From 6477e5fb54aa0f74894f0a3863e35fec4cdd01b0 Mon Sep 17 00:00:00 2001
From: Connor McLaughlin <stenzek@gmail.com>
Date: Sun, 10 May 2020 00:54:23 +1000
Subject: [PATCH] CommonHostInterface: Add volume up/down/mute hotkeys

---
 src/frontend-common/common_host_interface.cpp | 35 +++++++++++++++++++
 src/frontend-common/common_host_interface.h   |  1 +
 2 files changed, 36 insertions(+)

diff --git a/src/frontend-common/common_host_interface.cpp b/src/frontend-common/common_host_interface.cpp
index b27f6d20b..7ac9b0e22 100644
--- a/src/frontend-common/common_host_interface.cpp
+++ b/src/frontend-common/common_host_interface.cpp
@@ -40,6 +40,7 @@ bool CommonHostInterface::Initialize()
   RegisterGeneralHotkeys();
   RegisterGraphicsHotkeys();
   RegisterSaveStateHotkeys();
+  RegisterAudioHotkeys();
 
   m_controller_interface = CreateControllerInterface();
   if (m_controller_interface && !m_controller_interface->Initialize(this))
@@ -909,6 +910,40 @@ void CommonHostInterface::RegisterSaveStateHotkeys()
   }
 }
 
+void CommonHostInterface::RegisterAudioHotkeys()
+{
+  RegisterHotkey(StaticString("Audio"), StaticString("AudioMute"), StaticString("Toggle Mute"), [this](bool pressed) {
+    if (m_system && !pressed)
+    {
+      m_settings.audio_output_muted = !m_settings.audio_output_muted;
+      m_audio_stream->SetOutputVolume(m_settings.audio_output_muted ? 0 : m_settings.audio_output_volume);
+      if (m_settings.audio_output_muted)
+        AddOSDMessage("Volume: Muted", 2.0f);
+      else
+        AddFormattedOSDMessage(2.0f, "Volume: %d%%", m_settings.audio_output_volume);
+    }
+  });
+  RegisterHotkey(StaticString("Audio"), StaticString("AudioVolumeUp"), StaticString("Volume Up"), [this](bool pressed) {
+    if (m_system && pressed)
+    {
+      m_settings.audio_output_volume = std::min<s32>(m_settings.audio_output_volume + 10, 100);
+      m_settings.audio_output_muted = false;
+      m_audio_stream->SetOutputVolume(m_settings.audio_output_volume);
+      AddFormattedOSDMessage(2.0f, "Volume: %d%%", m_settings.audio_output_volume);
+    }
+  });
+  RegisterHotkey(StaticString("Audio"), StaticString("AudioVolumeDown"), StaticString("Volume Down"),
+                 [this](bool pressed) {
+                   if (m_system && pressed)
+                   {
+                     m_settings.audio_output_volume = std::max<s32>(m_settings.audio_output_volume - 10, 0);
+                     m_settings.audio_output_muted = false;
+                     m_audio_stream->SetOutputVolume(m_settings.audio_output_volume);
+                     AddFormattedOSDMessage(2.0f, "Volume: %d%%", m_settings.audio_output_volume);
+                   }
+                 });
+}
+
 std::string CommonHostInterface::GetPathForInputProfile(const char* name) const
 {
   return GetUserDirectoryRelativePath("inputprofiles/%s.ini", name);
diff --git a/src/frontend-common/common_host_interface.h b/src/frontend-common/common_host_interface.h
index f93e37ac6..e482a5996 100644
--- a/src/frontend-common/common_host_interface.h
+++ b/src/frontend-common/common_host_interface.h
@@ -124,6 +124,7 @@ private:
   void RegisterGeneralHotkeys();
   void RegisterGraphicsHotkeys();
   void RegisterSaveStateHotkeys();
+  void RegisterAudioHotkeys();
   void UpdateControllerInputMap(SettingsInterface& si);
   void UpdateHotkeyInputMap(SettingsInterface& si);
   void ClearAllControllerBindings(SettingsInterface& si);