Handle 3D7.1 as a separate channel configuration

It's treated as 5.1 + 2 aux channels. This allows AL_DIRECT_CHANNELS_SOFT to
behave better, not forwarding rear left/right channel inputs to lower front and
upper rear, and allows reporting a more appropriate output mode to the app
instead of 7.1.

1 files changed, 2 insertions, 0 deletions

diff --git a/alc/backends/pulseaudio.cpp b/alc/backends/pulseaudio.cpp
index 67e00234..30f486c7 100644
--- a/alc/backends/pulseaudio.cpp
+++ b/alc/backends/pulseaudio.cpp
@@ -893,6 +893,7 @@ bool PulsePlayback::reset()
         chanmap = X61ChanMap;
         break;
     case DevFmtX71:
+    case DevFmtX3D71:
         chanmap = X71ChanMap;
         break;
     }
@@ -1173,6 +1174,7 @@ void PulseCapture::open(const char *name)
     case DevFmtX71:
         chanmap = X71ChanMap;
         break;
+    case DevFmtX3D71:
     case DevFmtAmbi3D:
         throw al::backend_exception{al::backend_error::DeviceError, "%s capture not supported",
             DevFmtChannelsString(mDevice->FmtChans)};