_ak_bank_read_helpers_8h

Wwise SDK 2019.2.15

 /*******************************************************************************

 The content of this file includes portions of the AUDIOKINETIC Wwise Technology

 released in source code form as part of the SDK installer package.

 Commercial License Usage

 Licensees holding valid commercial licenses to the AUDIOKINETIC Wwise Technology

 may use this file in accordance with the end user license agreement provided 

 with the software or, alternatively, in accordance with the terms contained in a

 written agreement between you and Audiokinetic Inc.

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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 

 Apache License. You may obtain a copy of the Apache License at 

 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.

   Version: <VERSION>  Build: <BUILDNUMBER>

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 #ifndef _AK_BANKREADHELPERS_H_

 #define _AK_BANKREADHELPERS_H_

 namespace AK

 {

     template< typename T >

     inline T ReadUnaligned(const AkUInt8* in_pVal)

     {

 #if defined(__GNUC__)

         typedef T __attribute__((aligned(1))) UnalignedT;

         return *reinterpret_cast<const UnalignedT *>(in_pVal);

 #elif defined(_MSC_VER)  && !defined(AK_CPU_X86)

         return *reinterpret_cast<const T __unaligned *>(in_pVal);  // __unaligned not supported on 32-bit x86

 #else

         return *reinterpret_cast<const T *>(in_pVal);

 #endif

     }

     template< typename T >

     inline void WriteUnaligned(AkUInt8* out_pVal, const T in_val)

     {

 #if defined(__GNUC__)

     #if defined(__has_warning)

         #if __has_warning("-Walign-mismatch")

             #define __IGNORE_RECENT_CLANG_WARNINGS

             #pragma clang diagnostic push

             #pragma clang diagnostic ignored "-Walign-mismatch"

         #endif

     #endif

         typedef T __attribute__((aligned(1))) UnalignedT;

         *reinterpret_cast<UnalignedT *>(out_pVal) = in_val;

     #ifdef __IGNORE_RECENT_CLANG_WARNINGS

         #undef __IGNORE_RECENT_CLANG_WARNINGS

         #pragma clang diagnostic pop

     #endif

 #elif defined(_MSC_VER) && !defined(AK_CPU_X86)

         *reinterpret_cast<T __unaligned *>(out_pVal) = in_val; // __unaligned not supported on 32-bit x86

 #else

         *reinterpret_cast<T *>(out_pVal) = in_val;

 #endif

     }

     /// Read data from bank and advance pointer.

     template< typename T >

     inline T ReadBankData(

         AkUInt8*& in_rptr

 #ifdef _DEBUG

         , AkUInt32& in_rSize

 #endif

     )

     {

         T l_Value = ReadUnaligned<T>(in_rptr);

         in_rptr += sizeof(T);

 #ifdef _DEBUG

         in_rSize -= sizeof(T);

 #endif

         return l_Value;

     }

     template< typename T >

     inline T ReadVariableSizeBankData(

         AkUInt8*& in_rptr

 #ifdef _DEBUG

         , AkUInt32& in_rSize

 #endif

     )

     {

         AkUInt32 l_Value = 0;

         AkUInt8 currentByte = *in_rptr;

         ++in_rptr;

 #ifdef _DEBUG

         --in_rSize;

 #endif

         l_Value = (currentByte & 0x7F);

         while (0x80 & currentByte)

         {

             currentByte = *in_rptr;

             ++in_rptr;

 #ifdef _DEBUG

             --in_rSize;

 #endif

             l_Value = l_Value << 7;

             l_Value |= (currentByte & 0x7F);

         }

         return (T)l_Value;

     }

     inline char * ReadBankStringUtf8(

         AkUInt8*& in_rptr

 #ifdef _DEBUG

         , AkUInt32& in_rSize

 #endif

         , AkUInt32& out_uStringSize)

     {

         out_uStringSize = ReadBankData<AkUInt32>(in_rptr

 #ifdef _DEBUG

             , in_rSize

 #endif

             );

         char * pString = 0;

         if (out_uStringSize > 0)

         {

             pString = reinterpret_cast<char*>(in_rptr);

             in_rptr += out_uStringSize;

 #ifdef _DEBUG

             in_rSize -= out_uStringSize;

 #endif

         }

         return pString;

     }

 }

 #ifdef _DEBUG

 /// Read and return bank data of a given type, incrementing running pointer and decrementing block size for debug tracking purposes

 #define READBANKDATA( _Type, _Ptr, _Size )      \

         AK::ReadBankData<_Type>( _Ptr, _Size )

 #define READVARIABLESIZEBANKDATA( _Type, _Ptr, _Size )      \

         AK::ReadVariableSizeBankData<_Type>( _Ptr, _Size )

 /// Read and return non-null-terminatd UTF-8 string stored in bank, and its size.

 #define READBANKSTRING_UTF8( _Ptr, _Size, _out_StringSize )     \

         AK::ReadBankStringUtf8( _Ptr, _Size, _out_StringSize )

 /// Read and return non-null-terminatd string stored in bank, and its size.

 #define READBANKSTRING( _Ptr, _Size, _out_StringSize )      \

         AK::ReadBankStringUtf8( _Ptr, _Size, _out_StringSize ) //same as UTF-8 for now.

 /// Skip over some bank data  of a given type, incrementing running pointer and decrementing block size for debug tracking purposes

 #define SKIPBANKDATA( _Type, _Ptr, _Size )      \

         ( _Ptr ) += sizeof( _Type );    \

         ( _Size ) -= sizeof( _Type )

 /// Skip over some bank data by a given size in bytes, incrementing running pointer and decrementing block size for debug tracking purposes

 #define SKIPBANKBYTES( _NumBytes, _Ptr, _Size ) \

         ( _Ptr ) += _NumBytes;      \

         ( _Size ) -= _NumBytes

 #else

 /// Read and return bank data of a given type, incrementing running pointer and decrementing block size for debug tracking purposes

 #define READBANKDATA( _Type, _Ptr, _Size )      \

         AK::ReadBankData<_Type>( _Ptr )

 #define READVARIABLESIZEBANKDATA( _Type, _Ptr, _Size )      \

         AK::ReadVariableSizeBankData<_Type>( _Ptr )

 #define READBANKSTRING_UTF8( _Ptr, _Size, _out_StringSize )     \

         AK::ReadBankStringUtf8( _Ptr, _out_StringSize )

 #define READBANKSTRING( _Ptr, _Size, _out_StringSize )      \

         AK::ReadBankStringUtf8( _Ptr, _out_StringSize )

 /// Skip over some bank data  of a given type, incrementing running pointer and decrementing block size for debug tracking purposes

 #define SKIPBANKDATA( _Type, _Ptr, _Size )      \

         ( _Ptr ) += sizeof( _Type )

 /// Skip over some bank data by a given size in bytes, incrementing running pointer and decrementing block size for debug tracking purposes

 #define SKIPBANKBYTES( _NumBytes, _Ptr, _Size ) \

         ( _Ptr ) += _NumBytes;

 #endif

 #define GETBANKDATABIT( _Data, _Shift ) \

     (((_Data) >> (_Shift)) & 0x1)

 /// Helper macro to determine whether the full content of a block of memory was properly parsed

 #ifdef _DEBUG

     #define CHECKBANKDATASIZE( _DATASIZE_, _ERESULT_ ) AKASSERT( _DATASIZE_ == 0 || _ERESULT_ != AK_Success );

 #else

     #define CHECKBANKDATASIZE(_DATASIZE_, _ERESULT_ )

 #endif

 #endif //_AK_BANKREADHELPERS_H_