_ak_bytes_mem_8h

Wwise SDK 2024.1.0

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 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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 Alternatively, this file may be used under the Apache License, Version 2.0 (the 
 "Apache License"); you may not use this file except in compliance with the 
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 http://www.apache.org/licenses/LICENSE-2.0.
  
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 under the Apache License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES
 OR CONDITIONS OF ANY KIND, either express or implied. See the Apache License for
 the specific language governing permissions and limitations under the License.
  
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 // AkBytesMem.h
  
 /// \file 
 /// IReadBytes / IWriteBytes implementation on a growing memory buffer. This
 /// version uses the AK::MemoryMgr allocator.
  
 #pragma once
  
 #include <AK/IBytes.h>
 #include <AK/SoundEngine/Common/AkSoundEngineExport.h>
 #include <AK/Tools/Common/AkBankReadHelpers.h>
  
 namespace AK
 {
     class ReadBytesMem
         : public AK::IReadBytes
     {
     public:
  
         AKSOUNDENGINE_API ReadBytesMem();
         AKSOUNDENGINE_API ReadBytesMem(
             const void * in_pBytes, 
             AkInt32 in_cBytes
             );
         AKSOUNDENGINE_API virtual ~ReadBytesMem();
  
         // 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
             );
  
     private:
         AkInt32   m_cBytes;
         const AkUInt8 * m_pBytes;
  
         AkInt32   m_cPos;
     };
  
     class WriteBytesMem
         : public AK::IWriteBuffer
     {
     public:
     
         AKSOUNDENGINE_API WriteBytesMem();
         AKSOUNDENGINE_API virtual ~WriteBytesMem();
     
         // 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 AkInt32 Size() const;
  
         AKSOUNDENGINE_API virtual AkUInt8 * Bytes() const;
  
         AKSOUNDENGINE_API virtual AkUInt8 * Detach();
     
         AKSOUNDENGINE_API virtual void Clear();
     
         // Public methods
  
         AKSOUNDENGINE_API void SetMemPool( AkMemPoolId in_pool );
  
         AKSOUNDENGINE_API bool HasValidMemPool();
  
         // Reserves space for writing in_cBytes and returns the location, advancing the write pointer.
         AkUInt8* GetWritePtr(AkInt32 in_cBytes)
         {
             AkInt32 cPos = m_cPos;
             AkInt32 cNewPos = cPos + in_cBytes;
  
             if ((m_cBytes >= cNewPos) || Grow(cNewPos))
             {
                 m_cPos = cNewPos;
                 return m_pBytes + cPos;
             }
             else
                 return nullptr;
         }
  
         template<class T>
         T* GetWritePtr()
         {
             static_assert(alignof(T) == 1, "T must have an alignment of 1 to avoid crashes due to unaligned writes on 32-bit ARM targets. Use Write<T> instead.");
             return reinterpret_cast<T*>(GetWritePtr(sizeof(T)));
         }
  
         template<class T>
         bool Write(const T & in_data)
         {
             if (AkUInt8* pWrite = GetWritePtr(sizeof(T)))
             {
                 AK::WriteUnaligned<T>(pWrite, in_data);
                 return true;
             }
             else
                 return false;
         }
     
     private:
         bool Grow(
             AkInt32 in_cBytes
         );
  
         AkInt32     m_cBytes;
         AkUInt8 *   m_pBytes;
     
         AkInt32 m_cPos;
     
         AkMemPoolId m_pool;
     };
  
     class WriteBytesBuffer
         : public AK::IWriteBytes
     {
     public:
  
         AKSOUNDENGINE_API WriteBytesBuffer();
  
         AKSOUNDENGINE_API virtual ~WriteBytesBuffer();
  
         AKSOUNDENGINE_API void SetBuffer(AkUInt8* in_pBytes, AkInt32 in_cSize);
  
         // IWriteBytes implementation
  
         AKSOUNDENGINE_API virtual bool WriteBytes(
             const void* in_pData,
             AkInt32 in_cBytes,
             AkInt32& out_cWritten);
         
         AKSOUNDENGINE_API AkInt32 GetPos() const;
  
         AKSOUNDENGINE_API void Clear();
  
     private:
  
         AkUInt8* m_pBytes;
         AkInt32 m_cSize;
         AkInt32 m_cPos;
     };
 }