71 lines
1.7 KiB
C++
71 lines
1.7 KiB
C++
/******************************************************************************
|
|
|
|
COPYRIGHT(C) JONAS 'SORTIE' TERMANSEN 2011.
|
|
|
|
This file is part of Sortix.
|
|
|
|
Sortix 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.
|
|
|
|
Sortix 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 Sortix. If not, see <http://www.gnu.org/licenses/>.
|
|
|
|
stream.h
|
|
Various device types that provides a sequence of bytes.
|
|
|
|
******************************************************************************/
|
|
|
|
#ifndef SORTIX_STREAM_H
|
|
#define SORTIX_STREAM_H
|
|
|
|
#include "device.h"
|
|
|
|
namespace Sortix
|
|
{
|
|
class DevStream : public Device
|
|
{
|
|
public:
|
|
typedef Device BaseClass;
|
|
|
|
public:
|
|
virtual bool IsType(unsigned type) const { return type == Device::STREAM; }
|
|
|
|
public:
|
|
virtual ssize_t Read(byte* dest, size_t count) = 0;
|
|
virtual ssize_t Write(const byte* src, size_t count) = 0;
|
|
virtual bool IsReadable() = 0;
|
|
virtual bool IsWritable() = 0;
|
|
|
|
};
|
|
|
|
class DevBuffer : public DevStream
|
|
{
|
|
public:
|
|
typedef DevStream BaseClass;
|
|
|
|
public:
|
|
virtual bool IsType(unsigned type) const
|
|
{
|
|
return type == Device::BUFFER || BaseClass::IsType(type);
|
|
}
|
|
|
|
public:
|
|
virtual size_t BlockSize() = 0;
|
|
virtual uintmax_t Size() = 0;
|
|
virtual uintmax_t Position() = 0;
|
|
virtual bool Seek(uintmax_t position) = 0;
|
|
virtual bool Resize(uintmax_t size) = 0;
|
|
|
|
};
|
|
}
|
|
|
|
#endif
|
|
|