libsent/src/adin/adin_mic_linux.c File Reference

Microphone input on Linux - default device. More...

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

Go to the source code of this file.

Functions
boolean	adin_mic_standby (int sfreq, void *dummy)
	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.

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Detailed Description

Microphone input on Linux - default device.

Low level I/O functions for microphone input on Linux. This will be called when no device was explicitly specified. A call to the functions in this file will be redirected to ALSA, OSS or ESD.

Author:

Akinobu LEE

Date:

Sun Feb 13 16:18:26 2005

Revision

1.2

Definition in file adin_mic_linux.c.

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Function Documentation

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 45 of file adin_mic_linux.c.

boolean adin_mic_begin

(

)

Start recording.

Returns:

TRUE on success, FALSE on failure.

Definition at line 65 of file adin_mic_linux.c.

boolean adin_mic_end

(

)

Stop recording.

Returns:

TRUE on success, FALSE on failure.

Definition at line 85 of file adin_mic_linux.c.

int adin_mic_read	(	SP16 *	buf,
		int	sampnum
	)

Read samples from device.

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 112 of file adin_mic_linux.c.

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