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#include <gtest/gtest.h>
#include <taglib/textidentificationframe.h>
#include <taglib/tstring.h>
#include <QDir>
#include <QtDebug>
#include "track/beats.h"
#include "track/serato/beatgrid.h"
#include "track/serato/beatsimporter.h"
#include "util/memory.h"
namespace {
// Maximum allowed frame position inaccuracy after reimport
constexpr double kEpsilon = 0.1;
} // namespace
namespace mixxx {
class SeratoBeatGridTest : public testing::Test {
protected:
bool parseBeatGridData(const QByteArray& inputValue,
bool valid,
mixxx::taglib::FileType fileType,
QByteArray* output = nullptr) {
mixxx::SeratoBeatGrid seratoBeatGrid;
bool parseOk = mixxx::SeratoBeatGrid::parse(
&seratoBeatGrid, inputValue, fileType);
EXPECT_EQ(valid, parseOk);
if (!parseOk) {
return false;
}
QByteArray outputValue = seratoBeatGrid.dump(fileType);
EXPECT_EQ(inputValue, outputValue);
if (inputValue != outputValue) {
if (output) {
output->clear();
output->append(outputValue);
}
return false;
}
return true;
}
void parseBeatGridDataInDirectory(
QDir dir, mixxx::taglib::FileType fileType) {
EXPECT_TRUE(dir.exists());
dir.setFilter(QDir::Files);
dir.setNameFilters(QStringList() << "*.octet-stream");
QFileInfoList fileList = dir.entryInfoList();
EXPECT_FALSE(fileList.isEmpty());
for (const QFileInfo& fileInfo : fileList) {
qDebug() << "--- File:" << fileInfo.fileName();
QFile file(dir.filePath(fileInfo.fileName()));
bool openOk = file.open(QIODevice::ReadOnly);
EXPECT_TRUE(openOk);
if (!openOk) {
continue;
}
QByteArray data = file.readAll();
QByteArray actualData;
if (!parseBeatGridData(data, true, fileType, &actualData)) {
QFile outfile(file.fileName() + QStringLiteral(".actual"));
openOk = outfile.open(QIODevice::WriteOnly);
EXPECT_TRUE(openOk);
if (!openOk) {
continue;
}
EXPECT_EQ(actualData.size(), outfile.write(actualData));
}
}
}
void parseEmptyBeatGridData(mixxx::taglib::FileType fileType) {
QByteArray inputValue;
mixxx::SeratoBeatGrid seratoBeatGrid;
mixxx::SeratoBeatGrid::parse(&seratoBeatGrid, inputValue, fileType);
QByteArray outputValue = seratoBeatGrid.dump(fileType);
EXPECT_EQ(inputValue, outputValue);
}
};
TEST_F(SeratoBeatGridTest, ParseBeatGridDataMP3) {
parseBeatGridDataInDirectory(QDir("src/test/serato/data/mp3/beatgrid"),
mixxx::taglib::FileType::MP3);
}
TEST_F(SeratoBeatGridTest, ParseEmptyDataMP3) {
parseEmptyBeatGridData(mixxx::taglib::FileType::MP3);
}
TEST_F(SeratoBeatGridTest, ParseBeatGridDataMP4) {
parseBeatGridDataInDirectory(QDir("src/test/serato/data/mp4/beatgrid"),
mixxx::taglib::FileType::MP4);
}
TEST_F(SeratoBeatGridTest, ParseEmptyDataMP4) {
parseEmptyBeatGridData(mixxx::taglib::FileType::MP4);
}
TEST_F(SeratoBeatGridTest, ParseBeatGridDataFLAC) {
parseBeatGridDataInDirectory(QDir("src/test/serato/data/flac/beatgrid"),
mixxx::taglib::FileType::FLAC);
}
TEST_F(SeratoBeatGridTest, ParseEmptyDataFLAC) {
parseEmptyBeatGridData(mixxx::taglib::FileType::FLAC);
}
TEST_F(SeratoBeatGridTest, SerializeBeatgrid) {
// Create a const beatgrid at 120 BPM
constexpr mixxx::Bpm bpm(120.0);
const auto sampleRate = mixxx::audio::SampleRate(44100);
EXPECT_EQ(sampleRate.isValid(), true);
const auto pBeats = mixxx::Beats::fromConstTempo(
sampleRate, mixxx::audio::kStartFramePos, bpm);
const auto signalInfo = mixxx::audio::SignalInfo(mixxx::audio::ChannelCount(2), sampleRate);
const auto duration = mixxx::Duration::fromSeconds<int>(300);
// Serialize that beatgrid into Serato BeatGrid data and check if it's correct
mixxx::SeratoBeatGrid seratoBeatGrid;
seratoBeatGrid.setBeats(pBeats, signalInfo, duration, 0);
EXPECT_EQ(seratoBeatGrid.nonTerminalMarkers().size(), 0);
EXPECT_NE(seratoBeatGrid.terminalMarker(), nullptr);
EXPECT_FLOAT_EQ(seratoBeatGrid.terminalMarker()->bpm(), static_cast<float>(bpm.value()));
}
TEST_F(SeratoBeatGridTest, SerializeBeatMap) {
// Create a non-const beatmap
constexpr double timingOffsetMillis = -10;
constexpr mixxx::Bpm bpm(120);
const auto sampleRate = mixxx::audio::SampleRate(44100);
const auto signalInfo = mixxx::audio::SignalInfo(mixxx::audio::ChannelCount(2), sampleRate);
const auto duration = mixxx::Duration::fromSeconds<int>(300);
const mixxx::audio::FrameDiff_t framesPerMinute = signalInfo.getSampleRate() * 60;
const mixxx::audio::FrameDiff_t framesPerBeat = framesPerMinute / bpm.value();
const mixxx::audio::FrameDiff_t initialFrameOffset = framesPerBeat / 2;
QVector<mixxx::audio::FramePos> beatPositionsFrames;
mixxx::audio::FramePos beatPositionFrames = mixxx::audio::FramePos(initialFrameOffset);
constexpr int kNumBeats120BPM = 4;
qInfo() << "Step 1: Add" << kNumBeats120BPM << "beats at 100 bpm to the beatgrid";
for (int i = 0; i < kNumBeats120BPM; i++) {
beatPositionsFrames.append(beatPositionFrames);
beatPositionFrames += framesPerBeat;
}
ASSERT_EQ(beatPositionsFrames.size(), kNumBeats120BPM);
// Check the const beatmap
{
const auto pBeats = mixxx::Beats::fromBeatPositions(sampleRate, beatPositionsFrames);
// Check that the first section's BPM is 100
EXPECT_EQ(pBeats->getBpmAroundPosition(
mixxx::audio::FramePos(initialFrameOffset +
framesPerBeat * kNumBeats120BPM / 2),
1),
bpm);
mixxx::SeratoBeatGrid seratoBeatGrid;
seratoBeatGrid.setBeats(pBeats, signalInfo, duration, timingOffsetMillis);
EXPECT_EQ(seratoBeatGrid.nonTerminalMarkers().size(), 0);
EXPECT_NE(seratoBeatGrid.terminalMarker(), nullptr);
EXPECT_FLOAT_EQ(seratoBeatGrid.terminalMarker()->bpm(), static_cast<float>(bpm.value()));
// Check if the beats can be re-imported losslessly
mixxx::SeratoBeatsImporter beatsImporter(
seratoBeatGrid.nonTerminalMarkers(),
seratoBeatGrid.terminalMarker());
const auto pImportedBeats =
beatsImporter.importBeatsAndApplyTimingOffset(
timingOffsetMillis, signalInfo);
auto pBeatsIterator =
pImportedBeats->findBeats(beatPositionsFrames.first() - 1000,
beatPositionsFrames.last() + 1000);
for (int i = 0; i < beatPositionsFrames.size(); i++) {
const auto importedPosition = pBeatsIterator->next();
EXPECT_NEAR(beatPositionsFrames[i].value(),
importedPosition.value(),
kEpsilon);
}
ASSERT_FALSE(pBeatsIterator->hasNext());
}
constexpr int kNumBeats60BPM = 4;
qInfo() << "Step 2: Add" << kNumBeats60BPM << "beats at 50 bpm to the beatgrid";
for (int i = 0; i < kNumBeats60BPM; i++) {
beatPositionsFrames.append(beatPositionFrames);
beatPositionFrames += framesPerBeat * 2;
}
ASSERT_EQ(beatPositionsFrames.size(), kNumBeats120BPM + kNumBeats60BPM);
{
const auto pBeats = mixxx::Beats::fromBeatPositions(sampleRate, beatPositionsFrames);
// Check that the first section'd BPM is 100
EXPECT_EQ(pBeats->getBpmAroundPosition(
mixxx::audio::FramePos(initialFrameOffset +
framesPerBeat * kNumBeats120BPM / 2),
1),
bpm);
// Check that the second section'd BPM is 50
EXPECT_EQ(pBeats->getBpmAroundPosition(
mixxx::audio::FramePos(initialFrameOffset +
framesPerBeat * kNumBeats120BPM +
framesPerBeat * kNumBeats60BPM / 2),
1),
bpm / 2);
mixxx::SeratoBeatGrid seratoBeatGrid;
seratoBeatGrid.setBeats(pBeats, signalInfo,
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