time_scale.c File Reference

#include <stdlib.h>
#include <stdio.h>
#include <inttypes.h>
#include <string.h>
#include <fcntl.h>
#include <time.h>
#include <limits.h>
#include "spandsp/telephony.h"
#include "spandsp/time_scale.h"

Functions
int	time_scale_rate (time_scale_t *s, float rate)
	Change the time scale rate.
int	time_scale_init (time_scale_t *s, float rate)
	Initialise a time scale context.
int	time_scale (time_scale_t *s, int16_t out[], int16_t in[], int len)
	Time scale a chunk of audio samples.

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Detailed Description

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Function Documentation

int time_scale (  time_scale_t *  s, int16_t  out[], int16_t  in[], int  len )

Time scale a chunk of audio samples. Time scale a chunk of audio samples. Parameters: s  The time sclae context. out  The output audio sample buffer. in  The input audio sample buffer. len  The number of input samples. Returns: The number of output samples.

int time_scale_init (  time_scale_t *  s, float  rate )

Initialise a time scale context. Initialise a time scale context. This must be called before the first use of the context, to initialise its contents. Parameters: s  The time scale context. rate  The ratio between the output speed and the input speed. Returns: 0 if initialised OK, else -1.

int time_scale_rate (  time_scale_t *  s, float  rate )

Change the time scale rate. Change the time scale rate. Parameters: s  The time scale context. rate  The ratio between the output speed and the input speed. Returns: 0 if changed OK, else -1.

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