[pulseaudio-discuss] Pause a audio stream

[sathishkumar sivagurunathan]

Thanks Tanu,



I followed your instructions. I was able to solve this problem. I had made
the new function “GLOBAL”. I edited the “map-file” in src folder of
pulseaudio to include the newly created function.



I was also able to successfully compile my test program too..



But when I run the binary, I am getting relocation error..



./pa_listclients_pause: relocation error: ./pa_listclients_pause: symbol
pa_context_set_sink_input_paused, version PULSE_0 not defined in file
libpulse.so.0 with link time reference



I am not able to understand this error..



Can someone help me with this,



Thanks,

Sathish


On 20 December 2013 18:21, Tanu Kaskinen <tanu.kaskinen at linux.intel.com>wrote:

> [Why is every line that you write prefixed with ">"? That's usually only
> used for quoted text.]
>
> On Fri, 2013-12-20 at 09:48 +0530, sathishkumar sivagurunathan wrote:
> > >
> > > Hi ,
> > >
> > > I am trying to add a new function "pa_context_set_sink_input_paused" to
> > the pulseaudio introspect.c file. I was able to able and successfully
> > compile pulseaudio too..
> > >
> > > gcc pa_listclients_pause.c -o pa_listclients_pause -L
> > /home/sathish/Desktop/pulseaudio-4.0/build/src/.libs/ -lpulse
> > >
> > > /tmp/ccueP47b.o: In function `pa_get_devicelist':
> > >
> > > pa_listclients_pause.c.text+0x6cb): undefined reference to
> > `pa_context_set_sink_input_paused'
> > >
> > > collect2: error: ld returned 1 exit status
> > >
> > > But when I try to run a program using this new function, it returns me
> > "undefined reference".
> > >
> > > I tried to run the nm command and check whether the new function is
> > present in libpulse.so
> > >
> > > The function returns me it has found it..
> > >
> > > nm -A *.so | grep "pa_context_set_sink_input_paused"
> > >
> > > libpulse.so:0001d4a0 t pa_context_set_sink_input_paused
> > >
> > > I am not able to comprehend what is happening. Can you help me with
> this
> > ??
>
> Notice the "t" in the nm output. It means that the symbol is in the text
> (code) section, but more importantly, it means that the symbol is local
> to the library, not exported to outside world. An exported symbol would
> have upper case "T".
>
> The most likely reason why the symbol isn't exported is that you didn't
> add the new function to src/map-file. All functions in libpulse that are
> supposed to be used by applications need to be added to src/map-file.
>
> --
> Tanu
>
>
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