/[svn]/linuxsampler/trunk/src/engines/gig/Engine.cpp
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Diff of /linuxsampler/trunk/src/engines/gig/Engine.cpp

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revision 1000 by schoenebeck, Wed Dec 6 22:28:17 2006 UTC revision 1001 by schoenebeck, Wed Dec 27 16:17:08 2006 UTC
# Line 392  namespace LinuxSampler { namespace gig { Line 392  namespace LinuxSampler { namespace gig {
392          // now that all ordinary voices on ALL engine channels are rendered, render new stolen voices          // now that all ordinary voices on ALL engine channels are rendered, render new stolen voices
393          RenderStolenVoices(Samples);          RenderStolenVoices(Samples);
394    
395            // handle audio routing for engine channels with FX sends
396            for (int i = 0; i < engineChannels.size(); i++) {
397                if (engineChannels[i]->fxSends.empty()) continue; // ignore if no FX sends
398                RouteAudio(engineChannels[i], Samples);
399            }
400    
401          // handle cleanup on all engine channels for the next audio fragment          // handle cleanup on all engine channels for the next audio fragment
402          for (int i = 0; i < engineChannels.size(); i++) {          for (int i = 0; i < engineChannels.size(); i++) {
403              if (!engineChannels[i]->pInstrument) continue; // ignore if no instrument loaded              if (!engineChannels[i]->pInstrument) continue; // ignore if no instrument loaded
# Line 532  namespace LinuxSampler { namespace gig { Line 538  namespace LinuxSampler { namespace gig {
538      }      }
539    
540      /**      /**
541         * Will be called in case the respective engine channel sports FX send
542         * channels. In this particular case, engine channel local buffers are
543         * used to render and mix all voices to. This method is responsible for
544         * copying the audio data from those local buffers to the master audio
545         * output channels as well as to the FX send audio output channels with
546         * their respective FX send levels.
547         *
548         * @param pEngineChannel - engine channel from which audio should be
549         *                         routed
550         * @param Samples        - amount of sample points to be routed in
551         *                         this audio fragment cycle
552         */
553        void Engine::RouteAudio(EngineChannel* pEngineChannel, uint Samples) {
554            // route master signal
555            {
556                AudioChannel* pDstL = pAudioOutputDevice->Channel(pEngineChannel->AudioDeviceChannelLeft);
557                AudioChannel* pDstR = pAudioOutputDevice->Channel(pEngineChannel->AudioDeviceChannelRight);
558                pEngineChannel->pChannelLeft->CopyTo(pDstL, Samples);
559                pEngineChannel->pChannelRight->CopyTo(pDstR, Samples);
560            }
561            // route FX send signal
562            {
563                for (int iFxSend = 0; iFxSend < pEngineChannel->GetFxSendCount(); iFxSend++) {
564                    FxSend* pFxSend = pEngineChannel->GetFxSend(iFxSend);
565                    // left channel
566                    const int iDstL = pFxSend->DestinationChannel(0);
567                    if (iDstL < 0) {
568                        dmsg(1,("Engine::RouteAudio() Error: invalid FX send (L) destination channel"));
569                    } else {
570                        AudioChannel* pDstL = pAudioOutputDevice->Channel(iDstL);
571                        if (!pDstL) {
572                            dmsg(1,("Engine::RouteAudio() Error: invalid FX send (L) destination channel"));
573                        } else pEngineChannel->pChannelLeft->CopyTo(pDstL, Samples, pFxSend->Level());
574                    }
575                    // right channel
576                    const int iDstR = pFxSend->DestinationChannel(1);
577                    if (iDstR < 0) {
578                        dmsg(1,("Engine::RouteAudio() Error: invalid FX send (R) destination channel"));
579                    } else {
580                        AudioChannel* pDstR = pAudioOutputDevice->Channel(iDstR);
581                        if (!pDstR) {
582                            dmsg(1,("Engine::RouteAudio() Error: invalid FX send (R) destination channel"));
583                        } else pEngineChannel->pChannelRight->CopyTo(pDstR, Samples, pFxSend->Level());
584                    }
585                }
586            }
587            // reset buffers with silence (zero out) for the next audio cycle
588            pEngineChannel->pChannelLeft->Clear();
589            pEngineChannel->pChannelRight->Clear();
590        }
591    
592        /**
593       * Free all keys which have turned inactive in this audio fragment, from       * Free all keys which have turned inactive in this audio fragment, from
594       * the list of active keys and clear all event lists on that engine       * the list of active keys and clear all event lists on that engine
595       * channel.       * channel.
# Line 1236  namespace LinuxSampler { namespace gig { Line 1294  namespace LinuxSampler { namespace gig {
1294          // update controller value in the engine channel's controller table          // update controller value in the engine channel's controller table
1295          pEngineChannel->ControllerTable[itControlChangeEvent->Param.CC.Controller] = itControlChangeEvent->Param.CC.Value;          pEngineChannel->ControllerTable[itControlChangeEvent->Param.CC.Controller] = itControlChangeEvent->Param.CC.Value;
1296    
1297            // handle hard coded MIDI controllers
1298          switch (itControlChangeEvent->Param.CC.Controller) {          switch (itControlChangeEvent->Param.CC.Controller) {
1299              case 5: { // portamento time              case 5: { // portamento time
1300                  pEngineChannel->PortamentoTime = (float) itControlChangeEvent->Param.CC.Value / 127.0f * (float) CONFIG_PORTAMENTO_TIME_MAX + (float) CONFIG_PORTAMENTO_TIME_MIN;                  pEngineChannel->PortamentoTime = (float) itControlChangeEvent->Param.CC.Value / 127.0f * (float) CONFIG_PORTAMENTO_TIME_MAX + (float) CONFIG_PORTAMENTO_TIME_MIN;
# Line 1374  namespace LinuxSampler { namespace gig { Line 1433  namespace LinuxSampler { namespace gig {
1433                  break;                  break;
1434              }              }
1435          }          }
1436    
1437            // handle FX send controllers
1438            if (!pEngineChannel->fxSends.empty()) {
1439                for (int iFxSend = 0; iFxSend < pEngineChannel->GetFxSendCount(); iFxSend++) {
1440                    FxSend* pFxSend = pEngineChannel->GetFxSend(iFxSend);
1441                    if (pFxSend->MidiController() == itControlChangeEvent->Param.CC.Controller)
1442                        pFxSend->SetLevel(itControlChangeEvent->Param.CC.Value);
1443                }
1444            }
1445      }      }
1446    
1447      /**      /**
# Line 1568  namespace LinuxSampler { namespace gig { Line 1636  namespace LinuxSampler { namespace gig {
1636      }      }
1637    
1638      String Engine::Version() {      String Engine::Version() {
1639          String s = "$Revision: 1.67 $";          String s = "$Revision: 1.68 $";
1640          return s.substr(11, s.size() - 13); // cut dollar signs, spaces and CVS macro keyword          return s.substr(11, s.size() - 13); // cut dollar signs, spaces and CVS macro keyword
1641      }      }
1642    
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