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qsamplerChannel.h

// qsamplerChannel.h
//
/****************************************************************************
   Copyright (C) 2004-2007, rncbc aka Rui Nuno Capela. All rights reserved.
   Copyright (C) 2007, Christian Schoenebeck

   This program is free software; you can redistribute it and/or
   modify it under the terms of the GNU General Public License
   as published by the Free Software Foundation; either version 2
   of the License, or (at your option) any later version.

   This program is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   GNU General Public License for more details.

   You should have received a copy of the GNU General Public License along
   with this program; if not, write to the Free Software Foundation, Inc.,
   51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.

*****************************************************************************/

#ifndef __qsamplerChannel_h
#define __qsamplerChannel_h

#include <QTableWidgetItem>
#include <QItemDelegate>

#include <lscp/client.h>
#include <lscp/device.h>

#include "qsamplerOptions.h"

namespace QSampler {

class Device;

// Typedef'd QMap.
typedef QMap<int, int> ChannelRoutingMap;


//-------------------------------------------------------------------------
// QSampler::Channel - Sampler channel structure.
//

class Channel
{
public:

      // Constructor.
      Channel(int iChannelID = -1);
      // Default destructor.
      ~Channel();

      // Add/remove sampler channel methods.
      bool     addChannel();
      bool     removeChannel();

      // Sampler channel ID accessors.
      int      channelID() const;
      void     setChannelID(int iChannelID);

      // Readable channel name.
      QString  channelName() const;

      // Engine name property.
      const QString& engineName() const;
      bool     loadEngine(const QString& sEngineName);

      // Instrument file and index.
      const QString& instrumentFile() const;
      int      instrumentNr() const;
      const QString& instrumentName() const;
      int      instrumentStatus() const;

      // Instrument file loader.
      bool     loadInstrument(const QString& sInstrumentFile, int iInstrumentNr);
      // Special instrument file/name/number settler.
      bool     setInstrument(const QString& sInstrumentFile, int iInstrumentNr);

      // MIDI input driver (DEPRECATED).
      const QString& midiDriver() const;
      bool     setMidiDriver(const QString& sMidiDriver);

      // MIDI input device.
      int      midiDevice() const;
      bool     setMidiDevice(int iMidiDevice);

      // MIDI input port.
      int      midiPort() const;
      bool     setMidiPort(int iMidiPort);

      // MIDI input channel.
      int      midiChannel() const;
      bool     setMidiChannel(int iMidiChannel);

      // MIDI instrument map.
      int      midiMap() const;
      bool     setMidiMap(int iMidiMap);

      // Audio output driver (DEPRECATED).
      const QString& audioDriver() const;
      bool     setAudioDriver(const QString& sAudioDriver);

      // Audio output device.
      int      audioDevice() const;
      bool     setAudioDevice(int iAudioDevice);

      // Sampler channel volume.
      float    volume() const;
      bool     setVolume(float fVolume);

      // Sampler channel mute state.
      bool     channelMute() const;
      bool     setChannelMute(bool bMute);

      // Sampler channel solo state.
      bool     channelSolo() const;
      bool     setChannelSolo(bool bSolo);

      // Audio routing accessors.
      int      audioChannel(int iAudioOut) const;
      bool     setAudioChannel(int iAudioOut, int iAudioIn);
      // The audio routing map itself.
      const ChannelRoutingMap& audioRouting() const;

      // Istrument name remapper.
      void     updateInstrumentName();

      // Channel info structure map executive.
      bool     updateChannelInfo();

      // Channel setup dialog form.
      bool     channelSetup(QWidget *pParent);

      // Reset channel method.
      bool     channelReset();

      // Spawn instrument editor method.
      bool     editChannel();

      // Message logging methods (brainlessly mapped to main form's).
      void     appendMessages       (const QString & s) const;
      void     appendMessagesColor  (const QString & s, const QString & c) const;
      void     appendMessagesText   (const QString & s) const;
      void     appendMessagesError  (const QString & s) const;
      void     appendMessagesClient (const QString & s) const;

      // Context menu event handler.
      void contextMenuEvent(QContextMenuEvent *pEvent);

      // Common (invalid) name-helpers.
      static QString noEngineName();
      static QString noInstrumentName();
      static QString loadingInstrument();

      // Check whether a given file is an instrument file.
      static bool isInstrumentFile (const QString& sInstrumentFile);

      // Retrieve the available instrument name(s) of an instrument file (.gig).
      static QString getInstrumentName (const QString& sInstrumentFile,
                                          int iInstrumentNr, bool bInstrumentNames);
      static QStringList getInstrumentList (const QString& sInstrumentFile,
                                          bool bInstrumentNames);

private:

      // Unique channel identifier.
      int     m_iChannelID;

      // Sampler channel info map.
      QString m_sEngineName;
      QString m_sInstrumentName;
      QString m_sInstrumentFile;
      int     m_iInstrumentNr;
      int     m_iInstrumentStatus;
      QString m_sMidiDriver;
      int     m_iMidiDevice;
      int     m_iMidiPort;
      int     m_iMidiChannel;
      int     m_iMidiMap;
      QString m_sAudioDriver;
      int     m_iAudioDevice;
      float   m_fVolume;
      bool    m_bMute;
      bool    m_bSolo;

      // The audio routing mapping.
      ChannelRoutingMap m_audioRouting;
};


//-------------------------------------------------------------------------
// QSampler::ChannelRoutingModel - data model for audio routing
//                                 (used for QTableView)
//

struct ChannelRoutingItem {
      QStringList options;
      int         selection;
};

class ChannelRoutingModel : public QAbstractTableModel
{
      Q_OBJECT
public:

      ChannelRoutingModel(QObject* pParent = NULL);

      // overridden methods from subclass(es)
      int rowCount(const QModelIndex& parent = QModelIndex()) const;
      int columnCount(const QModelIndex& parent = QModelIndex()) const;
      Qt::ItemFlags flags(const QModelIndex& index) const;
      bool setData(const QModelIndex& index, const QVariant& value,
            int role = Qt::EditRole);
      QVariant data(const QModelIndex &index, int role) const;
      QVariant headerData(int section, Qt::Orientation orientation,
            int role = Qt::DisplayRole) const;

      // own methods
      ChannelRoutingMap routingMap() const { return m_routing; }

      void clear() { m_routing.clear(); }

public slots:

      void refresh(Device *pDevice,
            const ChannelRoutingMap& routing);

private:

      Device *m_pDevice;
      ChannelRoutingMap m_routing;
};


//-------------------------------------------------------------------------
// QSampler::ChannelRoutingDelegate - table cell renderer for audio routing
//

class ChannelRoutingDelegate : public QItemDelegate
{
      Q_OBJECT

public:

      ChannelRoutingDelegate(QObject* pParent = NULL);

      QWidget* createEditor(QWidget *pParent,
            const QStyleOptionViewItem& option, const QModelIndex& index) const;
      void setEditorData(QWidget *pEditor, const QModelIndex& index) const;
      void setModelData(QWidget *pEditor, QAbstractItemModel* model,
            const QModelIndex& index) const;
      void updateEditorGeometry(QWidget *pEditor,
            const QStyleOptionViewItem& option, const QModelIndex& index) const;
};

} // namespace QSampler

// So we can use it i.e. through QVariant
Q_DECLARE_METATYPE(QSampler::ChannelRoutingItem)

#endif  // __qsamplerChannel_h


// end of qsamplerChannel.h

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