Fix mono audio playback.

jyavenard · jyavenard · commit cd75e17bd55c · 2012-02-13T00:08:25.000+11:00
Follow-up 8adf652, which was incorrect [cherry-picked from ce8844a]
diff --git a/mythtv/libs/libmyth/audiooutputbase.cpp b/mythtv/libs/libmyth/audiooutputbase.cpp
@@ -990,7 +990,7 @@ int AudioOutputBase::CopyWithUpmix(char *buffer, int frames, uint &org_waud)
         {
             AudioOutputUtil::MonoToStereo(WPOS, buffer, bdFrames);
             frames -= bdFrames;
-            off = bdFrames * source_bytes_per_frame;
+            off = bdFrames * sizeof(float); // 1 channel of floats
             org_waud = 0;
         }
         if (frames > 0)

Original file line number	Diff line number	Diff line change
`@@ -990,7 +990,7 @@ int AudioOutputBase::CopyWithUpmix(char *buffer, int frames, uint &org_waud)`
`990`	`990`	`{`
`991`	`991`	`AudioOutputUtil::MonoToStereo(WPOS, buffer, bdFrames);`
`992`	`992`	`frames -= bdFrames;`
`993`		`- off = bdFrames * source_bytes_per_frame;`
	`993`	`+ off = bdFrames * sizeof(float); // 1 channel of floats`
`994`	`994`	`org_waud = 0;`
`995`	`995`	`}`
`996`	`996`	`if (frames > 0)`