[asterisk-dev] chan_zap questions

[Klaus Darilion]

Armin Schindler wrote:
> On Wed, 12 Jul 2006, Klaus Darilion wrote:
>>> Maybe an additional subclass
>>> AST_CONTROL_AOC
>>> should be introduced.
>> Thats what I did and it works fine. But ast_indicate_data requires a
>> ast_channel as first parameter. If FACILITY is received on leg2, I have to
>> find out the ast_channel of leg 1 to indicate on the proper channel. Fur this
>> purpose I still use ast_bridged_call. Any other suggestion?
> 
> No, don't use ast_indicate*() directly, just use the normal *read function 
> to give this CONTROL frame to asterisk. The asterisk code (bridge or 
> dial-before-bridge) will forward this CONTROL frame to the other leg. 

Hi Armin!

How are the frames handled in Asterisk - synchron or asynchron? For 
example, in chap_zap I allocate a buffer, and queue a control frame 
whose data member points to the buffer. Once chan_zap receives the 
control_frame, it will read data from this buffer. Is this safe?

regards
klaus

>  
>> during processing of case PRI_EVENT_FACNAME:
>> struct ast_channel *otherchan;
>> otherchan = ast_bridged_channel(pri->pvts[chanpos]->owner);
>> if (otherchan && (!strcmp(otherchan->tech->type, "Zap"))) {
>> /* Only for Zap channels */
>> ast_indicate_data(otherchan, AST_CONTROL_AOCD, &aocd,
>>                  sizeof(struct aocd_data));
> 
> Yes, that's the direct way, but you don't need that. See above.
> 
> Armin
> 
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