trunk/src/qsamplerChannelForm.cpp

#include "qsamplerChannelForm.h"

#include "qsamplerAbout.h"
#include "qsamplerDeviceForm.h"

#include "qsamplerMainForm.h"
#include "qsamplerInstrument.h"

#include <qvalidator.h>
#include <qmessagebox.h>
#include <qfiledialog.h>
#include <qfileinfo.h>

namespace QSampler {

ChannelForm::ChannelForm(QWidget* parent) : QDialog(parent) {
    ui.setupUi(this);

        // Initialize locals.
        m_pChannel = NULL;

        m_iDirtySetup = 0;
        m_iDirtyCount = 0;

        m_midiDevices.setAutoDelete(true);
        m_audioDevices.setAutoDelete(true);

        m_pDeviceForm = NULL;

        // Try to restore normal window positioning.
        adjustSize();
}

ChannelForm::~ChannelForm() {
        if (m_pDeviceForm)
                delete m_pDeviceForm;
        m_pDeviceForm = NULL;
}


// Channel dialog setup formal initializer.
void ChannelForm::setup ( qsamplerChannel *pChannel )
{
        m_pChannel = pChannel;

        m_iDirtySetup = 0;
        m_iDirtyCount = 0;

        if (m_pChannel == NULL)
                return;

        // It can be a brand new channel, remember?
        bool bNew = (m_pChannel->channelID() < 0);
        setCaption(QSAMPLER_TITLE ": " + m_pChannel->channelName());

        // Check if we're up and connected.
        MainForm *pMainForm = MainForm::getInstance();
        if (pMainForm == NULL)
                return;
        if (pMainForm->client() == NULL)
                return;

        qsamplerOptions *pOptions = pMainForm->options();
        if (pOptions == NULL)
                return;

        // Avoid nested changes.
        m_iDirtySetup++;

        // Load combo box history...
        pOptions->loadComboBoxHistory(ui.InstrumentFileComboBox);

        // Notify.that we've just changed one audio route.
        QObject::connect(ui.AudioRoutingTable, SIGNAL(valueChanged(int,int)),
                this, SLOT(changeAudioRouting(int,int)));

        // Populate Engines list.
        const char **ppszEngines = ::lscp_list_available_engines(pMainForm->client());
        if (ppszEngines) {
                ui.EngineNameComboBox->clear();
                for (int iEngine = 0; ppszEngines[iEngine]; iEngine++)
                        ui.EngineNameComboBox->insertItem(ppszEngines[iEngine]);
        }
        else m_pChannel->appendMessagesClient("lscp_list_available_engines");

        // Populate Audio output type list.
        ui.AudioDriverComboBox->clear();
        ui.AudioDriverComboBox->insertStringList(
                qsamplerDevice::getDrivers(pMainForm->client(), qsamplerDevice::Audio));

        // Populate MIDI input type list.
        ui.MidiDriverComboBox->clear();
        ui.MidiDriverComboBox->insertStringList(
                qsamplerDevice::getDrivers(pMainForm->client(), qsamplerDevice::Midi));

        // Populate Maps list.
        ui.MidiMapComboBox->clear();
        ui.MidiMapComboBox->insertStringList(qsamplerInstrument::getMapNames());

        // Read proper channel information,
        // and populate the channel form fields.

        // Engine name...
        QString sEngineName = pChannel->engineName();
        if (sEngineName.isEmpty() || bNew)
                sEngineName = pOptions->sEngineName;
        if (sEngineName.isEmpty())
                sEngineName = qsamplerChannel::noEngineName();
        if (ui.EngineNameComboBox->findText(sEngineName,
                        Qt::MatchExactly | Qt::MatchCaseSensitive) == 0) {
                ui.EngineNameComboBox->insertItem(sEngineName);
        }
        ui.EngineNameComboBox->setCurrentText(sEngineName);
        // Instrument filename and index...
        QString sInstrumentFile = pChannel->instrumentFile();
        if (sInstrumentFile.isEmpty())
                sInstrumentFile = qsamplerChannel::noInstrumentName();
        ui.InstrumentFileComboBox->setCurrentText(sInstrumentFile);
        ui.InstrumentNrComboBox->clear();
        ui.InstrumentNrComboBox->insertStringList(
                qsamplerChannel::getInstrumentList(sInstrumentFile,
                pOptions->bInstrumentNames));
        ui.InstrumentNrComboBox->setCurrentItem(pChannel->instrumentNr());

        // MIDI input device...
        qsamplerDevice midiDevice(qsamplerDevice::Midi, m_pChannel->midiDevice());
        // MIDI input driver...
        QString sMidiDriver = midiDevice.driverName();
        if (sMidiDriver.isEmpty() || bNew)
                sMidiDriver = pOptions->sMidiDriver.upper();
        if (!sMidiDriver.isEmpty()) {
                if (ui.MidiDriverComboBox->findText(sMidiDriver,
                                Qt::MatchExactly | Qt::MatchCaseSensitive) == 0) {
                        ui.MidiDriverComboBox->insertItem(sMidiDriver);
                }
                ui.MidiDriverComboBox->setCurrentText(sMidiDriver);
        }
        selectMidiDriverItem(sMidiDriver);
        if (!bNew)
                ui.MidiDeviceComboBox->setCurrentText(midiDevice.deviceName());
        selectMidiDeviceItem(ui.MidiDeviceComboBox->currentItem());
        // MIDI input port...
        ui.MidiPortSpinBox->setValue(pChannel->midiPort());
        // MIDI input channel...
        int iMidiChannel = pChannel->midiChannel();
        // When new, try to suggest a sensible MIDI channel...
        if (iMidiChannel < 0)
                iMidiChannel = (::lscp_get_channels(pMainForm->client()) % 16);
        ui.MidiChannelComboBox->setCurrentItem(iMidiChannel);
        // MIDI instrument map...
        int iMidiMap = (bNew ? pOptions->iMidiMap : pChannel->midiMap());
        // When new, try to suggest a sensible MIDI map...
        if (iMidiMap < 0)
                iMidiMap = 0;
        const QString& sMapName = qsamplerInstrument::getMapName(iMidiMap);
        if (!sMapName.isEmpty())
                ui.MidiMapComboBox->setCurrentText(sMapName);
        // It might be no maps around...
        bool bMidiMapEnabled = (ui.MidiMapComboBox->count() > 0);
        ui.MidiMapTextLabel->setEnabled(bMidiMapEnabled);
        ui.MidiMapComboBox->setEnabled(bMidiMapEnabled);

        // Audio output device...
        qsamplerDevice audioDevice(qsamplerDevice::Audio, m_pChannel->audioDevice());
        // Audio output driver...
        QString sAudioDriver = audioDevice.driverName();
        if (sAudioDriver.isEmpty() || bNew)
                sAudioDriver = pOptions->sAudioDriver.upper();
        if (!sAudioDriver.isEmpty()) {
                if (ui.AudioDriverComboBox->findText(sAudioDriver,
                                Qt::MatchExactly | Qt::MatchCaseSensitive) == 0) {
                        ui.AudioDriverComboBox->insertItem(sAudioDriver);
                }
                ui.AudioDriverComboBox->setCurrentText(sAudioDriver);
        }
        selectAudioDriverItem(sAudioDriver);
        if (!bNew)
                ui.AudioDeviceComboBox->setCurrentText(audioDevice.deviceName());
        selectAudioDeviceItem(ui.AudioDeviceComboBox->currentItem());

        // As convenient, make it ready on stabilizeForm() for
        // prompt acceptance, if we got the minimum required...
/*      if (sEngineName != qsamplerChannel::noEngineName() &&
                sInstrumentFile != qsamplerChannel::noInstrumentName())
                m_iDirtyCount++; */
        // Done.
        m_iDirtySetup--;
        stabilizeForm();
}


// Accept settings (OK button slot).
void ChannelForm::accept (void)
{
        if (m_pChannel == NULL)
                return;

        MainForm *pMainForm = MainForm::getInstance();
        if (pMainForm == NULL)
                return;
        if (pMainForm->client() == NULL)
                return;

        qsamplerOptions *pOptions = pMainForm->options();
        if (pOptions == NULL)
                return;

        // Flush any pending editing...
        //ui.AudioRoutingTable->flush();

        // We'll go for it!
        if (m_iDirtyCount > 0) {
                int iErrors = 0;
                // Are we a new channel?
                if (!m_pChannel->addChannel())
                        iErrors++;
                // Accept Audio driver or device selection...
                if (m_audioDevices.isEmpty()) {
                        if (!m_pChannel->setAudioDriver(ui.AudioDriverComboBox->currentText()))
                                iErrors++;
                } else {
                        qsamplerDevice *pDevice = m_audioDevices.at(ui.AudioDeviceComboBox->currentItem());
                        if (pDevice == NULL)
                                iErrors++;
                        else if (!m_pChannel->setAudioDevice(pDevice->deviceID()))
                                iErrors++;
                        else if (!m_audioRouting.isEmpty()) {
                                // Set the audio route changes...
                                qsamplerChannelRoutingMap::ConstIterator iter;
                                for (iter = m_audioRouting.begin();
                                                iter != m_audioRouting.end(); ++iter) {
                                        if (!m_pChannel->setAudioChannel(iter.key(), iter.data()))
                                                iErrors++;
                                }
                        }
                }
                // Accept MIDI driver or device selection...
                if (m_midiDevices.isEmpty()) {
                        if (!m_pChannel->setMidiDriver(ui.MidiDriverComboBox->currentText()))
                                iErrors++;
                } else {
                        qsamplerDevice *pDevice = m_midiDevices.at(ui.MidiDeviceComboBox->currentItem());
                        if (pDevice == NULL)
                                iErrors++;
                        else if (!m_pChannel->setMidiDevice(pDevice->deviceID()))
                                iErrors++;
                }
                // MIDI input port number...
                if (!m_pChannel->setMidiPort(ui.MidiPortSpinBox->value()))
                        iErrors++;
                // MIDI input channel...
                if (!m_pChannel->setMidiChannel(ui.MidiChannelComboBox->currentItem()))
                        iErrors++;
                // Engine name...
                if (!m_pChannel->loadEngine(ui.EngineNameComboBox->currentText()))
                        iErrors++;
                // Instrument file and index...
                const QString& sPath = ui.InstrumentFileComboBox->currentText();
                if (!sPath.isEmpty() && QFileInfo(sPath).exists()) {
                        if (!m_pChannel->loadInstrument(sPath, ui.InstrumentNrComboBox->currentItem()))
                                iErrors++;
                }
                // MIDI intrument map...
                if (!m_pChannel->setMidiMap(ui.MidiMapComboBox->currentItem()))
                        iErrors++;
                // Show error messages?
                if (iErrors > 0)
                        m_pChannel->appendMessagesError(tr("Some channel settings could not be set.\n\nSorry."));
        }

        // Save default engine name, instrument directory and history...
        pOptions->sInstrumentDir = QFileInfo(ui.InstrumentFileComboBox->currentText()).dirPath(true);
        pOptions->sEngineName  = ui.EngineNameComboBox->currentText();
        pOptions->sAudioDriver = ui.AudioDriverComboBox->currentText();
        pOptions->sMidiDriver  = ui.MidiDriverComboBox->currentText();
        pOptions->iMidiMap     = ui.MidiMapComboBox->currentItem();
        pOptions->saveComboBoxHistory(ui.InstrumentFileComboBox);

        // Just go with dialog acceptance.
        QDialog::accept();
}


// Reject settings (Cancel button slot).
void ChannelForm::reject (void)
{
        bool bReject = true;

        // Check if there's any pending changes...
        if (m_iDirtyCount > 0 && ui.OkPushButton->isEnabled()) {
                switch (QMessageBox::warning(this,
                        QSAMPLER_TITLE ": " + tr("Warning"),
                        tr("Some channel settings have been changed.\n\n"
                        "Do you want to apply the changes?"),
                        tr("Apply"), tr("Discard"), tr("Cancel"))) {
                case 0:     // Apply...
                        accept();
                        return;
                case 1:     // Discard
                        break;
                default:    // Cancel.
                        bReject = false;
                        break;
                }
        }

        if (bReject)
                QDialog::reject();
}


// Browse and open an instrument file.
void ChannelForm::openInstrumentFile (void)
{
        MainForm *pMainForm = MainForm::getInstance();
        if (pMainForm == NULL)
                return;
        if (pMainForm->client() == NULL)
                return;

        qsamplerOptions *pOptions = pMainForm->options();
        if (pOptions == NULL)
                return;

        // FIXME: the instrument file filters should be restricted,
        // depending on the current engine.
        QString sInstrumentFile = QFileDialog::getOpenFileName(
                pOptions->sInstrumentDir,                   // Start here.
                tr("Instrument files") + " (*.gig *.dls)",  // Filter (GIG and DLS files)
                this, 0,                                    // Parent and name (none)
                QSAMPLER_TITLE ": " + tr("Instrument files")    // Caption.
        );

        if (sInstrumentFile.isEmpty())
                return;

        ui.InstrumentFileComboBox->setCurrentText(sInstrumentFile);
        updateInstrumentName();
}


// Refresh the actual instrument name.
void ChannelForm::updateInstrumentName (void)
{
        MainForm *pMainForm = MainForm::getInstance();
        if (pMainForm == NULL)
                return;
        if (pMainForm->client() == NULL)
                return;

        qsamplerOptions *pOptions = pMainForm->options();
        if (pOptions == NULL)
                return;

        // Finally this better idea would be to use libgig
        // to retrieve the REAL instrument names.
        ui.InstrumentNrComboBox->clear();
        ui.InstrumentNrComboBox->insertStringList(
                qsamplerChannel::getInstrumentList(
                        ui.InstrumentFileComboBox->currentText(),
                        pOptions->bInstrumentNames)
        );

        optionsChanged();
}


// Show device options dialog.
void ChannelForm::setupDevice ( qsamplerDevice *pDevice,
        qsamplerDevice::qsamplerDeviceType deviceTypeMode,
        const QString& sDriverName )
{
        MainForm *pMainForm = MainForm::getInstance();
        if (pMainForm == NULL)
                return;
        if (pMainForm->client() == NULL)
                return;

        // Create the device form if not already...
        if (m_pDeviceForm == NULL) {
                m_pDeviceForm = new DeviceForm(this, Qt::Dialog);
        m_pDeviceForm->setAttribute(Qt::WA_ShowModal);
                QObject::connect(m_pDeviceForm, SIGNAL(devicesChanged()),
                        this, SLOT(updateDevices()));
        }

        // Refresh the device form with selected data.
        if (m_pDeviceForm) {
                m_pDeviceForm->setDeviceTypeMode(deviceTypeMode);
                m_pDeviceForm->refreshDevices();
                m_pDeviceForm->setDevice(pDevice);
                m_pDeviceForm->setDriverName(sDriverName);
                m_pDeviceForm->show();
        }
}


// Refresh MIDI driver item devices.
void ChannelForm::selectMidiDriverItem ( const QString& sMidiDriver )
{
        MainForm *pMainForm = MainForm::getInstance();
        if (pMainForm == NULL)
                return;
        if (pMainForm->client() == NULL)
                return;

        const QString sDriverName = sMidiDriver.upper();

        // Save current device id.
        int iDeviceID = 0;
        qsamplerDevice *pDevice = m_midiDevices.at(ui.MidiDeviceComboBox->currentItem());
        if (pDevice)
                iDeviceID = pDevice->deviceID();

        // Clean maplist.
        ui.MidiDeviceComboBox->clear();
        m_midiDevices.clear();

        // Populate with the current ones...
        const QPixmap midiPixmap(":/qsampler/pixmaps/midi2.png");
        int *piDeviceIDs = qsamplerDevice::getDevices(pMainForm->client(),
                qsamplerDevice::Midi);
        for (int i = 0; piDeviceIDs && piDeviceIDs[i] >= 0; i++) {
                pDevice = new qsamplerDevice(qsamplerDevice::Midi, piDeviceIDs[i]);
                if (pDevice->driverName().upper() == sDriverName) {
                        ui.MidiDeviceComboBox->insertItem(midiPixmap, pDevice->deviceName());
                        m_midiDevices.append(pDevice);
                } else {
                        delete pDevice;
                }
        }

        // Do proper enabling...
        bool bEnabled = !m_midiDevices.isEmpty();
        if (bEnabled) {
                // Select the previous current device...
                int iMidiItem = 0;
                for (pDevice = m_midiDevices.first();
                                pDevice;
                                        pDevice = m_midiDevices.next()) {
                        if (pDevice->deviceID() == iDeviceID) {
                                ui.MidiDeviceComboBox->setCurrentItem(iMidiItem);
                                selectMidiDeviceItem(iMidiItem);
                                break;
                        }
                        iMidiItem++;
                }
        } else {
                ui.MidiDeviceComboBox->insertItem(
                        tr("(New MIDI %1 device)").arg(sMidiDriver));
        }
        ui.MidiDeviceTextLabel->setEnabled(bEnabled);
        ui.MidiDeviceComboBox->setEnabled(bEnabled);
}


// Refresh MIDI device options slot.
void ChannelForm::selectMidiDriver ( const QString& sMidiDriver )
{
        if (m_iDirtySetup > 0)
                return;

        selectMidiDriverItem(sMidiDriver);
        optionsChanged();
}


// Select MIDI device item.
void ChannelForm::selectMidiDeviceItem ( int iMidiItem )
{
        qsamplerDevice *pDevice = m_midiDevices.at(iMidiItem);
        if (pDevice) {
                const qsamplerDeviceParamMap& params = pDevice->params();
                int iPorts = params["PORTS"].value.toInt();
                ui.MidiPortTextLabel->setEnabled(iPorts > 0);
                ui.MidiPortSpinBox->setEnabled(iPorts > 0);
                if (iPorts > 0)
                        ui.MidiPortSpinBox->setMaxValue(iPorts - 1);
        }
}


// Select MIDI device options slot.
void ChannelForm::selectMidiDevice ( int iMidiItem )
{
        if (m_iDirtySetup > 0)
                return;

        selectMidiDeviceItem(iMidiItem);
        optionsChanged();
}


// MIDI device options.
void ChannelForm::setupMidiDevice (void)
{
        setupDevice(m_midiDevices.at(ui.MidiDeviceComboBox->currentItem()),
                qsamplerDevice::Midi, ui.MidiDriverComboBox->currentText());
}


// Refresh Audio driver item devices.
void ChannelForm::selectAudioDriverItem ( const QString& sAudioDriver )
{
        MainForm *pMainForm = MainForm::getInstance();
        if (pMainForm == NULL)
                return;
        if (pMainForm->client() == NULL)
                return;

        const QString sDriverName = sAudioDriver.upper();

        // Save current device id.
        int iDeviceID = 0;
        qsamplerDevice *pDevice = m_audioDevices.at(ui.AudioDeviceComboBox->currentItem());
        if (pDevice)
                iDeviceID = pDevice->deviceID();

        // Clean maplist.
        ui.AudioDeviceComboBox->clear();
        m_audioDevices.clear();

        // Populate with the current ones...
        const QPixmap audioPixmap(":/qsampler/pixmaps/audio2.png");
        int *piDeviceIDs = qsamplerDevice::getDevices(pMainForm->client(),
                qsamplerDevice::Audio);
        for (int i = 0; piDeviceIDs && piDeviceIDs[i] >= 0; i++) {
                pDevice = new qsamplerDevice(qsamplerDevice::Audio, piDeviceIDs[i]);
                if (pDevice->driverName().upper() == sDriverName) {
                        ui.AudioDeviceComboBox->insertItem(audioPixmap, pDevice->deviceName());
                        m_audioDevices.append(pDevice);
                } else {
                        delete pDevice;
                }
        }

        // Do proper enabling...
        bool bEnabled = !m_audioDevices.isEmpty();
        if (bEnabled) {
                // Select the previous current device...
                int iAudioItem = 0;
                for (pDevice = m_audioDevices.first();
                                pDevice;
                                        pDevice = m_audioDevices.next()) {
                        if (pDevice->deviceID() == iDeviceID) {
                                ui.AudioDeviceComboBox->setCurrentItem(iAudioItem);
                                selectAudioDeviceItem(iAudioItem);
                                break;
                        }
                        iAudioItem++;
                }
        } else {
                ui.AudioDeviceComboBox->insertItem(
                        tr("(New Audio %1 device)").arg(sAudioDriver));
                //ui.AudioRoutingTable->setNumRows(0);
        }
        ui.AudioDeviceTextLabel->setEnabled(bEnabled);
        ui.AudioDeviceComboBox->setEnabled(bEnabled);
        ui.AudioRoutingTable->setEnabled(bEnabled);
}


// Refresh Audio device options slot.
void ChannelForm::selectAudioDriver ( const QString& sAudioDriver )
{
        if (m_iDirtySetup > 0)
                return;

        selectAudioDriverItem(sAudioDriver);
        optionsChanged();
}


// Select Audio device item.
void ChannelForm::selectAudioDeviceItem ( int iAudioItem )
{
        qsamplerDevice *pDevice = m_audioDevices.at(iAudioItem);
        if (pDevice) {
                // Refresh the audio routing table.
                routingModel.refresh(pDevice, m_pChannel->audioRouting());
                // Reset routing change map.
                m_audioRouting.clear();
        }
}


// Select Audio device options slot.
void ChannelForm::selectAudioDevice ( int iAudioItem )
{
        if (m_iDirtySetup > 0)
                return;

        selectAudioDeviceItem(iAudioItem);
        optionsChanged();
}


// Audio device options.
void ChannelForm::setupAudioDevice (void)
{
        setupDevice(m_audioDevices.at(ui.AudioDeviceComboBox->currentItem()),
                qsamplerDevice::Audio, ui.AudioDriverComboBox->currentText());
}


// Audio routing change slot.
void ChannelForm::changeAudioRouting ( int iRow, int iCol )
{
#if 0
        if (m_iDirtySetup > 0)
                return;
        if (iRow < 0 || iCol < 0)
                return;

        // Verify that this is a QComboTableItem (magic rtti == 1)
        QTableItem *pItem = ui.AudioRoutingTable->item(iRow, iCol);
        if (pItem == NULL)
                return;
        qsamplerChannelRoutingComboBox *pComboItem =
                static_cast<qsamplerChannelRoutingComboBox*> (pItem);
        // FIXME: Its not garanteed that we must have
        // iAudioOut == iRow on all times forth!
        m_audioRouting[iRow] = pComboItem->currentItem();

        // And let's get dirty...
        optionsChanged();
#endif
}


// UPdate all device lists slot.
void ChannelForm::updateDevices (void)
{
        if (m_iDirtySetup > 0)
                return;

        selectMidiDriverItem(ui.MidiDriverComboBox->currentText());
        selectAudioDriverItem(ui.AudioDriverComboBox->currentText());
        optionsChanged();
}


// Dirty up settings.
void ChannelForm::optionsChanged (void)
{
        if (m_iDirtySetup > 0)
                return;

        m_iDirtyCount++;
        stabilizeForm();
}


// Stabilize current form state.
void ChannelForm::stabilizeForm (void)
{
        bool bValid = true;
#if 0
        const QString& sPath = InstrumentFileComboBox->currentText();
        bValid = bValid && !sPath.isEmpty() && QFileInfo(sPath).exists();
#endif
        ui.OkPushButton->setEnabled(m_iDirtyCount > 0 && bValid);
}


} // namespace QSampler
1	schoenebeck	1461	#include "qsamplerChannelForm.h"
2
3			#include "qsamplerAbout.h"
4			#include "qsamplerDeviceForm.h"
5
6			#include "qsamplerMainForm.h"
7			#include "qsamplerInstrument.h"
8
9			#include <qvalidator.h>
10			#include <qmessagebox.h>
11			#include <qfiledialog.h>
12			#include <qfileinfo.h>
13
14			namespace QSampler {
15
16			ChannelForm::ChannelForm(QWidget* parent) : QDialog(parent) {
17			ui.setupUi(this);
18
19			// Initialize locals.
20			m_pChannel = NULL;
21
22			m_iDirtySetup = 0;
23			m_iDirtyCount = 0;
24
25			m_midiDevices.setAutoDelete(true);
26			m_audioDevices.setAutoDelete(true);
27
28			m_pDeviceForm = NULL;
29
30			// Try to restore normal window positioning.
31			adjustSize();
32			}
33
34			ChannelForm::~ChannelForm() {
35			if (m_pDeviceForm)
36			delete m_pDeviceForm;
37			m_pDeviceForm = NULL;
38			}
39
40
41			// Channel dialog setup formal initializer.
42			void ChannelForm::setup ( qsamplerChannel *pChannel )
43			{
44			m_pChannel = pChannel;
45
46			m_iDirtySetup = 0;
47			m_iDirtyCount = 0;
48
49			if (m_pChannel == NULL)
50			return;
51
52			// It can be a brand new channel, remember?
53			bool bNew = (m_pChannel->channelID() < 0);
54			setCaption(QSAMPLER_TITLE ": " + m_pChannel->channelName());
55
56			// Check if we're up and connected.
57			MainForm *pMainForm = MainForm::getInstance();
58			if (pMainForm == NULL)
59			return;
60			if (pMainForm->client() == NULL)
61			return;
62
63			qsamplerOptions *pOptions = pMainForm->options();
64			if (pOptions == NULL)
65			return;
66
67			// Avoid nested changes.
68			m_iDirtySetup++;
69
70			// Load combo box history...
71			pOptions->loadComboBoxHistory(ui.InstrumentFileComboBox);
72
73			// Notify.that we've just changed one audio route.
74			QObject::connect(ui.AudioRoutingTable, SIGNAL(valueChanged(int,int)),
75			this, SLOT(changeAudioRouting(int,int)));
76
77			// Populate Engines list.
78			const char **ppszEngines = ::lscp_list_available_engines(pMainForm->client());
79			if (ppszEngines) {
80			ui.EngineNameComboBox->clear();
81			for (int iEngine = 0; ppszEngines[iEngine]; iEngine++)
82			ui.EngineNameComboBox->insertItem(ppszEngines[iEngine]);
83			}
84			else m_pChannel->appendMessagesClient("lscp_list_available_engines");
85
86			// Populate Audio output type list.
87			ui.AudioDriverComboBox->clear();
88			ui.AudioDriverComboBox->insertStringList(
89			qsamplerDevice::getDrivers(pMainForm->client(), qsamplerDevice::Audio));
90
91			// Populate MIDI input type list.
92			ui.MidiDriverComboBox->clear();
93			ui.MidiDriverComboBox->insertStringList(
94			qsamplerDevice::getDrivers(pMainForm->client(), qsamplerDevice::Midi));
95
96			// Populate Maps list.
97			ui.MidiMapComboBox->clear();
98			ui.MidiMapComboBox->insertStringList(qsamplerInstrument::getMapNames());
99
100			// Read proper channel information,
101			// and populate the channel form fields.
102
103			// Engine name...
104			QString sEngineName = pChannel->engineName();
105			if (sEngineName.isEmpty() \|\| bNew)
106			sEngineName = pOptions->sEngineName;
107			if (sEngineName.isEmpty())
108			sEngineName = qsamplerChannel::noEngineName();
109			if (ui.EngineNameComboBox->findText(sEngineName,
110			Qt::MatchExactly \| Qt::MatchCaseSensitive) == 0) {
111			ui.EngineNameComboBox->insertItem(sEngineName);
112			}
113			ui.EngineNameComboBox->setCurrentText(sEngineName);
114			// Instrument filename and index...
115			QString sInstrumentFile = pChannel->instrumentFile();
116			if (sInstrumentFile.isEmpty())
117			sInstrumentFile = qsamplerChannel::noInstrumentName();
118			ui.InstrumentFileComboBox->setCurrentText(sInstrumentFile);
119			ui.InstrumentNrComboBox->clear();
120			ui.InstrumentNrComboBox->insertStringList(
121			qsamplerChannel::getInstrumentList(sInstrumentFile,
122			pOptions->bInstrumentNames));
123			ui.InstrumentNrComboBox->setCurrentItem(pChannel->instrumentNr());
124
125			// MIDI input device...
126			qsamplerDevice midiDevice(qsamplerDevice::Midi, m_pChannel->midiDevice());
127			// MIDI input driver...
128			QString sMidiDriver = midiDevice.driverName();
129			if (sMidiDriver.isEmpty() \|\| bNew)
130			sMidiDriver = pOptions->sMidiDriver.upper();
131			if (!sMidiDriver.isEmpty()) {
132			if (ui.MidiDriverComboBox->findText(sMidiDriver,
133			Qt::MatchExactly \| Qt::MatchCaseSensitive) == 0) {
134			ui.MidiDriverComboBox->insertItem(sMidiDriver);
135			}
136			ui.MidiDriverComboBox->setCurrentText(sMidiDriver);
137			}
138			selectMidiDriverItem(sMidiDriver);
139			if (!bNew)
140			ui.MidiDeviceComboBox->setCurrentText(midiDevice.deviceName());
141			selectMidiDeviceItem(ui.MidiDeviceComboBox->currentItem());
142			// MIDI input port...
143			ui.MidiPortSpinBox->setValue(pChannel->midiPort());
144			// MIDI input channel...
145			int iMidiChannel = pChannel->midiChannel();
146			// When new, try to suggest a sensible MIDI channel...
147			if (iMidiChannel < 0)
148			iMidiChannel = (::lscp_get_channels(pMainForm->client()) % 16);
149			ui.MidiChannelComboBox->setCurrentItem(iMidiChannel);
150			// MIDI instrument map...
151			int iMidiMap = (bNew ? pOptions->iMidiMap : pChannel->midiMap());
152			// When new, try to suggest a sensible MIDI map...
153			if (iMidiMap < 0)
154			iMidiMap = 0;
155			const QString& sMapName = qsamplerInstrument::getMapName(iMidiMap);
156			if (!sMapName.isEmpty())
157			ui.MidiMapComboBox->setCurrentText(sMapName);
158			// It might be no maps around...
159			bool bMidiMapEnabled = (ui.MidiMapComboBox->count() > 0);
160			ui.MidiMapTextLabel->setEnabled(bMidiMapEnabled);
161			ui.MidiMapComboBox->setEnabled(bMidiMapEnabled);
162
163			// Audio output device...
164			qsamplerDevice audioDevice(qsamplerDevice::Audio, m_pChannel->audioDevice());
165			// Audio output driver...
166			QString sAudioDriver = audioDevice.driverName();
167			if (sAudioDriver.isEmpty() \|\| bNew)
168			sAudioDriver = pOptions->sAudioDriver.upper();
169			if (!sAudioDriver.isEmpty()) {
170			if (ui.AudioDriverComboBox->findText(sAudioDriver,
171			Qt::MatchExactly \| Qt::MatchCaseSensitive) == 0) {
172			ui.AudioDriverComboBox->insertItem(sAudioDriver);
173			}
174			ui.AudioDriverComboBox->setCurrentText(sAudioDriver);
175			}
176			selectAudioDriverItem(sAudioDriver);
177			if (!bNew)
178			ui.AudioDeviceComboBox->setCurrentText(audioDevice.deviceName());
179			selectAudioDeviceItem(ui.AudioDeviceComboBox->currentItem());
180
181			// As convenient, make it ready on stabilizeForm() for
182			// prompt acceptance, if we got the minimum required...
183			/* if (sEngineName != qsamplerChannel::noEngineName() &&
184			sInstrumentFile != qsamplerChannel::noInstrumentName())
185			m_iDirtyCount++; */
186			// Done.
187			m_iDirtySetup--;
188			stabilizeForm();
189			}
190
191
192			// Accept settings (OK button slot).
193			void ChannelForm::accept (void)
194			{
195			if (m_pChannel == NULL)
196			return;
197
198			MainForm *pMainForm = MainForm::getInstance();
199			if (pMainForm == NULL)
200			return;
201			if (pMainForm->client() == NULL)
202			return;
203
204			qsamplerOptions *pOptions = pMainForm->options();
205			if (pOptions == NULL)
206			return;
207
208			// Flush any pending editing...
209			//ui.AudioRoutingTable->flush();
210
211			// We'll go for it!
212			if (m_iDirtyCount > 0) {
213			int iErrors = 0;
214			// Are we a new channel?
215			if (!m_pChannel->addChannel())
216			iErrors++;
217			// Accept Audio driver or device selection...
218			if (m_audioDevices.isEmpty()) {
219			if (!m_pChannel->setAudioDriver(ui.AudioDriverComboBox->currentText()))
220			iErrors++;
221			} else {
222			qsamplerDevice *pDevice = m_audioDevices.at(ui.AudioDeviceComboBox->currentItem());
223			if (pDevice == NULL)
224			iErrors++;
225			else if (!m_pChannel->setAudioDevice(pDevice->deviceID()))
226			iErrors++;
227			else if (!m_audioRouting.isEmpty()) {
228			// Set the audio route changes...
229			qsamplerChannelRoutingMap::ConstIterator iter;
230			for (iter = m_audioRouting.begin();
231			iter != m_audioRouting.end(); ++iter) {
232			if (!m_pChannel->setAudioChannel(iter.key(), iter.data()))
233			iErrors++;
234			}
235			}
236			}
237			// Accept MIDI driver or device selection...
238			if (m_midiDevices.isEmpty()) {
239			if (!m_pChannel->setMidiDriver(ui.MidiDriverComboBox->currentText()))
240			iErrors++;
241			} else {
242			qsamplerDevice *pDevice = m_midiDevices.at(ui.MidiDeviceComboBox->currentItem());
243			if (pDevice == NULL)
244			iErrors++;
245			else if (!m_pChannel->setMidiDevice(pDevice->deviceID()))
246			iErrors++;
247			}
248			// MIDI input port number...
249			if (!m_pChannel->setMidiPort(ui.MidiPortSpinBox->value()))
250			iErrors++;
251			// MIDI input channel...
252			if (!m_pChannel->setMidiChannel(ui.MidiChannelComboBox->currentItem()))
253			iErrors++;
254			// Engine name...
255			if (!m_pChannel->loadEngine(ui.EngineNameComboBox->currentText()))
256			iErrors++;
257			// Instrument file and index...
258			const QString& sPath = ui.InstrumentFileComboBox->currentText();
259			if (!sPath.isEmpty() && QFileInfo(sPath).exists()) {
260			if (!m_pChannel->loadInstrument(sPath, ui.InstrumentNrComboBox->currentItem()))
261			iErrors++;
262			}
263			// MIDI intrument map...
264			if (!m_pChannel->setMidiMap(ui.MidiMapComboBox->currentItem()))
265			iErrors++;
266			// Show error messages?
267			if (iErrors > 0)
268			m_pChannel->appendMessagesError(tr("Some channel settings could not be set.\n\nSorry."));
269			}
270
271			// Save default engine name, instrument directory and history...
272			pOptions->sInstrumentDir = QFileInfo(ui.InstrumentFileComboBox->currentText()).dirPath(true);
273			pOptions->sEngineName = ui.EngineNameComboBox->currentText();
274			pOptions->sAudioDriver = ui.AudioDriverComboBox->currentText();
275			pOptions->sMidiDriver = ui.MidiDriverComboBox->currentText();
276			pOptions->iMidiMap = ui.MidiMapComboBox->currentItem();
277			pOptions->saveComboBoxHistory(ui.InstrumentFileComboBox);
278
279			// Just go with dialog acceptance.
280			QDialog::accept();
281			}
282
283
284			// Reject settings (Cancel button slot).
285			void ChannelForm::reject (void)
286			{
287			bool bReject = true;
288
289			// Check if there's any pending changes...
290			if (m_iDirtyCount > 0 && ui.OkPushButton->isEnabled()) {
291			switch (QMessageBox::warning(this,
292			QSAMPLER_TITLE ": " + tr("Warning"),
293			tr("Some channel settings have been changed.\n\n"
294			"Do you want to apply the changes?"),
295			tr("Apply"), tr("Discard"), tr("Cancel"))) {
296			case 0: // Apply...
297			accept();
298			return;
299			case 1: // Discard
300			break;
301			default: // Cancel.
302			bReject = false;
303			break;
304			}
305			}
306
307			if (bReject)
308			QDialog::reject();
309			}
310
311
312			// Browse and open an instrument file.
313			void ChannelForm::openInstrumentFile (void)
314			{
315			MainForm *pMainForm = MainForm::getInstance();
316			if (pMainForm == NULL)
317			return;
318			if (pMainForm->client() == NULL)
319			return;
320
321			qsamplerOptions *pOptions = pMainForm->options();
322			if (pOptions == NULL)
323			return;
324
325			// FIXME: the instrument file filters should be restricted,
326			// depending on the current engine.
327			QString sInstrumentFile = QFileDialog::getOpenFileName(
328			pOptions->sInstrumentDir, // Start here.
329			tr("Instrument files") + " (.gig .dls)", // Filter (GIG and DLS files)
330			this, 0, // Parent and name (none)
331			QSAMPLER_TITLE ": " + tr("Instrument files") // Caption.
332			);
333
334			if (sInstrumentFile.isEmpty())
335			return;
336
337			ui.InstrumentFileComboBox->setCurrentText(sInstrumentFile);
338			updateInstrumentName();
339			}
340
341
342			// Refresh the actual instrument name.
343			void ChannelForm::updateInstrumentName (void)
344			{
345			MainForm *pMainForm = MainForm::getInstance();
346			if (pMainForm == NULL)
347			return;
348			if (pMainForm->client() == NULL)
349			return;
350
351			qsamplerOptions *pOptions = pMainForm->options();
352			if (pOptions == NULL)
353			return;
354
355			// Finally this better idea would be to use libgig
356			// to retrieve the REAL instrument names.
357			ui.InstrumentNrComboBox->clear();
358			ui.InstrumentNrComboBox->insertStringList(
359			qsamplerChannel::getInstrumentList(
360			ui.InstrumentFileComboBox->currentText(),
361			pOptions->bInstrumentNames)
362			);
363
364			optionsChanged();
365			}
366
367
368			// Show device options dialog.
369			void ChannelForm::setupDevice ( qsamplerDevice *pDevice,
370			qsamplerDevice::qsamplerDeviceType deviceTypeMode,
371			const QString& sDriverName )
372			{
373			MainForm *pMainForm = MainForm::getInstance();
374			if (pMainForm == NULL)
375			return;
376			if (pMainForm->client() == NULL)
377			return;
378
379			// Create the device form if not already...
380			if (m_pDeviceForm == NULL) {
381			m_pDeviceForm = new DeviceForm(this, Qt::Dialog);
382			m_pDeviceForm->setAttribute(Qt::WA_ShowModal);
383			QObject::connect(m_pDeviceForm, SIGNAL(devicesChanged()),
384			this, SLOT(updateDevices()));
385			}
386
387			// Refresh the device form with selected data.
388			if (m_pDeviceForm) {
389			m_pDeviceForm->setDeviceTypeMode(deviceTypeMode);
390			m_pDeviceForm->refreshDevices();
391			m_pDeviceForm->setDevice(pDevice);
392			m_pDeviceForm->setDriverName(sDriverName);
393			m_pDeviceForm->show();
394			}
395			}
396
397
398			// Refresh MIDI driver item devices.
399			void ChannelForm::selectMidiDriverItem ( const QString& sMidiDriver )
400			{
401			MainForm *pMainForm = MainForm::getInstance();
402			if (pMainForm == NULL)
403			return;
404			if (pMainForm->client() == NULL)
405			return;
406
407			const QString sDriverName = sMidiDriver.upper();
408
409			// Save current device id.
410			int iDeviceID = 0;
411			qsamplerDevice *pDevice = m_midiDevices.at(ui.MidiDeviceComboBox->currentItem());
412			if (pDevice)
413			iDeviceID = pDevice->deviceID();
414
415			// Clean maplist.
416			ui.MidiDeviceComboBox->clear();
417			m_midiDevices.clear();
418
419			// Populate with the current ones...
420			const QPixmap midiPixmap(":/qsampler/pixmaps/midi2.png");
421			int *piDeviceIDs = qsamplerDevice::getDevices(pMainForm->client(),
422			qsamplerDevice::Midi);
423			for (int i = 0; piDeviceIDs && piDeviceIDs[i] >= 0; i++) {
424			pDevice = new qsamplerDevice(qsamplerDevice::Midi, piDeviceIDs[i]);
425			if (pDevice->driverName().upper() == sDriverName) {
426			ui.MidiDeviceComboBox->insertItem(midiPixmap, pDevice->deviceName());
427			m_midiDevices.append(pDevice);
428			} else {
429			delete pDevice;
430			}
431			}
432
433			// Do proper enabling...
434			bool bEnabled = !m_midiDevices.isEmpty();
435			if (bEnabled) {
436			// Select the previous current device...
437			int iMidiItem = 0;
438			for (pDevice = m_midiDevices.first();
439			pDevice;
440			pDevice = m_midiDevices.next()) {
441			if (pDevice->deviceID() == iDeviceID) {
442			ui.MidiDeviceComboBox->setCurrentItem(iMidiItem);
443			selectMidiDeviceItem(iMidiItem);
444			break;
445			}
446			iMidiItem++;
447			}
448			} else {
449			ui.MidiDeviceComboBox->insertItem(
450			tr("(New MIDI %1 device)").arg(sMidiDriver));
451			}
452			ui.MidiDeviceTextLabel->setEnabled(bEnabled);
453			ui.MidiDeviceComboBox->setEnabled(bEnabled);
454			}
455
456
457			// Refresh MIDI device options slot.
458			void ChannelForm::selectMidiDriver ( const QString& sMidiDriver )
459			{
460			if (m_iDirtySetup > 0)
461			return;
462
463			selectMidiDriverItem(sMidiDriver);
464			optionsChanged();
465			}
466
467
468			// Select MIDI device item.
469			void ChannelForm::selectMidiDeviceItem ( int iMidiItem )
470			{
471			qsamplerDevice *pDevice = m_midiDevices.at(iMidiItem);
472			if (pDevice) {
473			const qsamplerDeviceParamMap& params = pDevice->params();
474			int iPorts = params["PORTS"].value.toInt();
475			ui.MidiPortTextLabel->setEnabled(iPorts > 0);
476			ui.MidiPortSpinBox->setEnabled(iPorts > 0);
477			if (iPorts > 0)
478			ui.MidiPortSpinBox->setMaxValue(iPorts - 1);
479			}
480			}
481
482
483			// Select MIDI device options slot.
484			void ChannelForm::selectMidiDevice ( int iMidiItem )
485			{
486			if (m_iDirtySetup > 0)
487			return;
488
489			selectMidiDeviceItem(iMidiItem);
490			optionsChanged();
491			}
492
493
494			// MIDI device options.
495			void ChannelForm::setupMidiDevice (void)
496			{
497			setupDevice(m_midiDevices.at(ui.MidiDeviceComboBox->currentItem()),
498			qsamplerDevice::Midi, ui.MidiDriverComboBox->currentText());
499			}
500
501
502			// Refresh Audio driver item devices.
503			void ChannelForm::selectAudioDriverItem ( const QString& sAudioDriver )
504			{
505			MainForm *pMainForm = MainForm::getInstance();
506			if (pMainForm == NULL)
507			return;
508			if (pMainForm->client() == NULL)
509			return;
510
511			const QString sDriverName = sAudioDriver.upper();
512
513			// Save current device id.
514			int iDeviceID = 0;
515			qsamplerDevice *pDevice = m_audioDevices.at(ui.AudioDeviceComboBox->currentItem());
516			if (pDevice)
517			iDeviceID = pDevice->deviceID();
518
519			// Clean maplist.
520			ui.AudioDeviceComboBox->clear();
521			m_audioDevices.clear();
522
523			// Populate with the current ones...
524			const QPixmap audioPixmap(":/qsampler/pixmaps/audio2.png");
525			int *piDeviceIDs = qsamplerDevice::getDevices(pMainForm->client(),
526			qsamplerDevice::Audio);
527			for (int i = 0; piDeviceIDs && piDeviceIDs[i] >= 0; i++) {
528			pDevice = new qsamplerDevice(qsamplerDevice::Audio, piDeviceIDs[i]);
529			if (pDevice->driverName().upper() == sDriverName) {
530			ui.AudioDeviceComboBox->insertItem(audioPixmap, pDevice->deviceName());
531			m_audioDevices.append(pDevice);
532			} else {
533			delete pDevice;
534			}
535			}
536
537			// Do proper enabling...
538			bool bEnabled = !m_audioDevices.isEmpty();
539			if (bEnabled) {
540			// Select the previous current device...
541			int iAudioItem = 0;
542			for (pDevice = m_audioDevices.first();
543			pDevice;
544			pDevice = m_audioDevices.next()) {
545			if (pDevice->deviceID() == iDeviceID) {
546			ui.AudioDeviceComboBox->setCurrentItem(iAudioItem);
547			selectAudioDeviceItem(iAudioItem);
548			break;
549			}
550			iAudioItem++;
551			}
552			} else {
553			ui.AudioDeviceComboBox->insertItem(
554			tr("(New Audio %1 device)").arg(sAudioDriver));
555			//ui.AudioRoutingTable->setNumRows(0);
556			}
557			ui.AudioDeviceTextLabel->setEnabled(bEnabled);
558			ui.AudioDeviceComboBox->setEnabled(bEnabled);
559			ui.AudioRoutingTable->setEnabled(bEnabled);
560			}
561
562
563			// Refresh Audio device options slot.
564			void ChannelForm::selectAudioDriver ( const QString& sAudioDriver )
565			{
566			if (m_iDirtySetup > 0)
567			return;
568
569			selectAudioDriverItem(sAudioDriver);
570			optionsChanged();
571			}
572
573
574			// Select Audio device item.
575			void ChannelForm::selectAudioDeviceItem ( int iAudioItem )
576			{
577			qsamplerDevice *pDevice = m_audioDevices.at(iAudioItem);
578			if (pDevice) {
579			// Refresh the audio routing table.
580			routingModel.refresh(pDevice, m_pChannel->audioRouting());
581			// Reset routing change map.
582			m_audioRouting.clear();
583			}
584			}
585
586
587			// Select Audio device options slot.
588			void ChannelForm::selectAudioDevice ( int iAudioItem )
589			{
590			if (m_iDirtySetup > 0)
591			return;
592
593			selectAudioDeviceItem(iAudioItem);
594			optionsChanged();
595			}
596
597
598			// Audio device options.
599			void ChannelForm::setupAudioDevice (void)
600			{
601			setupDevice(m_audioDevices.at(ui.AudioDeviceComboBox->currentItem()),
602			qsamplerDevice::Audio, ui.AudioDriverComboBox->currentText());
603			}
604
605
606			// Audio routing change slot.
607			void ChannelForm::changeAudioRouting ( int iRow, int iCol )
608			{
609			#if 0
610			if (m_iDirtySetup > 0)
611			return;
612			if (iRow < 0 \|\| iCol < 0)
613			return;
614
615			// Verify that this is a QComboTableItem (magic rtti == 1)
616			QTableItem *pItem = ui.AudioRoutingTable->item(iRow, iCol);
617			if (pItem == NULL)
618			return;
619			qsamplerChannelRoutingComboBox *pComboItem =
620			static_cast<qsamplerChannelRoutingComboBox*> (pItem);
621			// FIXME: Its not garanteed that we must have
622			// iAudioOut == iRow on all times forth!
623			m_audioRouting[iRow] = pComboItem->currentItem();
624
625			// And let's get dirty...
626			optionsChanged();
627			#endif
628			}
629
630
631			// UPdate all device lists slot.
632			void ChannelForm::updateDevices (void)
633			{
634			if (m_iDirtySetup > 0)
635			return;
636
637			selectMidiDriverItem(ui.MidiDriverComboBox->currentText());
638			selectAudioDriverItem(ui.AudioDriverComboBox->currentText());
639			optionsChanged();
640			}
641
642
643			// Dirty up settings.
644			void ChannelForm::optionsChanged (void)
645			{
646			if (m_iDirtySetup > 0)
647			return;
648
649			m_iDirtyCount++;
650			stabilizeForm();
651			}
652
653
654			// Stabilize current form state.
655			void ChannelForm::stabilizeForm (void)
656			{
657			bool bValid = true;
658			#if 0
659			const QString& sPath = InstrumentFileComboBox->currentText();
660			bValid = bValid && !sPath.isEmpty() && QFileInfo(sPath).exists();
661			#endif
662			ui.OkPushButton->setEnabled(m_iDirtyCount > 0 && bValid);
663			}
664
665
666			} // namespace QSampler