1 files changed, 114 insertions, 0 deletions
diff --git a/muggle-plugin/vdr_decoder_mp3.h b/muggle-plugin/vdr_decoder_mp3.h
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+++ b/muggle-plugin/vdr_decoder_mp3.h
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+/*!
+ * \file  vdr_decoder_mp3.h
+ * \brief An mp3 decoder for a VDR media plugin (muggle)
+ *
+ * \version $Revision: 1.2 $
+ * \date    $Date$
+ * \author  Ralf Klueber, Lars von Wedel, Andreas Kellner
+ * \author  Responsible author: $Author$
+ *
+ * $Id$
+ *
+ * Adapted from
+ * MP3/MPlayer plugin to VDR (C++)
+ * (C) 2001,2002 Stefan Huelswitt <huels@iname.com>
+ */
+
+#ifndef ___DECODER_MP3_H
+#define ___DECODER_MP3_H
+
+#define DEC_MP3     DEC_ID('M','P','3',' ')
+#define DEC_MP3_STR "MP3"
+
+#include <mad.h>
+#include <string>
+
+#include "vdr_decoder.h"
+
+#if MAD_F_FRACBITS != 28
+#warning libmad with MAD_F_FRACBITS != 28 not tested
+#endif
+
+class mgStream;
+class mgContentItem;
+
+// ----------------------------------------------------------------
+
+/*!
+ * \brief A class to decode mp3 songs into PCM using libmad
+ */
+class mgMP3Decoder:public mgDecoder
+{
+    private:
+        struct mgDecode m_ds;
+
+//
+        struct mad_stream m_madstream;
+        struct mad_frame *m_madframe;
+        struct mad_synth *m_madsynth;
+        mad_timer_t m_playtime, m_skiptime;
+
+//
+        struct FrameInfo
+        {
+            unsigned long long Pos;
+            mad_timer_t Time;
+        } *m_frameinfo;
+
+        int m_framenum, m_framemax, m_errcount, m_mute;
+
+        void init ();
+
+        void clean ();
+
+        struct mgDecode *done (eDecodeStatus status);
+
+        virtual mgPlayInfo *playInfo ();
+
+        eDecodeStatus decodeError (bool hdr);
+
+        void makeSkipTime (mad_timer_t * skiptime, mad_timer_t playtime,
+            int secs, int avail, int dvbrate);
+
+    protected:
+        mgStream * m_stream;
+        bool m_isStream;
+
+    public:
+
+/*!
+ * \brief construct a decoder from a filename
+ */
+        mgMP3Decoder (mgContentItem * item, bool preinit = true);
+
+/*!
+ * \brief the destructor
+ */
+        virtual ~ mgMP3Decoder ();
+
+/*!
+ * \brief check, whether the file contains useable MP3 content
+ */
+        virtual bool valid ();
+
+/*!
+ * \brief start the decoding process
+ */
+        virtual bool start ();
+
+/*!
+ * \brief stop the decoding process
+ */
+        virtual bool stop ();
+
+/*!
+ * \brief skip an amount of seconds
+ */
+        virtual bool skip (int seconds, int avail, int rate);
+
+/*!
+ * \brief the actual decoding function (uses libmad)
+ */
+        virtual struct mgDecode *decode ();
+};
+#endif                                            //___DECODER_MP3_H