1 changed files with 56 additions and 75 deletions
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+ 56
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source/native-plugins/zynaddsubfx-synth.cpp
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| @@ -555,88 +555,69 @@ protected: | |||
| fMutex.lock(); | |||
| } | |||
| // the following code is based on ZynAddSubFX DSSI plugin code by Stephen G. Parry | |||
| uint32_t fromFrame = 0; | |||
| uint32_t toFrame = 0; | |||
| uint32_t midiEventIndex = 0; | |||
| uint32_t nextEventFrame = 0; | |||
| do { | |||
| /* Find the time of the next event, if any */ | |||
| if (midiEvents == nullptr || midiEventIndex >= midiEventCount) | |||
| nextEventFrame = (uint32_t)-1; | |||
| else | |||
| nextEventFrame = midiEvents[midiEventIndex].time; | |||
| /* find the end of the sub-sample to be processed this time round... */ | |||
| /* if the next event falls within the desired sample interval... */ | |||
| if (nextEventFrame < frames && nextEventFrame >= toFrame) | |||
| /* set the end to be at that event */ | |||
| toFrame = nextEventFrame; | |||
| else | |||
| /* ...else go for the whole remaining sample */ | |||
| toFrame = frames; | |||
| if (fromFrame < toFrame) | |||
| uint32_t framesOffset = 0; | |||
| for (uint32_t i=0; i < midiEventCount; ++i) | |||
| { | |||
| const NativeMidiEvent* const midiEvent(&midiEvents[i]); | |||
| if (midiEvent->time >= frames) | |||
| continue; | |||
| if (midiEvent->time > framesOffset) | |||
| { | |||
| // call master to fill from `fromFrame` to `toFrame`: | |||
| fMaster->GetAudioOutSamples(toFrame - fromFrame, fSynth.samplerate, outBuffer[0], outBuffer[1]); | |||
| fMaster->GetAudioOutSamples(midiEvent->time-framesOffset, fSynth.samplerate, outBuffer[0]+framesOffset, | |||
| outBuffer[1]+framesOffset); | |||
| framesOffset = midiEvent->time; | |||
| } | |||
| // next sub-sample please... | |||
| fromFrame = toFrame; | |||
| const uint8_t status = MIDI_GET_STATUS_FROM_DATA(midiEvent->data); | |||
| const char channel = MIDI_GET_CHANNEL_FROM_DATA(midiEvent->data); | |||
| if (MIDI_IS_STATUS_NOTE_OFF(status)) | |||
| { | |||
| const char note = static_cast<char>(midiEvent->data[1]); | |||
| fMaster->noteOff(channel, note); | |||
| } | |||
| else if (MIDI_IS_STATUS_NOTE_ON(status)) | |||
| { | |||
| const char note = static_cast<char>(midiEvent->data[1]); | |||
| const char velo = static_cast<char>(midiEvent->data[2]); | |||
| // Now process any event(s) at the current timing point | |||
| for (; midiEventIndex < midiEventCount && midiEvents[midiEventIndex].time == toFrame;) | |||
| fMaster->noteOn(channel, note, velo); | |||
| } | |||
| else if (MIDI_IS_STATUS_POLYPHONIC_AFTERTOUCH(status)) | |||
| { | |||
| const NativeMidiEvent* const midiEvent(&midiEvents[midiEventIndex++]); | |||
| const uint8_t status = MIDI_GET_STATUS_FROM_DATA(midiEvent->data); | |||
| const char channel = MIDI_GET_CHANNEL_FROM_DATA(midiEvent->data); | |||
| if (MIDI_IS_STATUS_NOTE_OFF(status)) | |||
| { | |||
| const char note = static_cast<char>(midiEvent->data[1]); | |||
| fMaster->noteOff(channel, note); | |||
| } | |||
| else if (MIDI_IS_STATUS_NOTE_ON(status)) | |||
| { | |||
| const char note = static_cast<char>(midiEvent->data[1]); | |||
| const char velo = static_cast<char>(midiEvent->data[2]); | |||
| fMaster->noteOn(channel, note, velo); | |||
| } | |||
| else if (MIDI_IS_STATUS_POLYPHONIC_AFTERTOUCH(status)) | |||
| { | |||
| const char note = static_cast<char>(midiEvent->data[1]); | |||
| const char pressure = static_cast<char>(midiEvent->data[2]); | |||
| fMaster->polyphonicAftertouch(channel, note, pressure); | |||
| } | |||
| else if (MIDI_IS_STATUS_CONTROL_CHANGE(status)) | |||
| { | |||
| // skip controls which we map to parameters | |||
| if (getIndexFromZynControl(midiEvent->data[1]) != kParamCount) | |||
| continue; | |||
| const int control = midiEvent->data[1]; | |||
| const int value = midiEvent->data[2]; | |||
| fMaster->setController(channel, control, value); | |||
| } | |||
| else if (MIDI_IS_STATUS_PITCH_WHEEL_CONTROL(status)) | |||
| { | |||
| const uint8_t lsb = midiEvent->data[1]; | |||
| const uint8_t msb = midiEvent->data[2]; | |||
| const int value = ((msb << 7) | lsb) - 8192; | |||
| fMaster->setController(channel, C_pitchwheel, value); | |||
| } | |||
| const char note = static_cast<char>(midiEvent->data[1]); | |||
| const char pressure = static_cast<char>(midiEvent->data[2]); | |||
| fMaster->polyphonicAftertouch(channel, note, pressure); | |||
| } | |||
| else if (MIDI_IS_STATUS_CONTROL_CHANGE(status)) | |||
| { | |||
| // skip controls which we map to parameters | |||
| if (getIndexFromZynControl(midiEvent->data[1]) != kParamCount) | |||
| continue; | |||
| const int control = midiEvent->data[1]; | |||
| const int value = midiEvent->data[2]; | |||
| fMaster->setController(channel, control, value); | |||
| } | |||
| else if (MIDI_IS_STATUS_PITCH_WHEEL_CONTROL(status)) | |||
| { | |||
| const uint8_t lsb = midiEvent->data[1]; | |||
| const uint8_t msb = midiEvent->data[2]; | |||
| const int value = ((msb << 7) | lsb) - 8192; | |||
| fMaster->setController(channel, C_pitchwheel, value); | |||
| } | |||
| } | |||
| // Keep going until we have the desired total length of sample... | |||
| } while (toFrame < frames); | |||
| if (frames > framesOffset) | |||
| fMaster->GetAudioOutSamples(frames-framesOffset, fSynth.samplerate, outBuffer[0]+framesOffset, | |||
| outBuffer[1]+framesOffset); | |||
| fMutex.unlock(); | |||
| } | |||