Allows to change the ALSA buffer size

In what is likely an ALSA bug, sometimes requiring 500ms buffer fails. Add a ALSABufferOverride parameter that allows to override the value. Value is in milliseconds.
MythTV · Nov 16, 2011 · 07b1cc1 · 07b1cc1
1 parent 088335b
commit 07b1cc1
Showing 1 changed file with 3 additions and 1 deletion.
diff --git a/mythtv/libs/libmyth/audiooutputalsa.cpp b/mythtv/libs/libmyth/audiooutputalsa.cpp
@@ -427,7 +427,9 @@ bool AudioOutputALSA::OpenDevice()
             return false;
     }
 
-    buffer_time = 500000; // buffer 0.5s worth of samples
+    // buffer 0.5s worth of samples
+    buffer_time = gCoreContext->GetNumSetting("ALSABufferOverride", 500) * 1000;
+
     period_time = 4;      // aim for an interrupt every (1/4th of buffer_time)
 
     err = SetParameters(pcm_handle, format, channels, samplerate,