Suppress application volume when alt-tabbed (#730)

* Suppress application volume when alt-tabbed
Add a "suppress_audio" slider setting, 50% by default, which decides how much audio remains when the client is not in focus
Add a "muted" setting for blip, music, and sfx players
Add update_audio_volume func

* change "suppress" to "how much audio is suppressed" instead of "how much audio remains"

* Fix last commit just flipping the behavior and being ultra wacky

* Fix evidence present sound ignoring audio suppression settings

Co-authored-by: stonedDiscord <Tukz@gmx.de>
Co-authored-by: Salanto <62221668+Salanto@users.noreply.github.com>

6 files changed, 100 insertions, 29 deletions

diff --git a/src/aoblipplayer.cpp b/src/aoblipplayer.cpp
index 307a0bdd..5dc24678 100644
--- a/src/aoblipplayer.cpp
+++ b/src/aoblipplayer.cpp
@@ -37,6 +37,12 @@ void AOBlipPlayer::blip_tick()
   BASS_ChannelPlay(f_stream, false);
 }
 
+void AOBlipPlayer::set_muted(bool toggle)
+{
+  m_muted = toggle;
+  set_volume_internal(m_volume);
+}
+
 void AOBlipPlayer::set_volume(int p_value)
 {
   m_volume = static_cast<qreal>(p_value) / 100;
@@ -45,7 +51,8 @@ void AOBlipPlayer::set_volume(int p_value)
 
 void AOBlipPlayer::set_volume_internal(qreal p_value)
 {
-  float volume = static_cast<float>(p_value);
+  // If muted, volume will always be 0
+  float volume = static_cast<float>(p_value) * !m_muted;
 
   for (int n_stream = 0; n_stream < 5; ++n_stream) {
     BASS_ChannelSetAttribute(m_stream_list[n_stream], BASS_ATTRIB_VOL, volume);
diff --git a/src/aomusicplayer.cpp b/src/aomusicplayer.cpp
index 16db1630..59cf4d23 100644
--- a/src/aomusicplayer.cpp
+++ b/src/aomusicplayer.cpp
@@ -159,10 +159,20 @@ void AOMusicPlayer::stop(int channel)
   BASS_ChannelStop(m_stream_list[channel]);
 }
 
+void AOMusicPlayer::set_muted(bool toggle)
+{
+  m_muted = toggle;
+  // Update all volume based on the mute setting
+  for (int n_stream = 0; n_stream < m_channelmax; ++n_stream) {
+    set_volume(m_volume[n_stream], n_stream);
+  }
+}
+
 void AOMusicPlayer::set_volume(int p_value, int channel)
 {
   m_volume[channel] = p_value;
-  float volume = m_volume[channel] / 100.0f;
+  // If muted, volume will always be 0
+  float volume = (m_volume[channel] / 100.0f) * !m_muted;
   if (channel < 0) {
     for (int n_stream = 0; n_stream < m_channelmax; ++n_stream) {
       BASS_ChannelSetAttribute(m_stream_list[n_stream], BASS_ATTRIB_VOL,
diff --git a/src/aooptionsdialog.cpp b/src/aooptionsdialog.cpp
index 759d49d4..c0ac7c5f 100644
--- a/src/aooptionsdialog.cpp
+++ b/src/aooptionsdialog.cpp
@@ -596,6 +596,21 @@ AOOptionsDialog::AOOptionsDialog(QWidget *parent, AOApplication *p_ao_app)
                              ui_blips_volume_spinbox);
 
   row += 1;
+  ui_suppress_audio_lbl = new QLabel(ui_audio_widget);
+  ui_suppress_audio_lbl->setText(tr("Suppress Audio:"));
+  ui_suppress_audio_lbl->setToolTip(
+      tr("How much of the volume to suppress when client is not in focus."));
+
+  ui_audio_layout->setWidget(row, QFormLayout::LabelRole, ui_suppress_audio_lbl);
+
+  ui_suppress_audio_spinbox = new QSpinBox(ui_audio_widget);
+  ui_suppress_audio_spinbox->setMaximum(100);
+  ui_suppress_audio_spinbox->setSuffix("%");
+
+  ui_audio_layout->setWidget(row, QFormLayout::FieldRole,
+                             ui_suppress_audio_spinbox);
+
+  row += 1;
   ui_volume_blip_divider = new QFrame(ui_audio_widget);
   ui_volume_blip_divider->setFrameShape(QFrame::HLine);
   ui_volume_blip_divider->setFrameShadow(QFrame::Sunken);
@@ -1192,6 +1207,7 @@ void AOOptionsDialog::update_values() {
   ui_music_volume_spinbox->setValue(ao_app->get_default_music());
   ui_sfx_volume_spinbox->setValue(ao_app->get_default_sfx());
   ui_blips_volume_spinbox->setValue(ao_app->get_default_blip());
+  ui_suppress_audio_spinbox->setValue(ao_app->get_default_suppress_audio());
   ui_bliprate_spinbox->setValue(ao_app->read_blip_rate());
   ui_default_showname_textbox->setText(ao_app->get_default_showname());
 
@@ -1272,6 +1288,7 @@ void AOOptionsDialog::save_pressed()
   configini->setValue("default_music", ui_music_volume_spinbox->value());
   configini->setValue("default_sfx", ui_sfx_volume_spinbox->value());
   configini->setValue("default_blip", ui_blips_volume_spinbox->value());
+  configini->setValue("suppress_audio", ui_suppress_audio_spinbox->value());
   configini->setValue("blip_rate", ui_bliprate_spinbox->value());
   configini->setValue("blank_blip", ui_blank_blips_cb->isChecked());
   configini->setValue("looping_sfx", ui_loopsfx_cb->isChecked());
diff --git a/src/aosfxplayer.cpp b/src/aosfxplayer.cpp
index fcdeb949..8d88667c 100644
--- a/src/aosfxplayer.cpp
+++ b/src/aosfxplayer.cpp
@@ -60,15 +60,23 @@ void AOSfxPlayer::stop(int channel)
   BASS_ChannelStop(m_stream_list[channel]);
 }
 
+void AOSfxPlayer::set_muted(bool toggle)
+{
+  m_muted = toggle;
+  // Update the audio volume
+  set_volume_internal(m_volume);
+}
+
 void AOSfxPlayer::set_volume(qreal p_value)
 {
-  m_volume = p_value / 100;
+  m_volume = p_value * 0.01;
   set_volume_internal(m_volume);
 }
 
 void AOSfxPlayer::set_volume_internal(qreal p_value)
 {
-  float volume = static_cast<float>(p_value);
+  // If muted, volume will always be 0
+  float volume = static_cast<float>(p_value) * !m_muted;
   for (int n_stream = 0; n_stream < m_channelmax; ++n_stream) {
     BASS_ChannelSetAttribute(m_stream_list[n_stream], BASS_ATTRIB_VOL, volume);
   }
diff --git a/src/courtroom.cpp b/src/courtroom.cpp
index 30d226e1..e76ba414 100644
--- a/src/courtroom.cpp
+++ b/src/courtroom.cpp
@@ -26,18 +26,18 @@ Courtroom::Courtroom(AOApplication *p_ao_app) : QMainWindow()
   sfx_delay_timer->setSingleShot(true);
 
   music_player = new AOMusicPlayer(this, ao_app);
-  music_player->set_volume(0);
+  music_player->set_muted(true);
   connect(&music_player->music_watcher, &QFutureWatcher<QString>::finished,
           this, &Courtroom::update_ui_music_name, Qt::QueuedConnection);
 
   sfx_player = new AOSfxPlayer(this, ao_app);
-  sfx_player->set_volume(0);
+  sfx_player->set_muted(true);
 
   objection_player = new AOSfxPlayer(this, ao_app);
-  objection_player->set_volume(0);
+  objection_player->set_muted(true);
 
   blip_player = new AOBlipPlayer(this, ao_app);
-  blip_player->set_volume(0);
+  blip_player->set_muted(true);
 
   modcall_player = new AOSfxPlayer(this, ao_app);
   modcall_player->set_volume(50);
@@ -555,6 +555,9 @@ Courtroom::Courtroom(AOApplication *p_ao_app) : QMainWindow()
   connect(ui_evidence_button, &AOButton::clicked, this,
           &Courtroom::on_evidence_button_clicked);
 
+  connect(qApp, QOverload<Qt::ApplicationState>::of(&QApplication::applicationStateChanged), this,
+          &Courtroom::on_application_state_changed);
+
   connect(ui_vp_evidence_display, &AOEvidenceDisplay::show_evidence_details, this, &Courtroom::show_evidence);
 
   set_widgets();
@@ -562,6 +565,35 @@ Courtroom::Courtroom(AOApplication *p_ao_app) : QMainWindow()
   set_char_select();
 }
 
+void Courtroom::on_application_state_changed(Qt::ApplicationState state)
+{
+  // Unsuppressed
+  suppress_audio = 0;
+  if (state != Qt::ApplicationActive) {
+    // Suppressed audio setting
+    suppress_audio = ao_app->get_default_suppress_audio();
+  }
+  update_audio_volume();
+}
+
+void Courtroom::update_audio_volume()
+{
+  float remaining_percent = 1.0f - static_cast<float>(suppress_audio / 100.0f);
+  if (remaining_percent > 1)
+    remaining_percent = 1;
+  if (remaining_percent < 0)
+    remaining_percent = 0;
+
+  music_player->set_volume(ui_music_slider->value() * remaining_percent, 0); // set music
+  // Set the ambience and other misc. music layers
+  for (int i = 1; i < music_player->m_channelmax; ++i) {
+    music_player->set_volume(ui_sfx_slider->value() * remaining_percent, i);
+  }
+  sfx_player->set_volume(ui_sfx_slider->value() * remaining_percent);
+  objection_player->set_volume(ui_sfx_slider->value() * remaining_percent);
+  blip_player->set_volume(ui_blip_slider->value() * remaining_percent);
+}
+
 void Courtroom::set_courtroom_size()
 {
   QString filename = "courtroom_design.ini";
@@ -1282,11 +1314,6 @@ void Courtroom::done_received()
 {
   m_cid = -1;
 
-  music_player->set_volume(0);
-  sfx_player->set_volume(0);
-  objection_player->set_volume(0);
-  blip_player->set_volume(0);
-
   if (char_list.size() > 0)
   {
     set_char_select();
@@ -1543,11 +1570,7 @@ void Courtroom::update_character(int p_cid)
   ui_char_select_background->hide();
   ui_ic_chat_message->setEnabled(m_cid != -1);
   ui_ic_chat_message->setFocus();
-  // have to call these to make sure music, sfx, and blips don't get accidentally muted forever when we change characters
-  music_player->set_volume(ui_music_slider->value(), 0);
-  objection_player->set_volume(ui_sfx_slider->value());
-  sfx_player->set_volume(ui_sfx_slider->value());
-  blip_player->set_volume(ui_blip_slider->value());
+  update_audio_volume();
 }
 
 void Courtroom::enter_courtroom()
@@ -1594,14 +1617,14 @@ void Courtroom::enter_courtroom()
     break;
   }
 
-  music_player->set_volume(ui_music_slider->value(), 0); // set music
-  // Set the ambience and other misc. music layers
-  for (int i = 1; i < music_player->m_channelmax; ++i) {
-    music_player->set_volume(ui_sfx_slider->value(), i);
-  }
-  sfx_player->set_volume(ui_sfx_slider->value());
-  objection_player->set_volume(ui_sfx_slider->value());
-  blip_player->set_volume(ui_blip_slider->value());
+  // Unmute everything
+  music_player->set_muted(false);
+  objection_player->set_muted(false);
+  sfx_player->set_muted(false);
+  blip_player->set_muted(false);
+
+  // Update the audio sliders
+  update_audio_volume();
 
   ui_vp_testimony->stop();
   // ui_server_chatlog->setHtml(ui_server_chatlog->toHtml());
@@ -2902,7 +2925,7 @@ void Courtroom::display_evidence_image()
     bool is_left_side = !(side == "def" || side == "hlp" ||
                           side == "jud" || side == "jur");
     ui_vp_evidence_display->show_evidence(f_evi_id, f_image, is_left_side,
-                                          ui_sfx_slider->value());
+                                          sfx_player->get_volume());
   }
 }
 
@@ -5371,8 +5394,8 @@ void Courtroom::on_guilty_clicked()
 
 void Courtroom::on_change_character_clicked()
 {
-  sfx_player->set_volume(0);
-  blip_player->set_volume(0);
+  sfx_player->set_muted(true);
+  blip_player->set_muted(true);
 
   set_char_select();
 
diff --git a/src/text_file_functions.cpp b/src/text_file_functions.cpp
index be162b22..dc95dc34 100644
--- a/src/text_file_functions.cpp
+++ b/src/text_file_functions.cpp
@@ -40,6 +40,12 @@ int AOApplication::get_default_blip()
   return result;
 }
 
+int AOApplication::get_default_suppress_audio()
+{
+  int result = configini->value("suppress_audio", 50).toInt();
+  return result;
+}
+
 int AOApplication::get_max_log_size()
 {
   int result = configini->value("log_maximum", 200).toInt();