400 lines
14 KiB
C
400 lines
14 KiB
C
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//
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// Redistribution and use in source and binary forms, with or without
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// modification, are permitted provided that the following conditions
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// are met:
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// * Redistributions of source code must retain the above copyright
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// notice, this list of conditions and the following disclaimer.
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// * Redistributions in binary form must reproduce the above copyright
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// notice, this list of conditions and the following disclaimer in the
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// documentation and/or other materials provided with the distribution.
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// * Neither the name of NVIDIA CORPORATION nor the names of its
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// contributors may be used to endorse or promote products derived
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// from this software without specific prior written permission.
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//
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// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS ``AS IS'' AND ANY
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// EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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// IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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// PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
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// CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
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// EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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// PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
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// PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
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// OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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//
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// Copyright (c) 2008-2019 NVIDIA Corporation. All rights reserved.
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// Copyright (c) 2004-2008 AGEIA Technologies, Inc. All rights reserved.
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// Copyright (c) 2001-2004 NovodeX AG. All rights reserved.
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#ifndef PX_PHYSICS_COMMON_NX_SERIAL_FRAMEWORK
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#define PX_PHYSICS_COMMON_NX_SERIAL_FRAMEWORK
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/** \addtogroup common
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@{
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*/
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#include "common/PxPhysXCommonConfig.h"
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#if !PX_DOXYGEN
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namespace physx
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{
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#endif
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typedef PxU16 PxType;
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class PxBase;
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class PxSerializationContext;
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class PxRepXSerializer;
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class PxSerializer;
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class PxPhysics;
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//! Default serialization alignment
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#define PX_SERIAL_ALIGN 16
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//! Serialized input data must be aligned to this value
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#define PX_SERIAL_FILE_ALIGN 128
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//! PxSerialObjectId value for objects that do not have an ID
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#define PX_SERIAL_OBJECT_ID_INVALID 0
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//! ID type for PxBase objects in a PxCollection
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typedef PxU64 PxSerialObjectId;
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//! Bit to mark pointer type references, @see PxDeserializationContext
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#define PX_SERIAL_REF_KIND_PTR_TYPE_BIT (1u<<31)
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//! Reference kind value for PxBase objects
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#define PX_SERIAL_REF_KIND_PXBASE (0 | PX_SERIAL_REF_KIND_PTR_TYPE_BIT)
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//! Reference kind value for material indices
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#define PX_SERIAL_REF_KIND_MATERIAL_IDX (1)
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//! Used to fix multi-byte characters warning from gcc for situations like: PxU32 foo = 'CCTS';
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#define PX_MAKE_FOURCC(a, b, c, d) ( (a) | ((b)<<8) | ((c)<<16) | ((d)<<24) )
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/**
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\brief Callback class used to process PxBase objects.
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@see PxSerializer::requires
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*/
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class PxProcessPxBaseCallback
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{
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public:
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virtual ~PxProcessPxBaseCallback() {}
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virtual void process(PxBase&) = 0;
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};
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/**
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\brief Binary serialization context class.
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This class is used to register reference values and write object
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and object extra data during serialization.
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It is mainly used by the serialization framework. Except for custom
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serializable types, users should not have to worry about it.
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@see PxDeserializationContext
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*/
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class PxSerializationContext
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{
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public:
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/**
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\brief Registers a reference value corresponding to a PxBase object.
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This method is assumed to be called in the implementation of PxSerializer::registerReferences for serialized
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references that need to be resolved on deserialization.
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A reference needs to be associated with exactly one PxBase object in either the collection or the
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external references collection.
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Different kinds of references are supported and need to be specified. In the most common case
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(PX_SERIAL_REF_KIND_PXBASE) the PxBase object matches the reference value (which is the pointer
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to the PxBase object). Integer references maybe registered as well (used for internal material
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indices with PX_SERIAL_REF_KIND_MATERIAL_IDX). Other kinds could be added with the restriction that
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for pointer types the kind value needs to be marked with the PX_SERIAL_REF_KIND_PTR_TYPE_BIT.
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\param[in] base PxBase object associated with the reference
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\param[in] kind What kind of reference this is (PX_SERIAL_REF_KIND_PXBASE, PX_SERIAL_REF_KIND_MATERIAL_IDX or custom kind)
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\param[in] reference Value of reference
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@see PxDeserializationContext::resolveReference, PX_SERIAL_REF_KIND_PXBASE, PX_SERIAL_REF_KIND_MATERIAL_IDX, PxSerializer::registerReferences
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*/
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virtual void registerReference(PxBase& base, PxU32 kind, size_t reference) = 0;
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/**
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\brief Returns the collection that is being serialized.
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*/
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virtual const PxCollection& getCollection() const = 0;
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/**
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\brief Serializes object data and object extra data.
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This function is assumed to be called within the implementation of PxSerializer::exportData and PxSerializer::exportExtraData.
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@see PxSerializer::exportData, PxSerializer::exportExtraData, PxSerializer::createObject, PxDeserializationContext::readExtraData
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*/
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virtual void writeData(const void* data, PxU32 size) = 0;
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/**
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\brief Aligns the serialized data.
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This function is assumed to be called within the implementation of PxSerializer::exportData and PxSerializer::exportExtraData.
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@see PxSerializer::exportData, PxSerializer::exportExtraData, PxDeserializationContext::alignExtraData
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*/
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virtual void alignData(PxU32 alignment = PX_SERIAL_ALIGN) = 0;
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/**
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\brief Helper function to write a name to the extraData if serialization is configured to save names.
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This function is assumed to be called within the implementation of PxSerializer::exportExtraData.
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@see PxSerialization::serializeCollectionToBinary, PxDeserializationContext::readName
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*/
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virtual void writeName(const char* name) = 0;
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protected:
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PxSerializationContext() {}
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virtual ~PxSerializationContext() {}
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};
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/**
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\brief Binary deserialization context class.
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This class is used to resolve references and access extra data during deserialization.
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It is mainly used by the serialization framework. Except for custom
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serializable types, users should not have to worry about it.
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@see PxSerializationContext
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*/
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class PxDeserializationContext
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{
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public:
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/**
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\brief Retrieves a pointer to a deserialized PxBase object given a corresponding deserialized reference value
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This method is assumed to be called in the implementation of PxSerializer::createObject in order
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to update reference values on deserialization.
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To update a PxBase reference the corresponding deserialized pointer value needs to be provided in order to retrieve
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the location of the corresponding deserialized PxBase object. (PxDeserializationContext::translatePxBase simplifies
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this common case).
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For other kinds of references the reverence values need to be updated by deduction given the corresponding PxBase instance.
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\param[in] kind What kind of reference this is (PX_SERIAL_REF_KIND_PXBASE, PX_SERIAL_REF_KIND_MATERIAL_IDX or custom kind)
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\param[in] reference Deserialized reference value
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\return PxBase object associated with the reference value
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@see PxSerializationContext::registerReference, PX_SERIAL_REF_KIND_PXBASE, PX_SERIAL_REF_KIND_MATERIAL_IDX, translatePxBase
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*/
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virtual PxBase* resolveReference(PxU32 kind, size_t reference) const = 0;
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/**
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\brief Helper function to update PxBase pointer on deserialization
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@see resolveReference, PX_SERIAL_REF_KIND_PXBASE
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*/
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template<typename T>
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void translatePxBase(T*& base) { if (base) { base = static_cast<T*>(resolveReference(PX_SERIAL_REF_KIND_PXBASE, size_t(base))); } }
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/**
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\brief Helper function to read a name from the extra data during deserialization.
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This function is assumed to be called within the implementation of PxSerializer::createObject.
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@see PxSerializationContext::writeName
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*/
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PX_INLINE void readName(const char*& name)
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{
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PxU32 len = *reinterpret_cast<PxU32*>(mExtraDataAddress);
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mExtraDataAddress += sizeof(len);
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name = len ? reinterpret_cast<const char*>(mExtraDataAddress) : NULL;
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mExtraDataAddress += len;
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}
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/**
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\brief Function to read extra data during deserialization.
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This function is assumed to be called within the implementation of PxSerializer::createObject.
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@see PxSerializationContext::writeData, PxSerializer::createObject
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*/
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template<typename T>
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PX_INLINE T* readExtraData(PxU32 count=1)
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{
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T* data = reinterpret_cast<T*>(mExtraDataAddress);
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mExtraDataAddress += sizeof(T)*count;
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return data;
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}
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/**
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\brief Function to read extra data during deserialization optionally aligning the extra data stream before reading.
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This function is assumed to be called within the implementation of PxSerializer::createObject.
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@see PxSerializationContext::writeData, PxDeserializationContext::alignExtraData, PxSerializer::createObject
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*/
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template<typename T, PxU32 alignment>
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PX_INLINE T* readExtraData(PxU32 count=1)
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{
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alignExtraData(alignment);
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return readExtraData<T>(count);
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}
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/**
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\brief Function to align the extra data stream to a power of 2 alignment
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This function is assumed to be called within the implementation of PxSerializer::createObject.
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@see PxSerializationContext::alignData, PxSerializer::createObject
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*/
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PX_INLINE void alignExtraData(PxU32 alignment = PX_SERIAL_ALIGN)
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{
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size_t addr = reinterpret_cast<size_t>(mExtraDataAddress);
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addr = (addr+alignment-1)&~size_t(alignment-1);
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mExtraDataAddress = reinterpret_cast<PxU8*>(addr);
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}
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protected:
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PxDeserializationContext() {}
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virtual ~PxDeserializationContext() {}
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PxU8* mExtraDataAddress;
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};
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/**
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\brief Callback type for exporting binary meta data for a serializable type.
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@see PxSerializationRegistry::registerBinaryMetaDataCallback
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\param stream Stream to store binary meta data.
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*/
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typedef void (*PxBinaryMetaDataCallback)(PxOutputStream& stream);
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/**
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\brief Class serving as a registry for XML (RepX) and binary serializable types.
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In order to serialize and deserialize objects the application needs
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to maintain an instance of this class. It can be created with
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PxSerialization::createSerializationRegistry() and released with
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PxSerializationRegistry::release().
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@see PxSerialization::createSerializationRegistry
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*/
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class PxSerializationRegistry
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{
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public:
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/************************************************************************************************/
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/** @name Binary Serialization Functionality
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*/
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//@{
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/**
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\brief Register a serializer for a concrete type
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\param type PxConcreteType corresponding to the serializer
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\param serializer The PxSerializer to be registered
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@see PxConcreteType, PxSerializer, PxSerializationRegistry::unregisterSerializer
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*/
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virtual void registerSerializer(PxType type, PxSerializer& serializer) = 0;
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/**
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\brief Unregister a serializer for a concrete type, and retrieves the corresponding serializer object.
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\param type PxConcreteType for which the serializer should be unregistered
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\return Unregistered serializer corresponding to type, NULL for types for which no serializer has been registered.
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@see PxConcreteType, PxSerializationRegistry::registerSerializer, PxSerializationRegistry::release
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*/
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virtual PxSerializer* unregisterSerializer(PxType type) = 0;
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/**
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\brief Register binary meta data callback
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The callback is executed when calling PxSerialization::dumpBinaryMetaData.
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\param callback PxBinaryMetaDataCallback to be registered.
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@see PxBinaryMetaDataCallback, PxSerialization::dumpBinaryMetaData
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*/
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virtual void registerBinaryMetaDataCallback(PxBinaryMetaDataCallback callback) = 0;
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/**
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\brief Returns PxSerializer corresponding to type
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\param type PxConcreteType of the serializer requested.
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\return Registered PxSerializer object corresponding to type
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@see PxConcreteType
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*/
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virtual const PxSerializer* getSerializer(PxType type) const = 0;
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//@}
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/************************************************************************************************/
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/** @name RepX (XML) Serialization Functionality
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*/
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//@{
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/**
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\brief Register a RepX serializer for a concrete type
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\param type PxConcreteType corresponding to the RepX serializer
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\param serializer The PxRepXSerializer to be registered
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@see PxConcreteType, PxRepXSerializer
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*/
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virtual void registerRepXSerializer(PxType type, PxRepXSerializer& serializer) = 0;
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/**
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\brief Unregister a RepX serializer for a concrete type, and retrieves the corresponding serializer object.
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\param type PxConcreteType for which the RepX serializer should be unregistered
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\return Unregistered PxRepxSerializer corresponding to type, NULL for types for which no RepX serializer has been registered.
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@see PxConcreteType, PxSerializationRegistry::registerRepXSerializer, PxSerializationRegistry::release
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*/
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virtual PxRepXSerializer* unregisterRepXSerializer(PxType type) = 0;
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/**
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\brief Returns RepX serializer given the corresponding type name
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\param typeName Name of the type
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\return Registered PxRepXSerializer object corresponding to type name
|
||
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|
||
|
|
@see PxRepXSerializer, PxTypeInfo, PX_DEFINE_TYPEINFO
|
||
|
|
*/
|
||
|
|
virtual PxRepXSerializer* getRepXSerializer(const char* typeName) const = 0;
|
||
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|
|
||
|
|
//@}
|
||
|
|
/************************************************************************************************/
|
||
|
|
|
||
|
|
/**
|
||
|
|
\brief Releases PxSerializationRegistry instance.
|
||
|
|
|
||
|
|
This unregisters all PhysX and PhysXExtension serializers. Make sure to unregister all custom type
|
||
|
|
serializers before releasing the PxSerializationRegistry.
|
||
|
|
|
||
|
|
@see PxSerializationRegistry::unregisterSerializer, PxSerializationRegistry::unregisterRepXSerializer
|
||
|
|
*/
|
||
|
|
virtual void release() = 0;
|
||
|
|
|
||
|
|
protected:
|
||
|
|
virtual ~PxSerializationRegistry(){}
|
||
|
|
};
|
||
|
|
|
||
|
|
#if !PX_DOXYGEN
|
||
|
|
} // namespace physx
|
||
|
|
#endif
|
||
|
|
|
||
|
|
/** @} */
|
||
|
|
#endif
|