"Morris Dovey" <mrdovey@[EMAIL PROTECTED]
> wrote in message
news:4821e36f$0$89866$815e3792@[EMAIL PROTECTED]
> jt wrote:
>> hey guys..
>> can anybody suggest a code tht would save the graphics image saved in
>> C to jpg file.
>> is it available in the net.
>> plz tell the links.
>
> If you already have the data in your C program, all you need to do is
use
> fopen() to open the file, fwrite() to move the data into the file, and
> fclose() to finish.
>
> Much easier than you were expecting, yes?
>
if you have a valid jpeg bitstream in the buffer, but if it is actual
graphical data (say, an image rendered into a buffer), then a little more
is
needed than this.
as noted by others, IJG's libjpeg is a common option for loading/saving
jpeg
files.
at least a few of us here have written custom load/save code as well (the
advantage of going this route is that one can do a single-file
implementation of the thing and avoid the dependency/liscense/bulk/...
issues involved with using a 3rd party library).
of course, be warned that writing code to encode/decode a jpeg bitstream
isn't exactly a newbie friendly task (at least a few of us are probably
also
likely to make such code available on request as well).
my particular case:
I can send my version if asked via email.
I have been using it fairly effectively for both encoding and decoding for
a
few years now.
it also has a faster encoder (lower quality/conpression tradeoff), which
was
tweaked mostly for the task of encoding images to be used in MJPEG videos
(basically, when I was trying to minimize the performance impact when
doing
real-time video recording/encoding in my apps, albeit glReadPixels is the
main bottleneck IME).
or such...
> --
> Morris Dovey
> DeSoto Solar
> DeSoto, Iowa USA
> http://www.iedu.com/DeSoto/
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