libsent/src/adin/adin_mic_o2.c File Reference

Microphone input on SGI IRIX machine. More...

#include <sent/stddefs.h>
#include <sent/adin.h>
#include <audio.h>

Include dependency graph for adin_mic_o2.c:

Go to the source code of this file.

Functions
static boolean	adin_o2_setup_global (double rate)
boolean	adin_mic_standby (int sfreq, void *dummy)
boolean	adin_mic_start ()
boolean	adin_mic_stop ()
int	adin_mic_read (SP16 *buf, int sampnum)
	Read samples from the daemon.
Variables
static ALconfig	ac
	Local port settings.
static ALport	aport
	Audio port.

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Detailed Description

Microphone input on SGI IRIX machine.

Author:

Akinobu LEE

Date:

Sun Feb 13 18:42:22 2005

Low level I/O functions for microphone input on a SGI IRIX machine. This file is used as default on IRIX machines.

Tested on IRIX 6.3, SGI O2 Workstation.

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 apanel.

Revision

1.3

Definition in file adin_mic_o2.c.

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Function Documentation

static boolean adin_o2_setup_global

(

double

rate

)

[static]

Initialize global audio interface to use microphone input.

Parameters:

rate

[in] sampling rate in Hz

Returns:

TRUE on success, FALSE on failure.

Definition at line 57 of file adin_mic_o2.c.

Referenced by adin_mic_standby().

boolean adin_mic_standby	(	int	sfreq,
		void *	dummy
	)

Device initialization: check device capability and open for recording.

Parameters:

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

Returns:

TRUE on success, FALSE on failure.

Definition at line 85 of file adin_mic_o2.c.

boolean adin_mic_start

(

)

Start recording.

Returns:

TRUE on success, FALSE on failure.

Definition at line 119 of file adin_mic_o2.c.

boolean adin_mic_stop

(

)

Stop recording.

Returns:

TRUE on success, FALSE on failure.

Definition at line 137 of file adin_mic_o2.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 one sample can be 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 157 of file adin_mic_o2.c.

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