ost::DTMFDetect Class Reference

DTMFDetect is used for detecting DTMF tones in a stream of audio. More...

#include <audio2.h>

Inheritance diagram for ost::DTMFDetect:

List of all members.

Public Member Functions
	DTMFDetect ()
	~DTMFDetect ()
int	putSamples (Linear buffer, int count)
	This routine is used to push linear audio data into the dtmf tone detection analysizer.
int	getResult (char *data, int size)
	Copy detected dtmf results into a data buffer.
Protected Member Functions
void	goertzelInit (goertzel_state_t *s, tone_detection_descriptor_t *t)
void	goertzelUpdate (goertzel_state_t *s, Sample x[], int samples)
float	goertzelResult (goertzel_state_t *s)

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Detailed Description

DTMFDetect is used for detecting DTMF tones in a stream of audio.

It currently only supports 8000Hz input.

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Constructor & Destructor Documentation

ost::DTMFDetect::DTMFDetect

(

)

ost::DTMFDetect::~DTMFDetect

(

)

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Member Function Documentation

int ost::DTMFDetect::putSamples	(	Linear	buffer,
		int	count
	)

This routine is used to push linear audio data into the dtmf tone detection analysizer.

It may be called multiple times and results fetched later.

Parameters:

	buffer	of audio data in native machine endian to analysize.
	count	of samples to analysize from buffer.

int ost::DTMFDetect::getResult	(	char *	data,
		int	size
	)

Copy detected dtmf results into a data buffer.

Parameters:

	data	buffer to copy into.
	size	of data buffer to copy into.

void ost::DTMFDetect::goertzelInit	(	goertzel_state_t *	s,
		tone_detection_descriptor_t *	t
	)			[protected]

void ost::DTMFDetect::goertzelUpdate	(	goertzel_state_t *	s,
		Sample	x[],
		int	samples
	)			[protected]

float ost::DTMFDetect::goertzelResult

(

goertzel_state_t *

s

)

[protected]

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The documentation for this class was generated from the following file:

• audio2.h