Thanks, Bill! I was afraid I'd overlooked the obvious.
Copying the struct (and the enum) to my code file enabled reading current_op.
(I had just done this before reading your reply)
What would go wrong if there was a macro taking the header file, the name (instance), the name (type), and member variable of a structure and returning the named member of the named struct?
This wouldn't necessarily be a change to all of pjsip/pjsua/pjmedia, rather it should create a file to be compiled with pjlibs. It would be a different file for each app using pjlibs because different apps need access to different elements of hidden structs.
________________________________
From: pjsip [pjsip-bounces@xxxxxxxxxxxxxxx] on behalf of Bill Gardner [billg at wavearts.com]
Sent: Wednesday, January 21, 2015 10:28 AM
To: pjsip at lists.pjsip.org
Subject: Re: (no subject)
Hi Brian,
The PJSIP code hides many of the structure definitions by defining only the type in the header,
while the actual structure is defined in the C file that implements the methods. This is akin
to having private members in a C++ class.
In your example regc->current_op is not defined in the header. You can modify the code by moving
the structure definition into the header (making the declaration public), or define an accessor method
to get the value of current_op.
Regards,
Bill
On 1/21/2015 9:42 AM, Brunner, Brian T. wrote:
On Wed May 15 22:41:44 EDT 2013
onmyway133 at gmail dot com said
"
@saltyfoam You can check for current_op in pjsip_regc
They can be in IDLE, REGISTERING, UNREGISTERING
"
My attempts to access and test current_op fail.
I have read online documentation and source code for a few days.
Here is where I am stopped:
#include <pjsip-ua/sip_regc.h>
void cb_on_reg_state2 (pjsua_acc_id acc_id, pjsua_reg_info *info)
{
PJ_LOG(3,(__FILE__, "%s: Account %d Reason %.*s Status %d CurrentOp %d",
__FUNCTION__, acc_id, info->cbparam->reason.slen, info->cbparam->reason.ptr,
info->cbparam->status, info->cbparam->regc->current_op ));
}
error: invalid use of incomplete type 'pjsip_regc {aka struct pjsip_regc}'
__FUNCTION__, acc_id, info->cbparam->reason.slen, info->cbparam->reason.ptr, info->cbparam->status, info->cbparam->regc->current_op ));
The compiler declares struct pjsip_regc to be an incomplete type.
/usr/include/pjsip-ua/sip_regc.h only gives a typedef struct pjsip_regc pjsip_regc; the structure definition is only in pjsip/src/pjsip-ua/sip_reg.c
So, how do I inform the compiler where to get current_op?
The brute-force method looks to be moving the pjsip_regc structure declaration into the header file ahead of the typedef, and removing it from the source file.
Clues begged piteously.
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