/*!
 * \file  vdr_decoder_mp3.h
 * \brief An mp3 decoder for a VDR media plugin (muggle)
 *
 * \version $Revision: 1.2 $
 * \date    $Date: 2005-07-30 01:00:53 +0200 (Sat, 30 Jul 2005) $
 * \author  Ralf Klueber, Lars von Wedel, Andreas Kellner
 * \author  Responsible author: $Author: LarsAC $
 *
 * $Id: vdr_decoder_mp3.h 791 2005-07-29 23:00:53Z LarsAC $
 *
 * 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;

// ----------------------------------------------------------------

/*!
 * \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 (mgItemGd * 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
