Fix #3384 Multiple Seek Backwards (e.g. Drag)#3479
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joeyparrish merged 1 commit intoshaka-project:masterfrom Jun 21, 2021
Merged
Fix #3384 Multiple Seek Backwards (e.g. Drag)#3479joeyparrish merged 1 commit intoshaka-project:masterfrom
joeyparrish merged 1 commit intoshaka-project:masterfrom
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streaming_engine maintains a reference to ongoing fetch operations for video, audio and text segments. Using these references, the fetch operations may be cancelled (e.g. due to a seek). Immediately following a seek, fetch operations were started for init segments and media segments. Upon completion of the init segment operation the reference to the media segment operation was overwritten with null, so could not be cancelled. This was particularly evident on platforms where the seek bar is dragged, as this produces multiple seeks. When dragging backwards it was possible for the buffer to contain segments beyond the play head. The solution is to await completion of the init segment fetch before starting the media segment fetch.
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joeyparrish
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Jul 13, 2021
streaming_engine maintains a reference to ongoing fetch operations for video, audio and text segments. Using these references, the fetch operations may be cancelled (e.g. due to a seek). Immediately following a seek, fetch operations were started for init segments and media segments. Upon completion of the init segment operation the reference to the media segment operation was overwritten with null, so could not be cancelled. This was particularly evident on platforms where the seek bar is dragged, as this produces multiple seeks. When dragging backwards it was possible for the buffer to contain segments beyond the play head. The solution is to await completion of the init segment fetch before starting the media segment fetch. Fixed #3384
joeyparrish
pushed a commit
that referenced
this pull request
Jul 13, 2021
streaming_engine maintains a reference to ongoing fetch operations for video, audio and text segments. Using these references, the fetch operations may be cancelled (e.g. due to a seek). Immediately following a seek, fetch operations were started for init segments and media segments. Upon completion of the init segment operation the reference to the media segment operation was overwritten with null, so could not be cancelled. This was particularly evident on platforms where the seek bar is dragged, as this produces multiple seeks. When dragging backwards it was possible for the buffer to contain segments beyond the play head. The solution is to await completion of the init segment fetch before starting the media segment fetch. Fixed #3384 Backported to v3.0.x Change-Id: I2bd23ad1abc430e3f0cc413fb1aca863cb967356
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Description
Fixes #3384
streaming_engine maintains a reference to ongoing fetch operations for
video, audio and text segments. Using these references, the fetch
operations may be cancelled (e.g. due to a seek).
Immediately following a seek, fetch operations were started for init
segments and media segments. Upon completion of the init segment
operation the reference to the media segment operation was overwritten
with null, so could not be cancelled.
This was particularly evident on platforms where the seek bar is
dragged, as this produces multiple seeks. When dragging backwards it
was possible for the buffer to contain segments beyond the play head.
The solution is to await completion of the init segment fetch before
starting the media segment fetch.
Type of change
not work as expected)
Checklist:
./build/all.pyand the build passes./build/test.pyand all tests pass