Update from personal repository.

* Added an initial "formant preservation" option when pitch shifting
 * Real-time pitch shifting now uses a faster method by default, with
   less variation in CPU usage
 * The code is more amenable to compiler auto-vectorization (through
   e.g. gcc --ftree-vectorize).

src/Thread.h

@@ -3,7 +3,7 @@
 /*
     Rubber Band
     An audio time-stretching and pitch-shifting library.
-    Copyright 2007 Chris Cannam.
+    Copyright 2007-2008 Chris Cannam.
     
     This program is free software; you can redistribute it and/or
     modify it under the terms of the GNU General Public License as
@@ -23,6 +23,10 @@
 
 #include <string>
 
+//#define DEBUG_THREAD 1
+//#define DEBUG_MUTEX 1
+//#define DEBUG_CONDITION 1
+
 namespace RubberBand
 {
 
@@ -73,11 +77,16 @@ public:
 private:
 #ifdef _WIN32
     HANDLE m_mutex;
-    bool m_locked;
+#ifndef NO_THREAD_CHECKS
+    DWORD m_lockedBy;
+#endif
 #else
     pthread_mutex_t m_mutex;
+#ifndef NO_THREAD_CHECKS
+    pthread_t m_lockedBy;
     bool m_locked;
 #endif
+#endif
 };
 
 class MutexLocker
@@ -113,15 +122,17 @@ public:
     void signal();
     
 private:
+
 #ifdef _WIN32
     HANDLE m_mutex;
-    bool m_locked;
     HANDLE m_condition;
-    std::string m_name;
+    bool m_locked;
 #else
     pthread_mutex_t m_mutex;
-    bool m_locked;
     pthread_cond_t m_condition;
+    bool m_locked;
+#endif
+#ifdef DEBUG_CONDITION
     std::string m_name;
 #endif
 };