Though it didn't strictly clash since it was for a different component (global
state vs source property), 0x1213 was used by AL_RESAMPLER_NAME_SOFT. Probably
best to avoid duplicate property values regardless.
A bit of a misnomer now since "Nearest" implies rounding (i.e. when the sample
offset is >= .5, it should pick the next sample being closer in time), but that
adds unnecessary complications.
This is a bit more efficient than calling the normal HRTF mixing function
twice, and helps solve the problem of the values generated from convolution not
being consistent with the new HRIR.
This reduces the output volume when the mixed samples extend outside of -1,+1,
to prevent excessive clipping. It can reduce the volume by -80dB in 50ms, and
increase it by +80dB in 1s (it will not go below -80dB or above 0dB).
Clang does not allow using C11's atomic_load on const _Atomic variables.
Previously it just disabled use of C11 atomics if atomic_load didn't work on a
const _Atomic variable, but I think I'd prefer to have Clang use C11 atomics
for the added features (more explicit memory ordering) even if it means a few
instances of breaking const.
If the requested number of mono and stereo sources exceeds 256, the source
limit will be expanded. Any config file setting overrides this. If the device
is reset to have fewer sources than are currently allocated, excess sources
will remain and be usable as normal, but no more can be generated until enough
are delated to go back below the limit.
This is intended to do conversions for interleaved samples, and supports
changing from one DevFmtType to another as well as resampling. It does not
handle remixing channels.
The mixer is more optimized to use the resampling functions directly. However,
this should prove useful for recording with certain backends that won't do the
conversion themselves.
This should cut down on unnecessary quantization noise (however minor) for 8-
and 16-bit samples. Unfortunately a power-of-2 multiple can't be used as easily
for converting float samples to integer, due to integer types having a non-
power-of-2 maximum amplitude (it'd require more per-sample clamping).
Chris Robinson