tetrees/Plugins/Wwise/ThirdParty/include/AK/SoundEngine/Common/AkBytesCount.h

/*******************************************************************************
The content of this file includes portions of the AUDIOKINETIC Wwise Technology
released in source code form as part of the SDK installer package.

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may use this file in accordance with the end user license agreement provided 
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  Copyright (c) 2023 Audiokinetic Inc.
*******************************************************************************/

// AkBytesCount.h

/// \file 
/// IReadBytes / IWriteBytes implementation on a growing memory buffer. This
/// version uses the AK::MemoryMgr memory pools.

#pragma once

#include <AK/IBytes.h>
#include <AK/SoundEngine/Common/AkSoundEngineExport.h>
#include <AK/Tools/Common/AkBankReadHelpers.h>

namespace AK
{
	class ReadBytesSkip
		: public AK::IReadBytes
	{
	public:

		AKSOUNDENGINE_API ReadBytesSkip();
		AKSOUNDENGINE_API ReadBytesSkip(
			const void * in_pBytes, 
			AkInt32 in_cBytes
			);
		AKSOUNDENGINE_API virtual ~ReadBytesSkip();

		// IReadBytes implementation

		AKSOUNDENGINE_API virtual bool ReadBytes(
			void * in_pData, 
			AkInt32 in_cBytes, 
			AkInt32 & out_cRead
			);

		// Public methods

		AKSOUNDENGINE_API void Attach(
			const void * in_pBytes, 
			AkInt32 in_cBytes
			);

		AKSOUNDENGINE_API AkInt32 Count();

	private:
		AkInt32   m_cBytes;
		const AkUInt8 * m_pBytes;
		AkInt32   m_cPos;
	};

	class WriteBytesCount
		: public AK::IWriteBuffer
	{
	public:
	
		AKSOUNDENGINE_API WriteBytesCount();
		AKSOUNDENGINE_API virtual ~WriteBytesCount();
	
		// IWriteBytes implementation

		AKSOUNDENGINE_API virtual bool WriteBytes(
			const void * in_pData, 
			AkInt32 in_cBytes, 
			AkInt32& out_cWritten);
	
		// IWriteBuffer implementation

		AKSOUNDENGINE_API virtual bool Reserve(
			AkInt32 in_cBytes
			);

		AKSOUNDENGINE_API virtual AkInt32 Count() const;

		AKSOUNDENGINE_API virtual void SetCount(
			AkInt32 in_cBytes
			);

		AKSOUNDENGINE_API virtual AkUInt8 * Bytes() const;

		AKSOUNDENGINE_API virtual AkUInt8 * Detach();
	
		AKSOUNDENGINE_API virtual void Clear();

		template<class T>
		bool Write(const T & in_data)
		{
			m_cPos += sizeof(T);
			return true;
		}
	
	private:
		bool Grow(
			AkInt32 in_cBytes
		);
	
		AkInt32	m_cPos;
	};
}