ad.h File Reference

generic live audio interface for recording and playback More...

#include <sphinx_config.h>
#include <sphinxbase/sphinxbase_export.h>
#include <sphinxbase/prim_type.h>

Go to the source code of this file.

Macros
#define	DEFAULT_SAMPLES_PER_SEC   16000
#define	AD_OK   0
#define	AD_EOF   -1
#define	AD_ERR_GEN   -1
#define	AD_ERR_NOT_OPEN   -2
#define	AD_ERR_WAVE   -3

Typedefs
typedef struct ad_rec_s	ad_rec_t

Functions
SPHINXBASE_EXPORT ad_rec_t *	ad_open_dev (const char *dev, int32 samples_per_sec)
	Open a specific audio device for recording. More...
SPHINXBASE_EXPORT ad_rec_t *	ad_open_sps (int32 samples_per_sec)
	Open the default audio device with a given sampling rate. More...
SPHINXBASE_EXPORT ad_rec_t *	ad_open (void)
	Open the default audio device.
SPHINXBASE_EXPORT int32	ad_start_rec (ad_rec_t *)
SPHINXBASE_EXPORT int32	ad_stop_rec (ad_rec_t *)
SPHINXBASE_EXPORT int32	ad_close (ad_rec_t *)
SPHINXBASE_EXPORT int32	ad_read (ad_rec_t *, int16 *buf, int32 max)

Detailed Description

generic live audio interface for recording and playback

Definition in file ad.h.

Function Documentation

ad_open_dev()

SPHINXBASE_EXPORT ad_rec_t* ad_open_dev	(	const char *	dev,
		int32	samples_per_sec
	)

Open a specific audio device for recording.

The device is opened in non-blocking mode and placed in idle state.

Returns

pointer to read-only ad_rec_t structure if successful, NULL otherwise. The return value to be used as the first argument to other recording functions.

Parameters

dev	Device name (platform-specific)
samples_per_sec	Samples per second

Definition at line 187 of file ad_alsa.c.

Referenced by ad_open_sps().

ad_open_sps()

SPHINXBASE_EXPORT ad_rec_t* ad_open_sps

(

int32

samples_per_sec

)

Open the default audio device with a given sampling rate.

Parameters

samples_per_sec

Samples per second

Definition at line 222 of file ad_alsa.c.

References ad_open_dev().

Referenced by ad_open().