forked from mia/Aegisub
82 lines
2.6 KiB
C
82 lines
2.6 KiB
C
// Copyright (c) 2007-2008 Fredrik Mellbin
|
|
//
|
|
// Permission is hereby granted, free of charge, to any person obtaining a copy
|
|
// of this software and associated documentation files (the "Software"), to deal
|
|
// in the Software without restriction, including without limitation the rights
|
|
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
|
|
// copies of the Software, and to permit persons to whom the Software is
|
|
// furnished to do so, subject to the following conditions:
|
|
//
|
|
// The above copyright notice and this permission notice shall be included in
|
|
// all copies or substantial portions of the Software.
|
|
//
|
|
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
|
|
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
|
|
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
|
|
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
|
|
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
|
|
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
|
|
// THE SOFTWARE.
|
|
|
|
#ifndef STDIOSTREAM_H
|
|
#define STDIOSTREAM_H
|
|
|
|
#include <stdlib.h>
|
|
#include <stdio.h>
|
|
#include <errno.h>
|
|
#include <string.h>
|
|
#include <fcntl.h>
|
|
#include <io.h>
|
|
#include "MatroskaParser.h"
|
|
|
|
#define CACHESIZE 65536
|
|
|
|
/************\
|
|
* Structures *
|
|
\************/
|
|
|
|
/* first we need to create an I/O object that the parser will use to read the
|
|
* source file
|
|
*/
|
|
struct StdIoStream {
|
|
struct InputStream base;
|
|
FILE *fp;
|
|
int error;
|
|
};
|
|
|
|
typedef struct StdIoStream StdIoStream;
|
|
|
|
/***********\
|
|
* Functions *
|
|
\***********/
|
|
|
|
/* read count bytes into buffer starting at file position pos
|
|
* return the number of bytes read, -1 on error or 0 on EOF
|
|
*/
|
|
int StdIoRead(StdIoStream *st, ulonglong pos, void *buffer, int count);
|
|
|
|
/* scan for a signature sig(big-endian) starting at file position pos
|
|
* return position of the first byte of signature or -1 if error/not found
|
|
*/
|
|
longlong StdIoScan(StdIoStream *st, ulonglong start, unsigned signature);
|
|
|
|
/* return cache size, this is used to limit readahead */
|
|
unsigned StdIoGetCacheSize(StdIoStream *st);
|
|
|
|
/* return last error message */
|
|
const char *StdIoGetLastError(StdIoStream *st);
|
|
|
|
/* memory allocation, this is done via stdlib */
|
|
void *StdIoMalloc(StdIoStream *st, size_t size);
|
|
|
|
void *StdIoRealloc(StdIoStream *st, void *mem, size_t size);
|
|
|
|
void StdIoFree(StdIoStream *st, void *mem);
|
|
|
|
/* progress report handler for lengthy operations
|
|
* returns 0 to abort operation, nonzero to continue
|
|
*/
|
|
int StdIoProgress(StdIoStream *st, ulonglong cur, ulonglong max);
|
|
|
|
|
|
#endif /* #ifndef STDIOSTREAM_H */
|