On Wed, 20 Mar 2013, Choi wrote:
hello everyone!
It is about a function in api/baseapi.cpp.
void SetImage(const unsigned char* imagedata, int width,
int height,
int bytes_per_pixel, int bytes_per_line);
Is it possible that bytes_per_line not equal to
width*bytes_per_pixel ?
why this function needs bytes_per_line?
I'm sorry for my incorrect English.
If you understand my question and know about that, please
give me an answer.
Thanks.
Yes, it is possible that bytes_per_line does not equal
width*bytes_per_pixel. Some images must have bytes_per_line
a multiple of 4 bytes, and if, say, 2 or 3 bytes per pixel
is used, then it's possible to have extra space left over
at the end of the line. So, bytes_per_line is used to
get the position at the start of each line no matter
where the last line ended.
Cheers,
Rob Komar
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