This graph shows which files directly or indirectly include this file:

Macros
#define	min(a, b)

#define	max(a, b)

#define	M_PI 3.14159265358979323846

#define	DLL_EXPORT extern

Enumerations
enum	dspau_conversiontype { magnitude = 0, magnitude_dbv = 1, magnitude_rooted = 2, magnitude_squared = 3, phase_degrees = 4, phase_radians = 5 }

Functions
DLL_EXPORT int	dspau_spectrum (double in, double out, int dims, int *sizes, int conversion)
	Create a spectrum from a double array of values. More...

DLL_EXPORT int	dspau_squarelawfilter (double in, double out, int len)
	A square law filter. More...

DLL_EXPORT int	dspau_lowpassfilter (double in, double out, int len, double samplingfrequency, double frequency, double q)
	A low pass filter. More...

DLL_EXPORT int	dspau_highpassfilter (double in, double out, int len, double samplingfrequency, double frequency, double q)
	A high pass filter. More...

DLL_EXPORT int	dspau_bandpassfilter (double in, double out, int len, double samplingfrequency, double frequency, double q)
	A band pass filter. More...

DLL_EXPORT int	dspau_bandrejectfilter (double in, double out, int len, double samplingfrequency, double frequency, double q)
	A band reject filter. More...

DLL_EXPORT int	dspau_autocorrelate (double in, double out, int *len)
	An auto-correlator. More...

double	dspau_crosscorrelate (double in1, double in2, double out, int len1, int len2, int len)
	A cross-correlator. More...

DLL_EXPORT int	dspau_bandpasscorrelate (double in, double out, int *len, int skip, double Q)
	A band-pass auto-correlator (Warning: high memory usage!) More...

double	dspau_minmidmax (double in, int len, double min, double *max)
	Gets minimum, mid, and maximum values of the input stream. More...

double	dspau_mean (double *in, int len)
	A mean calculator. More...

DLL_EXPORT int	dspau_removemean (double in, double out, int len)
	Subtract mean from stream. More...

DLL_EXPORT int	dspau_stretch (double in, double out, int len, double min, double max)
	Stretch minimum and maximum values of the input stream. More...

DLL_EXPORT int	dspau_normalize (double in, double out, int len, double min, double max)
	Normalize the input stream to the minimum and maximum values. More...

DLL_EXPORT int	dspau_sub (double in1, double in2, double *out, int len)
	Subtract elements of one stream from another's. More...

DLL_EXPORT int	dspau_sum (double in1, double in2, double *out, int len)
	Sum elements of one stream to another's. More...

DLL_EXPORT int	dspau_div (double in1, double in2, double *out, int len)
	Divide elements of one stream to another's. More...

DLL_EXPORT int	dspau_mul (double in1, double in2, double *out, int len)
	Multiply elements of one stream to another's. More...

DLL_EXPORT int	dspau_sub1 (double in, double out, int len, double val)
	Subtract a value from elements of the input stream. More...

DLL_EXPORT int	dspau_sum1 (double in, double out, int len, double val)
	Sum elements of the input stream to a value. More...

DLL_EXPORT int	dspau_div1 (double in, double out, int len, double val)
	Divide elements of the input stream to a value. More...

DLL_EXPORT int	dspau_mul1 (double in, double out, int len, double val)
	Multiply elements of the input stream to a value. More...

DLL_EXPORT int	dspau_median (double in, double out, int len, int size, int median)
	Median elements of the inut stream. More...

DLL_EXPORT int	dspau_u8todouble (unsigned char in, double out, int len)
	Convert an 8bit unsigned array into a double array. More...

DLL_EXPORT int	dspau_u16todouble (unsigned short int in, double out, int len)
	Convert a 16bit unsigned array into a double array. More...

DLL_EXPORT int	dspau_u32todouble (unsigned int in, double out, int len)
	Convert a 32bit unsigned array into a double array. More...

DLL_EXPORT int	dspau_u64todouble (unsigned long int in, double out, int len)
	Convert a 64bit unsigned array into a double array. More...

DLL_EXPORT int	dspau_s8todouble (signed char in, double out, int len)
	Convert an 8bit signed array into a double array. More...

DLL_EXPORT int	dspau_s16todouble (signed short int in, double out, int len)
	Convert a 16bit signed array into a double array. More...

DLL_EXPORT int	dspau_s32todouble (signed int in, double out, int len)
	Convert a 32bit signed array into a double array. More...

DLL_EXPORT int	dspau_s64todouble (signed long int in, double out, int len)
	Convert a 64bit signed array into a double array. More...

DLL_EXPORT int	dspau_doubletou8 (double in, unsigned char out, int len)
	Convert a double array into a 8bit unsigned array. More...

DLL_EXPORT int	dspau_doubletou16 (double in, unsigned short int out, int len)
	Convert a double array into a 16bit unsigned array. More...

DLL_EXPORT int	dspau_doubletou32 (double in, unsigned int out, int len)
	Convert a double array into a 32bit unsigned array. More...

DLL_EXPORT int	dspau_doubletou64 (double in, unsigned long int out, int len)
	Convert a double array into a 64bit unsigned array. More...

DLL_EXPORT int	dspau_doubletos8 (double in, signed char out, int len)
	Convert a double array into an 8bit signed array. More...

DLL_EXPORT int	dspau_doubletos16 (double in, signed short int out, int len)
	Convert a double array into a 16bit signed array. More...

DLL_EXPORT int	dspau_doubletos32 (double in, signed int out, int len)
	Convert a double array into a 32bit signed array. More...

DLL_EXPORT int	dspau_doubletos64 (double in, signed long int out, int len)
	Convert a double array into a 64bit signed array. More...

Macro Definition Documentation

◆ DLL_EXPORT

#define DLL_EXPORT extern

◆ M_PI

#define M_PI 3.14159265358979323846

◆ max

#define max	(	a,
		b
	)

Value:

({ __typeof__ (a) _a = (a); \
       __typeof__ (b) _b = (b); \
     _a > _b ? _a : _b; })

◆ min

#define min	(	a,
		b
	)

Value:

({ __typeof__ (a) _a = (a); \
       __typeof__ (b) _b = (b); \
     _a < _b ? _a : _b; })

Enumeration Type Documentation

◆ dspau_conversiontype

enum dspau_conversiontype

Enumerator
magnitude
magnitude_dbv
magnitude_rooted
magnitude_squared
phase_degrees
phase_radians

Function Documentation

◆ dspau_autocorrelate()

DLL_EXPORT int dspau_autocorrelate	(	double *	in,
		double *	out,
		int *	len
	)

An auto-correlator.

Parameters

in	the input stream. (input)
out	the output stream. (output)
len	the length of the input stream (input/output).
skip	skip n values at beginning (resulting len will be reduced).

Returns: the output stream if successfull elaboration. NULL if an error is encountered. Return 0 if success. Return -1 if any error occurs.

◆ dspau_bandpasscorrelate()

DLL_EXPORT int dspau_bandpasscorrelate	(	double *	in,
		double *	out,
		int *	len,
		int	skip,
		double	Q
	)

A band-pass auto-correlator (Warning: high memory usage!)

Parameters

in	the input stream. (input)
out	the output stream. (output)
len	the length of the input stream. (input/output)
skip	skip n values at beginning (resulting len will be reduced).
Q	the slope of the band-pass filters.

Returns: the output stream if successfull elaboration. NULL if an error is encountered. Return 0 if success. Return -1 if any error occurs.

◆ dspau_bandpassfilter()

DLL_EXPORT int dspau_bandpassfilter	(	double *	in,
		double *	out,
		int	len,
		double	samplingfrequency,
		double	frequency,
		double	q
	)

A band pass filter.

Parameters

in	the input stream. (input)
out	the output stream. (output)
len	the length of the input stream.
samplingfrequency	the sampling frequency of the input stream.
frequency	the center frequency of the filter.
q	the cutoff slope.

Returns: the output stream if successfull elaboration. NULL if an error is encountered. Return 0 if success. Return -1 if any error occurs.

◆ dspau_bandrejectfilter()

DLL_EXPORT int dspau_bandrejectfilter	(	double *	in,
		double *	out,
		int	len,
		double	samplingfrequency,
		double	frequency,
		double	q
	)

A band reject filter.

Parameters

in	the input stream. (input)
out	the output stream. (output)
len	the length of the input stream.
samplingfrequency	the sampling frequency of the input stream.
frequency	the center frequency of the filter.
q	the cutoff slope.

Returns: the output stream if successfull elaboration. NULL if an error is encountered. Return 0 if success. Return -1 if any error occurs.

◆ dspau_crosscorrelate()

double dspau_crosscorrelate	(	double *	in1,
		double *	in2,
		double *	out,
		int	len1,
		int	len2,
		int *	len
	)

A cross-correlator.

Parameters

in1	the first input stream. (input)
in2	the second input stream. (input)
out	the output stream. (output)
len1	the length of the first input stream. (input)
len2	the length of the second input stream. (input)
len	the length of the output stream. (output)

Returns: the resulting correlation degree.; the output stream if successfull elaboration. NULL if an error is encountered. Return 0 if success. Return -1 if any error occurs.

◆ dspau_div()

DLL_EXPORT int dspau_div	(	double *	in1,
		double *	in2,
		double *	out,
		int	len
	)

Divide elements of one stream to another's.

Parameters

in1	the Numerators input stream. (input)
in2	the Denominators input stream. (input)
out	the output stream. (output)
len	the length of the input stream.

Returns: the output stream if successfull elaboration. NULL if an error is encountered. Return 0 if success. Return -1 if any error occurs.

◆ dspau_div1()

DLL_EXPORT int dspau_div1	(	double *	in,
		double *	out,
		int	len,
		double	val
	)

Divide elements of the input stream to a value.

Parameters

in	the Numerators input stream. (input)
out	the output stream. (output)
len	the length of the input stream.
val	the denominator.

Returns: the output stream if successfull elaboration. NULL if an error is encountered. Return 0 if success. Return -1 if any error occurs.

◆ dspau_doubletos16()

DLL_EXPORT int dspau_doubletos16	(	double *	in,
		signed short int *	out,
		int	len
	)

Convert a double array into a 16bit signed array.

Parameters

in	the input stream. (input)
out	the output stream. (output)
len	the length of the input stream.

Returns: the output stream if successfull elaboration. NULL if an error is encountered. Return 0 if success. Return -1 if any error occurs.

◆ dspau_doubletos32()

DLL_EXPORT int dspau_doubletos32	(	double *	in,
		signed int *	out,
		int	len
	)

Convert a double array into a 32bit signed array.

Parameters

in	the input stream. (input)
out	the output stream. (output)
len	the length of the input stream.

Returns: the output stream if successfull elaboration. NULL if an error is encountered. Return 0 if success. Return -1 if any error occurs.

◆ dspau_doubletos64()

DLL_EXPORT int dspau_doubletos64	(	double *	in,
		signed long int *	out,
		int	len
	)

Convert a double array into a 64bit signed array.

Parameters

in	the input stream. (input)
out	the output stream. (output)
len	the length of the input stream.

Returns: the output stream if successfull elaboration. NULL if an error is encountered. Return 0 if success. Return -1 if any error occurs.

◆ dspau_doubletos8()

DLL_EXPORT int dspau_doubletos8	(	double *	in,
		signed char *	out,
		int	len
	)

Convert a double array into an 8bit signed array.

Parameters

in	the input stream. (input)
out	the output stream. (output)
len	the length of the input stream.

Returns: the output stream if successfull elaboration. NULL if an error is encountered. Return 0 if success. Return -1 if any error occurs.

◆ dspau_doubletou16()

DLL_EXPORT int dspau_doubletou16	(	double *	in,
		unsigned short int *	out,
		int	len
	)

Convert a double array into a 16bit unsigned array.

Parameters

in	the input stream. (input)
out	the output stream. (output)
len	the length of the input stream.

Returns: the output stream if successfull elaboration. NULL if an error is encountered. Return 0 if success. Return -1 if any error occurs.

◆ dspau_doubletou32()

DLL_EXPORT int dspau_doubletou32	(	double *	in,
		unsigned int *	out,
		int	len
	)

Convert a double array into a 32bit unsigned array.

Parameters

in	the input stream. (input)
out	the output stream. (output)
len	the length of the input stream.

Returns: the output stream if successfull elaboration. NULL if an error is encountered. Return 0 if success. Return -1 if any error occurs.

◆ dspau_doubletou64()

DLL_EXPORT int dspau_doubletou64	(	double *	in,
		unsigned long int *	out,
		int	len
	)

Convert a double array into a 64bit unsigned array.

Parameters

in	the input stream. (input)
out	the output stream. (output)
len	the length of the input stream.

Returns: the output stream if successfull elaboration. NULL if an error is encountered. Return 0 if success. Return -1 if any error occurs.

◆ dspau_doubletou8()

DLL_EXPORT int dspau_doubletou8	(	double *	in,
		unsigned char *	out,
		int	len
	)

Convert a double array into a 8bit unsigned array.

Parameters

in	the input stream. (input)
out	the output stream. (output)
len	the length of the input stream.

Returns: the output stream if successfull elaboration. NULL if an error is encountered. Return 0 if success. Return -1 if any error occurs.

◆ dspau_highpassfilter()

DLL_EXPORT int dspau_highpassfilter	(	double *	in,
		double *	out,
		int	len,
		double	samplingfrequency,
		double	frequency,
		double	q
	)

A high pass filter.

Parameters

in	the input stream. (input)
out	the output stream. (output)
len	the length of the input stream.
samplingfrequency	the sampling frequency of the input stream.
frequency	the cutoff frequency of the filter.
q	the cutoff slope.

Returns: the output stream if successfull elaboration. NULL if an error is encountered. Return 0 if success. Return -1 if any error occurs.

◆ dspau_lowpassfilter()

DLL_EXPORT int dspau_lowpassfilter	(	double *	in,
		double *	out,
		int	len,
		double	samplingfrequency,
		double	frequency,
		double	q
	)

A low pass filter.

Parameters

in	the input stream. (input)
out	the output stream. (output)
len	the length of the input stream.
samplingfrequency	the sampling frequency of the input stream.
frequency	the cutoff frequency of the filter.
q	the cutoff slope.

Returns: the output stream if successfull elaboration. NULL if an error is encountered. Return 0 if success. Return -1 if any error occurs.

◆ dspau_mean()

double dspau_mean	(	double *	in,
		int	len
	)

A mean calculator.

Parameters

in	the input stream. (input)
len	the length of the input stream.

Returns: the mean value of the stream. Return mean if success.

◆ dspau_median()

DLL_EXPORT int dspau_median	(	double *	in,
		double *	out,
		int	len,
		int	size,
		int	median
	)

Median elements of the inut stream.

Parameters

in	the input stream. (input)
out	the output stream. (output)
len	the length of the input stream.
size	the length of the median.
median	the location of the median value.

Returns: the output stream if successfull elaboration. NULL if an error is encountered. Return 0 if success. Return -1 if any error occurs.

◆ dspau_minmidmax()

double dspau_minmidmax	(	double *	in,
		int	len,
		double *	min,
		double *	max
	)

Gets minimum, mid, and maximum values of the input stream.

Parameters

in	the input stream. (input)
len	the length of the input stream.
min	the minimum value (output).
max	the maximum value (output).

Returns: the mid value (max - min) / 2 + min. Return mid if success.

◆ dspau_mul()

DLL_EXPORT int dspau_mul	(	double *	in1,
		double *	in2,
		double *	out,
		int	len
	)

Multiply elements of one stream to another's.

Parameters

in1	the first input stream. (input)
in2	the second input stream. (input)
out	the output stream. (output)
len	the length of the input stream.

Returns: the output stream if successfull elaboration. NULL if an error is encountered. Return 0 if success. Return -1 if any error occurs.

◆ dspau_mul1()

DLL_EXPORT int dspau_mul1	(	double *	in,
		double *	out,
		int	len,
		double	val
	)

Multiply elements of the input stream to a value.

Parameters

in	the first input stream. (input)
out	the output stream. (output)
len	the length of the input stream.
val	the value used for this operation.

Returns: the output stream if successfull elaboration. NULL if an error is encountered. Return 0 if success. Return -1 if any error occurs.

◆ dspau_normalize()

DLL_EXPORT int dspau_normalize	(	double *	in,
		double *	out,
		int	len,
		double	min,
		double	max
	)

Normalize the input stream to the minimum and maximum values.

Parameters

in	the input stream. (input)
out	the output stream. (output)
len	the length of the input stream.
min	the clamping minimum value.
max	the clamping maximum value.

Returns: the output stream if successfull elaboration. NULL if an error is encountered.

Return 0 if success. Return -1 if any error occurs.

◆ dspau_removemean()

DLL_EXPORT int dspau_removemean	(	double *	in,
		double *	out,
		int	len
	)

Subtract mean from stream.

Parameters

in	the input stream. (input)
out	the output stream. (output)
len	the length of the input stream.

Returns: the output stream if successfull elaboration. NULL if an error is encountered. Return 0 if success. Return -1 if any error occurs.

◆ dspau_s16todouble()

DLL_EXPORT int dspau_s16todouble	(	signed short int *	in,
		double *	out,
		int	len
	)

Convert a 16bit signed array into a double array.

Parameters

in	the input stream. (input)
out	the output stream. (output)
len	the length of the input stream.

Returns: the output stream if successfull elaboration. NULL if an error is encountered. Return 0 if success. Return -1 if any error occurs.

◆ dspau_s32todouble()

DLL_EXPORT int dspau_s32todouble	(	signed int *	in,
		double *	out,
		int	len
	)

Convert a 32bit signed array into a double array.

Parameters

in	the input stream. (input)
out	the output stream. (output)
len	the length of the input stream.

Returns: the output stream if successfull elaboration. NULL if an error is encountered. Return 0 if success. Return -1 if any error occurs.

◆ dspau_s64todouble()

DLL_EXPORT int dspau_s64todouble	(	signed long int *	in,
		double *	out,
		int	len
	)

Convert a 64bit signed array into a double array.

Parameters

in	the input stream. (input)
out	the output stream. (output)
len	the length of the input stream.

Returns: the output stream if successfull elaboration. NULL if an error is encountered. Return 0 if success. Return -1 if any error occurs.

◆ dspau_s8todouble()

DLL_EXPORT int dspau_s8todouble	(	signed char *	in,
		double *	out,
		int	len
	)

Convert an 8bit signed array into a double array.

Parameters

in	the input stream. (input)
out	the output stream. (output)
len	the length of the input stream.

Returns: the output stream if successfull elaboration. NULL if an error is encountered. Return 0 if success. Return -1 if any error occurs.

◆ dspau_spectrum()

DLL_EXPORT int dspau_spectrum	(	double *	in,
		double *	out,
		int	dims,
		int *	sizes,
		int	conversion
	)

Create a spectrum from a double array of values.

Parameters

in	the input stream. (input)
out	the output stream. (output)
dims	the number of dimensions of the input stream (input).
sizes	array with the lengths of each dimension of the input stream (input).
conversion	the output magnitude dspau_conversiontype type.

Returns: the output stream if successfull elaboration. NULL if an error is encountered. Return 0 if success. Return -1 if any error occurs.

◆ dspau_squarelawfilter()

DLL_EXPORT int dspau_squarelawfilter	(	double *	in,
		double *	out,
		int	len
	)

A square law filter.

Parameters

in	the input stream. (input)
out	the output stream. (output)
len	the length of the input stream.

Returns: the output stream if successfull elaboration. NULL if an error is encountered. Return 0 if success. Return -1 if any error occurs.

◆ dspau_stretch()

DLL_EXPORT int dspau_stretch	(	double *	in,
		double *	out,
		int	len,
		double	min,
		double	max
	)

Stretch minimum and maximum values of the input stream.

Parameters

in	the input stream. (input)
out	the output stream. (output)
len	the length of the input stream.
min	the desired minimum value.
max	the desired maximum value.

Returns: the output stream if successfull elaboration. NULL if an error is encountered. Return 0 if success. Return -1 if any error occurs.

◆ dspau_sub()

DLL_EXPORT int dspau_sub	(	double *	in1,
		double *	in2,
		double *	out,
		int	len
	)

Subtract elements of one stream from another's.

Parameters

in1	the input stream to be subtracted. (input)
in2	the input stream with subtraction values. (input)
out	the output stream. (output)
len	the length of the input stream.

Returns: the output stream if successfull elaboration. NULL if an error is encountered. Return 0 if success. Return -1 if any error occurs.

◆ dspau_sub1()

DLL_EXPORT int dspau_sub1	(	double *	in,
		double *	out,
		int	len,
		double	val
	)

Subtract a value from elements of the input stream.

Parameters

in	the Numerators input stream. (input)
out	the output stream. (output)
len	the length of the input stream.
val	the value to be subtracted.

Returns: the output stream if successfull elaboration. NULL if an error is encountered. Return 0 if success. Return -1 if any error occurs.

◆ dspau_sum()

DLL_EXPORT int dspau_sum	(	double *	in1,
		double *	in2,
		double *	out,
		int	len
	)

Sum elements of one stream to another's.

Parameters

in1	the first input stream. (input)
in2	the second input stream. (input)
out	the output stream. (output)
len	the length of the input stream.

Returns: the output stream if successfull elaboration. NULL if an error is encountered. Return 0 if success. Return -1 if any error occurs.

◆ dspau_sum1()

DLL_EXPORT int dspau_sum1	(	double *	in,
		double *	out,
		int	len,
		double	val
	)

Sum elements of the input stream to a value.

Parameters

in	the first input stream. (input)
out	the output stream. (output)
len	the length of the input stream.
val	the value used for this operation.

Returns: the output stream if successfull elaboration. NULL if an error is encountered. Return 0 if success. Return -1 if any error occurs.

◆ dspau_u16todouble()

DLL_EXPORT int dspau_u16todouble	(	unsigned short int *	in,
		double *	out,
		int	len
	)

Convert a 16bit unsigned array into a double array.

Parameters

in	the input stream. (input)
out	the output stream. (output)
len	the length of the input stream.

Returns: the output stream if successfull elaboration. NULL if an error is encountered. Return 0 if success. Return -1 if any error occurs.

◆ dspau_u32todouble()

DLL_EXPORT int dspau_u32todouble	(	unsigned int *	in,
		double *	out,
		int	len
	)

Convert a 32bit unsigned array into a double array.

Parameters

in	the input stream. (input)
out	the output stream. (output)
len	the length of the input stream.

Returns: the output stream if successfull elaboration. NULL if an error is encountered. Return 0 if success. Return -1 if any error occurs.

◆ dspau_u64todouble()

DLL_EXPORT int dspau_u64todouble	(	unsigned long int *	in,
		double *	out,
		int	len
	)

Convert a 64bit unsigned array into a double array.

Parameters

in	the input stream. (input)
out	the output stream. (output)
len	the length of the input stream.

Returns: the output stream if successfull elaboration. NULL if an error is encountered. Return 0 if success. Return -1 if any error occurs.

◆ dspau_u8todouble()

DLL_EXPORT int dspau_u8todouble	(	unsigned char *	in,
		double *	out,
		int	len
	)

Convert an 8bit unsigned array into a double array.

Parameters

in	the input stream. (input)
out	the output stream. (output)
len	the length of the input stream.

Returns: the output stream if successfull elaboration. NULL if an error is encountered. Return 0 if success. Return -1 if any error occurs.

Macros

Enumerations

Functions

Macro Definition Documentation

◆ DLL_EXPORT

◆ M_PI

◆ max

◆ min

Enumeration Type Documentation

◆ dspau_conversiontype

Function Documentation

◆ dspau_autocorrelate()

◆ dspau_bandpasscorrelate()

◆ dspau_bandpassfilter()

◆ dspau_bandrejectfilter()

◆ dspau_crosscorrelate()

◆ dspau_div()

◆ dspau_div1()

◆ dspau_doubletos16()

◆ dspau_doubletos32()

◆ dspau_doubletos64()

◆ dspau_doubletos8()

◆ dspau_doubletou16()

◆ dspau_doubletou32()

◆ dspau_doubletou64()

◆ dspau_doubletou8()

◆ dspau_highpassfilter()

◆ dspau_lowpassfilter()

◆ dspau_mean()

◆ dspau_median()

◆ dspau_minmidmax()

◆ dspau_mul()

◆ dspau_mul1()

◆ dspau_normalize()

◆ dspau_removemean()

◆ dspau_s16todouble()

◆ dspau_s32todouble()

◆ dspau_s64todouble()

◆ dspau_s8todouble()

◆ dspau_spectrum()

◆ dspau_squarelawfilter()

◆ dspau_stretch()

◆ dspau_sub()

◆ dspau_sub1()

◆ dspau_sum()

◆ dspau_sum1()

◆ dspau_u16todouble()

◆ dspau_u32todouble()

◆ dspau_u64todouble()

◆ dspau_u8todouble()