NAME
ost::DTMFDetect - DTMFDetect is used for detecting DTMF tones in a
stream of audio.
SYNOPSIS
#include <audio2.h>
Inherits ost::Audio.
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)
Detailed Description
DTMFDetect is used for detecting DTMF tones in a stream of audio.
It currently only supports 8000Hz input.
Constructor & Destructor Documentation
ost::DTMFDetect::DTMFDetect ()
ost::DTMFDetect::~DTMFDetect ()
Member Function Documentation
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]
float ost::DTMFDetect::goertzelResult (goertzel_state_t * s) [protected]
void ost::DTMFDetect::goertzelUpdate (goertzel_state_t * s, Sample x[], int
samples) [protected]
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.
Author
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