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#include "mixer/samplerbank.h"
#include <QFileDialog>
#include <QMessageBox>
#include <QStandardPaths>
#include "control/controlpushbutton.h"
#include "mixer/playermanager.h"
#include "mixer/sampler.h"
#include "moc_samplerbank.cpp"
#include "track/track.h"
#include "util/assert.h"
#include "util/file.h"
namespace {
const ConfigKey kConfigkeyLastImportExportDirectory(
"[Samplers]", "last_import_export_directory");
// This is used in multiple tr() calls below which accepts const char* as a key.
// lupdate finds the single string here.
const char kSamplerFileType[] = QT_TRANSLATE_NOOP("SamplerBank", "Mixxx Sampler Banks (*.xml)");
} // anonymous namespace
SamplerBank::SamplerBank(UserSettingsPointer pConfig,
PlayerManager* pPlayerManager)
: QObject(pPlayerManager),
m_pConfig(pConfig),
m_pPlayerManager(pPlayerManager) {
DEBUG_ASSERT(m_pPlayerManager);
m_pCOLoadBank = std::make_unique<ControlPushButton>(ConfigKey("[Sampler]", "LoadSamplerBank"), this);
connect(m_pCOLoadBank.get(),
&ControlObject::valueChanged,
this,
&SamplerBank::slotLoadSamplerBank);
m_pCOSaveBank = std::make_unique<ControlPushButton>(ConfigKey("[Sampler]", "SaveSamplerBank"), this);
connect(m_pCOSaveBank.get(),
&ControlObject::valueChanged,
this,
&SamplerBank::slotSaveSamplerBank);
m_pCONumSamplers = new ControlProxy(ConfigKey("[Master]", "num_samplers"), this);
}
SamplerBank::~SamplerBank() {
}
void SamplerBank::slotSaveSamplerBank(double v) {
if (v <= 0.0) {
return;
}
QString lastImportExportDirectory = m_pConfig->getValue(
kConfigkeyLastImportExportDirectory,
// When Mixxx exits samplers are auto-exported to the config directory.
// Let's choose a different location to avoid confusion.
QStandardPaths::writableLocation(QStandardPaths::MusicLocation));
// Open a dialog to let the user choose the file location for crate export.
// The location is set to the last used directory for import/export and the file
// name to the playlist name.
const QString samplerBankPath = getFilePathWithVerifiedExtensionFromFileDialog(
tr("Save Sampler Bank"),
lastImportExportDirectory.append("/").append("samplers").append(".xml"),
tr(kSamplerFileType),
tr(kSamplerFileType));
// Exit method if user cancelled the open dialog.
if (samplerBankPath.isEmpty()) {
return;
}
// Update the import/export directory
QString fileDirectory(samplerBankPath);
fileDirectory.truncate(samplerBankPath.lastIndexOf(QDir::separator()));
m_pConfig->set(kConfigkeyLastImportExportDirectory,
ConfigValue(fileDirectory));
if (!saveSamplerBankToPath(samplerBankPath)) {
QMessageBox::warning(nullptr,
tr("Error Saving Sampler Bank"),
tr("Could not write the sampler bank to '%1'.")
.arg(samplerBankPath));
}
}
bool SamplerBank::saveSamplerBankToPath(const QString& samplerBankPath) {
// The user has picked a new directory via a file dialog. This means the
// system sandboxer (if we are sandboxed) has granted us permission to this
// folder. We don't need access to this file on a regular basis so we do not
// register a security bookmark.
VERIFY_OR_DEBUG_ASSERT(m_pPlayerManager) {
qWarning() << "SamplerBank::saveSamplerBankToPath called with no PlayerManager";
return false;
}
QFile file(samplerBankPath);
if (!file.open(QIODevice::WriteOnly)) {
qWarning() << "Error saving sampler bank: Could not write to file"
<< samplerBankPath;
return false;
}
QDomDocument doc("SamplerBank");
QDomElement root = doc.createElement("samplerbank");
doc.appendChild(root);
for (unsigned int i = 0; i < m_pPlayerManager->numSamplers(); ++i) {
Sampler* pSampler = m_pPlayerManager->getSampler(i + 1);
if (!pSampler) {
continue;
}
QDomElement samplerNode = doc.createElement(QString("sampler"));
samplerNode.setAttribute("group", pSampler->getGroup());
TrackPointer pTrack = pSampler->getLoadedTrack();
if (pTrack) {
QString samplerLocation = pTrack->getLocation();
samplerNode.setAttribute("location", samplerLocation);
}
root.appendChild(samplerNode);
}
QString docStr = doc.toString();
file.write(docStr.toUtf8().constData());
file.close();
return true;
}
void SamplerBank::slotLoadSamplerBank(double v) {
if (v <= 0.0) {
return;
}
QString lastImportExportDirectory = m_pConfig->getValue(
kConfigkeyLastImportExportDirectory,
QStandardPaths::writableLocation(QStandardPaths::MusicLocation));
QString fileFilter(tr(kSamplerFileType));
QString samplerBankPath = QFileDialog::getOpenFileName(nullptr,
tr("Load Sampler Bank"),
lastImportExportDirectory,
fileFilter,
&fileFilter);
if (samplerBankPath.isEmpty()) {
return;
}
// Update the import/export directory
QString fileDirectory(samplerBankPath);
fileDirectory.truncate(samplerBankPath.lastIndexOf(QDir::separator()));
m_pConfig->set(kConfigkeyLastImportExportDirectory,
ConfigValue(fileDirectory));
if (!loadSamplerBankFromPath(samplerBankPath)) {
QMessageBox::warning(nullptr,
tr("Error Reading Sampler Bank"),
tr("Could not open the sampler bank file '%1'.")
.arg(samplerBankPath));
}
}
bool SamplerBank::loadSamplerBankFromPath(const QString& samplerBankPath) {
// The user has picked a new directory via a file dialog. This means the
// system sandboxer (if we are sandboxed) has granted us permission to this
// folder. We don't need access to this file on a regular basis so we do not
// register a security bookmark.
VERIFY_OR_DEBUG_ASSERT(m_pPlayerManager) {
qWarning() << "SamplerBank::loadSamplerBankFromPath called with no PlayerManager";
return false;
}
QFile file(samplerBankPath);
if (!file.open(QIODevice::ReadOnly)) {
qWarning() << "Could not read sampler bank file" << samplerBankPath;
return false;
}
QDomDocument doc;
if (!doc.setContent(file.readAll())) {
qWarning() << "Could not read sampler bank file" << samplerBankPath;
return false;
}
QDomElement root = doc.documentElement();
if (root.tagName() != "samplerbank") {
qWarning() << "Could not read sampler bank file" << samplerBankPath;
return false;
}
QDomNode n = root.firstChild();
while (!n.isNull()) {
QDomElement e = n.toElement();
if (!e.isNull()) {
if (e.tagName() == "sampler") {
QString group = e.attribute("group", "");
QString location = e.attribute("location", "");
int samplerNum;
if (!group.isEmpty()
&& m_pPlayerManager->isSamplerGroup(group, &samplerNum)) {
if (m_pPlayerManager->numSamplers() < (unsigned) samplerNum) {
m_pCONumSamplers->set(samplerNum);
}
if (location.isEmpty()) {
m_pPlayerManager->slotLoadTrackToPlayer(TrackPointer(), group);
} else {
m_pPlayerManager->slotLoadToPlayer(location, group);
}
}
}
}
n = n.nextSibling();
}
file.close();
return true;
}
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