OpusDecoder.h

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/*************************************************************************
          OpusDecoder.h  -  sub decoder for Opus 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 OPUS_DECODER_H
#define OPUS_DECODER_H

#ifdef HAVE_OGG_OPUS
#include "config.h"

#include <ogg/ogg.h>
#include <opus/opus.h>
#include <opus/opus_multistream.h>

#include "libkwave/FileInfo.h"
#include "libkwave/MultiTrackSink.h"
#include "libkwave/Sample.h"
#include "libkwave/VorbisCommentMap.h"
#include "libkwave/modules/SampleBuffer.h"

#include "OggSubDecoder.h"
#include "OpusHeader.h"

class QIODevice;
class QWidget;

namespace Kwave
{
    class MultiWriter;
    class StreamObject;

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

        virtual ~OpusDecoder() 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 parseComment(Kwave::FileInfo &info, const QString &comment);

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

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

    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;

        Kwave::opus_header_t m_opus_header;

        OpusMSDecoder *m_opus_decoder;

        Kwave::VorbisCommentMap m_comments_map;

        float *m_raw_buffer;

        Kwave::MultiTrackSink<Kwave::SampleBuffer, true> *m_buffer;

        Kwave::StreamObject *m_rate_converter;

        bool m_output_is_connected;

        unsigned int m_packet_count;

        quint64 m_samples_raw;

        quint64 m_bytes_count;

        int m_packet_len_min;

        int m_packet_len_max;

        int m_packet_size_min;

        int m_packet_size_max;

        qint64 m_granule_first;

        qint64 m_granule_last;

        qint64 m_granule_offset;

        int m_preskip;
    };
}

#endif /* HAVE_OGG_OPUS */

#endif /* OPUS_DECODER_H */

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