--- linuxsampler/trunk/src/engines/gig/EngineChannel.cpp 2005/03/09 22:12:15 438 +++ linuxsampler/trunk/src/engines/gig/EngineChannel.cpp 2006/12/06 22:28:17 970 @@ -3,7 +3,7 @@ * LinuxSampler - modular, streaming capable sampler * * * * Copyright (C) 2003, 2004 by Benno Senoner and Christian Schoenebeck * - * Copyright (C) 2005 Christian Schoenebeck * + * Copyright (C) 2005, 2006 Christian Schoenebeck * * * * This program is free software; you can redistribute it and/or modify * * it under the terms of the GNU General Public License as published by * @@ -29,7 +29,8 @@ pMIDIKeyInfo = new midi_key_info_t[128]; pEngine = NULL; pInstrument = NULL; - pEventQueue = new RingBuffer(MAX_EVENTS_PER_FRAGMENT, 0); + pEvents = NULL; // we allocate when we retrieve the right Engine object + pEventQueue = new RingBuffer(CONFIG_MAX_EVENTS_PER_FRAGMENT, 0); pActiveKeys = new Pool(128); for (uint i = 0; i < 128; i++) { pMIDIKeyInfo[i].pActiveVoices = NULL; // we allocate when we retrieve the right Engine object @@ -37,49 +38,67 @@ pMIDIKeyInfo[i].Active = false; pMIDIKeyInfo[i].ReleaseTrigger = false; pMIDIKeyInfo[i].pEvents = NULL; // we allocate when we retrieve the right Engine object + pMIDIKeyInfo[i].VoiceTheftsQueued = 0; pMIDIKeyInfo[i].RoundRobinIndex = 0; } InstrumentIdx = -1; InstrumentStat = -1; AudioDeviceChannelLeft = -1; AudioDeviceChannelRight = -1; + pMidiInputPort = NULL; + midiChannel = midi_chan_all; + ResetControllers(); + SoloMode = false; + PortamentoMode = false; + PortamentoTime = CONFIG_PORTAMENTO_TIME_DEFAULT; } EngineChannel::~EngineChannel() { + DisconnectAudioOutputDevice(); if (pInstrument) Engine::instruments.HandBack(pInstrument, this); - for (uint i = 0; i < 128; i++) { - if (pMIDIKeyInfo[i].pActiveVoices) { - pMIDIKeyInfo[i].pActiveVoices->clear(); - delete pMIDIKeyInfo[i].pActiveVoices; - } - if (pMIDIKeyInfo[i].pEvents) { - pMIDIKeyInfo[i].pEvents->clear(); - delete pMIDIKeyInfo[i].pEvents; - } - } if (pEventQueue) delete pEventQueue; if (pActiveKeys) delete pActiveKeys; if (pMIDIKeyInfo) delete[] pMIDIKeyInfo; } /** + * Implementation of virtual method from abstract EngineChannel interface. + * This method will periodically be polled (e.g. by the LSCP server) to + * check if some engine channel parameter has changed since the last + * StatusChanged() call. + * + * This method can also be used to mark the engine channel as changed + * from outside, e.g. by a MIDI input device. The optional argument + * \a nNewStatus can be used for this. + * + * TODO: This "poll method" is just a lazy solution and might be + * replaced in future. + * @param bNewStatus - (optional, default: false) sets the new status flag + * @returns true if engine channel status has changed since last + * StatusChanged() call + */ + bool EngineChannel::StatusChanged(bool bNewStatus) { + bool b = bStatusChanged; + bStatusChanged = bNewStatus; + return b; + } + + void EngineChannel::Reset() { + if (pEngine) pEngine->DisableAndLock(); + ResetInternal(); + ResetControllers(); + if (pEngine) { + pEngine->Enable(); + pEngine->Reset(); + } + } + + /** * This method is not thread safe! */ void EngineChannel::ResetInternal() { - Pitch = 0; - SustainPedal = false; - GlobalVolume = 1.0; - GlobalPanLeft = 1.0f; - GlobalPanRight = 1.0f; CurrentKeyDimension = 0; - // set all MIDI controller values to zero - memset(ControllerTable, 0x00, 128); - - // reset voice stealing parameters - itLastStolenVoice = RTList::Iterator(); - iuiLastStolenKey = RTList::Iterator(); - // reset key info for (uint i = 0; i < 128; i++) { if (pMIDIKeyInfo[i].pActiveVoices) @@ -90,7 +109,10 @@ pMIDIKeyInfo[i].Active = false; pMIDIKeyInfo[i].ReleaseTrigger = false; pMIDIKeyInfo[i].itSelf = Pool::Iterator(); + pMIDIKeyInfo[i].VoiceTheftsQueued = 0; } + SoloKey = -1; // no solo key active yet + PortamentoPos = -1.0f; // no portamento active yet // reset all key groups std::map::iterator iter = ActiveKeyGroups.begin(); @@ -103,6 +125,9 @@ pEventQueue->init(); if (pEngine) pEngine->ResetInternal(); + + // status of engine channel has changed, so set notify flag + bStatusChanged = true; } LinuxSampler::Engine* EngineChannel::GetEngine() { @@ -151,9 +176,9 @@ // request gig instrument from instrument manager try { - instrument_id_t instrid; - instrid.FileName = InstrumentFile; - instrid.iInstrument = InstrumentIdx; + InstrumentManager::instrument_id_t instrid; + instrid.FileName = InstrumentFile; + instrid.Index = InstrumentIdx; pInstrument = Engine::instruments.Borrow(instrid, this); if (!pInstrument) { InstrumentStat = -1; @@ -164,16 +189,16 @@ catch (RIFF::Exception e) { InstrumentStat = -2; String msg = "gig::Engine error: Failed to load instrument, cause: " + e.Message; - throw LinuxSamplerException(msg); + throw Exception(msg); } catch (InstrumentResourceManagerException e) { InstrumentStat = -3; String msg = "gig::Engine error: Failed to load instrument, cause: " + e.Message(); - throw LinuxSamplerException(msg); + throw Exception(msg); } catch (...) { InstrumentStat = -4; - throw LinuxSamplerException("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."); } // rebuild ActiveKeyGroups map with key groups of current instrument @@ -190,7 +215,7 @@ } catch (AudioOutputException e) { String msg = "Audio output device unable to provide 2 audio channels, cause: " + e.Message(); - throw LinuxSamplerException(msg); + throw Exception(msg); } if (pEngine) pEngine->Enable(); @@ -198,8 +223,8 @@ /** * Will be called by the InstrumentResourceManager when the instrument - * we are currently using in this engine is going to be updated, so we - * can stop playback before that happens. + * we are currently using on this EngineChannel is going to be updated, + * so we can stop playback before that happens. */ void EngineChannel::ResourceToBeUpdated(::gig::Instrument* pResource, void*& pUpdateArg) { dmsg(3,("gig::Engine: Received instrument update message.\n")); @@ -215,14 +240,29 @@ void EngineChannel::ResourceUpdated(::gig::Instrument* pOldResource, ::gig::Instrument* pNewResource, void* pUpdateArg) { this->pInstrument = pNewResource; //TODO: there are couple of engine parameters we should update here as well if the instrument was updated (see LoadInstrument()) if (pEngine) pEngine->Enable(); + bStatusChanged = true; // status of engine has changed, so set notify flag + } + + /** + * Will be called by the InstrumentResourceManager on progress changes + * while loading or realoading an instrument for this EngineChannel. + * + * @param fProgress - current progress as value between 0.0 and 1.0 + */ + void EngineChannel::OnResourceProgress(float fProgress) { + this->InstrumentStat = int(fProgress * 100.0f); + dmsg(7,("gig::EngineChannel: progress %d%", InstrumentStat)); + bStatusChanged = true; // status of engine has changed, so set notify flag } void EngineChannel::Connect(AudioOutputDevice* pAudioOut) { - if (pEngine && pEngine->pAudioOutputDevice != pAudioOut) { + if (pEngine) { + if (pEngine->pAudioOutputDevice == pAudioOut) return; DisconnectAudioOutputDevice(); } pEngine = Engine::AcquireEngine(this, pAudioOut); ResetInternal(); + pEvents = new RTList(pEngine->pEventPool); for (uint i = 0; i < 128; i++) { pMIDIKeyInfo[i].pActiveVoices = new RTList(pEngine->pVoicePool); pMIDIKeyInfo[i].pEvents = new RTList(pEngine->pEventPool); @@ -231,11 +271,16 @@ AudioDeviceChannelRight = 1; pOutputLeft = pAudioOut->Channel(0)->Buffer(); pOutputRight = pAudioOut->Channel(1)->Buffer(); + MidiInputPort::AddSysexListener(pEngine); } void EngineChannel::DisconnectAudioOutputDevice() { if (pEngine) { // if clause to prevent disconnect loops ResetInternal(); + if (pEvents) { + delete pEvents; + pEvents = NULL; + } for (uint i = 0; i < 128; i++) { if (pMIDIKeyInfo[i].pActiveVoices) { delete pMIDIKeyInfo[i].pActiveVoices; @@ -285,9 +330,33 @@ } } + void EngineChannel::Connect(MidiInputPort* pMidiPort, midi_chan_t MidiChannel) { + if (!pMidiPort || pMidiPort == this->pMidiInputPort) return; + DisconnectMidiInputPort(); + this->pMidiInputPort = pMidiPort; + this->midiChannel = MidiChannel; + pMidiPort->Connect(this, MidiChannel); + } + + void EngineChannel::DisconnectMidiInputPort() { + MidiInputPort* pOldPort = this->pMidiInputPort; + this->pMidiInputPort = NULL; + if (pOldPort) pOldPort->Disconnect(this); + } + + MidiInputPort* EngineChannel::GetMidiInputPort() { + return pMidiInputPort; + } + + midi_chan_t EngineChannel::MidiChannel() { + return midiChannel; + } + /** * Will be called by the MIDIIn Thread to let the audio thread trigger a new - * voice for the given key. + * voice for the given key. This method is meant for real time rendering, + * that is an event will immediately be created with the current system + * time as time stamp. * * @param Key - MIDI key number of the triggered key * @param Velocity - MIDI velocity value of the triggered key @@ -305,8 +374,36 @@ } /** + * Will be called by the MIDIIn Thread to let the audio thread trigger a new + * voice for the given key. This method is meant for offline rendering + * and / or for cases where the exact position of the event in the current + * audio fragment is already known. + * + * @param Key - MIDI key number of the triggered key + * @param Velocity - MIDI velocity value of the triggered key + * @param FragmentPos - sample point position in the current audio + * fragment to which this event belongs to + */ + void EngineChannel::SendNoteOn(uint8_t Key, uint8_t Velocity, int32_t FragmentPos) { + if (FragmentPos < 0) { + dmsg(1,("EngineChannel::SendNoteOn(): negative FragmentPos! Seems MIDI driver is buggy!")); + } + else if (pEngine) { + Event event = pEngine->pEventGenerator->CreateEvent(FragmentPos); + event.Type = Event::type_note_on; + event.Param.Note.Key = Key; + event.Param.Note.Velocity = Velocity; + event.pEngineChannel = this; + if (this->pEventQueue->write_space() > 0) this->pEventQueue->push(&event); + else dmsg(1,("EngineChannel: Input event queue full!")); + } + } + + /** * Will be called by the MIDIIn Thread to signal the audio thread to release - * voice(s) on the given key. + * voice(s) on the given key. This method is meant for real time rendering, + * that is an event will immediately be created with the current system + * time as time stamp. * * @param Key - MIDI key number of the released key * @param Velocity - MIDI release velocity value of the released key @@ -324,8 +421,36 @@ } /** + * Will be called by the MIDIIn Thread to signal the audio thread to release + * voice(s) on the given key. This method is meant for offline rendering + * and / or for cases where the exact position of the event in the current + * audio fragment is already known. + * + * @param Key - MIDI key number of the released key + * @param Velocity - MIDI release velocity value of the released key + * @param FragmentPos - sample point position in the current audio + * fragment to which this event belongs to + */ + void EngineChannel::SendNoteOff(uint8_t Key, uint8_t Velocity, int32_t FragmentPos) { + if (FragmentPos < 0) { + dmsg(1,("EngineChannel::SendNoteOff(): negative FragmentPos! Seems MIDI driver is buggy!")); + } + else if (pEngine) { + Event event = pEngine->pEventGenerator->CreateEvent(FragmentPos); + event.Type = Event::type_note_off; + event.Param.Note.Key = Key; + event.Param.Note.Velocity = Velocity; + event.pEngineChannel = this; + if (this->pEventQueue->write_space() > 0) this->pEventQueue->push(&event); + else dmsg(1,("EngineChannel: Input event queue full!")); + } + } + + /** * Will be called by the MIDIIn Thread to signal the audio thread to change - * the pitch value for all voices. + * the pitch value for all voices. This method is meant for real time + * rendering, that is an event will immediately be created with the + * current system time as time stamp. * * @param Pitch - MIDI pitch value (-8192 ... +8191) */ @@ -341,8 +466,34 @@ } /** + * Will be called by the MIDIIn Thread to signal the audio thread to change + * the pitch value for all voices. This method is meant for offline + * rendering and / or for cases where the exact position of the event in + * the current audio fragment is already known. + * + * @param Pitch - MIDI pitch value (-8192 ... +8191) + * @param FragmentPos - sample point position in the current audio + * fragment to which this event belongs to + */ + void EngineChannel::SendPitchbend(int Pitch, int32_t FragmentPos) { + if (FragmentPos < 0) { + dmsg(1,("EngineChannel::SendPitchBend(): negative FragmentPos! Seems MIDI driver is buggy!")); + } + else if (pEngine) { + Event event = pEngine->pEventGenerator->CreateEvent(FragmentPos); + event.Type = Event::type_pitchbend; + event.Param.Pitch.Pitch = Pitch; + event.pEngineChannel = this; + if (this->pEventQueue->write_space() > 0) this->pEventQueue->push(&event); + else dmsg(1,("EngineChannel: Input event queue full!")); + } + } + + /** * Will be called by the MIDIIn Thread to signal the audio thread that a - * continuous controller value has changed. + * continuous controller value has changed. This method is meant for real + * time rendering, that is an event will immediately be created with the + * current system time as time stamp. * * @param Controller - MIDI controller number of the occured control change * @param Value - value of the control change @@ -359,12 +510,99 @@ } } + /** + * Will be called by the MIDIIn Thread to signal the audio thread that a + * continuous controller value has changed. This method is meant for + * offline rendering and / or for cases where the exact position of the + * event in the current audio fragment is already known. + * + * @param Controller - MIDI controller number of the occured control change + * @param Value - value of the control change + * @param FragmentPos - sample point position in the current audio + * fragment to which this event belongs to + */ + void EngineChannel::SendControlChange(uint8_t Controller, uint8_t Value, int32_t FragmentPos) { + if (FragmentPos < 0) { + dmsg(1,("EngineChannel::SendControlChange(): negative FragmentPos! Seems MIDI driver is buggy!")); + } + else if (pEngine) { + Event event = pEngine->pEventGenerator->CreateEvent(FragmentPos); + event.Type = Event::type_control_change; + event.Param.CC.Controller = Controller; + event.Param.CC.Value = Value; + event.pEngineChannel = this; + if (this->pEventQueue->write_space() > 0) this->pEventQueue->push(&event); + else dmsg(1,("EngineChannel: Input event queue full!")); + } + } + + void EngineChannel::ClearEventLists() { + pEvents->clear(); + // empty MIDI key specific event lists + { + RTList::Iterator iuiKey = pActiveKeys->first(); + RTList::Iterator end = pActiveKeys->end(); + for(; iuiKey != end; ++iuiKey) { + pMIDIKeyInfo[*iuiKey].pEvents->clear(); // free all events on the key + } + } + } + + void EngineChannel::ResetControllers() { + Pitch = 0; + SustainPedal = false; + SostenutoPedal = false; + GlobalVolume = CONFIG_GLOBAL_ATTENUATION; + MidiVolume = 1.0; + GlobalPanLeft = 1.0f; + GlobalPanRight = 1.0f; + // set all MIDI controller values to zero + memset(ControllerTable, 0x00, 129); + } + + /** + * Copy all events from the engine channel's input event queue buffer to + * the internal event list. This will be done at the beginning of each + * audio cycle (that is each RenderAudio() call) to distinguish all + * events which have to be processed in the current audio cycle. Each + * EngineChannel has it's own input event queue for the common channel + * specific events (like NoteOn, NoteOff and ControlChange events). + * Beside that, the engine also has a input event queue for global + * events (usually SysEx messages). + * + * @param Samples - number of sample points to be processed in the + * current audio cycle + */ + void EngineChannel::ImportEvents(uint Samples) { + RingBuffer::NonVolatileReader eventQueueReader = pEventQueue->get_non_volatile_reader(); + Event* pEvent; + while (true) { + // get next event from input event queue + if (!(pEvent = eventQueueReader.pop())) break; + // if younger event reached, ignore that and all subsequent ones for now + if (pEvent->FragmentPos() >= Samples) { + eventQueueReader--; + dmsg(2,("Younger Event, pos=%d ,Samples=%d!\n",pEvent->FragmentPos(),Samples)); + pEvent->ResetFragmentPos(); + break; + } + // copy event to internal event list + if (pEvents->poolIsEmpty()) { + dmsg(1,("Event pool emtpy!\n")); + break; + } + *pEvents->allocAppend() = *pEvent; + } + eventQueueReader.free(); // free all copied events from input queue + } + float EngineChannel::Volume() { return GlobalVolume; } void EngineChannel::Volume(float f) { GlobalVolume = f; + bStatusChanged = true; // status of engine channel has changed, so set notify flag } uint EngineChannel::Channels() { @@ -387,4 +625,8 @@ return InstrumentStat; } + String EngineChannel::EngineName() { + return LS_GIG_ENGINE_NAME; + } + }} // namespace LinuxSampler::gig