From 3676fdc4db55e04e70851d2818f8ca5f5b44e761 Mon Sep 17 00:00:00 2001
From: Chris Robinson <chris.kcat@gmail.com>
Date: Fri, 21 May 2010 14:12:09 -0700
Subject: [PATCH] Add mono and stereo channel masks for DSound output

---
 Alc/dsound.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/Alc/dsound.c b/Alc/dsound.c
index 29e5b1cd..c6083d5b 100644
--- a/Alc/dsound.c
+++ b/Alc/dsound.c
@@ -346,6 +346,7 @@ static ALCboolean DSoundResetPlayback(ALCdevice *device)
                 format = AL_FORMAT_MONO16;
             else if(aluBytesFromFormat(device->Format) == 4)
                 format = AL_FORMAT_MONO_FLOAT32;
+            OutputType.dwChannelMask = SPEAKER_FRONT_CENTER;
         }
         else if(speakers == DSSPEAKER_STEREO)
         {
@@ -355,6 +356,8 @@ static ALCboolean DSoundResetPlayback(ALCdevice *device)
                 format = AL_FORMAT_STEREO16;
             else if(aluBytesFromFormat(device->Format) == 4)
                 format = AL_FORMAT_STEREO_FLOAT32;
+            OutputType.dwChannelMask = SPEAKER_FRONT_LEFT |
+                                       SPEAKER_FRONT_RIGHT;
         }
         else if(speakers == DSSPEAKER_QUAD)
         {