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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: 2004/05/28 15:29:19 $
* \author Ralf Klueber, Lars von Wedel, Andreas Kellner
* \author Responsible author: $Author: lvw $
*
* $Id: vdr_decoder_mp3.h,v 1.2 2004/05/28 15:29:19 lvw Exp $
*
* 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( std::string filename, 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
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