kleines Filmröllchen b48badc3b6 LibAudio: Remove frame-wise copys from FlacLoader ...

Previously, FlacLoader would read the data for each frame into a
separate vector, which are then combined via extend() in the end. This
incurs an avoidable copy per frame. By having the next_frame() function
write into a given Span, there's only one vector allocated per call to
get_more_samples().

This increases performance by at least 100% realtime, as measured by
abench, from about 1200%-1300% to (usually) 1400% on complex test files.

2022-01-02 22:18:37 +01:00

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