MP3Decoder.h

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/*************************************************************************
           MP3Decoder.h  -  decoder for MP3 data
                             -------------------
    begin                : Wed Aug 07 2002
    copyright            : (C) 2002 by Thomas Eschenbacher
    email                : Thomas.Eschenbacher@gmx.de
 ***************************************************************************/

/***************************************************************************
 *                                                                         *
 *   This program is free software; you can redistribute it and/or modify  *
 *   it under the terms of the GNU General Public License as published by  *
 *   the Free Software Foundation; either version 2 of the License, or     *
 *   (at your option) any later version.                                   *
 *                                                                         *
 ***************************************************************************/

#ifndef MP3_DECODER_H
#define MP3_DECODER_H

#include "config.h"

#include <mad.h>                // needs libmad-devel package

#include <id3/globals.h>

#include <QString>

#include "libkwave/Decoder.h"
#include "libkwave/FileInfo.h"

#include "ID3_PropertyMap.h"

class ID3_Frame;
class ID3_Tag;
class QWidget;

namespace Kwave
{
    class MP3Decoder: public Kwave::Decoder
    {
    public:

        MP3Decoder();

        virtual ~MP3Decoder();

        virtual Kwave::Decoder *instance();

        virtual bool open(QWidget *widget, QIODevice &source);

        virtual bool decode(QWidget *widget, Kwave::MultiWriter &dst);

        virtual void close();

        enum mad_flow fillInput(struct mad_stream *stream);

        enum mad_flow processOutput(void *data,
                                    struct mad_header const *header,
                                    struct mad_pcm *pcm);

        enum mad_flow handleError(void *data, struct mad_stream *stream,
                                struct mad_frame *frame);

    private:

        bool parseMp3Header(const Mp3_Headerinfo &header, QWidget *widget);

        bool parseID3Tags(ID3_Tag &tag);

        QString parseId3Frame2String(const ID3_Frame *frame);

    private:

        ID3_PropertyMap m_property_map;

        QIODevice *m_source;

        Kwave::MultiWriter *m_dest;

        unsigned char *m_buffer;

        int m_buffer_size;

         size_t m_prepended_bytes;

        size_t m_appended_bytes;

        unsigned int m_failures;

        QWidget *m_parent_widget;

    };
}

#endif /* MP3_DECODER_H */

//***************************************************************************
//***************************************************************************