void setParameterValue(const uint32_t index, const float realValue)
{
const ParameterRanges& ranges(fPlugin->getParameterRanges(index));
const float perValue(ranges.getNormalizedValue(realValue));
fPlugin->setParameterValue(index, realValue);
hostCallback(audioMasterAutomate, index, 0, nullptr, perValue);
}
inline VstTimeInfo* GetTimeInfo(audioMasterCallback hostCallback, AEffect* pAEffect, int filter = 0)
{
#pragma warning(disable:4312) // Pointer size cast mismatch.
VstTimeInfo* pTI = (VstTimeInfo*) hostCallback(pAEffect, audioMasterGetTime, 0, filter, 0, 0);
#pragma warning(default:4312)
if (pTI && (!filter || (pTI->flags & filter))) {
return pTI;
}
return 0;
}
UIVst(const audioMasterCallback audioMaster, AEffect* const effect, UiHelper* const uiHelper, PluginExporter* const plugin, const intptr_t winId)
: fAudioMaster(audioMaster),
fEffect(effect),
fUiHelper(uiHelper),
fPlugin(plugin),
fUI(this, winId, editParameterCallback, setParameterCallback, setStateCallback, sendNoteCallback, setSizeCallback, plugin->getInstancePointer()),
fShouldCaptureVstKeys(false)
{
// FIXME only needed for windows?
//#ifdef DISTRHO_OS_WINDOWS
char strBuf[0xff+1];
std::memset(strBuf, 0, sizeof(char)*(0xff+1));
hostCallback(audioMasterGetProductString, 0, 0, strBuf);
d_stdout("Plugin UI running in '%s'", strBuf);
// TODO make a white-list of needed hosts
if (/*std::strcmp(strBuf, "") == 0*/ true)
fShouldCaptureVstKeys = true;
//#endif
}
void vst_processReplacing(const float** const inputs, float** const outputs, const int32_t sampleFrames)
{
if (sampleFrames <= 0)
return;
if (! fPlugin.isActive())
{
// host has not activated the plugin yet, nasty!
vst_dispatcher(effMainsChanged, 0, 1, nullptr, 0.0f);
}
#if DISTRHO_PLUGIN_WANT_TIMEPOS
static const int kWantVstTimeFlags(kVstTransportPlaying|kVstPpqPosValid|kVstTempoValid|kVstTimeSigValid);
if (const VstTimeInfo* const vstTimeInfo = (const VstTimeInfo*)hostCallback(audioMasterGetTime, 0, kWantVstTimeFlags))
{
fTimePosition.frame = vstTimeInfo->samplePos;
fTimePosition.playing = (vstTimeInfo->flags & kVstTransportPlaying);
fTimePosition.bbt.valid = ((vstTimeInfo->flags & kVstTempoValid) != 0 || (vstTimeInfo->flags & kVstTimeSigValid) != 0);
// ticksPerBeat is not possible with VST
fTimePosition.bbt.ticksPerBeat = 960.0;
if (vstTimeInfo->flags & kVstTempoValid)
fTimePosition.bbt.beatsPerMinute = vstTimeInfo->tempo;
else
fTimePosition.bbt.beatsPerMinute = 120.0;
if (vstTimeInfo->flags & (kVstPpqPosValid|kVstTimeSigValid))
{
const int ppqPerBar = vstTimeInfo->timeSigNumerator * 4 / vstTimeInfo->timeSigDenominator;
const double barBeats = (std::fmod(vstTimeInfo->ppqPos, ppqPerBar) / ppqPerBar) * vstTimeInfo->timeSigDenominator;
const double rest = std::fmod(barBeats, 1.0);
fTimePosition.bbt.bar = int(vstTimeInfo->ppqPos)/ppqPerBar + 1;
fTimePosition.bbt.beat = barBeats-rest+1;
fTimePosition.bbt.tick = rest*fTimePosition.bbt.ticksPerBeat+0.5;
fTimePosition.bbt.beatsPerBar = vstTimeInfo->timeSigNumerator;
fTimePosition.bbt.beatType = vstTimeInfo->timeSigDenominator;
}
else
{
fTimePosition.bbt.bar = 1;
fTimePosition.bbt.beat = 1;
fTimePosition.bbt.tick = 0;
fTimePosition.bbt.beatsPerBar = 4.0f;
fTimePosition.bbt.beatType = 4.0f;
}
fTimePosition.bbt.barStartTick = fTimePosition.bbt.ticksPerBeat*fTimePosition.bbt.beatsPerBar*(fTimePosition.bbt.bar-1);
fPlugin.setTimePosition(fTimePosition);
}
#endif
#if DISTRHO_PLUGIN_WANT_MIDI_INPUT
fPlugin.run(inputs, outputs, sampleFrames, fMidiEvents, fMidiEventCount);
fMidiEventCount = 0;
#else
fPlugin.run(inputs, outputs, sampleFrames);
#endif
#if DISTRHO_PLUGIN_HAS_UI
if (fVstUI == nullptr)
return;
for (uint32_t i=0, count=fPlugin.getParameterCount(); i < count; ++i)
{
if (fPlugin.isParameterOutput(i))
setParameterValueFromPlugin(i, fPlugin.getParameterValue(i));
}
#endif
}
void setSize(const uint width, const uint height)
{
fUI.setWindowSize(width, height);
hostCallback(audioMasterSizeWindow, width, height);
}
void editParameter(const uint32_t index, const bool started)
{
hostCallback(started ? audioMasterBeginEdit : audioMasterEndEdit, index);
}