#4954: Proliferation of BBuffer instances when playing sound
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Reporter: Adek336 | Owner: leavengood
Type: bug | Status: assigned
Priority: normal | Milestone: R1
Component: Kits/Media Kit | Version: R1/alpha1
Resolution: | Keywords:
Blocked By: 14755 | Blocking:
Has a Patch: 0 | Platform: All
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Changes (by leavengood):
* owner: nobody => leavengood
Comment:
I have finally begun investigating this. I am slowly getting a handle on
it but obviously it is tricky. We still get 3 new buffers in the
media_addon_server every time MediaPlayer is opened, and I assume the same
would happen for the sample program (I will try that too.)
I also see an "orphaned" buffer in the media_server each time MediaPlayer
starts. I wrote a small script which calls listarea for media_server and
media_addon_server and greps for the cloned buffers they each hold and the
1 and 3 get added every time.
I believe a BBufferProducer subclass within the media_addon_server team is
creating these buffers whenever a program needs to play sound. The buffers
are all part of the same area, which indicates they are probably part of
the same buffer group. SoundPlayNode::AllocateBuffers actually creates a
BBufferGroup of this size, so it may be the culprit, but I need to do more
debugging.
I am not yet sure about the extra buffers in media_server.
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Ticket URL: <https://dev.haiku-os.org/ticket/4954#comment:28>
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