adin_portaudio.c File Reference

Microphone input using portaudio library. More...

#include <sent/stddefs.h>
#include "pa/pablio.h"

Include dependency graph for adin_portaudio.c:

Go to the source code of this file.

Functions
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
PABLIO_Stream *	aStream
	Stream information.

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Detailed Description

Microphone input using portaudio library.

Author:

Akinobu LEE

Date:

Mon Feb 14 12:03:48 2005

Low level I/O functions for microphone input using portaudio library. To use, please specify "--with-mictype=portaudio" options to configure script. This function is currently available for Linux and Win32. On Windows, this is default.

Julius does not alter any mixer device setting at all. You should configure the mixer for recording source (mic/line) and recording volume correctly using other audio tool such as xmixer on Linux, or 'Volume Control' on Windows.

Portaudio is a free, cross platform, open-source audio I/O library. The sources are included at libsent/src/adin/pa/. This program uses simplified blocking I/O layer.

See also:

http://www.portaudio.com/

Revision

1.1.1.1

Definition in file adin_portaudio.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 70 of file adin_portaudio.c. Referenced by adin_select().

boolean adin_mic_start (   )

Start recording. Returns: TRUE on success, FALSE on failure. Definition at line 95 of file adin_portaudio.c. Referenced by adin_mic_standby(), and adin_select().

boolean adin_mic_stop (   )

Stop recording. Returns: TRUE on success, FALSE on failure. Definition at line 106 of file adin_portaudio.c. Referenced by adin_mic_standby(), and adin_select().

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 124 of file adin_portaudio.c. Referenced by adin_select().

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