L_LTKRN_API L_INT L_Resize(pBuffer, nRow, nBitsPerPixel, pXSize, pYSize, pResizeData)
Resizes a buffer to the new size specified with the L_StartResize function.
Pointer to the buffer containing a line from the original image to be resized. Your code must allocate the buffer and copy the data into it before calling this function.
The same buffer holds the data before and after it is resized. Therefore, the buffer must be big enough to hold whichever is larger. (The original line is larger when reducing an image; the resulting line is larger when enlarging the image.)
Current row of the original bitmap.
Bits per pixel, which is the same for the original and the resized bitmap.
Address of an integer variable to be updated with the width of the resized line. This function updates the variable with number of pixels the new line was sized to.
Address of an integer variable to be updated with the required number of copy repetitions. This function updates the variable with the number of times needed to copy the new resized line buffer to the new image.
A value of 0 means that the line should not be copied. A value of 1 means that the line should be copied once. A value of 2 means that the line should be copied twice.
Pointer to the data packet used in L_StartResize. If L_Resize is called from within a callback procedure, then it is recommended that you pass pResizeData as part of your user data parameter in the callback procedure. This is required to prevent the loss of the address of pResizeData if the segment is changed in a 16-bit operating system.
|>= 0||The value of the pYSize parameter, indicating the number of times the line was copied.|
|< 0||An error occurred. Refer to Return Codes.|
Before calling this function, you must do the following:
pBufferto hold each line. The same buffer holds the data before and after it is resized. Therefore, the buffer must be big enough to hold whichever is larger. (The original line is larger when reducing an image; the resulting line is larger when enlarging the image.)
pYSize, which this function will update with information about the compressed line of data.
When all lines have been processed, you must call L_StopResize.
Required DLLs and Libraries
Win32, x64, Linux.
For an example, refer to L_StartResize. For complete sample code, refer to the RESIZE example.
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