[Live-devel] Getting the JPEG payload from a JPEG file

[Andy Bell]

Hi,

I have used the 'Elphel' code to build a simple RTSP server which streams a
fixed JPEG frame.  I want to be able to configure the RTSP server to use a
specific JPEG file on disk.  The problem I have is that different JPEG files
have different header sizes and I want to work out how I can work out where
the header ends and where the payload begins.  Looking at the header I can
locate the start of the scan using the marker 0xFFDA, but even when I send
this back to the client I don't get a valid image.  As I am using a JPEG
file I have no idea of the Q factor so I have set this to 100 for the time
being.   Is there any code out there which can help me break up a JPEG file
from disk and stream it back to the client?  If not, where am I going wrong?


Thanks
Andy
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