#include <zita-alsa-pcmi.h>

Public Types
enum	{ DEBUG_INIT = 0x001 , DEBUG_STAT = 0x002 , DEBUG_WAIT = 0x004 , DEBUG_DATA = 0x008 , DEBUG_ALL = 0x00f , FORCE_16B = 0x100 , FORCE_2CH = 0x200 , TRY_INTLVD = 0x400 }

Public Member Functions
	Alsa_pcmi (const char play_name, const char capt_name, const char *ctrl_name, unsigned int rate, unsigned int frsize, unsigned int play_nfrags, unsigned int capt_nfrags, unsigned int debug=0)

	~Alsa_pcmi (void)

void	printinfo (void)

int	pcm_start (void)

int	pcm_stop (void)

int	pcm_idle (int len)

snd_pcm_sframes_t	pcm_wait (void)

int	play_init (snd_pcm_uframes_t len)

void	clear_chan (int chan, int len)

void	play_chan (int chan, const float *src, int len, int step=1)

int	play_done (int len)

int	capt_init (snd_pcm_uframes_t len)

void	capt_chan (int chan, float *dst, int len, int step=1)

int	capt_done (int len)

int	play_avail (void)

int	capt_avail (void)

int	play_delay (void)

int	capt_delay (void)

float	play_xrun (void) const

float	capt_xrun (void) const

int	state (void) const

size_t	fsize (void) const

uint32_t	fsamp (void) const

uint32_t	play_nfrag (void) const

uint32_t	capt_nfrag (void) const

uint32_t	nplay (void) const

uint32_t	ncapt (void) const

snd_pcm_t *	play_handle (void) const

snd_pcm_t *	capt_handle (void) const

Private Types
enum	{ MAXPFD = 16 , MAXCHAN = 128 }

typedef char (Alsa_pcmi::	clear_function) (char *, int)

typedef char (Alsa_pcmi::	play_function) (const float , char , int, int)

typedef const char (Alsa_pcmi::	capt_function) (const char , float , int, int)

Private Member Functions
void	initialise (const char play_name, const char capt_name, const char *ctrl_name)

int	set_hwpar (snd_pcm_t handle, snd_pcm_hw_params_t hwpar, const char sname, unsigned int nfrag, unsigned int nchan)

int	set_swpar (snd_pcm_t handle, snd_pcm_sw_params_t swpar, const char *sname)

int	recover (void)

float	xruncheck (snd_pcm_status_t *stat)

char *	clear_32 (char *dst, int nfrm)

char *	clear_24 (char *dst, int nfrm)

char *	clear_16 (char *dst, int nfrm)

char *	play_floatne (const float src, char dst, int nfrm, int step)

char *	play_floatre (const float src, char dst, int nfrm, int step)

char *	play_32le (const float src, char dst, int nfrm, int step)

char *	play_24le (const float src, char dst, int nfrm, int step)

char *	play_16le (const float src, char dst, int nfrm, int step)

char *	play_32be (const float src, char dst, int nfrm, int step)

char *	play_24be (const float src, char dst, int nfrm, int step)

char *	play_16be (const float src, char dst, int nfrm, int step)

const char *	capt_floatne (const char src, float dst, int nfrm, int step)

const char *	capt_floatre (const char src, float dst, int nfrm, int step)

const char *	capt_32le (const char src, float dst, int nfrm, int step)

const char *	capt_24le (const char src, float dst, int nfrm, int step)

const char *	capt_16le (const char src, float dst, int nfrm, int step)

const char *	capt_32be (const char src, float dst, int nfrm, int step)

const char *	capt_24be (const char src, float dst, int nfrm, int step)

const char *	capt_16be (const char src, float dst, int nfrm, int step)

Private Attributes
unsigned int	_fsamp

snd_pcm_uframes_t	_fsize

unsigned int	_play_nfrag

unsigned int	_real_nfrag

unsigned int	_capt_nfrag

unsigned int	_debug

int	_state

snd_pcm_t *	_play_handle

snd_pcm_t *	_capt_handle

snd_ctl_t *	_ctrl_handle

snd_pcm_hw_params_t *	_play_hwpar

snd_pcm_sw_params_t *	_play_swpar

snd_pcm_hw_params_t *	_capt_hwpar

snd_pcm_sw_params_t *	_capt_swpar

snd_pcm_format_t	_play_format

snd_pcm_format_t	_capt_format

snd_pcm_access_t	_play_access

snd_pcm_access_t	_capt_access

unsigned int	_play_nchan

unsigned int	_capt_nchan

float	_play_xrun

float	_capt_xrun

bool	_synced

int	_play_npfd

int	_capt_npfd

struct pollfd	_poll_fd [MAXPFD]

snd_pcm_uframes_t	_capt_offs

snd_pcm_uframes_t	_play_offs

int	_play_step

int	_capt_step

char *	_play_ptr [MAXCHAN]

const char *	_capt_ptr [MAXCHAN]

clear_function	_clear_func

play_function	_play_func

capt_function	_capt_func

void *	_dummy [16]

Detailed Description

Definition at line 28 of file zita-alsa-pcmi.h.

Member Typedef Documentation

◆ capt_function

typedef const char*(Alsa_pcmi::* Alsa_pcmi::capt_function) (const char *, float *, int, int)

private

Definition at line 114 of file zita-alsa-pcmi.h.

◆ clear_function

typedef char*(Alsa_pcmi::* Alsa_pcmi::clear_function) (char *, int)

private

Definition at line 112 of file zita-alsa-pcmi.h.

◆ play_function

typedef char*(Alsa_pcmi::* Alsa_pcmi::play_function) (const float *, char *, int, int)

private

Definition at line 113 of file zita-alsa-pcmi.h.

Member Enumeration Documentation

◆ anonymous enum

anonymous enum

Enumerator
DEBUG_INIT
DEBUG_STAT
DEBUG_WAIT
DEBUG_DATA
DEBUG_ALL
FORCE_16B
FORCE_2CH
TRY_INTLVD

Definition at line 43 of file zita-alsa-pcmi.h.

◆ anonymous enum

anonymous enum

private

Enumerator
MAXPFD
MAXCHAN

Definition at line 116 of file zita-alsa-pcmi.h.

Constructor & Destructor Documentation

◆ Alsa_pcmi()

Alsa_pcmi::Alsa_pcmi	(	const char *	play_name,
		const char *	capt_name,
		const char *	ctrl_name,
		unsigned int	rate,
		unsigned int	frsize,
		unsigned int	play_nfrags,
		unsigned int	capt_nfrags,
		unsigned int	debug = `0`
	)

◆ ~Alsa_pcmi()

Alsa_pcmi::~Alsa_pcmi ( void )

Member Function Documentation

◆ capt_16be()

const char* Alsa_pcmi::capt_16be	(	const char *	src,
		float *	dst,
		int	nfrm,
		int	step
	)

private

◆ capt_16le()

const char* Alsa_pcmi::capt_16le	(	const char *	src,
		float *	dst,
		int	nfrm,
		int	step
	)

private

◆ capt_24be()

const char* Alsa_pcmi::capt_24be	(	const char *	src,
		float *	dst,
		int	nfrm,
		int	step
	)

private

◆ capt_24le()

const char* Alsa_pcmi::capt_24le	(	const char *	src,
		float *	dst,
		int	nfrm,
		int	step
	)

private

◆ capt_32be()

const char* Alsa_pcmi::capt_32be	(	const char *	src,
		float *	dst,
		int	nfrm,
		int	step
	)

private

◆ capt_32le()

const char* Alsa_pcmi::capt_32le	(	const char *	src,
		float *	dst,
		int	nfrm,
		int	step
	)

private

◆ capt_avail()

int Alsa_pcmi::capt_avail ( void )

inline

Definition at line 76 of file zita-alsa-pcmi.h.

◆ capt_chan()

void Alsa_pcmi::capt_chan	(	int	chan,
		float *	dst,
		int	len,
		int	step = `1`
	)

◆ capt_delay()

int Alsa_pcmi::capt_delay ( void )

inline

Definition at line 88 of file zita-alsa-pcmi.h.

◆ capt_done()

int Alsa_pcmi::capt_done ( int len )

◆ capt_floatne()

const char* Alsa_pcmi::capt_floatne	(	const char *	src,
		float *	dst,
		int	nfrm,
		int	step
	)

private

◆ capt_floatre()

const char* Alsa_pcmi::capt_floatre	(	const char *	src,
		float *	dst,
		int	nfrm,
		int	step
	)

private

◆ capt_handle()

snd_pcm_t* Alsa_pcmi::capt_handle ( void ) const

inline

Definition at line 109 of file zita-alsa-pcmi.h.

◆ capt_init()

int Alsa_pcmi::capt_init ( snd_pcm_uframes_t len )

◆ capt_nfrag()

uint32_t Alsa_pcmi::capt_nfrag ( void ) const

inline

Definition at line 103 of file zita-alsa-pcmi.h.

◆ capt_xrun()

float Alsa_pcmi::capt_xrun ( void ) const

inline

Definition at line 96 of file zita-alsa-pcmi.h.

◆ clear_16()

char* Alsa_pcmi::clear_16	(	char *	dst,
		int	nfrm
	)

private

◆ clear_24()

char* Alsa_pcmi::clear_24	(	char *	dst,
		int	nfrm
	)

private

◆ clear_32()

char* Alsa_pcmi::clear_32	(	char *	dst,
		int	nfrm
	)

private

◆ clear_chan()

void Alsa_pcmi::clear_chan	(	int	chan,
		int	len
	)

◆ fsamp()

uint32_t Alsa_pcmi::fsamp ( void ) const

inline

Definition at line 100 of file zita-alsa-pcmi.h.

◆ fsize()

size_t Alsa_pcmi::fsize ( void ) const

inline

Definition at line 99 of file zita-alsa-pcmi.h.

◆ initialise()

void Alsa_pcmi::initialise	(	const char *	play_name,
		const char *	capt_name,
		const char *	ctrl_name
	)

private

◆ ncapt()

uint32_t Alsa_pcmi::ncapt ( void ) const

inline

Definition at line 106 of file zita-alsa-pcmi.h.

◆ nplay()

uint32_t Alsa_pcmi::nplay ( void ) const

inline

Definition at line 105 of file zita-alsa-pcmi.h.

◆ pcm_idle()

int Alsa_pcmi::pcm_idle ( int len )

◆ pcm_start()

int Alsa_pcmi::pcm_start ( void )

◆ pcm_stop()

int Alsa_pcmi::pcm_stop ( void )

◆ pcm_wait()

snd_pcm_sframes_t Alsa_pcmi::pcm_wait ( void )

◆ play_16be()

char* Alsa_pcmi::play_16be	(	const float *	src,
		char *	dst,
		int	nfrm,
		int	step
	)

private

◆ play_16le()

char* Alsa_pcmi::play_16le	(	const float *	src,
		char *	dst,
		int	nfrm,
		int	step
	)

private

◆ play_24be()

char* Alsa_pcmi::play_24be	(	const float *	src,
		char *	dst,
		int	nfrm,
		int	step
	)

private

◆ play_24le()

char* Alsa_pcmi::play_24le	(	const float *	src,
		char *	dst,
		int	nfrm,
		int	step
	)

private

◆ play_32be()

char* Alsa_pcmi::play_32be	(	const float *	src,
		char *	dst,
		int	nfrm,
		int	step
	)

private

◆ play_32le()

char* Alsa_pcmi::play_32le	(	const float *	src,
		char *	dst,
		int	nfrm,
		int	step
	)

private

◆ play_avail()

int Alsa_pcmi::play_avail ( void )

inline

Definition at line 71 of file zita-alsa-pcmi.h.

◆ play_chan()

void Alsa_pcmi::play_chan	(	int	chan,
		const float *	src,
		int	len,
		int	step = `1`
	)

◆ play_delay()

int Alsa_pcmi::play_delay ( void )

inline

Definition at line 81 of file zita-alsa-pcmi.h.

◆ play_done()

int Alsa_pcmi::play_done ( int len )

◆ play_floatne()

char* Alsa_pcmi::play_floatne	(	const float *	src,
		char *	dst,
		int	nfrm,
		int	step
	)

private

◆ play_floatre()

char* Alsa_pcmi::play_floatre	(	const float *	src,
		char *	dst,
		int	nfrm,
		int	step
	)

private

◆ play_handle()

snd_pcm_t* Alsa_pcmi::play_handle ( void ) const

inline

Definition at line 108 of file zita-alsa-pcmi.h.

◆ play_init()

int Alsa_pcmi::play_init ( snd_pcm_uframes_t len )

◆ play_nfrag()

uint32_t Alsa_pcmi::play_nfrag ( void ) const

inline

Definition at line 102 of file zita-alsa-pcmi.h.

◆ play_xrun()

float Alsa_pcmi::play_xrun ( void ) const

inline

Definition at line 95 of file zita-alsa-pcmi.h.

◆ printinfo()

void Alsa_pcmi::printinfo ( void )

◆ recover()

int Alsa_pcmi::recover ( void )

private

◆ set_hwpar()

int Alsa_pcmi::set_hwpar	(	snd_pcm_t *	handle,
		snd_pcm_hw_params_t *	hwpar,
		const char *	sname,
		unsigned int	nfrag,
		unsigned int *	nchan
	)

private

◆ set_swpar()

int Alsa_pcmi::set_swpar	(	snd_pcm_t *	handle,
		snd_pcm_sw_params_t *	swpar,
		const char *	sname
	)

private

◆ state()

int Alsa_pcmi::state ( void ) const

inline

Definition at line 98 of file zita-alsa-pcmi.h.

◆ xruncheck()

float Alsa_pcmi::xruncheck ( snd_pcm_status_t * stat )

private

Member Data Documentation

◆ _capt_access

snd_pcm_access_t Alsa_pcmi::_capt_access

private

Definition at line 164 of file zita-alsa-pcmi.h.

◆ _capt_format

snd_pcm_format_t Alsa_pcmi::_capt_format

private

Definition at line 162 of file zita-alsa-pcmi.h.

◆ _capt_func

capt_function Alsa_pcmi::_capt_func

private

Definition at line 181 of file zita-alsa-pcmi.h.

◆ _capt_handle

snd_pcm_t* Alsa_pcmi::_capt_handle

private

Definition at line 155 of file zita-alsa-pcmi.h.

◆ _capt_hwpar

snd_pcm_hw_params_t* Alsa_pcmi::_capt_hwpar

private

Definition at line 159 of file zita-alsa-pcmi.h.

◆ _capt_nchan

unsigned int Alsa_pcmi::_capt_nchan

private

Definition at line 166 of file zita-alsa-pcmi.h.

◆ _capt_nfrag

unsigned int Alsa_pcmi::_capt_nfrag

private

Definition at line 151 of file zita-alsa-pcmi.h.

◆ _capt_npfd

int Alsa_pcmi::_capt_npfd

private

Definition at line 171 of file zita-alsa-pcmi.h.

◆ _capt_offs

snd_pcm_uframes_t Alsa_pcmi::_capt_offs

private

Definition at line 173 of file zita-alsa-pcmi.h.

◆ _capt_ptr

const char* Alsa_pcmi::_capt_ptr[MAXCHAN]

private

Definition at line 178 of file zita-alsa-pcmi.h.

◆ _capt_step

int Alsa_pcmi::_capt_step

private

Definition at line 176 of file zita-alsa-pcmi.h.

◆ _capt_swpar

snd_pcm_sw_params_t* Alsa_pcmi::_capt_swpar

private

Definition at line 160 of file zita-alsa-pcmi.h.

◆ _capt_xrun

float Alsa_pcmi::_capt_xrun

private

Definition at line 168 of file zita-alsa-pcmi.h.

◆ _clear_func

clear_function Alsa_pcmi::_clear_func

private

Definition at line 179 of file zita-alsa-pcmi.h.

◆ _ctrl_handle

snd_ctl_t* Alsa_pcmi::_ctrl_handle

private

Definition at line 156 of file zita-alsa-pcmi.h.

◆ _debug

unsigned int Alsa_pcmi::_debug

private

Definition at line 152 of file zita-alsa-pcmi.h.

◆ _dummy

void* Alsa_pcmi::_dummy[16]

private

Definition at line 182 of file zita-alsa-pcmi.h.

◆ _fsamp

unsigned int Alsa_pcmi::_fsamp

private

Definition at line 147 of file zita-alsa-pcmi.h.

◆ _fsize

snd_pcm_uframes_t Alsa_pcmi::_fsize

private

Definition at line 148 of file zita-alsa-pcmi.h.

◆ _play_access

snd_pcm_access_t Alsa_pcmi::_play_access

private

Definition at line 163 of file zita-alsa-pcmi.h.

◆ _play_format

snd_pcm_format_t Alsa_pcmi::_play_format

private

Definition at line 161 of file zita-alsa-pcmi.h.

◆ _play_func

play_function Alsa_pcmi::_play_func

private

Definition at line 180 of file zita-alsa-pcmi.h.

◆ _play_handle

snd_pcm_t* Alsa_pcmi::_play_handle

private

Definition at line 154 of file zita-alsa-pcmi.h.

◆ _play_hwpar

snd_pcm_hw_params_t* Alsa_pcmi::_play_hwpar

private

Definition at line 157 of file zita-alsa-pcmi.h.

◆ _play_nchan

unsigned int Alsa_pcmi::_play_nchan

private

Definition at line 165 of file zita-alsa-pcmi.h.

◆ _play_nfrag

unsigned int Alsa_pcmi::_play_nfrag

private

Definition at line 149 of file zita-alsa-pcmi.h.

◆ _play_npfd

int Alsa_pcmi::_play_npfd

private

Definition at line 170 of file zita-alsa-pcmi.h.

◆ _play_offs

snd_pcm_uframes_t Alsa_pcmi::_play_offs

private

Definition at line 174 of file zita-alsa-pcmi.h.

◆ _play_ptr

char* Alsa_pcmi::_play_ptr[MAXCHAN]

private

Definition at line 177 of file zita-alsa-pcmi.h.

◆ _play_step

int Alsa_pcmi::_play_step

private

Definition at line 175 of file zita-alsa-pcmi.h.

◆ _play_swpar

snd_pcm_sw_params_t* Alsa_pcmi::_play_swpar

private

Definition at line 158 of file zita-alsa-pcmi.h.

◆ _play_xrun

float Alsa_pcmi::_play_xrun

private

Definition at line 167 of file zita-alsa-pcmi.h.

◆ _poll_fd

struct pollfd Alsa_pcmi::_poll_fd[MAXPFD]

private

Definition at line 171 of file zita-alsa-pcmi.h.

◆ _real_nfrag

unsigned int Alsa_pcmi::_real_nfrag

private

Definition at line 150 of file zita-alsa-pcmi.h.

◆ _state

int Alsa_pcmi::_state

private

Definition at line 153 of file zita-alsa-pcmi.h.

◆ _synced

bool Alsa_pcmi::_synced

private

Definition at line 169 of file zita-alsa-pcmi.h.

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

zita-alsa-pcmi.h

Public Types

Public Member Functions

Private Types

Private Member Functions

Private Attributes

Detailed Description

Member Typedef Documentation

◆ capt_function

◆ clear_function

◆ play_function

Member Enumeration Documentation

◆ anonymous enum

◆ anonymous enum

Constructor & Destructor Documentation

◆ Alsa_pcmi()

◆ ~Alsa_pcmi()

Member Function Documentation

◆ capt_16be()

◆ capt_16le()

◆ capt_24be()

◆ capt_24le()

◆ capt_32be()

◆ capt_32le()

◆ capt_avail()

◆ capt_chan()

◆ capt_delay()

◆ capt_done()

◆ capt_floatne()

◆ capt_floatre()

◆ capt_handle()

◆ capt_init()

◆ capt_nfrag()

◆ capt_xrun()

◆ clear_16()

◆ clear_24()

◆ clear_32()

◆ clear_chan()

◆ fsamp()

◆ fsize()

◆ initialise()

◆ ncapt()

◆ nplay()

◆ pcm_idle()

◆ pcm_start()

◆ pcm_stop()

◆ pcm_wait()

◆ play_16be()

◆ play_16le()

◆ play_24be()

◆ play_24le()

◆ play_32be()

◆ play_32le()

◆ play_avail()

◆ play_chan()

◆ play_delay()

◆ play_done()

◆ play_floatne()

◆ play_floatre()

◆ play_handle()

◆ play_init()

◆ play_nfrag()

◆ play_xrun()

◆ printinfo()

◆ recover()

◆ set_hwpar()

◆ set_swpar()

◆ state()

◆ xruncheck()

Member Data Documentation

◆ _capt_access

◆ _capt_format

◆ _capt_func

◆ _capt_handle

◆ _capt_hwpar

◆ _capt_nchan

◆ _capt_nfrag

◆ _capt_npfd

◆ _capt_offs

◆ _capt_ptr

◆ _capt_step