function definitions

[CHIH HUNG HSIEH]

Hi Aleksander,

Thanks for the explanation. I still have lots questions about the function
definition in JSON database file. Take the function
"qmi_client_nas_get_system_info_finish()" as example

1. How is this function generated? I mean which section of the JSON
database defines this function call.



2014-02-11 15:54 GMT+08:00 Aleksander Morgado <aleksander at aleksander.es>:

> Hey hey,
>
> >
> > I'm new to libqmi and have some questions about the libqmi architecture:
> >
> > 1. Does libqmi follow the architecture designed by Qualcomm? I mean,
> what's
> > the QMUX layer in libqmi? qmi-proxy?
> >
>
> The QMUX layer is basically ignored; we just gather what's inside of
> the QMUX payload as a QMI message.
>
> The qmi-proxy is a process which gets auto-started by the user of
> libqmi, so that multiple user processes can talk to the /dev/cdc-wdm
> port at the same time. Qualcomm's original driver allowed this by
> managing different clients directly in the kernel driver; in our case
> we use the qmi-proxy to handle different clients. The approach with
> the qmi-proxy is completely optional, e.g. you can of course run
> libqmi without a qmi-proxy if only one process will take care of
> talking QMI in your system. See:
>
> http://sigquit.wordpress.com/2013/09/13/sharing-a-qmi-port-between-processes/
>
> > 2. Is it possible to add new functions in libqmi? Any suggestion?
> >
>
> Sure it is.
>
> > 3. I noticed that some function might be provided by a library. For
> example,
> > I didn't get the function prototype of
> > "qmi_message_nas_get_signal_strength_output_get_signal_strength
> >  ()". Did I miss something?
> >
>
> The code for all the messages is autogenerated at compile time, from
> the JSON database files available under /data. The code generator is
> under /build-aux/qmi-codegen.
>
> Adding support for new message is just about adding the correct
> message definitions in the JSON database. See:
>     http://sigquit.wordpress.com/2012/08/20/an-introduction-to-libqmi/
>
> --
> Aleksander
> https://aleksander.es
>
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