raze-gles/source/libsmackerdec/include/FileStream.h

63 lines
1.9 KiB
C++

/*
* libsmackerdec - Smacker video decoder
* Copyright (C) 2011 Barry Duncan
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#ifndef _SmackerFileStream_h_
#define _SmackerFileStream_h_
#include <stdint.h>
#include "files.h"
namespace SmackerCommon {
class FileStream
{
public:
bool Open(const char *fileName);
bool Is_Open() { return file.isOpen(); }
void Close() { file.Close(); }
int32_t ReadBytes(uint8_t *data, uint32_t nBytes)
{
return (uint32_t)file.Read(data, static_cast<int32_t>(nBytes));
}
uint64_t ReadUint64LE() { return file.ReadUInt64(); }
uint32_t ReadUint32LE() { return file.ReadUInt32(); }
uint16_t ReadUint16LE() { return file.ReadUInt16(); }
uint8_t ReadByte() { return file.ReadInt8(); }
enum SeekDirection{
kSeekCurrent = SEEK_CUR,
kSeekStart = SEEK_SET,
kSeekEnd = SEEK_END
};
int32_t Seek(int32_t offset, SeekDirection dir = kSeekStart) { return (int)file.Seek(offset, (FileReader::ESeek) dir); }
int32_t Skip(int32_t offset) { return (int)Seek(offset, kSeekCurrent); }
int32_t GetPosition() { return (int)file.Tell(); }
private:
FileReader file;
};
} // close namespace SmackerCommon
#endif