/*!
 * \file  vdr_decoder_mp3.h
 * \brief An mp3 decoder for a VDR media plugin (muggle)
 *
 * \version $Revision: 1.2 $
 * \date    $Date: 2008-04-11 22:11:00 +0200 (Fr, 11 Apr 2008) $
 * \author  Ralf Klueber, Lars von Wedel, Andreas Kellner
 * \author  Responsible author: $Author: woro $
 *
 * $Id: vdr_decoder_mp3.h 1173 2008-04-11 20:11:00Z woro $
 *
 * 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
