Revision control
++ // Copyright (c) 2001-2004 NovodeX AG. All rights reserved.
++ // Copyright (c) 2004-2008 AGEIA Technologies, Inc. All rights reserved.
++ // SPDX-FileCopyrightText: Copyright (c) 2008-2026 NVIDIA CORPORATION & AFFILIATES. All rights reserved.
++ // SPDX-License-Identifier: Apache-2.0
++
++ #ifndef PX_IO_H
++ #define PX_IO_H
++
++
++ #include "foundation/PxSimpleTypes.h"
++
++ #if !PX_DOXYGEN
++ namespace physx
++ {
++ #endif
++
++ /** enum for empty constructor tag*/
++ enum PxEMPTY
++ {
++ PxEmpty
++ };
++
++ /**
++ \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 uint64_t read(void* dest, uint64_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 uint64_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(uint64_t offset) = 0;
++
++ /**
++ \brief return the current offset from the start of the data
++
++ \return the offset to seek to.
++ */
++
++ virtual uint64_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 uint64_t write(const void* src, uint64_t count) = 0;
++
++ virtual ~PxOutputStream()
++ {
++ }
++ };
++
++ #if !PX_DOXYGEN
++ } // namespace physx
++ #endif
++
++ #endif
++