Support B-Format sounds in the examples

1 files changed, 13 insertions, 1 deletions

diff --git a/examples/alreverb.c b/examples/alreverb.c
index 1f30a450..56acdd82 100644
--- a/examples/alreverb.c
+++ b/examples/alreverb.c
@@ -34,6 +34,7 @@
 
 #include "AL/al.h"
 #include "AL/alc.h"
+#include "AL/alext.h"
 #include "AL/efx.h"
 #include "AL/efx-presets.h"
 
@@ -173,11 +174,22 @@ static ALuint LoadSound(const char *filename)
     }
 
     /* Get the sound format, and figure out the OpenAL format */
+    format = AL_NONE;
     if(sfinfo.channels == 1)
         format = AL_FORMAT_MONO16;
     else if(sfinfo.channels == 2)
         format = AL_FORMAT_STEREO16;
-    else
+    else if(sfinfo.channels == 3)
+    {
+        if(sf_command(sndfile, SFC_WAVEX_GET_AMBISONIC, NULL, 0) == SF_AMBISONIC_B_FORMAT)
+            format = AL_FORMAT_BFORMAT2D_16;
+    }
+    else if(sfinfo.channels == 4)
+    {
+        if(sf_command(sndfile, SFC_WAVEX_GET_AMBISONIC, NULL, 0) == SF_AMBISONIC_B_FORMAT)
+            format = AL_FORMAT_BFORMAT3D_16;
+    }
+    if(!format)
     {
         fprintf(stderr, "Unsupported channel count: %d\n", sfinfo.channels);
         sf_close(sndfile);