Decode ogg file while downloading: what are the good practices?

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Hello,

In my Android app, I implemented the libogg and libvorbis libraries, so I
can extract audio samples from an ogg file on the fly.

It works well when I extract samples from a local file, but my goal is to
be able to extract audio samples and seek in a file that is downloading (so
I can stream an audio file and process audio samples on the fly, from
anywhere in the file).

So here is the code I use, to extract audio samples from a downloading ogg
file (I keep it simple so it's easy to read):
https://gist.github.com/mregnauld/3f7cdc43b02ec3bbd91641b9333ba072
In that code, the oggFile  is the file that I download (using Java code).
So I start the download, and when there is some data available, I open the
file, seek in the file, and extract audio samples from the desired position.

And here is the problem: the ov_pcm_seek() function doesn't work properly
most of the time, when I seek in a file that is currently downloading, even
if I want to seek to a position that is already available (there is already
data in that position).

So, my question is: is it good practice or not? If not, how can I properly
manage samples extraction and seeking in a downloading file?

Thanks you very much for your help.

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<div dir=3D"ltr"><div dir=3D"ltr"><div dir=3D"ltr"><div dir=3D"ltr">Hello,<=
div><br></div><div>In my Android app, I implemented the libogg and libvorbi=
s libraries, so I can extract audio samples from an ogg file on the fly.</d=
iv><div><br></div><div>It works well when I extract samples from a local fi=
le, but my goal is to be able to extract audio samples and seek in a file t=
hat is downloading (so I can stream an audio file and process audio samples=
 on the fly, from anywhere in the file).</div><div><br></div><div>So here i=
s the code I use, to extract audio samples from a downloading ogg file (I k=
eep it simple so it&#39;s easy to read):=C2=A0<a href=3D"https://gist.githu=
b.com/mregnauld/3f7cdc43b02ec3bbd91641b9333ba072">https://gist.github.com/m=
regnauld/3f7cdc43b02ec3bbd91641b9333ba072</a></div><div>In that code, the=
=C2=A0<font face=3D"monospace, monospace">oggFile</font>=C2=A0 is the file =
that I download (using Java code). So I start the download, and when there =
is some data available, I open the file, seek in the file, and extract audi=
o samples from the desired position.</div><div><br></div><div><div>And here=
 is the problem: the=C2=A0<font face=3D"monospace, monospace">ov_pcm_seek()=
</font>=C2=A0function doesn&#39;t work properly most of the time, when I se=
ek in a file that is currently downloading, even if I want to seek to a pos=
ition that is already available (there is already data in that position).<b=
r></div><br class=3D"gmail-Apple-interchange-newline"></div><div>So, my que=
stion is: is it good practice or not? If not, how can I properly manage sam=
ples extraction and seeking in a downloading file?</div><div><br></div><div=
>Thanks you very much for your help.</div><div><br></div></div></div></div>=
</div>

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