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Just clarify some verbiage, and actually assert type+n_elems
match. Note mismatch also fallsthrough to an -EINVAL just in
case asserts() have been compiled out (-DNDEBUG).
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It seems likely that pipe owners will need not only a way to
differentiate themselves via the owner pointer, but also
somewhere to register a pipe-specific reference.
There probably needs to be a result pointer added for storing the
owner_foo when the owner taps, so the owner can make use of it.
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Just some banal paperwork...
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Until now there's just been a forward declared type for
til_fb_fragment_t.stream's type, and it's been completely unused.
The purpose of the stream is to provide a continous inter-frame
object where information can be stored pertaining to the stream
of frames.
Right now, that information is limited to emergent "pipes" formed
by using taps against a given stream. Taps at new paths in the
stream become added as pipes for those paths, with the
responsible tap hooked in as the driving tap. Taps at existing
paths become diverted to the driving taps, enabling potential for
external drivers for tapped variables.
This commit only adds the implementation, nothing is actually
using it yet.
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