9ca64d5fb3
The ChainFilter class is extremely complicated code, and will grow to be even more complicated when the Filter interface gets extended. Let's just remove it; we can easily chain many TwoFilters instead.
57 lines
1.8 KiB
C++
57 lines
1.8 KiB
C++
/*
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* Copyright 2003-2021 The Music Player Daemon Project
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* http://www.musicpd.org
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*
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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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*
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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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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*/
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#include "LoadChain.hxx"
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#include "Factory.hxx"
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#include "Prepared.hxx"
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#include "plugins/AutoConvertFilterPlugin.hxx"
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#include "plugins/TwoFilters.hxx"
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#include "util/IterableSplitString.hxx"
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#include <string>
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static void
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filter_chain_append_new(std::unique_ptr<PreparedFilter> &chain,
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FilterFactory &factory,
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std::string_view template_name)
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{
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/* using the AutoConvert filter just in case the specified
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filter plugin does not support the exact input format */
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chain = ChainFilters(std::move(chain),
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/* unfortunately, MakeFilter() wants a
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null-terminated string, so we need to
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copy it here */
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autoconvert_filter_new(factory.MakeFilter(std::string(template_name).c_str())),
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template_name);
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}
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void
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filter_chain_parse(std::unique_ptr<PreparedFilter> &chain,
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FilterFactory &factory,
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const char *spec)
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{
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for (const std::string_view i : IterableSplitString(spec, ',')) {
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if (i.empty())
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continue;
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filter_chain_append_new(chain, factory, i);
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}
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}
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