EHost IPlugVST::GetHost()
{
EHost host = IPlugBase::GetHost();
if (host == kHostUninit)
{
char productStr[256];
productStr[0] = '\0';
int version = 0;
mHostCallback(&mAEffect, audioMasterGetProductString, 0, 0, productStr, 0.0f);
if (CSTR_NOT_EMPTY(productStr))
{
int decVer = mHostCallback(&mAEffect, audioMasterGetVendorVersion, 0, 0, 0, 0.0f);
int ver = decVer / 10000;
int rmaj = (decVer - 10000 * ver) / 100;
int rmin = (decVer - 10000 * ver - 100 * rmaj);
version = (ver << 16) + (rmaj << 8) + rmin;
}
SetHost(productStr, version);
host = IPlugBase::GetHost();
}
return host;
}
void IPlugVST::VSTPrepProcess(SAMPLETYPE** inputs, SAMPLETYPE** outputs, VstInt32 nFrames)
{
if (DoesMIDI()) {
mHostCallback(&mAEffect, __audioMasterWantMidiDeprecated, 0, 0, 0, 0.0f);
}
AttachInputBuffers(0, NInChannels(), inputs, nFrames);
AttachOutputBuffers(0, NOutChannels(), outputs);
}
void IPlugVST::BeginDelayedInformHostOfParamChange(int idx)
{
IMutexLock lock(this);
if (idx != mParamChangeIdx) {
EndDelayedInformHostOfParamChange();
mHostCallback(&mAEffect, audioMasterBeginEdit, idx, 0, 0, 0.0f);
}
}
bool IPlugVST::SendVSTEvent(VstEvent* pEvent)
{
// It would be more efficient to bundle these and send at the end of a processed block,
// but that would require writing OnBlockEnd and making sure it always gets called,
// and who cares anyway, midi events aren't that dense.
VstEvents events;
memset(&events, 0, sizeof(VstEvents));
events.numEvents = 1;
events.events[0] = pEvent;
return (mHostCallback(&mAEffect, audioMasterProcessEvents, 0, 0, &events, 0.0f) == 1);
}
void IPlugVST::InformHostOfParamChange(int idx, double normalizedValue)
{
mHostCallback(&mAEffect, audioMasterAutomate, idx, 0, 0, (float) normalizedValue);
}
void IPlugVST::BeginInformHostOfParamChange(int idx)
{
mHostCallback(&mAEffect, audioMasterBeginEdit, idx, 0, 0, 0.0f);
}
bool IPlugVST::IsRenderingOffline()
{
return mHostCallback(&mAEffect, audioMasterGetCurrentProcessLevel, 0, 0, 0, 0.0f) == kVstProcessLevelOffline;
}
void IPlugVST::InformHostOfProgramChange()
{
mHostCallback(&mAEffect, audioMasterUpdateDisplay, 0, 0, 0, 0.0f);
}