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/*************************************************************************** |
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* * |
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* LinuxSampler - modular, streaming capable sampler * |
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* * |
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* Copyright (C) 2003,2004 by Benno Senoner and Christian Schoenebeck * |
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* Copyright (C) 2005-2008 Christian Schoenebeck * |
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* Copyright (C) 2009-2012 Christian Schoenebeck and Grigor Iliev * |
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* * |
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* 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 * |
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* the Free Software Foundation; either version 2 of the License, or * |
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* (at your option) any later version. * |
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* * |
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* This program is distributed in the hope that it will be useful, * |
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* but WITHOUT ANY WARRANTY; without even the implied warranty of * |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * |
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* GNU General Public License for more details. * |
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* * |
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* You should have received a copy of the GNU General Public License * |
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* along with this program; if not, write to the Free Software * |
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, * |
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* MA 02111-1307 USA * |
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***************************************************************************/ |
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|
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#include "AbstractEngineChannel.h" |
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#include "../common/global_private.h" |
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#include "../Sampler.h" |
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|
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namespace LinuxSampler { |
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|
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AbstractEngineChannel::AbstractEngineChannel() : |
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virtualMidiDevicesReader_AudioThread(virtualMidiDevices), |
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virtualMidiDevicesReader_MidiThread(virtualMidiDevices) |
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{ |
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pEngine = NULL; |
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pEvents = NULL; // we allocate when we retrieve the right Engine object |
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pEventQueue = new RingBuffer<Event,false>(CONFIG_MAX_EVENTS_PER_FRAGMENT, 0); |
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InstrumentIdx = -1; |
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InstrumentStat = -1; |
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pChannelLeft = NULL; |
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pChannelRight = NULL; |
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AudioDeviceChannelLeft = -1; |
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AudioDeviceChannelRight = -1; |
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pMidiInputPort = NULL; |
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midiChannel = midi_chan_all; |
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ResetControllers(); |
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PortamentoMode = false; |
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PortamentoTime = CONFIG_PORTAMENTO_TIME_DEFAULT; |
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} |
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|
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AbstractEngineChannel::~AbstractEngineChannel() { |
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delete pEventQueue; |
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DeleteGroupEventLists(); |
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RemoveAllFxSends(); |
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} |
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|
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Engine* AbstractEngineChannel::GetEngine() { |
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return pEngine; |
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} |
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|
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uint AbstractEngineChannel::Channels() { |
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return 2; |
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} |
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|
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/** |
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* More or less a workaround to set the instrument name, index and load |
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* status variable to zero percent immediately, that is without blocking |
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* the calling thread. It might be used in future for other preparations |
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* as well though. |
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* |
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* @param FileName - file name of the instrument file |
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* @param Instrument - index of the instrument in the file |
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* @see LoadInstrument() |
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*/ |
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void AbstractEngineChannel::PrepareLoadInstrument(const char* FileName, uint Instrument) { |
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InstrumentFile = FileName; |
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InstrumentIdx = Instrument; |
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InstrumentStat = 0; |
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} |
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|
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String AbstractEngineChannel::InstrumentFileName() { |
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return InstrumentFile; |
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} |
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|
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String AbstractEngineChannel::InstrumentName() { |
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return InstrumentIdxName; |
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} |
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|
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int AbstractEngineChannel::InstrumentIndex() { |
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return InstrumentIdx; |
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} |
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|
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int AbstractEngineChannel::InstrumentStatus() { |
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return InstrumentStat; |
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} |
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|
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String AbstractEngineChannel::EngineName() { |
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return AbstractEngine::GetFormatString(GetEngineFormat()); |
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} |
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|
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void AbstractEngineChannel::Reset() { |
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if (pEngine) pEngine->DisableAndLock(); |
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ResetInternal(); |
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ResetControllers(); |
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if (pEngine) { |
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pEngine->Enable(); |
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pEngine->Reset(); |
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} |
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} |
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|
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void AbstractEngineChannel::ResetControllers() { |
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Pitch = 0; |
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GlobalVolume = 1.0f; |
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MidiVolume = 1.0; |
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GlobalPanLeft = 1.0f; |
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GlobalPanRight = 1.0f; |
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iLastPanRequest = 64; |
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GlobalTranspose = 0; |
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// set all MIDI controller values to zero |
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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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/** |
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* This method is not thread safe! |
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*/ |
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void AbstractEngineChannel::ResetInternal() { |
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CurrentKeyDimension = 0; |
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PortamentoPos = -1.0f; // no portamento active yet |
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|
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// delete all input events |
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pEventQueue->init(); |
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|
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if (pEngine) pEngine->ResetInternal(); |
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|
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// status of engine channel has changed, so set notify flag |
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bStatusChanged = true; |
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} |
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|
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/** |
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* Implementation of virtual method from abstract EngineChannel interface. |
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* This method will periodically be polled (e.g. by the LSCP server) to |
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* check if some engine channel parameter has changed since the last |
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* StatusChanged() call. |
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* |
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* This method can also be used to mark the engine channel as changed |
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* from outside, e.g. by a MIDI input device. The optional argument |
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* \a nNewStatus can be used for this. |
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* |
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* TODO: This "poll method" is just a lazy solution and might be |
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* replaced in future. |
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* @param bNewStatus - (optional, default: false) sets the new status flag |
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* @returns true if engine channel status has changed since last |
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* StatusChanged() call |
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*/ |
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bool AbstractEngineChannel::StatusChanged(bool bNewStatus) { |
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bool b = bStatusChanged; |
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bStatusChanged = bNewStatus; |
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return b; |
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} |
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|
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float AbstractEngineChannel::Volume() { |
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return GlobalVolume; |
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} |
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|
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void AbstractEngineChannel::Volume(float f) { |
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GlobalVolume = f; |
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bStatusChanged = true; // status of engine channel has changed, so set notify flag |
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} |
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|
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float AbstractEngineChannel::Pan() { |
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return float(iLastPanRequest - 64) / 64.0f; |
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} |
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|
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void AbstractEngineChannel::Pan(float f) { |
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int iMidiPan = int(f * 64.0f) + 64; |
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if (iMidiPan > 127) iMidiPan = 127; |
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else if (iMidiPan < 0) iMidiPan = 0; |
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GlobalPanLeft = AbstractEngine::PanCurve[128 - iMidiPan]; |
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GlobalPanRight = AbstractEngine::PanCurve[iMidiPan]; |
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iLastPanRequest = iMidiPan; |
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} |
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|
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AudioOutputDevice* AbstractEngineChannel::GetAudioOutputDevice() { |
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return (pEngine) ? pEngine->pAudioOutputDevice : NULL; |
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} |
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|
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/** |
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* Gets thread safe access to the currently connected audio output |
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* device from other threads than the lscp thread. |
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*/ |
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AudioOutputDevice* AbstractEngineChannel::GetAudioOutputDeviceSafe() { |
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EngineMutex.Lock(); |
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AudioOutputDevice* res = GetAudioOutputDevice(); |
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EngineMutex.Unlock(); |
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return res; |
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} |
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|
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void AbstractEngineChannel::SetOutputChannel(uint EngineAudioChannel, uint AudioDeviceChannel) { |
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if (!pEngine || !pEngine->pAudioOutputDevice) throw AudioOutputException("No audio output device connected yet."); |
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|
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AudioChannel* pChannel = pEngine->pAudioOutputDevice->Channel(AudioDeviceChannel); |
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if (!pChannel) throw AudioOutputException("Invalid audio output device channel " + ToString(AudioDeviceChannel)); |
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switch (EngineAudioChannel) { |
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case 0: // left output channel |
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if (fxSends.empty()) pChannelLeft = pChannel; |
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AudioDeviceChannelLeft = AudioDeviceChannel; |
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break; |
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case 1: // right output channel |
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if (fxSends.empty()) pChannelRight = pChannel; |
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AudioDeviceChannelRight = AudioDeviceChannel; |
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break; |
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default: |
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throw AudioOutputException("Invalid engine audio channel " + ToString(EngineAudioChannel)); |
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} |
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|
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bStatusChanged = true; |
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} |
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|
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int AbstractEngineChannel::OutputChannel(uint EngineAudioChannel) { |
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switch (EngineAudioChannel) { |
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case 0: // left channel |
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return AudioDeviceChannelLeft; |
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case 1: // right channel |
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return AudioDeviceChannelRight; |
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default: |
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throw AudioOutputException("Invalid engine audio channel " + ToString(EngineAudioChannel)); |
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} |
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} |
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|
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void AbstractEngineChannel::Connect(MidiInputPort* pMidiPort, midi_chan_t MidiChannel) { |
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if (!pMidiPort || pMidiPort == this->pMidiInputPort) return; |
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DisconnectMidiInputPort(); |
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this->pMidiInputPort = pMidiPort; |
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this->midiChannel = MidiChannel; |
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pMidiPort->Connect(this, MidiChannel); |
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} |
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|
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void AbstractEngineChannel::DisconnectMidiInputPort() { |
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MidiInputPort* pOldPort = this->pMidiInputPort; |
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this->pMidiInputPort = NULL; |
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if (pOldPort) pOldPort->Disconnect(this); |
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} |
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|
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MidiInputPort* AbstractEngineChannel::GetMidiInputPort() { |
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return pMidiInputPort; |
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} |
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|
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midi_chan_t AbstractEngineChannel::MidiChannel() { |
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return midiChannel; |
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} |
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|
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void AbstractEngineChannel::Connect(VirtualMidiDevice* pDevice) { |
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// double buffer ... double work ... |
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{ |
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ArrayList<VirtualMidiDevice*>& devices = virtualMidiDevices.GetConfigForUpdate(); |
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devices.add(pDevice); |
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} |
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{ |
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ArrayList<VirtualMidiDevice*>& devices = virtualMidiDevices.SwitchConfig(); |
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devices.add(pDevice); |
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} |
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} |
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|
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void AbstractEngineChannel::Disconnect(VirtualMidiDevice* pDevice) { |
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// double buffer ... double work ... |
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{ |
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ArrayList<VirtualMidiDevice*>& devices = virtualMidiDevices.GetConfigForUpdate(); |
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devices.remove(pDevice); |
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} |
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{ |
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ArrayList<VirtualMidiDevice*>& devices = virtualMidiDevices.SwitchConfig(); |
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devices.remove(pDevice); |
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} |
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} |
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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 |
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* voice for the given key. This method is meant for real time rendering, |
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* that is an event will immediately be created with the current system |
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* time as time stamp. |
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* |
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* @param Key - MIDI key number of the triggered key |
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* @param Velocity - MIDI velocity value of the triggered key |
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*/ |
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void AbstractEngineChannel::SendNoteOn(uint8_t Key, uint8_t Velocity, uint8_t MidiChannel) { |
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if (pEngine) { |
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Event event = pEngine->pEventGenerator->CreateEvent(); |
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event.Type = Event::type_note_on; |
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event.Param.Note.Key = Key; |
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event.Param.Note.Velocity = Velocity; |
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event.Param.Note.Channel = MidiChannel; |
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event.pEngineChannel = this; |
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if (this->pEventQueue->write_space() > 0) this->pEventQueue->push(&event); |
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else dmsg(1,("EngineChannel: Input event queue full!")); |
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// inform connected virtual MIDI devices if any ... |
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// (e.g. virtual MIDI keyboard in instrument editor(s)) |
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ArrayList<VirtualMidiDevice*>& devices = |
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const_cast<ArrayList<VirtualMidiDevice*>&>( |
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virtualMidiDevicesReader_MidiThread.Lock() |
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); |
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for (int i = 0; i < devices.size(); i++) { |
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devices[i]->SendNoteOnToDevice(Key, Velocity); |
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} |
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virtualMidiDevicesReader_MidiThread.Unlock(); |
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} |
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} |
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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 |
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* voice for the given key. This method is meant for offline rendering |
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* and / or for cases where the exact position of the event in the current |
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* audio fragment is already known. |
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* |
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* @param Key - MIDI key number of the triggered key |
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* @param Velocity - MIDI velocity value of the triggered key |
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* @param FragmentPos - sample point position in the current audio |
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* fragment to which this event belongs to |
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*/ |
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void AbstractEngineChannel::SendNoteOn(uint8_t Key, uint8_t Velocity, uint8_t MidiChannel, int32_t FragmentPos) { |
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if (FragmentPos < 0) { |
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dmsg(1,("EngineChannel::SendNoteOn(): negative FragmentPos! Seems MIDI driver is buggy!")); |
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} |
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else if (pEngine) { |
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Event event = pEngine->pEventGenerator->CreateEvent(FragmentPos); |
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event.Type = Event::type_note_on; |
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event.Param.Note.Key = Key; |
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event.Param.Note.Velocity = Velocity; |
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event.Param.Note.Channel = MidiChannel; |
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event.pEngineChannel = this; |
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if (this->pEventQueue->write_space() > 0) this->pEventQueue->push(&event); |
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else dmsg(1,("EngineChannel: Input event queue full!")); |
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// inform connected virtual MIDI devices if any ... |
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// (e.g. virtual MIDI keyboard in instrument editor(s)) |
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ArrayList<VirtualMidiDevice*>& devices = |
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const_cast<ArrayList<VirtualMidiDevice*>&>( |
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virtualMidiDevicesReader_MidiThread.Lock() |
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); |
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for (int i = 0; i < devices.size(); i++) { |
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devices[i]->SendNoteOnToDevice(Key, Velocity); |
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} |
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virtualMidiDevicesReader_MidiThread.Unlock(); |
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} |
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} |
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|
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/** |
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* Will be called by the MIDIIn Thread to signal the audio thread to release |
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* voice(s) on the given key. This method is meant for real time rendering, |
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* that is an event will immediately be created with the current system |
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* time as time stamp. |
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* |
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* @param Key - MIDI key number of the released key |
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* @param Velocity - MIDI release velocity value of the released key |
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*/ |
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void AbstractEngineChannel::SendNoteOff(uint8_t Key, uint8_t Velocity, uint8_t MidiChannel) { |
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if (pEngine) { |
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Event event = pEngine->pEventGenerator->CreateEvent(); |
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event.Type = Event::type_note_off; |
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event.Param.Note.Key = Key; |
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event.Param.Note.Velocity = Velocity; |
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event.Param.Note.Channel = MidiChannel; |
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event.pEngineChannel = this; |
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if (this->pEventQueue->write_space() > 0) this->pEventQueue->push(&event); |
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else dmsg(1,("EngineChannel: Input event queue full!")); |
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// inform connected virtual MIDI devices if any ... |
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// (e.g. virtual MIDI keyboard in instrument editor(s)) |
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ArrayList<VirtualMidiDevice*>& devices = |
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const_cast<ArrayList<VirtualMidiDevice*>&>( |
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virtualMidiDevicesReader_MidiThread.Lock() |
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); |
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for (int i = 0; i < devices.size(); i++) { |
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devices[i]->SendNoteOffToDevice(Key, Velocity); |
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} |
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virtualMidiDevicesReader_MidiThread.Unlock(); |
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} |
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} |
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|
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/** |
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* Will be called by the MIDIIn Thread to signal the audio thread to release |
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* voice(s) on the given key. This method is meant for offline rendering |
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* and / or for cases where the exact position of the event in the current |
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* audio fragment is already known. |
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* |
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* @param Key - MIDI key number of the released key |
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* @param Velocity - MIDI release velocity value of the released key |
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* @param FragmentPos - sample point position in the current audio |
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* fragment to which this event belongs to |
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*/ |
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void AbstractEngineChannel::SendNoteOff(uint8_t Key, uint8_t Velocity, uint8_t MidiChannel, int32_t FragmentPos) { |
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if (FragmentPos < 0) { |
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dmsg(1,("EngineChannel::SendNoteOff(): negative FragmentPos! Seems MIDI driver is buggy!")); |
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} |
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else if (pEngine) { |
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Event event = pEngine->pEventGenerator->CreateEvent(FragmentPos); |
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event.Type = Event::type_note_off; |
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event.Param.Note.Key = Key; |
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event.Param.Note.Velocity = Velocity; |
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event.Param.Note.Channel = MidiChannel; |
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event.pEngineChannel = this; |
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if (this->pEventQueue->write_space() > 0) this->pEventQueue->push(&event); |
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else dmsg(1,("EngineChannel: Input event queue full!")); |
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// inform connected virtual MIDI devices if any ... |
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// (e.g. virtual MIDI keyboard in instrument editor(s)) |
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ArrayList<VirtualMidiDevice*>& devices = |
411 |
const_cast<ArrayList<VirtualMidiDevice*>&>( |
412 |
virtualMidiDevicesReader_MidiThread.Lock() |
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); |
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for (int i = 0; i < devices.size(); i++) { |
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devices[i]->SendNoteOffToDevice(Key, Velocity); |
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} |
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virtualMidiDevicesReader_MidiThread.Unlock(); |
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} |
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} |
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|
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/** |
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* Will be called by the MIDIIn Thread to signal the audio thread to change |
423 |
* the pitch value for all voices. This method is meant for real time |
424 |
* rendering, that is an event will immediately be created with the |
425 |
* current system time as time stamp. |
426 |
* |
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* @param Pitch - MIDI pitch value (-8192 ... +8191) |
428 |
*/ |
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void AbstractEngineChannel::SendPitchbend(int Pitch, uint8_t MidiChannel) { |
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if (pEngine) { |
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Event event = pEngine->pEventGenerator->CreateEvent(); |
432 |
event.Type = Event::type_pitchbend; |
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event.Param.Pitch.Pitch = Pitch; |
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event.Param.Pitch.Channel = MidiChannel; |
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event.pEngineChannel = this; |
436 |
if (this->pEventQueue->write_space() > 0) this->pEventQueue->push(&event); |
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else dmsg(1,("EngineChannel: Input event queue full!")); |
438 |
} |
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} |
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|
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/** |
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* Will be called by the MIDIIn Thread to signal the audio thread to change |
443 |
* the pitch value for all voices. This method is meant for offline |
444 |
* rendering and / or for cases where the exact position of the event in |
445 |
* the current audio fragment is already known. |
446 |
* |
447 |
* @param Pitch - MIDI pitch value (-8192 ... +8191) |
448 |
* @param FragmentPos - sample point position in the current audio |
449 |
* fragment to which this event belongs to |
450 |
*/ |
451 |
void AbstractEngineChannel::SendPitchbend(int Pitch, uint8_t MidiChannel, int32_t FragmentPos) { |
452 |
if (FragmentPos < 0) { |
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dmsg(1,("AbstractEngineChannel::SendPitchBend(): negative FragmentPos! Seems MIDI driver is buggy!")); |
454 |
} |
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else if (pEngine) { |
456 |
Event event = pEngine->pEventGenerator->CreateEvent(FragmentPos); |
457 |
event.Type = Event::type_pitchbend; |
458 |
event.Param.Pitch.Pitch = Pitch; |
459 |
event.Param.Pitch.Channel = MidiChannel; |
460 |
event.pEngineChannel = this; |
461 |
if (this->pEventQueue->write_space() > 0) this->pEventQueue->push(&event); |
462 |
else dmsg(1,("AbstractEngineChannel: Input event queue full!")); |
463 |
} |
464 |
} |
465 |
|
466 |
/** |
467 |
* Will be called by the MIDIIn Thread to signal the audio thread that a |
468 |
* continuous controller value has changed. This method is meant for real |
469 |
* time rendering, that is an event will immediately be created with the |
470 |
* current system time as time stamp. |
471 |
* |
472 |
* @param Controller - MIDI controller number of the occured control change |
473 |
* @param Value - value of the control change |
474 |
*/ |
475 |
void AbstractEngineChannel::SendControlChange(uint8_t Controller, uint8_t Value, uint8_t MidiChannel) { |
476 |
if (pEngine) { |
477 |
Event event = pEngine->pEventGenerator->CreateEvent(); |
478 |
event.Type = Event::type_control_change; |
479 |
event.Param.CC.Controller = Controller; |
480 |
event.Param.CC.Value = Value; |
481 |
event.Param.CC.Channel = MidiChannel; |
482 |
event.pEngineChannel = this; |
483 |
if (this->pEventQueue->write_space() > 0) this->pEventQueue->push(&event); |
484 |
else dmsg(1,("AbstractEngineChannel: Input event queue full!")); |
485 |
} |
486 |
} |
487 |
|
488 |
/** |
489 |
* Will be called by the MIDIIn Thread to signal the audio thread that a |
490 |
* continuous controller value has changed. This method is meant for |
491 |
* offline rendering and / or for cases where the exact position of the |
492 |
* event in the current audio fragment is already known. |
493 |
* |
494 |
* @param Controller - MIDI controller number of the occured control change |
495 |
* @param Value - value of the control change |
496 |
* @param FragmentPos - sample point position in the current audio |
497 |
* fragment to which this event belongs to |
498 |
*/ |
499 |
void AbstractEngineChannel::SendControlChange(uint8_t Controller, uint8_t Value, uint8_t MidiChannel, int32_t FragmentPos) { |
500 |
if (FragmentPos < 0) { |
501 |
dmsg(1,("AbstractEngineChannel::SendControlChange(): negative FragmentPos! Seems MIDI driver is buggy!")); |
502 |
} |
503 |
else if (pEngine) { |
504 |
Event event = pEngine->pEventGenerator->CreateEvent(FragmentPos); |
505 |
event.Type = Event::type_control_change; |
506 |
event.Param.CC.Controller = Controller; |
507 |
event.Param.CC.Value = Value; |
508 |
event.Param.CC.Channel = MidiChannel; |
509 |
event.pEngineChannel = this; |
510 |
if (this->pEventQueue->write_space() > 0) this->pEventQueue->push(&event); |
511 |
else dmsg(1,("AbstractEngineChannel: Input event queue full!")); |
512 |
} |
513 |
} |
514 |
|
515 |
/** |
516 |
* Copy all events from the engine channel's input event queue buffer to |
517 |
* the internal event list. This will be done at the beginning of each |
518 |
* audio cycle (that is each RenderAudio() call) to distinguish all |
519 |
* events which have to be processed in the current audio cycle. Each |
520 |
* EngineChannel has it's own input event queue for the common channel |
521 |
* specific events (like NoteOn, NoteOff and ControlChange events). |
522 |
* Beside that, the engine also has a input event queue for global |
523 |
* events (usually SysEx messages). |
524 |
* |
525 |
* @param Samples - number of sample points to be processed in the |
526 |
* current audio cycle |
527 |
*/ |
528 |
void AbstractEngineChannel::ImportEvents(uint Samples) { |
529 |
// import events from pure software MIDI "devices" |
530 |
// (e.g. virtual keyboard in instrument editor) |
531 |
{ |
532 |
const uint8_t channel = MidiChannel() == midi_chan_all ? 0 : MidiChannel(); |
533 |
const int FragmentPos = 0; // randomly chosen, we don't care about jitter for virtual MIDI devices |
534 |
Event event = pEngine->pEventGenerator->CreateEvent(FragmentPos); |
535 |
VirtualMidiDevice::event_t devEvent; // the event format we get from the virtual MIDI device |
536 |
// as we're going to (carefully) write some status to the |
537 |
// synchronized struct, we cast away the const |
538 |
ArrayList<VirtualMidiDevice*>& devices = |
539 |
const_cast<ArrayList<VirtualMidiDevice*>&>(virtualMidiDevicesReader_AudioThread.Lock()); |
540 |
// iterate through all virtual MIDI devices |
541 |
for (int i = 0; i < devices.size(); i++) { |
542 |
VirtualMidiDevice* pDev = devices[i]; |
543 |
// I think we can simply flush the whole FIFO(s), the user shouldn't be so fast ;-) |
544 |
while (pDev->GetMidiEventFromDevice(devEvent)) { |
545 |
switch (devEvent.Type) { |
546 |
case VirtualMidiDevice::EVENT_TYPE_NOTEON: |
547 |
event.Type = Event::type_note_on; |
548 |
event.Param.Note.Key = devEvent.Arg1; |
549 |
event.Param.Note.Velocity = devEvent.Arg2; |
550 |
event.Param.Note.Channel = channel; |
551 |
break; |
552 |
case VirtualMidiDevice::EVENT_TYPE_NOTEOFF: |
553 |
event.Type = Event::type_note_off; |
554 |
event.Param.Note.Key = devEvent.Arg1; |
555 |
event.Param.Note.Velocity = devEvent.Arg2; |
556 |
event.Param.Note.Channel = channel; |
557 |
break; |
558 |
case VirtualMidiDevice::EVENT_TYPE_CC: |
559 |
event.Type = Event::type_control_change; |
560 |
event.Param.CC.Controller = devEvent.Arg1; |
561 |
event.Param.CC.Value = devEvent.Arg2; |
562 |
event.Param.CC.Channel = channel; |
563 |
break; |
564 |
default: |
565 |
std::cerr << "AbstractEngineChannel::ImportEvents() ERROR: unknown event type (" |
566 |
<< devEvent.Type << "). This is a bug!"; |
567 |
continue; |
568 |
} |
569 |
event.pEngineChannel = this; |
570 |
// copy event to internal event list |
571 |
if (pEvents->poolIsEmpty()) { |
572 |
dmsg(1,("Event pool emtpy!\n")); |
573 |
goto exitVirtualDevicesLoop; |
574 |
} |
575 |
*pEvents->allocAppend() = event; |
576 |
} |
577 |
} |
578 |
} |
579 |
exitVirtualDevicesLoop: |
580 |
virtualMidiDevicesReader_AudioThread.Unlock(); |
581 |
|
582 |
// import events from the regular MIDI devices |
583 |
RingBuffer<Event,false>::NonVolatileReader eventQueueReader = pEventQueue->get_non_volatile_reader(); |
584 |
Event* pEvent; |
585 |
while (true) { |
586 |
// get next event from input event queue |
587 |
if (!(pEvent = eventQueueReader.pop())) break; |
588 |
// if younger event reached, ignore that and all subsequent ones for now |
589 |
if (pEvent->FragmentPos() >= Samples) { |
590 |
eventQueueReader--; |
591 |
dmsg(2,("Younger Event, pos=%d ,Samples=%d!\n",pEvent->FragmentPos(),Samples)); |
592 |
pEvent->ResetFragmentPos(); |
593 |
break; |
594 |
} |
595 |
// copy event to internal event list |
596 |
if (pEvents->poolIsEmpty()) { |
597 |
dmsg(1,("Event pool emtpy!\n")); |
598 |
break; |
599 |
} |
600 |
*pEvents->allocAppend() = *pEvent; |
601 |
} |
602 |
eventQueueReader.free(); // free all copied events from input queue |
603 |
} |
604 |
|
605 |
FxSend* AbstractEngineChannel::AddFxSend(uint8_t MidiCtrl, String Name) throw (Exception) { |
606 |
if (pEngine) pEngine->DisableAndLock(); |
607 |
FxSend* pFxSend = new FxSend(this, MidiCtrl, Name); |
608 |
if (fxSends.empty()) { |
609 |
if (pEngine && pEngine->pAudioOutputDevice) { |
610 |
AudioOutputDevice* pDevice = pEngine->pAudioOutputDevice; |
611 |
// create local render buffers |
612 |
pChannelLeft = new AudioChannel(0, pDevice->MaxSamplesPerCycle()); |
613 |
pChannelRight = new AudioChannel(1, pDevice->MaxSamplesPerCycle()); |
614 |
} else { |
615 |
// postpone local render buffer creation until audio device is assigned |
616 |
pChannelLeft = NULL; |
617 |
pChannelRight = NULL; |
618 |
} |
619 |
} |
620 |
fxSends.push_back(pFxSend); |
621 |
if (pEngine) pEngine->Enable(); |
622 |
fireFxSendCountChanged(GetSamplerChannel()->Index(), GetFxSendCount()); |
623 |
|
624 |
return pFxSend; |
625 |
} |
626 |
|
627 |
FxSend* AbstractEngineChannel::GetFxSend(uint FxSendIndex) { |
628 |
return (FxSendIndex < fxSends.size()) ? fxSends[FxSendIndex] : NULL; |
629 |
} |
630 |
|
631 |
uint AbstractEngineChannel::GetFxSendCount() { |
632 |
return fxSends.size(); |
633 |
} |
634 |
|
635 |
void AbstractEngineChannel::RemoveFxSend(FxSend* pFxSend) { |
636 |
if (pEngine) pEngine->DisableAndLock(); |
637 |
for ( |
638 |
std::vector<FxSend*>::iterator iter = fxSends.begin(); |
639 |
iter != fxSends.end(); iter++ |
640 |
) { |
641 |
if (*iter == pFxSend) { |
642 |
delete pFxSend; |
643 |
fxSends.erase(iter); |
644 |
if (fxSends.empty()) { |
645 |
// destroy local render buffers |
646 |
if (pChannelLeft) delete pChannelLeft; |
647 |
if (pChannelRight) delete pChannelRight; |
648 |
// fallback to render directly into AudioOutputDevice's buffers |
649 |
if (pEngine && pEngine->pAudioOutputDevice) { |
650 |
pChannelLeft = pEngine->pAudioOutputDevice->Channel(AudioDeviceChannelLeft); |
651 |
pChannelRight = pEngine->pAudioOutputDevice->Channel(AudioDeviceChannelRight); |
652 |
} else { // we update the pointers later |
653 |
pChannelLeft = NULL; |
654 |
pChannelRight = NULL; |
655 |
} |
656 |
} |
657 |
break; |
658 |
} |
659 |
} |
660 |
if (pEngine) pEngine->Enable(); |
661 |
fireFxSendCountChanged(GetSamplerChannel()->Index(), GetFxSendCount()); |
662 |
} |
663 |
|
664 |
void AbstractEngineChannel::RemoveAllFxSends() { |
665 |
if (pEngine) pEngine->DisableAndLock(); |
666 |
if (!fxSends.empty()) { // free local render buffers |
667 |
if (pChannelLeft) { |
668 |
delete pChannelLeft; |
669 |
if (pEngine && pEngine->pAudioOutputDevice) { |
670 |
// fallback to render directly to the AudioOutputDevice's buffer |
671 |
pChannelLeft = pEngine->pAudioOutputDevice->Channel(AudioDeviceChannelLeft); |
672 |
} else pChannelLeft = NULL; |
673 |
} |
674 |
if (pChannelRight) { |
675 |
delete pChannelRight; |
676 |
if (pEngine && pEngine->pAudioOutputDevice) { |
677 |
// fallback to render directly to the AudioOutputDevice's buffer |
678 |
pChannelRight = pEngine->pAudioOutputDevice->Channel(AudioDeviceChannelRight); |
679 |
} else pChannelRight = NULL; |
680 |
} |
681 |
} |
682 |
for (int i = 0; i < fxSends.size(); i++) delete fxSends[i]; |
683 |
fxSends.clear(); |
684 |
if (pEngine) pEngine->Enable(); |
685 |
} |
686 |
|
687 |
/** |
688 |
* Add a group number to the set of key groups. Should be called |
689 |
* when an instrument is loaded to make sure there are event lists |
690 |
* for all key groups. |
691 |
*/ |
692 |
void AbstractEngineChannel::AddGroup(uint group) { |
693 |
if (group) { |
694 |
std::pair<ActiveKeyGroupMap::iterator, bool> p = |
695 |
ActiveKeyGroups.insert(ActiveKeyGroupMap::value_type(group, 0)); |
696 |
if (p.second) { |
697 |
// If the engine channel is pending deletion (see bug |
698 |
// #113), pEngine will be null, so we can't use |
699 |
// pEngine->pEventPool here. Instead we're using a |
700 |
// specialized RTList that allows specifying the pool |
701 |
// later. |
702 |
(*p.first).second = new LazyList<Event>; |
703 |
} |
704 |
} |
705 |
} |
706 |
|
707 |
/** |
708 |
* Handle key group (a.k.a. exclusive group) conflicts. |
709 |
*/ |
710 |
void AbstractEngineChannel::HandleKeyGroupConflicts(uint KeyGroup, Pool<Event>::Iterator& itNoteOnEvent) { |
711 |
dmsg(4,("HandelKeyGroupConflicts KeyGroup=%d\n", KeyGroup)); |
712 |
if (KeyGroup) { |
713 |
// send a release event to all active voices in the group |
714 |
RTList<Event>::Iterator itEvent = ActiveKeyGroups[KeyGroup]->allocAppend(pEngine->pEventPool); |
715 |
*itEvent = *itNoteOnEvent; |
716 |
} |
717 |
} |
718 |
|
719 |
/** |
720 |
* Empty the lists of group events. Should be called from the |
721 |
* audio thread, after all voices have been rendered. |
722 |
*/ |
723 |
void AbstractEngineChannel::ClearGroupEventLists() { |
724 |
for (ActiveKeyGroupMap::iterator iter = ActiveKeyGroups.begin(); |
725 |
iter != ActiveKeyGroups.end(); iter++) { |
726 |
if (iter->second) { |
727 |
iter->second->clear(); |
728 |
} else { |
729 |
dmsg(1,("EngineChannel: group event list was NULL")); |
730 |
} |
731 |
} |
732 |
} |
733 |
|
734 |
/** |
735 |
* Remove all lists with group events. |
736 |
*/ |
737 |
void AbstractEngineChannel::DeleteGroupEventLists() { |
738 |
for (ActiveKeyGroupMap::iterator iter = ActiveKeyGroups.begin(); |
739 |
iter != ActiveKeyGroups.end(); iter++) { |
740 |
delete iter->second; |
741 |
} |
742 |
ActiveKeyGroups.clear(); |
743 |
} |
744 |
|
745 |
} // namespace LinuxSampler |