Add a config to output first-, second-, or third-order ambisonics

Currently incomplete, as second- and third-order output will not correctly
handle B-Format input buffers. A standalone up-sampler will be needed, similar
to the high-quality decoder.

Also, output is ACN ordering with SN3D normalization. A config option will
eventually be provided to change this if desired.

1 files changed, 6 insertions, 0 deletions

diff --git a/Alc/backends/mmdevapi.c b/Alc/backends/mmdevapi.c
index 60d3be00..03f2f56b 100644
--- a/Alc/backends/mmdevapi.c
+++ b/Alc/backends/mmdevapi.c
@@ -882,6 +882,9 @@ static HRESULT ALCmmdevPlayback_resetProxy(ALCmmdevPlayback *self)
             OutputType.dwChannelMask = MONO;
             break;
         case DevFmtBFormat3D:
+        case DevFmtAmbi1:
+        case DevFmtAmbi2:
+        case DevFmtAmbi3:
             device->FmtChans = DevFmtStereo;
             /*fall-through*/
         case DevFmtStereo:
@@ -1523,6 +1526,9 @@ static HRESULT ALCmmdevCapture_resetProxy(ALCmmdevCapture *self)
             break;
 
         case DevFmtBFormat3D:
+        case DevFmtAmbi1:
+        case DevFmtAmbi2:
+        case DevFmtAmbi3:
             return E_FAIL;
     }
     switch(device->FmtType)