view data/fileio/test/AudioFileWriterTest.h @ 1394:9ef1cc26024c

Add Range01 normalisation method to ColumnOp. This is the normalisation that is actually used in the Colour 3D Plot layer historically when column normalisation is enabled (not Max1 after all).

/* -*- 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 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 TEST_AUDIO_FILE_WRITER_H
#define TEST_AUDIO_FILE_WRITER_H

#include "../AudioFileReaderFactory.h"
#include "../AudioFileReader.h"
#include "../WavFileWriter.h"

#include "AudioTestData.h"

#include "bqvec/VectorOps.h"
#include "bqvec/Allocators.h"

#include <cmath>

#include <QObject>
#include <QtTest>
#include <QDir>

#include <iostream>

using namespace std;
using namespace breakfastquay;

class AudioFileWriterTest : public QObject
{
    Q_OBJECT

private:
    QString testDirBase;
    QString outDir;

    static const int rate = 44100;
    
public:
    AudioFileWriterTest(QString base) {
        if (base == "") {
            base = "svcore/data/fileio/test";
        }
        testDirBase = base;
        outDir = base + "/outfiles";
    }

    const char *strOf(QString s) {
        return strdup(s.toLocal8Bit().data());
    }
    
    QString testName(bool direct, int channels) {
        return QString("%1 %2 %3")
            .arg(channels)
            .arg(channels > 1 ? "channels" : "channel")
            .arg(direct ? "direct" : "via temporary");
    }

private slots:
    void init()
    {
        if (!QDir(outDir).exists() && !QDir().mkpath(outDir)) {
            cerr << "ERROR: Audio out directory \"" << outDir << "\" does not exist and could not be created" << endl;
            QVERIFY2(QDir(outDir).exists(), "Audio out directory not found and could not be created");
        }
    }

    void write_data()
    {
        QTest::addColumn<bool>("direct");
        QTest::addColumn<int>("channels");
        for (int direct = 0; direct <= 1; ++direct) {
            for (int channels = 1; channels < 8; ++channels) {
                if (channels == 1 || channels == 2 ||
                    channels == 5 || channels == 8) {
                    QString desc = testName(direct, channels);
                    QTest::newRow(strOf(desc)) << (bool)direct << channels;
                }
            }
        }
    }
    
    void write()
    {
        QFETCH(bool, direct);
        QFETCH(int, channels);

        QString outfile = QString("%1/out-%2ch-%3.wav")
            .arg(outDir).arg(channels).arg(direct ? "direct" : "via-temporary");
        
        WavFileWriter writer(outfile,
                             rate,
                             channels,
                             direct ?
                             WavFileWriter::WriteToTarget :
                             WavFileWriter::WriteToTemporary);
        QVERIFY(writer.isOK());

        AudioTestData data(rate, channels);
        data.generate();

        sv_frame_t frameCount = data.getFrameCount();
        float *interleaved = data.getInterleavedData();
        float **nonInterleaved = allocate_channels<float>(channels, frameCount);
        v_deinterleave(nonInterleaved, interleaved, channels, int(frameCount));
        bool ok = writer.writeSamples(nonInterleaved, frameCount);
        deallocate_channels(nonInterleaved, channels);
        QVERIFY(ok);
        
        ok = writer.close();
        QVERIFY(ok);

        AudioFileReaderFactory::Parameters params;
        AudioFileReader *rereader =
            AudioFileReaderFactory::createReader(outfile, params);
        QVERIFY(rereader != nullptr);
        
        floatvec_t readFrames = rereader->getInterleavedFrames(0, frameCount);
        floatvec_t expected(interleaved, interleaved + frameCount * channels);
        QCOMPARE(readFrames, expected);

        delete rereader;
    }
};

#endif