view data/fileio/OggVorbisFileReader.h @ 263:71dfc6ab3b54

* Threaded mp3/ogg file reading. Not activated yet, as it doesn't work in context (SV needs to know the duration of its main model at the outset)
author Chris Cannam
date Thu, 24 May 2007 16:20:22 +0000
parents c03ec31005e1
children e08f486e8d8c
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/* -*- c-basic-offset: 4 indent-tabs-mode: nil -*-  vi:set ts=8 sts=4 sw=4: */

/*
    Sonic Visualiser
    An audio file viewer and annotation editor.
    Centre for Digital Music, Queen Mary, University of London.
    This file copyright 2006 Chris Cannam.
    
    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.  See the file
    COPYING included with this distribution for more information.
*/

#ifndef _OGG_VORBIS_FILE_READER_H_
#define _OGG_VORBIS_FILE_READER_H_

#ifdef HAVE_OGGZ
#ifdef HAVE_FISHSOUND

#include "CodedAudioFileReader.h"

#include "base/Thread.h"
#include <oggz/oggz.h>
#include <fishsound/fishsound.h>

#include <set>

class QProgressDialog;

class OggVorbisFileReader : public CodedAudioFileReader
{
public:
    enum DecodeMode {
        DecodeAtOnce, // decode the file on construction, with progress dialog
        DecodeThreaded // decode in a background thread after construction
    };

    OggVorbisFileReader(QString path, DecodeMode decodeMode,
                        CacheMode cacheMode);
    virtual ~OggVorbisFileReader();

    virtual QString getError() const { return m_error; }

    static void getSupportedExtensions(std::set<QString> &extensions);

    virtual bool isUpdating() const {
        return m_decodeThread && m_decodeThread->isRunning();
    }

protected:
    QString m_path;
    QString m_error;

    OGGZ *m_oggz;
    FishSound *m_fishSound;
    QProgressDialog *m_progress;
    size_t m_fileSize;
    size_t m_bytesRead;
    bool m_cancelled;
 
    static int readPacket(OGGZ *, ogg_packet *, long, void *);
    static int acceptFrames(FishSound *, float **, long, void *);

    class DecodeThread : public Thread
    {
    public:
        DecodeThread(OggVorbisFileReader *reader) : m_reader(reader) { }
        virtual void run();

    protected:
        OggVorbisFileReader *m_reader; 
    };

    DecodeThread *m_decodeThread;
};

#endif
#endif

#endif