Copyright © 2001-2018 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 and 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]

control.StreamVolumeSmoothingSetEx (

nPlayer as Integer,

bfadeIn as enumBoolean,

nSlideDuration as Long,

nCurveType as enumVolumeCurves,

nLeftX as Integer,

nLeftY as Integer,

nRightX as Integer,

nRightY as Integer

) as enumErrorCodes


 

[C++]

short control.StreamVolumeSmoothingSetEx (

short nPlayer,

short bfadeIn,

long nSlideDuration,

short nCurveType,

short nLeftX,

short nLeftY,

short nRightX,

short nRightY

);


 

 

Parameter

Description

 

 

nPlayer

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

amp3dj_i000090

VOLUME_CURVE_EXPONENTIAL

2

Exponential curve

amp3dj_i000091

VOLUME_CURVE_COSINE

3

Cosine curve

amp3dj_i000092

VOLUME_CURVE_SMOOTH

4

Smooth curve

amp3dj_i000093

VOLUME_CURVE_CUSTOM

5

Custom Bézier curve.

amp3dj_i000094

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.

 

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Return value

 

Value

Meaning

 

 

Negative value

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

enumErrorCodes.ERR_NOERROR (0)

The method call was successful.