Changeset 76697 in vbox

Timestamp:

Jan 8, 2019 9:51:38 AM (6 years ago)

Author:

vboxsync

Message:

Audio/DrvAudio: Added a buffer underrun detection (also with optional release logging) for output streams.

File:

• trunk/src/VBox/Devices/Audio/DrvAudio.cpp (modified) (1 diff)

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

@@ -1442 +1442 @@
                   pStream->szName, tsDeltaPlayedCapturedNs, tsDeltaPlayedCapturedNs / RT_NS_1MS_64,
                   DrvAudioHlpFramesToMilli(cfLive, &pStream->Host.Cfg.Props), uLivePercent, pStream->fThresholdReached));
+
+        /* Has the treshold been reached (e.g. are we in playing stage) and we now have less live samples
+         * then time which has been passed? Then enter the buffering stage again. */
+        if (   pStream->fThresholdReached
+            && cfLive < cfPassedReal)
+        {
+            LogRel2(("Audio: Buffer underrun for stream '%s' occurred (%RU64ms passed but only %RU64ms in buffer)\n",
+                     pStream->szName,
+                     DrvAudioHlpFramesToMilli(cfPassedReal, &pStream->Host.Cfg.Props),
+                     DrvAudioHlpFramesToMilli(cfLive, &pStream->Host.Cfg.Props)));
+
+            /* Enter buffering stage again. */
+            pStream->fThresholdReached = false;
+        }
 
         bool fDoPlay      = pStream->fThresholdReached;