/[svn]/qsampler/trunk/src/qsamplerChannel.cpp
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revision 264 by capela, Wed Sep 29 13:12:45 2004 UTC revision 344 by capela, Tue Jan 18 13:53:04 2005 UTC
# Line 1  Line 1 
1  // qsamplerChannel.cpp  // qsamplerChannel.cpp
2  //  //
3  /****************************************************************************  /****************************************************************************
4     Copyright (C) 2003-2004, rncbc aka Rui Nuno Capela. All rights reserved.     Copyright (C) 2003-2005, rncbc aka Rui Nuno Capela. All rights reserved.
5    
6     This program is free software; you can redistribute it and/or     This program is free software; you can redistribute it and/or
7     modify it under the terms of the GNU General Public License     modify it under the terms of the GNU General Public License
# Line 22  Line 22 
22  #include "qsamplerChannel.h"  #include "qsamplerChannel.h"
23    
24  #include "qsamplerMainForm.h"  #include "qsamplerMainForm.h"
25    #include "qsamplerChannelForm.h"
26    
27  #include "config.h"  #include "config.h"
28    
29    #include <qfileinfo.h>
30    
31    #ifdef CONFIG_LIBGIG
32    #include "gig.h"
33    #endif
34    
35    #define QSAMPLER_INSTRUMENT_MAX 8
36    
37    
38  //-------------------------------------------------------------------------  //-------------------------------------------------------------------------
39  // qsamplerChannel - Sampler channel structure.  // qsamplerChannel - Sampler channel structure.
# Line 37  qsamplerChannel::qsamplerChannel ( qsamp Line 46  qsamplerChannel::qsamplerChannel ( qsamp
46      m_iChannelID = iChannelID;      m_iChannelID = iChannelID;
47    
48  //  m_sEngineName       = QObject::tr("(No engine)");  //  m_sEngineName       = QObject::tr("(No engine)");
49  //  m_sInstrumentFile   = QObject::tr("(No instrument)");  //  m_sInstrumentName   = QObject::tr("(No instrument)");
50    //  m_sInstrumentFile   = m_sInstrumentName;
51      m_iInstrumentNr     = -1;      m_iInstrumentNr     = -1;
52      m_iInstrumentStatus = -1;      m_iInstrumentStatus = -1;
53      m_sMidiDriver       = "Alsa";   // DEPRECATED.      m_sMidiDriver       = "Alsa";   // DEPRECATED.
# Line 76  lscp_client_t *qsamplerChannel::client ( Line 86  lscp_client_t *qsamplerChannel::client (
86  }  }
87    
88    
89    // Create a new sampler channel, if not already.
90    bool qsamplerChannel::addChannel (void)
91    {
92        if (client() == NULL)
93            return false;
94    
95        // Are we a new channel?
96        if (m_iChannelID < 0) {
97            m_iChannelID = ::lscp_add_channel(client());
98            if (m_iChannelID < 0) {
99                appendMessagesClient("lscp_add_channel");
100                appendMessagesError(QObject::tr("Could not create the new channel.\n\nSorry."));
101            }   // Otherwise it's created...
102            else appendMessages(QObject::tr("Channel %1 created.").arg(m_iChannelID));
103        }
104    
105        // Return whether we're a valid channel...
106        return (m_iChannelID >= 0);
107    }
108    
109    
110    // Remove sampler channel.
111    bool qsamplerChannel::removeChannel (void)
112    {
113        if (client() == NULL)
114            return false;
115    
116        // Are we an existing channel?
117        if (m_iChannelID >= 0) {
118            if (::lscp_remove_channel(client(), m_iChannelID) != LSCP_OK) {
119                appendMessagesClient("lscp_remove_channel");
120                appendMessagesError(QObject::tr("Could not remove channel.\n\nSorry."));
121            } else {
122                // Otherwise it's removed.
123                appendMessages(QObject::tr("Channel %1 removed.").arg(m_iChannelID));
124                m_iChannelID = -1;
125            }
126        }
127        
128        // Return whether we've removed the channel...
129        return (m_iChannelID < 0);
130    }
131    
132    
133  // Channel-ID (aka Sammpler-Channel) accessors.  // Channel-ID (aka Sammpler-Channel) accessors.
134  int qsamplerChannel::channelID (void)  int qsamplerChannel::channelID (void)
135  {  {
# Line 85  int qsamplerChannel::channelID (void) Line 139  int qsamplerChannel::channelID (void)
139  void qsamplerChannel::setChannelID ( int iChannelID )  void qsamplerChannel::setChannelID ( int iChannelID )
140  {  {
141      m_iChannelID = iChannelID;      m_iChannelID = iChannelID;
142    }
143    
144    
145      updateChannelInfo();  // Readable channel name.
146    QString qsamplerChannel::channelName (void)
147    {
148        return (m_iChannelID < 0 ? QObject::tr("New Channel") : QObject::tr("Channel %1").arg(m_iChannelID));
149  }  }
150    
151    
# Line 98  QString& qsamplerChannel::engineName (vo Line 157  QString& qsamplerChannel::engineName (vo
157    
158  bool qsamplerChannel::loadEngine ( const QString& sEngineName )  bool qsamplerChannel::loadEngine ( const QString& sEngineName )
159  {  {
160      if (client() == NULL)      if (client() == NULL || m_iChannelID < 0)
161          return false;          return false;
162    
163      if (::lscp_load_engine(client(), sEngineName.latin1(), m_iChannelID) != LSCP_OK) {      if (::lscp_load_engine(client(), sEngineName.latin1(), m_iChannelID) != LSCP_OK) {
# Line 111  bool qsamplerChannel::loadEngine ( const Line 170  bool qsamplerChannel::loadEngine ( const
170  }  }
171    
172    
173    // Instrument name accessor.
174    QString& qsamplerChannel::instrumentName (void)
175    {
176        return m_sInstrumentName;
177    }
178    
179  // Instrument filename accessor.  // Instrument filename accessor.
180  QString& qsamplerChannel::instrumentFile (void)  QString& qsamplerChannel::instrumentFile (void)
181  {  {
# Line 132  int qsamplerChannel::instrumentStatus (v Line 197  int qsamplerChannel::instrumentStatus (v
197  // Instrument file loader.  // Instrument file loader.
198  bool qsamplerChannel::loadInstrument ( const QString& sInstrumentFile, int iInstrumentNr )  bool qsamplerChannel::loadInstrument ( const QString& sInstrumentFile, int iInstrumentNr )
199  {  {
200      if (client() == NULL)      if (client() == NULL || m_iChannelID < 0)
201          return false;          return false;
202    
203      if (::lscp_load_instrument_non_modal(client(), sInstrumentFile.latin1(), iInstrumentNr, m_iChannelID) != LSCP_OK) {      if (::lscp_load_instrument_non_modal(client(), sInstrumentFile.latin1(), iInstrumentNr, m_iChannelID) != LSCP_OK) {
# Line 140  bool qsamplerChannel::loadInstrument ( c Line 205  bool qsamplerChannel::loadInstrument ( c
205          return false;          return false;
206      }      }
207    
208        m_sInstrumentName = getInstrumentName(sInstrumentFile, iInstrumentNr, true);
209      m_sInstrumentFile = sInstrumentFile;      m_sInstrumentFile = sInstrumentFile;
210      m_iInstrumentNr = iInstrumentNr;      m_iInstrumentNr = iInstrumentNr;
211      m_iInstrumentStatus = 0;      m_iInstrumentStatus = 0;
# Line 156  QString& qsamplerChannel::midiDriver (vo Line 222  QString& qsamplerChannel::midiDriver (vo
222    
223  bool qsamplerChannel::setMidiDriver ( const QString& sMidiDriver )  bool qsamplerChannel::setMidiDriver ( const QString& sMidiDriver )
224  {  {
225      if (client() == NULL)      if (client() == NULL || m_iChannelID < 0)
226          return false;          return false;
227    
228      if (::lscp_set_channel_midi_type(client(), m_iChannelID, sMidiDriver.latin1()) != LSCP_OK) {      if (::lscp_set_channel_midi_type(client(), m_iChannelID, sMidiDriver.latin1()) != LSCP_OK) {
# Line 177  int qsamplerChannel::midiDevice (void) Line 243  int qsamplerChannel::midiDevice (void)
243    
244  bool qsamplerChannel::setMidiDevice ( int iMidiDevice )  bool qsamplerChannel::setMidiDevice ( int iMidiDevice )
245  {  {
246      if (client() == NULL)      if (client() == NULL || m_iChannelID < 0)
247          return false;          return false;
248    
249      if (::lscp_set_channel_midi_device(client(), m_iChannelID, iMidiDevice) != LSCP_OK) {      if (::lscp_set_channel_midi_device(client(), m_iChannelID, iMidiDevice) != LSCP_OK) {
# Line 198  int qsamplerChannel::midiPort (void) Line 264  int qsamplerChannel::midiPort (void)
264    
265  bool qsamplerChannel::setMidiPort ( int iMidiPort )  bool qsamplerChannel::setMidiPort ( int iMidiPort )
266  {  {
267      if (client() == NULL)      if (client() == NULL || m_iChannelID < 0)
268          return false;          return false;
269    
270      if (::lscp_set_channel_midi_port(client(), m_iChannelID, iMidiPort) != LSCP_OK) {      if (::lscp_set_channel_midi_port(client(), m_iChannelID, iMidiPort) != LSCP_OK) {
# Line 219  int qsamplerChannel::midiChannel (void) Line 285  int qsamplerChannel::midiChannel (void)
285    
286  bool qsamplerChannel::setMidiChannel ( int iMidiChannel )  bool qsamplerChannel::setMidiChannel ( int iMidiChannel )
287  {  {
288      if (client() == NULL)      if (client() == NULL || m_iChannelID < 0)
289          return false;          return false;
290    
291      if (::lscp_set_channel_midi_channel(client(), m_iChannelID, iMidiChannel) != LSCP_OK) {      if (::lscp_set_channel_midi_channel(client(), m_iChannelID, iMidiChannel) != LSCP_OK) {
# Line 240  int qsamplerChannel::audioDevice (void) Line 306  int qsamplerChannel::audioDevice (void)
306    
307  bool qsamplerChannel::setAudioDevice ( int iAudioDevice )  bool qsamplerChannel::setAudioDevice ( int iAudioDevice )
308  {  {
309      if (client() == NULL)      if (client() == NULL || m_iChannelID < 0)
310          return false;          return false;
311    
312      if (::lscp_set_channel_audio_device(client(), m_iChannelID, iAudioDevice) != LSCP_OK) {      if (::lscp_set_channel_audio_device(client(), m_iChannelID, iAudioDevice) != LSCP_OK) {
# Line 261  QString& qsamplerChannel::audioDriver (v Line 327  QString& qsamplerChannel::audioDriver (v
327    
328  bool qsamplerChannel::setAudioDriver ( const QString& sAudioDriver )  bool qsamplerChannel::setAudioDriver ( const QString& sAudioDriver )
329  {  {
330      if (client() == NULL)      if (client() == NULL || m_iChannelID < 0)
331          return false;          return false;
332    
333      if (::lscp_set_channel_audio_type(client(), m_iChannelID, sAudioDriver.latin1()) != LSCP_OK) {      if (::lscp_set_channel_audio_type(client(), m_iChannelID, sAudioDriver.latin1()) != LSCP_OK) {
# Line 282  float qsamplerChannel::volume (void) Line 348  float qsamplerChannel::volume (void)
348    
349  bool qsamplerChannel::setVolume ( float fVolume )  bool qsamplerChannel::setVolume ( float fVolume )
350  {  {
351      if (client() == NULL)      if (client() == NULL || m_iChannelID < 0)
352          return false;          return false;
353    
354      if (::lscp_set_channel_volume(client(), m_iChannelID, fVolume) != LSCP_OK) {      if (::lscp_set_channel_volume(client(), m_iChannelID, fVolume) != LSCP_OK) {
# Line 296  bool qsamplerChannel::setVolume ( float Line 362  bool qsamplerChannel::setVolume ( float
362    
363    
364  // Update whole channel info state.  // Update whole channel info state.
365  void qsamplerChannel::updateChannelInfo (void)  bool qsamplerChannel::updateChannelInfo (void)
366  {  {
367      // Check if we're up and connected.      if (client() == NULL || m_iChannelID < 0)
368      if (client() == NULL)          return false;
         return;  
369    
370      // Read channel information.      // Read channel information.
371      lscp_channel_info_t *pChannelInfo = ::lscp_get_channel_info(client(), m_iChannelID);      lscp_channel_info_t *pChannelInfo = ::lscp_get_channel_info(client(), m_iChannelID);
372      if (pChannelInfo == NULL) {      if (pChannelInfo == NULL) {
373          appendMessagesClient("lscp_get_channel_info");          appendMessagesClient("lscp_get_channel_info");
374          appendMessagesError(QObject::tr("Could not get channel information.\n\nSorry."));          appendMessagesError(QObject::tr("Could not get channel information.\n\nSorry."));
375      } else {          return false;
         // Cache in channel information.  
         m_sEngineName       = pChannelInfo->engine_name;  
         m_sInstrumentFile   = pChannelInfo->instrument_file;  
         m_iInstrumentNr     = pChannelInfo->instrument_nr;  
         m_iInstrumentStatus = pChannelInfo->instrument_status;  
         m_iMidiDevice       = pChannelInfo->midi_device;  
         m_iMidiPort         = pChannelInfo->midi_port;  
         m_iMidiChannel      = pChannelInfo->midi_channel;  
         m_iAudioDevice      = pChannelInfo->audio_device;  
         m_fVolume           = pChannelInfo->volume;  
         // Some sanity checks.  
         if (m_sEngineName == "NONE")  
             m_sEngineName = QString::null;  
         if (m_sInstrumentFile == "NONE")  
             m_sInstrumentFile = QString::null;  
376      }      }
377    
378        // First, check if intrument name has changed,
379        // taking care that instrument name lookup might be expensive,
380        // so we better make it only once and when really needed...
381        if ((m_sInstrumentFile != pChannelInfo->instrument_file) ||
382            (m_iInstrumentNr   != pChannelInfo->instrument_nr)) {
383            m_sInstrumentFile = pChannelInfo->instrument_file;
384            m_iInstrumentNr   = pChannelInfo->instrument_nr;
385                    m_sInstrumentName = getInstrumentName(m_sInstrumentFile,
386                            m_iInstrumentNr, (options() && options()->bInstrumentNames));
387            }
388        // Cache in other channel information.
389        m_sEngineName       = pChannelInfo->engine_name;
390        m_iInstrumentStatus = pChannelInfo->instrument_status;
391        m_iMidiDevice       = pChannelInfo->midi_device;
392        m_iMidiPort         = pChannelInfo->midi_port;
393        m_iMidiChannel      = pChannelInfo->midi_channel;
394        m_iAudioDevice      = pChannelInfo->audio_device;
395        m_fVolume           = pChannelInfo->volume;
396        // Some sanity checks.
397        if (m_sEngineName == "NONE")
398            m_sEngineName = QString::null;
399        if (m_sInstrumentFile == "NONE") {
400            m_sInstrumentFile = QString::null;
401            m_sInstrumentName = QString::null;
402            }
403    
404        return true;
405  }  }
406    
407    
408  // Reset channel method.  // Reset channel method.
409  void qsamplerChannel::resetChannel (void)  bool qsamplerChannel::resetChannel (void)
410  {  {
411      // Check if we're up and connected.      if (client() == NULL || m_iChannelID < 0)
412      if (client() == NULL)          return false;
         return;  
413    
414      if (::lscp_reset_channel(client(), m_iChannelID) != LSCP_OK)      if (::lscp_reset_channel(client(), m_iChannelID) != LSCP_OK) {
415          appendMessagesClient("lscp_reset_channel");          appendMessagesClient("lscp_reset_channel");
416      else          return false;
417          appendMessages(QObject::tr("Channel %1 reset.").arg(m_iChannelID));      }
418    
419        appendMessages(QObject::tr("Channel %1 reset.").arg(m_iChannelID));
420        return true;
421    }
422    
423    
424    // Channel setup dialog form.
425    bool qsamplerChannel::channelSetup ( QWidget *pParent )
426    {
427        bool bResult = false;
428    
429        qsamplerChannelForm *pChannelForm = new qsamplerChannelForm(pParent);
430        if (pChannelForm) {
431            pChannelForm->setup(this);
432            bResult = pChannelForm->exec();
433            delete pChannelForm;
434        }
435    
436        return bResult;
437  }  }
438    
439    
440  // Redirected messages output methods.  // Redirected messages output methods.
441  void qsamplerChannel::appendMessages( const QString& s )  void qsamplerChannel::appendMessages( const QString& s )
442  {  {
443      m_pMainForm->appendMessages(s);      if (m_pMainForm) m_pMainForm->appendMessages(s);
444  }  }
445    
446  void qsamplerChannel::appendMessagesColor( const QString& s, const QString& c )  void qsamplerChannel::appendMessagesColor( const QString& s, const QString& c )
447  {  {
448      m_pMainForm->appendMessagesColor(s, c);      if (m_pMainForm) m_pMainForm->appendMessagesColor(s, c);
449  }  }
450    
451  void qsamplerChannel::appendMessagesText( const QString& s )  void qsamplerChannel::appendMessagesText( const QString& s )
452  {  {
453      m_pMainForm->appendMessagesText(s);      if (m_pMainForm) m_pMainForm->appendMessagesText(s);
454  }  }
455    
456  void qsamplerChannel::appendMessagesError( const QString& s )  void qsamplerChannel::appendMessagesError( const QString& s )
457  {  {
458      m_pMainForm->appendMessagesError(s);      if (m_pMainForm) m_pMainForm->appendMessagesError(s);
459  }  }
460    
461  void qsamplerChannel::appendMessagesClient( const QString& s )  void qsamplerChannel::appendMessagesClient( const QString& s )
462  {  {
463      m_pMainForm->appendMessagesClient(s);      if (m_pMainForm) m_pMainForm->appendMessagesClient(s);
464    }
465    
466    
467    // Context menu event handler.
468    void qsamplerChannel::contextMenuEvent( QContextMenuEvent *pEvent )
469    {
470        if (m_pMainForm) m_pMainForm->contextMenuEvent(pEvent);
471    }
472    
473    
474    // Retrieve the instrument list of a instrument file (.gig).
475    QStringList qsamplerChannel::getInstrumentList( const QString& sInstrumentFile,
476            bool bInstrumentNames )
477    {
478        QFileInfo fileinfo(sInstrumentFile);
479        QString sInstrumentName = fileinfo.fileName();
480        QStringList instlist;
481    
482        if (fileinfo.exists()) {
483    #ifdef CONFIG_LIBGIG
484                    if (bInstrumentNames) {
485                    RIFF::File *pRiff = new RIFF::File(sInstrumentFile);
486                    gig::File  *pGig  = new gig::File(pRiff);
487                    gig::Instrument *pInstrument = pGig->GetFirstInstrument();
488                    while (pInstrument) {
489                        instlist.append((pInstrument->pInfo)->Name.c_str());
490                        pInstrument = pGig->GetNextInstrument();
491                    }
492                    delete pGig;
493                    delete pRiff;
494                    }
495                    else
496    #endif
497            for (int iInstrumentNr = 0; iInstrumentNr < QSAMPLER_INSTRUMENT_MAX; iInstrumentNr++)
498                instlist.append(sInstrumentName + " [" + QString::number(iInstrumentNr) + "]");
499        }
500        else instlist.append(sInstrumentName);
501    
502        return instlist;
503    }
504    
505    
506    // Retrieve the spacific instrument name of a instrument file (.gig), given its index.
507    QString qsamplerChannel::getInstrumentName( const QString& sInstrumentFile,
508            int iInstrumentNr, bool bInstrumentNames )
509    {
510        QFileInfo fileinfo(sInstrumentFile);
511        QString sInstrumentName = fileinfo.fileName();
512    
513        if (fileinfo.exists()) {
514    #ifdef CONFIG_LIBGIG
515                    if (bInstrumentNames) {
516                    RIFF::File *pRiff = new RIFF::File(sInstrumentFile);
517                    gig::File  *pGig  = new gig::File(pRiff);
518                    int iIndex = 0;
519                    gig::Instrument *pInstrument = pGig->GetFirstInstrument();
520                    while (pInstrument) {
521                        if (iIndex == iInstrumentNr) {
522                            sInstrumentName = (pInstrument->pInfo)->Name.c_str();
523                            break;
524                        }
525                        iIndex++;
526                        pInstrument = pGig->GetNextInstrument();
527                    }
528                    delete pGig;
529                    delete pRiff;
530                    }
531                    else
532    #endif
533            sInstrumentName += " [" + QString::number(iInstrumentNr) + "]";
534        }
535    
536        return sInstrumentName;
537  }  }
538    
539    
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