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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 by Benno Senoner and Christian Schoenebeck * |
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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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#include "audiothread.h" |
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AudioThread::AudioThread(AudioIO* pAudioIO) { |
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this->pAudioIO = pAudioIO; |
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this->pDiskThread = new DiskThread(((pAudioIO->MaxSamplesPerCycle() << MAX_PITCH) << 1) + 6); //FIXME: assuming stereo |
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this->pInstrument = NULL; |
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this->Pitch = 0; |
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this->SustainPedal = 0; |
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Voice::pDiskThread = this->pDiskThread; |
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Voice::pEngine = this; |
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pEventQueue = new RingBuffer<ModulationSystem::Event>(MAX_EVENTS_PER_FRAGMENT); |
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pEventPool = new RTELMemoryPool<ModulationSystem::Event>(MAX_EVENTS_PER_FRAGMENT); |
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pVoicePool = new RTELMemoryPool<Voice>(MAX_AUDIO_VOICES); |
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pActiveKeys = new RTELMemoryPool<uint>(128); |
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pEvents = new RTEList<ModulationSystem::Event>(pEventPool); |
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pCCEvents = new RTEList<ModulationSystem::Event>(pEventPool); |
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for (uint i = 0; i < ModulationSystem::destination_count; i++) { |
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pSynthesisEvents[i] = new RTEList<ModulationSystem::Event>(pEventPool); |
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} |
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for (uint i = 0; i < 128; i++) { |
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pMIDIKeyInfo[i].pActiveVoices = new RTEList<Voice>(pVoicePool); |
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pMIDIKeyInfo[i].KeyPressed = false; |
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pMIDIKeyInfo[i].Active = false; |
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pMIDIKeyInfo[i].pSelf = NULL; |
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pMIDIKeyInfo[i].pEvents = new RTEList<ModulationSystem::Event>(pEventPool); |
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} |
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// FIXME: assuming stereo output |
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pAudioSumBuffer[0] = new float[pAudioIO->MaxSamplesPerCycle() * pAudioIO->Channels()]; |
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pAudioSumBuffer[1] = &pAudioSumBuffer[0][pAudioIO->MaxSamplesPerCycle()]; |
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// set all voice outputs to the AudioSumBuffer |
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for (Voice* pVoice = pVoicePool->alloc(); pVoice; pVoice = pVoicePool->alloc()) { //FIXME: assuming stereo |
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pVoice->SetOutputLeft(pAudioSumBuffer[0], pAudioIO->MaxSamplesPerCycle()); |
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pVoice->SetOutputRight(pAudioSumBuffer[1], pAudioIO->MaxSamplesPerCycle()); |
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} |
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pVoicePool->clear(); |
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pRIFF = NULL; |
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pGig = NULL; |
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pInstrument = NULL; |
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// initialize modulation system |
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ModulationSystem::Initialize(pAudioIO->SampleRate(), pAudioIO->MaxSamplesPerCycle()); |
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// set all MIDI controller values to zero |
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memset(ControllerTable, 0x00, 128); |
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SuspensionRequested = false; |
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pthread_mutex_init(&__render_state_mutex, NULL); |
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pthread_cond_init(&__render_exit_condition, NULL); |
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dmsg(1,("Starting disk thread...")); |
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pDiskThread->StartThread(); |
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dmsg(1,("OK\n")); |
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} |
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AudioThread::~AudioThread() { |
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if (pDiskThread) { |
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pDiskThread->StopThread(); |
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delete pDiskThread; |
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} |
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if (pGig) delete pGig; |
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if (pRIFF) delete pRIFF; |
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ModulationSystem::Close(); |
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for (uint i = 0; i < 128; i++) { |
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if (pMIDIKeyInfo[i].pActiveVoices) delete pMIDIKeyInfo[i].pActiveVoices; |
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if (pMIDIKeyInfo[i].pEvents) delete pMIDIKeyInfo[i].pEvents; |
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} |
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for (uint i = 0; i < ModulationSystem::destination_count; i++) { |
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if (pSynthesisEvents[i]) delete pSynthesisEvents[i]; |
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} |
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delete[] pSynthesisEvents; |
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if (pEvents) delete pEvents; |
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if (pCCEvents) delete pCCEvents; |
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if (pEventQueue) delete pEventQueue; |
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if (pEventPool) delete pEventPool; |
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if (pVoicePool) delete pVoicePool; |
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if (pActiveKeys) delete pActiveKeys; |
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delete[] pAudioSumBuffer[0]; // this also frees the right channel buffer |
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pthread_cond_destroy(&__render_exit_condition); |
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pthread_mutex_destroy(&__render_state_mutex); |
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} |
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/** |
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* Let this engine proceed to render the given amount of sample points. The |
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* calculated audio data of all voices of this engine will be placed into |
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* the engine's audio sum buffer which has to be copied and eventually be |
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* converted to the appropriate value range by the audio output class (e.g. |
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* AlsaIO or JackIO) right after. |
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* |
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* @param Samples - number of sample points to be rendered |
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* @returns 0 on success |
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*/ |
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int AudioThread::RenderAudio(uint Samples) { |
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// zero out the output sum buffer (left and right channel) |
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memset(pAudioSumBuffer[0], 0, Samples * pAudioIO->Channels() * sizeof(float)); |
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// check if rendering process was requested to be interrupted (e.g. to load another instrument) |
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if (SuspensionRequested) { |
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pthread_cond_broadcast(&__render_exit_condition); // wake up anybody waiting for us |
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return 0; |
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} |
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// empty the event lists for the new fragment |
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pEvents->clear(); |
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pCCEvents->clear(); |
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for (uint i = 0; i < ModulationSystem::destination_count; i++) { |
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pSynthesisEvents[i]->clear(); |
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} |
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// read and copy events from input queue |
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ModulationSystem::Event Event; |
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while (true) { |
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if (!pEventQueue->pop(&Event)) break; |
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pEvents->alloc_assign(Event); |
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} |
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// update time of start and end of this audio fragment (as events' time stamps relate to this) |
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ModulationSystem::UpdateFragmentTime(); |
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// process events |
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ModulationSystem::Event* pNextEvent = pEvents->first(); |
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while (pNextEvent) { |
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ModulationSystem::Event* pEvent = pNextEvent; |
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pEvents->set_current(pEvent); |
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pNextEvent = pEvents->next(); |
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switch (pEvent->Type) { |
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case ModulationSystem::event_type_note_on: |
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dmsg(5,("Audio Thread: Note on received\n")); |
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ProcessNoteOn(pEvent); |
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break; |
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case ModulationSystem::event_type_note_off: |
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dmsg(5,("Audio Thread: Note off received\n")); |
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ProcessNoteOff(pEvent); |
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break; |
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case ModulationSystem::event_type_control_change: |
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dmsg(5,("Audio Thread: MIDI CC received\n")); |
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ProcessControlChange(pEvent); |
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break; |
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case ModulationSystem::event_type_pitchbend: |
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dmsg(5,("Audio Thread: Pitchbend received\n")); |
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ProcessPitchbend(pEvent); |
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break; |
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} |
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} |
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// render audio from all active voices |
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int active_voices = 0; |
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uint* piKey = pActiveKeys->first(); |
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while (piKey) { // iterate through all active keys |
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midi_key_info_t* pKey = &pMIDIKeyInfo[*piKey]; |
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pActiveKeys->set_current(piKey); |
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piKey = pActiveKeys->next(); |
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Voice* pVoiceNext = pKey->pActiveVoices->first(); |
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while (pVoiceNext) { // iterate through all voices on this key |
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// already get next voice on key |
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Voice* pVoice = pVoiceNext; |
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pKey->pActiveVoices->set_current(pVoice); |
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pVoiceNext = pKey->pActiveVoices->next(); |
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// now render current voice |
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pVoice->Render(Samples); |
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if (pVoice->IsActive()) active_voices++; // still active |
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else { // voice reached end, is now inactive |
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KillVoice(pVoice); // remove voice from the list of active voices |
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} |
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} |
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pKey->pEvents->clear(); // free all events on the key |
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} |
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// write that to the disk thread class so that it can print it |
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// on the console for debugging purposes |
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ActiveVoiceCount = active_voices; |
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if (ActiveVoiceCount > ActiveVoiceCountMax) ActiveVoiceCountMax = ActiveVoiceCount; |
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return 0; |
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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. |
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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 AudioThread::SendNoteOn(uint8_t Key, uint8_t Velocity) { |
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ModulationSystem::Event Event; |
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Event.Type = ModulationSystem::event_type_note_on; |
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Event.Key = Key; |
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Event.Velocity = Velocity; |
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if (this->pEventQueue->write_space() > 0) this->pEventQueue->push(&Event); |
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else dmsg(1,("AudioThread: Input event queue full!")); |
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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. |
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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 AudioThread::SendNoteOff(uint8_t Key, uint8_t Velocity) { |
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ModulationSystem::Event Event; |
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Event.Type = ModulationSystem::event_type_note_off; |
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Event.Key = Key; |
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Event.Velocity = Velocity; |
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if (this->pEventQueue->write_space() > 0) this->pEventQueue->push(&Event); |
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else dmsg(1,("AudioThread: Input event queue full!")); |
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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 |
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* the pitch value for all voices. |
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* |
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* @param Pitch - MIDI pitch value (-8192 ... +8191) |
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*/ |
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void AudioThread::SendPitchbend(int Pitch) { |
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ModulationSystem::Event Event; |
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Event.Type = ModulationSystem::event_type_pitchbend; |
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Event.Pitch = Pitch; |
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if (this->pEventQueue->write_space() > 0) this->pEventQueue->push(&Event); |
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else dmsg(1,("AudioThread: Input event queue full!")); |
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} |
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/** |
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* Will be called by the MIDIIn Thread to signal the audio thread that a |
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* continuous controller value has changed. |
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* |
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* @param Controller - MIDI controller number of the occured control change |
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* @param Value - value of the control change |
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*/ |
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void AudioThread::SendControlChange(uint8_t Controller, uint8_t Value) { |
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ModulationSystem::Event Event; |
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Event.Type = ModulationSystem::event_type_control_change; |
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Event.Controller = Controller; |
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Event.Value = Value; |
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if (this->pEventQueue->write_space() > 0) this->pEventQueue->push(&Event); |
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else dmsg(1,("AudioThread: Input event queue full!")); |
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} |
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/** |
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* Assigns and triggers a new voice for the respective MIDI key. |
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* |
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* @param pNoteOnEvent - key, velocity and time stamp of the event |
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*/ |
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void AudioThread::ProcessNoteOn(ModulationSystem::Event* pNoteOnEvent) { |
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midi_key_info_t* pKey = &pMIDIKeyInfo[pNoteOnEvent->Key]; |
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pKey->KeyPressed = true; // the MIDI key was now pressed down |
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// cancel release process of voices on this key if needed |
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if (pKey->Active && !SustainPedal) { |
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pNoteOnEvent->Type = ModulationSystem::event_type_cancel_release; // transform event type |
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pEvents->move(pNoteOnEvent, pKey->pEvents); // move event to the key's own event list |
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} |
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// allocate a new voice for the key |
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Voice* pNewVoice = pKey->pActiveVoices->alloc(); |
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if (pNewVoice) { |
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// launch the new voice |
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if (pNewVoice->Trigger(pNoteOnEvent, this->Pitch, this->pInstrument) < 0) { |
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dmsg(1,("Triggering new voice failed!\n")); |
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pKey->pActiveVoices->free(pNewVoice); |
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} |
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else if (!pKey->Active) { // mark as active key |
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pKey->Active = true; |
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pKey->pSelf = pActiveKeys->alloc(); |
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*pKey->pSelf = pNoteOnEvent->Key; |
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} |
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} |
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else std::cerr << "No free voice!" << std::endl << std::flush; |
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} |
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/** |
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* Releases the voices on the given key if sustain pedal is not pressed. |
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* If sustain is pressed, the release of the note will be postponed until |
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* sustain pedal will be released or voice turned inactive by itself (e.g. |
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* due to completion of sample playback). |
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* |
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* @param pNoteOffEvent - key, velocity and time stamp of the event |
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*/ |
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void AudioThread::ProcessNoteOff(ModulationSystem::Event* pNoteOffEvent) { |
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midi_key_info_t* pKey = &pMIDIKeyInfo[pNoteOffEvent->Key]; |
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pKey->KeyPressed = false; // the MIDI key was now released |
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// release voices on this key if needed |
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if (pKey->Active && !SustainPedal) { |
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pNoteOffEvent->Type = ModulationSystem::event_type_release; // transform event type |
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pEvents->move(pNoteOffEvent, pKey->pEvents); // move event to the key's own event list |
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} |
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} |
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/** |
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* Moves pitchbend event from the general (input) event list to the pitch |
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* event list. |
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* |
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* @param pPitchbendEvent - absolute pitch value and time stamp of the event |
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*/ |
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void AudioThread::ProcessPitchbend(ModulationSystem::Event* pPitchbendEvent) { |
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this->Pitch = pPitchbendEvent->Pitch; // store current pitch value |
334 |
schoenebeck |
37 |
pEvents->move(pPitchbendEvent, pSynthesisEvents[ModulationSystem::destination_vco]); |
335 |
schoenebeck |
32 |
} |
336 |
|
|
|
337 |
|
|
/** |
338 |
schoenebeck |
30 |
* Immediately kills the voice given with pVoice (no matter if sustain is |
339 |
|
|
* pressed or not) and removes it from the MIDI key's list of active voice. |
340 |
schoenebeck |
33 |
* This method will e.g. be called if a voice went inactive by itself. |
341 |
schoenebeck |
32 |
* |
342 |
|
|
* @param pVoice - points to the voice to be killed |
343 |
schoenebeck |
15 |
*/ |
344 |
schoenebeck |
30 |
void AudioThread::KillVoice(Voice* pVoice) { |
345 |
schoenebeck |
9 |
if (pVoice) { |
346 |
schoenebeck |
30 |
if (pVoice->IsActive()) pVoice->Kill(); |
347 |
senoner |
10 |
|
348 |
schoenebeck |
32 |
midi_key_info_t* pKey = &pMIDIKeyInfo[pVoice->MIDIKey]; |
349 |
|
|
|
350 |
|
|
// free the voice object |
351 |
|
|
pVoicePool->free(pVoice); |
352 |
schoenebeck |
15 |
|
353 |
schoenebeck |
18 |
// check if there are no voices left on the MIDI key and update the key info if so |
354 |
schoenebeck |
32 |
if (pKey->pActiveVoices->is_empty()) { |
355 |
schoenebeck |
33 |
pKey->Active = false; |
356 |
|
|
pActiveKeys->free(pKey->pSelf); // remove key from list of active keys |
357 |
|
|
pKey->pSelf = NULL; |
358 |
schoenebeck |
18 |
dmsg(3,("Key has no more voices now\n")); |
359 |
schoenebeck |
15 |
} |
360 |
schoenebeck |
9 |
} |
361 |
schoenebeck |
15 |
else std::cerr << "Couldn't release voice! (pVoice == NULL)\n" << std::flush; |
362 |
schoenebeck |
9 |
} |
363 |
|
|
|
364 |
schoenebeck |
32 |
/** |
365 |
|
|
* Reacts on supported control change commands (e.g. pitch bend wheel, |
366 |
|
|
* modulation wheel, aftertouch). |
367 |
|
|
* |
368 |
|
|
* @param pControlChangeEvent - controller, value and time stamp of the event |
369 |
|
|
*/ |
370 |
|
|
void AudioThread::ProcessControlChange(ModulationSystem::Event* pControlChangeEvent) { |
371 |
|
|
dmsg(4,("AudioThread::ContinuousController cc=%d v=%d\n", pControlChangeEvent->Controller, pControlChangeEvent->Value)); |
372 |
|
|
|
373 |
|
|
switch (pControlChangeEvent->Controller) { |
374 |
|
|
case 64: { |
375 |
schoenebeck |
37 |
if (pControlChangeEvent->Value >= 64 && !SustainPedal) { |
376 |
schoenebeck |
32 |
dmsg(4,("PEDAL DOWN\n")); |
377 |
|
|
SustainPedal = true; |
378 |
schoenebeck |
33 |
|
379 |
|
|
// cancel release process of voices if necessary |
380 |
|
|
uint* piKey = pActiveKeys->first(); |
381 |
|
|
if (piKey) { |
382 |
|
|
pControlChangeEvent->Type = ModulationSystem::event_type_cancel_release; // transform event type |
383 |
|
|
while (piKey) { |
384 |
|
|
midi_key_info_t* pKey = &pMIDIKeyInfo[*piKey]; |
385 |
|
|
pActiveKeys->set_current(piKey); |
386 |
|
|
piKey = pActiveKeys->next(); |
387 |
|
|
if (!pKey->KeyPressed) { |
388 |
|
|
ModulationSystem::Event* pNewEvent = pKey->pEvents->alloc(); |
389 |
|
|
if (pNewEvent) *pNewEvent = *pControlChangeEvent; // copy event to the key's own event list |
390 |
|
|
else dmsg(1,("Event pool emtpy!\n")); |
391 |
|
|
} |
392 |
|
|
} |
393 |
|
|
} |
394 |
schoenebeck |
32 |
} |
395 |
schoenebeck |
37 |
if (pControlChangeEvent->Value < 64 && SustainPedal) { |
396 |
schoenebeck |
32 |
dmsg(4,("PEDAL UP\n")); |
397 |
|
|
SustainPedal = false; |
398 |
schoenebeck |
33 |
|
399 |
|
|
// release voices if their respective key is not pressed |
400 |
|
|
uint* piKey = pActiveKeys->first(); |
401 |
|
|
if (piKey) { |
402 |
|
|
pControlChangeEvent->Type = ModulationSystem::event_type_release; // transform event type |
403 |
|
|
while (piKey) { |
404 |
|
|
midi_key_info_t* pKey = &pMIDIKeyInfo[*piKey]; |
405 |
|
|
pActiveKeys->set_current(piKey); |
406 |
|
|
piKey = pActiveKeys->next(); |
407 |
|
|
if (!pKey->KeyPressed) { |
408 |
|
|
ModulationSystem::Event* pNewEvent = pKey->pEvents->alloc(); |
409 |
|
|
if (pNewEvent) *pNewEvent = *pControlChangeEvent; // copy event to the key's own event list |
410 |
|
|
else dmsg(1,("Event pool emtpy!\n")); |
411 |
schoenebeck |
32 |
} |
412 |
schoenebeck |
18 |
} |
413 |
schoenebeck |
15 |
} |
414 |
schoenebeck |
12 |
} |
415 |
schoenebeck |
32 |
break; |
416 |
schoenebeck |
12 |
} |
417 |
senoner |
10 |
} |
418 |
schoenebeck |
37 |
|
419 |
|
|
// update controller value in the engine's controller table |
420 |
|
|
ControllerTable[pControlChangeEvent->Controller] = pControlChangeEvent->Value; |
421 |
|
|
|
422 |
|
|
// move event from the unsorted event list to the control change event list |
423 |
|
|
pEvents->move(pControlChangeEvent, pCCEvents); |
424 |
senoner |
10 |
} |
425 |
|
|
|
426 |
schoenebeck |
32 |
/** |
427 |
|
|
* Caches a certain size at the beginning of the given sample in RAM. If the |
428 |
|
|
* sample is very short, the whole sample will be loaded into RAM and thus |
429 |
|
|
* no disk streaming is needed for this sample. Caching an initial part of |
430 |
|
|
* samples is needed to compensate disk reading latency. |
431 |
|
|
* |
432 |
|
|
* @param pSample - points to the sample to be cached |
433 |
|
|
*/ |
434 |
schoenebeck |
9 |
void AudioThread::CacheInitialSamples(gig::Sample* pSample) { |
435 |
|
|
if (!pSample || pSample->GetCache().Size) return; |
436 |
|
|
if (pSample->SamplesTotal <= NUM_RAM_PRELOAD_SAMPLES) { |
437 |
|
|
// Sample is too short for disk streaming, so we load the whole |
438 |
|
|
// sample into RAM and place 'pAudioIO->FragmentSize << MAX_PITCH' |
439 |
|
|
// number of '0' samples (silence samples) behind the official buffer |
440 |
|
|
// border, to allow the interpolator do it's work even at the end of |
441 |
|
|
// the sample. |
442 |
schoenebeck |
31 |
gig::buffer_t buf = pSample->LoadSampleDataWithNullSamplesExtension((pAudioIO->MaxSamplesPerCycle() << MAX_PITCH) + 3); |
443 |
schoenebeck |
12 |
dmsg(4,("Cached %d Bytes, %d silence bytes.\n", buf.Size, buf.NullExtensionSize)); |
444 |
schoenebeck |
9 |
} |
445 |
|
|
else { // we only cache NUM_RAM_PRELOAD_SAMPLES and stream the other sample points from disk |
446 |
|
|
pSample->LoadSampleData(NUM_RAM_PRELOAD_SAMPLES); |
447 |
|
|
} |
448 |
|
|
|
449 |
|
|
if (!pSample->GetCache().Size) std::cerr << "Unable to cache sample - maybe memory full!" << std::endl << std::flush; |
450 |
|
|
} |
451 |
schoenebeck |
35 |
|
452 |
|
|
/** |
453 |
|
|
* Load an instrument from a .gig file. |
454 |
|
|
* |
455 |
|
|
* @param FileName - file name of the Gigasampler instrument file |
456 |
|
|
* @param Instrument - index of the instrument in the .gig file |
457 |
|
|
* @returns detailed description of the result of the method call |
458 |
|
|
*/ |
459 |
|
|
result_t AudioThread::LoadInstrument(const char* FileName, uint Instrument) { |
460 |
|
|
result_t result; |
461 |
|
|
|
462 |
|
|
if (pInstrument) { // if already running |
463 |
|
|
// signal audio thread not to enter render part anymore |
464 |
|
|
SuspensionRequested = true; |
465 |
|
|
// sleep until wakened by audio thread |
466 |
|
|
pthread_mutex_lock(&__render_state_mutex); |
467 |
|
|
pthread_cond_wait(&__render_exit_condition, &__render_state_mutex); |
468 |
|
|
pthread_mutex_unlock(&__render_state_mutex); |
469 |
|
|
|
470 |
|
|
dmsg(1,("Freeing old instrument from memory...")); |
471 |
|
|
delete pGig; |
472 |
|
|
delete pRIFF; |
473 |
|
|
pInstrument = NULL; |
474 |
|
|
dmsg(1,("OK\n")); |
475 |
|
|
} |
476 |
|
|
|
477 |
|
|
// loading gig file |
478 |
|
|
try { |
479 |
|
|
dmsg(1,("Loading gig file...")); |
480 |
|
|
pRIFF = new RIFF::File(FileName); |
481 |
|
|
pGig = new gig::File(pRIFF); |
482 |
|
|
pInstrument = pGig->GetInstrument(Instrument); |
483 |
|
|
if (!pInstrument) { |
484 |
|
|
std::stringstream msg; |
485 |
|
|
msg << "There's no instrument with index " << Instrument << "."; |
486 |
|
|
std::cerr << msg << std::endl; |
487 |
|
|
result.type = result_type_error; |
488 |
|
|
result.code = LSCP_ERR_UNKNOWN; |
489 |
|
|
result.message = msg.str(); |
490 |
|
|
return result; |
491 |
|
|
} |
492 |
|
|
pGig->GetFirstSample(); // just to complete instrument loading before we enter the realtime part |
493 |
|
|
dmsg(1,("OK\n")); |
494 |
|
|
} |
495 |
|
|
catch (RIFF::Exception e) { |
496 |
|
|
e.PrintMessage(); |
497 |
|
|
result.type = result_type_error; |
498 |
|
|
result.code = LSCP_ERR_UNKNOWN; |
499 |
|
|
result.message = e.Message; |
500 |
|
|
return result; |
501 |
|
|
} |
502 |
|
|
catch (...) { |
503 |
|
|
dmsg(1,("Unknown exception while trying to parse gig file.\n")); |
504 |
|
|
result.type = result_type_error; |
505 |
|
|
result.code = LSCP_ERR_UNKNOWN; |
506 |
|
|
result.message = "Unknown exception while trying to parse gig file."; |
507 |
|
|
return result; |
508 |
|
|
} |
509 |
|
|
|
510 |
|
|
// cache initial samples points (for actually needed samples) |
511 |
|
|
dmsg(1,("Caching initial samples...")); |
512 |
|
|
gig::Region* pRgn = this->pInstrument->GetFirstRegion(); |
513 |
|
|
while (pRgn) { |
514 |
|
|
if (!pRgn->GetSample()->GetCache().Size) { |
515 |
|
|
dmsg(2,("C")); |
516 |
|
|
CacheInitialSamples(pRgn->GetSample()); |
517 |
|
|
} |
518 |
|
|
for (uint i = 0; i < pRgn->DimensionRegions; i++) { |
519 |
|
|
CacheInitialSamples(pRgn->pDimensionRegions[i]->pSample); |
520 |
|
|
} |
521 |
|
|
|
522 |
|
|
pRgn = this->pInstrument->GetNextRegion(); |
523 |
|
|
} |
524 |
|
|
dmsg(1,("OK\n")); |
525 |
|
|
|
526 |
|
|
ResetInternal(); // reset engine |
527 |
|
|
|
528 |
|
|
// signal audio thread to continue with rendering |
529 |
|
|
SuspensionRequested = false; |
530 |
|
|
|
531 |
|
|
// success |
532 |
|
|
result.type = result_type_success; |
533 |
|
|
return result; |
534 |
|
|
} |
535 |
|
|
|
536 |
|
|
/** |
537 |
|
|
* Reset all voices and disk thread and clear input event queue and all |
538 |
|
|
* control and status variables. |
539 |
|
|
*/ |
540 |
|
|
void AudioThread::Reset() { |
541 |
|
|
if (pInstrument) { // if already running |
542 |
|
|
// signal audio thread not to enter render part anymore |
543 |
|
|
SuspensionRequested = true; |
544 |
|
|
// sleep until wakened by audio thread |
545 |
|
|
pthread_mutex_lock(&__render_state_mutex); |
546 |
|
|
pthread_cond_wait(&__render_exit_condition, &__render_state_mutex); |
547 |
|
|
pthread_mutex_unlock(&__render_state_mutex); |
548 |
|
|
} |
549 |
|
|
|
550 |
|
|
ResetInternal(); |
551 |
|
|
|
552 |
|
|
// signal audio thread to continue with rendering |
553 |
|
|
SuspensionRequested = false; |
554 |
|
|
} |
555 |
|
|
|
556 |
|
|
/** |
557 |
|
|
* Reset all voices and disk thread and clear input event queue and all |
558 |
|
|
* control and status variables. This method is not thread safe! |
559 |
|
|
*/ |
560 |
|
|
void AudioThread::ResetInternal() { |
561 |
|
|
this->Pitch = 0; |
562 |
|
|
SustainPedal = 0; |
563 |
|
|
ActiveVoiceCount = 0; |
564 |
|
|
ActiveVoiceCountMax = 0; |
565 |
|
|
|
566 |
|
|
// reset key info |
567 |
|
|
for (uint i = 0; i < 128; i++) { |
568 |
|
|
pMIDIKeyInfo[i].pActiveVoices->clear(); |
569 |
|
|
pMIDIKeyInfo[i].pEvents->clear(); |
570 |
|
|
pMIDIKeyInfo[i].KeyPressed = false; |
571 |
|
|
pMIDIKeyInfo[i].Active = false; |
572 |
|
|
pMIDIKeyInfo[i].pSelf = NULL; |
573 |
|
|
} |
574 |
|
|
|
575 |
|
|
// reset all voices |
576 |
|
|
for (Voice* pVoice = pVoicePool->first(); pVoice; pVoice = pVoicePool->next()) { |
577 |
|
|
pVoice->Reset(); |
578 |
|
|
} |
579 |
|
|
|
580 |
|
|
// free all active keys |
581 |
|
|
pActiveKeys->clear(); |
582 |
|
|
|
583 |
|
|
// reset disk thread |
584 |
|
|
pDiskThread->Reset(); |
585 |
|
|
|
586 |
|
|
// delete all input events |
587 |
|
|
pEventQueue->init(); |
588 |
|
|
} |