mpd/src/filter/FilterConfig.cxx

70 lines
2.0 KiB
C++

/*
* Copyright 2003-2016 The Music Player Daemon Project
* http://www.musicpd.org
*
* 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 2 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, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#include "config.h"
#include "FilterConfig.hxx"
#include "plugins/ChainFilterPlugin.hxx"
#include "FilterPlugin.hxx"
#include "config/Param.hxx"
#include "config/ConfigOption.hxx"
#include "config/ConfigGlobal.hxx"
#include "config/ConfigError.hxx"
#include "config/Block.hxx"
#include "util/RuntimeError.hxx"
#include <algorithm>
#include <string.h>
static void
filter_chain_append_new(PreparedFilter &chain, const char *template_name)
{
const auto *cfg = config_find_block(ConfigBlockOption::AUDIO_FILTER,
"name", template_name);
if (cfg == nullptr)
throw FormatRuntimeError("Filter template not found: %s",
template_name);
// Instantiate one of those filter plugins with the template name as a hint
PreparedFilter *f = filter_configured_new(*cfg);
const char *plugin_name = cfg->GetBlockValue("plugin",
"unknown");
filter_chain_append(chain, plugin_name, f);
}
void
filter_chain_parse(PreparedFilter &chain, const char *spec)
{
const char *const end = spec + strlen(spec);
while (true) {
const char *comma = std::find(spec, end, ',');
if (comma > spec) {
const std::string name(spec, comma);
filter_chain_append_new(chain, name.c_str());
}
if (comma == end)
break;
spec = comma + 1;
}
}