view data/fileio/DecodingWavFileReader.h @ 1881:b504df98c3be

Ensure completion on output model is started at zero, so if it's checked before the input model has become ready and the transform has begun, it is not accidentally reported as complete (affected re-aligning models in Sonic Lineup when replacing the session)

/* -*- 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 2007 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 SV_DECODING_WAV_FILE_READER_H
#define SV_DECODING_WAV_FILE_READER_H

#include "CodedAudioFileReader.h"

#include "base/Thread.h"

#include <set>
#include <atomic>

class WavFileReader;
class ProgressReporter;

class DecodingWavFileReader : public CodedAudioFileReader
{
    Q_OBJECT
public:
    DecodingWavFileReader(FileSource source,
                          DecodeMode decodeMode, // determines when to resample
                          CacheMode cacheMode,
                          sv_samplerate_t targetRate = 0,
                          bool normalised = false,
                          ProgressReporter *reporter = 0);
    virtual ~DecodingWavFileReader();

    QString getTitle() const override { return m_title; }
    QString getMaker() const override { return m_maker; }
    
    QString getError() const override { return m_error; }
    QString getLocation() const override { return m_source.getLocation(); }

    static void getSupportedExtensions(std::set<QString> &extensions);
    static bool supportsExtension(QString ext);
    static bool supportsContentType(QString type);
    static bool supports(FileSource &source);

    int getDecodeCompletion() const override { return m_completion; }

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

public slots:
    void cancelled();

protected:
    FileSource m_source;
    QString m_title;
    QString m_maker;
    QString m_path;
    QString m_error;
    std::atomic<bool> m_cancelled;
    sv_frame_t m_processed;
    int m_completion;

    WavFileReader *m_original;
    ProgressReporter *m_reporter;

    void addBlock(const floatvec_t &frames);
    
    class DecodeThread : public Thread
    {
    public:
        DecodeThread(DecodingWavFileReader *reader) : m_reader(reader) { }
        void run() override;

    protected:
        DecodingWavFileReader *m_reader;
    };

    DecodeThread *m_decodeThread;
};

#endif