Changeset 88259 in vbox for trunk/include/VBox/vmm

Timestamp:

Mar 23, 2021 12:10:36 PM (4 years ago)

Author:

vboxsync

Message:

DrvAudio: Hacked the underruns detection so it won't falsely trigger when there is still enough bytes buffered in the host driver. bugref:9890

File:

• trunk/include/VBox/vmm/pdmaudioifs.h (modified) (2 diffs)

trunk/include/VBox/vmm/pdmaudioifs.h

@@ -1228 +1228 @@
         STAMCOUNTER     TotalTimesWritten;
     } Stats;
+    /** Hack alert: Max writable amount reported by the backend.
+     * This is used to aid buffer underrun detection in DrvAudio while playing.
+     * Ideally, the backend should have a method for querying number of buffered
+     * bytes instead.  However this will do for now. */
+    uint32_t            cbBackendMaxWritable;
 } PDMAUDIOSTREAMOUT;
 /** Pointer to the specifics for an audio output stream. */
@@ -1319 +1324 @@
 
 /** Magic value for PDMAUDIOSTREAM. */
-#define PDMAUDIOSTREAM_MAGIC    PDM_VERSION_MAKE(0xa0d3, 1, 0)
+#define PDMAUDIOSTREAM_MAGIC    PDM_VERSION_MAKE(0xa0d3, 1, 1)