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author | Max Kellermann <max@duempel.org> | 2014-01-24 16:31:52 +0100 |
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committer | Max Kellermann <max@duempel.org> | 2014-01-24 16:43:57 +0100 |
commit | 7c52a1c04bccac68f4220c8bf3d3a59c16ed58db (patch) | |
tree | 6c1f8b99225343974584817b3278958599e2e12a /src/filter/plugins/NullFilterPlugin.cxx | |
parent | 9d34fc394ce30a28ec0e43f2ad7172b8de8b3be6 (diff) | |
download | mpd-7c52a1c04bccac68f4220c8bf3d3a59c16ed58db.tar.gz mpd-7c52a1c04bccac68f4220c8bf3d3a59c16ed58db.tar.xz mpd-7c52a1c04bccac68f4220c8bf3d3a59c16ed58db.zip |
Filter*: move to filter/
Diffstat (limited to 'src/filter/plugins/NullFilterPlugin.cxx')
-rw-r--r-- | src/filter/plugins/NullFilterPlugin.cxx | 61 |
1 files changed, 61 insertions, 0 deletions
diff --git a/src/filter/plugins/NullFilterPlugin.cxx b/src/filter/plugins/NullFilterPlugin.cxx new file mode 100644 index 000000000..f79aa19f7 --- /dev/null +++ b/src/filter/plugins/NullFilterPlugin.cxx @@ -0,0 +1,61 @@ +/* + * Copyright (C) 2003-2014 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. + */ + +/** \file + * + * This filter plugin does nothing. That is not quite useful, except + * for testing the filter core, or as a template for new filter + * plugins. + */ + +#include "config.h" +#include "filter/FilterPlugin.hxx" +#include "filter/FilterInternal.hxx" +#include "filter/FilterRegistry.hxx" +#include "AudioFormat.hxx" +#include "Compiler.h" + +class NullFilter final : public Filter { +public: + virtual AudioFormat Open(AudioFormat &af, + gcc_unused Error &error) override { + return af; + } + + virtual void Close() override {} + + virtual const void *FilterPCM(const void *src, size_t src_size, + size_t *dest_size_r, + gcc_unused Error &error) override { + *dest_size_r = src_size; + return src; + } +}; + +static Filter * +null_filter_init(gcc_unused const config_param ¶m, + gcc_unused Error &error) +{ + return new NullFilter(); +} + +const struct filter_plugin null_filter_plugin = { + "null", + null_filter_init, +}; |