1 files changed, 186 insertions, 0 deletions
diff --git a/libk3b/tools/k3bwavefilewriter.cpp b/libk3b/tools/k3bwavefilewriter.cpp
new file mode 100644
index 0000000..36267c2
--- /dev/null
+++ b/libk3b/tools/k3bwavefilewriter.cpp
@@ -0,0 +1,186 @@
+/* 
+ *
+ * $Id: k3bwavefilewriter.cpp 619556 2007-01-03 17:38:12Z trueg $
+ * Copyright (C) 2003 Sebastian Trueg <trueg@k3b.org>
+ *
+ * This file is part of the K3b project.
+ * Copyright (C) 1998-2007 Sebastian Trueg <trueg@k3b.org>
+ *
+ * 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.
+ * See the file "COPYING" for the exact licensing terms.
+ */
+
+
+#include "k3bwavefilewriter.h"
+#include <kdebug.h>
+
+K3bWaveFileWriter::K3bWaveFileWriter()
+  : m_outputStream( &m_outputFile )
+{
+}
+
+
+K3bWaveFileWriter::~K3bWaveFileWriter()
+{
+  close();
+}
+
+
+bool K3bWaveFileWriter::open( const QString& filename )
+{
+  close();
+
+  m_outputFile.setName( filename );
+
+  if( m_outputFile.open( IO_ReadWrite ) ) {
+    m_filename = filename;
+
+    writeEmptyHeader();
+
+    return true;
+  }
+  else {
+    return false;
+  }
+}
+
+
+void K3bWaveFileWriter::close()
+{
+  if( isOpen() ) {
+    if( m_outputFile.at() > 0 ) {
+      padTo2352();
+
+      // update wave header
+      updateHeader();
+
+      m_outputFile.close();
+    }
+    else {
+      m_outputFile.close();
+      m_outputFile.remove();
+    }
+  }
+
+  m_filename = QString::null;
+}
+
+
+bool K3bWaveFileWriter::isOpen()
+{
+  return m_outputFile.isOpen();
+}
+
+
+const QString& K3bWaveFileWriter::filename() const 
+{
+  return m_filename;
+}
+
+
+void K3bWaveFileWriter::write( const char* data, int len, Endianess e )
+{
+  if( isOpen() ) {
+    if( e == LittleEndian ) {
+      m_outputStream.writeRawBytes( data, len );
+    }
+    else {
+      if( len % 2 > 0 ) {
+	kdDebug() << "(K3bWaveFileWriter) data length ("
+		  << len << ") is not a multiple of 2! Cannot swap bytes." << endl;
+	return;
+      }
+
+      // we need to swap the bytes
+      char* buffer = new char[len];
+      for( int i = 0; i < len-1; i+=2 ) {
+	buffer[i] = data[i+1];
+	buffer[i+1] = data[i];
+      }
+      m_outputStream.writeRawBytes( buffer, len );
+
+      delete [] buffer;
+    }
+  }
+}
+
+
+void K3bWaveFileWriter::writeEmptyHeader()
+{
+  static const char riffHeader[] =
+  {
+    0x52, 0x49, 0x46, 0x46, // 0  "RIFF"
+    0x00, 0x00, 0x00, 0x00, // 4  wavSize
+    0x57, 0x41, 0x56, 0x45, // 8  "WAVE"
+    0x66, 0x6d, 0x74, 0x20, // 12 "fmt "
+    0x10, 0x00, 0x00, 0x00, // 16
+    0x01, 0x00, 0x02, 0x00, // 20
+    0x44, 0xac, 0x00, 0x00, // 24
+    0x10, 0xb1, 0x02, 0x00, // 28
+    0x04, 0x00, 0x10, 0x00, // 32
+    0x64, 0x61, 0x74, 0x61, // 36 "data"
+    0x00, 0x00, 0x00, 0x00  // 40 byteCount
+  };
+
+  m_outputStream.writeRawBytes( riffHeader, 44 );
+}
+
+
+void K3bWaveFileWriter::updateHeader()
+{
+  if( isOpen() ) {
+
+    m_outputFile.flush();
+
+    Q_INT32 dataSize( m_outputFile.at() - 44 );
+    Q_INT32 wavSize(dataSize + 44 - 8);
+    char c[4];
+
+    // jump to the wavSize position in the header
+    if( m_outputFile.at( 4 ) ) {
+      c[0] = (wavSize   >> 0 ) & 0xff;
+      c[1] = (wavSize   >> 8 ) & 0xff;
+      c[2] = (wavSize   >> 16) & 0xff;
+      c[3] = (wavSize   >> 24) & 0xff;
+      m_outputStream.writeRawBytes( c, 4 );
+    }
+    else
+      kdDebug() << "(K3bWaveFileWriter) unable to seek in file: " << m_outputFile.name() << endl;
+
+    if( m_outputFile.at( 40 ) ) {
+      c[0] = (dataSize   >> 0 ) & 0xff;
+      c[1] = (dataSize   >> 8 ) & 0xff;
+      c[2] = (dataSize   >> 16) & 0xff;
+      c[3] = (dataSize   >> 24) & 0xff;
+      m_outputStream.writeRawBytes( c, 4 );
+    }
+    else
+      kdDebug() << "(K3bWaveFileWriter) unable to seek in file: " << m_outputFile.name() << endl;
+
+    // jump back to the end
+    m_outputFile.at( m_outputFile.size() );
+  }
+}
+
+
+void K3bWaveFileWriter::padTo2352()
+{ 
+  int bytesToPad = ( m_outputFile.at() - 44 ) % 2352;
+  if( bytesToPad > 0 ) {
+    kdDebug() << "(K3bWaveFileWriter) padding wave file with " << bytesToPad << " bytes." << endl;
+
+    char* c = new char[bytesToPad];
+    memset( c, 0, bytesToPad );
+    m_outputStream.writeRawBytes( c, bytesToPad );
+    delete [] c;
+  }
+}
+
+
+int K3bWaveFileWriter::fd() const
+{
+  return m_outputFile.handle();
+}