AAX_CommonConversions.h File Reference

#include <math.h>
#include "AAX.h"

Go to the source code of this file.

Functions
double	GainToDB (double aGain)
	Convert Gain to dB.
double	DBToGain (double dB)
	Convert dB to Gain.
double	LongToDouble (int32_t aLong)
	Convert Long to Double.
int32_t	DoubleToLong (double aDouble)
	convert floating point equivalent back to int32_t
int32_t	DoubleToDSPCoef (double d, double max=k56kFloatPosMax, double min=k56kFloatNegMax)
	Convert Double to DSPCoef.
double	DSPCoefToDouble (int32_t c, int32_t max=k56kFracPosMax, int32_t min=k56kFracNegMax)
	Convert DSPCoef to Double.
double	ThirtyTwoBitDSPCoefToDouble (int32_t c)
	ThirtyTwoBitDSPCoefToDouble.
int32_t	DoubleTo32BitDSPCoefRnd (double d)
	DoubleTo32BitDSPCoefRnd.
int32_t	DoubleTo32BitDSPCoef (double d)
int32_t	DoubleToDSPCoefRnd (double d, double max, double min)

Variables
const int32_t	k32BitPosMax = 0x7FFFFFFF
const int32_t	k32BitAbsMax = 0x80000000
const int32_t	k32BitNegMax = 0x80000000
const int32_t	k56kFracPosMax = 0x007FFFFF
const int32_t	k56kFracAbsMax = 0x00800000
const int32_t	k56kFracHalf = 0x00400000
const int32_t	k56kFracNegOne = 0xFF800000
const int32_t	k56kFracNegMax = k56kFracNegOne
const int32_t	k56kFracZero = 0x00000000
const double	kOneOver56kFracAbsMax = 1.0/double(k56kFracAbsMax)
const double	k56kFloatPosMax = double(k56kFracPosMax)/double(k56kFracAbsMax)
const double	k56kFloatNegMax = -1.0
const double	kNeg144DB = -144.0
const double	kNeg144Gain = 6.3095734448019324943436013662234e-8

Function Documentation

GainToDB()

double GainToDB ( double  aGain )

inline

Convert Gain to dB.

Todo:

This should be incorporated into parameters' tapers and not called separately

References kNeg144DB.

DBToGain()

double DBToGain ( double  dB )

inline

Convert dB to Gain.

Todo:

This should be incorporated into parameters' tapers and not called separately

LongToDouble()

double LongToDouble ( int32_t  aLong )

inline

Convert Long to Double.

LongToDouble: convert 24 bit fixed point in a int32_t to floating point equivalent

References k56kFracNegMax, k56kFracPosMax, and kOneOver56kFracAbsMax.

DoubleToLong()

int32_t DoubleToLong

(

double

aDouble

)

convert floating point equivalent back to int32_t

DoubleToDSPCoef()

int32_t DoubleToDSPCoef ( double  d, double  max = k56kFloatPosMax, double  min = k56kFloatNegMax  )

inline

Convert Double to DSPCoef.

References k56kFracAbsMax, k56kFracNegMax, and k56kFracPosMax.

Referenced by DoubleTo32BitDSPCoefRnd().

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DSPCoefToDouble()

double DSPCoefToDouble ( int32_t  c, int32_t  max = k56kFracPosMax, int32_t  min = k56kFracNegMax  )

inline

Convert DSPCoef to Double.

References k56kFracNegMax, k56kFracPosMax, and kOneOver56kFracAbsMax.

Referenced by ThirtyTwoBitDSPCoefToDouble().

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ThirtyTwoBitDSPCoefToDouble()

double ThirtyTwoBitDSPCoefToDouble ( int32_t  c )

inline

ThirtyTwoBitDSPCoefToDouble.

References DSPCoefToDouble(), k32BitNegMax, and k32BitPosMax.

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DoubleTo32BitDSPCoefRnd()

int32_t DoubleTo32BitDSPCoefRnd ( double  d )

inline

DoubleTo32BitDSPCoefRnd.

References DoubleToDSPCoef(), k32BitNegMax, and k32BitPosMax.

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DoubleTo32BitDSPCoef()

int32_t DoubleTo32BitDSPCoef

(

double

d

)

DoubleToDSPCoefRnd()

int32_t DoubleToDSPCoefRnd	(	double	d,
		double	max,
		double	min
	)

Variable Documentation

k32BitPosMax

const int32_t k32BitPosMax = 0x7FFFFFFF

Referenced by DoubleTo32BitDSPCoefRnd(), and ThirtyTwoBitDSPCoefToDouble().

k32BitAbsMax

const int32_t k32BitAbsMax = 0x80000000

k32BitNegMax

const int32_t k32BitNegMax = 0x80000000

Referenced by DoubleTo32BitDSPCoefRnd(), and ThirtyTwoBitDSPCoefToDouble().

k56kFracPosMax

const int32_t k56kFracPosMax = 0x007FFFFF

Referenced by DoubleToDSPCoef(), DSPCoefToDouble(), and LongToDouble().

k56kFracAbsMax

const int32_t k56kFracAbsMax = 0x00800000

Referenced by DoubleToDSPCoef().

k56kFracHalf

const int32_t k56kFracHalf = 0x00400000

k56kFracNegOne

const int32_t k56kFracNegOne = 0xFF800000

k56kFracNegMax

const int32_t k56kFracNegMax = k56kFracNegOne

Referenced by DoubleToDSPCoef(), DSPCoefToDouble(), and LongToDouble().

k56kFracZero

const int32_t k56kFracZero = 0x00000000

kOneOver56kFracAbsMax

const double kOneOver56kFracAbsMax = 1.0/double(k56kFracAbsMax)

Referenced by DSPCoefToDouble(), and LongToDouble().

k56kFloatPosMax

const double k56kFloatPosMax = double(k56kFracPosMax)/double(k56kFracAbsMax)

k56kFloatNegMax

const double k56kFloatNegMax = -1.0

kNeg144DB

const double kNeg144DB = -144.0

Referenced by GainToDB().

kNeg144Gain

const double kNeg144Gain = 6.3095734448019324943436013662234e-8