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authorAnton Novoselov <[email protected]>2017-08-01 12:53:38 +0300
committerAnton Novoselov <[email protected]>2017-08-01 12:53:38 +0300
commit236f03c0b9a4982328ed1201978f7f69d192d9b2 (patch)
treee486f2fa39dba203563895541e92c60ed3e25759 /sdk/extensions/serialization/source/NvBlastExtSerializationInternal.h
parentAdded screens to welcome page (diff)
downloadblast-236f03c0b9a4982328ed1201978f7f69d192d9b2.tar.xz
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Blast 1.1 release (windows / linux)
see docs/release_notes.txt for details
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+// This code contains NVIDIA Confidential Information and is disclosed to you
+// under a form of NVIDIA software license agreement provided separately to you.
+//
+// Notice
+// NVIDIA Corporation and its licensors retain all intellectual property and
+// proprietary rights in and to this software and related documentation and
+// any modifications thereto. Any use, reproduction, disclosure, or
+// distribution of this software and related documentation without an express
+// license agreement from NVIDIA Corporation is strictly prohibited.
+//
+// ALL NVIDIA DESIGN SPECIFICATIONS, CODE ARE PROVIDED "AS IS.". NVIDIA MAKES
+// NO WARRANTIES, EXPRESSED, IMPLIED, STATUTORY, OR OTHERWISE WITH RESPECT TO
+// THE MATERIALS, AND EXPRESSLY DISCLAIMS ALL IMPLIED WARRANTIES OF NONINFRINGEMENT,
+// MERCHANTABILITY, AND FITNESS FOR A PARTICULAR PURPOSE.
+//
+// Information and code furnished is believed to be accurate and reliable.
+// However, NVIDIA Corporation assumes no responsibility for the consequences of use of such
+// information or for any infringement of patents or other rights of third parties that may
+// result from its use. No license is granted by implication or otherwise under any patent
+// or patent rights of NVIDIA Corporation. Details are subject to change without notice.
+// This code supersedes and replaces all information previously supplied.
+// NVIDIA Corporation products are not authorized for use as critical
+// components in life support devices or systems without express written approval of
+// NVIDIA Corporation.
+//
+// Copyright (c) 2017 NVIDIA Corporation. All rights reserved.
+
+
+#pragma once
+
+#include "NvBlastExtSerialization.h"
+
+#include <cstring>
+
+#define ExtSerializerBoilerplate(_name, _description, _objectTypeID, _encodingID) \
+virtual const char* getName() const override { return _name; } \
+virtual const char* getDescription() const override { return _description; } \
+virtual uint32_t getObjectTypeID() const override { return _objectTypeID; } \
+virtual uint32_t getEncodingID() const override { return _encodingID; }
+
+
+#define ExtSerializerReadOnly(_name) \
+virtual bool isReadOnly() const override { return true; } \
+virtual uint64_t serializeIntoBuffer \
+( \
+ void*& buffer, \
+ ExtSerialization::BufferProvider& bufferProvider, \
+ const void* object, \
+ uint64_t offset = 0 \
+) override \
+{ \
+ NVBLAST_LOG_WARNING(#_name "::serializeIntoBuffer: ExtPxAsset_RAW serializer is read-only."); \
+ NV_UNUSED(buffer); \
+ NV_UNUSED(bufferProvider); \
+ NV_UNUSED(object); \
+ NV_UNUSED(offset); \
+ return 0; \
+}
+
+
+#define ExtSerializerDefaultFactoryAndRelease(_classname) \
+static ExtSerializer* create() \
+{ \
+ return NVBLAST_NEW(_classname) (); \
+} \
+virtual void release() override \
+{ \
+ NVBLAST_DELETE(this, _classname); \
+}
+
+
+namespace Nv
+{
+namespace Blast
+{
+
+/**
+Serializer internal interface
+*/
+class ExtSerializer
+{
+public:
+ virtual ~ExtSerializer() {}
+
+ /**
+ return the name of this serializer.
+ */
+ virtual const char* getName() const = 0;
+
+ /**
+ return a description of this serializer.
+ */
+ virtual const char* getDescription() const = 0;
+
+ /**
+ return an identifier for the type of object handled.
+ */
+ virtual uint32_t getObjectTypeID() const = 0;
+
+ /**
+ return an identifier for serialization format.
+ */
+ virtual uint32_t getEncodingID() const = 0;
+
+ /**
+ Whether or not this serializer supports writing. Legacy formats, for example, may not.
+
+ \return true iff this serialization does not support writing.
+ */
+ virtual bool isReadOnly() const { return false; }
+
+ /**
+ Deserialize from a buffer into a newly allocated object.
+
+ \param[in] buffer Pointer to the buffer to read.
+ \param[in] size Size of the buffer to read.
+ \return object pointer; returns null if failed to deserialize.
+ */
+ virtual void* deserializeFromBuffer(const void* buffer, uint64_t size) = 0;
+
+ /**
+ Serialize into a buffer. Allocates the buffer internally using the ExtSerialization::BufferProvider callack interface.
+
+ \param[out] buffer Pointer to the buffer created.
+ \param[in] bufferProvider The buffer provider callback interface to use.
+ \param[in] object Object pointer.
+
+ \return the number of bytes serialized into the buffer (zero if unsuccessful).
+ */
+ virtual uint64_t serializeIntoBuffer(void*& buffer, ExtSerialization::BufferProvider& bufferProvider, const void* object, uint64_t offset = 0) = 0;
+
+ /**
+ Release the serializer and free associated memory.
+ */
+ virtual void release() = 0;
+};
+
+
+/**
+Internal serialization manager interface
+*/
+class ExtSerializationInternal : public ExtSerialization
+{
+public:
+ /**
+ Internal interfaces to register and unregister a serializer, used by modules to automatically
+ register all of their serializers with a serialization manager.
+ */
+ virtual bool registerSerializer(ExtSerializer& serializer) = 0;
+ virtual bool unregisterSerializer(ExtSerializer& serializer) = 0;
+
+ /**
+ Find a registered serializer for the given object type and encoding.
+
+ \param[in] objectTypeID ID for the requested object type.
+ \param[in] encodingID ID for the requested encoding (see EncodingID).
+
+ \return a registered serializer if found, NULL otherwise.
+ */
+ virtual ExtSerializer* findSerializer(uint32_t objectTypeID, uint32_t encodingID) = 0;
+
+ //// Enums ////
+ enum { HeaderSize = 128 };
+};
+
+
+template<typename Factory, size_t N>
+size_t ExtSerializationLoadSet(Nv::Blast::ExtSerializationInternal& serialization, Factory(&factories)[N])
+{
+ size_t count = 0;
+
+ for (auto f : factories)
+ {
+ Nv::Blast::ExtSerializer* serializer = f();
+ if (serializer != nullptr)
+ {
+ if (serialization.registerSerializer(*serializer))
+ {
+ ++count;
+ }
+ else
+ {
+ NVBLAST_LOG_ERROR("Nv::Blast::ExtSerializationLoadSet: failed to register serailizer:");
+ NVBLAST_LOG_ERROR(serializer->getName());
+ serializer->release();
+ }
+ }
+ else
+ {
+ NVBLAST_LOG_ERROR("Nv::Blast::ExtSerializationLoadSet: failed to create serailizer.");
+ }
+ }
+
+ return count;
+}
+
+
+class ExtIStream
+{
+public:
+ enum Flags
+ {
+ LittleEndian = (1 << 0),
+ Fail = (1 << 1)
+ };
+
+ ExtIStream(const void* buffer, size_t size) : m_buf(reinterpret_cast<const char*>(buffer)), m_flags(0)
+ {
+ m_cur = m_buf;
+ m_end = m_buf + size;
+ const uint16_t x = LittleEndian;
+ m_flags = *reinterpret_cast<const char*>(&x);
+ }
+
+ bool advance(ptrdiff_t diff)
+ {
+ m_cur += diff;
+ if (m_cur < m_buf)
+ {
+ m_cur = m_buf;
+ m_flags |= Fail;
+ return false;
+ }
+ else
+ if (m_cur > m_end)
+ {
+ m_cur = m_end;
+ m_flags |= Fail;
+ return false;
+ }
+ return true;
+ }
+
+ const void* view()
+ {
+ return m_cur;
+ }
+
+ bool read(void* buffer, size_t size)
+ {
+ if (!canRead(size)) return false;
+ std::memcpy(buffer, m_cur, size);
+ m_cur += size;
+ return true;
+ }
+
+ size_t tellg() const { return m_cur - m_buf; }
+ size_t left() const { return m_end - m_cur; }
+
+ bool eof() const { return m_cur >= m_end; }
+ bool fail() const { return (m_flags & Fail) != 0; }
+
+private:
+ const char* m_buf;
+ const char* m_cur;
+ const char* m_end;
+ uint32_t m_flags;
+
+ bool isLittleEndian() const { return (m_flags & LittleEndian) != 0; }
+
+ bool canRead(size_t size) const { return m_cur + size <= m_end; }
+
+ template<typename T>
+ friend ExtIStream& operator >> (ExtIStream& s, T& x);
+};
+
+template<typename T>
+NV_INLINE ExtIStream& operator >> (ExtIStream& s, T& x)
+{
+ if (s.canRead(sizeof(T)))
+ {
+ if (s.isLittleEndian())
+ {
+ x = *reinterpret_cast<const T*>(s.m_cur);
+ s.m_cur += sizeof(T);
+ }
+ else
+ {
+ char* b = reinterpret_cast<char*>(&x) + sizeof(T);
+ for (size_t n = sizeof(T); n--;) *--b = *s.m_cur++;
+ }
+ }
+ else
+ {
+ s.m_flags |= ExtIStream::Fail;
+ }
+ return s;
+}
+
+} // namespace Blast
+} // namespace Nv