Niklas Haas 5e56937b74 avcodec: allow bypassing frame threading with an optional flag ...

Normally, this function tries to make sure all threads are saturated with
work to do before returning any frames; and will continue requesting packets
until that is the case.

However, this significantly slows down initial decoding latency when only
requesting a single frame (to e.g. configure the filter graph), and also
wastes a lot of unnecessary memory in the event that the user does not intend
to decode more frames until later.

By introducing a new `flags` paramater and a new flag
`AV_CODEC_RECEIVE_FRAME_FLAG_SYNCHRONOUS` to go along with it, we can allow
users to temporarily bypass this logic.

2025-12-05 19:42:41 +01:00

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