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#include <replaygain.h>
#include <QtDebug>
#include "analyzer/analyzergain.h"
#include "track/track.h"
#include "util/math.h"
#include "util/sample.h"
#include "util/timer.h"
AnalyzerGain::AnalyzerGain(UserSettingsPointer pConfig)
: m_rgSettings(pConfig),
m_pLeftTempBuffer(nullptr),
m_pRightTempBuffer(nullptr),
m_iBufferSize(0) {
m_pReplayGain = new ReplayGain();
}
AnalyzerGain::~AnalyzerGain() {
delete[] m_pLeftTempBuffer;
delete[] m_pRightTempBuffer;
delete m_pReplayGain;
}
bool AnalyzerGain::initialize(TrackPointer tio,
mixxx::audio::SampleRate sampleRate,
int totalSamples) {
if (m_rgSettings.isAnalyzerDisabled(1, tio) || totalSamples == 0) {
qDebug() << "Skipping AnalyzerGain";
return false;
}
return m_pReplayGain->initialise(static_cast<long>(sampleRate), 2);
}
void AnalyzerGain::cleanup() {
}
bool AnalyzerGain::processSamples(const CSAMPLE *pIn, const int iLen) {
ScopedTimer t("AnalyzerGain::process()");
int halfLength = static_cast<int>(iLen / 2);
if (halfLength > m_iBufferSize) {
delete[] m_pLeftTempBuffer;
delete[] m_pRightTempBuffer;
m_pLeftTempBuffer = new CSAMPLE[halfLength];
m_pRightTempBuffer = new CSAMPLE[halfLength];
}
SampleUtil::deinterleaveBuffer(m_pLeftTempBuffer, m_pRightTempBuffer, pIn, halfLength);
SampleUtil::applyGain(m_pLeftTempBuffer, 32767, halfLength);
SampleUtil::applyGain(m_pRightTempBuffer, 32767, halfLength);
return m_pReplayGain->process(m_pLeftTempBuffer, m_pRightTempBuffer, halfLength);
}
void AnalyzerGain::storeResults(TrackPointer tio) {
//TODO: We are going to store values as relative peaks so that "0" means that no replaygain has been evaluated.
// This means that we are going to transform from dB to peaks and viceversa.
// One may think to digg into replay_gain code and modify it so that
// it directly sends results as relative peaks.
// In that way there is no need to spend resources in calculating log10 or pow.
float fReplayGainOutput = m_pReplayGain->end();
if (fReplayGainOutput == GAIN_NOT_ENOUGH_SAMPLES) {
qWarning() << "ReplayGain 1.0 analysis failed";
return;
}
mixxx::ReplayGain replayGain(tio->getReplayGain());
replayGain.setRatio(db2ratio(fReplayGainOutput));
tio->setReplayGain(replayGain);
qDebug() << "ReplayGain 1.0 result is" << fReplayGainOutput << "dB for" << tio->getLocation();
}
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