From 00bb99ac80741fc50ef8a289719373032f2391eb Mon Sep 17 00:00:00 2001
From: toma <toma@283d02a7-25f6-0310-bc7c-ecb5cbfe19da>
Date: Wed, 25 Nov 2009 17:56:58 +0000
Subject: Copy the KDE 3.5 branch to branches/trinity for new KDE 3.5 features.
 BUG:215923

git-svn-id: svn://anonsvn.kde.org/home/kde/branches/trinity/kdeaccessibility@1054174 283d02a7-25f6-0310-bc7c-ecb5cbfe19da
---
 kttsd/libkttsd/stretcher.cpp | 99 ++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 99 insertions(+)
 create mode 100644 kttsd/libkttsd/stretcher.cpp

(limited to 'kttsd/libkttsd/stretcher.cpp')

diff --git a/kttsd/libkttsd/stretcher.cpp b/kttsd/libkttsd/stretcher.cpp
new file mode 100644
index 0000000..d3a3984
--- /dev/null
+++ b/kttsd/libkttsd/stretcher.cpp
@@ -0,0 +1,99 @@
+/***************************************************** 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.
+ ******************************************************************************/
+
+// KDE includes.
+#include <kprocess.h>
+#include <kdebug.h>
+
+// Stretcher includes.
+#include "stretcher.h"
+#include "stretcher.moc"
+
+/**
+ * Constructor.
+ */
+Stretcher::Stretcher(QObject *parent, const char *name) :
+    QObject(parent, name)
+{
+    m_state = 0;
+    m_stretchProc = 0;
+}
+
+/**
+ * Destructor.
+ */
+Stretcher::~Stretcher()
+{
+    delete m_stretchProc;
+}
+
+/**
+ * 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.
+ * @return                  False if an error occurs.
+ */
+bool Stretcher::stretch(const QString &inFilename, const QString &outFilename, float stretchFactor)
+{
+    if (m_stretchProc) return false;
+    m_outFilename = outFilename;
+    m_stretchProc = new KProcess;
+    QString stretchStr = QString("%1").arg(stretchFactor, 0, 'f', 3);
+    *m_stretchProc << "sox" << inFilename << outFilename << "stretch" << stretchStr;
+    connect(m_stretchProc, SIGNAL(processExited(KProcess*)),
+        this, SLOT(slotProcessExited(KProcess*)));
+    if (!m_stretchProc->start(KProcess::NotifyOnExit, KProcess::NoCommunication))
+    {
+        kdDebug() << "Stretcher::stretch: Error starting audio stretcher process.  Is sox installed?" << endl;
+        return false;
+    }
+    m_state = ssStretching;
+    return true;
+}
+
+void Stretcher::slotProcessExited(KProcess*)
+{
+    m_stretchProc->deleteLater();
+    m_stretchProc = 0;
+    m_state = ssFinished;
+    emit stretchFinished();
+}
+
+/**
+ * Returns the state of the Stretcher.
+ */
+int Stretcher::getState() { return m_state; }
+
+/**
+ * Returns the output filename (as given in call to stretch).
+ */
+QString Stretcher::getOutFilename() { return m_outFilename; }
+
+/**
+ * Acknowledges the finished stretching.
+ */
+void Stretcher::ackFinished() { m_state = ssIdle; }
+
-- 
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