VorbisDecoder.h

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/*************************************************************************
       VorbisDecoder.h  -  sub decoder for Vorbis in an Ogg container
                             -------------------
    begin                : Wed Dec 26 2012
    copyright            : (C) 2012 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 VORBIS_DECODER_H
#define VORBIS_DECODER_H

#ifdef HAVE_OGG_VORBIS
#include "config.h"

#include <vorbis/codec.h>

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

#include "OggSubDecoder.h"

class QIODevice;
class QWidget;

namespace Kwave
{
    class VorbisDecoder: public Kwave::OggSubDecoder
    {
    public:
        explicit VorbisDecoder(QIODevice *source,
                               ogg_sync_state &oy,
                               ogg_stream_state &os,
                               ogg_page &og,
                               ogg_packet &op);

        virtual ~VorbisDecoder() Q_DECL_OVERRIDE {}

        virtual int open(QWidget *widget, Kwave::FileInfo &info) Q_DECL_OVERRIDE;

        virtual int decode(Kwave::MultiWriter &dst) Q_DECL_OVERRIDE;

        virtual void reset() Q_DECL_OVERRIDE;

        virtual void close(Kwave::FileInfo &info) Q_DECL_OVERRIDE;

    protected:

        void parseTag(Kwave::FileInfo &info, const char *tag,
                      Kwave::FileProperty property);

    private:
        QIODevice *m_source;

        qint64 m_stream_start_pos;

        sample_index_t m_samples_written;

        ogg_sync_state &m_oy;

        ogg_stream_state &m_os;

        ogg_page &m_og;

        ogg_packet &m_op;

        vorbis_info m_vi;

        vorbis_comment m_vc;

        vorbis_dsp_state m_vd;

        vorbis_block m_vb;
    };
}

#endif /* HAVE_OGG_VORBIS */

#endif /* VORBIS_DECODER_H */

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