Initial release

engine/vendor/vst3sdk/public.sdk/source/vst/vsthelpers.h

@@ -0,0 +1,73 @@
+//------------------------------------------------------------------------
+// Project     : VST SDK
+//
+// Category    : Helpers
+// Filename    : public.sdk/source/vst/vsthelpers.h
+// Created by  : Steinberg, 11/2018
+// Description : common defines
+//
+//-----------------------------------------------------------------------------
+// This file is part of a Steinberg SDK. It is subject to the license terms
+// in the LICENSE file found in the top-level directory of this distribution
+// and at www.steinberg.net/sdklicenses.
+// No part of the SDK, including this file, may be copied, modified, propagated,
+// or distributed except according to the terms contained in the LICENSE file.
+//-----------------------------------------------------------------------------
+
+#pragma once
+#include "pluginterfaces/base/funknownimpl.h"
+#include "pluginterfaces/base/ibstream.h"
+#include "pluginterfaces/base/ustring.h"
+#include "pluginterfaces/vst/ivstattributes.h"
+#include "pluginterfaces/vst/vstpresetkeys.h"
+
+#include <cstring>
+
+//------------------------------------------------------------------------
+namespace Steinberg {
+namespace Vst {
+namespace Helpers {
+//------------------------------------------------------------------------
+/** Helpers */
+//------------------------------------------------------------------------
+
+//------------------------------------------------------------------------
+/** Retrieve from a IBStream the state type, here the StateType::kProject
+	return kResultTrue if the state is coming from a project,
+	return kResultFalse if the state is coming from a preset,
+	return kNotImplemented if the host does not implement such feature
+*/
+inline tresult isProjectState (IBStream* state)
+{
+	if (!state)
+		return kInvalidArgument;
+
+	auto stream = U::cast<IStreamAttributes> (state);
+	if (!stream)
+		return kNotImplemented;
+
+	if (IAttributeList* list = stream->getAttributes ())
+	{
+		// get the current type (project/Default..) of this state
+		String128 string = {0};
+		if (list->getString (PresetAttributes::kStateType, string, 128 * sizeof (TChar)) ==
+		    kResultTrue)
+		{
+			UString128 tmp (string);
+			char ascii[128];
+			tmp.toAscii (ascii, 128);
+			if (strncmp (ascii, StateType::kProject, strlen (StateType::kProject)) == 0)
+			{
+				return kResultTrue;
+			}
+			return kResultFalse;
+		}
+	}
+	return kNotImplemented;
+}
+/**@}*/
+
+//------------------------------------------------------------------------
+} // namespace Helpers
+} // namespace Vst
+} // namespace Steinberg