[pulseaudio-discuss] sink-input.c: pa_sink_input_new vs PA_CORE_HOOK_SINK_INPUT_FIXATE
lennart at poettering.net
Sun Jun 8 15:58:28 PDT 2008
On Fri, 16.05.08 09:58, Nick Thompson (rextanka at comcast.net) wrote:
Sorry for the late response!
> I'm writing a module to tag streams so that a routing policy can be
> implemented. Tanu suggested a mechanism by which I can get called
> back each time a new sink-input comes in and this mechanism works,
> however I'm having an issue trying to access the index for the stream.
> The index is not assigned until the end of pa_sink_input_new where the
> data passed in has been verified. Long after FIXATE. Here's a bit of
> There are two hooks in pa_sink_input_new (which is implemented in sink-
You are aware of PA_CORE_HOOK_SINK_INPUT_PUT? It's called when the
sink input is actually made available to the PA system, i.e. after
creation and after the code implementing the sink input actaully
filled in all method pointers.
> Would moving FIXATE towards the end of the routine be appropriate (I
> suspect that moving it could have undesirable side effects if external
> hook functions in people's modules were relying on returning anything
> other than PA_HOOK_OK, or in further manipulating data. However
> manipulating the data after it's been verified is a potentially risky
No. FIXATE is there to do fixation of the sink input parameters. What
you really want is the _PUT hook, as far as I understood your problem.
Lennart Poettering Red Hat, Inc.
lennart [at] poettering [dot] net ICQ# 11060553
http://0pointer.net/lennart/ GnuPG 0x1A015CC4
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