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/*
* Copyright (c) 2017, NVIDIA CORPORATION. All rights reserved.
*
* NVIDIA CORPORATION and its licensors retain all intellectual property
* and proprietary rights in and to this software, 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.
*/
#pragma once
#include "kj/io.h"
#include "capnp/serialize.h"
#include "generated/NvBlastExtSerializationLL.capn.h"
#include <vector>
#include "NvBlastExtInputStream.h"
#include "NvBlastExtOutputStream.h"
#if !defined(BLAST_LL_ALLOC)
#include "NvBlastExtAllocator.h"
#endif
#include "NvBlastExtGlobals.h"
namespace Nv
{
namespace Blast
{
template<typename TAsset, typename TSerializationReader, typename TSerializationBuilder>
class ExtSerialization
{
public:
static TAsset* deserialize(const unsigned char* input, uint32_t size);
static TAsset* deserializeFromStream(std::istream &inputStream);
static bool serializeIntoExistingBuffer(const TAsset *asset, unsigned char *buffer, uint32_t maxSize, uint32_t &usedSize);
static bool serializeIntoNewBuffer(const TAsset *asset, unsigned char **outBuffer, uint32_t &outSize);
static bool serializeIntoStream(const TAsset *asset, std::ostream &outputStream);
private:
static void serializeMessageIntoNewBuffer(capnp::MallocMessageBuilder& message, unsigned char ** outBuffer, uint32_t &outSize);
// Specialized
static bool serializeIntoBuilder(TSerializationBuilder& assetBuilder, const TAsset* asset);
static bool serializeIntoMessage(capnp::MallocMessageBuilder& message, const TAsset* asset);
static TAsset* deserializeFromStreamReader(capnp::InputStreamMessageReader &message);
};
template<typename TAsset, typename TSerializationReader, typename TSerializationBuilder>
TAsset* ExtSerialization<TAsset, TSerializationReader, TSerializationBuilder>::deserialize(const unsigned char* input, uint32_t size)
{
kj::ArrayPtr<const unsigned char> source(input, size);
kj::ArrayInputStream inputStream(source);
std::vector<uint64_t> scratch;
scratch.resize(size);
kj::ArrayPtr<capnp::word> scratchArray((capnp::word*) scratch.data(), size);
capnp::InputStreamMessageReader message(inputStream, capnp::ReaderOptions(), scratchArray);
return deserializeFromStreamReader(message);
}
template<typename TAsset, typename TSerializationReader, typename TSerializationBuilder>
TAsset* ExtSerialization<TAsset, TSerializationReader, TSerializationBuilder>::deserializeFromStream(std::istream &inputStream)
{
Nv::Blast::ExtInputStream readStream(inputStream);
capnp::InputStreamMessageReader message(readStream);
return deserializeFromStreamReader(message);
}
template<typename TAsset, typename TSerializationReader, typename TSerializationBuilder>
bool ExtSerialization<TAsset, TSerializationReader, TSerializationBuilder>::serializeIntoExistingBuffer(const TAsset *asset, unsigned char *buffer, uint32_t maxSize, uint32_t &usedSize)
{
capnp::MallocMessageBuilder message;
bool result = serializeIntoMessage(message, asset);
if (result == false)
{
usedSize = 0;
return false;
}
uint32_t messageSize = computeSerializedSizeInWords(message) * sizeof(uint64_t);
if (maxSize < messageSize)
{
NvBlastLog logFn = gLog;
#if !defined(BLAST_LL_ALLOC)
logFn = NvBlastTkFrameworkGet()->getLogFn();
#endif
NVBLAST_LOG_ERROR(logFn, "When attempting to serialize into an existing buffer, the provided buffer was too small.");
usedSize = 0;
return false;
}
kj::ArrayPtr<unsigned char> outputBuffer(buffer, maxSize);
kj::ArrayOutputStream outputStream(outputBuffer);
capnp::writeMessage(outputStream, message);
usedSize = messageSize;;
return true;
}
template<typename TAsset, typename TSerializationReader, typename TSerializationBuilder>
bool ExtSerialization<TAsset, TSerializationReader, TSerializationBuilder>::serializeIntoNewBuffer(const TAsset *asset, unsigned char **outBuffer, uint32_t &outSize)
{
capnp::MallocMessageBuilder message;
bool result = serializeIntoMessage(message, asset);
if (result == false)
{
*outBuffer = nullptr;
outSize = 0;
return false;
}
serializeMessageIntoNewBuffer(message, outBuffer, outSize);
return true;
}
template<typename TAsset, typename TSerializationReader, typename TSerializationBuilder>
bool ExtSerialization<TAsset, TSerializationReader, TSerializationBuilder>::serializeIntoStream(const TAsset *asset, std::ostream &outputStream)
{
capnp::MallocMessageBuilder message;
bool result = serializeIntoMessage(message, asset);
if (result == false)
{
return false;
}
Nv::Blast::ExtOutputStream blastOutputStream(outputStream);
writeMessage(blastOutputStream, message);
return true;
}
template<typename TAsset, typename TSerializationReader, typename TSerializationBuilder>
void ExtSerialization<TAsset, TSerializationReader, TSerializationBuilder>::serializeMessageIntoNewBuffer(capnp::MallocMessageBuilder& message, unsigned char ** outBuffer, uint32_t &outSize)
{
uint32_t messageSize = computeSerializedSizeInWords(message) * sizeof(uint64_t);
NvBlastExtAlloc allocFn = gAlloc;
#if !defined(BLAST_LL_ALLOC)
allocFn = ExtAllocator::alignedAlloc16;
#endif
unsigned char* buffer = static_cast<unsigned char *>(allocFn(messageSize));
kj::ArrayPtr<unsigned char> outputBuffer(buffer, messageSize);
kj::ArrayOutputStream outputStream(outputBuffer);
capnp::writeMessage(outputStream, message);
*outBuffer = buffer;
outSize = messageSize;
}
}
}
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