Inheritance diagram for Alsa:

Collaboration diagram for Alsa:

Public Member Functions
	Alsa (ConfigFile *cf, int section)

virtual int	ProcessMessage (QueuePointer &resp_queue, player_msghdr hdr, void data)
	Message handler. More...

Public Member Functions inherited from ThreadedDriver
	ThreadedDriver (ConfigFile *cf, int section, bool overwrite_cmds, size_t queue_maxlen, int interface_)
	Constructor with implicit interface. More...

	ThreadedDriver (ConfigFile *cf, int section, bool overwrite_cmds=true, size_t queue_maxlen=PLAYER_MSGQUEUE_DEFAULT_MAXLEN)
	Constructor for multiple-interface drivers. More...

virtual	~ThreadedDriver ()
	Destructor.

virtual int	Setup ()
	Initialize the driver. More...

virtual int	Shutdown ()
	Finalize the driver. More...

virtual int	Terminate ()
	Terminate the driver. More...

bool	Wait (double TimeOut=0.0)
	Wait for new data to arrive on the driver's queue. More...

virtual void	Update ()
	Update non-threaded drivers. More...

Public Member Functions inherited from Driver
bool	HasSubscriptions ()

virtual void	Publish (player_devaddr_t addr, QueuePointer &queue, uint8_t type, uint8_t subtype, void src=NULL, size_t deprecated=0, double timestamp=NULL, bool copy=true)
	Publish a message via one of this driver's interfaces. More...

virtual void	Publish (player_devaddr_t addr, uint8_t type, uint8_t subtype, void src=NULL, size_t deprecated=0, double timestamp=NULL, bool copy=true)
	Publish a message via one of this driver's interfaces. More...

virtual void	Publish (QueuePointer &queue, player_msghdr_t hdr, void src, bool copy=true)
	Publish a message via one of this driver's interfaces. More...

virtual void	Publish (player_msghdr_t hdr, void src, bool copy=true)
	Publish a message via one of this driver's interfaces. More...

	Driver (ConfigFile *cf, int section, bool overwrite_cmds, size_t queue_maxlen, int interf)
	Constructor for single-interface drivers. More...

	Driver (ConfigFile *cf, int section, bool overwrite_cmds=true, size_t queue_maxlen=PLAYER_MSGQUEUE_DEFAULT_MAXLEN)
	Constructor for multiple-interface drivers. More...

virtual	~Driver ()
	Destructor.

int	GetError ()
	Get last error value. More...

virtual int	Subscribe (player_devaddr_t addr)
	Subscribe to this driver. More...

virtual int	Subscribe (QueuePointer &, player_devaddr_t)
	Subscribe to this driver. More...

virtual int	Unsubscribe (player_devaddr_t addr)
	Unsubscribe from this driver. More...

virtual int	Unsubscribe (QueuePointer &, player_devaddr_t)
	Unsubscribe from this driver. More...

void	ProcessMessages (int maxmsgs)
	Process pending messages. More...

void	ProcessMessages (void)
	Process pending messages. More...

virtual int	ProcessInternalMessages (QueuePointer &resp_queue, player_msghdr hdr, void data)
	Internal message handler. More...

virtual bool	RegisterProperty (const char key, Property property, ConfigFile *cf, int section)
	Property registration. More...

virtual bool	RegisterProperty (Property property, ConfigFile cf, int section)
	Property registration. More...

Private Member Functions
virtual void	Main (void)
	Main method for driver thread. More...

virtual int	MainSetup (void)
	Sets up the resources needed by the driver thread.

virtual void	MainQuit (void)
	Cleanup method for driver thread (called when main exits) More...

void	SendStateMessage (void)

bool	AddStoredSample (StoredSample *newSample)

bool	AddStoredSample (player_audio_wav_t *waveData)

bool	AddStoredSample (const char *filePath)

StoredSample *	GetSampleAtIndex (int index)

void	ClearQueue (void)

bool	AddToQueue (QueueItem *newItem)

bool	AddToQueue (player_audio_wav_t *waveData)

bool	AddToQueue (AudioSample *sample)

bool	AddSilence (uint32_t time, AudioSample *format)

void	AdvanceQueue (void)

bool	SetupPlayBack (void)

bool	SetPBParams (AudioSample *sample)

void	PlaybackCallback (int numFrames)

bool	SetupRecord (void)

bool	SetRecParams (void)

bool	SetupRecordBuffer (uint32_t length)

void	RecordCallback (int numFrames)

void	HandleRecordedData (void)

void	PublishRecordedData (void)

void	StartPlayback (void)

void	StopPlayback (void)

void	StartRecording (void)

void	StopRecording (void)

bool	SetupMixer (void)

bool	EnumMixerElements (void)

bool	EnumElementCaps (MixerElement *element)

MixerElement *	SplitElements (MixerElement *elements, uint32_t &count)

MixerElement *	FilterElements (MixerElement *elements, uint32_t &count)

void	CleanUpMixerElements (MixerElement *elements, uint32_t count)

void	MixerDetailsToPlayer (player_audio_mixer_channel_list_detail_t *dest)

void	MixerLevelsToPlayer (player_audio_mixer_channel_list_t *dest)

void	SetElementLevel (uint32_t index, float level)

void	SetElementSwitch (uint32_t index, player_bool_t active)

void	PublishMixerData (void)

float	LevelToPlayer (long min, long max, long level)

long	LevelFromPlayer (long min, long max, float level)

void	PrintMixerElements (MixerElement *elements, uint32_t count)

int	HandleWavePlayCmd (player_audio_wav_t *waveData)

int	HandleSamplePlayCmd (player_audio_sample_item_t *data)

int	HandleRecordCmd (player_bool_t *data)

int	HandleMixerChannelCmd (player_audio_mixer_channel_list_t *data)

int	HandleSampleLoadReq (player_audio_sample_t *data, QueuePointer &resp_queue)

int	HandleSampleRetrieveReq (player_audio_sample_t *data, QueuePointer &resp_queue)

int	HandleSampleRecordReq (player_audio_sample_rec_req_t *data, QueuePointer &resp_queue)

int	HandleMixerChannelListReq (player_audio_mixer_channel_list_detail_t *data, QueuePointer &resp_queue)

int	HandleMixerChannelLevelReq (player_audio_mixer_channel_list_t *data, QueuePointer &resp_queue)

Private Attributes
bool	useQueue

uint8_t	debugLevel

char **	mixerFilters

bool	mixerFilterExact

char *	pbDevice

char *	mixerDevice

char *	recDevice

uint32_t	cfgPBPeriodTime

uint32_t	cfgPBBufferTime

uint32_t	silenceTime

uint32_t	cfgRecBufferTime

uint32_t	cfgRecStoreTime

uint32_t	cfgRecPeriodTime

uint8_t	recNumChannels

uint32_t	recSampleRate

uint8_t	recBits

snd_pcm_t *	pbHandle

int	numPBFDs

struct pollfd *	pbFDs

uint32_t	actPBBufferTime

uint32_t	actPBPeriodTime

snd_pcm_uframes_t	pbPeriodSize

uint8_t *	periodBuffer

snd_pcm_t *	recHandle

int	numRecFDs

struct pollfd *	recFDs

uint32_t	actRecBufferTime

uint32_t	actRecPeriodTime

snd_pcm_uframes_t	recPeriodSize

snd_mixer_t *	mixerHandle

MixerElement *	mixerElements

uint32_t	numElements

int	nextSampleIdx

StoredSample *	samplesHead

StoredSample *	samplesTail

QueueItem *	queueHead

QueueItem *	queueTail

PBState	playState

PBState	recState

uint32_t	recDataLength

uint32_t	recDataOffset

uint8_t *	recData

int	recDest

Additional Inherited Members
Public Attributes inherited from Driver
QueuePointer	ret_queue
	Last requester's queue. More...

player_devaddr_t	device_addr
	Default device address (single-interface drivers)

int	entries
	Total number of entries in the device table using this driver. More...

bool	alwayson
	Always on flag. More...

QueuePointer	InQueue
	Queue for all incoming messages for this driver.

Protected Member Functions inherited from ThreadedDriver
virtual void	StartThread (void)

virtual void	StopThread (void)
	Cancel (and wait for termination) of the driver thread. More...

void	TestCancel ()
	enable thread cancellation and test for cancellation More...

Protected Member Functions inherited from Driver
int	AddInterface (player_devaddr_t addr)
	Add an interface. More...

int	AddInterface (player_devaddr_t addr, ConfigFile cf, int section, int code, const char *key=NULL)
	Add an interface. More...

void	SetError (int code)
	Set/reset error code.

int	AddFileWatch (int fd, bool ReadWatch=true, bool WriteWatch=false, bool ExceptWatch=true)
	Wake up the driver if the specified event occurs on the file descriptor.

int	RemoveFileWatch (int fd, bool ReadWatch=true, bool WriteWatch=false, bool ExceptWatch=true)
	Remove a previously added watch, call with the same arguments as when adding the watch.

virtual void	Lock (void)
	Lock access between the server and driver threads. More...

virtual void	Unlock (void)
	Unlock access to driver internals. More...

virtual void	SubscriptionLock (void)
	Lock to protect the subscription count for the driver.

virtual void	SubscriptionUnlock (void)
	Unlock to protect the subscription count for the driver. More...

Static Protected Member Functions inherited from ThreadedDriver
static void *	DummyMain (void *driver)
	Dummy main (just calls real main). More...

static void	DummyMainQuit (void *driver)
	Dummy main cleanup (just calls real main cleanup). More...

Member Function Documentation

◆ Main()

void Alsa::Main ( void )

privatevirtual

Main method for driver thread.

drivers have their own thread of execution, created using StartThread(); this is the entry point for the driver thread, and must be overloaded by all threaded drivers.

Implements ThreadedDriver.

References player_audio_mixer_channel::active, player_audio_mixer_channel::amplitude, player_audio_mixer_channel_list::channels, player_audio_mixer_channel_list::channels_count, Driver::device_addr, MessageQueue::Empty(), player_audio_mixer_channel::index, player_audio_sample::index, player_audio_sample_item::index, player_audio_sample_rec_req::index, Driver::InQueue, player_audio_sample_rec_req::length, PLAYER_AUDIO_DATA_STATE, PLAYER_AUDIO_REQ_MIXER_CHANNEL_LEVEL, PLAYER_AUDIO_REQ_MIXER_CHANNEL_LIST, PLAYER_AUDIO_REQ_SAMPLE_LOAD, PLAYER_AUDIO_REQ_SAMPLE_REC, PLAYER_AUDIO_REQ_SAMPLE_RETRIEVE, PLAYER_AUDIO_STATE_PLAYING, PLAYER_AUDIO_STATE_RECORDING, PLAYER_AUDIO_STATE_STOPPED, PLAYER_ERROR, PLAYER_ERROR1, PLAYER_ERROR2, PLAYER_MSGTYPE_DATA, PLAYER_MSGTYPE_RESP_ACK, PLAYER_WARN, PLAYER_WARN1, Driver::ProcessMessages(), Driver::Publish(), player_audio_sample::sample, player_bool::state, and player_audio_state::state.

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◆ MainQuit()

void Alsa::MainQuit ( void )

privatevirtual

Cleanup method for driver thread (called when main exits)

Overload this method and to do additional cleanup when the driver thread exits.

Reimplemented from ThreadedDriver.

References PLAYER_WARN.

◆ ProcessMessage()

int Alsa::ProcessMessage	(	QueuePointer &	resp_queue,
		player_msghdr *	hdr,
		void *	data
	)

virtual

Message handler.

This function is called once for each message in the incoming queue. Reimplement it to provide message handling. Return 0 if you handled the message and -1 otherwise

Parameters

resp_queue	The queue to which any response should go.
hdr	The message header
data	The message body

Reimplemented from Driver.

References Driver::device_addr, Message::MatchMessage(), PLAYER_AUDIO_CMD_MIXER_CHANNEL, PLAYER_AUDIO_CMD_SAMPLE_PLAY, PLAYER_AUDIO_CMD_WAV_PLAY, PLAYER_AUDIO_CMD_WAV_STREAM_REC, PLAYER_AUDIO_REQ_MIXER_CHANNEL_LEVEL, PLAYER_AUDIO_REQ_MIXER_CHANNEL_LIST, PLAYER_AUDIO_REQ_SAMPLE_LOAD, PLAYER_AUDIO_REQ_SAMPLE_REC, PLAYER_AUDIO_REQ_SAMPLE_RETRIEVE, PLAYER_CAPABILITIES_REQ, PLAYER_MSGTYPE_CMD, and PLAYER_MSGTYPE_REQ.

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The documentation for this class was generated from the following files:

alsa.h
alsa.cc

Public Member Functions

Private Member Functions

Private Attributes

Additional Inherited Members

Member Function Documentation

◆ Main()

◆ MainQuit()

◆ ProcessMessage()