Cocoa Port: Refactor the hardware mic stuff out of CocoaDSController and into ClientInputHandler.

desmume/src/frontend/cocoa/ClientInputHandler.cpp

@@ -73,7 +73,14 @@ ClientInputHandler::ClientInputHandler()
 	_internalNoiseGenerator = new InternalNoiseGenerator;
 	_whiteNoiseGenerator = new WhiteNoiseGenerator;
 	_sineWaveGenerator = new SineWaveGenerator(250.0, MIC_SAMPLE_RATE);
-	_selectedAudioFileGenerator = NULL;
+	_selectedAudioFileGenerator = NULL; // Note that this value can be NULL.
+	_hardwareMicSampleGenerator = _nullSampleGenerator;
+	
+	_avgMicLevel = 0.0f;
+	_avgMicLevelTotal = 0.0f;
+	_avgMicLevelsRead = 0.0f;
+	_isHardwareMicMuted = true;
+	_isHardwareMicPaused = true;
 	
 	_enableAutohold = false;
 	
@@ -83,7 +90,9 @@ ClientInputHandler::ClientInputHandler()
 	_paddleValuePending   = _paddleValueProcessing   = _paddleValueApplied   = 0;
 	_paddleAdjustPending  = _paddleAdjustProcessing  = _paddleAdjustApplied  = 0;
 	
-	_softwareMicSampleGeneratorPending = _softwareMicSampleGeneratorProcessing = _softwareMicSampleGeneratorApplied = _nullSampleGenerator;
+	_softwareMicSampleGeneratorPending = _nullSampleGenerator;
+	_softwareMicSampleGeneratorProcessing = _nullSampleGenerator;
+	_softwareMicSampleGeneratorApplied = _nullSampleGenerator;
 	
 	memset(_clientInputPending, 0, sizeof(_clientInputPending));
 	memset(_clientInputProcessing, 0, sizeof(_clientInputProcessing));
@@ -257,6 +266,35 @@ void ClientInputHandler::SetSineWaveFrequency(double freq)
 	this->_sineWaveGenerator->setFrequency(freq);
 }
 
+float ClientInputHandler::GetAverageMicLevel()
+{
+	return this->_avgMicLevel;
+}
+
+void ClientInputHandler::AddSampleToAverageMicLevel(uint8_t sampleValue)
+{
+	this->_avgMicLevelTotal += (float)( (MIC_NULL_SAMPLE_VALUE > sampleValue) ? MIC_NULL_SAMPLE_VALUE - sampleValue : sampleValue - MIC_NULL_SAMPLE_VALUE );
+	this->_avgMicLevelsRead += 1.0f;
+	this->_avgMicLevel = this->_avgMicLevelTotal / this->_avgMicLevelsRead;
+}
+
+void ClientInputHandler::ClearAverageMicLevel()
+{
+	this->_avgMicLevelTotal = 0.0f;
+	this->_avgMicLevelsRead = 0.0f;
+	this->_avgMicLevel = 0.0f;
+}
+
+bool ClientInputHandler::IsMicrophoneIdle()
+{
+	return (this->_avgMicLevel < MIC_NULL_LEVEL_THRESHOLD);
+}
+
+bool ClientInputHandler::IsMicrophoneClipping()
+{
+	return (this->_avgMicLevel >= MIC_CLIP_LEVEL_THRESHOLD);
+}
+
 AudioGenerator* ClientInputHandler::GetClientSoftwareMicSampleGenerator()
 {
 	pthread_mutex_lock(&this->_mutexInputsPending);
@@ -287,6 +325,23 @@ void ClientInputHandler::SetClientSelectedAudioFileGenerator(AudioSampleBlockGen
 	pthread_mutex_unlock(&this->_mutexInputsPending);
 }
 
+void ClientInputHandler::SetClientHardwareMicSampleGeneratorApplied(AudioGenerator *hwGenerator)
+{
+	if (hwGenerator == NULL)
+	{
+		this->_hardwareMicSampleGenerator = this->_nullSampleGenerator;
+	}
+	else
+	{
+		this->_hardwareMicSampleGenerator = hwGenerator;
+	}
+}
+
+AudioGenerator* ClientInputHandler::GetClientHardwareMicSampleGeneratorApplied()
+{
+	return this->_hardwareMicSampleGenerator;
+}
+
 bool ClientInputHandler::GetClientSoftwareMicState()
 {
 	pthread_mutex_lock(&this->_mutexInputsPending);
@@ -611,3 +666,73 @@ void ClientInputHandler::ApplyInputs()
 		FCEUMOV_HandleRecording();
 	}
 }
+
+bool ClientInputHandler::IsHardwareMicAvailable()
+{
+	// Do nothing. This is implementation-dependent.
+	return false;
+}
+
+void ClientInputHandler::ResetHardwareMic()
+{
+	this->ClearAverageMicLevel();
+	this->ReportAverageMicLevel();
+	
+	this->_hardwareMicSampleGenerator->resetSamples();
+}
+
+uint8_t ClientInputHandler::HandleMicSampleRead()
+{
+	uint8_t theSample = MIC_NULL_SAMPLE_VALUE;
+	AudioGenerator *sampleGenerator = (this->GetClientSoftwareMicStateApplied()) ? this->GetClientSoftwareMicSampleGeneratorApplied() : this->_hardwareMicSampleGenerator;
+	
+	theSample = sampleGenerator->generateSample();
+	
+	this->AddSampleToAverageMicLevel(theSample);
+	return theSample;
+}
+
+void ClientInputHandler::ReportAverageMicLevel()
+{
+	// Do nothing. This is implementation-dependent.
+	// This method mainly exists for implementations to do some stuff during the
+	// emulation loop.
+}
+
+bool ClientInputHandler::GetHardwareMicMute()
+{
+	return this->_isHardwareMicMuted;
+}
+
+void ClientInputHandler::SetHardwareMicMute(bool muteState)
+{	
+	this->_isHardwareMicMuted = muteState;
+	
+	if (muteState)
+	{
+		this->_hardwareMicSampleGenerator->resetSamples();
+		this->ClearAverageMicLevel();
+	}
+}
+
+bool ClientInputHandler::GetHardwareMicPause()
+{
+	return this->_isHardwareMicPaused;
+}
+
+void ClientInputHandler::SetHardwareMicPause(bool pauseState)
+{
+	this->_isHardwareMicPaused = pauseState;
+}
+
+float ClientInputHandler::GetHardwareMicNormalizedGain()
+{
+	// Do nothing. This is implementation-dependent.
+	// The default value is 0.0f, which represents 0.0% of the hardware device's pickup sensitivity.
+	return 0.0f;
+}
+
+void ClientInputHandler::SetHardwareMicGainAsNormalized(float normalizedGain)
+{
+	// Do nothing. This is implementation-dependent.
+}

desmume/src/frontend/cocoa/ClientInputHandler.h

@@ -330,6 +330,8 @@ protected:
 	SineWaveGenerator *_sineWaveGenerator;
 	AudioSampleBlockGenerator *_selectedAudioFileGenerator;
 	
+	AudioGenerator *_hardwareMicSampleGenerator;
+	
 	ClientInput _clientInputPending[NDSInputID_InputCount];
 	ClientInput _clientInputProcessing[NDSInputID_InputCount];
 	ClientInput _clientInputApplied[NDSInputID_InputCount];
@@ -354,6 +356,12 @@ protected:
 	int16_t _paddleValueApplied;
 	int16_t _paddleAdjustApplied;
 	
+	float _avgMicLevel;
+	float _avgMicLevelTotal;
+	float _avgMicLevelsRead;
+	bool _isHardwareMicMuted;
+	bool _isHardwareMicPaused;
+	
 	pthread_mutex_t _mutexInputsPending;
 	
 public:
@@ -374,11 +382,21 @@ public:
 	double GetSineWaveFrequency();
 	void SetSineWaveFrequency(double freq);
 	
+	float GetAverageMicLevel();	
+	void AddSampleToAverageMicLevel(uint8_t sampleValue);
+	void ClearAverageMicLevel();
+	
+	bool IsMicrophoneIdle();
+	bool IsMicrophoneClipping();
+	
 	AudioGenerator* GetClientSoftwareMicSampleGenerator();
 	AudioGenerator* GetClientSoftwareMicSampleGeneratorApplied();
 	AudioSampleBlockGenerator* GetClientSelectedAudioFileGenerator();
 	void SetClientSelectedAudioFileGenerator(AudioSampleBlockGenerator *selectedAudioFileGenerator);
 	
+	void SetClientHardwareMicSampleGeneratorApplied(AudioGenerator *hwGenerator);
+	AudioGenerator* GetClientHardwareMicSampleGeneratorApplied();
+	
 	bool GetClientSoftwareMicState();
 	bool GetClientSoftwareMicStateApplied();
 	void SetClientSoftwareMicState(bool pressedState, MicrophoneMode micMode);
@@ -395,6 +413,20 @@ public:
 	
 	void ProcessInputs();
 	void ApplyInputs();
+	
+	virtual bool IsHardwareMicAvailable();
+	virtual void ResetHardwareMic();
+	virtual uint8_t HandleMicSampleRead();
+	virtual void ReportAverageMicLevel();
+	
+	virtual bool GetHardwareMicMute();
+	virtual void SetHardwareMicMute(bool muteState);
+	
+	virtual bool GetHardwareMicPause();
+	virtual void SetHardwareMicPause(bool pauseState);
+	
+	virtual float GetHardwareMicNormalizedGain();
+	virtual void SetHardwareMicGainAsNormalized(float normalizedGain);
 };
 
 #endif // _CLIENT_INPUT_HANDLER_H_

desmume/src/frontend/cocoa/audiosamplegenerator.cpp

@@ -33,6 +33,21 @@ static const uint8_t noiseSample[NUM_INTERNAL_NOISE_SAMPLES] =
 	0xF4, 0xE1, 0xBF, 0x9A, 0x71, 0x58, 0x5B, 0x5F, 0x62, 0xC2, 0x25, 0x05, 0x01, 0x01, 0x01, 0x01
 };
 
+size_t AudioGenerator::resetSamples()
+{
+	// Do nothing. This is implementation-dependent.
+	//
+	// The return value represents the number of samples that were dropped.
+	// By default, return 0 to signify that no samples are dropped. In other
+	// words, all samples will continue to exist after the reset.
+	return 0;
+}
+
+uint8_t AudioGenerator::generateSample()
+{
+	return MIC_NULL_SAMPLE_VALUE;
+}
+
 size_t AudioGenerator::generateSampleBlock(size_t sampleCount, uint8_t *outBuffer)
 {
 	if (outBuffer == NULL)
@@ -48,11 +63,6 @@ size_t AudioGenerator::generateSampleBlock(size_t sampleCount, uint8_t *outBuffe
 	return sampleCount;
 }
 
-uint8_t AudioGenerator::generateSample()
-{
-	return MIC_NULL_SAMPLE_VALUE;
-}
-
 AudioSampleBlockGenerator::AudioSampleBlockGenerator(const uint8_t *audioBuffer, const size_t sampleCount)
 {
 	_buffer = (uint8_t *)malloc(sampleCount * sizeof(uint8_t));

desmume/src/frontend/cocoa/audiosamplegenerator.h

@@ -28,8 +28,9 @@ public:
 	AudioGenerator() {};
 	virtual ~AudioGenerator() {};
 	
-	virtual size_t generateSampleBlock(size_t sampleCount, uint8_t *outBuffer);
+	virtual size_t resetSamples();
 	virtual uint8_t generateSample();
+	virtual size_t generateSampleBlock(size_t sampleCount, uint8_t *outBuffer);
 };
 
 class NullGenerator : public AudioGenerator {};

desmume/src/frontend/cocoa/cocoa_core.mm

@@ -870,7 +870,6 @@ volatile bool execute = true;
 	[self setMasterExecute:YES];
 	[self restoreCoreState];
 	[[self cdsController] reset];
-	[[self cdsController] updateMicLevel];
 }
 
 - (void) getTimedEmulatorStatistics:(NSTimer *)timer
@@ -1159,6 +1158,10 @@ static void* RunCoreThread(void *arg)
 			NDSError ndsError = NDS_GetLastError();
 			pthread_mutex_unlock(&param->mutexThreadExecute);
 			
+			inputHandler->SetHardwareMicPause(true);
+			inputHandler->ClearAverageMicLevel();
+			inputHandler->ReportAverageMicLevel();
+			
 			[cdsCore postNDSError:ndsError];
 			continue;
 		}
@@ -1167,9 +1170,8 @@ static void* RunCoreThread(void *arg)
 		// of whether the NDS actually reads the mic or not.
 		if ((ndsFrameInfo.frameIndex & 0x07) == 0x07)
 		{
-			CocoaDSController *cdsController = [cdsCore cdsController];
+			inputHandler->ReportAverageMicLevel();
-			[cdsController updateMicLevel];
+			inputHandler->ClearAverageMicLevel();
-			[cdsController clearMicLevelMeasure];
 		}
 		
 		const uint8_t framesToSkip = execControl->GetFramesToSkip();

desmume/src/frontend/cocoa/cocoa_input.h

@@ -20,6 +20,8 @@
 #include <libkern/OSAtomic.h>
 #include <vector>
 
+#include "ClientInputHandler.h"
+
 @class CocoaDSController;
 class ClientInputHandler;
 class CoreAudioInput;
@@ -45,16 +47,7 @@ class AudioSampleBlockGenerator;
 	ClientInputHandler *inputHandler;
 	
 	NSInteger stylusPressure;
-	
+		
-	float micLevel;
-	float _micLevelTotal;
-	float _micLevelsRead;
-	
-	BOOL hardwareMicMute;
-	size_t _availableMicSamples;
-	
-	CoreAudioInput *CAInputDevice;
-	
 	NSString *hardwareMicInfoString;
 	NSString *hardwareMicNameString;
 	NSString *hardwareMicManufacturerString;
@@ -70,13 +63,9 @@ class AudioSampleBlockGenerator;
 @property (readonly) BOOL isHardwareMicIdle;
 @property (readonly) BOOL isHardwareMicInClip;
 @property (assign) float micLevel;
-@property (assign) BOOL hardwareMicEnabled;
-@property (readonly) BOOL hardwareMicLocked;
 @property (assign) float hardwareMicGain;
 @property (assign) BOOL hardwareMicMute;
 @property (assign) BOOL hardwareMicPause;
-@property (readonly) CoreAudioInput *CAInputDevice;
-@property (readonly) AudioGenerator *softwareMicSampleGenerator;
 @property (assign) AudioSampleBlockGenerator *selectedAudioFileGenerator;
 @property (retain) NSString *hardwareMicInfoString;
 @property (retain) NSString *hardwareMicNameString;
@@ -91,10 +80,8 @@ class AudioSampleBlockGenerator;
 - (void) setSineWaveGeneratorFrequency:(const double)freq;
 - (void) clearAutohold;
 - (void) reset;
+- (void) startHardwareMicDevice;
 
-- (void) clearMicLevelMeasure;
-- (void) updateMicLevel;
-- (uint8_t) handleMicSampleRead:(CoreAudioInput *)caInput softwareMic:(AudioGenerator *)sampleGenerator;
 - (void) handleMicHardwareStateChanged:(CoreAudioInputDeviceInfo *)deviceInfo
 							 isEnabled:(BOOL)isHardwareEnabled
 							  isLocked:(BOOL)isHardwareLocked;
@@ -102,6 +89,33 @@ class AudioSampleBlockGenerator;
 
 @end
 
+class MacInputHandler : public ClientInputHandler
+{
+private:
+	CocoaDSController *_cdsController;
+	CoreAudioInput *_CAInputDevice;
+	
+public:
+	MacInputHandler();
+	~MacInputHandler();
+	
+	CocoaDSController* GetCocoaController();
+	void SetCocoaController(CocoaDSController *theController);
+	
+	void StartHardwareMicDevice();
+	
+	virtual bool IsHardwareMicAvailable();
+	virtual void ReportAverageMicLevel();
+	
+	virtual void SetHardwareMicMute(bool muteState);
+		
+	virtual bool GetHardwareMicPause();
+	virtual void SetHardwareMicPause(bool pauseState);
+	
+	virtual float GetHardwareMicNormalizedGain();
+	virtual void SetHardwareMicGainAsNormalized(float normalizedGain);
+};
+
 #ifdef __cplusplus
 extern "C"
 {

desmume/src/frontend/cocoa/cocoa_input.mm

@@ -26,8 +26,6 @@
 #include "../../slot2.h"
 #undef BOOL
 
-#include "ClientInputHandler.h"
-
 
 @implementation CocoaDSController
 
@@ -39,14 +37,10 @@
 @dynamic isHardwareMicAvailable;
 @dynamic isHardwareMicIdle;
 @dynamic isHardwareMicInClip;
-@synthesize micLevel;
+@dynamic micLevel;
-@dynamic hardwareMicEnabled;
-@dynamic hardwareMicLocked;
 @dynamic hardwareMicGain;
-@synthesize hardwareMicMute;
+@dynamic hardwareMicMute;
 @dynamic hardwareMicPause;
-@synthesize CAInputDevice;
-@dynamic softwareMicSampleGenerator;
 @dynamic selectedAudioFileGenerator;
 @synthesize hardwareMicInfoString;
 @synthesize hardwareMicNameString;
@@ -62,32 +56,20 @@
 	}
 		
 	delegate = nil;
-	inputHandler = new ClientInputHandler;
+		
-	_availableMicSamples = 0;
-	
-	micLevel = 0.0f;
-	_micLevelTotal = 0.0f;
-	_micLevelsRead = 0.0f;
-	
-	CAInputDevice = new CoreAudioInput;
-	CAInputDevice->SetCallbackHardwareStateChanged(&CAHardwareStateChangedCallback, self, NULL);
-	CAInputDevice->SetCallbackHardwareGainChanged(&CAHardwareGainChangedCallback, self, NULL);
-	
 	hardwareMicInfoString = @"No hardware input detected.";
 	hardwareMicNameString = @"No hardware input detected.";
 	hardwareMicManufacturerString = @"No hardware input detected.";
 	hardwareMicSampleRateString = @"No hardware input detected.";
 	
-	Mic_SetResetCallback(&CAResetCallback, self, NULL);
+	inputHandler = new MacInputHandler;
-	Mic_SetSampleReadCallback(&CASampleReadCallback, self, NULL);
+	((MacInputHandler *)inputHandler)->SetCocoaController(self);
 	
 	return self;
 }
 
 - (void)dealloc
 {
-	delete CAInputDevice;
-	
 	[self setDelegate:nil];
 	[self setHardwareMicInfoString:nil];
 	[self setHardwareMicNameString:nil];
@@ -104,62 +86,66 @@
 
 - (BOOL) isHardwareMicAvailable
 {
-	return ( CAInputDevice->IsHardwareEnabled() &&
+	return (inputHandler->IsHardwareMicAvailable()) ? YES : NO;
-			!CAInputDevice->IsHardwareLocked() &&
-			!CAInputDevice->GetPauseState() ) ? YES : NO;
 }
 
 - (BOOL) isHardwareMicIdle
 {
-	return (micLevel < MIC_NULL_LEVEL_THRESHOLD);
+	return (inputHandler->IsMicrophoneIdle()) ? YES : NO;
 }
 
 - (BOOL) isHardwareMicInClip
 {
-	return (micLevel >= MIC_CLIP_LEVEL_THRESHOLD);
+	return (inputHandler->IsMicrophoneClipping()) ? YES : NO;
 }
 
-- (void) setHardwareMicEnabled:(BOOL)micEnabled
+- (void) setMicLevel:(float)micLevelValue
 {
-	if (micEnabled)
+	// This method doesn't set the mic level, since the mic level is always an internally
+	// calculated value. What this method actually does is trigger updates for any
+	// KVO-compliant controls that are associated with this property.
+	
+	if ( (delegate != nil) && [delegate respondsToSelector:@selector(doMicLevelUpdateFromController:)] )
 	{
-		CAInputDevice->Start();
+		NSAutoreleasePool *tempPool = [[NSAutoreleasePool alloc] init];
-	}
+		[[self delegate] doMicLevelUpdateFromController:self];
-	else
+		[tempPool release];
-	{
-		CAInputDevice->Stop();
 	}
 }
 
-- (BOOL) hardwareMicEnabled
+- (float) micLevel
 {
-	return (CAInputDevice->IsHardwareEnabled()) ? YES : NO;
+	return inputHandler->GetAverageMicLevel();
-}
-
-- (BOOL) hardwareMicLocked
-{
-	return (CAInputDevice->IsHardwareLocked()) ? YES : NO;
 }
 
 - (void) setHardwareMicGain:(float)micGain
 {
-	CAInputDevice->SetGain(micGain);
+	inputHandler->SetHardwareMicGainAsNormalized(micGain);
 }
 
 - (float) hardwareMicGain
 {
-	return CAInputDevice->GetGain();
+	return inputHandler->GetHardwareMicNormalizedGain();
+}
+
+- (void) setHardwareMicMute:(BOOL)isMicMuted
+{
+	inputHandler->SetHardwareMicMute((isMicMuted) ? true : false);
+}
+
+- (BOOL) hardwareMicMute
+{
+	return (inputHandler->GetHardwareMicMute()) ? YES : NO;
 }
 
 - (void) setHardwareMicPause:(BOOL)isMicPaused
 {
-	bool pauseState = (isMicPaused || [self hardwareMicMute]) ? true : false;
+	inputHandler->SetHardwareMicPause((isMicPaused) ? true : false);
-	CAInputDevice->SetPauseState(pauseState);
 }
 
 - (BOOL) hardwareMicPause
 {
-	return (CAInputDevice->GetPauseState()) ? YES : NO;
+	return (inputHandler->GetHardwareMicPause()) ? YES : NO;
 }
 
 - (void) setSoftwareMicState:(BOOL)theState mode:(NSInteger)micMode
@@ -172,11 +158,6 @@
 	return (inputHandler->GetClientSoftwareMicState()) ? YES : NO;
 }
 
-- (AudioGenerator *) softwareMicSampleGenerator
-{
-	return inputHandler->GetClientSoftwareMicSampleGenerator();
-}
-
 - (void) setSelectedAudioFileGenerator:(AudioSampleBlockGenerator *)audioGenerator
 {
 	inputHandler->SetClientSelectedAudioFileGenerator(audioGenerator);
@@ -246,63 +227,13 @@
 - (void) reset
 {
 	[self setAutohold:NO];
-	[self setMicLevel:0.0f];
-	[self clearMicLevelMeasure];
 	
-	_availableMicSamples = 0;
+	inputHandler->ResetHardwareMic();
 }
 
-- (void) clearMicLevelMeasure
+- (void) startHardwareMicDevice
 {
-	_micLevelTotal = 0.0f;
+	((MacInputHandler *)inputHandler)->StartHardwareMicDevice();
-	_micLevelsRead = 0.0f;
-}
-
-- (void) updateMicLevel
-{
-	float avgMicLevel = (_micLevelsRead != 0) ? _micLevelTotal / _micLevelsRead : 0.0f;
-	
-	NSAutoreleasePool *tempPool = [[NSAutoreleasePool alloc] init];
-	[self setMicLevel:avgMicLevel];
-	
-	if (delegate != nil && [delegate respondsToSelector:@selector(doMicLevelUpdateFromController:)])
-	{
-		[[self delegate] doMicLevelUpdateFromController:self];
-	}
-	
-	[tempPool release];
-}
-
-- (uint8_t) handleMicSampleRead:(CoreAudioInput *)caInput softwareMic:(AudioGenerator *)sampleGenerator
-{
-	uint8_t theSample = MIC_NULL_SAMPLE_VALUE;
-	
-	if (!inputHandler->GetClientSoftwareMicStateApplied() && (caInput != NULL))
-	{
-		if (caInput->GetPauseState())
-		{
-			return theSample;
-		}
-		else
-		{
-			if (_availableMicSamples == 0)
-			{
-				_availableMicSamples = CAInputDevice->Pull();
-			}
-			
-			caInput->_samplesConverted->read(&theSample, 1);
-			theSample >>= 1; // Samples from CoreAudio are 8-bit, so we need to convert the sample to 7-bit
-			_availableMicSamples--;
-		}
-	}
-	else
-	{
-		theSample = sampleGenerator->generateSample();
-	}
-	
-	_micLevelTotal += (float)( (MIC_NULL_SAMPLE_VALUE > theSample) ? MIC_NULL_SAMPLE_VALUE - theSample : theSample - MIC_NULL_SAMPLE_VALUE );
-	_micLevelsRead += 1.0f;
-	return theSample;
 }
 
 - (void) handleMicHardwareStateChanged:(CoreAudioInputDeviceInfo *)deviceInfo
@@ -329,10 +260,10 @@
 		[self setHardwareMicSampleRateString:[NSString stringWithFormat:@"%1.1f Hz", (double)deviceInfo->sampleRate]];
 	}
 	
-	[self clearMicLevelMeasure];
+	inputHandler->ClearAverageMicLevel();
-	[self setMicLevel:0.0f];
+	inputHandler->ReportAverageMicLevel();
 	
-	if (delegate != nil && [delegate respondsToSelector:@selector(doMicHardwareStateChangedFromController:isEnabled:isLocked:)])
+	if ( (delegate != nil) && [delegate respondsToSelector:@selector(doMicHardwareStateChangedFromController:isEnabled:isLocked:)] )
 	{
 		[[self delegate] doMicHardwareStateChangedFromController:self
 													   isEnabled:isHardwareEnabled
@@ -344,7 +275,7 @@
 
 - (void) handleMicHardwareGainChanged:(float)gainValue
 {
-	if (delegate != nil && [delegate respondsToSelector:@selector(doMicHardwareGainChangedFromController:gain:)])
+	if ( (delegate != nil) && [delegate respondsToSelector:@selector(doMicHardwareGainChangedFromController:gain:)] )
 	{
 		NSAutoreleasePool *tempPool = [[NSAutoreleasePool alloc] init];
 		[[self delegate] doMicHardwareGainChangedFromController:self gain:gainValue];
@@ -354,16 +285,105 @@
 
 @end
 
+MacInputHandler::MacInputHandler()
+{
+	_cdsController = nil;
+	_CAInputDevice = new CoreAudioInput;
+	_hardwareMicSampleGenerator = _CAInputDevice;
+	_isHardwareMicMuted = false;
+	
+	_CAInputDevice->SetCallbackHardwareStateChanged(&CAHardwareStateChangedCallback, _cdsController, NULL);
+	_CAInputDevice->SetCallbackHardwareGainChanged(&CAHardwareGainChangedCallback, _cdsController, NULL);
+	
+	Mic_SetResetCallback(&CAResetCallback, _CAInputDevice, NULL);
+	Mic_SetSampleReadCallback(&CASampleReadCallback, this, NULL);
+}
+
+MacInputHandler::~MacInputHandler()
+{
+	delete this->_CAInputDevice;
+}
+
+CocoaDSController* MacInputHandler::GetCocoaController()
+{
+	return this->_cdsController;
+}
+
+void MacInputHandler::SetCocoaController(CocoaDSController *theController)
+{
+	this->_cdsController = theController;
+	this->_CAInputDevice->SetCallbackHardwareStateChanged(&CAHardwareStateChangedCallback, theController, NULL);
+	this->_CAInputDevice->SetCallbackHardwareGainChanged(&CAHardwareGainChangedCallback, theController, NULL);
+}
+
+void MacInputHandler::StartHardwareMicDevice()
+{
+	this->_CAInputDevice->Start();
+}
+
+bool MacInputHandler::IsHardwareMicAvailable()
+{
+	return ( this->_CAInputDevice->IsHardwareEnabled() && !this->_CAInputDevice->IsHardwareLocked() );
+}
+
+void MacInputHandler::ReportAverageMicLevel()
+{
+	[this->_cdsController setMicLevel:this->GetAverageMicLevel()];
+}
+
+void MacInputHandler::SetHardwareMicMute(bool muteState)
+{
+	const bool needSetMuteState = (this->_isHardwareMicMuted != muteState);
+	
+	if (needSetMuteState)
+	{
+		if (muteState)
+		{
+			this->_hardwareMicSampleGenerator->resetSamples();
+			this->ClearAverageMicLevel();
+		}
+		
+		this->_isHardwareMicMuted = muteState;
+		this->_CAInputDevice->SetPauseState(this->_isHardwareMicPaused || muteState);
+	}
+}
+
+bool MacInputHandler::GetHardwareMicPause()
+{
+	return this->_CAInputDevice->GetPauseState();
+}
+
+void MacInputHandler::SetHardwareMicPause(bool pauseState)
+{
+	const bool needSetPauseState = (this->_isHardwareMicPaused != pauseState);
+	
+	if (needSetPauseState)
+	{
+		this->_isHardwareMicPaused = pauseState;
+		this->_CAInputDevice->SetPauseState(pauseState || this->_isHardwareMicMuted);
+	}
+}
+
+float MacInputHandler::GetHardwareMicNormalizedGain()
+{
+	return this->_CAInputDevice->GetNormalizedGain();
+}
+
+void MacInputHandler::SetHardwareMicGainAsNormalized(float normalizedGain)
+{
+	this->_CAInputDevice->SetGainAsNormalized(normalizedGain);
+}
+
 void CAResetCallback(void *inParam1, void *inParam2)
 {
-	CocoaDSController *cdsController = (CocoaDSController *)inParam1;
+	CoreAudioInput *caInputDevice = (CoreAudioInput *)inParam1;
-	[cdsController CAInputDevice]->Start();
+	caInputDevice->Start();
 }
 
 uint8_t CASampleReadCallback(void *inParam1, void *inParam2)
 {
-	CocoaDSController *cdsController = (CocoaDSController *)inParam1;
+	ClientInputHandler *inputHandler = (ClientInputHandler *)inParam1;
-	return [cdsController handleMicSampleRead:[cdsController CAInputDevice] softwareMic:[cdsController softwareMicSampleGenerator]];
+	return inputHandler->HandleMicSampleRead();
 }
 
 void CAHardwareStateChangedCallback(CoreAudioInputDeviceInfo *deviceInfo,

desmume/src/frontend/cocoa/coreaudiosound.cpp

@@ -47,7 +47,7 @@ CoreAudioInput::CoreAudioInput()
 	_hwDeviceInfo.deviceUID = CFSTR("");
 	_hwDeviceInfo.modelUID = CFSTR("");
 	_hwDeviceInfo.sampleRate = 0.0;
-	_isPaused = false;
+	_isPaused = true;
 	_isHardwareEnabled = false;
 	_isHardwareLocked = true;
 	_captureFrames = 0;
@@ -602,12 +602,12 @@ void CoreAudioInput::SetPauseState(bool pauseState)
 	this->_isPaused = (this->IsHardwareLocked()) ? true : pauseState;
 }
 
-float CoreAudioInput::GetGain() const
+float CoreAudioInput::GetNormalizedGain() const
 {
 	return this->_inputGainNormalized;
 }
 
-void CoreAudioInput::SetGain(float normalizedGain)
+void CoreAudioInput::SetGainAsNormalized(float normalizedGain)
 {
 	Float32 gainValue = normalizedGain;
 	UInt32 gainPropSize = sizeof(gainValue);
@@ -698,6 +698,36 @@ void CoreAudioInput::UpdateHardwareLock()
 									  this->_hwStateChangedCallbackParam2);
 }
 
+size_t CoreAudioInput::resetSamples()
+{
+	size_t samplesToDrop = this->_samplesConverted->getUsedElements();
+	this->_samplesConverted->clear();
+	
+	return samplesToDrop;
+}
+
+uint8_t CoreAudioInput::generateSample()
+{
+	uint8_t theSample = MIC_NULL_SAMPLE_VALUE;
+	
+	if (this->_isPaused)
+	{
+		return theSample;
+	}
+	else
+	{
+		if (this->_samplesConverted->getUsedElements() == 0)
+		{
+			this->Pull();
+		}
+		
+		this->_samplesConverted->read(&theSample, 1);
+		theSample >>= 1; // Samples from CoreAudio are 8-bit, so we need to convert the sample to 7-bit
+	}
+	
+	return theSample;
+}
+
 void CoreAudioInput::SetCallbackHardwareStateChanged(CoreAudioInputHardwareStateChangedCallback callbackFunc, void *inParam1, void *inParam2)
 {
 	this->_hwStateChangedCallbackFunc = callbackFunc;

desmume/src/frontend/cocoa/coreaudiosound.h

@@ -22,8 +22,9 @@
 #include <AudioUnit/AudioUnit.h>
 #include <AudioToolbox/AudioToolbox.h>
 #include <libkern/OSAtomic.h>
-#include "ringbuffer.h"
 
+#include "ringbuffer.h"
+#include "audiosamplegenerator.h"
 
 struct CoreAudioInputDeviceInfo
 {
@@ -44,7 +45,7 @@ typedef void (*CoreAudioInputHardwareStateChangedCallback)(CoreAudioInputDeviceI
 
 typedef void (*CoreAudioInputHardwareGainChangedCallback)(float normalizedGain, void *inParam1, void *inParam2);
 
-class CoreAudioInput
+class CoreAudioInput : public AudioGenerator
 {
 private:
 	OSSpinLock *_spinlockAUHAL;
@@ -65,6 +66,8 @@ private:
 	AudioBufferList *_convertBufferList;
 	UInt32 _captureFrames;
 	
+	RingBuffer *_samplesConverted;
+	
 	float _inputGainNormalized;
 	AudioUnitElement _inputElement;
 	
@@ -80,10 +83,9 @@ public:
 	AudioTimeStamp _timeStamp;
 	AudioBufferList *_captureBufferList;
 	RingBuffer *_samplesCaptured;
-	RingBuffer *_samplesConverted;
 	
 	CoreAudioInput();
-	~CoreAudioInput();
+	virtual ~CoreAudioInput();
 	
 	void Start();
 	void Stop();
@@ -93,13 +95,16 @@ public:
 	bool IsHardwareLocked() const;
 	bool GetPauseState() const;
 	void SetPauseState(bool pauseState);
-	float GetGain() const;
+	float GetNormalizedGain() const;
-	void SetGain(float normalizedGain);
+	void SetGainAsNormalized(float normalizedGain);
 	
 	void UpdateHardwareGain(float normalizedGain);
 	void UpdateHardwareLock();
 	void SetCallbackHardwareStateChanged(CoreAudioInputHardwareStateChangedCallback callbackFunc, void *inParam1, void *inParam2);
 	void SetCallbackHardwareGainChanged(CoreAudioInputHardwareGainChangedCallback callbackFunc, void *inParam1, void *inParam2);
+	
+	virtual size_t resetSamples();
+	virtual uint8_t generateSample();
 };
 
 class CoreAudioOutput

desmume/src/frontend/cocoa/userinterface/EmuControllerDelegate.mm

@@ -810,7 +810,6 @@
 	const BOOL muteState = [CocoaDSUtil getIBActionSenderButtonStateBool:sender];
 	CocoaDSCore *cdsCore = (CocoaDSCore *)[cdsCoreController content];
 	[[cdsCore cdsController] setHardwareMicMute:muteState];
-	[[cdsCore cdsController] setHardwareMicPause:([cdsCore coreState] != ExecutionBehavior_Run)];
 	[self updateMicStatusIcon];
 }
 
@@ -1911,7 +1910,6 @@
 	
 	[cdsCore setSlot1StatusText:NSSTRING_STATUS_EMULATION_NOT_RUNNING];
 	[[cdsCore cdsController] reset];
-	[[cdsCore cdsController] updateMicLevel];
 	
 	result = YES;
 	
@@ -2016,7 +2014,11 @@
 	{
 		if ([cdsController isHardwareMicAvailable])
 		{
-			if ([cdsController isHardwareMicInClip])
+			if ([cdsController hardwareMicPause])
+			{
+				micIcon = iconMicDisabled;
+			}
+			else if ([cdsController isHardwareMicInClip])
 			{
 				micIcon = iconMicInClip;
 			}

desmume/src/frontend/cocoa/userinterface/appDelegate.mm

@@ -186,7 +186,7 @@
 	
 	// Init the DS controller.
 	[[newCore cdsController] setDelegate:emuControl];
-	[[newCore cdsController] setHardwareMicEnabled:YES];
+	[[newCore cdsController] startHardwareMicDevice];
 	
 	// Init the DS speakers.
 	CocoaDSSpeaker *newSpeaker = [[[CocoaDSSpeaker alloc] init] autorelease];
@@ -207,7 +207,6 @@
 
 - (void)applicationDidFinishLaunching:(NSNotification *)aNotification
 {
-	CocoaDSCore *cdsCore = (CocoaDSCore *)[cdsCoreController content];
 	EmuControllerDelegate *emuControl = (EmuControllerDelegate *)[emuControlController content];
 	
 	// Determine if the app was run for the first time.
@@ -237,11 +236,10 @@
 	[[inputPrefsView inputPrefOutlineView] expandItem:nil expandChildren:YES];
 	[[inputPrefsView inputProfileMenu] selectItemAtIndex:0];
 	
-	// Make sure that the mic is paused to start with.
+	// Initialize the microphone status icon.
-	[[cdsCore cdsController] setHardwareMicPause:YES];
 	[emuControl updateMicStatusIcon];
 	
-	//Bring the application to the front
+	// Bring the application to the front
 	[NSApp activateIgnoringOtherApps:YES];
 	[self restoreDisplayWindowStates];