1 files changed, 97 insertions, 0 deletions
diff --git a/kttsd/libkttsd/stretcher.h b/kttsd/libkttsd/stretcher.h
new file mode 100644
index 0000000..e4d8686
--- /dev/null
+++ b/kttsd/libkttsd/stretcher.h
@@ -0,0 +1,97 @@
+/***************************************************** vim:set ts=4 sw=4 sts=4:
+  Description: 
+     Speeds up or slows down an audio file by stretching the audio stream.
+     Uses the sox program to do the stretching.
+
+  Copyright:
+  (C) 2004 by Gary Cramblitt <garycramblitt@comcast.net>
+  -------------------
+  Original author: Gary Cramblitt <garycramblitt@comcast.net>
+
+  This program is free software; you can redistribute it and/or modify
+  it under the terms of the GNU General Public License as published by
+  the Free Software Foundation; either version 2 of the License, or
+  (at your option) any later version.
+
+  This program is distributed in the hope that it will be useful,
+  but WITHOUT ANY WARRANTY; without even the implied warranty of
+  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+  GNU General Public License for more details.
+
+  You should have received a copy of the GNU General Public License
+  along with this program; if not, write to the Free Software
+  Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
+ ******************************************************************************/
+
+#ifndef _STRETCHER_H_
+#define _STRETCHER_H_
+
+#include <kdemacros.h>
+#include "kdeexportfix.h"
+
+class KProcess;
+
+class KDE_EXPORT Stretcher : public QObject{
+    Q_OBJECT
+
+    public:
+        /**
+         * Constructor.
+         */
+        Stretcher(QObject *parent = 0, const char *name = 0);
+
+        /**
+         * Destructor.
+         */
+        ~Stretcher();
+
+        enum StretcherState {
+            ssIdle = 0,             // Not doing anything.  Ready to stretch.
+            ssStretching = 1,       // Stretching.
+            ssFinished = 2          // Stretching finished.
+        };
+
+        /**
+         * Stretch the given input file to an output file.
+         * @param inFilename        Name of input audio file.
+         * @param outFilename       Name of output audio file.
+         * @param stretchFactor     Amount to stretch.  2.0 is twice as slow.  0.5 is twice as fast.
+         */
+        bool stretch(const QString &inFilename, const QString &outFilename, float stretchFactor);
+
+        /**
+        * Returns the state of the Stretcher.
+        */
+        int getState();
+
+        /**
+         * Returns the output filename (as given in call to stretch).
+         */
+        QString getOutFilename();
+
+        /**
+        * Acknowledges the finished stretching.
+        */
+        void ackFinished();
+
+    signals:
+        /**
+         * Emitted whenever stretching is completed.
+         */
+        void stretchFinished();
+
+    private slots:
+        void slotProcessExited(KProcess* proc);
+
+    private:
+        // Stretcher state.
+        int m_state;
+
+        // Sox process.
+        KProcess* m_stretchProc;
+
+        // Output file name.
+        QString m_outFilename;
+};
+
+#endif      // _STRETCHER_H_