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+/*!
+ * \file vdr_decoder.h
+ * \brief A generic decoder for a VDR media plugin (muggle)
+ *
+ * \version $Revision: 1.2 $
+ * \date    $Date: 2004/05/28 15:29:18 $
+ * \author  Ralf Klueber, Lars von Wedel, Andreas Kellner
+ * \author  Responsible author: $Author: lvw $
+ *
+ * $Id: vdr_decoder.h,v 1.2 2004/05/28 15:29:18 lvw Exp $
+ *
+ * Adapted from 
+ * MP3/MPlayer plugin to VDR (C++)
+ * (C) 2001,2002 Stefan Huelswitt <huels@iname.com>
+ */
+
+#ifndef ___DECODER_H
+#define ___DECODER_H
+
+#include <string>
+
+#include <thread.h>
+#include <string>
+
+#define DEC_ID(a,b,c,d) (((a)<<24)+((b)<<16)+((c)<<8)+(d))
+
+// --------From decoder_core.h ------------------------------------
+
+/*! 
+ * \brief The current status of the decoder
+ */
+enum eDecodeStatus
+  { 
+    dsOK=0, dsPlay, dsSkip, dsEof, dsError, dsSoftError 
+  };
+
+// ----------------------------------------------------------------
+
+/*! 
+ * \brief A data structure to put decoded PCM data
+ */
+struct mgDecode
+{
+  eDecodeStatus status;
+  int index;
+  struct mad_pcm *pcm;
+};
+
+// ----------------------------------------------------------------
+
+/*! 
+ * \brief Information about ???
+ */
+class mgPlayInfo
+{
+public:
+  int m_index, m_total;
+};
+
+// ----------------------------------------------------------------
+
+/*! 
+ * \brief Media types
+ */
+enum mgMediaType
+{
+	MT_MP3, MT_MP3_STREAM, MT_OGG, MT_FLAC
+};
+
+/*! 
+ * \brief A generic decoder class to handle conversion into PCM format
+ */
+class mgDecoder
+{
+protected:
+
+  /*! \brief The currently playing file */
+  std::string m_filename;
+
+  /*! \brief Mutexes to coordinate threads */
+  cMutex m_lock, m_locklock;
+  int    m_locked;
+  bool   m_urgentLock;
+  
+  /*! \brief Whether the decoder is currently active */
+  bool m_playing;
+
+  /*! \brief ??? */
+  mgPlayInfo m_playinfo;
+
+  /*! \brief Place a lock */
+  virtual void lock( bool urgent = false );
+
+  /*! \brief Release a lock */
+  virtual void unlock(void);
+
+  /*! \brief Try to obtain a lock */
+  virtual bool tryLock(void);
+
+public:
+
+  /*! \brief The constructor */
+  mgDecoder( std::string filename );
+
+  /*! \brief The destructor */
+  virtual ~mgDecoder();
+
+  /*! \brief Whether a decoder instance is able to play the given file */
+  virtual bool valid() = 0;
+
+  /*! \brief Whether a stream (i.e. from the network is being decoded */
+  virtual bool isStream() 
+    { 
+      return false; 
+    }
+
+  /*! \brief Start decoding */
+  virtual bool start() = 0;
+
+  /*! \brief Stop decoding */
+  virtual bool stop() = 0;
+
+  /*! \brief Skip an amount of time. Impossible by default */
+  virtual bool skip( int seconds, int avail, int rate) 
+    { 
+      return false;
+    }
+
+  /*! \brief Return decoded data */
+  virtual struct mgDecode *decode() = 0;
+
+  /*! \brief Information about the current playback status */
+  virtual mgPlayInfo *playInfo() 
+    { 
+      return 0;
+    }
+};
+  
+// ----------------------------------------------------------------
+
+/*! 
+ * \brief A generic decoder manager class to handle different decoders
+ */
+class mgDecoders
+{
+public:
+  
+  /*! \brief Try to find a valid decoder for a file 
+   */
+  static mgDecoder *findDecoder( std::string filename );
+
+  /*! \brief determine the media type for a given source
+   */
+  static mgMediaType getMediaType( std::string filename );
+
+};
+
+#endif //___DECODER_H