Alain,
On 12/19/2011 05:20 AM, Alain Totouom wrote:
> the splitter port is the one connected to the bridge. That port is
> in sync with the bridge. You'll use it's slot ID to do the mixing.
> The reverse port is the port you'll async and exclusively read/write
> from/to.
> The bridge is just aware of the splitter (slot)...
>
> pjmedia_port* sc, *rev;
> int slot;
> pjmedia_splitcomb_create(...,&sc);
> pjmedia_splitcomb_create_rev_channel(pool,sc,..,&rev);
> pjsua_conf_add_port(.., sc,&slot);
Understood. In that case, I understood your original post correctly
and did all this.
> /* async write */
> pjmedia_frame rdf;
> rdf.buf = ..;
> rdf.size= ..;
> rdf.type= ..;
> pjmedia_port_put_frame (rev,&rdf);
I think here is where I am running into the problem. I don't produce
the frames endogenously within this async write function; instead,
they come from the outside, read from a PCAP packet capture, and
RTP-decoded into PCM frames in the usual manner. So, I'm doing
something like this with the PCM frames in that capture processing loop:
while(RTP decode into PCM frames and such into &frame) {
pjmedia_put_frame(&merge_port, &frame);
}
And here's how I have implemented the 'merge_port':
pjmedia_port merge_port;
pj_str_t merge_port_name = pj_str("merge");
...
memset(&merge_port, 0, sizeof(pjmedia_port));
...
pj_strdup2(pool, &merge_port.info.name, "merge_player");
merge_port.get_frame = &merge_get_frame;
merge_port.put_frame = &merge_put_frame;
pjmedia_port_info_init(&merge_port.info, &merge_port_name,
0x1, 8000, 1, 16, (8000 * PTIME) / 1000);
And the callbacks for 'merge_port':
static pj_status_t merge_get_frame(pjmedia_port *port,
pjmedia_frame *f)
{
return PJ_EINVALIDOP;
}
static pj_status_t merge_put_frame(pjmedia_port *port,
const pjmedia_frame *f)
{
if(f->size == 0)
return PJ_SUCCESS;
return pjmedia_port_put_frame(conf_port, f);
}
And here is what I end up with:
recombine: ../src/pjmedia/splitcomb.c:742: rport_put_frame: Assertion
`frame->size == this_port->info.bytes_per_frame' failed.
A little backtracing reveals:
#6 0x0000000000404d90 in merge_put_frame (port=0x241, f=0x0)
at media_proc.c:653
So, for some reason it's getting a NULL frame. Any idea what I'm
doing wrong?
--
Alex Balashov - Principal
Evariste Systems LLC
260 Peachtree Street NW
Suite 2200
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