--- a
+++ b/mpd2src/audioreader.h
@@ -0,0 +1,74 @@
+/* Copyright (C) 2015 J.F.Dockes
+ *   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.,
+ *   59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
+ */
+
+#ifndef _AUDIOREADER_H_INCLUDED_
+#define _AUDIOREADER_H_INCLUDED_
+
+#include <string>
+
+// This just somewhat encapsulates the code in the original
+// WavSender.cpp The file is still read and converted in memory at
+// once, and held in a memory array
+class AudioReader {
+public:
+    AudioReader() {
+        m_numChannels = m_sampleRate = 0;
+    }
+    virtual ~AudioReader() {}
+
+    virtual bool open() = 0;
+
+    virtual bool isblocking() {return false;}
+    
+    // Get pointer to data buffer of specified offset and size.
+    virtual const unsigned char *data(size_t cnt) = 0;
+
+    // Return, compute if necessary, misc audio stream parameters:
+    virtual unsigned int numChannels() {
+        return m_numChannels;
+    }
+    virtual unsigned int sampleRate() {
+        return m_sampleRate;
+    }
+    virtual unsigned int bitsPerSample() {
+        return m_bitsPerSample;
+    }
+    virtual unsigned int byteRate() {
+        return m_numChannels * m_sampleRate * m_bitsPerSample / 8;
+    }
+    virtual unsigned int bytesPerSample() {
+        return m_bitsPerSample / 8;
+    }
+    virtual unsigned int bytesPerFrame() {
+        return bytesPerSample() * m_numChannels;
+    }
+    virtual unsigned int sampleCount() {
+        return 0;
+    }
+
+protected:
+    void setAudioParams(int sampleRate, int bitsPerSample, int chans) {
+        m_numChannels = chans;
+        m_sampleRate = sampleRate;
+        m_bitsPerSample = bitsPerSample;
+    }
+    unsigned int m_numChannels;
+    unsigned int m_sampleRate; // sampling frequency, Hz
+    unsigned int m_bitsPerSample;
+};
+
+#endif /* _AUDIOREADER_H_INCLUDED_ */