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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.
// Copyright (c) 2004-2008 AGEIA Technologies, Inc. All rights reserved.
// Copyright (c) 2001-2004 NovodeX AG. All rights reserved.
#ifndef PXFOUNDATION_PXIO_H
#define PXFOUNDATION_PXIO_H
/** \addtogroup common
@{
*/
#include "foundation/PxSimpleTypes.h"
#if !PX_DOXYGEN
namespace physx
{
#endif
/**
\brief Input stream class for I/O.
The user needs to supply a PxInputStream implementation to a number of methods to allow the SDK to read data.
*/
class PxInputStream
{
public:
/**
\brief read from the stream. The number of bytes read may be less than the number requested.
\param[in] dest the destination address to which the data will be read
\param[in] count the number of bytes requested
\return the number of bytes read from the stream.
*/
virtual uint32_t read(void* dest, uint32_t count) = 0;
virtual ~PxInputStream()
{
}
};
/**
\brief Input data class for I/O which provides random read access.
The user needs to supply a PxInputData implementation to a number of methods to allow the SDK to read data.
*/
class PxInputData : public PxInputStream
{
public:
/**
\brief return the length of the input data
\return size in bytes of the input data
*/
virtual uint32_t getLength() const = 0;
/**
\brief seek to the given offset from the start of the data.
\param[in] offset the offset to seek to. If greater than the length of the data, this call is equivalent to
seek(length);
*/
virtual void seek(uint32_t offset) = 0;
/**
\brief return the current offset from the start of the data
\return the offset to seek to.
*/
virtual uint32_t tell() const = 0;
virtual ~PxInputData()
{
}
};
/**
\brief Output stream class for I/O.
The user needs to supply a PxOutputStream implementation to a number of methods to allow the SDK to write data.
*/
class PxOutputStream
{
public:
/**
\brief write to the stream. The number of bytes written may be less than the number sent.
\param[in] src the destination address from which the data will be written
\param[in] count the number of bytes to be written
\return the number of bytes written to the stream by this call.
*/
virtual uint32_t write(const void* src, uint32_t count) = 0;
virtual ~PxOutputStream()
{
}
};
#if !PX_DOXYGEN
} // namespace physx
#endif
/** @} */
#endif // #ifndef PXFOUNDATION_PXIO_H
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