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Carla
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Split zyn process code by events, closes #294

tags/1.9.7
falkTX 9 years ago
parent
c5a6ddaf28
commit
e111ee3379
1 changed files with 81 additions and 50 deletions
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  1. +81
    -50
      source/native-plugins/zynaddsubfx-synth.cpp

+ 81
- 50
source/native-plugins/zynaddsubfx-synth.cpp View File

@@ -539,7 +539,8 @@ protected:
fIsActive = false;
}

void process(float**, float** const outBuffer, const uint32_t frames, const NativeMidiEvent* const midiEvents, const uint32_t midiEventCount) override
void process(float**, float** const outBuffer, const uint32_t frames,
const NativeMidiEvent* const midiEvents, const uint32_t midiEventCount) override
{
if (! fMutex.tryLock())
{
@@ -553,55 +554,88 @@ protected:
fMutex.lock();
}

for (uint32_t i=0; i < midiEventCount; ++i)
{
const NativeMidiEvent* const midiEvent(&midiEvents[i]);
// 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;

const uint8_t status = MIDI_GET_STATUS_FROM_DATA(midiEvent->data);
const char channel = MIDI_GET_CHANNEL_FROM_DATA(midiEvent->data);
do {
/* Find the time of the next event, if any */
if (midiEvents == nullptr || midiEventIndex >= midiEventCount)
nextEventFrame = (uint32_t)-1;
else
nextEventFrame = midiEvents[midiEventIndex].time;

if (MIDI_IS_STATUS_NOTE_OFF(status))
{
const char note = static_cast<char>(midiEvent->data[1]);
/* 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;

fMaster->noteOff(channel, note);
}
else if (MIDI_IS_STATUS_NOTE_ON(status))
if (fromFrame < toFrame)
{
const char note = static_cast<char>(midiEvent->data[1]);
const char velo = static_cast<char>(midiEvent->data[2]);
// call master to fill from `fromFrame` to `toFrame`:
fMaster->GetAudioOutSamples(toFrame - fromFrame, fSynth.samplerate, outBuffer[0], outBuffer[1]);

fMaster->noteOn(channel, note, velo);
// next sub-sample please...
fromFrame = toFrame;
}
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))
// Now process any event(s) at the current timing point
for (; midiEventIndex < midiEventCount && midiEvents[midiEventIndex].time == toFrame;)
{
// 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);
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);
}
}
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);
}
}

fMaster->GetAudioOutSamples(frames, fSynth.samplerate, outBuffer[0], outBuffer[1]);
// Keep going until we have the desired total length of sample...
} while (toFrame < frames);

fMutex.unlock();
}
@@ -764,12 +798,11 @@ private:

void run() noexcept override
{
for (;;)
for (; ! shouldThreadExit();)
{
if (MiddleWare* const mw = fMiddleWare)
mw->tick();
else
break;
try {
fMiddleWare->tick();
} CARLA_SAFE_EXCEPTION("ZynAddSubFX MiddleWare tick");

carla_msleep(1);
}
@@ -825,13 +858,11 @@ private:

void _deleteMaster()
{
fMaster = nullptr;
stopThread(1000);

MiddleWare* const tmp(fMiddleWare);
fMaster = nullptr;
delete fMiddleWare;
fMiddleWare = nullptr;

stopThread(1000);
delete tmp;
}

void _masterChangedCallback(Master* m)


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