Add a crossover frequency field for the device

Used when upsampling low-order ambisonic signals to higher order. Rather than a
hardcoded 400hz, it ensures a consistent crossover point when an ambdec
configuration is used. It can also allow for an alsoft config option.

1 files changed, 2 insertions, 1 deletions

diff --git a/alc/alc.cpp b/alc/alc.cpp
index d42d055b..b833cb80 100644
--- a/alc/alc.cpp
+++ b/alc/alc.cpp
@@ -2219,7 +2219,8 @@ static ALCenum UpdateDeviceParams(ALCdevice *device, const int *attrList)
                     AmbiIndex::OrderFrom2DChannel.data() :
                     AmbiIndex::OrderFromChannel.data()};
 
-                const BandSplitter splitter{400.0f / static_cast<float>(device->Frequency)};
+                const BandSplitter splitter{device->mXOverFreq /
+                    static_cast<float>(device->Frequency)};
 
                 const auto scales = BFormatDec::GetHFOrderScales(voice->mAmbiOrder,
                     device->mAmbiOrder);