Changeset 57451 in vbox for trunk/src/VBox/Devices/Audio/AudioMixBuffer.cpp

Timestamp:

Aug 19, 2015 9:39:17 AM (9 years ago)

Author:

vboxsync

Message:

Audio: Try to fix chopped off samples when playing short sound files.

File:

• trunk/src/VBox/Devices/Audio/AudioMixBuffer.cpp (modified) (4 diffs)

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

@@ -214 +214 @@
 
     return rc;
+}
+
+/**
+ * Returns available number of samples for reading.
+ *
+ * @return  uint32_t                Number of samples available for reading.
+ * @param   pMixBuf                 Mixing buffer to return value for.
+ */
+uint32_t AudioMixBufAvail(PPDMAUDIOMIXBUF pMixBuf)
+{
+    AssertPtrReturn(pMixBuf, true);
+
+    uint32_t cAvail;
+    if (pMixBuf->pParent) /* Child */
+        cAvail = pMixBuf->cMixed;
+    else
+        cAvail = pMixBuf->cProcessed;
+
+    Assert(cAvail <= pMixBuf->cSamples);
+    return cAvail;
 }
 
@@ -932 +952 @@
 
 /**
- * Returns the number of audio samples mixed (processed) from
+ * Returns the number of audio samples mixed (processed) by
  * the parent mixing buffer.
  *
@@ -963 +983 @@
     AssertPtrReturn(pDst, VERR_INVALID_POINTER);
     AssertPtrReturn(pSrc, VERR_INVALID_POINTER);
+    AssertReturn(cSamples, VERR_INVALID_PARAMETER);
     /* pcProcessed is optional. */
 
@@ -1264 +1285 @@
     AssertPtrReturn(pMixBuf, VERR_INVALID_POINTER);
     AssertPtrReturn(pvBuf, VERR_INVALID_POINTER);
-    AssertReturn(cbBuf, VERR_INVALID_PARAMETER);
     /* pcbRead is optional. */