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Does 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.
#include "l_bitmap.h"
L_LTKRN_API L_INT L_ExpandRow(pRunBuffer, pBuffer, nCol, nWidth)
Pointer to the input buffer containing 1-bit compressed image data.
Pointer to the output buffer, which is to be filled with 1-bit image data. Use integer math to calculate the required size of this buffer as follows: bytes required = ( nWidth + 7) / 8.
Column offset within the row to be processed. The function skips this many pixels before it begins processing.
The number of pixels to process.
| Value | Meaning |
|---|---|
| > 0 | The number of pixels processed. |
| < 1 | An error occurred. Refer to Return Codes. |
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.
Win32, x64, Linux.
For an example, refer to L_PutBitmapRowColCompressed.
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