Changeset 65013 in vbox

Timestamp:

Dec 27, 2016 11:04:57 AM (8 years ago)

Author:

vboxsync

Message:

Audio/DevHDA.cpp: Moved hdaStreamAsyncIOCreate() from hdaRegWriteSDCTL() to hdaRegWriteSDFMT() to save a few cycles which might be needed in order to create the async I/O thread.

The DMA transfers start pretty soon as hdaRegWriteSDCTL() (with RUN bit set) is called, so do the thread creation beforehand.

File:

• trunk/src/VBox/Devices/Audio/DevHDA.cpp (modified) (2 diffs)

trunk/src/VBox/Devices/Audio/DevHDA.cpp

@@ -1870 +1870 @@
 
 #ifdef VBOX_WITH_AUDIO_HDA_ASYNC_IO
-    if (fEnable)
-        rc = hdaStreamAsyncIOCreate(pThis, pStream);
-    if (RT_SUCCESS(rc))
-        hdaStreamAsyncIOLock(pStream);
+    hdaStreamAsyncIOLock(pStream);
 #endif
 
@@ -2901 +2898 @@
             break;
     }
+
+#ifdef VBOX_WITH_AUDIO_HDA_ASYNC_IO
+    if (RT_SUCCESS(rc))
+    {
+        rc = hdaStreamAsyncIOCreate(pThis, pStream);
+        AssertRC(rc);
+    }
+#endif
 
     /*