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Ticket #10984 (new Developer Task)

Opened 10 months ago

Last modified 8 months ago

Improve closed caption performance

Reported by: stichnot Owned by: stichnot
Priority: minor Milestone: 0.27
Component: MythTV - Captions Version: Master Head
Severity: medium Keywords:
Cc: Ticket locked: no

Description

High CPU usage when displaying "real-time" character-by-character CEA-708 captions, with "-v vbi", on an Atom frontend, resulting in stuttering. May also be true for CEA-608 captions. Unacceptable.

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Change History

comment:1 Changed 8 months ago by Jack Thomasson <jkt@…>

In 30f6e33cc25191a8b57492cdc1868845eaa713d8/mythtv:

Fixes #11072. Improve cc708 thread safety.

There still appear to be potential race conditions, which can be fixed
by adding more locking. However, this will have an unknown
performance impact, so we'll address it after the release.
Refs #10984.

Signed-off-by: Jim Stichnoth <jstichnoth@…>

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