/[svn]/linuxsampler/trunk/src/engines/EngineChannelBase.h
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Diff of /linuxsampler/trunk/src/engines/EngineChannelBase.h

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revision 2427 by persson, Sat Mar 2 07:03:04 2013 UTC revision 2659 by schoenebeck, Sun Jun 29 19:34:28 2014 UTC
# Line 39  namespace LinuxSampler { Line 39  namespace LinuxSampler {
39              bool bChangeInstrument;       ///< Set to true by the loader when the channel should change instrument.              bool bChangeInstrument;       ///< Set to true by the loader when the channel should change instrument.
40              I* pInstrument;               ///< The new instrument. Also used by the loader to read the previously loaded instrument.              I* pInstrument;               ///< The new instrument. Also used by the loader to read the previously loaded instrument.
41              RTList<R*>* pRegionsInUse; ///< List of dimension regions in use by the currently loaded instrument. Continuously updated by the audio thread.              RTList<R*>* pRegionsInUse; ///< List of dimension regions in use by the currently loaded instrument. Continuously updated by the audio thread.
42                InstrumentScript* pScript; ///< Instrument script to be executed for this instrument. This is never NULL, it is always a valid InstrumentScript pointer. Use InstrumentScript::bHasValidScript whether it reflects a valid instrument script to be executed.
43      };      };
44    
45      template<class R>      template<class R>
# Line 59  namespace LinuxSampler { Line 60  namespace LinuxSampler {
60              typedef typename RTList<R*>::Iterator RTListRegionIterator;              typedef typename RTList<R*>::Iterator RTListRegionIterator;
61              typedef typename MidiKeyboardManager<V>::MidiKey MidiKey;              typedef typename MidiKeyboardManager<V>::MidiKey MidiKey;
62    
63                virtual MidiKeyboardManagerBase* GetMidiKeyboardManager() OVERRIDE {
64                    return this;
65                }
66    
67              virtual void HandBack(I* Instrument) {              virtual void HandBack(I* Instrument) {
68                  ResourceManager<InstrumentManager::instrument_id_t, I>* mgr =                  ResourceManager<InstrumentManager::instrument_id_t, I>* mgr =
69                      dynamic_cast<ResourceManager<InstrumentManager::instrument_id_t, I>*>(pEngine->GetInstrumentManager());                      dynamic_cast<ResourceManager<InstrumentManager::instrument_id_t, I>*>(pEngine->GetInstrumentManager());
# Line 84  namespace LinuxSampler { Line 89  namespace LinuxSampler {
89              }              }
90    
91              virtual void DeleteRegionsInUse() {              virtual void DeleteRegionsInUse() {
92                    RTList<R*>* previous = NULL; // prevent double free
93                  {                  {
94                      InstrumentChangeCmd<R, I>& cmd = InstrumentChangeCommand.GetConfigForUpdate();                      InstrumentChangeCmd<R, I>& cmd = InstrumentChangeCommand.GetConfigForUpdate();
95                      if (cmd.pRegionsInUse) {                      if (cmd.pRegionsInUse) {
96                            previous = cmd.pRegionsInUse;
97                          delete cmd.pRegionsInUse;                          delete cmd.pRegionsInUse;
98                          cmd.pRegionsInUse = NULL;                          cmd.pRegionsInUse = NULL;
99                      }                      }
# Line 95  namespace LinuxSampler { Line 102  namespace LinuxSampler {
102                  {                  {
103                      InstrumentChangeCmd<R, I>& cmd = InstrumentChangeCommand.SwitchConfig();                      InstrumentChangeCmd<R, I>& cmd = InstrumentChangeCommand.SwitchConfig();
104                      if (cmd.pRegionsInUse) {                      if (cmd.pRegionsInUse) {
105                          delete cmd.pRegionsInUse;                          if (cmd.pRegionsInUse != previous)
106                                delete cmd.pRegionsInUse;
107                          cmd.pRegionsInUse = NULL;                          cmd.pRegionsInUse = NULL;
108                      }                      }
109                      cmd.bChangeInstrument = false;                      cmd.bChangeInstrument = false;
# Line 179  namespace LinuxSampler { Line 187  namespace LinuxSampler {
187                      ResetInternal();                      ResetInternal();
188    
189                      DeleteRegionsInUse();                      DeleteRegionsInUse();
190                        UnloadScriptInUse();
191    
192                      InstrumentChangeCmd<R, I>& cmd = InstrumentChangeCommand.GetConfigForUpdate();                      InstrumentChangeCmd<R, I>& cmd = InstrumentChangeCommand.GetConfigForUpdate();
193                      if (cmd.pInstrument) {                      if (cmd.pInstrument) {
# Line 237  namespace LinuxSampler { Line 246  namespace LinuxSampler {
246               * we are currently using on this EngineChannel is going to be updated,               * we are currently using on this EngineChannel is going to be updated,
247               * so we can stop playback before that happens.               * so we can stop playback before that happens.
248               */               */
249              virtual void ResourceToBeUpdated(I* pResource, void*& pUpdateArg) {              virtual void ResourceToBeUpdated(I* pResource, void*& pUpdateArg) OVERRIDE {
250                  dmsg(3,("EngineChannelBase: Received instrument update message.\n"));                  dmsg(3,("EngineChannelBase: Received instrument update message.\n"));
251                  if (pEngine) pEngine->DisableAndLock();                  if (pEngine) pEngine->DisableAndLock();
252                  ResetInternal();                  ResetInternal();
# Line 248  namespace LinuxSampler { Line 257  namespace LinuxSampler {
257               * Will be called by the InstrumentResourceManager when the instrument               * Will be called by the InstrumentResourceManager when the instrument
258               * update process was completed, so we can continue with playback.               * update process was completed, so we can continue with playback.
259               */               */
260              virtual void ResourceUpdated(I* pOldResource, I* pNewResource, void* pUpdateArg) {              virtual void ResourceUpdated(I* pOldResource, I* pNewResource, void* pUpdateArg) OVERRIDE {
261                  this->pInstrument = pNewResource; //TODO: there are couple of engine parameters we should update here as well if the instrument was updated (see LoadInstrument())                  this->pInstrument = pNewResource; //TODO: there are couple of engine parameters we should update here as well if the instrument was updated (see LoadInstrument())
262                  if (pEngine) pEngine->Enable();                  if (pEngine) pEngine->Enable();
263                  bStatusChanged = true; // status of engine has changed, so set notify flag                  bStatusChanged = true; // status of engine has changed, so set notify flag
# Line 260  namespace LinuxSampler { Line 269  namespace LinuxSampler {
269               *               *
270               * @param fProgress - current progress as value between 0.0 and 1.0               * @param fProgress - current progress as value between 0.0 and 1.0
271               */               */
272              virtual void OnResourceProgress(float fProgress) {              virtual void OnResourceProgress(float fProgress) OVERRIDE {
273                  this->InstrumentStat = int(fProgress * 100.0f);                  this->InstrumentStat = int(fProgress * 100.0f);
274                  dmsg(7,("EngineChannelBase: progress %d%", InstrumentStat));                  dmsg(7,("EngineChannelBase: progress %d%", InstrumentStat));
275                  bStatusChanged = true; // status of engine has changed, so set notify flag                  bStatusChanged = true; // status of engine has changed, so set notify flag
# Line 280  namespace LinuxSampler { Line 289  namespace LinuxSampler {
289              template<class TV, class TRR, class TR, class TD, class TIM, class TI> friend class EngineBase;              template<class TV, class TRR, class TR, class TD, class TIM, class TI> friend class EngineBase;
290    
291          protected:          protected:
292              EngineChannelBase() : InstrumentChangeCommandReader(InstrumentChangeCommand) {              EngineChannelBase() :
293                    MidiKeyboardManager<V>(this),
294                    InstrumentChangeCommandReader(InstrumentChangeCommand)
295                {
296                  pInstrument = NULL;                  pInstrument = NULL;
297    
298                  // reset the instrument change command struct (need to be done                  // reset the instrument change command struct (need to be done
# Line 289  namespace LinuxSampler { Line 301  namespace LinuxSampler {
301                      InstrumentChangeCmd<R, I>& cmd = InstrumentChangeCommand.GetConfigForUpdate();                      InstrumentChangeCmd<R, I>& cmd = InstrumentChangeCommand.GetConfigForUpdate();
302                      cmd.pRegionsInUse = NULL;                      cmd.pRegionsInUse = NULL;
303                      cmd.pInstrument = NULL;                      cmd.pInstrument = NULL;
304                        cmd.pScript = new InstrumentScript(this);
305                      cmd.bChangeInstrument = false;                      cmd.bChangeInstrument = false;
306                  }                  }
307                  {                  {
308                      InstrumentChangeCmd<R, I>& cmd = InstrumentChangeCommand.SwitchConfig();                      InstrumentChangeCmd<R, I>& cmd = InstrumentChangeCommand.SwitchConfig();
309                      cmd.pRegionsInUse = NULL;                      cmd.pRegionsInUse = NULL;
310                      cmd.pInstrument = NULL;                      cmd.pInstrument = NULL;
311                        cmd.pScript = new InstrumentScript(this);
312                      cmd.bChangeInstrument = false;                      cmd.bChangeInstrument = false;
313                  }                  }
314              }              }
315    
316              virtual ~EngineChannelBase() { }              virtual ~EngineChannelBase() {
317                    InstrumentScript* previous = NULL; // prevent double free
318                    {
319                        InstrumentChangeCmd<R, I>& cmd = InstrumentChangeCommand.GetConfigForUpdate();
320                        if (cmd.pScript) {
321                            previous = cmd.pScript;
322                            delete cmd.pScript;
323                            cmd.pScript = NULL;
324                        }
325                    }
326                    {
327                        InstrumentChangeCmd<R, I>& cmd = InstrumentChangeCommand.SwitchConfig();
328                        if (cmd.pScript) {
329                            if (previous != cmd.pScript)
330                                delete cmd.pScript;
331                            cmd.pScript = NULL;
332                        }
333                    }
334                }
335    
336              typedef typename RTList<V>::Iterator RTListVoiceIterator;              typedef typename RTList<V>::Iterator RTListVoiceIterator;
337    
# Line 352  namespace LinuxSampler { Line 384  namespace LinuxSampler {
384              }              }
385    
386              /**              /**
387                 * Unload the currently used and loaded real-time instrument script.
388                 * The source code of the script is retained, so that it can still
389                 * be reloaded.
390                 */
391                void UnloadScriptInUse() {
392                    {
393                        InstrumentChangeCmd<R, I>& cmd = InstrumentChangeCommand.GetConfigForUpdate();
394                        if (cmd.pScript) cmd.pScript->unload();
395                    }
396                    {
397                        InstrumentChangeCmd<R, I>& cmd = InstrumentChangeCommand.SwitchConfig();
398                        if (cmd.pScript) cmd.pScript->unload();
399                    }
400                    InstrumentChangeCommand.SwitchConfig(); // switch back to original one
401                }
402    
403                /**
404                 * Load real-time instrument script and all its resources required
405                 * for the upcoming instrument change.
406                 *
407                 * @param text - source code of script
408                 */
409                void LoadInstrumentScript(const String& text) {
410                    InstrumentChangeCmd<R, I>& cmd = InstrumentChangeCommand.GetConfigForUpdate();
411                    // load the new script
412                    cmd.pScript->load(text);
413                }
414    
415                /**
416               * Changes the instrument for an engine channel.               * Changes the instrument for an engine channel.
417               *               *
418               * @param pInstrument - new instrument               * @param pInstrument - new instrument
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