Changeset 34350 in vbox for trunk

Timestamp:

Nov 25, 2010 7:03:07 AM (14 years ago)

Author:

vboxsync

Message:

Audio/HDA: initiate transfer next iteration if rest of current backend buffer is less SDnFIFOS.

File:

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

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

@@ -1345 +1345 @@
 {
     uint32_t cb2Copy;
+    if (u32SoundBackendBufferBytesAvail <= u32Fifos + 1)
+    {
+        /* Some platform offers buffer not multiplied on SDnFIFOS+1 value
+         * so to avoid situation when the rest of the backend buffer is less
+         * of SDnFIFOW value, we'll wait for next iteration with fresh buffer.
+         */
+        return 0;
+    }
     /*
      * Amounts of bytes depends on current position in buffer (u32BdleCviLen-u32BdleCviPos)
@@ -1575 +1583 @@
         Assert((avail >= 0 && (u32Cbl >= (*pu32Lpib)))); /* sanity */
         uint32_t u32CblLimit = u32Cbl - (*pu32Lpib);
+        Assert((u32CblLimit > hdaFifoWToSz(pState, u8Strm)));
         Log(("hda: CBL=%d, LPIB=%d\n", u32Cbl, *pu32Lpib));
         switch (src)