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>

Include dependency graph for adin_mic_sol2.c:

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)
boolean	adin_mic_start ()
boolean	adin_mic_stop ()
int	adin_mic_read (SP16 *buf, int sampnum)
	Read samples from the daemon.
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.

Author:

Akinobu LEE

Date:

Sun Feb 13 19:06:46 2005

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.

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. Parameters: sfreq  [in] required sampling frequency. arg  [in] a dummy data Returns: TRUE on success, FALSE on failure. Definition at line 76 of file adin_mic_sol2.c.

boolean adin_mic_start (   )

Start recording. Returns: TRUE on success, FALSE on failure. Definition at line 148 of file adin_mic_sol2.c.

boolean adin_mic_stop (   )

Stop recording. Returns: TRUE on success, FALSE on failure. Definition at line 169 of file adin_mic_sol2.c.

int adin_mic_read (  SP16 *  buf, int  sampnum )

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 196 of file adin_mic_sol2.c.

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