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Does buffer-to-buffer decompression of RLE-compressed 1-bit image data. Use this function to process multiple lines of image data.
#include "l_bitmap.h"
L_LTKRN_API L_INT L_ExpandRows(pRun, pBuffer, nWidth, nRows)
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. 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.
The number of pixels in each row.
The number of rows 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_GetBitmapRowCompressed.
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