decodebin3: New mechanism for handling collection and selections

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This commit separates collection and selections into a new separate structure:
DecodebinCollection.

This provides a much cleaner/saner way of dealing with collections being
updated, gapless playback, etc...

There is now a list of DecodebinCollection in flight, of which two are special:
* input_collection, the currently inputted/merged collection
* output_collection, the currently active collection on the output of multiqueue

Handling GST_EVENT_SELECT_STREAMS is split, by looking for the collection to
which it applies. And the requested streams are stored in it. IIF that
collection is output_collection we can do the switch, else it will be updated
when it becomes active.

Detecting which collection/selection is active is done by looking at the
GST_EVENT_STREAM_START on the output of the multiqueue.

...

This commit is contained in:

Edward Hervey 2024-04-08 09:56:21 +02:00

parent 0a10443432

commit d55f07167e

1 changed files with 430 additions and 269 deletions

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subprojects/gst-plugins-base/gst/playback/gstdecodebin3.c

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