Re: in memory jpeg destination and source managers

OK, I could figure it out. I was calling jpeg_write_tables and this
call was adding the tables to my buffer a bit to early. It's better to
omit jpeg_write_tables and to call jpeg_suppress_tables(&cinfo, FALSE).
Then the first call to jpeg_write_scanlines will add the tables.

Christian


chhenning@xxxxxxxxx wrote:
Hi there, I have a problem with my own jpeg destination and source
managers. My goal is to compressed a jpeg buffer from an rgb buffer.
And also the vice versa. The compressed buffer created by the
destination manager starts with FFDB ( the quantization table ) rather
than with FFD8 ( Start of image ). When I try to get to my rgb buffer
the application crashes when calling jpeg_read_header.

I think the compressed buffer has all the necessary sections, but they
are ordered somehow in a weird way. Is that normal?

If you are interessted in the source code ( C ), let me know.

Thanks ahead,
Christian

.

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