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* aria2 - The high speed download utility
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* Copyright (C) 2010 Tatsuhiro Tsujikawa
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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* In addition, as a special exception, the copyright holders give
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* permission to link the code of portions of this program with the
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* OpenSSL library under certain conditions as described in each
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* individual source file, and distribute linked combinations
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* You must obey the GNU General Public License in all respects
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* for all of the code used other than OpenSSL. If you modify
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* file(s) with this exception, you may extend this exception to your
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* version of the file(s), but you are not obligated to do so. If you
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* do not wish to do so, delete this exception statement from your
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* version. If you delete this exception statement from all source
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* files in the program, then also delete it here.
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#ifndef D_STREAM_FILTER_H
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#define D_STREAM_FILTER_H
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#include "SharedHandle.h"
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// Interface for basic decoding functionality.
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SharedHandle<StreamFilter> delegate_;
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(const SharedHandle<StreamFilter>& delegate = SharedHandle<StreamFilter>());
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virtual ~StreamFilter() {}
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// init() must be called before calling decode().
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virtual void init() = 0;
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virtual ssize_t transform(const SharedHandle<BinaryStream>& out,
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const SharedHandle<Segment>& segment,
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const unsigned char* inbuf, size_t inlen) = 0;
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virtual bool finished() = 0;
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// The call of release() will free allocated resources.
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// After calling release(), the object can be reused by calling init().
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virtual void release() = 0;
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virtual const std::string& getName() const = 0;
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virtual size_t getBytesProcessed() const = 0;
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virtual bool installDelegate(const SharedHandle<StreamFilter>& filter);
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SharedHandle<StreamFilter> getDelegate() const
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#endif // D_STREAM_FILTER_H