Initial release

engine/vendor/vst3sdk/public.sdk/source/common/memorystream.h

@@ -0,0 +1,59 @@
+//-----------------------------------------------------------------------------
+// Project     : SDK Core
+//
+// Category    : Common Classes
+// Filename    : public.sdk/source/common/memorystream.h
+// Created by  : Steinberg, 03/2008
+// Description : IBStream Implementation for memory blocks
+//
+//-----------------------------------------------------------------------------
+// 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/ibstream.h"
+
+namespace Steinberg {
+
+//------------------------------------------------------------------------
+/** Memory based Stream for IBStream implementation (using malloc).
+\ingroup sdkBase
+*/
+class MemoryStream : public IBStream
+{
+public:
+	//------------------------------------------------------------------------
+	MemoryStream ();
+	MemoryStream (void* memory, TSize memorySize); 	///< reuse a given memory without getting ownership
+	virtual ~MemoryStream ();
+
+	//---IBStream---------------------------------------
+	tresult PLUGIN_API read  (void* buffer, int32 numBytes, int32* numBytesRead) SMTG_OVERRIDE;
+	tresult PLUGIN_API write (void* buffer, int32 numBytes, int32* numBytesWritten) SMTG_OVERRIDE;
+	tresult PLUGIN_API seek  (int64 pos, int32 mode, int64* result) SMTG_OVERRIDE;
+	tresult PLUGIN_API tell  (int64* pos) SMTG_OVERRIDE;
+
+	TSize getSize () const;		///< returns the current memory size
+	void setSize (TSize size);	///< set the memory size, a realloc will occur if memory already used
+	char* getData () const;		///< returns the memory pointer
+	char* detachData ();	///< returns the memory pointer and give up ownership
+	bool truncate ();		///< realloc to the current use memory size if needed
+	bool truncateToCursor ();	///< truncate memory at current cursor position
+
+	//------------------------------------------------------------------------
+	DECLARE_FUNKNOWN_METHODS
+protected:
+	char* memory;				// memory block
+	TSize memorySize;			// size of the memory block
+	TSize size;					// size of the stream
+	int64 cursor;				// stream pointer
+	bool ownMemory;				// stream has allocated memory itself
+	bool allocationError;       // stream invalid
+};
+
+} // namespace