/[svn]/linuxsampler/trunk/src/engines/gig/Engine.cpp
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revision 924 by schoenebeck, Sat Oct 21 14:13:09 2006 UTC revision 1037 by schoenebeck, Tue Jan 23 20:03:22 2007 UTC
# Line 2  Line 2 
2   *                                                                         *   *                                                                         *
3   *   LinuxSampler - modular, streaming capable sampler                     *   *   LinuxSampler - modular, streaming capable sampler                     *
4   *                                                                         *   *                                                                         *
5   *   Copyright (C) 2003, 2004 by Benno Senoner and Christian Schoenebeck   *   *   Copyright (C) 2003,2004 by Benno Senoner and Christian Schoenebeck   *
6   *   Copyright (C) 2005, 2006 Christian Schoenebeck                        *   *   Copyright (C) 2005-2007 Christian Schoenebeck                        *
7   *                                                                         *   *                                                                         *
8   *   This program is free software; you can redistribute it and/or modify  *   *   This program is free software; you can redistribute it and/or modify  *
9   *   it under the terms of the GNU General Public License as published by  *   *   it under the terms of the GNU General Public License as published by  *
# Line 97  namespace LinuxSampler { namespace gig { Line 97  namespace LinuxSampler { namespace gig {
97          pAudioOutputDevice = NULL;          pAudioOutputDevice = NULL;
98          pDiskThread        = NULL;          pDiskThread        = NULL;
99          pEventGenerator    = NULL;          pEventGenerator    = NULL;
100          pSysexBuffer       = new RingBuffer<uint8_t>(CONFIG_SYSEX_BUFFER_SIZE, 0);          pSysexBuffer       = new RingBuffer<uint8_t,false>(CONFIG_SYSEX_BUFFER_SIZE, 0);
101          pEventQueue        = new RingBuffer<Event>(CONFIG_MAX_EVENTS_PER_FRAGMENT, 0);          pEventQueue        = new RingBuffer<Event,false>(CONFIG_MAX_EVENTS_PER_FRAGMENT, 0);
102          pEventPool         = new Pool<Event>(CONFIG_MAX_EVENTS_PER_FRAGMENT);          pEventPool         = new Pool<Event>(CONFIG_MAX_EVENTS_PER_FRAGMENT);
103          pVoicePool         = new Pool<Voice>(CONFIG_MAX_VOICES);          pVoicePool         = new Pool<Voice>(CONFIG_MAX_VOICES);
104          pVoiceStealingQueue = new RTList<Event>(pEventPool);          pVoiceStealingQueue = new RTList<Event>(pEventPool);
# Line 132  namespace LinuxSampler { namespace gig { Line 132  namespace LinuxSampler { namespace gig {
132          if (pEventGenerator) delete pEventGenerator;          if (pEventGenerator) delete pEventGenerator;
133          if (pVoiceStealingQueue) delete pVoiceStealingQueue;          if (pVoiceStealingQueue) delete pVoiceStealingQueue;
134          if (pSysexBuffer) delete pSysexBuffer;          if (pSysexBuffer) delete pSysexBuffer;
135          EngineFactory::Destroy(this);          Unregister();
136      }      }
137    
138      void Engine::Enable() {      void Engine::Enable() {
# Line 306  namespace LinuxSampler { namespace gig { Line 306  namespace LinuxSampler { namespace gig {
306       *                  current audio cycle       *                  current audio cycle
307       */       */
308      void Engine::ImportEvents(uint Samples) {      void Engine::ImportEvents(uint Samples) {
309          RingBuffer<Event>::NonVolatileReader eventQueueReader = pEventQueue->get_non_volatile_reader();          RingBuffer<Event,false>::NonVolatileReader eventQueueReader = pEventQueue->get_non_volatile_reader();
310          Event* pEvent;          Event* pEvent;
311          while (true) {          while (true) {
312              // get next event from input event queue              // get next event from input event queue
# Line 340  namespace LinuxSampler { namespace gig { Line 340  namespace LinuxSampler { namespace gig {
340       *  @returns       0 on success       *  @returns       0 on success
341       */       */
342      int Engine::RenderAudio(uint Samples) {      int Engine::RenderAudio(uint Samples) {
343          dmsg(5,("RenderAudio(Samples=%d)\n", Samples));          dmsg(7,("RenderAudio(Samples=%d)\n", Samples));
344    
345          // return if engine disabled          // return if engine disabled
346          if (EngineDisabled.Pop()) {          if (EngineDisabled.Pop()) {
# 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->MixTo(pDstL, Samples);
559                pEngineChannel->pChannelRight->MixTo(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->MixTo(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->MixTo(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 1243  namespace LinuxSampler { namespace gig { Line 1302  namespace LinuxSampler { namespace gig {
1302              }              }
1303              case 7: { // volume              case 7: { // volume
1304                  //TODO: not sample accurate yet                  //TODO: not sample accurate yet
1305                  pEngineChannel->GlobalVolume = VolumeCurve[itControlChangeEvent->Param.CC.Value] *  CONFIG_GLOBAL_ATTENUATION;                  pEngineChannel->MidiVolume = VolumeCurve[itControlChangeEvent->Param.CC.Value];
1306                  pEngineChannel->bStatusChanged = true; // engine channel status has changed, so set notify flag                  pEngineChannel->bStatusChanged = true; // engine channel status has changed, so set notify flag
1307                  break;                  break;
1308              }              }
# 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 1382  namespace LinuxSampler { namespace gig { Line 1450  namespace LinuxSampler { namespace gig {
1450       *  @param itSysexEvent - sysex data size and time stamp of the sysex event       *  @param itSysexEvent - sysex data size and time stamp of the sysex event
1451       */       */
1452      void Engine::ProcessSysex(Pool<Event>::Iterator& itSysexEvent) {      void Engine::ProcessSysex(Pool<Event>::Iterator& itSysexEvent) {
1453          RingBuffer<uint8_t>::NonVolatileReader reader = pSysexBuffer->get_non_volatile_reader();          RingBuffer<uint8_t,false>::NonVolatileReader reader = pSysexBuffer->get_non_volatile_reader();
1454    
1455          uint8_t exclusive_status, id;          uint8_t exclusive_status, id;
1456          if (!reader.pop(&exclusive_status)) goto free_sysex_data;          if (!reader.pop(&exclusive_status)) goto free_sysex_data;
# Line 1401  namespace LinuxSampler { namespace gig { Line 1469  namespace LinuxSampler { namespace gig {
1469    
1470                  // command address                  // command address
1471                  uint8_t addr[3]; // 2 byte addr MSB, followed by 1 byte addr LSB)                  uint8_t addr[3]; // 2 byte addr MSB, followed by 1 byte addr LSB)
1472                  const RingBuffer<uint8_t>::NonVolatileReader checksum_reader = reader; // so we can calculate the check sum later                  const RingBuffer<uint8_t,false>::NonVolatileReader checksum_reader = reader; // so we can calculate the check sum later
1473                  if (reader.read(&addr[0], 3) != 3) goto free_sysex_data;                  if (reader.read(&addr[0], 3) != 3) goto free_sysex_data;
1474                  if (addr[0] == 0x40 && addr[1] == 0x00) { // System Parameters                  if (addr[0] == 0x40 && addr[1] == 0x00) { // System Parameters
1475                      dmsg(3,("\tSystem Parameter\n"));                      dmsg(3,("\tSystem Parameter\n"));
# Line 1448  namespace LinuxSampler { namespace gig { Line 1516  namespace LinuxSampler { namespace gig {
1516       *                     question       *                     question
1517       * @param DataSize   - size of the GS message data (in bytes)       * @param DataSize   - size of the GS message data (in bytes)
1518       */       */
1519      uint8_t Engine::GSCheckSum(const RingBuffer<uint8_t>::NonVolatileReader AddrReader, uint DataSize) {      uint8_t Engine::GSCheckSum(const RingBuffer<uint8_t,false>::NonVolatileReader AddrReader, uint DataSize) {
1520          RingBuffer<uint8_t>::NonVolatileReader reader = AddrReader;          RingBuffer<uint8_t,false>::NonVolatileReader reader = AddrReader;
1521          uint bytes = 3 /*addr*/ + DataSize;          uint bytes = 3 /*addr*/ + DataSize;
1522          uint8_t addr_and_data[bytes];          uint8_t addr_and_data[bytes];
1523          reader.read(&addr_and_data[0], bytes);          reader.read(&addr_and_data[0], bytes);
# 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: 1.65 $";          String s = "$Revision: 1.70 $";
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    
1643        InstrumentManager* Engine::GetInstrumentManager() {
1644            return &instruments;
1645        }
1646    
1647      // static constant initializers      // static constant initializers
1648      const float* Engine::VolumeCurve(InitVolumeCurve());      const float* Engine::VolumeCurve(InitVolumeCurve());
1649      const float* Engine::PanCurve(InitPanCurve());      const float* Engine::PanCurve(InitPanCurve());

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