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/* ScummVM - Graphic Adventure Engine
*
* ScummVM is the legal property of its developers, whose names
* are too numerous to list here. Please refer to the COPYRIGHT
* file distributed with this source distribution.
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
*/
#ifndef M4_FILEIO_FSTREAM_H
#define M4_FILEIO_FSTREAM_H
#include "common/file.h"
#include "m4/fileio/sys_file.h"
#include "m4/mem/reloc.h"
#include "m4/m4_types.h"
namespace M4 {
class StreamFile {
private:
Common::File _file;
public:
StreamFile(const Common::Path &filename);
~StreamFile() {}
int32 read(Handle bufferHandle, int32 n);
bool seek(uint32 n);
bool seek_ahead(int32 n);
uint32 get_pos();
};
struct strmRequest {
strmRequest *next;
strmRequest *prev;
SysFile *srcFile;
int32 strmSize;
MemHandle strmHandle;
uint8 *strmBuff;
uint8 *endStrmBuff;
uint8 *strmHead;
uint8 *strmTail;
uint8 *strmWrap;
uint8 *strmLastRead;
int32 nextReadSize;
int32 numBlocksToRead;
int32 *blockSizeArray;
bool wrapStream;
};
bool f_stream_Init();
void f_stream_Shutdown();
strmRequest *f_stream_Open(SysFile *srcFile, int32 fileOffset, int32 strmMinBuffSize, int32 strmBuffSize,
int32 numBlocksToRead, int32 *blockSizeArray, int32 initialRead, bool wrapStream);
int32 f_stream_Read(strmRequest *myStream, uint8 **dest, int32 numBytes);
void f_stream_Close(strmRequest *myStream);
void f_stream_Process(int32 numToProcess);
} // namespace M4
#endif
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