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#ifndef CACHEWRAP_H
#define CACHEWRAP_H
#include "Configuration/UnityConfigure.h"
#include "Runtime/Serialize/FileCache.h"
#include "Runtime/Serialize/SerializationMetaFlags.h"
class CachedWriter
{
struct ActiveWriter
{
UInt8* cachePosition;
UInt8* cacheStart;
UInt8* cacheEnd;
SInt32 block;
CacheWriterBase* cacheBase;
ActiveWriter () { cachePosition = NULL; cacheStart = NULL; cacheEnd = NULL; block = -1; cacheBase = NULL; }
size_t GetPosition () const;
};
ActiveWriter m_ActiveWriter;
#if UNITY_EDITOR
ActiveResourceImage m_ActiveResourceImageMode;
ActiveWriter m_DefaultWriter;
ActiveWriter m_ResourceImageWriters[kNbResourceImages];
#endif
static void InitActiveWriter (CachedWriter::ActiveWriter& activeWriter, CacheWriterBase& cacher);
void SetPosition (size_t position);
void EXPORT_COREMODULE UpdateWriteCache (const void* data, size_t size);
public:
void InitWrite (CacheWriterBase& cacher);
bool CompleteWriting ();
#if UNITY_EDITOR
void InitResourceImage (ActiveResourceImage index, CacheWriterBase& resourceImage);
void BeginResourceImage (ActiveResourceImage resourceImageType);
void EndResourceImage ();
bool IsWritingResourceImage () { return m_ActiveResourceImageMode > kResourceImageInactive; }
CacheWriterBase& GetCacheBase () { return *m_ActiveWriter.cacheBase; }
#endif
template<class T>
void Write (const T& data)
{
#if CHECK_SERIALIZE_ALIGNMENT
if (m_CheckSerializeAlignment)
{
SInt32 position = reinterpret_cast<SInt32>(m_ActiveWriter.cachePosition);
SInt32 size = sizeof(T);
SInt32 align = position % size;
if (align != 0)
{
ErrorString("Alignment error ");
}
}
#endif
if (m_ActiveWriter.cachePosition + sizeof (T) < m_ActiveWriter.cacheEnd)
{
*reinterpret_cast<T*> (m_ActiveWriter.cachePosition) = data;
m_ActiveWriter.cachePosition += sizeof (T);
}
else
UpdateWriteCache (&data, sizeof (data));
}
void Align4Write ();
void Write (const void* data, size_t size);
size_t GetPosition () const;
};
struct StreamingInfo
{
size_t offset;
size_t size;
std::string path;
bool IsValid () const { return !path.empty(); }
StreamingInfo () { offset = 0; size = 0; }
};
struct ResourceImage
{
UInt8* m_Data;
UInt32 m_Size;
std::string m_StreamingPath;
public:
ResourceImage (const std::string& path, bool stream);
~ResourceImage ();
UInt8* Fetch (size_t offset, size_t size)
{
Assert(m_Data != NULL);
Assert(size + offset <= m_Size);
return m_Data + offset;
}
const std::string& GetStreamingPath () { Assert(!m_StreamingPath.empty()); return m_StreamingPath; }
};
struct EXPORT_COREMODULE ResourceImageGroup
{
ResourceImage* resourceImages[kNbResourceImages];
ResourceImageGroup () { memset(this, 0, sizeof(ResourceImageGroup)); }
};
class EXPORT_COREMODULE CachedReader
{
private:
UInt8* m_CachePosition;
UInt8* m_CacheStart;
UInt8* m_CacheEnd;
CacheReaderBase* m_Cacher;
SInt32 m_Block;
size_t m_CacheSize;
size_t m_MinimumPosition;
size_t m_MaximumPosition;
bool m_OutOfBoundsRead;
ResourceImage* m_ActiveResourceImage;
ResourceImageGroup m_ResourceImageGroup;
void UpdateReadCache (void* data, size_t size);
CachedReader (const CachedReader& c);// undefined
CachedReader& operator = (const CachedReader& c);// undefined
void OutOfBoundsError (size_t position, size_t size);
void LockCacheBlockBounded();
public:
CachedReader ();
~CachedReader ();
void InitRead (CacheReaderBase& cacher, size_t position, size_t size);
void InitResourceImages (ResourceImageGroup& resourceImage);
size_t GetEndPosition () { return m_MaximumPosition; }
size_t End ();
template<class T>
void Skip ()
{
m_CachePosition += sizeof (T);
}
void Skip (int size);
UInt8* FetchResourceImageData (size_t offset, size_t size);
void GetStreamingInfo (size_t offset, size_t size, StreamingInfo* streamingInfo);
void BeginResourceImage (ActiveResourceImage index) { m_ActiveResourceImage = m_ResourceImageGroup.resourceImages[index]; }
void EndResourceImage () { m_ActiveResourceImage = NULL; }
bool IsReadingResourceImage () { return m_ActiveResourceImage != NULL; }
const char* GetSerializedFilePathName() { return m_Cacher->GetPathName().c_str(); }
template<class T>
void Read (T& data, size_t position)
{
m_CachePosition = m_CacheStart + position - m_Block * m_CacheSize;
if (m_CachePosition >= m_CacheStart && m_CachePosition + sizeof (data) <= m_CacheEnd)
{
data = *reinterpret_cast<T*> (m_CachePosition);
m_CachePosition += sizeof (T);
}
else
UpdateReadCache (&data, sizeof (data));
}
template<class T>
void Read (T& data)
{
if (m_CachePosition + sizeof (T) <= m_CacheEnd)
{
data = *reinterpret_cast<T*> (m_CachePosition);
m_CachePosition += sizeof (T);
}
else
UpdateReadCache (&data, sizeof (data));
}
void Align4Read ();
size_t GetPosition () const { return m_CachePosition - m_CacheStart + m_Block * m_CacheSize; }
void SetPosition (size_t position);
void SetAbsoluteMemoryPosition(UInt8* position) { m_CachePosition = position; }
UInt8* GetAbsoluteMemoryPosition() { return m_CachePosition; }
void Read (void* data, size_t size);
CacheReaderBase* GetCacher () const { return m_Cacher; }
};
inline UInt32 Align4 (UInt32 size)
{
UInt32 value = ((size + 3) >> 2) << 2;
return value;
}
inline UInt32 Align4LeftOver (UInt32 size)
{
return Align4(size) - size;
}
#endif
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