* sfu: filter VP9 and AV1 simulcast temporal layers with the dependency descriptor
Every simulcast codec gets an explicit temporal layer selector. With the
dependency descriptor, VP8, VP9 and AV1 filter temporal layers by frame and
forward the descriptor. Without it, a pass-through selector forwards every
temporal layer and reports the target as reached, so a pending target cannot
block allocation. VP8DD becomes the codec-neutral DDTemporal.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
* sfu: VP8-only padding header in DDTemporal, structure gate on presence
DDTemporal returns the one byte VP8 payload descriptor for padding only for
VP8. The descriptor forwarder takes a structure from any packet that carries
one, as the parser accepts it only on the first packet of a frame.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
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Co-authored-by: Claude Opus 5.5 <noreply@anthropic.com>
CodecMunger.UpdateAndGet returned a freshly allocated slice for every
forwarded packet on every down track. Return the header in a fixed array
with a length instead and marshal into it with MarshalTo. TranslationParams
carries the array; WriteRTP slices it locally.
UpdateAndGet now allocates zero times per call (was one). Escape analysis
confirms TranslationParams stays on the stack.
Co-authored-by: Claude Fable 5.1 <noreply@anthropic.com>
* Do codec munging when munging RTP header.
It was possible for probe packets to get in between RTP munging and
codec munging and throw off sequence number while dropping packets.
Affected only VP8 as it does codec munging.
* do not pass in buffer as it is created anyway
* flip fields
* flip order
* fix test
* call translate for all tracks
* simplify
