AlsaAudioDriver Class Reference

#include <AlsaAudioDriver.h>

Inheritance diagram for AlsaAudioDriver:

Public Member Functions
	AlsaAudioDriver (audioProcessCallback processCallback)
	~AlsaAudioDriver ()
virtual int	connect () override
virtual void	disconnect () override
virtual unsigned	getBufferSize () override
virtual float *	getOut_L () override
virtual float *	getOut_R () override
virtual unsigned	getSampleRate () override
virtual int	getXRuns () const override
	Get the number of XRuns that occurred since the audio driver has started.
virtual int	init (unsigned nBufferSize) override
Public Member Functions inherited from Object< AlsaAudioDriver >
	Object ()
	Object (const Object< AlsaAudioDriver > &other)
Public Member Functions inherited from Base
	Base ()
	Base (const Base &other)
virtual const char *	class_name () const
void	Print (bool bShort=true) const
	Prints content of toQString() via DEBUGLOG.
virtual QString	toQString (const QString &sPrefix="", bool bShort=true) const
	Formatted string version for debugging purposes.
Public Member Functions inherited from AudioOutput
	AudioOutput ()=default
virtual	~AudioOutput ()
virtual int	getLatency ()
	Approximate audio latency (in frames) A reasonable approximation is the buffer time on most audio systems.
Public Member Functions inherited from Object< AudioOutput >
	Object ()
	Object (const Object< AudioOutput > &other)

Static Public Member Functions
static QStringList	getDevices ()
	Use the name hints to build a list of potential device names.
Static Public Member Functions inherited from Base
static const char *	_class_name ()
	return the class name
static QString	base_clock (const QString &sMsg)
	Measures the current time and stores it in __last_clock.
static QString	base_clock_in (const QString &sMsg)
static int	bootstrap (Logger *logger, bool count=false)
	must be called before any Object instantiation !
static bool	count_active ()
static int	getAliveObjectCount ()
static object_map_t	getObjectMap ()
static Logger *	logger ()
	return the logger instance
static int	objects_count ()
static void	printObjectMapDiff (object_map_t map)
	Creates the difference between a snapshot of the object map and its current state and prints it to std::cout.
static void	set_count (bool flag)
	enable/disable class instances counting
static void	write_objects_map_to (std::ostream &out, object_map_t *map=nullptr)
	output the full objects map to a given ostream
static void	write_objects_map_to_cerr ()
	output objects map to stderr
Static Public Member Functions inherited from AudioOutput
static QStringList	getDevices ()

Data Fields
bool	m_bIsRunning
unsigned long	m_nBufferSize
int	m_nXRuns
float *	m_pOut_L
float *	m_pOut_R
snd_pcm_t *	m_pPlayback_handle
audioProcessCallback	m_processCallback
QString	m_sAlsaAudioDevice

Private Attributes
unsigned int	m_nSampleRate

Additional Inherited Members
Static Public Attributes inherited from Base
static QString	sPrintIndention = " "
	String used to format the debugging string output of some core classes.
Protected Member Functions inherited from Object< AlsaAudioDriver >
	~Object ()
Protected Member Functions inherited from Base
	~Base ()
Protected Member Functions inherited from Object< AudioOutput >
	~Object ()
Static Protected Member Functions inherited from Base
static void	registerClass (const char *name, const atomic_obj_cpt_t *counters)
Static Protected Attributes inherited from Base
static bool	__count = false
	should we count class instances
static timeval	__last_clock = { 0, 0 }
static Logger *	__logger = nullptr

Detailed Description

Definition at line 37 of file AlsaAudioDriver.h.

Constructor & Destructor Documentation

AlsaAudioDriver()

AlsaAudioDriver

(

audioProcessCallback

processCallback

)

Definition at line 183 of file AlsaAudioDriver.cpp.

~AlsaAudioDriver()

~AlsaAudioDriver

(

)

Definition at line 197 of file AlsaAudioDriver.cpp.

Member Function Documentation

connect()

int connect ( )

overridevirtual

Implements AudioOutput.

Definition at line 216 of file AlsaAudioDriver.cpp.

disconnect()

void disconnect ( )

overridevirtual

Implements AudioOutput.

Definition at line 367 of file AlsaAudioDriver.cpp.

getBufferSize()

unsigned getBufferSize ( )

overridevirtual

Implements AudioOutput.

Definition at line 384 of file AlsaAudioDriver.cpp.

getDevices()

QStringList getDevices ( )

static

Use the name hints to build a list of potential device names.

Definition at line 152 of file AlsaAudioDriver.cpp.

getOut_L()

float * getOut_L ( )

overridevirtual

Implements AudioOutput.

Definition at line 394 of file AlsaAudioDriver.cpp.

getOut_R()

float * getOut_R ( )

overridevirtual

Implements AudioOutput.

Definition at line 399 of file AlsaAudioDriver.cpp.

getSampleRate()

unsigned getSampleRate ( )

overridevirtual

Implements AudioOutput.

Definition at line 389 of file AlsaAudioDriver.cpp.

getXRuns()

virtual int getXRuns ( ) const

inlineoverridevirtual

Get the number of XRuns that occurred since the audio driver has started.

Reimplemented from AudioOutput.

Definition at line 62 of file AlsaAudioDriver.h.

init()

int init ( unsigned nBufferSize )

overridevirtual

Implements AudioOutput.

Definition at line 208 of file AlsaAudioDriver.cpp.

Field Documentation

m_bIsRunning

bool m_bIsRunning

Definition at line 42 of file AlsaAudioDriver.h.

m_nBufferSize

unsigned long m_nBufferSize

Definition at line 43 of file AlsaAudioDriver.h.

m_nSampleRate

unsigned int m_nSampleRate

private

Definition at line 66 of file AlsaAudioDriver.h.

m_nXRuns

int m_nXRuns

Definition at line 48 of file AlsaAudioDriver.h.

m_pOut_L

float* m_pOut_L

Definition at line 44 of file AlsaAudioDriver.h.

m_pOut_R

float* m_pOut_R

Definition at line 45 of file AlsaAudioDriver.h.

m_pPlayback_handle

snd_pcm_t* m_pPlayback_handle

Definition at line 41 of file AlsaAudioDriver.h.

m_processCallback

audioProcessCallback m_processCallback

Definition at line 47 of file AlsaAudioDriver.h.

m_sAlsaAudioDevice

QString m_sAlsaAudioDevice

Definition at line 46 of file AlsaAudioDriver.h.