setPlaybackParameters() not overwriten by live adjusment #10883
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There are multiple sequences of handler messages which can cause a user request to update playback speed to be overwritten by the `LivePlaybackSpeedControl` value. All the sequeunces share a common feature that: 1. a queued `MSG_PLAYBACK_PARAMETERS_CHANGED_INTERNAL` executes after the `MSG_SET_PLAYBACK_PARAMETERS` 2. The `PlaybackParameters` in this internal change are not the intended speed. The easiest way to reproduce this is with AC-3 pass-thru audio, in this case the audio renderer does not properly support speed change, see bug: google#10865 According to this commit, [Add back support for setting audio pitch](google@74c493f51e) [andrewlewis] This callback to report the internal speed change is needed for the renderers to run slow motion properly. In any event, there is no reason to propegate this internal speed change to the user speed setting (`ExoPlayerImplInternal.playbackParameters`). The change simply fixes `MSG_PLAYBACK_PARAMETERS_CHANGED_INTERNAL` not to update the user setting.
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This is the fix for #10882 |
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I'll open the same pull request on AndroidX.media if this one is acceptable. |
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I'd suggest we continue the discussion on #10882. This PR doesn't fully work anyway I believe because it cuts out all potential updates to |
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There are multiple sequences of handler messages which can cause a user request to update playback speed to be overwritten by the
LivePlaybackSpeedControlvalue.All the sequeunces share a common feature that:
MSG_PLAYBACK_PARAMETERS_CHANGED_INTERNALexecutes after theMSG_SET_PLAYBACK_PARAMETERSPlaybackParametersin this internal change are not the intended speed.The easiest way to reproduce this is with AC-3 pass-thru audio, in this case the audio renderer does not properly support speed change, see bug:
#10865
According to this commit,
Add back support for setting audio pitch [andrewlewis]
This callback to report the internal speed change is needed for the renderers to run slow motion properly.
In any event, there is no reason to propegate this internal speed change to the user speed setting (
ExoPlayerImplInternal.playbackParameters). The change simply fixesMSG_PLAYBACK_PARAMETERS_CHANGED_INTERNALnot to update the user setting.