2
* Copyright (C) 2003-2013 The Music Player Daemon Project
3
* http://www.musicpd.org
5
* This program is free software; you can redistribute it and/or modify
6
* it under the terms of the GNU General Public License as published by
7
* the Free Software Foundation; either version 2 of the License, or
8
* (at your option) any later version.
10
* This program is distributed in the hope that it will be useful,
11
* but WITHOUT ANY WARRANTY; without even the implied warranty of
12
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13
* GNU General Public License for more details.
15
* You should have received a copy of the GNU General Public License along
16
* with this program; if not, write to the Free Software Foundation, Inc.,
17
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
22
* This filter plugin does nothing. That is not quite useful, except
23
* for testing the filter core, or as a template for new filter
28
#include "FilterPlugin.hxx"
29
#include "FilterInternal.hxx"
30
#include "FilterRegistry.hxx"
31
#include "AudioFormat.hxx"
34
class NullFilter final : public Filter {
36
virtual AudioFormat Open(AudioFormat &af,
37
gcc_unused Error &error) override {
41
virtual void Close() override {}
43
virtual const void *FilterPCM(const void *src, size_t src_size,
45
gcc_unused Error &error) override {
46
*dest_size_r = src_size;
52
null_filter_init(gcc_unused const config_param ¶m,
53
gcc_unused Error &error)
55
return new NullFilter();
58
const struct filter_plugin null_filter_plugin = {