Improve HRTF panner initialization time by caching the HRIR sphere

[orottier]

relates to #371

[orottier]

/bench

[github-actions]

Benchmark result:


bench_ctor
  Instructions:             4570535 (+0.244331%)
  L1 Accesses:              6840454 (+0.327392%)
  L2 Accesses:                54322 (-0.007363%)
  RAM Accesses:               61605 (-0.014607%)
  Estimated Cycles:         9268239 (+0.237794%)

bench_sine
  Instructions:            71128271 (+0.079041%)
  L1 Accesses:            103831299 (+0.093548%)
  L2 Accesses:               263756 (+0.131354%)
  RAM Accesses:               62491 (+0.003201%)
  Estimated Cycles:       107337264 (+0.092169%)

bench_sine_gain
  Instructions:            76259990 (+0.098274%)
  L1 Accesses:            111589580 (+0.111790%)
  L2 Accesses:               273312 (+2.411607%)
  RAM Accesses:               62586 (+0.003196%)
  Estimated Cycles:       115146650 (+0.136409%)

bench_sine_gain_delay
  Instructions:           150553109 (+0.064756%)
  L1 Accesses:            211680708 (+0.069852%)
  L2 Accesses:               517839 (+3.403595%)
  RAM Accesses:               64182 (-0.006232%)
  Estimated Cycles:       216516273 (+0.107657%)

bench_buffer_src
  Instructions:            17682514 (+0.306641%)
  L1 Accesses:             25736842 (+0.343850%)
  L2 Accesses:                87474 (+0.448997%)
  RAM Accesses:              100638 (No change)
  Estimated Cycles:        29696542 (+0.304488%)

bench_buffer_src_delay
  Instructions:            90642606 (+0.087668%)
  L1 Accesses:            123974597 (+0.096016%)
  L2 Accesses:               167422 (+3.844985%)
  RAM Accesses:              100774 (-0.002977%)
  Estimated Cycles:       128338797 (+0.116867%)

bench_buffer_src_iir
  Instructions:            41870685 (+0.147133%)
  L1 Accesses:             60984482 (+0.171348%)
  L2 Accesses:                87254 (-0.911909%)
  RAM Accesses:              100844 (-0.005949%)
  Estimated Cycles:        64950292 (+0.154343%)

bench_buffer_src_biquad
  Instructions:            37946268 (+0.268307%)
  L1 Accesses:             53418158 (+0.328475%)
  L2 Accesses:               130076 (-0.033047%)
  RAM Accesses:              100849 (-0.119838%)
  Estimated Cycles:        57598253 (+0.296792%)

bench_stereo_positional
  Instructions:            45808005 (+0.483641%)
  L1 Accesses:             68571171 (+0.428380%)
  L2 Accesses:               349805 (+25.89843%)
  RAM Accesses:              100924 (-0.128644%)
  Estimated Cycles:        73852536 (+0.884822%)

bench_stereo_panning_automation
  Instructions:            32344211 (+0.232715%)
  L1 Accesses:             48391662 (+0.262715%)
  L2 Accesses:               137080 (-0.288050%)
  RAM Accesses:              100746 (-0.121940%)
  Estimated Cycles:        52603172 (+0.229626%)

bench_analyser_node
  Instructions:            39849552 (+0.159224%)
  L1 Accesses:             55841694 (+0.188637%)
  L2 Accesses:               179104 (-0.511043%)
  RAM Accesses:              101402 (+0.012822%)
  Estimated Cycles:        60286284 (+0.167807%)

bench_hrtf_panners
  Instructions:          1782302026 (-8.632491%)
  L1 Accesses:           2557558270 (-12.32053%)
  L2 Accesses:             26885318 (-24.70701%)
  RAM Accesses:              175473 (+20.53124%)
  Estimated Cycles:      2698126415 (-12.97978%)

[b-ma]

Cool thanks, as far as I can tell looks good to me!