scummvm/common/bufferedstream.h
2021-12-26 18:48:43 +01:00

90 lines
3.2 KiB
C++

/* 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 COMMON_BUFFEREDSTREAM_H
#define COMMON_BUFFEREDSTREAM_H
#include "common/stream.h"
#include "common/types.h"
namespace Common {
/**
* @defgroup common_buffstream Buffered stream
* @ingroup common
*
* @brief API for implementing a buffered stream.
*
* @{
*/
/**
* Take an arbitrary ReadStream and wrap it in a custom stream that
* transparently provides buffering.
* You can specify how big the buffer should be, and whether the wrapped
* stream should be disposed when the wrapper is disposed.
*
* It is safe to call this with a NULL parameter (in this case, NULL is
* returned).
*
* @param parentStream The ReadStream to wrap in a custom stream.
* @param bufSize Size of the buffer.
* @param disposeParentStream Flag indicating whether to dispose of the wrapped stream.
*/
ReadStream *wrapBufferedReadStream(ReadStream *parentStream, uint32 bufSize, DisposeAfterUse::Flag disposeParentStream);
/**
* Take an arbitrary SeekableReadStream and wrap it in a custom stream that
* transparently provides buffering.
* You can specify how big the buffer should be, and whether the wrapped
* stream should be disposed when the wrapper is disposed.
*
* It is safe to call this with a NULL parameter (in this case, NULL is
* returned).
*
* @param parentStream The SeekableReadStream to wrap in a custom stream.
* @param bufSize Size of the buffer.
* @param disposeParentStream Flag indicating whether to dispose of the wrapped stream.
*/
SeekableReadStream *wrapBufferedSeekableReadStream(SeekableReadStream *parentStream, uint32 bufSize, DisposeAfterUse::Flag disposeParentStream);
/**
* Take an arbitrary WriteStream and wrap it in a custom stream that
* transparently provides buffering.
* You can specify how big the buffer should be. Currently, the
* parent stream is \em always disposed when the wrapper is disposed.
*
* It is safe to call this with a NULL parameter (in this case, NULL is
* returned).
*
* @param parentStream The WriteStream to wrap in a custom stream.
* @param bufSize Size of the buffer.
*/
SeekableWriteStream *wrapBufferedWriteStream(SeekableWriteStream *parentStream, uint32 bufSize);
WriteStream *wrapBufferedWriteStream(WriteStream *parentStream, uint32 bufSize);
/** @} */
} // End of namespace Common
#endif