static int _testNewPluginVst2xId(void)
{
PluginVst2xId id = newPluginVst2xId();
assertUnsignedLongEquals(ZERO_UNSIGNED_LONG, id->id);
assertCharStringEquals(PLUGIN_VST2X_ID_UNKNOWN, id->idString);
freePluginVst2xId(id);
return 0;
}
VstIntPtr VSTCALLBACK pluginVst2xHostCallback(AEffect *effect, VstInt32 opcode, VstInt32 index, VstIntPtr value, void *dataPtr, float opt) {
// This string is used in a bunch of logging calls below
PluginVst2xId pluginId;
if(effect != NULL) {
pluginId = newPluginVst2xIdWithId(effect->uniqueID);
}
else {
// During plugin initialization, the dispatcher can be called without a
// valid plugin instance, as the AEffect* struct is still not fully constructed
// at that point.
pluginId = newPluginVst2xId();
}
const char* pluginIdString = pluginId->idString->data;
VstIntPtr result = 0;
logDebug("Plugin '%s' called host dispatcher with %d, %d, %d", pluginIdString, opcode, index, value);
switch(opcode) {
case audioMasterAutomate:
// The plugin will call this if a parameter has changed via MIDI or the GUI, so the host can update
// itself accordingly. We don't care about this (for the time being), and as we don't support either
// GUI's or live MIDI, this opcode can be ignored.
break;
case audioMasterVersion:
// We are a VST 2.4 compatible host
result = 2400;
break;
case audioMasterCurrentId:
// Use the current plugin ID, needed by VST shell plugins to determine which sub-plugin to load
result = currentPluginUniqueId;
break;
case audioMasterIdle:
// Ignore
result = 1;
break;
case audioMasterPinConnected:
logDeprecated("audioMasterPinConnected", pluginIdString);
break;
case audioMasterWantMidi:
// This (deprecated) call is sometimes made by VST2.3 instruments to tell
// the host that it is an instrument. We can safely ignore it.
result = 1;
break;
case audioMasterGetTime: {
AudioClock audioClock = getAudioClock();
// These values are always valid
vstTimeInfo.samplePos = audioClock->currentFrame;
vstTimeInfo.sampleRate = getSampleRate();
// Set flags for transport state
vstTimeInfo.flags = 0;
vstTimeInfo.flags |= audioClock->transportChanged ? kVstTransportChanged : 0;
vstTimeInfo.flags |= audioClock->isPlaying ? kVstTransportPlaying : 0;
// Fill values based on other flags which may have been requested
if(value & kVstNanosValid) {
// It doesn't make sense to return this value, as the plugin may try to calculate
// something based on the current system time. As we are running offline, anything
// the plugin calculates here will probably be wrong given the way we are running.
// However, for realtime mode, this flag should be implemented in that case.
logWarn("Plugin '%s' asked for time in nanoseconds (unsupported)", pluginIdString);
}
if(value & kVstPpqPosValid) {
// TODO: Move calculations to AudioClock
double samplesPerBeat = (60.0 / getTempo()) * getSampleRate();
// Musical time starts with 1, not 0
vstTimeInfo.ppqPos = (vstTimeInfo.samplePos / samplesPerBeat) + 1.0;
logDebug("Current PPQ position is %g", vstTimeInfo.ppqPos);
vstTimeInfo.flags |= kVstPpqPosValid;
}
if(value & kVstTempoValid) {
vstTimeInfo.tempo = getTempo();
vstTimeInfo.flags |= kVstTempoValid;
}
if(value & kVstBarsValid) {
if(!(value & kVstPpqPosValid)) {
logError("Plugin requested position in bars, but not PPQ");
}
// TODO: Move calculations to AudioClock
double currentBarPos = floor(vstTimeInfo.ppqPos / (double)getTimeSignatureBeatsPerMeasure());
vstTimeInfo.barStartPos = currentBarPos * (double)getTimeSignatureBeatsPerMeasure() + 1.0;
logDebug("Current bar is %g", vstTimeInfo.barStartPos);
vstTimeInfo.flags |= kVstBarsValid;
}
if(value & kVstCyclePosValid) {
// We don't support cycling, so this is always 0
}
if(value & kVstTimeSigValid) {
vstTimeInfo.timeSigNumerator = getTimeSignatureBeatsPerMeasure();
vstTimeInfo.timeSigDenominator = getTimeSignatureNoteValue();
vstTimeInfo.flags |= kVstTimeSigValid;
}
if(value & kVstSmpteValid) {
logUnsupportedFeature("Current time in SMPTE format");
}
if(value & kVstClockValid) {
logUnsupportedFeature("Sample frames until next clock");
}
result = (VstIntPtr)&vstTimeInfo;
break;
}
case audioMasterProcessEvents:
logUnsupportedFeature("VST master opcode audioMasterProcessEvents");
break;
case audioMasterSetTime:
logDeprecated("audioMasterSetTime", pluginIdString);
break;
case audioMasterTempoAt:
logDeprecated("audioMasterTempoAt", pluginIdString);
break;
case audioMasterGetNumAutomatableParameters:
logDeprecated("audioMasterGetNumAutomatableParameters", pluginIdString);
break;
case audioMasterGetParameterQuantization:
logDeprecated("audioMasterGetParameterQuantization", pluginIdString);
break;
case audioMasterIOChanged: {
PluginChain pluginChain = getPluginChain();
logDebug("Number of inputs: %d", effect->numInputs);
logDebug("Number of outputs: %d", effect->numOutputs);
logDebug("Number of parameters: %d", effect->numParams);
logDebug("Initial Delay: %d", effect->initialDelay);
result = -1;
for(unsigned int i = 0; i < pluginChain->numPlugins; ++i){
if((unsigned long)effect->uniqueID == pluginVst2xGetUniqueId(pluginChain->plugins[i])){
logDebug("Updating plugin");
pluginVst2xAudioMasterIOChanged(pluginChain->plugins[i], effect);
result = 0;
break;//Only one plugin will match anyway.
}
}
break;
}
case audioMasterNeedIdle:
logDeprecated("audioMasterNeedIdle", pluginIdString);
break;
case audioMasterSizeWindow:
logWarn("Plugin '%s' asked us to resize window (unsupported)", pluginIdString);
break;
case audioMasterGetSampleRate:
result = (int)getSampleRate();
break;
case audioMasterGetBlockSize:
result = getBlocksize();
break;
case audioMasterGetInputLatency:
// Input latency is not used, and is always 0
result = 0;
break;
case audioMasterGetOutputLatency:
// Output latency is not used, and is always 0
result = 0;
break;
case audioMasterGetPreviousPlug:
logDeprecated("audioMasterGetPreviousPlug", pluginIdString);
break;
case audioMasterGetNextPlug:
logDeprecated("audioMasterGetNextPlug", pluginIdString);
break;
case audioMasterWillReplaceOrAccumulate:
logDeprecated("audioMasterWillReplaceOrAccumulate", pluginIdString);
break;
case audioMasterGetCurrentProcessLevel:
// We are not a multithreaded app and have no GUI, so this is unsupported.
result = kVstProcessLevelUnknown;
break;
case audioMasterGetAutomationState:
// Automation is also not supported (for now)
result = kVstAutomationUnsupported;
break;
case audioMasterOfflineStart:
logWarn("Plugin '%s' asked us to start offline processing (unsupported)", pluginIdString);
break;
case audioMasterOfflineRead:
logWarn("Plugin '%s' asked to read offline data (unsupported)", pluginIdString);
break;
case audioMasterOfflineWrite:
logWarn("Plugin '%s' asked to write offline data (unsupported)", pluginIdString);
break;
case audioMasterOfflineGetCurrentPass:
logWarn("Plugin '%s' asked for current offline pass (unsupported)", pluginIdString);
break;
case audioMasterOfflineGetCurrentMetaPass:
logWarn("Plugin '%s' asked for current offline meta pass (unsupported)", pluginIdString);
break;
case audioMasterSetOutputSampleRate:
logDeprecated("audioMasterSetOutputSampleRate", pluginIdString);
break;
case audioMasterGetOutputSpeakerArrangement:
logDeprecated("audioMasterGetOutputSpeakerArrangement", pluginIdString);
break;
case audioMasterGetVendorString:
strncpy((char*)dataPtr, VENDOR_NAME, kVstMaxVendorStrLen);
result = 1;
break;
case audioMasterGetProductString:
strncpy((char*)dataPtr, PROGRAM_NAME, kVstMaxProductStrLen);
result = 1;
break;
case audioMasterGetVendorVersion:
// Return our version as a single string, in the form ABCC, which corresponds to version A.B.C
// Often times the patch can reach double-digits, so it gets two decimal places.
result = VERSION_MAJOR * 1000 + VERSION_MINOR * 100 + VERSION_PATCH;
break;
case audioMasterVendorSpecific:
logWarn("Plugin '%s' made a vendor specific call (unsupported). Arguments: %d, %d, %f", pluginIdString, index, value, opt);
break;
case audioMasterCanDo:
result = _canHostDo(pluginIdString, (char*)dataPtr);
break;
case audioMasterSetIcon:
logDeprecated("audioMasterSetIcon", pluginIdString);
break;
case audioMasterGetLanguage:
result = kVstLangEnglish;
break;
case audioMasterOpenWindow:
logDeprecated("audioMasterOpenWindow", pluginIdString);
break;
case audioMasterCloseWindow:
logDeprecated("audioMasterCloseWindow", pluginIdString);
break;
case audioMasterGetDirectory:
logWarn("Plugin '%s' asked for directory pointer (unsupported)", pluginIdString);
break;
case audioMasterUpdateDisplay:
// Ignore
break;
case audioMasterBeginEdit:
logWarn("Plugin '%s' asked to begin parameter automation (unsupported)", pluginIdString);
break;
case audioMasterEndEdit:
logWarn("Plugin '%s' asked to end parameter automation (unsupported)", pluginIdString);
break;
case audioMasterOpenFileSelector:
logWarn("Plugin '%s' asked us to open file selector (unsupported)", pluginIdString);
break;
case audioMasterCloseFileSelector:
logWarn("Plugin '%s' asked us to close file selector (unsupported)", pluginIdString);
break;
case audioMasterEditFile:
logDeprecated("audioMasterEditFile", pluginIdString);
break;
case audioMasterGetChunkFile:
logDeprecated("audioMasterGetChunkFile", pluginIdString);
break;
case audioMasterGetInputSpeakerArrangement:
logDeprecated("audioMasterGetInputSpeakerArrangement", pluginIdString);
break;
default:
logWarn("Plugin '%s' asked if host can do unknown opcode %d", pluginIdString, opcode);
break;
}
freePluginVst2xId(pluginId);
return result;
}