Add support for controlling the audio using a MIDI controller.

[nageru] / mainwindow.cpp

diff --git a/mainwindow.cpp b/mainwindow.cpp
index 9e4ad0d9e5dc4b6fa48036d6ea848bb51603145d..17209408d4668d6eb07450b83bbbcfe8c6aea2eb 100644 (file)
--- a/mainwindow.cpp
+++ b/mainwindow.cpp
@@ -25,6 +25,7 @@
 #include "glwidget.h"
 #include "input_mapping_dialog.h"
 #include "lrameter.h"
+#include "midi_mapping.pb.h"
 #include "mixer.h"
 #include "post_to_main_thread.h"
 #include "ui_audio_miniview.h"
@@ -144,7 +145,7 @@ void set_peak_label(QLabel *peak_label, float peak_db)
 }  // namespace
 
 MainWindow::MainWindow()
-       : ui(new Ui::MainWindow)
+       : ui(new Ui::MainWindow), midi_mapper(this)
 {
        global_mainwindow = this;
        ui->setupUi(this);
@@ -206,6 +207,17 @@ MainWindow::MainWindow()
        connect(new QShortcut(QKeySequence::MoveToPreviousPage, this), &QShortcut::activated, switch_page);
 
        last_audio_level_callback = steady_clock::now() - seconds(1);
+
+       if (!global_flags.midi_mapping_filename.empty()) {
+               MIDIMappingProto midi_mapping;
+               if (!load_midi_mapping_from_file(global_flags.midi_mapping_filename, &midi_mapping)) {
+                       fprintf(stderr, "Couldn't load MIDI mapping '%s'; exiting.\n",
+                               global_flags.midi_mapping_filename.c_str());
+                       exit(1);
+               }
+               midi_mapper.set_midi_mapping(midi_mapping);
+       }
+       midi_mapper.start_thread();
 }
 
 void MainWindow::resizeEvent(QResizeEvent* event)
@@ -821,6 +833,99 @@ void MainWindow::relayout()
        ui->preview_displays->setStretch(previews.size(), lrintf(remaining_preview_width));
 }
 
+void MainWindow::set_locut(float value)
+{
+       set_relative_value(ui->locut_cutoff_knob, value);
+}
+
+void MainWindow::set_limiter_threshold(float value)
+{
+       set_relative_value(ui->limiter_threshold_knob, value);
+}
+
+void MainWindow::set_makeup_gain(float value)
+{
+       set_relative_value(ui->makeup_gain_knob, value);
+}
+
+void MainWindow::set_treble(unsigned bus_idx, float value)
+{
+       set_relative_value_if_exists(bus_idx, &Ui::AudioExpandedView::treble_knob, value);
+}
+
+void MainWindow::set_mid(unsigned bus_idx, float value)
+{
+       set_relative_value_if_exists(bus_idx, &Ui::AudioExpandedView::mid_knob, value);
+}
+
+void MainWindow::set_bass(unsigned bus_idx, float value)
+{
+       set_relative_value_if_exists(bus_idx, &Ui::AudioExpandedView::bass_knob, value);
+}
+
+void MainWindow::set_gain(unsigned bus_idx, float value)
+{
+       set_relative_value_if_exists(bus_idx, &Ui::AudioExpandedView::gainstaging_knob, value);
+}
+
+void MainWindow::set_compressor_threshold(unsigned bus_idx, float value)
+{
+       set_relative_value_if_exists(bus_idx, &Ui::AudioExpandedView::compressor_threshold_knob, value);
+}
+
+void MainWindow::set_fader(unsigned bus_idx, float value)
+{
+       set_relative_value_if_exists(bus_idx, &Ui::AudioExpandedView::fader, value);
+}
+
+void MainWindow::toggle_locut(unsigned bus_idx)
+{
+       click_button_if_exists(bus_idx, &Ui::AudioExpandedView::locut_enabled);
+}
+
+void MainWindow::toggle_auto_gain_staging(unsigned bus_idx)
+{
+       click_button_if_exists(bus_idx, &Ui::AudioExpandedView::gainstaging_auto_checkbox);
+}
+
+void MainWindow::toggle_compressor(unsigned bus_idx)
+{
+       click_button_if_exists(bus_idx, &Ui::AudioExpandedView::compressor_enabled);
+}
+
+void MainWindow::clear_peak(unsigned bus_idx)
+{
+       if (global_audio_mixer->get_mapping_mode() == AudioMixer::MappingMode::MULTICHANNEL) {
+               global_audio_mixer->reset_peak(bus_idx);
+       }
+}
+
+template<class T>
+void MainWindow::set_relative_value(T *control, float value)
+{
+       post_to_main_thread([control, value]{
+               control->setValue(lrintf(control->minimum() + value * (control->maximum() - control->minimum())));
+       });
+}
+
+template<class T>
+void MainWindow::set_relative_value_if_exists(unsigned bus_idx, T *(Ui_AudioExpandedView::*control), float value)
+{
+       if (global_audio_mixer->get_mapping_mode() == AudioMixer::MappingMode::MULTICHANNEL &&
+           bus_idx < audio_expanded_views.size()) {
+               set_relative_value(audio_expanded_views[bus_idx]->*control, value);
+       }
+}
+
+template<class T>
+void MainWindow::click_button_if_exists(unsigned bus_idx, T *(Ui_AudioExpandedView::*control))
+{
+       if (global_audio_mixer->get_mapping_mode() == AudioMixer::MappingMode::MULTICHANNEL &&
+           bus_idx < audio_expanded_views.size()) {
+               (audio_expanded_views[bus_idx]->*control)->click();
+       }
+}
+
 void MainWindow::set_transition_names(vector<string> transition_names)
 {
        if (transition_names.size() < 1 || transition_names[0].empty()) {