--- linuxsampler/trunk/src/engines/gig/EngineChannel.cpp 2006/07/22 14:22:53 903 +++ linuxsampler/trunk/src/engines/gig/EngineChannel.cpp 2007/02/03 15:33:00 1038 @@ -30,7 +30,7 @@ pEngine = NULL; pInstrument = NULL; pEvents = NULL; // we allocate when we retrieve the right Engine object - pEventQueue = new RingBuffer(CONFIG_MAX_EVENTS_PER_FRAGMENT, 0); + 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 @@ -43,6 +43,8 @@ } InstrumentIdx = -1; InstrumentStat = -1; + pChannelLeft = NULL; + pChannelRight = NULL; AudioDeviceChannelLeft = -1; AudioDeviceChannelRight = -1; pMidiInputPort = NULL; @@ -59,6 +61,7 @@ if (pEventQueue) delete pEventQueue; if (pActiveKeys) delete pActiveKeys; if (pMIDIKeyInfo) delete[] pMIDIKeyInfo; + RemoveAllFxSends(); } /** @@ -160,27 +163,35 @@ * @see PrepareLoadInstrument() */ void EngineChannel::LoadInstrument() { - - if (pEngine) pEngine->DisableAndLock(); - - ResetInternal(); + ::gig::Instrument* oldInstrument = pInstrument; // free old instrument - if (pInstrument) { - // give old instrument back to instrument manager - Engine::instruments.HandBack(pInstrument, this); + if (oldInstrument) { + if (pEngine) { + // make sure we don't trigger any new notes with the + // old instrument + ::gig::DimensionRegion** dimRegionsInUse = pEngine->ChangeInstrument(this, 0); + + // give old instrument back to instrument manager, but + // keep the dimension regions and samples that are in + // use + Engine::instruments.HandBackInstrument(oldInstrument, this, dimRegionsInUse); + } else { + Engine::instruments.HandBack(oldInstrument, this); + } } // delete all key groups ActiveKeyGroups.clear(); // request gig instrument from instrument manager + ::gig::Instrument* newInstrument; try { - instrument_id_t instrid; - instrid.FileName = InstrumentFile; - instrid.iInstrument = InstrumentIdx; - pInstrument = Engine::instruments.Borrow(instrid, this); - if (!pInstrument) { + InstrumentManager::instrument_id_t instrid; + instrid.FileName = InstrumentFile; + instrid.Index = InstrumentIdx; + newInstrument = Engine::instruments.Borrow(instrid, this); + if (!newInstrument) { InstrumentStat = -1; dmsg(1,("no instrument loaded!!!\n")); exit(EXIT_FAILURE); @@ -202,23 +213,14 @@ } // rebuild ActiveKeyGroups map with key groups of current instrument - for (::gig::Region* pRegion = pInstrument->GetFirstRegion(); pRegion; pRegion = pInstrument->GetNextRegion()) + for (::gig::Region* pRegion = newInstrument->GetFirstRegion(); pRegion; pRegion = newInstrument->GetNextRegion()) if (pRegion->KeyGroup) ActiveKeyGroups[pRegion->KeyGroup] = NULL; - InstrumentIdxName = pInstrument->pInfo->Name; + InstrumentIdxName = newInstrument->pInfo->Name; InstrumentStat = 100; - // inform audio driver for the need of two channels - try { - if (pEngine && pEngine->pAudioOutputDevice) - pEngine->pAudioOutputDevice->AcquireChannels(2); // gig Engine only stereo - } - catch (AudioOutputException e) { - String msg = "Audio output device unable to provide 2 audio channels, cause: " + e.Message(); - throw Exception(msg); - } - - if (pEngine) pEngine->Enable(); + if (pEngine) pEngine->ChangeInstrument(this, newInstrument); + else pInstrument = newInstrument; } /** @@ -269,8 +271,17 @@ } AudioDeviceChannelLeft = 0; AudioDeviceChannelRight = 1; - pOutputLeft = pAudioOut->Channel(0)->Buffer(); - pOutputRight = pAudioOut->Channel(1)->Buffer(); + if (fxSends.empty()) { // render directly into the AudioDevice's output buffers + pChannelLeft = pAudioOut->Channel(AudioDeviceChannelLeft); + pChannelRight = pAudioOut->Channel(AudioDeviceChannelRight); + } else { // use local buffers for rendering and copy later + // ensure the local buffers have the correct size + if (pChannelLeft) delete pChannelLeft; + if (pChannelRight) delete pChannelRight; + pChannelLeft = new AudioChannel(0, pAudioOut->MaxSamplesPerCycle()); + pChannelRight = new AudioChannel(1, pAudioOut->MaxSamplesPerCycle()); + } + pEngine->Enable(); MidiInputPort::AddSysexListener(pEngine); } @@ -297,9 +308,19 @@ Engine::FreeEngine(this, oldAudioDevice); AudioDeviceChannelLeft = -1; AudioDeviceChannelRight = -1; + if (!fxSends.empty()) { // free the local rendering buffers + if (pChannelLeft) delete pChannelLeft; + if (pChannelRight) delete pChannelRight; + } + pChannelLeft = NULL; + pChannelRight = NULL; } } + AudioOutputDevice* EngineChannel::GetAudioOutputDevice() { + return (pEngine) ? pEngine->pAudioOutputDevice : NULL; + } + void EngineChannel::SetOutputChannel(uint EngineAudioChannel, uint AudioDeviceChannel) { if (!pEngine || !pEngine->pAudioOutputDevice) throw AudioOutputException("No audio output device connected yet."); @@ -307,11 +328,11 @@ if (!pChannel) throw AudioOutputException("Invalid audio output device channel " + ToString(AudioDeviceChannel)); switch (EngineAudioChannel) { case 0: // left output channel - pOutputLeft = pChannel->Buffer(); + if (fxSends.empty()) pChannelLeft = pChannel; AudioDeviceChannelLeft = AudioDeviceChannel; break; case 1: // right output channel - pOutputRight = pChannel->Buffer(); + if (fxSends.empty()) pChannelRight = pChannel; AudioDeviceChannelRight = AudioDeviceChannel; break; default: @@ -352,9 +373,67 @@ return midiChannel; } + FxSend* EngineChannel::AddFxSend(uint8_t MidiCtrl, String Name) throw (Exception) { + if (pEngine) pEngine->DisableAndLock(); + FxSend* pFxSend = new FxSend(this, MidiCtrl, Name); + if (fxSends.empty()) { + if (pEngine && pEngine->pAudioOutputDevice) { + AudioOutputDevice* pDevice = pEngine->pAudioOutputDevice; + // create local render buffers + pChannelLeft = new AudioChannel(0, pDevice->MaxSamplesPerCycle()); + pChannelRight = new AudioChannel(1, pDevice->MaxSamplesPerCycle()); + } else { + // postpone local render buffer creation until audio device is assigned + pChannelLeft = NULL; + pChannelRight = NULL; + } + } + fxSends.push_back(pFxSend); + if (pEngine) pEngine->Enable(); + return pFxSend; + } + + FxSend* EngineChannel::GetFxSend(uint FxSendIndex) { + return (FxSendIndex < fxSends.size()) ? fxSends[FxSendIndex] : NULL; + } + + uint EngineChannel::GetFxSendCount() { + return fxSends.size(); + } + + void EngineChannel::RemoveFxSend(FxSend* pFxSend) { + if (pEngine) pEngine->DisableAndLock(); + for ( + std::vector::iterator iter = fxSends.begin(); + iter != fxSends.end(); iter++ + ) { + if (*iter == pFxSend) { + delete pFxSend; + fxSends.erase(iter); + if (fxSends.empty()) { + // destroy local render buffers + if (pChannelLeft) delete pChannelLeft; + if (pChannelRight) delete pChannelRight; + // fallback to render directly into AudioOutputDevice's buffers + if (pEngine && pEngine->pAudioOutputDevice) { + pChannelLeft = pEngine->pAudioOutputDevice->Channel(AudioDeviceChannelLeft); + pChannelRight = pEngine->pAudioOutputDevice->Channel(AudioDeviceChannelRight); + } else { // we update the pointers later + pChannelLeft = NULL; + pChannelRight = NULL; + } + } + break; + } + } + if (pEngine) pEngine->Enable(); + } + /** * 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 @@ -372,8 +451,36 @@ } /** + * 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 @@ -391,8 +498,36 @@ } /** + * 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) */ @@ -408,8 +543,34 @@ } /** + * 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 @@ -426,6 +587,32 @@ } } + /** + * 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 @@ -442,7 +629,8 @@ Pitch = 0; SustainPedal = false; SostenutoPedal = false; - GlobalVolume = CONFIG_GLOBAL_ATTENUATION; + GlobalVolume = 1.0f; + MidiVolume = 1.0; GlobalPanLeft = 1.0f; GlobalPanRight = 1.0f; // set all MIDI controller values to zero @@ -463,7 +651,7 @@ * current audio cycle */ void EngineChannel::ImportEvents(uint Samples) { - RingBuffer::NonVolatileReader eventQueueReader = pEventQueue->get_non_volatile_reader(); + RingBuffer::NonVolatileReader eventQueueReader = pEventQueue->get_non_volatile_reader(); Event* pEvent; while (true) { // get next event from input event queue @@ -485,6 +673,29 @@ eventQueueReader.free(); // free all copied events from input queue } + void EngineChannel::RemoveAllFxSends() { + if (pEngine) pEngine->DisableAndLock(); + if (!fxSends.empty()) { // free local render buffers + if (pChannelLeft) { + delete pChannelLeft; + if (pEngine && pEngine->pAudioOutputDevice) { + // fallback to render directly to the AudioOutputDevice's buffer + pChannelLeft = pEngine->pAudioOutputDevice->Channel(AudioDeviceChannelLeft); + } else pChannelLeft = NULL; + } + if (pChannelRight) { + delete pChannelRight; + if (pEngine && pEngine->pAudioOutputDevice) { + // fallback to render directly to the AudioOutputDevice's buffer + pChannelRight = pEngine->pAudioOutputDevice->Channel(AudioDeviceChannelRight); + } else pChannelRight = NULL; + } + } + for (int i = 0; i < fxSends.size(); i++) delete fxSends[i]; + fxSends.clear(); + if (pEngine) pEngine->Enable(); + } + float EngineChannel::Volume() { return GlobalVolume; }