[pulseaudio-discuss] dynamic routing through pulse audio

[Himanshu Chug]

perfect!  beep! is up and working fine. :) kudos .. my credit goes to you
Colin for giving me directions... Thankyou once again :)

Best Regards,
Himanshu


On Thu, Jun 9, 2011 at 3:09 PM, Colin Guthrie <gmane at colin.guthr.ie> wrote:

> Hi,
>
> I think my first reply failed to send and couldn't find the text
> anywhere... Damn :(
>
>
> 'Twas brillig, and Himanshu Chug at 09/06/11 07:18 did gyre and gimble:
> > I changed the sample role from proplist in play_beep( ) below:
> >
> > static void play_beep(pa_core *core)
> > {
> >     uint32_t idx;
> >     pa_proplist *pl = pa_proplist_new ();
> >     pa_proplist_sets(pl, PA_PROP_MEDIA_ROLE, "test");
> >     pa_log ("DBG: %s: %d\n", __func__, __LINE__);
> >     pa_scache_play_item(core, "beep", "alsa_output.hw_0_0",
> > PA_VOLUME_NORM, pl, &idx);
> > }
>
> Ok some points.
>
>  1) If you don't need the idx, just pass NULL. That's what other
> examples in the code tree do. Look at the other examples for inspiration
> here.
>
>  2) You do not call pa_proplist_free() and thus this is leaky code.
>
>  3) You pass a string when the function expects a pa_sink*. If you want
> to pass a name use pa_scache_play_item_by_name() instead. I'm very
> surprised the above even compiles. You will almost certainly have a
> pa_sink* when you call this function so I'd suggest using it. You may
> also want to chose a slightly less evil volume than PA_VOLUME_NORM, but
> this can obviously be tweaked later!
>
> > Here are the logs for segmentation fault:
> >
> > D: module-augment-properties.c: Looking for .desktop file for
> > gst-launch-0.10
> > D: memblockq.c: memblockq requested: maxlength=33554432, tlength=0,
> > base=4, prebuf=0, minreq=1 maxrewind=0
> > D: memblockq.c: memblockq sanitized: maxlength=33554432,
> > tlength=33554432, base=4, prebuf=0, minreq=4 maxrewind=0
> > I: sink-input.c: Created input 1 "Playback Stream" on alsa_output.hw_0_0
> > with sample spec s16le 2ch 44100Hz and channel map front-left,front-right
> > I: sink-input.c:     media.role = "event"
> > I: sink-input.c:     media.name <http://media.name> = "Playback Stream"
> > I: sink-input.c:     application.name <http://application.name> =
> > "gst-launch-0.10"
> > I: sink-input.c:     native-protocol.peer = "UNIX socket client"
> > I: sink-input.c:     native-protocol.version = "16"
> > I: sink-input.c:     application.process.id
> > <http://application.process.id> = "2465"
> > I: sink-input.c:     application.process.user = "root"
> > I: sink-input.c:     application.process.host = "(none)"
> > I: sink-input.c:     application.process.binary = "gst-launch-0.10"
> > I: sink-input.c:     application.language = "C"
> > I: sink-input.c:     window.x11.display = ":0"
> > I: sink-input.c:     application.process.machine_id = "(none)"
> > I: sink-input.c:     module-stream-restore.id
> > <http://module-stream-restore.id> = "sink-input-by-media-role:event"
> > I: protocol-native.c: Requested tlength=200.00 ms, minreq=10.00 ms
> > D: protocol-native.c: Adjust latency mode enabled, configuring sink
> > latency to half of overall latency.
> > D: memblockq.c: memblockq requested: maxlength=4194304, tlength=19404,
> > base=4, prebuf=0, minreq=1764 maxrewind=0
> > D: memblockq.c: memblockq sanitized: maxlength=4194304, tlength=19404,
> > base=4, prebuf=0, minreq=1764 maxrewind=0
> > I: protocol-native.c: Final latency 200.00 ms = 90.00 ms + 2*10.00 ms +
> > 90.00 ms
> > D: alsa-sink.c: Latency set to 90.00ms
> > D: alsa-sink.c: hwbuf_unused=115068
> > D: alsa-sink.c: setting avail_min=31855
> > *D: core-subscribe.c: Dropped redundant event due to change event.
> > E: module-cork-music-on-phone.c: DBG: play_beep: 62
> > E: core-scache.c: DBG: pa_scache_play_item: 314
> > Segmentation fault*
>
> You need to get a backtrace. Logging is more or less useless sadly.
>
> Run gdb -p `pidof pulseaudio`, then call the handle line as noted on the
> wiki: http://pulseaudio.org/wiki/Community, then use "continue" and
> trigger the crash. You'll then get a nice backtrace.
>
> Col
>
>
>
> --
>
> Colin Guthrie
> gmane(at)colin.guthr.ie
> http://colin.guthr.ie/
>
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>
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