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//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions
// are met:
// * Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
// * Redistributions in binary form must reproduce the above copyright
// notice, this list of conditions and the following disclaimer in the
// documentation and/or other materials provided with the distribution.
// * Neither the name of NVIDIA CORPORATION nor the names of its
// contributors may be used to endorse or promote products derived
// from this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS ``AS IS'' AND ANY
// EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
// IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
// PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
// CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
// EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
// PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
// PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
// OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
//
// Copyright (c) 2008-2018 NVIDIA Corporation. All rights reserved.
#ifndef PXPVDSDK_PXPVDBYTESTREAMS_H
#define PXPVDSDK_PXPVDBYTESTREAMS_H
#include "PxPvdObjectModelBaseTypes.h"
namespace physx
{
namespace pvdsdk
{
static inline uint32_t strLen(const char* inStr)
{
uint32_t len = 0;
if(inStr)
{
while(*inStr)
{
++len;
++inStr;
}
}
return len;
}
class PvdInputStream
{
protected:
virtual ~PvdInputStream()
{
}
public:
// Return false if you can't write the number of bytes requested
// But make an absolute best effort to read the data...
virtual bool read(uint8_t* buffer, uint32_t& len) = 0;
template <typename TDataType>
bool read(TDataType* buffer, uint32_t numItems)
{
uint32_t expected = numItems;
uint32_t amountToRead = numItems * sizeof(TDataType);
read(reinterpret_cast<uint8_t*>(buffer), amountToRead);
numItems = amountToRead / sizeof(TDataType);
PX_ASSERT(numItems == expected);
return expected == numItems;
}
template <typename TDataType>
PvdInputStream& operator>>(TDataType& data)
{
uint32_t dataSize = static_cast<uint32_t>(sizeof(TDataType));
bool success = read(reinterpret_cast<uint8_t*>(&data), dataSize);
// PX_ASSERT( success );
// PX_ASSERT( dataSize == sizeof( data ) );
(void)success;
return *this;
}
};
struct ByteSwappingPvdInputStream
{
protected:
ByteSwappingPvdInputStream& operator=(ByteSwappingPvdInputStream& other);
public:
PvdInputStream& mStream;
ByteSwappingPvdInputStream(PvdInputStream& stream) : mStream(stream)
{
}
template <typename TDataType>
bool read(TDataType* buffer, uint32_t& numItems)
{
bool retval = mStream.read(buffer, numItems);
for(uint32_t idx = 0; idx < numItems; ++idx)
swapBytes(buffer[idx]);
return retval;
}
template <typename TDataType>
ByteSwappingPvdInputStream& operator>>(TDataType& data)
{
mStream >> data;
swapBytes(data);
return *this;
}
};
class PvdOutputStream
{
protected:
virtual ~PvdOutputStream()
{
}
public:
// Return false if you can't write the number of bytes requested
// But make an absolute best effort to write the data...
virtual bool write(const uint8_t* buffer, uint32_t len) = 0;
virtual bool directCopy(PvdInputStream& inStream, uint32_t len) = 0;
template <typename TDataType>
bool write(const TDataType* buffer, uint32_t numItems)
{
return write(reinterpret_cast<const uint8_t*>(buffer), numItems * sizeof(TDataType));
}
template <typename TDataType>
PvdOutputStream& operator<<(const TDataType& data)
{
bool success = write(reinterpret_cast<const uint8_t*>(&data), sizeof(data));
PX_ASSERT(success);
(void)success;
return *this;
}
PvdOutputStream& operator<<(const char* inString)
{
if(inString && *inString)
{
uint32_t len(strLen(inString));
write(inString, len);
}
return *this;
}
};
}
}
#endif // PXPVDSDK_PXPVDBYTESTREAMS_H
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