[mythtv-commits] Ticket #11288: Cleanup of DVD startup to improve playback reliability

[MythTV]

#11288: Cleanup of DVD startup to improve playback reliability
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 Reporter:  peper03@…    |           Type:  Patch - Bug Fix
   Status:  new          |       Priority:  minor
Milestone:  unknown      |      Component:  MythTV - DVD Playback
  Version:  Unspecified  |       Severity:  medium
 Keywords:               |  Ticket locked:  0
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 The startup code for DVD playback jumps around somewhat trying to find a
 playable title, which is then used to create audio/video decoders before
 playback is restarted at firstplay.

 This doesn't always work as it can leave the DVDs VM in an inconsistent
 state and, depending on the DVD, looks ugly as playback starts and then
 restarts or appears to jump somewhere else after a couple of seconds.
 Because the VM can be left in an inconsistent state, menu
 navigation/selection issues can arise, which can make it difficult to
 start playback.

 The attached patch attempts to clean up the startup code.  The
 DVDRingBuffer no longer tries to find a playable title in OpenFile, but
 rather just lets the VM get on with playback.  AVFormatDecoder no longer
 processes the initial frames more than is required to create decoders.
 Once this has been achieved, any cached data is flushed before jumping
 back to 'firstplay' (and cleanly resetting the VM).  By not displaying the
 initial frames used to determine the decoders and flushing the cached
 data, the ugly jump at the start of some DVDs is no longer visible.

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Ticket URL: <http://code.mythtv.org/trac/ticket/11288>
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