good "source" audio plugin template.

[Phil Pellouchoud]

I want to write a source plugin that takes a file of some proprietary format and spews out PCM data that a speaker sink destination could accept.

 

1.       What’s the best starting point for that?  Is there some code I can just pilfer from somewhere?

2.       Is there a generic cross-platform “speaker” sink (I don’t want to use DirectSound since that’s really MS specific)?

 

-phil

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[Stefan Sauer]

hi,

Quoting Phil Pellouchoud <[hidden email]>:
> I want to write a source plugin that takes a file of some proprietary
> format and spews out PCM data that a speaker sink destination could
> accept.>
> 1.       What's the best starting point for that?  Is there some code I
> can just pilfer from somewhere?
>
You woundn't do a source. Let filesrc and the like do the reading.  
What you want to write is a parser/demuxer. If its really simple you  
can look at mulawdec/alawdec, maybe wavparse.

>
> 2.       Is there a generic cross-platform "speaker" sink (I don't want
> to use DirectSound since that's really MS specific)?
>
You can use autoaudiosink. It will pick an available audiosink at runtime.

> -phil
>

Stefan

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[Phil Pellouchoud]

I am trying to write a source plugin and I want to base it on
GstAudioSrc (after reading the documentation), and I downloaded the
latest "good" plugins and found that
"...\gstreamer\gst-plugins-good\sys\sunaudio" uses this.  However, this
is not included in the
"...\gst-plugins-good-0.10.7\win32\vs8\gst-plugins-good.sln" and I was
just curious why.

Also, is this the best source plugin based on GstAudioSrc to copy (i.e.
use as a starting point) ?

Thanks.

-phil

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