[Freeswitch-dev] Pointer to memory pool not always passed when calling switch_core_speech_open()

[Anthony Minessale]

On Tue, Mar 17, 2020 at 1:47 AM SanveanRu . <fokin.denis at gmail.com> wrote:

> Hi, list!
>
> I am currently studying the internals of TTS features in Freeswitch.
> There is an unclear moment:
> switch_core_speech_open() is called from several locations, but pointer to
> session's memory pool is not always passed during the function call, namely:
> mod_rss.c -- passed
> conference_member.c -- passed
> mod_conference.c -- not passed
> mod_ssml.c -- not passed
> switch_ivr_play_say.c -- not passed
>
> Is there some rule or reason, that defines in which case pointer should be
> passed and in which not?
>
>
If you have a pool already you can pass it and it will be used but now that
pool has to outlast the object.
If you pass NULL, it creates its own pool internally.



> Passing pointer to the memory pool may be convenient way to provide speech
> handle with information about the session, that uses this handle.
> This may be useful when emitting log messages or events, that should be
> fired in context of some active session.
>

There is nothing in the pool but managed memory, you cannot access it or
anything like that, it has nothing to do with session data.


>
> PS Also, this pointer is always passed to switch_core_asr_open() call.
> --
> Denis Fokin
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-- 
Anthony Minessale II
Founder, FreeSWITCH.
http://freeswitch.com


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