From 15740faf9fe9fe4be08965098bbf2947e096aeeb Mon Sep 17 00:00:00 2001
From: chai <chaifix@163.com>
Date: Wed, 14 Aug 2019 22:50:43 +0800
Subject: +Unity Runtime code

---
 .../TransferFunctions/StreamedBinaryRead.h         | 174 +++++++++++++++++++++
 1 file changed, 174 insertions(+)
 create mode 100644 Runtime/Serialize/TransferFunctions/StreamedBinaryRead.h

(limited to 'Runtime/Serialize/TransferFunctions/StreamedBinaryRead.h')

diff --git a/Runtime/Serialize/TransferFunctions/StreamedBinaryRead.h b/Runtime/Serialize/TransferFunctions/StreamedBinaryRead.h
new file mode 100644
index 0000000..81a015c
--- /dev/null
+++ b/Runtime/Serialize/TransferFunctions/StreamedBinaryRead.h
@@ -0,0 +1,174 @@
+#ifndef STREAMEDBINARYREAD_H
+#define STREAMEDBINARYREAD_H
+
+#include "Runtime/Serialize/TransferFunctions/TransferBase.h"
+#include "Runtime/Serialize/CacheWrap.h"
+#include "Runtime/Serialize/SwapEndianBytes.h"
+
+
+template<bool kSwapEndianess>
+class StreamedBinaryRead : public TransferBase
+{
+	CachedReader	m_Cache;
+
+	friend class MonoBehaviour;
+
+public:
+
+	CachedReader& Init (int flags)	{ m_UserData = NULL; m_Flags = flags; return m_Cache; }
+
+	bool IsReading ()                 { return true; }
+	bool IsReadingPPtr ()             { return true; }
+	bool NeedsInstanceIDRemapping ()          { return m_Flags & kNeedsInstanceIDRemapping; }
+	bool ConvertEndianess ()          { return kSwapEndianess; }
+
+	bool DidReadLastProperty ()       { return true; }
+	bool DidReadLastPPtrProperty ()   { return true; }
+
+	void EnableResourceImage (ActiveResourceImage targetResourceImage) { m_Cache.BeginResourceImage(targetResourceImage); }
+	bool ReadStreamingInfo(StreamingInfo* streamingInfo);
+
+	bool ShouldChannelOverride ();
+	CachedReader& GetCachedReader () { return m_Cache; }
+
+	const char* GetSerializedFilePathName() { return m_Cache.GetSerializedFilePathName(); }
+
+	template<class T>
+	void Transfer (T& data, const char* name, TransferMetaFlags metaFlag = kNoTransferFlags);
+	template<class T>
+	void TransferWithTypeString (T& data, const char* name, const char* typeName, TransferMetaFlags metaFlag = kNoTransferFlags);
+
+	void TransferTypeless (unsigned* byteSize, const char* name, TransferMetaFlags metaFlag = kNoTransferFlags);
+
+	// markerID is the id that was given by TransferTypeless.
+	// optional copyData: is a pointer to where the data will be written or read from
+	void TransferTypelessData (unsigned byteSize, void* copyData, int metaData = 0);
+
+	/// Reads byteSize bytes into data. This may onle be used if UseOptimizedReading returns true.
+	void EXPORT_COREMODULE ReadDirect (void* data, int byteSize);
+
+	void EXPORT_COREMODULE Align ();
+
+	template<class T>
+	void TransferBasicData (T& data);
+
+	template<class T>
+	void TransferPtr (bool, ReduceCopyData*){}
+
+	template<class T>
+	void TransferSTLStyleArray (T& data, TransferMetaFlags metaFlag = kNoTransferFlags);
+
+	template<class T>
+	void TransferSTLStyleMap (T& data, TransferMetaFlags metaFlag = kNoTransferFlags);
+};
+
+template <bool kSwapEndianess>
+bool StreamedBinaryRead<kSwapEndianess>::ReadStreamingInfo(StreamingInfo* streamingInfo)
+{
+	Assert(streamingInfo != NULL);
+
+	if (!m_Cache.IsReadingResourceImage())
+		return false;
+
+	// Read the size & offset values from the serialized file
+	// The size & offset describes where the data is in the streamed file
+	UInt32 offset, size;
+	Transfer (size, "ri_size");
+	Transfer (offset, "ri_offset");
+
+	m_Cache.GetStreamingInfo (offset, size, streamingInfo);
+	return true;
+}
+
+
+
+template<bool kSwapEndianess>
+template<class T>
+void StreamedBinaryRead<kSwapEndianess>::TransferSTLStyleArray (T& data, TransferMetaFlags /*metaFlags*/)
+{
+	if (m_Cache.IsReadingResourceImage())
+	{
+		// Read the size & offset from the serialized file
+		UInt32 offset, size;
+		Transfer (size, "ri_size");
+		Transfer (offset, "ri_offset");
+
+		// Fetch the pointer from the pre-loaded resource image.
+		unsigned bufferSize = sizeof (typename T::value_type) * size;
+		UInt8* buffer = m_Cache.FetchResourceImageData (offset, bufferSize);
+		SerializeTraits<T>::resource_image_assign_external (data, buffer, buffer + bufferSize);
+
+		m_Cache.EndResourceImage();
+	}
+	else
+	{
+		SInt32 size;
+		Transfer (size, "size");
+
+		SerializeTraits<T>::ResizeSTLStyleArray (data, size);
+
+		if (!kSwapEndianess && SerializeTraits<typename T::value_type>::AllowTransferOptimization () && SerializeTraits<T>::IsContinousMemoryArray ())
+		{
+			//AssertIf (size != distance (data.begin (), data.end ()));
+			if( size != 0 )
+				ReadDirect (&*data.begin (), size * sizeof (typename T::value_type));
+		}
+		else
+		{
+			typename T::iterator i;
+			typename T::iterator end = data.end ();
+			//AssertIf (size != distance (data.begin (), end));
+			for (i = data.begin ();i != end;++i)
+				Transfer (*i, "data");
+		}
+	}
+}
+
+template<bool kSwapEndianess>
+template<class T>
+void StreamedBinaryRead<kSwapEndianess>::TransferSTLStyleMap (T& data, TransferMetaFlags)
+{
+	SInt32 size;
+	Transfer (size, "size");
+
+	// maps value_type is: pair<const First, Second>
+	// So we have to write to maps non-const value type
+	typename NonConstContainerValueType<T>::value_type p;
+
+	data.clear ();
+	for (int i=0;i<size;i++)
+	{
+		Transfer (p, "data");
+		data.insert (p);
+	}
+}
+
+template<bool kSwapEndianess>
+template<class T>
+void StreamedBinaryRead<kSwapEndianess>::Transfer (T& data, const char*, TransferMetaFlags)
+{
+	SerializeTraits<T>::Transfer (data, *this);
+}
+
+template<bool kSwapEndianess>
+template<class T>
+void StreamedBinaryRead<kSwapEndianess>::TransferWithTypeString (T& data, const char*, const char*, TransferMetaFlags)
+{
+	SerializeTraits<T>::Transfer (data, *this);
+}
+
+template<bool kSwapEndianess>
+template<class T> inline
+void StreamedBinaryRead<kSwapEndianess>::TransferBasicData (T& data)
+{
+	AssertIf (sizeof (T) > 8);
+	m_Cache.Read (data);
+	if (kSwapEndianess)
+	{
+		SwapEndianBytes (data);
+	}
+}
+#endif
+
+
+
-- 
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