How do I read source data from a FILE* ?

[Nikos Chantziaras]

On 31/05/13 22:50, Carlos Rafael Giani wrote:
> On 2013-05-31 21:39, Nikos Chantziaras wrote:
>> Hello, everyone.
>>
>> I'm using QtGStreamer 0.10.2 with GStreamer 0.10.36.  It works nicely
>> when loading media data from files
>>  [...]
>> But I cannot find any information on how to have a FILE* as a source,
>> where the media data only starts at some specific offset and has a
>> specific length.
>
> You could do this indirectly, by using fdsrc . It expects a Unix file
> descriptor , which is an integer. use the fileno() function to get a
> file descriptor out of FILE*.

I need to also be compatible with Windows.  I suppose _fileno() would 
work there.

But looking at the docs of playbin2, the "source" property is read-only. 
  It doesn't appear I can set it to an fdsrc?