Wrapper for OSS device that use file descriptor to communicate. More...

#include <MpOss.h>

Inheritance diagram for MpOss:

Collaboration diagram for MpOss:

Public Member Functions
Creators
	MpOss ()
	Constructor. More...

	~MpOss ()
	Destructor. More...

Manipulators
OsStatus	setInputDevice (MpidOss *pIDD)
	Connect MpidOss class driver. More...

OsStatus	setOutputDevice (MpodOss *pODD)
	Connect MpodOss class driver. More...

OsStatus	freeInputDevice ()
	Disconnect Input driver. More...

OsStatus	freeOutputDevice ()
	Disconnect Output driver. More...

OsStatus	attachReader ()
	Enable input device. More...

OsStatus	attachWriter ()
	Enable output device. More...

OsStatus	detachReader ()
	Disable input device. More...

OsStatus	detachWriter ()
	Disable output device. More...

Inquiry
UtlBoolean	isDeviceValid ()
	Inquire if the device is valid. More...

UtlBoolean	isReaderAttached ()
	Inquire if the input device is connected. More...

UtlBoolean	isWriterAttached ()
	Inquire if the output device is connected. More...

UtlBoolean	isDevCapBatch ()

UtlBoolean	isDevCapDuplex ()

UtlBoolean	isDevCapMmap ()

UtlBoolean	isDevCapTrigger ()

UtlBoolean	isNotUsed ()
	Inquire if OSS device is free, i.e. neither input nor output is connected. More...

Protected Member Functions
OsStatus	initDevice (const char *devname)
	Pre initializations for OSS device. More...

OsStatus	initDeviceFinal (unsigned samplesPerSec, unsigned samplerPerFrame)
	Final initializations for OSS device. More...

OsStatus	freeDevice ()
	Free OSS device. More...

OsStatus	setSampleRate (unsigned samplesPerSec, unsigned samplerPerFrame)
	Because OSS device works in duplex mode we must ensure that input and output driver use one sample rate and perfrom final init. More...

OsStatus	doInput (char *buffer, int size)
	Perform input operation of OSS device. More...

OsStatus	doOutput (const char *buffer, int size)
	Perform output operation of OSS device. More...

OsStatus	doInputRs (MpAudioSample *buffer, unsigned size)
	Perform input operation of OSS device with siutable resampler. More...

OsStatus	doOutputRs (const MpAudioSample *buffer, unsigned size)
	Perform output operation of OSS device with siutable resampler. More...

void	noMoreNeeded ()
	Deinitialization and freeing sequences. More...

void	soundIoThread ()
	Thread subroutine. More...

Protected Attributes
int	mfdDevice
	The fd of the POSIX device (e.g. /dev/dsp) More...

UtlBoolean	mbReadCap
	Device is able to play audio. More...

UtlBoolean	mbWriteCap
	Device is able to capture audio. More...

MpidOss *	mReader
	Input driver. More...

MpodOss *	mWriter
	Output driver. More...

int	mDeviceCap
	Device capabilities. More...

volatile UtlBoolean	mStReader
	Input device is enabled. More...

volatile UtlBoolean	mStWriter
	Output device is enabled. More...

volatile UtlBoolean	mStShutdown
	Thread exit flag. More...

volatile UtlBoolean	mModeChanged
	IO settings has changed. More...

unsigned	mUsedSamplesPerSec
	Used samples rate either for IO. More...

unsigned	mUsedSamplesPerFrame
	Used frame size for IO. More...

MpAudioSample *	mResamplerBuffer
	Buffer for conversions. More...

UtlBoolean	mStereoOps
	Use stereo output. More...

pthread_t	mIoThread
	Internal IO thread. More...

sem_t	mSleepSem
	Control IO thread sleeping. More...

sem_t	mSignalSem
	Use for parameters synchronization. More...

Private Member Functions
void	threadIoStatusChanged ()

void	threadWakeUp ()

void	threadKill ()

UtlBoolean	ossSetTrigger (bool turnOn)

UtlBoolean	ossReset ()

Static Private Member Functions
static void *	soundCardIoWrapper (void *arg)
	Thread subroutine. More...

Friends
class	MpidOss

class	MpodOss

Detailed Description

Wrapper for OSS device that use file descriptor to communicate.

Constructor & Destructor Documentation

MpOss ( )

Constructor.

~MpOss ( )

Destructor.

Member Function Documentation

OsStatus setInputDevice ( MpidOss * pIDD )

Connect MpidOss class driver.

OsStatus setOutputDevice ( MpodOss * pODD )

Connect MpodOss class driver.

OsStatus freeInputDevice ( )

Disconnect Input driver.

OsStatus freeOutputDevice ( )

Disconnect Output driver.

OsStatus attachReader ( )

Enable input device.

OsStatus attachWriter ( )

Enable output device.

OsStatus detachReader ( )

Disable input device.

OsStatus detachWriter ( )

Disable output device.

UtlBoolean isDeviceValid ( )

inline

Inquire if the device is valid.

UtlBoolean isReaderAttached ( )

inline

Inquire if the input device is connected.

UtlBoolean isWriterAttached ( )

inline

Inquire if the output device is connected.

UtlBoolean isDevCapBatch ( )

inline

UtlBoolean isDevCapDuplex ( )

inline

UtlBoolean isDevCapMmap ( )

inline

UtlBoolean isDevCapTrigger ( )

inline

UtlBoolean isNotUsed ( )

inline

Inquire if OSS device is free, i.e. neither input nor output is connected.

OsStatus initDevice ( const char * devname )

protected

Pre initializations for OSS device.

OsStatus initDeviceFinal	(	unsigned	samplesPerSec,
		unsigned	samplerPerFrame
	)

protected

Final initializations for OSS device.

OsStatus freeDevice ( )

protected

Free OSS device.

OsStatus setSampleRate	(	unsigned	samplesPerSec,
		unsigned	samplerPerFrame
	)

protected

Because OSS device works in duplex mode we must ensure that input and output driver use one sample rate and perfrom final init.

OsStatus doInput	(	char *	buffer,
		int	size
	)

protected

Perform input operation of OSS device.

OsStatus doOutput	(	const char *	buffer,
		int	size
	)

protected

Perform output operation of OSS device.

OsStatus doInputRs	(	MpAudioSample *	buffer,
		unsigned	size
	)

protected

Perform input operation of OSS device with siutable resampler.

OsStatus doOutputRs	(	const MpAudioSample *	buffer,
		unsigned	size
	)

protected

Perform output operation of OSS device with siutable resampler.

void noMoreNeeded ( )

protected

Deinitialization and freeing sequences.

void soundIoThread ( )

protected

Thread subroutine.

void threadIoStatusChanged ( )

private

void threadWakeUp ( )

private

void threadKill ( )

private

UtlBoolean ossSetTrigger ( bool turnOn )

private

UtlBoolean ossReset ( )

private

static void* soundCardIoWrapper ( void * arg )

staticprivate

Thread subroutine.

Friends And Related Function Documentation

friend class MpidOss

friend

friend class MpodOss

friend

Member Data Documentation

int mfdDevice

protected

The fd of the POSIX device (e.g. /dev/dsp)

UtlBoolean mbReadCap

protected

Device is able to play audio.

UtlBoolean mbWriteCap

protected

Device is able to capture audio.

MpidOss* mReader

protected

Input driver.

MpodOss* mWriter

protected

Output driver.

int mDeviceCap

protected

Device capabilities.

volatile UtlBoolean mStReader

protected

Input device is enabled.

volatile UtlBoolean mStWriter

protected

Output device is enabled.

volatile UtlBoolean mStShutdown

protected

Thread exit flag.

volatile UtlBoolean mModeChanged

protected

IO settings has changed.

unsigned mUsedSamplesPerSec

protected

Used samples rate either for IO.

unsigned mUsedSamplesPerFrame

protected

Used frame size for IO.

MpAudioSample* mResamplerBuffer

protected

Buffer for conversions.

UtlBoolean mStereoOps

protected

Use stereo output.

pthread_t mIoThread

protected

Internal IO thread.

sem_t mSleepSem

protected

Control IO thread sleeping.

sem_t mSignalSem

protected

Use for parameters synchronization.

Public Member Functions

Protected Member Functions

Protected Attributes

Private Member Functions

Static Private Member Functions

Friends

Detailed Description

Constructor & Destructor Documentation

Member Function Documentation

Friends And Related Function Documentation

Member Data Documentation