[Bug 732908] audioresample: skips samples unless input buffers have correct size

[GStreamer (bugzilla.gnome.org)]

https://bugzilla.gnome.org/show_bug.cgi?id=732908
  GStreamer | gst-plugins-base | unspecified

--- Comment #14 from Jan Alexander Steffens (heftig) <jan.steffens at gmail.com> 2015-01-14 08:47:25 UTC ---
Created an attachment (id=294495)
 View: https://bugzilla.gnome.org/attachment.cgi?id=294495
 Review: https://bugzilla.gnome.org/review?bug=732908&attachment=294495

proposed patch

How about this?

audioresample: Try to prevent endless looping

Speex may decide not to consume any samples because it can't write any. I've
seen a hang during draining caused by the resample loop never terminating. In
that case, resampling happened as normal until olen was 0 but ilen was still 1.
_process_native then reduced ichunk to 0, so ilen never decreased below 1 and
the loop never terminated.

Instead of reverting 684cf44 ({audioresample: don't skip input samples), break
only if all output samples have been produced and speex refuses to consume any
more input samples.

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