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https://github.com/libretro/scummvm.git
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a0c3754971
Latter defaults to false for now, there are hooks for possible future implementation. svn-id: r42428
108 lines
2.8 KiB
C++
108 lines
2.8 KiB
C++
/* ScummVM - Graphic Adventure Engine
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*
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* ScummVM is the legal property of its developers, whose names
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* are too numerous to list here. Please refer to the COPYRIGHT
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* file distributed with this source distribution.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*
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* $URL$
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* $Id$
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*
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*/
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#ifndef __PS2FILE_IO__
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#define __PS2FILE_IO__
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typedef unsigned long uint64;
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typedef signed long int64;
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#include <stdio.h>
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#include "common/scummsys.h"
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#define CACHE_SIZE (2048 * 32)
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#define MAX_READ_STEP (2048 * 16)
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#define MAX_CACHED_FILES 6
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#define CACHE_READ_THRESHOLD (16 * 2048)
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#define CACHE_FILL_MIN (2048 * 24)
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#define READ_ALIGN 64 // align all reads to the size of an EE cache line
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#define READ_ALIGN_MASK (READ_ALIGN - 1)
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class Ps2File {
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public:
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Ps2File(void);
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virtual ~Ps2File(void);
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virtual bool open(const char *name, int mode);
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virtual uint32 read(void *dest, uint32 len);
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virtual uint32 write(const void *src, uint32 len);
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virtual int32 tell(void);
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virtual int32 size(void);
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virtual int seek(int32 offset, int origin);
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virtual bool eof(void);
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virtual bool getErr(void);
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virtual void setErr(bool);
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private:
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void cacheReadAhead(void);
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void cacheReadSync(void);
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int _fd;
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uint32 _mode;
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uint32 _fileSize;
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uint32 _filePos;
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uint32 _cacheSize;
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uint32 _cachePos;
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uint8 *_cache;
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bool _eof;
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bool _err;
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int _sema;
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uint8 *_cacheBuf;
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bool _cacheOpRunning;
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uint32 _physFilePos;
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uint32 _bytesInCache, _cacheOfs;
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uint32 _readBytesBlock;
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bool _stream;
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};
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FILE *ps2_fopen(const char *fname, const char *mode);
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int ps2_fclose(FILE *stream);
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int ps2_fflush(FILE *stream);
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int ps2_fseek(FILE *stream, long offset, int origin);
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uint32 ps2_ftell(FILE *stream);
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int ps2_feof(FILE *stream);
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size_t ps2_fread(void *buf, size_t r, size_t n, FILE *stream);
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int ps2_fgetc(FILE *stream);
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char *ps2_fgets(char *buf, int n, FILE *stream);
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size_t ps2_fwrite(const void *buf, size_t r, size_t n, FILE *stream);
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int ps2_fputc(int c, FILE *stream);
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int ps2_fputs(const char *s, FILE *stream);
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int ps2_fprintf(FILE *pOut, const char *zFormat, ...);
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int ps2_ferror(FILE *stream);
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void ps2_clearerr(FILE *stream);
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#endif // __PS2FILE_IO__
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