view data/fileio/CoreAudioFileReader.h @ 1376:d9511f9e04d7 dev/refactor-piper-related

Introduce some POD structs for describing an external server application and the desired libraries to load from it, and disambiguating between empty list request and invalid list request. This allows for overriding PiperVampPluginFactory behaviour for using a PluginScan to populate the list request.

/* -*- 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 2006-2012 Chris Cannam and QMUL.

    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 _COREAUDIO_FILE_READER_H_
#define _COREAUDIO_FILE_READER_H_

#ifdef HAVE_COREAUDIO

#include "CodedAudioFileReader.h"

#include "base/Thread.h"

#include <set>

class ProgressReporter;

class CoreAudioFileReader : public CodedAudioFileReader
{
    Q_OBJECT

public:
    CoreAudioFileReader(FileSource source,
                        DecodeMode decodeMode,
                        CacheMode cacheMode,
                        sv_samplerate_t targetRate = 0,
                        bool normalised = false,
                        ProgressReporter *reporter = nullptr);
    virtual ~CoreAudioFileReader();

    virtual QString getError() const { return m_error; }
    virtual QString getLocation() const { return m_source.getLocation(); }
    virtual QString getTitle() const { return m_title; }
    
    static void getSupportedExtensions(std::set<QString> &extensions);
    static bool supportsExtension(QString ext);
    static bool supportsContentType(QString type);
    static bool supports(FileSource &source);

    virtual int getDecodeCompletion() const { return m_completion; }

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

public slots:
    void cancelled();

protected:
    FileSource m_source;
    QString m_path;
    QString m_error;
    QString m_title;

    class D;
    D *m_d;

    ProgressReporter *m_reporter;
    bool m_cancelled;
    int m_completion;

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

    protected:
       // QuickTimeFileReader *m_reader;
    };

    DecodeThread *m_decodeThread;
};

#endif

#endif