protected override VstPluginInfo CreatePluginInfo(IVstPlugin plugin)
{
var info = base.CreatePluginInfo(plugin);
info.ParameterCount = Plugin.ParametersManager.Parameters.Count();
info.ProgramCount = Plugin.ParametersManager.Programs.Count();
return(info);
}
/// <summary>
/// Constructs a new instance of the host class based on the <paramref name="hostCmdStub"/>
/// (from Interop) and a reference to the current <paramref name="plugin"/>.
/// </summary>
/// <param name="hostCmdStub">Must not be null.</param>
/// <param name="plugin">Must not be null.</param>
/// <exception cref="ArgumentNullException">Thrown when <paramref name="hostCmdStub"/> or
/// <paramref name="plugin"/> is not set to an instance of an object.</exception>
public VstHost(IVstHostCommandStub hostCmdStub, IVstPlugin plugin)
{
Throw.IfArgumentIsNull(hostCmdStub, "hostCmdStub");
Throw.IfArgumentIsNull(plugin, "plugin");
HostCommandStub = hostCmdStub;
Plugin = plugin;
_intfMgr = new VstHostInterfaceManager(this);
}
/// <summary>
/// Constructs a new instance of the host class based on the <paramref name="hostCmdProxy"/>
/// (from Interop) and a reference to the current <paramref name="plugin"/>.
/// </summary>
/// <param name="hostCmdProxy">Must not be null.</param>
/// <param name="plugin">Must not be null.</param>
/// <exception cref="ArgumentNullException">Thrown when <paramref name="hostCmdProxy"/> or
/// <paramref name="plugin"/> is not set to an instance of an object.</exception>
public VstHost(IVstHostCommandProxy hostCmdProxy, IVstPlugin plugin)
{
Throw.IfArgumentIsNull(hostCmdProxy, nameof(hostCmdProxy));
Throw.IfArgumentIsNull(plugin, nameof(plugin));
HostCommandProxy = hostCmdProxy;
Plugin = plugin;
_automation = new VstHostAutomation(this);
_sequencer = new VstHostSequencer(this);
_shell = new VstHostShell(this);
_midiProcessor = new VstHostMidiProcessor(this);
}
/// <summary>
/// Disposes all members, cascades the Dispose call.
/// </summary>
public void Dispose()
{
PluginInfo = null;
if (Plugin != null)
{
Plugin.Dispose();
Plugin = null;
}
if (Host != null)
{
Host.Dispose();
Host = null;
}
}
/// <summary>
/// Disposes all members, cascades the Dispose call.
/// </summary>
public void Dispose()
{
PluginInfo = null;
if (Plugin != null)
{
Plugin.Dispose();
Plugin = null;
}
if (Host != null)
{
Host.Dispose();
Host = null;
}
}
/// <summary>
/// Called by the Interop loader to retrieve the plugin information.
/// </summary>
/// <param name="hostCmdStub">Must not be null.</param>
/// <returns>Returns a fully populated <see cref="VstPluginInfo"/> instance. Never returns null.</returns>
/// <remarks>Override <see cref="CreatePluginInfo"/> to change the default behavior of how the plugin info is built.</remarks>
public VstPluginInfo?GetPluginInfo(IVstHostCommandProxy hostCmdStub)
{
IVstPlugin plugin = CreatePluginInstance();
if (plugin != null)
{
if (plugin is IConfigurable config)
{
config.Configuration = this.PluginConfiguration;
}
_pluginCtx = new VstPluginContext(
plugin, new Host.VstHost(hostCmdStub, plugin), CreatePluginInfo(plugin));
Commands = CreatePluginCommands(_pluginCtx);
return(_pluginCtx.PluginInfo);
}
return(null);
}
/// <summary>
/// Creates summary info based on the <paramref name="plugin"/>.
/// </summary>
/// <param name="plugin">Must not be null.</param>
/// <returns>Never returns null.</returns>
/// <remarks>Override to add or change behavior.</remarks>
protected virtual VstPluginInfo CreatePluginInfo(IVstPlugin plugin)
{
VstPluginInfo pluginInfo = new VstPluginInfo();
var audioProcessor = plugin.GetInstance <IVstPluginAudioProcessor>();
// determine flags
if (plugin.Supports <IVstPluginEditor>())
{
pluginInfo.Flags |= VstPluginFlags.HasEditor;
}
if (audioProcessor != null)
{
pluginInfo.Flags |= VstPluginFlags.CanReplacing;
}
if (plugin.Supports <IVstPluginAudioPrecisionProcessor>())
{
pluginInfo.Flags |= VstPluginFlags.CanDoubleReplacing;
}
if (plugin.Supports <IVstPluginPersistence>())
{
pluginInfo.Flags |= VstPluginFlags.ProgramChunks;
}
if (audioProcessor != null && plugin.Supports <IVstMidiProcessor>())
{
pluginInfo.Flags |= VstPluginFlags.IsSynth;
}
if ((plugin.Capabilities & VstPluginCapabilities.NoSoundInStop) > 0)
{
pluginInfo.Flags |= VstPluginFlags.NoSoundInStop;
}
// basic plugin info
pluginInfo.InitialDelay = plugin.InitialDelay;
pluginInfo.PluginID = plugin.PluginID;
pluginInfo.PluginVersion = plugin.ProductInfo.Version;
// audio processing info
if (audioProcessor != null)
{
pluginInfo.AudioInputCount = audioProcessor.InputCount;
pluginInfo.AudioOutputCount = audioProcessor.OutputCount;
}
// parameter info
IVstPluginParameters?pluginParameters = plugin.GetInstance <IVstPluginParameters>();
if (pluginParameters != null)
{
pluginInfo.ParameterCount = pluginParameters.Parameters.Count;
}
// program info
IVstPluginPrograms?pluginPrograms = plugin.GetInstance <IVstPluginPrograms>();
if (pluginPrograms != null)
{
pluginInfo.ProgramCount = pluginPrograms.Programs.Count;
}
return(pluginInfo);
}
internal VstPluginContext(IVstPlugin plugin, VstHost host, VstPluginInfo info)
{
Plugin = plugin ?? throw new ArgumentNullException(nameof(plugin));
_host = host ?? throw new ArgumentNullException(nameof(host));
PluginInfo = info ?? throw new ArgumentNullException(nameof(plugin));
}
/// <summary>
/// Creates summary info based on the <paramref name="plugin"/>.
/// </summary>
/// <param name="plugin">Must not be null.</param>
/// <returns>Never returns null.</returns>
/// <remarks>Override to add or change behavior.</remarks>
protected virtual VstPluginInfo CreatePluginInfo(IVstPlugin plugin)
{
VstPluginInfo pluginInfo = new VstPluginInfo();
IVstPluginAudioProcessor audioProcessor = plugin.GetInstance<IVstPluginAudioProcessor>();
// determine flags
if (plugin.Supports<IVstPluginEditor>())
pluginInfo.Flags |= VstPluginFlags.HasEditor;
if (audioProcessor != null)
pluginInfo.Flags |= VstPluginFlags.CanReplacing;
if (plugin.Supports<IVstPluginAudioPrecisionProcessor>())
pluginInfo.Flags |= VstPluginFlags.CanDoubleReplacing;
if (plugin.Supports<IVstPluginPersistence>())
pluginInfo.Flags |= VstPluginFlags.ProgramChunks;
if (audioProcessor != null && plugin.Supports<IVstMidiProcessor>())
pluginInfo.Flags |= VstPluginFlags.IsSynth;
if ((plugin.Capabilities & VstPluginCapabilities.NoSoundInStop) > 0)
pluginInfo.Flags |= VstPluginFlags.NoSoundInStop;
// basic plugin info
pluginInfo.InitialDelay = plugin.InitialDelay;
pluginInfo.PluginID = plugin.PluginID;
pluginInfo.PluginVersion = plugin.ProductInfo.Version;
// audio processing info
if (audioProcessor != null)
{
pluginInfo.AudioInputCount = audioProcessor.InputCount;
pluginInfo.AudioOutputCount = audioProcessor.OutputCount;
}
// parameter info
IVstPluginParameters pluginParameters = plugin.GetInstance<IVstPluginParameters>();
if (pluginParameters != null)
pluginInfo.ParameterCount = pluginParameters.Parameters.Count;
// program info
IVstPluginPrograms pluginPrograms = plugin.GetInstance<IVstPluginPrograms>();
if (pluginPrograms != null)
pluginInfo.ProgramCount = pluginPrograms.Programs.Count;
return pluginInfo;
}
