Changeset 144 for trunk/src/kernel/qsound_pm.cpp

Timestamp:

Oct 25, 2006, 11:44:19 PM (19 years ago)

Author:

dmik

Message:

Kernel: QSound: Due to problems with the most commonly used uniaud driver when it comes to play too many (>10) sound files simultaneously in shareable mode sound files are now opened in exclusive mode by default. It is necessary to set the QT_PM_SOUND_SHARE environment variable in order to switch back to shareable mode (QT_PM_NO_SOUND_SHARE is still there and has precedence).

File:

• trunk/src/kernel/qsound_pm.cpp (modified) (4 diffs)

trunk/src/kernel/qsound_pm.cpp

@@ -406 +406 @@
     openParams.pszElementName = (PSZ) fileHandle;
     ULONG params = MCI_WAIT | MCI_OPEN_MMIO | MCI_READONLY | MCI_OPEN_TYPE_ID;
-        if ( getenv( "QT_PM_NO_SOUND_SHARE" ) != NULL ) {
+    if ( getenv( "QT_PM_NO_SOUND_SHARE" ) != NULL ) {
 #if defined(QT_DEBUG)
         qDebug( "QAuBucketMMPM: WARNING: opening device for sound file [%s] in "
-                                "exclusive mode due to QT_PM_NO_SOUND_SHARE=%s",
-                                fName.data(), getenv( "QT_PM_NO_SOUND_SHARE" ) );
-#endif
-        } else {
-                params |= MCI_OPEN_SHAREABLE;
-        }
+                "exclusive mode due to QT_PM_NO_SOUND_SHARE=%s",
+                fName.data(), getenv( "QT_PM_NO_SOUND_SHARE" ) );
+#endif
+    } else if ( getenv( "QT_PM_SOUND_SHARE" ) != NULL ) {
+#if defined(QT_DEBUG)
+        qDebug( "QAuBucketMMPM: WARNING: opening device for sound file [%s] in "
+                "shareable mode due to QT_PM_SOUND_SHARE=%s",
+                fName.data(), getenv( "QT_PM_SOUND_SHARE" ) );
+#endif
+        params |= MCI_OPEN_SHAREABLE;
+    } else {
+        // Too pity, but we have to use exclusive mode by default due to
+        // problems with the uniaud driver that is most commonly used nowadays.
+        // In non-exclusive (shared) mode, we will hang up in mmpm.dll doing
+        // mciSendCommand( MCI_CLOSE ) in close() for the last played sound if
+        // we start playing 10 or more sounds simultaneously (i.e. w/o waiting
+        // until the previous one completely finishes playing).
+    }
     ULONG rc = mciSendCommand( 0, MCI_OPEN, params, &openParams, 0 );                
     if ( rc != MCIERR_SUCCESS ) {
@@ -441 +453 @@
     
 #if defined(QT_QSOUND_DEBUG)    
-    qDebug( "QAuBucketMMPM()::close(): {%p} [%s]", this, fName.data() );
+    qDebug( "QAuBucketMMPM::close(): {%p} [%s] atExit=%d",
+            this, fName.data(), atExit );
 #endif    
 
@@ -448 +461 @@
 
     // Use MCI_CLOSE_EXIT to tell the media control driver it should
-    // close immediately, w/o doing for any notifications, etc.
+    // close immediately, w/o waiting or doing any notifications, etc.
     ULONG param = atExit ? MCI_CLOSE_EXIT : 0;
     
@@ -467 +480 @@
 {
 #if defined(QT_QSOUND_DEBUG)    
-    qDebug( "QAuBucketMMPM()::play(): {%p} [%s]", this, fName.data() );
+    qDebug( "QAuBucketMMPM::play(): {%p} [%s]", this, fName.data() );
 #endif