--- linuxsampler/trunk/src/engines/gig/EngineChannel.cpp 2005/03/03 03:25:17 420 +++ linuxsampler/trunk/src/engines/gig/EngineChannel.cpp 2005/08/16 17:14:25 738 @@ -23,13 +23,14 @@ #include "EngineChannel.h" -namespace LinuxSampler { namespace gig { +namespace LinuxSampler { namespace gig { EngineChannel::EngineChannel() { 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 @@ -37,46 +38,64 @@ 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(); } 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; 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) @@ -87,6 +106,7 @@ pMIDIKeyInfo[i].Active = false; pMIDIKeyInfo[i].ReleaseTrigger = false; pMIDIKeyInfo[i].itSelf = Pool::Iterator(); + pMIDIKeyInfo[i].VoiceTheftsQueued = 0; } // reset all key groups @@ -100,6 +120,9 @@ pEventQueue->init(); if (pEngine) pEngine->ResetInternal(); + + // status of engine channel has changed, so set notify flag + bStatusChanged = true; } LinuxSampler::Engine* EngineChannel::GetEngine() { @@ -134,9 +157,9 @@ void EngineChannel::LoadInstrument() { if (pEngine) pEngine->DisableAndLock(); - + ResetInternal(); - + // free old instrument if (pInstrument) { // give old instrument back to instrument manager @@ -195,8 +218,8 @@ /** * 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")); @@ -212,14 +235,29 @@ 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(); + 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); @@ -233,6 +271,10 @@ 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; @@ -248,13 +290,13 @@ pEngine = NULL; Engine::FreeEngine(this, oldAudioDevice); AudioDeviceChannelLeft = -1; - AudioDeviceChannelRight = -1; + AudioDeviceChannelRight = -1; } } void EngineChannel::SetOutputChannel(uint EngineAudioChannel, uint AudioDeviceChannel) { if (!pEngine || !pEngine->pAudioOutputDevice) throw AudioOutputException("No audio output device connected yet."); - + AudioChannel* pChannel = pEngine->pAudioOutputDevice->Channel(AudioDeviceChannel); if (!pChannel) throw AudioOutputException("Invalid audio output device channel " + ToString(AudioDeviceChannel)); switch (EngineAudioChannel) { @@ -282,6 +324,28 @@ } } + 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. @@ -295,7 +359,7 @@ event.Type = Event::type_note_on; event.Param.Note.Key = Key; event.Param.Note.Velocity = Velocity; - event.pEngineChannel = this; + event.pEngineChannel = this; if (this->pEventQueue->write_space() > 0) this->pEventQueue->push(&event); else dmsg(1,("EngineChannel: Input event queue full!")); } @@ -327,7 +391,7 @@ * @param Pitch - MIDI pitch value (-8192 ... +8191) */ void EngineChannel::SendPitchbend(int Pitch) { - if (pEngine) { + if (pEngine) { Event event = pEngine->pEventGenerator->CreateEvent(); event.Type = Event::type_pitchbend; event.Param.Pitch.Pitch = Pitch; @@ -356,12 +420,71 @@ } } + 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; + GlobalVolume = 1.0; + GlobalPanLeft = 1.0f; + GlobalPanRight = 1.0f; + // set all MIDI controller values to zero + memset(ControllerTable, 0x00, 128); + } + + /** + * 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() { @@ -382,6 +505,10 @@ int EngineChannel::InstrumentStatus() { return InstrumentStat; - } + } + + String EngineChannel::EngineName() { + return LS_GIG_ENGINE_NAME; + } }} // namespace LinuxSampler::gig