Timeline: Fix diskstream flushing/shutdown.

timeline/src/Engine/Disk_Stream.C

@@ -77,8 +77,6 @@ Disk_Stream::~Disk_Stream ( )
 
 //    timeline->wrlock();
 
-    shutdown();
-
      _track = NULL;
 
     sem_destroy( &_blocks );
@@ -134,7 +132,7 @@ Disk_Stream::shutdown ( void )
         while ( _terminate )
         {
             block_processed();
-            usleep( 1000 );
+            usleep( 10 * 1000 );
         }
         
         _thread.join();

timeline/src/Engine/Playback_DS.C

@@ -183,6 +183,8 @@ done:
     free(buf);
     free(cbuf);
 
+//    flush();
+
     _terminate = false;
 
     _thread.exit();

timeline/src/Engine/Playback_DS.H

@@ -39,6 +39,8 @@ public:
             run();
         }
 
+    virtual ~Playback_DS ( ) { shutdown(); }
+
     bool seek_pending ( void );
     void seek ( nframes_t frame );
     nframes_t process ( nframes_t nframes );

timeline/src/Engine/Record_DS.C

@@ -152,6 +152,8 @@ Record_DS::disk_thread ( void )
 
     delete c;
 
+    flush();
+
     _terminate = false;
 
     DMESSAGE( "capture thread gone" );

timeline/src/Engine/Record_DS.H

@@ -44,7 +44,7 @@ class Record_DS : public Disk_Stream
     void write_block ( sample_t *buf, nframes_t nframes );
     void disk_thread ( void );
 
-    void flush ( void ) { base_flush( false ); }
+    virtual void flush ( void ) { base_flush( false ); }
 
 public:
 
@@ -60,6 +60,8 @@ public:
             _frames_written = 0;
         }
 
+    virtual ~Record_DS ( ) { shutdown(); }
+
 /*     bool seek_pending ( void ); */
 /*     void seek ( nframes_t frame ); */
     const Audio_Region * capture_region ( void ) const;