libsent/src/adin/adin_mic_sol2.c File Reference

Microphone input on Solaris 2.x. More...

#include <sent/stddefs.h>
#include <sent/adin.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <errno.h>
#include <sys/stropts.h>
#include <sys/audioio.h>

Go to the source code of this file.

Defines
#define	DEFAULT_DEVICE   "/dev/audio"
	Default device name, can be overridden by AUDIODEV environment variable.
Functions
boolean	adin_mic_standby (int sfreq, void *arg)
	Device initialization: check device capability and open for recording.
boolean	adin_mic_begin ()
	Start recording.
boolean	adin_mic_end ()
	Stop recording.
int	adin_mic_read (SP16 *buf, int sampnum)
	Read samples from device.
Variables
static int	afd
	Audio file descriptor.
static struct audio_info	ainfo
	Audio format information.

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Detailed Description

Microphone input on Solaris 2.x.

Low level I/O functions for microphone input on Solaris 2.x machines. This file is used as default on Solaris 2.x machines.

Tested on Sun Solaris 2.5.1 and 2.6. Also works on later versions. Please note that this will not work on Solaris x86, since machine byte order is fixed to big endian.

The microphone input device will be automatically selected by Julius on startup. Please note that the recoding volue will not be altered by Julius, and appropriate value should be set by another tool such as gaintool.

The default device name is "/dev/audio", which can be changed by setting environment variable AUDIODEV.

Author:

Akinobu LEE

Date:

Sun Feb 13 19:06:46 2005

Revision

1.1.1.1

Definition in file adin_mic_sol2.c.

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Function Documentation

boolean adin_mic_standby	(	int	sfreq,
		void *	arg
	)

Device initialization: check device capability and open for recording.

Connection initialization: check connectivity and open for recording.

Parameters:

	sfreq	[in] required sampling frequency.
	arg	[in] a dummy data

Returns:

TRUE on success, FALSE on failure.

Definition at line 77 of file adin_mic_sol2.c.

boolean adin_mic_begin

(

)

Start recording.

Returns:

TRUE on success, FALSE on failure.

Definition at line 152 of file adin_mic_sol2.c.

boolean adin_mic_end

(

)

Stop recording.

Returns:

TRUE on success, FALSE on failure.

Definition at line 173 of file adin_mic_sol2.c.

int adin_mic_read	(	SP16 *	buf,
		int	sampnum
	)

Read samples from device.

Read samples from the daemon.

Try to read sampnum samples and returns actual number of recorded samples currently available. This function will block until at least some samples are obtained.

Parameters:

	buf	[out] samples obtained in this function
	sampnum	[in] wanted number of samples to be read

Returns:

actural number of read samples, -2 if an error occured.

Definition at line 200 of file adin_mic_sol2.c.

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