LBuffer::ExpandRow

Summary

Performs buffer-to-buffer decompression of RLE-compressed 1-bit image data. Use this function to process all or part of a single line of image data.

Syntax

#include "ltwrappr.h"

virtual L_INT LBuffer::ExpandRow(LBufferSrc, nCol, nWidth)

Parameters

LBuffer& LBufferSrc

The input buffer containing 1-bit compressed image data.

L_UINT nCol

Column offset within the row to be processed. The function skips this many pixels before it begins processing.

L_INT nWidth

The number of pixels to process.

Returns

Value Meaning
0 The number of pixels processed.
< 1 An error occurred. Refer to Return Codes.

Comments

This function is useful for working with 1-bit images that are loaded in their compressed formats for faster loading and display. For more information, refer to Speeding Up 1-Bit Documents.

The parameter LBufferSrc is passed by reference, and is a required parameter.

Required DLLs and Libraries

Platforms

Win32, x64.

See Also

Functions

Topics

Example

For an example, refer to LBuffer::CompressRow.

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LEADTOOLS Raster Imaging C++ Class Library Help
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© 1991-2023 LEAD Technologies, Inc. All Rights Reserved.