IWICProgressiveLevelControl interface

Exposes methods for obtaining information about and controlling progressive decoding.

Members

The IWICProgressiveLevelControl interface inherits from the IUnknown interface. IWICProgressiveLevelControl also has these types of members:

Methods

The IWICProgressiveLevelControl interface has these methods.

MethodDescription
GetCurrentLevel

Gets the last level set by the SetCurrentLevel call.

GetLevelCount

Gets the number of levels of progressive decoding supported by the CODEC.

SetCurrentLevel

Specifies the level to retrieve on the next call to CopyPixels.

 

Remarks

Images can only be progressively decoded if they were progressively encoded. Progressive images automatically start at the highest (best quality) progressive level. The caller must manually set the decoder to a lower progressive level.

E_NOTIMPL is returned if the codec does not support progressive level decoding.

Requirements

Minimum supported client

Windows 7, Windows Vista with SP2 and Platform Update for Windows Vista [desktop apps | Windows Store apps]

Minimum supported server

Windows Server 2008 R2, Windows Server 2008 with SP2 and Platform Update for Windows Server 2008 [desktop apps | Windows Store apps]

Header

Wincodec.h

IDL

Wincodec.idl

DLL

Windowscodecs.dll

See also

Conceptual
Progressive Decoding Overview
WIC Progressive Decoding Sample

 

 

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