[asterisk-dev] [Code Review] 3379: ARI: Make bridges/{bridgeId}/play queue sound files if sounds are already playing on the bridge instead of playing them simultaneously as they are called

[Jonathan Rose]

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https://reviewboard.asterisk.org/r/3379/
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(Updated March 20, 2014, 5:41 p.m.)


Review request for Asterisk Developers.


Changes
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I'm not 100% certain if this is the most elegant solution for the problem I highlighted before, but it dealt with the race condition that could lead to queueing a playback right before the channel hangs up effectively.


Bugs: ASTERISK-22677
    https://issues.asterisk.org/jira/browse/ASTERISK-22677


Repository: Asterisk


Description
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Previously, if you played an audio file and then played another before the first finished, the second audio file would start playing immediately as it was called overlapping the previous sound. Apparently people don't like that. This patch changes that behavior so that the sound will be queued at the end of any existing controls if they are running.


Diffs (updated)
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  /branches/12/res/stasis/control.c 410875 
  /branches/12/res/stasis/control.h 410875 
  /branches/12/res/res_stasis_playback.c 410875 
  /branches/12/res/res_stasis.c 410875 
  /branches/12/res/ari/resource_bridges.c 410875 
  /branches/12/include/asterisk/stasis_app.h 410875 

Diff: https://reviewboard.asterisk.org/r/3379/diff/


Testing
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Tested for playback channel wrapper leaks, tested to make sure control objects were being destroyed when they fell out of use.  Tested playing of a single file. Tested playing of multiple files in a row. Tested playing of multiple files in a row and then after a sequence finished, playing additional files so that new channels would have to be created. Tested playing sounds right as other sounds were concluding. I wasn't able to break it (although I wouldn't be surprised if there is a possible condition where you can grab a control as it is finishing up its queue and then attempting to add a sound to a finished queue causing the playback to fail. I don't think this would break things in a profound way, it just might possibly make one sound fail to queue under extremely unlikely conditions).


Thanks,

Jonathan Rose

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