DXApplyColorChannelLookupArray function

Applies a color channel lookup table to an array of DXBASESAMPLE structures.

Syntax

DXBASESAMPLE* DXApplyColorChannelLookupArray(
  _In_       DXBASESAMPLE  *pBuffer,
  _In_       unsigned long cSamples,
  _In_ const BYTE          *pAlphaTable,
  _In_ const BYTE          *pRedTable,
  _In_ const BYTE          *pGreenTable,
  _In_ const BYTE          *pBlueTable
);

Parameters

• pBuffer [in]
  A pointer to a source array of DXBASESAMPLE structures.

• cSamples [in]
  A value of type unsigned long that specifies the number of samples to convert.

• pAlphaTable [in]
  A pointer to a value of type BYTE that specifies the alpha channel lookup table.

• pRedTable [in]
  A pointer to a value of type BYTE that specifies the red lookup table.

• pGreenTable [in]
  A pointer to a value of type BYTE that specifies the green lookup table.

• pBlueTable [in]
  A pointer to a value of type BYTE that specifies the blue lookup table.

Return value

Returns a pointer to the converted array of DXBASESAMPLE structures.

Remarks

You can use this function to apply a separate lookup table to each color channel. Usually, you use the IDXLUTBuilder interface to create a lookup table, and the IDXLookupTable::GetTables method to fill the arrays. You can also create your own lookup table arrays.

Requirements