MHA IO interface class for ALSA IO. More...

Inheritance diagram for io_alsa_t:

Public Member Functions
	io_alsa_t (unsigned int fragsize, float samplerate, IOProcessEvent_t proc_event, void proc_handle, IOStartedEvent_t start_event, void start_handle, IOStoppedEvent_t stop_event, void *stop_handle)
	Constructor, receives the callback handles to interact with the MHA framework. More...

template<typename T = void>
void	prepare (int, int)
	Called after the framework has perpared the processing plugins and the number of input and output channels are fixed. More...

void	release ()
	MHA framework leaves prepared state. More...

void	start ()
	MHA framework calls this function when signal processing should start. More...

void	stop ()
	MHA framework calls this function when signal processing should stop. More...

template<>
void	prepare (int nch_in, int nch_out)

Public Member Functions inherited from MHAParser::parser_t
	parser_t (const std::string &help_text="")
	Construct detached node to be used in the configuration tree. More...

	~parser_t ()

void	insert_item (const std::string &, base_t *)
	Register a parser item into this sub-parser. More...

void	remove_item (const std::string &)
	Remove an item by name. More...

void	force_remove_item (const std::string &)
	Remove an item by name. More...

void	remove_item (const base_t *)
	Remove an item by address. More...

Public Member Functions inherited from MHAParser::base_t
	base_t (const std::string &)
	Constructor for base class of all parser nodes. More...

	base_t (const base_t &)
	Copy constructor for base_t. More...

base_t &	operator= (const base_t &)=default

	base_t (base_t &&)=delete

base_t &	operator= (base_t &&)=delete

virtual	~base_t ()

virtual std::string	parse (const std::string &)
	Causes this node to process a command in the openMHA configuration language. More...

virtual void	parse (const char , char , unsigned int)
	This function parses a command and writes the parsing result into a C character array. More...

virtual void	parse (const std::vector< std::string > &, std::vector< std::string > &)

virtual std::string	query_perm (const std::string &)

virtual std::string	query_range (const std::string &)

std::string	query_version (const std::string &)

std::string	query_id (const std::string &)

std::string	query_subst (const std::string &)

std::string	query_addsubst (const std::string &)

std::string	query_help (const std::string &)

std::string	query_cmds (const std::string &)

void	set_node_id (const std::string &)
	Set the identification string of this parser node. More...

void	set_help (const std::string &)
	Set the help comment of a variable or parser. More...

void	add_parent_on_insert (parser_t *, std::string)

void	rm_parent_on_remove (parser_t *)

const std::string &	fullname () const
	Return the full dot-separated path name of this parser node in the openMHA configuration tree. More...

Static Public Member Functions
static void *	thread_start (void *h)
	MHAIOAlsa uses a separate thread that calls the alsa read and write functions to read and write audio samples, these functions are blocking until samples can be read or written. More...

Private Member Functions
void	process ()

Private Attributes
bool	b_process

unsigned int	fw_fragsize

unsigned int	fw_samplerate

IOProcessEvent_t	proc_event

void *	proc_handle

IOStartedEvent_t	start_event

void *	start_handle

IOStoppedEvent_t	stop_event

void *	stop_handle

alsa_base_t *	dev_in

alsa_base_t *	dev_out

pthread_t	proc_thread

alsa_dev_par_parser_t	p_in

alsa_dev_par_parser_t	p_out

MHAParser::bool_t	pcmlink

MHAParser::int_t	priority

MHAParser::kw_t	format

MHAParser::int_mon_t	alsa_start_counter

MHAEvents::patchbay_t< io_alsa_t >	patchbay

Additional Inherited Members
Public Attributes inherited from MHAParser::base_t
MHAEvents::emitter_t	writeaccess
	Event emitted on write access. More...

MHAEvents::emitter_t	valuechanged
	Event emitted if the value has changed. More...

MHAEvents::emitter_t	readaccess
	Event emitted on read access. More...

MHAEvents::emitter_t	prereadaccess
	Event emitted on read access, before the data field is accessed. More...

Protected Member Functions inherited from MHAParser::parser_t
std::string	op_subparse (expression_t &)

std::string	op_setval (expression_t &)

std::string	op_query (expression_t &)

std::string	query_type (const std::string &)

std::string	query_dump (const std::string &)

std::string	query_entries (const std::string &)

std::string	query_readfile (const std::string &)

std::string	query_savefile (const std::string &)

std::string	query_savefile_compact (const std::string &)

std::string	query_savemons (const std::string &)

std::string	query_val (const std::string &)

std::string	query_listids (const std::string &)

void	set_id_string (const std::string &)

bool	has_entry (const std::string &)

Protected Member Functions inherited from MHAParser::base_t
void	activate_query (const std::string &, query_t)

void	notify ()

Protected Attributes inherited from MHAParser::base_t
query_map_t	queries

bool	data_is_initialized

Detailed Description

MHA IO interface class for ALSA IO.

Constructor & Destructor Documentation

◆ io_alsa_t()

io_alsa_t::io_alsa_t	(	unsigned int	fragsize,
		float	samplerate,
		IOProcessEvent_t	proc_event,
		void *	proc_handle,
		IOStartedEvent_t	start_event,
		void *	start_handle,
		IOStoppedEvent_t	stop_event,
		void *	stop_handle
	)

Constructor, receives the callback handles to interact with the MHA framework.

Member Function Documentation

◆ prepare() [1/2]

template<typename T >

void io_alsa_t::prepare	(	int	nch_in,
		int	nch_out
	)

Called after the framework has perpared the processing plugins and the number of input and output channels are fixed.

open pcm streams

◆ release()

void io_alsa_t::release ( void )

MHA framework leaves prepared state.

◆ start()

void io_alsa_t::start ( )

MHA framework calls this function when signal processing should start.

◆ stop()

void io_alsa_t::stop ( )

MHA framework calls this function when signal processing should stop.

◆ thread_start()

void * io_alsa_t::thread_start ( void * h )

static

MHAIOAlsa uses a separate thread that calls the alsa read and write functions to read and write audio samples, these functions are blocking until samples can be read or written.

This is the start function of that thread.

◆ process()

void io_alsa_t::process ( void )

private

◆ prepare() [2/2]

template<>

void io_alsa_t::prepare	(	int	nch_in,
		int	nch_out
	)

Member Data Documentation

◆ b_process

bool io_alsa_t::b_process

private

◆ fw_fragsize

unsigned int io_alsa_t::fw_fragsize

private

◆ fw_samplerate

unsigned int io_alsa_t::fw_samplerate

private

◆ proc_event

IOProcessEvent_t io_alsa_t::proc_event

private

◆ proc_handle

void* io_alsa_t::proc_handle

private

◆ start_event

IOStartedEvent_t io_alsa_t::start_event

private

◆ start_handle

void* io_alsa_t::start_handle

private

◆ stop_event

IOStoppedEvent_t io_alsa_t::stop_event

private

◆ stop_handle

void* io_alsa_t::stop_handle

private

◆ dev_in

alsa_base_t* io_alsa_t::dev_in

private

◆ dev_out

alsa_base_t* io_alsa_t::dev_out

private

◆ proc_thread

pthread_t io_alsa_t::proc_thread

private

◆ p_in

alsa_dev_par_parser_t io_alsa_t::p_in

private

◆ p_out

alsa_dev_par_parser_t io_alsa_t::p_out

private

◆ pcmlink

MHAParser::bool_t io_alsa_t::pcmlink

private

◆ priority

MHAParser::int_t io_alsa_t::priority

private

◆ format

MHAParser::kw_t io_alsa_t::format

private

◆ alsa_start_counter

MHAParser::int_mon_t io_alsa_t::alsa_start_counter

private

◆ patchbay

MHAEvents::patchbay_t<io_alsa_t> io_alsa_t::patchbay

private

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

MHAIOalsa.cpp

Public Member Functions

Static Public Member Functions

Private Member Functions

Private Attributes

Additional Inherited Members

Detailed Description

Constructor & Destructor Documentation

◆ io_alsa_t()

Member Function Documentation

◆ prepare() [1/2]

◆ release()

◆ start()

◆ stop()

◆ thread_start()

◆ process()

◆ prepare() [2/2]

Member Data Documentation

◆ b_process

◆ fw_fragsize

◆ fw_samplerate

◆ proc_event

◆ proc_handle

◆ start_event

◆ start_handle

◆ stop_event

◆ stop_handle

◆ dev_in

◆ dev_out

◆ proc_thread

◆ p_in

◆ p_out

◆ pcmlink

◆ priority

◆ format

◆ alsa_start_counter

◆ patchbay