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.

2 files changed, 2 insertions, 2 deletions

diff --git a/alc/effects/convolution.cpp b/alc/effects/convolution.cpp
index bf439721..c072653d 100644
--- a/alc/effects/convolution.cpp
+++ b/alc/effects/convolution.cpp
@@ -247,7 +247,7 @@ void ConvolutionState::setBuffer(const ALCdevice *device, const BufferStorage *b
         (uint64_t{buffer->mSampleLen}*device->Frequency + (buffer->mSampleRate-1)) /
         buffer->mSampleRate);
 
-    const BandSplitter splitter{400.0f / static_cast<float>(device->Frequency)};
+    const BandSplitter splitter{device->mXOverFreq / static_cast<float>(device->Frequency)};
     for(auto &e : *mChans)
         e.mFilter = splitter;
 
diff --git a/alc/effects/reverb.cpp b/alc/effects/reverb.cpp
index 646ac624..2bf09bef 100644
--- a/alc/effects/reverb.cpp
+++ b/alc/effects/reverb.cpp
@@ -672,7 +672,7 @@ void ReverbState::deviceUpdate(const ALCdevice *device)
         mMixOut = &ReverbState::MixOutPlain;
         mOrderScales.fill(1.0f);
     }
-    mAmbiSplitter[0][0].init(400.0f / frequency);
+    mAmbiSplitter[0][0].init(device->mXOverFreq / frequency);
     std::fill(mAmbiSplitter[0].begin()+1, mAmbiSplitter[0].end(), mAmbiSplitter[0][0]);
     std::fill(mAmbiSplitter[1].begin(), mAmbiSplitter[1].end(), mAmbiSplitter[0][0]);
 }