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* LinuxSampler - modular, streaming capable sampler * |
* LinuxSampler - modular, streaming capable sampler * |
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* * |
* * |
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* Copyright (C) 2003, 2004 by Benno Senoner and Christian Schoenebeck * |
* Copyright (C) 2003, 2004 by Benno Senoner and Christian Schoenebeck * |
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* Copyright (C) 2005, 2006 Christian Schoenebeck * |
* Copyright (C) 2005 - 2007 Christian Schoenebeck * |
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* * |
* * |
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* This program is free software; you can redistribute it and/or modify * |
* This program is free software; you can redistribute it and/or modify * |
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* 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 * |
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#include "EngineChannel.h" |
#include "EngineChannel.h" |
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#include "../../common/global_private.h" |
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namespace LinuxSampler { namespace gig { |
namespace LinuxSampler { namespace gig { |
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EngineChannel::EngineChannel() { |
EngineChannel::EngineChannel() { |
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pEngine = NULL; |
pEngine = NULL; |
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pInstrument = NULL; |
pInstrument = NULL; |
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pEvents = NULL; // we allocate when we retrieve the right Engine object |
pEvents = NULL; // we allocate when we retrieve the right Engine object |
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pEventQueue = new RingBuffer<Event>(CONFIG_MAX_EVENTS_PER_FRAGMENT, 0); |
pEventQueue = new RingBuffer<Event,false>(CONFIG_MAX_EVENTS_PER_FRAGMENT, 0); |
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pActiveKeys = new Pool<uint>(128); |
pActiveKeys = new Pool<uint>(128); |
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for (uint i = 0; i < 128; i++) { |
for (uint i = 0; i < 128; i++) { |
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pMIDIKeyInfo[i].pActiveVoices = NULL; // we allocate when we retrieve the right Engine object |
pMIDIKeyInfo[i].pActiveVoices = NULL; // we allocate when we retrieve the right Engine object |
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} |
} |
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InstrumentIdx = -1; |
InstrumentIdx = -1; |
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InstrumentStat = -1; |
InstrumentStat = -1; |
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pChannelLeft = NULL; |
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pChannelRight = NULL; |
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AudioDeviceChannelLeft = -1; |
AudioDeviceChannelLeft = -1; |
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AudioDeviceChannelRight = -1; |
AudioDeviceChannelRight = -1; |
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pMidiInputPort = NULL; |
pMidiInputPort = NULL; |
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if (pEventQueue) delete pEventQueue; |
if (pEventQueue) delete pEventQueue; |
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if (pActiveKeys) delete pActiveKeys; |
if (pActiveKeys) delete pActiveKeys; |
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if (pMIDIKeyInfo) delete[] pMIDIKeyInfo; |
if (pMIDIKeyInfo) delete[] pMIDIKeyInfo; |
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RemoveAllFxSends(); |
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} |
} |
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/** |
/** |
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* This method will then actually start to load the instrument and block |
* This method will then actually start to load the instrument and block |
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* the calling thread until loading was completed. |
* the calling thread until loading was completed. |
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* |
* |
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* @returns detailed description of the method call result |
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* @see PrepareLoadInstrument() |
* @see PrepareLoadInstrument() |
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*/ |
*/ |
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void EngineChannel::LoadInstrument() { |
void EngineChannel::LoadInstrument() { |
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::gig::Instrument* oldInstrument = pInstrument; |
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if (pEngine) pEngine->DisableAndLock(); |
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ResetInternal(); |
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// free old instrument |
// free old instrument |
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if (pInstrument) { |
if (oldInstrument) { |
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// give old instrument back to instrument manager |
if (pEngine) { |
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Engine::instruments.HandBack(pInstrument, this); |
// make sure we don't trigger any new notes with the |
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// old instrument |
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::gig::DimensionRegion** dimRegionsInUse = pEngine->ChangeInstrument(this, 0); |
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// give old instrument back to instrument manager, but |
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// keep the dimension regions and samples that are in |
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// use |
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Engine::instruments.HandBackInstrument(oldInstrument, this, dimRegionsInUse); |
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} else { |
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Engine::instruments.HandBack(oldInstrument, this); |
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} |
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} |
} |
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// delete all key groups |
// delete all key groups |
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ActiveKeyGroups.clear(); |
ActiveKeyGroups.clear(); |
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// request gig instrument from instrument manager |
// request gig instrument from instrument manager |
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::gig::Instrument* newInstrument; |
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try { |
try { |
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InstrumentManager::instrument_id_t instrid; |
InstrumentManager::instrument_id_t instrid; |
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instrid.FileName = InstrumentFile; |
instrid.FileName = InstrumentFile; |
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instrid.Index = InstrumentIdx; |
instrid.Index = InstrumentIdx; |
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pInstrument = Engine::instruments.Borrow(instrid, this); |
newInstrument = Engine::instruments.Borrow(instrid, this); |
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if (!pInstrument) { |
if (!newInstrument) { |
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InstrumentStat = -1; |
throw InstrumentManagerException("resource was not created"); |
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dmsg(1,("no instrument loaded!!!\n")); |
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exit(EXIT_FAILURE); |
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} |
} |
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} |
} |
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catch (RIFF::Exception e) { |
catch (RIFF::Exception e) { |
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InstrumentStat = -2; |
InstrumentStat = -2; |
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StatusChanged(true); |
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String msg = "gig::Engine error: Failed to load instrument, cause: " + e.Message; |
String msg = "gig::Engine error: Failed to load instrument, cause: " + e.Message; |
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throw Exception(msg); |
throw Exception(msg); |
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} |
} |
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catch (InstrumentResourceManagerException e) { |
catch (InstrumentManagerException e) { |
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InstrumentStat = -3; |
InstrumentStat = -3; |
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StatusChanged(true); |
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String msg = "gig::Engine error: Failed to load instrument, cause: " + e.Message(); |
String msg = "gig::Engine error: Failed to load instrument, cause: " + e.Message(); |
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throw Exception(msg); |
throw Exception(msg); |
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} |
} |
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catch (...) { |
catch (...) { |
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InstrumentStat = -4; |
InstrumentStat = -4; |
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StatusChanged(true); |
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throw Exception("gig::Engine error: Failed to load instrument, cause: Unknown exception while trying to parse gig file."); |
throw Exception("gig::Engine error: Failed to load instrument, cause: Unknown exception while trying to parse gig file."); |
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} |
} |
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// rebuild ActiveKeyGroups map with key groups of current instrument |
// rebuild ActiveKeyGroups map with key groups of current instrument |
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for (::gig::Region* pRegion = pInstrument->GetFirstRegion(); pRegion; pRegion = pInstrument->GetNextRegion()) |
for (::gig::Region* pRegion = newInstrument->GetFirstRegion(); pRegion; pRegion = newInstrument->GetNextRegion()) |
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if (pRegion->KeyGroup) ActiveKeyGroups[pRegion->KeyGroup] = NULL; |
if (pRegion->KeyGroup) ActiveKeyGroups[pRegion->KeyGroup] = NULL; |
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InstrumentIdxName = pInstrument->pInfo->Name; |
InstrumentIdxName = newInstrument->pInfo->Name; |
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InstrumentStat = 100; |
InstrumentStat = 100; |
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// inform audio driver for the need of two channels |
if (pEngine) pEngine->ChangeInstrument(this, newInstrument); |
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try { |
else pInstrument = newInstrument; |
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if (pEngine && pEngine->pAudioOutputDevice) |
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pEngine->pAudioOutputDevice->AcquireChannels(2); // gig Engine only stereo |
StatusChanged(true); |
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} |
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catch (AudioOutputException e) { |
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String msg = "Audio output device unable to provide 2 audio channels, cause: " + e.Message(); |
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throw Exception(msg); |
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} |
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if (pEngine) pEngine->Enable(); |
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} |
} |
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/** |
/** |
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} |
} |
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AudioDeviceChannelLeft = 0; |
AudioDeviceChannelLeft = 0; |
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AudioDeviceChannelRight = 1; |
AudioDeviceChannelRight = 1; |
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pOutputLeft = pAudioOut->Channel(0)->Buffer(); |
if (fxSends.empty()) { // render directly into the AudioDevice's output buffers |
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pOutputRight = pAudioOut->Channel(1)->Buffer(); |
pChannelLeft = pAudioOut->Channel(AudioDeviceChannelLeft); |
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pChannelRight = pAudioOut->Channel(AudioDeviceChannelRight); |
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} else { // use local buffers for rendering and copy later |
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// ensure the local buffers have the correct size |
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if (pChannelLeft) delete pChannelLeft; |
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if (pChannelRight) delete pChannelRight; |
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pChannelLeft = new AudioChannel(0, pAudioOut->MaxSamplesPerCycle()); |
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pChannelRight = new AudioChannel(1, pAudioOut->MaxSamplesPerCycle()); |
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} |
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if (pEngine->EngineDisabled.GetUnsafe()) pEngine->Enable(); |
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MidiInputPort::AddSysexListener(pEngine); |
MidiInputPort::AddSysexListener(pEngine); |
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} |
} |
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Engine::FreeEngine(this, oldAudioDevice); |
Engine::FreeEngine(this, oldAudioDevice); |
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AudioDeviceChannelLeft = -1; |
AudioDeviceChannelLeft = -1; |
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AudioDeviceChannelRight = -1; |
AudioDeviceChannelRight = -1; |
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if (!fxSends.empty()) { // free the local rendering buffers |
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if (pChannelLeft) delete pChannelLeft; |
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if (pChannelRight) delete pChannelRight; |
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} |
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pChannelLeft = NULL; |
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pChannelRight = NULL; |
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} |
} |
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} |
} |
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AudioOutputDevice* EngineChannel::GetAudioOutputDevice() { |
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return (pEngine) ? pEngine->pAudioOutputDevice : NULL; |
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} |
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void EngineChannel::SetOutputChannel(uint EngineAudioChannel, uint AudioDeviceChannel) { |
void EngineChannel::SetOutputChannel(uint EngineAudioChannel, uint AudioDeviceChannel) { |
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if (!pEngine || !pEngine->pAudioOutputDevice) throw AudioOutputException("No audio output device connected yet."); |
if (!pEngine || !pEngine->pAudioOutputDevice) throw AudioOutputException("No audio output device connected yet."); |
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if (!pChannel) throw AudioOutputException("Invalid audio output device channel " + ToString(AudioDeviceChannel)); |
if (!pChannel) throw AudioOutputException("Invalid audio output device channel " + ToString(AudioDeviceChannel)); |
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switch (EngineAudioChannel) { |
switch (EngineAudioChannel) { |
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case 0: // left output channel |
case 0: // left output channel |
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pOutputLeft = pChannel->Buffer(); |
if (fxSends.empty()) pChannelLeft = pChannel; |
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AudioDeviceChannelLeft = AudioDeviceChannel; |
AudioDeviceChannelLeft = AudioDeviceChannel; |
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break; |
break; |
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case 1: // right output channel |
case 1: // right output channel |
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pOutputRight = pChannel->Buffer(); |
if (fxSends.empty()) pChannelRight = pChannel; |
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AudioDeviceChannelRight = AudioDeviceChannel; |
AudioDeviceChannelRight = AudioDeviceChannel; |
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break; |
break; |
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default: |
default: |
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throw AudioOutputException("Invalid engine audio channel " + ToString(EngineAudioChannel)); |
throw AudioOutputException("Invalid engine audio channel " + ToString(EngineAudioChannel)); |
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} |
} |
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bStatusChanged = true; |
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} |
} |
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int EngineChannel::OutputChannel(uint EngineAudioChannel) { |
int EngineChannel::OutputChannel(uint EngineAudioChannel) { |
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return midiChannel; |
return midiChannel; |
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} |
} |
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FxSend* EngineChannel::AddFxSend(uint8_t MidiCtrl, String Name) throw (Exception) { |
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if (pEngine) pEngine->DisableAndLock(); |
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FxSend* pFxSend = new FxSend(this, MidiCtrl, Name); |
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if (fxSends.empty()) { |
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if (pEngine && pEngine->pAudioOutputDevice) { |
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AudioOutputDevice* pDevice = pEngine->pAudioOutputDevice; |
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// create local render buffers |
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pChannelLeft = new AudioChannel(0, pDevice->MaxSamplesPerCycle()); |
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pChannelRight = new AudioChannel(1, pDevice->MaxSamplesPerCycle()); |
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} else { |
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// postpone local render buffer creation until audio device is assigned |
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pChannelLeft = NULL; |
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pChannelRight = NULL; |
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} |
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} |
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fxSends.push_back(pFxSend); |
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if (pEngine) pEngine->Enable(); |
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fireFxSendCountChanged(iSamplerChannelIndex, GetFxSendCount()); |
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return pFxSend; |
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} |
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FxSend* EngineChannel::GetFxSend(uint FxSendIndex) { |
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return (FxSendIndex < fxSends.size()) ? fxSends[FxSendIndex] : NULL; |
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} |
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uint EngineChannel::GetFxSendCount() { |
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return fxSends.size(); |
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} |
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void EngineChannel::RemoveFxSend(FxSend* pFxSend) { |
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if (pEngine) pEngine->DisableAndLock(); |
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for ( |
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std::vector<FxSend*>::iterator iter = fxSends.begin(); |
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iter != fxSends.end(); iter++ |
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) { |
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if (*iter == pFxSend) { |
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delete pFxSend; |
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fxSends.erase(iter); |
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if (fxSends.empty()) { |
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// destroy local render buffers |
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if (pChannelLeft) delete pChannelLeft; |
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if (pChannelRight) delete pChannelRight; |
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// fallback to render directly into AudioOutputDevice's buffers |
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if (pEngine && pEngine->pAudioOutputDevice) { |
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pChannelLeft = pEngine->pAudioOutputDevice->Channel(AudioDeviceChannelLeft); |
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pChannelRight = pEngine->pAudioOutputDevice->Channel(AudioDeviceChannelRight); |
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} else { // we update the pointers later |
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pChannelLeft = NULL; |
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pChannelRight = NULL; |
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} |
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} |
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break; |
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} |
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} |
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if (pEngine) pEngine->Enable(); |
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fireFxSendCountChanged(iSamplerChannelIndex, GetFxSendCount()); |
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} |
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/** |
/** |
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* Will be called by the MIDIIn Thread to let the audio thread trigger a new |
* Will be called by the MIDIIn Thread to let the audio thread trigger a new |
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* voice for the given key. This method is meant for real time rendering, |
* voice for the given key. This method is meant for real time rendering, |
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Pitch = 0; |
Pitch = 0; |
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SustainPedal = false; |
SustainPedal = false; |
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SostenutoPedal = false; |
SostenutoPedal = false; |
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GlobalVolume = CONFIG_GLOBAL_ATTENUATION; |
GlobalVolume = 1.0f; |
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MidiVolume = 1.0; |
MidiVolume = 1.0; |
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GlobalPanLeft = 1.0f; |
GlobalPanLeft = 1.0f; |
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GlobalPanRight = 1.0f; |
GlobalPanRight = 1.0f; |
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GlobalTranspose = 0; |
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// set all MIDI controller values to zero |
// set all MIDI controller values to zero |
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memset(ControllerTable, 0x00, 129); |
memset(ControllerTable, 0x00, 129); |
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// reset all FX Send levels |
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for ( |
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std::vector<FxSend*>::iterator iter = fxSends.begin(); |
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iter != fxSends.end(); iter++ |
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) { |
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(*iter)->Reset(); |
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} |
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} |
} |
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/** |
/** |
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* current audio cycle |
* current audio cycle |
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*/ |
*/ |
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void EngineChannel::ImportEvents(uint Samples) { |
void EngineChannel::ImportEvents(uint Samples) { |
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RingBuffer<Event>::NonVolatileReader eventQueueReader = pEventQueue->get_non_volatile_reader(); |
RingBuffer<Event,false>::NonVolatileReader eventQueueReader = pEventQueue->get_non_volatile_reader(); |
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Event* pEvent; |
Event* pEvent; |
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while (true) { |
while (true) { |
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// get next event from input event queue |
// get next event from input event queue |
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eventQueueReader.free(); // free all copied events from input queue |
eventQueueReader.free(); // free all copied events from input queue |
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} |
} |
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void EngineChannel::RemoveAllFxSends() { |
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if (pEngine) pEngine->DisableAndLock(); |
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if (!fxSends.empty()) { // free local render buffers |
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if (pChannelLeft) { |
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delete pChannelLeft; |
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if (pEngine && pEngine->pAudioOutputDevice) { |
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// fallback to render directly to the AudioOutputDevice's buffer |
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pChannelLeft = pEngine->pAudioOutputDevice->Channel(AudioDeviceChannelLeft); |
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} else pChannelLeft = NULL; |
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} |
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if (pChannelRight) { |
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delete pChannelRight; |
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if (pEngine && pEngine->pAudioOutputDevice) { |
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// fallback to render directly to the AudioOutputDevice's buffer |
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pChannelRight = pEngine->pAudioOutputDevice->Channel(AudioDeviceChannelRight); |
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} else pChannelRight = NULL; |
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} |
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} |
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for (int i = 0; i < fxSends.size(); i++) delete fxSends[i]; |
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fxSends.clear(); |
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if (pEngine) pEngine->Enable(); |
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} |
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float EngineChannel::Volume() { |
float EngineChannel::Volume() { |
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return GlobalVolume; |
return GlobalVolume; |
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} |
} |