AudioOutputALSA Class Reference

#include <audiooutputalsa.h>

Inheritance diagram for AudioOutputALSA:

Public Member Functions
	AudioOutputALSA (const AudioSettings &settings)
virtual	~AudioOutputALSA ()
virtual int	GetVolumeChannel (int channel) const
virtual void	SetVolumeChannel (int channel, int volume)
Static Public Member Functions
static QMap< QString, QString > *	GetDevices (const char *type)
Protected Member Functions
virtual bool	OpenDevice (void)
virtual void	CloseDevice (void)
virtual void	WriteAudio (uchar *aubuf, int size)
virtual int	GetBufferedOnSoundcard (void) const
	Return the size in bytes of frames currently in the audio buffer adjusted with the audio playback latency.
AudioOutputSettings *	GetOutputSettings (bool passthrough)
Private Member Functions
int	TryOpenDevice (int open_mode, int try_ac3)
int	GetPCMInfo (int &card, int &device, int &subdevice)
bool	SetPreallocBufferSize (int size)
bool	IncPreallocBufferSize (int requested, int buffer_time)
int	SetParameters (snd_pcm_t *handle, snd_pcm_format_t format, uint channels, uint rate, uint buffer_time, uint period_time)
	Set the various ALSA audio parameters.
bool	OpenMixer (void)
Private Attributes
snd_pcm_t *	pcm_handle
int	pbufsize
int	m_card
int	m_device
int	m_subdevice
QMutex	killAudioLock
QString	m_lastdevice
struct {
QString device
QString control
snd_mixer_t * handle
snd_mixer_elem_t * elem
long volmin
long volmax
long volrange
}	m_mixer

Detailed Description

Definition at line 14 of file audiooutputalsa.h.

Constructor & Destructor Documentation

AudioOutputALSA::AudioOutputALSA ( const AudioSettings & settings )

Definition at line 31 of file audiooutputalsa.cpp.

AudioOutputALSA::~AudioOutputALSA ( ) [virtual]

Definition at line 107 of file audiooutputalsa.cpp.

Member Function Documentation

int AudioOutputALSA::GetVolumeChannel ( int channel ) const [virtual]

Implements VolumeBase.

Definition at line 759 of file audiooutputalsa.cpp.

void AudioOutputALSA::SetVolumeChannel	(	int	channel,
		int	volume
	)			`[virtual]`

Implements VolumeBase.

Definition at line 794 of file audiooutputalsa.cpp.

Referenced by OpenMixer().

QMap< QString, QString > * AudioOutputALSA::GetDevices ( const char * type ) [static]

Definition at line 918 of file audiooutputalsa.cpp.

Referenced by AudioOutput::GetOutputList(), GetOutputSettings(), and AudioOutput::OpenAudio().

bool AudioOutputALSA::OpenDevice ( void ) [protected, virtual]

Implements AudioOutputBase.

Definition at line 403 of file audiooutputalsa.cpp.

void AudioOutputALSA::CloseDevice ( void ) [protected, virtual]

Implements AudioOutputBase.

Definition at line 463 of file audiooutputalsa.cpp.

Referenced by OpenDevice(), and SetPreallocBufferSize().

void AudioOutputALSA::WriteAudio	(	uchar *	aubuf,
		int	size
	)			`[protected, virtual]`

Implements AudioOutputBase.

Definition at line 506 of file audiooutputalsa.cpp.

int AudioOutputALSA::GetBufferedOnSoundcard ( void ) const [protected, virtual]

Return the size in bytes of frames currently in the audio buffer adjusted with the audio playback latency.

Implements AudioOutputBase.

Definition at line 589 of file audiooutputalsa.cpp.

AudioOutputSettings * AudioOutputALSA::GetOutputSettings ( bool passthrough ) [protected, virtual]

Reimplemented from AudioOutputBase.

Definition at line 290 of file audiooutputalsa.cpp.

int AudioOutputALSA::TryOpenDevice	(	int	open_mode,
		int	try_ac3
	)			`[private]`

Definition at line 112 of file audiooutputalsa.cpp.

Referenced by GetOutputSettings(), and OpenDevice().

int AudioOutputALSA::GetPCMInfo	(	int &	card,
		int &	device,
		int &	subdevice
	)			`[private]`

Definition at line 148 of file audiooutputalsa.cpp.

Referenced by IncPreallocBufferSize(), and SetPreallocBufferSize().

bool AudioOutputALSA::SetPreallocBufferSize ( int size ) [private]

Definition at line 190 of file audiooutputalsa.cpp.

Referenced by IncPreallocBufferSize().

bool AudioOutputALSA::IncPreallocBufferSize	(	int	requested,
		int	buffer_time
	)			`[private]`

Definition at line 230 of file audiooutputalsa.cpp.

Referenced by OpenDevice().

int AudioOutputALSA::SetParameters	(	snd_pcm_t *	handle,
		snd_pcm_format_t	format,
		uint	channels,
		uint	rate,
		uint	buffer_time,
		uint	period_time
	)			`[inline, private]`