Copyright © 2005-2018 MultiMedia Soft

StreamVolumeSmoothingSetEx method

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Remarks

 

Sets the smoothing times, expressed in milliseconds, and related volume curve required to perform a fade-in after a PlaySound call or a fade-out after a StopSound call.

During the fading session the following events may be generated:

 

FadeInStarted, FadingVolumeChanged and FadeInCompleted after a call to the PlaySound method
FadeOutStarted, FadingVolumeChanged and FadeOutCompleted after a call to the StopSound method

 

 

Syntax

 

[Visual Basic]

Public Function StreamVolumeSmoothingSetEx (

nPlayerIndex as Int16,

bfadeIn as Boolean,

nSlideDuration as Int32,

nCurveType as enumVolumeCurves,

nLeftX as Int16,

nLeftY as Int16,

nRightX as Int16,

nRightY as Int16

) as enumErrorCodes


 

[C#]

public enumErrorCodes StreamVolumeSmoothingSetEx (

Int16 nPlayerIndex,

bool bfadeIn,

Int32 nSlideDuration,

enumVolumeCurves nCurveType,

Int16 nLeftX,

Int16 nLeftY,

Int16 nRightX,

Int16 nRightY

);


 

[C++]

public: enumErrorCodes StreamVolumeSmoothingSetEx (

Int16 nPlayerIndex,

bool bfadeIn,

Int32 nSlideDuration,

enumVolumeCurves nCurveType,

Int16 nLeftX,

Int16 nLeftY,

Int16 nRightX,

Int16 nRightY

);


 

 

Parameter

Description

 

 

nPlayerIndex

Number representing the zero-based index of the involved player

bfadeIn

Boolean value indicating if the smoothing, obtained through a volume sliding. must be applied on start or stop of playback.

Supported values are the following:

Mnemonic constant

Meaning

false

The volume slide setting is intended as a fade-out activated when the StopSound method is invoked.

true

The volume slide setting is intended as a fade-in activated when the PlaySound method is invoked.

nSlideDuration

The time required to perform the volume sliding after a call to the PlaySound or StopSound method.

Accepted values are from 0 (default value, no sliding, immediate play or stop) to 20000: higher or lower values will be automatically cut to the nearest supported value.

nCurveType

Type of curve applied to the volume sliding.

Supported values are the following:

Mnemonic constant

Value

Meaning

 

 

 

VOLUME_CURVE_LINEAR

1

Linear curve

adjstudnet_i000086

VOLUME_CURVE_EXPONENTIAL

2

Exponential curve

adjstudnet_i000087

VOLUME_CURVE_COSINE

3

Cosine curve

adjstudnet_i000088

VOLUME_CURVE_SMOOTH

4

Smooth curve

adjstudnet_i000089

VOLUME_CURVE_CUSTOM

5

Custom Bézier curve.

adjstudnet_i00008a

nLeftX

The horizontal position, expressed in percentage of the custom curve designer's area, of the left control point (*). This parameter is ignored if the nScaleType parameter above has been set to a value different from VOLUME_CURVE_CUSTOM.

nLeftY

The vertical position, expressed in percentage of the custom curve designer's area, of the left control point (*). This parameter is ignored if the nScaleType parameter above has been set to a value different from VOLUME_CURVE_CUSTOM.

nRightX

The horizontal position, expressed in percentage of the custom curve designer's area, of the right control point (*). This parameter is ignored if the nScaleType parameter above has been set to a value different from VOLUME_CURVE_CUSTOM.

nRightY

The vertical position, expressed in percentage of the custom curve designer's area, of the right control point (*). This parameter is ignored if the nScaleType parameter above has been set to a value different from VOLUME_CURVE_CUSTOM.

 

(*) The custom curve designer manages a windowed control, whose visual aspect can be defined programmatically, which allows designing volume curves based upon Bézier curves whose shape is defined through the manual positioning of 2 control points (displayed in cyan color on the graphic below). For further information about the use of the embedded CurveDesigner refer to the tutorial How to create custom volume curves.

 

 

 

Return value

 

Value

Meaning

 

 

Negative value

An error occurred (see the LastError property for further error details)

enumErrorCodes.NOERROR (0)

The method call was successful.