public bool Read(string filePath)
{
// store filepath
FilePath = filePath;
FXP fxp = new FXP();
fxp.ReadFile(filePath);
if (!ReadFXP(fxp, filePath)) {
return false;
}
return true;
}
public void LoadFXP(string filePath)
{
if (filePath == null || filePath == "") {
return;
}
// How does the GetChunk/SetChunk interface work? What information should be in those chunks?
// How does the BeginLoadProgram and BeginLoadBank work?
// There doesn't seem to be any restriction on what data is put in the chunks.
// The beginLoadBank/Program methods are also part of the persistence call sequence.
// GetChunk returns a buffer with program information of either the current/active program
// or all programs.
// SetChunk should read this information back in and initialize either the current/active program
// or all programs.
// Before SetChunk is called, the beginLoadBank/Program method is called
// passing information on the version of the plugin that wrote the data.
// This will allow you to support older data versions of your plugin's data or
// even support reading other plugin's data.
// Some hosts will call GetChunk before calling beginLoadBakn/Program and SetChunk.
// This is an optimazation of the host to determine if the information to load is
// actually different than the state your plugin program(s) (are) in.
bool UseChunk = false;
if ((PluginContext.PluginInfo.Flags & VstPluginFlags.ProgramChunks) == 0) {
// Chunks not supported.
UseChunk = false;
} else {
// Chunks supported.
UseChunk = true;
}
FXP fxp = new FXP();
fxp.ReadFile(filePath);
if (fxp.ChunkMagic != "CcnK") {
// not a fxp or fxb file
Console.Out.WriteLine("Error - Cannot Load. Loaded preset is not a fxp or fxb file");
return;
}
int pluginUniqueID = PluginIDStringToIDNumber(fxp.FxID);
int currentPluginID = PluginContext.PluginInfo.PluginID;
if (pluginUniqueID != currentPluginID) {
Console.Out.WriteLine("Error - Cannot Load. Loaded preset has another ID!");
} else {
// Preset (Program) (.fxp) with chunk (magic = 'FPCh')
// Bank (.fxb) with chunk (magic = 'FBCh')
if (fxp.FxMagic == "FPCh" || fxp.FxMagic == "FBCh") {
UseChunk = true;
} else {
UseChunk = false;
}
if (UseChunk) {
// If your plug-in is configured to use chunks
// the Host will ask for a block of memory describing the current
// plug-in state for saving.
// To restore the state at a later stage, the same data is passed
// back to setChunk.
byte[] chunkData = fxp.ChunkDataByteArray;
bool beginSetProgramResult = PluginContext.PluginCommandStub.BeginSetProgram();
int iResult = PluginContext.PluginCommandStub.SetChunk(chunkData, true);
bool endSetProgramResult = PluginContext.PluginCommandStub.EndSetProgram();
} else {
// Alternatively, when not using chunk, the Host will simply
// save all parameter values.
float[] parameters = fxp.Parameters;
bool beginSetProgramResult = PluginContext.PluginCommandStub.BeginSetProgram();
for (int i = 0; i < parameters.Length; i++) {
PluginContext.PluginCommandStub.SetParameter(i, parameters[i]);
}
bool endSetProgramResult = PluginContext.PluginCommandStub.EndSetProgram();
}
}
}
