gtk2_ardour/latency_gui.cc

   1 #define __STDC_FORMAT_MACROS 1
   2 #include <inttypes.h>
   3
   4 #include <iomanip>
   5 #include "ardour/latent.h"
   6 #include <gtkmm2ext/utils.h>
   7
   8 #include "latency_gui.h"
   9
  10 #include "i18n.h"
  11
  12 using namespace PBD;
  13 using namespace Gtk;
  14 using namespace Gtkmm2ext;
  15 using namespace ARDOUR;
  16
  17
  18 static const gchar *_unit_strings[] = {
  19         N_("sample"),
  20         N_("msec"),
  21         N_("period"),
  22         0
  23 };
  24
  25 std::vector<std::string> LatencyGUI::unit_strings;
  26
  27 std::string
  28 LatencyBarController::get_label (int&)
  29 {
  30         double const nframes = _latency_gui->adjustment.get_value();
  31         std::stringstream s;
  32
  33         if (nframes < (_latency_gui->sample_rate / 1000.0)) {
  34                 s << ((nframes64_t) rint (nframes)) << " samples";
  35         } else {
  36                 s << std::fixed << std::setprecision (2) << (nframes / (_latency_gui->sample_rate / 1000.0)) << " msecs";
  37         }
  38
  39         return s.str ();
  40 }
  41
  42 LatencyGUI::LatencyGUI (Latent& l, nframes64_t sr, nframes64_t psz)
  43         : _latent (l),
  44           initial_value (_latent.signal_latency()),
  45           sample_rate (sr),
  46           period_size (psz),
  47           ignored (new PBD::IgnorableControllable()),
  48           /* max 1 second, step by frames, page by msecs */
  49           adjustment (initial_value, 0.0, sample_rate, 1.0, sample_rate / 1000.0f),
  50           bc (adjustment, this),
  51           reset_button (_("Reset"))
  52 {
  53         Widget* w;
  54
  55         if (unit_strings.empty()) {
  56                 unit_strings = I18N (_unit_strings);
  57         }
  58
  59         set_popdown_strings (units_combo, unit_strings);
  60         units_combo.set_active_text (unit_strings.front());
  61
  62         w = manage (new Image (Stock::ADD, ICON_SIZE_BUTTON));
  63         w->show ();
  64         plus_button.add (*w);
  65         w = manage (new Image (Stock::REMOVE, ICON_SIZE_BUTTON));
  66         w->show ();
  67         minus_button.add (*w);
  68
  69         hbox1.pack_start (bc, true, true);
  70
  71         hbox2.set_homogeneous (false);
  72         hbox2.set_spacing (12);
  73         hbox2.pack_start (reset_button);
  74         hbox2.pack_start (minus_button);
  75         hbox2.pack_start (plus_button);
  76         hbox2.pack_start (units_combo, true, true);
  77
  78         minus_button.signal_clicked().connect (sigc::bind (sigc::mem_fun (*this, &LatencyGUI::change_latency_from_button), -1));
  79         plus_button.signal_clicked().connect (sigc::bind (sigc::mem_fun (*this, &LatencyGUI::change_latency_from_button), 1));
  80         reset_button.signal_clicked().connect (sigc::mem_fun (*this, &LatencyGUI::reset));
  81
  82         adjustment.signal_value_changed().connect (sigc::mem_fun (*this, &LatencyGUI::finish));
  83
  84         bc.set_size_request (-1, 25);
  85         bc.set_style (BarController::LeftToRight);
  86         bc.set_use_parent (true);
  87         bc.set_name (X_("PluginSlider"));
  88
  89         set_spacing (12);
  90         pack_start (hbox1, true, true);
  91         pack_start (hbox2, true, true);
  92 }
  93
  94 void
  95 LatencyGUI::finish ()
  96 {
  97         nframes64_t new_value = (nframes64_t) adjustment.get_value();
  98         if (new_value != initial_value) {
  99                 _latent.set_user_latency (new_value);
 100         }
 101 }
 102
 103 void
 104 LatencyGUI::reset ()
 105 {
 106         _latent.set_user_latency (0);
 107         adjustment.set_value (initial_value);
 108 }
 109
 110 void
 111 LatencyGUI::refresh ()
 112 {
 113         initial_value = _latent.signal_latency();
 114         adjustment.set_value (initial_value);
 115 }
 116
 117 void
 118 LatencyGUI::change_latency_from_button (int dir)
 119 {
 120         Glib::ustring unitstr = units_combo.get_active_text();
 121         double shift = 0.0;
 122
 123         if (unitstr == unit_strings[0]) {
 124                 shift = 1;
 125         } else if (unitstr == unit_strings[1]) {
 126                 shift = (sample_rate / 1000.0);
 127         } else if (unitstr == unit_strings[2]) {
 128                 shift = period_size;
 129         } else {
 130                 fatal << string_compose (_("programming error: %1 (%2)"), X_("illegal string in latency GUI units combo"), unitstr)
 131                       << endmsg;
 132                 /*NOTREACHED*/
 133         }
 134
 135         if (dir > 0) {
 136                 adjustment.set_value (adjustment.get_value() + shift);
 137         } else {
 138                 adjustment.set_value (adjustment.get_value() - shift);
 139         }
 140 }
 141
 142 LatencyDialog::LatencyDialog (const Glib::ustring& title, Latent& l, nframes64_t sr, nframes64_t psz)
 143         : ArdourDialog (title, false, true),
 144           lwidget (l, sr, psz)
 145 {
 146
 147         get_vbox()->pack_start (lwidget);
 148         add_button (Stock::CANCEL, RESPONSE_CANCEL);
 149         add_button (Stock::APPLY, RESPONSE_REJECT);
 150         add_button (Stock::OK, RESPONSE_ACCEPT);
 151
 152         show_all ();
 153
 154         while (true) {
 155                 int ret = run ();
 156
 157                 switch (ret) {
 158                 case RESPONSE_ACCEPT:
 159                         return;
 160                         break;
 161
 162                 case RESPONSE_REJECT:
 163                         lwidget.finish ();
 164                         break;
 165                 default:
 166                         return;
 167                 }
 168         }
 169 }
 170
 171