MPD 0.20.6

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Resampler.hxx
Go to the documentation of this file.
1 /*
2 * Copyright 2003-2017 The Music Player Daemon Project
3 * http://www.musicpd.org
4 *
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.
9 *
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.
14 *
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.
18 */
19
20 #ifndef MPD_PCM_RESAMPLER_HXX
21 #define MPD_PCM_RESAMPLER_HXX
22
23 #include "util/ConstBuffer.hxx"
24 #include "Compiler.h"
25
26 struct AudioFormat;
27
32 class PcmResampler {
33 public:
34 virtual ~PcmResampler() {}
35
48 virtual AudioFormat Open(AudioFormat &af,
49 unsigned new_sample_rate) = 0;
50
55 virtual void Close() = 0;
56
60 virtual void Reset() {
61 }
62
70 gcc_pure
71 virtual ConstBuffer<void> Resample(ConstBuffer<void> src) = 0;
72 };
73
74 #endif
AudioFormat
This structure describes the format of a raw PCM stream.
Definition: AudioFormat.hxx:37
ConstBuffer< void >
Definition: ConstBuffer.hxx:45
PcmResampler::Close
virtual void Close()=0
Closes the resampler.
PcmResampler::Open
virtual AudioFormat Open(AudioFormat &af, unsigned new_sample_rate)=0
Opens the resampler, preparing it for Resample().
PcmResampler::Resample
virtual gcc_pure ConstBuffer< void > Resample(ConstBuffer< void > src)=0
Resamples a block of PCM data.
Compiler.h
PcmResampler::Reset
virtual void Reset()
Reset the filter's state, e.g.
Definition: Resampler.hxx:60
PcmResampler::~PcmResampler
virtual ~PcmResampler()
Definition: Resampler.hxx:34
PcmResampler
This is an interface for plugins that convert PCM data to a specific sample rate. ...
Definition: Resampler.hxx:32
ConstBuffer.hxx
gcc_pure
#define gcc_pure
Definition: Compiler.h:116