Audio volume slider support for OS X.

git-svn-id: https://dolphin-emu.googlecode.com/svn/trunk@6720 8ced0084-cf51-0410-be5f-012b33b47a6e

Source/Core/AudioCommon/Src/AudioCommon.cpp

@@ -22,9 +22,7 @@
 #include "XAudio2Stream.h"
 #include "AOSoundStream.h"
 #include "AlsaSoundStream.h"
-#ifdef __APPLE__
 #include "CoreAudioSoundStream.h"
-#endif
 #include "OpenALStream.h"
 #include "PulseAudioStream.h"
 
@@ -49,10 +47,8 @@ namespace AudioCommon
 			soundStream = new AOSound(mixer);
 		else if (backend == BACKEND_ALSA        && AlsaSound::isValid())
 			soundStream = new AlsaSound(mixer);
-#ifdef __APPLE__
 		else if (backend == BACKEND_COREAUDIO   && CoreAudioSound::isValid()) 
 			soundStream = new CoreAudioSound(mixer);
-#endif
 		else if (backend == BACKEND_PULSEAUDIO  && PulseAudio::isValid())
 			soundStream = new PulseAudio(mixer);
 
@@ -109,10 +105,8 @@ namespace AudioCommon
 			backends.push_back(BACKEND_AOSOUND);
 		if (AlsaSound::isValid()) 
 			backends.push_back(BACKEND_ALSA);
-#ifdef __APPLE__
 		if (CoreAudioSound::isValid())       
 			backends.push_back(BACKEND_COREAUDIO);
-#endif
 		if (PulseAudio::isValid()) 
 			backends.push_back(BACKEND_PULSEAUDIO);
 	   

Source/Core/AudioCommon/Src/CoreAudioSoundStream.cpp

@@ -112,6 +112,18 @@ bool CoreAudioSound::Start()
 	return true;
 }
 
+void CoreAudioSound::SetVolume(int volume)
+{
+	OSStatus err;
+
+	err = AudioUnitSetParameter(audioUnit,
+					kHALOutputParam_Volume,
+					kAudioUnitParameterFlag_Output, 0,
+					volume / 100., 0);
+	if (err != noErr)
+		ERROR_LOG(AUDIO, "error setting volume");
+}
+
 void CoreAudioSound::SoundLoop()
 {
 }
@@ -121,22 +133,16 @@ void CoreAudioSound::Stop()
 	OSStatus err;
 
 	err = AudioOutputUnitStop(audioUnit);
-	if (err != noErr) {
+	if (err != noErr)
 		ERROR_LOG(AUDIO, "error stopping audiounit");
-		return;
-	}
 
 	err = AudioUnitUninitialize(audioUnit);
-	if (err != noErr) {
+	if (err != noErr)
 		ERROR_LOG(AUDIO, "error uninitializing audiounit");
-		return;
-	}
 
 	err = CloseComponent(audioUnit);
-	if (err != noErr) {
+	if (err != noErr)
 		ERROR_LOG(AUDIO, "error closing audio component");
-		return;
-	}
 }
 
 void CoreAudioSound::Update()

Source/Core/AudioCommon/Src/CoreAudioSoundStream.h

@@ -18,15 +18,15 @@
 #ifndef _COREAUDIO_SOUND_STREAM_H
 #define _COREAUDIO_SOUND_STREAM_H
 
-#include <CoreAudio/AudioHardware.h>
+#ifdef __APPLE__
 #include <AudioUnit/AudioUnit.h>
-#include <CoreServices/CoreServices.h>
+#endif
 
-#include "Common.h"
 #include "SoundStream.h"
 
 class CoreAudioSound : public SoundStream
 {
+#ifdef __APPLE__
 	ComponentDescription desc;
 	AudioUnit audioUnit;
 
@@ -35,6 +35,7 @@ public:
 	virtual ~CoreAudioSound();
 	
 	virtual bool Start();
+	virtual void SetVolume(int volume);
 	virtual void SoundLoop();
 	virtual void Stop();
 	
@@ -48,6 +49,10 @@ public:
 	virtual void Update();
 
 	void RenderSamples(void *target, UInt32 size);
+#else
+public:
+	CoreAudioSound(CMixer *mixer) : SoundStream(mixer) {}
+#endif
 };
 
 #endif

Source/Plugins/Plugin_DSP_HLE/Src/ConfigDlg.cpp

@@ -78,7 +78,6 @@ DSPConfigDialogHLE::DSPConfigDialogHLE(wxWindow *parent, wxWindowID id,
 		SetToolTip(wxT("Changing this will have no effect while the emulator is running!"));
 	m_BackendSelection->
 		SetToolTip(wxT("Changing this will have no effect while the emulator is running!"));
-	m_volumeSlider->SetToolTip(wxT("This setting only affects DSound, OpenAL, XAudio2, and PulseAudio."));
 
 	// Create sizer and add items to dialog
 	wxBoxSizer *sMain = new wxBoxSizer(wxVERTICAL);
@@ -182,6 +181,7 @@ bool DSPConfigDialogHLE::SupportsVolumeChanges(std::string backend)
 	//       but getting the backend from string etc. is probably
 	//       too much just to enable/disable a stupid slider...
 	return (backend == BACKEND_DIRECTSOUND ||
+			backend == BACKEND_COREAUDIO ||
 			backend == BACKEND_OPENAL ||
 			backend == BACKEND_XAUDIO2 ||
 			backend == BACKEND_PULSEAUDIO);

Source/Plugins/Plugin_DSP_LLE/Src/DSPConfigDlgLLE.cpp

@@ -64,7 +64,6 @@ DSPConfigDialogLLE::DSPConfigDialogLLE(wxWindow *parent, wxWindowID id, const wx
 	m_buttonEnableJIT->SetToolTip(wxT("Enables dynamic recompilation of DSP code.\n")
 		wxT("Changing this will have no effect while the emulator is running!"));
 	m_BackendSelection->SetToolTip(wxT("Changing this will have no effect while the emulator is running!"));
-	m_volumeSlider->SetToolTip(wxT("This setting only affects DSound, OpenAL, and PulseAudio."));
 
 	// Create sizer and add items to dialog
 	wxBoxSizer *sMain = new wxBoxSizer(wxVERTICAL);
@@ -151,6 +150,7 @@ bool DSPConfigDialogLLE::SupportsVolumeChanges(std::string backend)
 	//       but getting the backend from string etc. is probably
 	//       too much just to enable/disable a stupid slider...
 	return (backend == BACKEND_DIRECTSOUND ||
+			backend == BACKEND_COREAUDIO ||
 			backend == BACKEND_OPENAL ||
 			backend == BACKEND_XAUDIO2 ||
 			backend == BACKEND_PULSEAUDIO);