Issue 7968: Added keybinds for increasing, decreasing, and muting audio.

Source/Core/AudioCommon/AudioCommon.cpp

@@ -27,6 +27,9 @@ static bool s_audio_dump_start = false;
 
 namespace AudioCommon
 {
+	static const int AUDIO_VOLUME_MIN = 0;
+	static const int AUDIO_VOLUME_MAX = 100;
+
 	SoundStream* InitSoundStream()
 	{
 		CMixer *mixer = new CMixer(48000);
@@ -140,11 +143,13 @@ namespace AudioCommon
 			}
 		}
 	}
+
 	void UpdateSoundStream()
 	{
 		if (g_sound_stream)
 		{
-			g_sound_stream->SetVolume(SConfig::GetInstance().m_Volume);
+			int volume = SConfig::GetInstance().m_IsMuted ? 0 : SConfig::GetInstance().m_Volume;
+			g_sound_stream->SetVolume(volume);
 		}
 	}
 
@@ -191,4 +196,31 @@ namespace AudioCommon
 		g_sound_stream->GetMixer()->StopLogDSPAudio();
 		s_audio_dump_start = false;
 	}
+
+	void IncreaseVolume(unsigned short offset)
+	{
+		SConfig::GetInstance().m_IsMuted = false;
+		int& currentVolume = SConfig::GetInstance().m_Volume;
+		currentVolume += offset;
+		if (currentVolume > AUDIO_VOLUME_MAX)
+			currentVolume = AUDIO_VOLUME_MAX;
+		UpdateSoundStream();
+	}
+
+	void DecreaseVolume(unsigned short offset)
+	{
+		SConfig::GetInstance().m_IsMuted = false;
+		int& currentVolume = SConfig::GetInstance().m_Volume;
+		currentVolume -= offset;
+		if (currentVolume < AUDIO_VOLUME_MIN)
+			currentVolume = AUDIO_VOLUME_MIN;
+		UpdateSoundStream();
+	}
+
+	void ToggleMuteVolume()
+	{
+		bool& isMuted = SConfig::GetInstance().m_IsMuted;
+		isMuted = !isMuted;
+		UpdateSoundStream();
+	}
 }

Source/Core/AudioCommon/AudioCommon.h

@@ -23,4 +23,7 @@ namespace AudioCommon
 	void SendAIBuffer(short* samples, unsigned int num_samples);
 	void StartAudioDump();
 	void StopAudioDump();
+	void IncreaseVolume(unsigned short offset);
+	void DecreaseVolume(unsigned short offset);
+	void ToggleMuteVolume();
 }

Source/Core/Core/ConfigManager.cpp

@@ -62,6 +62,11 @@ static const struct
 	{ "Wiimote4Connect",    347 /* WXK_F8 */,     1 /* wxMOD_ALT */ },
 	{ "BalanceBoardConnect",348 /* WXK_F9 */,     1 /* wxMOD_ALT */ },
 #endif
+
+	{ "VolumeUp",            0,                    0 /* wxMOD_NONE */ },
+	{ "VolumeDown",          0,                    0 /* wxMOD_NONE */ },
+	{ "VolumeToggleMute",    0,                    0 /* wxMOD_NONE */ },
+
 	{ "ToggleIR",            0,                   0 /* wxMOD_NONE */ },
 	{ "ToggleAspectRatio",   0,                   0 /* wxMOD_NONE */ },
 	{ "ToggleEFBCopies",     0,                   0 /* wxMOD_NONE */ },
@@ -609,6 +614,8 @@ void SConfig::LoadDSPSettings(IniFile& ini)
 #endif
 	dsp->Get("Volume", &m_Volume, 100);
 	dsp->Get("CaptureLog", &m_DSPCaptureLog, false);
+
+	m_IsMuted = false;
 }
 
 void SConfig::LoadInputSettings(IniFile& ini)

Source/Core/Core/ConfigManager.h

@@ -102,6 +102,7 @@ struct SConfig : NonCopyable
 	bool m_DSPEnableJIT;
 	bool m_DSPCaptureLog;
 	bool m_DumpAudio;
+	bool m_IsMuted;
 	int m_Volume;
 	std::string sBackend;
 

Source/Core/Core/CoreParameter.h

@@ -34,6 +34,10 @@ enum Hotkey
 	HK_WIIMOTE4_CONNECT,
 	HK_BALANCEBOARD_CONNECT,
 
+	HK_VOLUME_UP,
+	HK_VOLUME_DOWN,
+	HK_VOLUME_TOGGLE_MUTE,
+
 	HK_TOGGLE_IR,
 	HK_TOGGLE_AR,
 	HK_TOGGLE_EFBCOPIES,

Source/Core/DolphinWX/Frame.cpp

@@ -64,6 +64,8 @@
 #include "VideoCommon/VertexShaderManager.h"
 #include "VideoCommon/VideoConfig.h"
 
+#include "AudioCommon/AudioCommon.h"
+
 // Resources
 
 extern "C" {
@@ -1059,6 +1061,12 @@ void CFrame::OnKeyDown(wxKeyEvent& event)
 			Core::SaveScreenShot();
 		else if (IsHotkey(event, HK_EXIT))
 			wxPostEvent(this, wxCommandEvent(wxID_EXIT));
+		else if (IsHotkey(event, HK_VOLUME_UP))
+			AudioCommon::IncreaseVolume(3);
+		else if (IsHotkey(event, HK_VOLUME_DOWN))
+			AudioCommon::DecreaseVolume(3);
+		else if (IsHotkey(event, HK_VOLUME_TOGGLE_MUTE))
+			AudioCommon::ToggleMuteVolume();
 		// Wiimote connect and disconnect hotkeys
 		else if (IsHotkey(event, HK_WIIMOTE1_CONNECT))
 			WiimoteId = 0;

Source/Core/DolphinWX/HotkeyDlg.cpp

@@ -219,6 +219,10 @@ void HotkeyConfigDialog::CreateHotkeyGUIControls()
 		_("Connect Wiimote 4"),
 		_("Connect Balance Board"),
 
+		_("Volume up"),
+		_("Volume down"),
+		_("Volume toggle mute"),
+
 		_("Toggle IR"),
 		_("Toggle Aspect Ratio"),
 		_("Toggle EFB Copies"),