diff options
| author | git perforce import user <a@b> | 2016-10-25 12:29:14 -0600 |
|---|---|---|
| committer | Sheikh Dawood Abdul Ajees <Sheikh Dawood Abdul Ajees> | 2016-10-25 18:56:37 -0500 |
| commit | 3dfe2108cfab31ba3ee5527e217d0d8e99a51162 (patch) | |
| tree | fa6485c169e50d7415a651bf838f5bcd0fd3bfbd /PxShared/src/filebuf/include/PsFileBuffer.h | |
| download | physx-3.4-3dfe2108cfab31ba3ee5527e217d0d8e99a51162.tar.xz physx-3.4-3dfe2108cfab31ba3ee5527e217d0d8e99a51162.zip | |
Initial commit:
PhysX 3.4.0 Update @ 21294896
APEX 1.4.0 Update @ 21275617
[CL 21300167]
Diffstat (limited to 'PxShared/src/filebuf/include/PsFileBuffer.h')
| -rw-r--r-- | PxShared/src/filebuf/include/PsFileBuffer.h | 250 |
1 files changed, 250 insertions, 0 deletions
diff --git a/PxShared/src/filebuf/include/PsFileBuffer.h b/PxShared/src/filebuf/include/PsFileBuffer.h new file mode 100644 index 00000000..57c0b692 --- /dev/null +++ b/PxShared/src/filebuf/include/PsFileBuffer.h @@ -0,0 +1,250 @@ +// This code contains NVIDIA Confidential Information and is disclosed to you +// under a form of NVIDIA software license agreement provided separately to you. +// +// Notice +// NVIDIA Corporation and its licensors retain all intellectual property and +// proprietary rights in and to this software and 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. +// +// ALL NVIDIA DESIGN SPECIFICATIONS, CODE ARE PROVIDED "AS IS.". NVIDIA MAKES +// NO WARRANTIES, EXPRESSED, IMPLIED, STATUTORY, OR OTHERWISE WITH RESPECT TO +// THE MATERIALS, AND EXPRESSLY DISCLAIMS ALL IMPLIED WARRANTIES OF NONINFRINGEMENT, +// MERCHANTABILITY, AND FITNESS FOR A PARTICULAR PURPOSE. +// +// Information and code furnished is believed to be accurate and reliable. +// However, NVIDIA Corporation assumes no responsibility for the consequences of use of such +// information or for any infringement of patents or other rights of third parties that may +// result from its use. No license is granted by implication or otherwise under any patent +// or patent rights of NVIDIA Corporation. Details are subject to change without notice. +// This code supersedes and replaces all information previously supplied. +// NVIDIA Corporation products are not authorized for use as critical +// components in life support devices or systems without express written approval of +// NVIDIA Corporation. +// +// Copyright (c) 2008-2016 NVIDIA Corporation. All rights reserved. + +#ifndef PSFILEBUFFER_PSFILEBUFFER_H +#define PSFILEBUFFER_PSFILEBUFFER_H + +#include "filebuf/PxFileBuf.h" + +#include "Ps.h" +#include "PsUserAllocated.h" +#include <stdio.h> + +namespace physx +{ +namespace general_PxIOStream2 +{ + using namespace shdfnd; + +//Use this class if you want to use your own allocator +class PxFileBufferBase : public PxFileBuf +{ +public: + PxFileBufferBase(const char *fileName,OpenMode mode) + { + mOpenMode = mode; + mFph = NULL; + mFileLength = 0; + mSeekRead = 0; + mSeekWrite = 0; + mSeekCurrent = 0; + switch ( mode ) + { + case OPEN_READ_ONLY: + mFph = fopen(fileName,"rb"); + break; + case OPEN_WRITE_ONLY: + mFph = fopen(fileName,"wb"); + break; + case OPEN_READ_WRITE_NEW: + mFph = fopen(fileName,"wb+"); + break; + case OPEN_READ_WRITE_EXISTING: + mFph = fopen(fileName,"rb+"); + break; + case OPEN_FILE_NOT_FOUND: + break; + } + if ( mFph ) + { + fseek(mFph,0L,SEEK_END); + mFileLength = static_cast<uint32_t>(ftell(mFph)); + fseek(mFph,0L,SEEK_SET); + } + else + { + mOpenMode = OPEN_FILE_NOT_FOUND; + } + } + + virtual ~PxFileBufferBase() + { + close(); + } + + virtual void close() + { + if( mFph ) + { + fclose(mFph); + mFph = 0; + } + } + + virtual SeekType isSeekable(void) const + { + return mSeekType; + } + + virtual uint32_t read(void* buffer, uint32_t size) + { + uint32_t ret = 0; + if ( mFph ) + { + setSeekRead(); + ret = static_cast<uint32_t>(::fread(buffer,1,size,mFph)); + mSeekRead+=ret; + mSeekCurrent+=ret; + } + return ret; + } + + virtual uint32_t peek(void* buffer, uint32_t size) + { + uint32_t ret = 0; + if ( mFph ) + { + uint32_t loc = tellRead(); + setSeekRead(); + ret = static_cast<uint32_t>(::fread(buffer,1,size,mFph)); + mSeekCurrent+=ret; + seekRead(loc); + } + return ret; + } + + virtual uint32_t write(const void* buffer, uint32_t size) + { + uint32_t ret = 0; + if ( mFph ) + { + setSeekWrite(); + ret = static_cast<uint32_t>(::fwrite(buffer,1,size,mFph)); + mSeekWrite+=ret; + mSeekCurrent+=ret; + if ( mSeekWrite > mFileLength ) + { + mFileLength = mSeekWrite; + } + } + return ret; + } + + virtual uint32_t tellRead(void) const + { + return mSeekRead; + } + + virtual uint32_t tellWrite(void) const + { + return mSeekWrite; + } + + virtual uint32_t seekRead(uint32_t loc) + { + mSeekRead = loc; + if ( mSeekRead > mFileLength ) + { + mSeekRead = mFileLength; + } + return mSeekRead; + } + + virtual uint32_t seekWrite(uint32_t loc) + { + mSeekWrite = loc; + if ( mSeekWrite > mFileLength ) + { + mSeekWrite = mFileLength; + } + return mSeekWrite; + } + + virtual void flush(void) + { + if ( mFph ) + { + ::fflush(mFph); + } + } + + virtual OpenMode getOpenMode(void) const + { + return mOpenMode; + } + + virtual uint32_t getFileLength(void) const + { + return mFileLength; + } + +private: + // Moves the actual file pointer to the current read location + void setSeekRead(void) + { + if ( mSeekRead != mSeekCurrent && mFph ) + { + if ( mSeekRead >= mFileLength ) + { + fseek(mFph,0L,SEEK_END); + } + else + { + fseek(mFph,static_cast<long>(mSeekRead),SEEK_SET); + } + mSeekCurrent = mSeekRead = static_cast<uint32_t>(ftell(mFph)); + } + } + // Moves the actual file pointer to the current write location + void setSeekWrite(void) + { + if ( mSeekWrite != mSeekCurrent && mFph ) + { + if ( mSeekWrite >= mFileLength ) + { + fseek(mFph,0L,SEEK_END); + } + else + { + fseek(mFph,static_cast<long>(mSeekWrite),SEEK_SET); + } + mSeekCurrent = mSeekWrite = static_cast<uint32_t>(ftell(mFph)); + } + } + + + FILE *mFph; + uint32_t mSeekRead; + uint32_t mSeekWrite; + uint32_t mSeekCurrent; + uint32_t mFileLength; + SeekType mSeekType; + OpenMode mOpenMode; +}; + +//Use this class if you want to use PhysX memory allocator +class PsFileBuffer: public PxFileBufferBase, public UserAllocated +{ +public: + PsFileBuffer(const char *fileName,OpenMode mode): PxFileBufferBase(fileName, mode) {} +}; + +} +using namespace general_PxIOStream2; +} + +#endif // PSFILEBUFFER_PSFILEBUFFER_H |