L_ExpandRows

#include "l_bitmap.h"

L_LTKRN_API L_INT L_ExpandRows(pRun, pBuffer, nWidth, nRows)

L_UINT16* pRun;	/* pointer to the input buffer */
L_UCHAR* pBuffer;	/* pointer to the output buffer */
L_UINT nWidth;	/* number of pixels in each row */
L_UINT nRows;	/* number of rows */

Does buffer-to-buffer decompression of RLE-compressed 1-bit image data. Use this function to process multiple lines of image data.

This function is available in the Document and Medical Imaging toolkits.

Parameter	Description
pRun	Pointer to the input buffer containing 1-bit compressed image data.
pBuffer	Pointer to the output buffer, which is to be filled with 1-bit image data. The size of each row must be rounded up to a multiple of 4 bytes. Use integer math to calculate the required size of this buffer as follows: bytes required = (((nWidth + 31) &~31)/ 8) * nRows.
nWidth	The number of pixels in each row.
nRows	The number of rows to process.

Returns

> 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.

Required DLLs and Libraries

LTKRN

For a listing of the exact DLLs and Libraries needed, based on the toolkit version, refer to Files To Be Included With Your Application.

Platforms

Windows 2000 / XP/Vista, Windows CE.

Functions:	L_CompressRow, L_ExpandRow, L_CompressRows, L_GetBitmapRowColCompressed, L_PutBitmapRowColCompressed, L_GetBitmapRowCompressed, L_PutBitmapRowCompressed
Topics:	Speeding Up 1-Bit Documents