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#include <gtest/gtest.h>
#include <QtDebug>
#include <QScopedPointer>
#include "engine/cachingreader/cachingreader.h"
#include "control/controlobject.h"
#include "engine/controls/loopingcontrol.h"
#include "engine/readaheadmanager.h"
#include "test/mixxxtest.h"
#include "util/assert.h"
#include "util/defs.h"
#include "util/sample.h"
namespace {
const QString kGroup = "[test]";
}
class StubReader : public CachingReader {
public:
StubReader()
: CachingReader(kGroup, UserSettingsPointer()) {
}
CachingReader::ReadResult read(SINT startSample, SINT numSamples, bool reverse,
CSAMPLE* buffer) override {
Q_UNUSED(startSample);
Q_UNUSED(reverse);
SampleUtil::clear(buffer, numSamples);
return CachingReader::ReadResult::AVAILABLE;
}
};
class StubLoopControl : public LoopingControl {
public:
StubLoopControl()
: LoopingControl(kGroup, UserSettingsPointer()) {
}
void pushTriggerReturnValue(double value) {
m_triggerReturnValues.push_back(value);
}
void pushTargetReturnValue(double value) {
m_targetReturnValues.push_back(value);
}
double nextTrigger(bool reverse,
const double currentSample,
double* pTarget) override {
Q_UNUSED(reverse);
Q_UNUSED(currentSample);
Q_UNUSED(pTarget);
RELEASE_ASSERT(!m_targetReturnValues.isEmpty());
*pTarget = m_targetReturnValues.takeFirst();
RELEASE_ASSERT(!m_triggerReturnValues.isEmpty());
return m_triggerReturnValues.takeFirst();
}
// hintReader has no effect in this stubbed class
void hintReader(HintVector* pHintList) override {
Q_UNUSED(pHintList);
}
void notifySeek(double dNewPlaypos) override {
Q_UNUSED(dNewPlaypos);
}
void trackLoaded(TrackPointer pTrack) override {
Q_UNUSED(pTrack);
}
protected:
QList<double> m_triggerReturnValues;
QList<double> m_targetReturnValues;
};
class ReadAheadManagerTest : public MixxxTest {
public:
ReadAheadManagerTest()
: m_beatClosestCO(ConfigKey(kGroup, "beat_closest")),
m_beatNextCO(ConfigKey(kGroup, "beat_next")),
m_beatPrevCO(ConfigKey(kGroup, "beat_prev")),
m_playCO(ConfigKey(kGroup, "play")),
m_quantizeCO(ConfigKey(kGroup, "quantize")),
m_slipEnabledCO(ConfigKey(kGroup, "slip_enabled")),
m_trackSamplesCO(ConfigKey(kGroup, "track_samples")),
m_pBuffer(SampleUtil::alloc(MAX_BUFFER_LEN)) {
}
protected:
void SetUp() override {
SampleUtil::clear(m_pBuffer, MAX_BUFFER_LEN);
m_pReader.reset(new StubReader());
m_pLoopControl.reset(new StubLoopControl());
m_pReadAheadManager.reset(new ReadAheadManager(m_pReader.data(),
m_pLoopControl.data()));
}
QScopedPointer<StubReader> m_pReader;
QScopedPointer<StubLoopControl> m_pLoopControl;
QScopedPointer<ReadAheadManager> m_pReadAheadManager;
ControlObject m_beatClosestCO;
ControlObject m_beatNextCO;
ControlObject m_beatPrevCO;
ControlObject m_playCO;
ControlObject m_quantizeCO;
ControlObject m_slipEnabledCO;
ControlObject m_trackSamplesCO;
CSAMPLE* m_pBuffer;
};
TEST_F(ReadAheadManagerTest, FractionalFrameLoop) {
// If we are in reverse, a loop is enabled, and the current playposition
// is before of the loop, we should seek to the out point of the loop.
m_pReadAheadManager->notifySeek(0.5);
// Trigger value means, the sample that triggers the loop (loop in)
m_pLoopControl->pushTriggerReturnValue(20.2);
m_pLoopControl->pushTriggerReturnValue(20.2);
m_pLoopControl->pushTriggerReturnValue(20.2);
m_pLoopControl->pushTriggerReturnValue(20.2);
m_pLoopControl->pushTriggerReturnValue(20.2);
m_pLoopControl->pushTriggerReturnValue(20.2);
// Process value is the sample we should seek to.
m_pLoopControl->pushTargetReturnValue(3.3);
m_pLoopControl->pushTargetReturnValue(3.3);
m_pLoopControl->pushTargetReturnValue(3.3);
m_pLoopControl->pushTargetReturnValue(3.3);
m_pLoopControl->pushTargetReturnValue(3.3);
m_pLoopControl->pushTargetReturnValue(kNoTrigger);
// read from start to loop trigger, overshoot 0.3
EXPECT_EQ(20, m_pReadAheadManager->getNextSamples(1.0, m_pBuffer, 100));
// read loop
EXPECT_EQ(18, m_pReadAheadManager->getNextSamples(1.0, m_pBuffer, 80));
// read loop
EXPECT_EQ(16, m_pReadAheadManager->getNextSamples(1.0, m_pBuffer, 62));
// read loop
EXPECT_EQ(18, m_pReadAheadManager->getNextSamples(1.0, m_pBuffer, 46));
// read loop
EXPECT_EQ(16, m_pReadAheadManager->getNextSamples(1.0, m_pBuffer, 28));
// read loop
EXPECT_EQ(12, m_pReadAheadManager->getNextSamples(1.0, m_pBuffer, 12));
// start 0.5 to 20.2 = 19.7
// loop 3.3 to 20.2 = 16.9
// 100 - 19,7 - 4 * 16,9 = 12,7
// 12.7 + 3.3 = 16
// The rounding error must not exceed a half frame (one samples in stereo)
EXPECT_NEAR(16, m_pReadAheadManager->getPlaypos(), 1);
}
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