() {
 105         // note - default meter config is +2dB (france)
 106         switch (Config->get_meter_vu_standard()) {
 107                 default:
 108                 case MeteringVUfrench:   // 0VU = -2dBu
 109                         return 0;
 110                 case MeteringVUamerican: // 0VU =  0dBu
 111                         return -2;
 112                 case MeteringVUstandard: // 0VU = +4dBu
 113                         return -6;
 114                 case MeteringVUeight:    // 0VU = +8dBu
 115                         return -10;
 116         }
 117 }
 118
 119 float
 120 LevelMeter::update_meters ()
 121 {
 122         vector<MeterInfo>::iterator i;
 123         uint32_t n;
 124
 125         if (!_meter) {
 126                 return 0.0f;
 127         }
 128
 129         uint32_t nmidi = _meter->input_streams().n_midi();
 130
 131         for (n = 0, i = meters.begin(); i != meters.end(); ++i, ++n) {
 132                 if ((*i).packed) {
 133                         const float mpeak = _meter->meter_level(n, MeterMaxPeak);
 134                         if (mpeak > (*i).max_peak) {
 135                                 (*i).max_peak = mpeak;
 136                                 (*i).meter->set_highlight(mpeak > Config->get_meter_peak());
 137                         }
 138                         if (mpeak > max_peak) {
 139                                 max_peak = mpeak;
 140                         }
 141
 142                         if (n < nmidi) {
 143                                 (*i).meter->set (_meter->meter_level (n, MeterPeak));
 144                         } else {
 145                                 const float peak = _meter->meter_level (n, meter_type);
 146                                 if (meter_type == MeterPeak) {
 147                                         (*i).meter->set (log_meter (peak));
 148                                 } else if (meter_type == MeterIEC1NOR) {
 149                                         (*i).meter->set (meter_deflect_nordic (peak + meter_lineup(0)));
 150                                 } else if (meter_type == MeterIEC1DIN) {
 151                                         (*i).meter->set (meter_deflect_din (peak + meter_lineup(3.0)));
 152                                 } else if (meter_type == MeterIEC2BBC || meter_type == MeterIEC2EBU) {
 153                                         (*i).meter->set (meter_deflect_ppm (peak + meter_lineup(0)));
 154                                 } else if (meter_type == MeterVU) {
 155                                         (*i).meter->set (meter_deflect_vu (peak + vu_standard() + meter_lineup(0)));
 156                                 } else if (meter_type == MeterK14) {
 157                                         (*i).meter->set (meter_deflect_k (peak, 14), meter_deflect_k(_meter->meter_level(n, MeterPeak), 14));
 158                                 } else if (meter_type == MeterK20) {
 159                                         (*i).meter->set (meter_deflect_k (peak, 20), meter_deflect_k(_meter->meter_level(n, MeterPeak), 20));
 160                                 } else { // RMS
 161                                         (*i).meter->set (log_meter (peak), log_meter(_meter->meter_level(n, MeterPeak)));
 162                                 }
 163                         }
 164                 }
 165         }
 166         return max_peak;
 167 }
 168
 169 void
 170 LevelMeter::parameter_changed (string p)
 171 {
 172         ENSURE_GUI_THREAD (*this, &LevelMeter::parameter_changed, p)
 173
 174         if (p == "meter-hold") {
 175                 vector<MeterInfo>::iterator i;
 176                 uint32_t n;
 177
 178                 for (n = 0, i = meters.begin(); i != meters.end(); ++i, ++n) {
 179                         (*i).meter->set_hold_count ((uint32_t) floor(Config->get_meter_hold()));
 180                 }
 181         }
 182         else if (p == "meter-line-up-level") {
 183                 color_changed = true;
 184                 setup_meters (meter_length, regular_meter_width, thin_meter_width);
 185         }
 186         else if (p == "meter-peak") {
 187                 vector<MeterInfo>::iterator i;
 188                 uint32_t n;
 189
 190                 for (n = 0, i = meters.begin(); i != meters.end(); ++i, ++n) {
 191                         (*i).max_peak = minus_infinity();
 192                 }
 193         }
 194 }
 195
 196 void
 197 LevelMeter::configuration_changed (ChanCount /*in*/, ChanCount /*out*/)
 198 {
 199         color_changed = true;
 200         setup_meters (meter_length, regular_meter_width, thin_meter_width);
 201 }
 202
 203 void
 204 LevelMeter::meter_type_changed (MeterType t)
 205 {
 206         meter_type = t;
 207         color_changed = true;
 208         setup_meters (meter_length, regular_meter_width, thin_meter_width);
 209         MeterTypeChanged(t);
 210 }
 211
 212 void
 213 LevelMeter::hide_all_meters ()
 214 {
 215         for (vector<MeterInfo>::iterator i = meters.begin(); i != meters.end(); ++i) {
 216                 if ((*i).packed) {
 217                         remove (*((*i).meter));
 218                         (*i).packed = false;
 219                 }
 220         }
 221 }
 222
 223 void
 224 LevelMeter::setup_meters (int len, int initial_width, int thin_width)
 225 {
 226         hide_all_meters ();
 227
 228         if (!_meter) {
 229                 return; /* do it later or never */
 230         }
 231
 232         int32_t nmidi = _meter->input_streams().n_midi();
 233         uint32_t nmeters = _meter->input_streams().n_total();
 234         regular_meter_width = initial_width;
 235         thin_meter_width = thin_width;
 236         meter_length = len;
 237
 238         guint16 width;
 239
 240         if (nmeters == 0) {
 241                 return;
 242         }
 243
 244         if (nmeters <= 2) {
 245                 width = regular_meter_width;
 246         } else {
 247                 width = thin_meter_width;
 248         }
 249
 250         while (meters.size() < nmeters) {
 251                 meters.push_back (MeterInfo());
 252         }
 253
 254         //cerr << "LevelMeter::setup_meters() called color_changed = " << color_changed << " colors: " << endl;//DEBUG
 255
 256         for (int32_t n = nmeters-1; nmeters && n >= 0 ; --n) {
 257                 uint32_t c[10];
 258                 float stp[4];
 259                 if (n < nmidi) {
 260                         c[0] = ARDOUR_UI::config()->get_canvasvar_MidiMeterColor0();
 261                         c[1] = ARDOUR_UI::config()->get_canvasvar_MidiMeterColor1();
 262                         c[2] = ARDOUR_UI::config()->get_canvasvar_MidiMeterColor2();
 263                         c[3] = ARDOUR_UI::config()->get_canvasvar_MidiMeterColor3();
 264                         c[4] = ARDOUR_UI::config()->get_canvasvar_MidiMeterColor4();
 265                         c[5] = ARDOUR_UI::config()->get_canvasvar_MidiMeterColor5();
 266                         c[6] = ARDOUR_UI::config()->get_canvasvar_MidiMeterColor6();
 267                         c[7] = ARDOUR_UI::config()->get_canvasvar_MidiMeterColor7();
 268                         c[8] = ARDOUR_UI::config()->get_canvasvar_MidiMeterColor8();
 269                         c[9] = ARDOUR_UI::config()->get_canvasvar_MidiMeterColor9();
 270                         stp[0] = 115.0 *  32.0 / 128.0;
 271                         stp[1] = 115.0 *  64.0 / 128.0;
 272                         stp[2] = 115.0 * 100.0 / 128.0;
 273                         stp[3] = 115.0 * 112.0 / 128.0;
 274                 } else {
 275                         c[0] = ARDOUR_UI::config()->get_canvasvar_MeterColor0();
 276                         c[1] = ARDOUR_UI::config()->get_canvasvar_MeterColor1();
 277                         c[2] = ARDOUR_UI::config()->get_canvasvar_MeterColor2();
 278                         c[3] = ARDOUR_UI::config()->get_canvasvar_MeterColor3();
 279                         c[4] = ARDOUR_UI::config()->get_canvasvar_MeterColor4();
 280                         c[5] = ARDOUR_UI::config()->get_canvasvar_MeterColor5();
 281                         c[6] = ARDOUR_UI::config()->get_canvasvar_MeterColor6();
 282                         c[7] = ARDOUR_UI::config()->get_canvasvar_MeterColor7();
 283                         c[8] = ARDOUR_UI::config()->get_canvasvar_MeterColor8();
 284                         c[9] = ARDOUR_UI::config()->get_canvasvar_MeterColor9();
 285
 286                         switch (meter_type) {
 287                                 case MeterK20:
 288                                         stp[0] = 115.0 * meter_deflect_k(-40, 20);  //-20
 289                                         stp[1] = 115.0 * meter_deflect_k(-20, 20);  //  0
 290                                         stp[2] = 115.0 * meter_deflect_k(-18, 20);  // +2
 291                                         stp[3] = 115.0 * meter_deflect_k(-16, 20);  // +4
 292                                         c[0] = c[1] = 0x008800ff;
 293                                         c[2] = c[3] = 0x00ff00ff;
 294                                         c[4] = c[5] = 0xffff00ff;
 295                                         c[6] = c[7] = 0xffff00ff;
 296                                         c[8] = c[9] = 0xff0000ff;
 297                                         break;
 298                                 case MeterK14:
 299                                         stp[0] = 115.0 * meter_deflect_k(-34, 14);  //-20
 300                                         stp[1] = 115.0 * meter_deflect_k(-14, 14);  //  0
 301                                         stp[2] = 115.0 * meter_deflect_k(-12, 14);  // +2
 302                                         stp[3] = 115.0 * meter_deflect_k(-10, 14);  // +4
 303                                         c[0] = c[1] = 0x008800ff;
 304                                         c[2] = c[3] = 0x00ff00ff;
 305                                         c[4] = c[5] = 0xffff00ff;
 306                                         c[6] = c[7] = 0xffff00ff;
 307                                         c[8] = c[9] = 0xff0000ff;
 308                                         break;
 309                                 case MeterIEC2EBU:
 310                                 case MeterIEC2BBC:
 311                                         stp[0] = 115.0 * meter_deflect_ppm(-18);
 312                                         stp[1] = 115.0 * meter_deflect_ppm(-14);
 313                                         stp[2] = 115.0 * meter_deflect_ppm(-10);
 314                                         stp[3] = 115.0 * meter_deflect_ppm( -8);
 315                                         break;
 316                                 case MeterIEC1NOR:
 317                                         stp[0] = 115.0 * meter_deflect_nordic(-18);
 318                                         stp[1] = 115.0 * meter_deflect_nordic(-15);
 319                                         stp[2] = 115.0 * meter_deflect_nordic(-12);
 320                                         stp[3] = 115.0 * meter_deflect_nordic( -9);
 321                                         break;
 322                                 case MeterIEC1DIN:
 323                                         stp[0] = 115.0 * meter_deflect_din(-29);
 324                                         stp[1] = 115.0 * meter_deflect_din(-18);
 325                                         stp[2] = 115.0 * meter_deflect_din(-15);
 326                                         stp[3] = 115.0 * meter_deflect_din( -9);
 327                                         break;
 328                                 case MeterVU:
 329                                         stp[0] = 115.0 * meter_deflect_vu(-26); // -6
 330                                         stp[1] = 115.0 * meter_deflect_vu(-23); // -3
 331                                         stp[2] = 115.0 * meter_deflect_vu(-20); // 0
 332                                         stp[3] = 115.0 * meter_deflect_vu(-18); // +2
 333                                         break;
 334                                 default: // PEAK, RMS
 335                                         stp[1] = 77.5;  // 115 * log_meter(-10)
 336                                         stp[2] = 92.5;  // 115 * log_meter(-3)
 337                                         stp[3] = 100.0; // 115 * log_meter(0)
 338                                 switch (Config->get_meter_line_up_level()) {
 339                                         case MeteringLineUp24:
 340                                                 stp[0] = 42.0;
 341                                                 break;
 342                                         case MeteringLineUp20:
 343                                                 stp[0] = 50.0;
 344                                                 break;
 345                                         default:
 346                                         case MeteringLineUp18:
 347                                                 stp[0] = 55.0;
 348                                                 break;
 349                                         case MeteringLineUp15:
 350                                                 stp[0] = 62.5;
 351                                                 break;
 352                                 }
 353                         }
 354                 }
 355                 if (meters[n].width != width || meters[n].length != len || color_changed) {
 356                         delete meters[n].meter;
 357                         meters[n].meter = new FastMeter ((uint32_t) floor (Config->get_meter_hold()), width, FastMeter::Vertical, len,
 358                                                          c[0], c[1], c[2], c[3], c[4],
 359                                                          c[5], c[6], c[7], c[8], c[9],
 360                                                          ARDOUR_UI::config()->get_canvasvar_MeterBackgroundBot(),
 361                                                          ARDOUR_UI::config()->get_canvasvar_MeterBackgroundTop(),
 362                                                          0x991122ff, 0x551111ff,
 363                                                          stp[0], stp[1], stp[2], stp[3]
 364                                 );
 365                         meters[n].width = width;
 366                         meters[n].length = len;
 367                         meters[n].meter->add_events (Gdk::BUTTON_PRESS_MASK | Gdk::BUTTON_RELEASE_MASK);
 368                         meters[n].meter->signal_button_press_event().connect (sigc::mem_fun (*this, &LevelMeter::meter_button_press));
 369                         meters[n].meter->signal_button_release_event().connect (sigc::mem_fun (*this, &LevelMeter::meter_button_release));
 370                 }
 371
 372                 pack_end (*meters[n].meter, false, false);
 373                 meters[n].meter->show_all ();
 374                 meters[n].packed = true;
 375         }
 376         show();
 377         color_changed = false;
 378 }
 379
 380 void
 381 LevelMeter::set_type(MeterType t)
 382 {
 383         meter_type = t;
 384         _meter->set_type(t);
 385 }
 386
 387 bool
 388 LevelMeter::meter_button_press (GdkEventButton* ev)
 389 {
 390         return ButtonPress (ev); /* EMIT SIGNAL */
 391 }
 392
 393 bool
 394 LevelMeter::meter_button_release (GdkEventButton* ev)
 395 {
 396         if (ev->button == 1) {
 397                 clear_meters (false);
 398         }
 399
 400         return true;
 401 }
 402
 403
 404 void LevelMeter::clear_meters (bool reset_highlight)
 405 {
 406         for (vector<MeterInfo>::iterator i = meters.begin(); i < meters.end(); i++) {
 407                 (*i).meter->clear();
 408                 (*i).max_peak = minus_infinity();
 409                 if (reset_highlight)
 410                         (*i).meter->set_highlight(false);
 411         }
 412         max_peak = minus_infinity();
 413 }
 414
 415 void LevelMeter::hide_meters ()
 416 {
 417         hide_all_meters();
 418 }
 419
 420 void
 421 LevelMeter::color_handler ()
 422 {
 423         color_changed = true;
 424 }
 425