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[qingbaibai <question181462@xxxxxxxxxxxxxxxxxxxxx>]

New question #181462 on rohc:
https://answers.launchpad.net/rohc/+question/181462

hello,

I test file pcap of voip in samples. I get results of "feedback curr -12" and "feedback curr 0". I don't read the rohc library source code in detail. Follow is the related source code in rohc_decomp.c:
1       default:	   /* ROHC_OK_NO_DATA, ROHC_OK */
2			decomp->curval -= decomp->okval; /* framework (S-NACK) */
3			ddata.active->curval -= decomp->okval; /* context (NACK) */
4			rohc_debugf(2, "feedback curr %d\n", ddata.active->curval);     
5			if(decomp->curval < 0)
6				decomp->curval = 0;
7
8			if(ddata.active->curval < 0)
9				ddata.active->curval = 0;
10
11			rohc_debugf(2, "feedback curr %d\n", ddata.active->curval);
12			if(decomp->compressor != NULL && ddata.active->mode == U_MODE)
13			{
14				/* switch active context to O-mode */
15				ddata.active->mode = O_MODE;
16				d_operation_mode_feedback(decomp, ROHC_OK, ddata.cid, ddata.addcidUsed,
17				                          ddata.largecidUsed, ddata.active->mode,
18				                          ddata.active);
19			}

"feedback curr -12" corresponding to line 4
"feedback curr 0" corresponding to line 11
Thank you.

Regards,
qingbaibai

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