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SoxrResampler.hxx
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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_SOXR_RESAMPLER_HXX
21 #define MPD_PCM_SOXR_RESAMPLER_HXX
22
23 #include "Resampler.hxx"
24 #include "PcmBuffer.hxx"
25 #include "Compiler.h"
26
27 struct AudioFormat;
28 struct ConfigBlock;
29
33 class SoxrPcmResampler final : public PcmResampler {
34 struct soxr *soxr;
35
36 unsigned channels;
37 float ratio;
38
39 PcmBuffer buffer;
40
41 public:
42 AudioFormat Open(AudioFormat &af, unsigned new_sample_rate) override;
43 void Close() override;
44 ConstBuffer<void> Resample(ConstBuffer<void> src) override;
45 };
46
47 void
48 pcm_resample_soxr_global_init(const ConfigBlock &block);
49
50 #endif
AudioFormat
This structure describes the format of a raw PCM stream.
Definition: AudioFormat.hxx:37
ConstBuffer< void >
Definition: ConstBuffer.hxx:45
pcm_resample_soxr_global_init
void pcm_resample_soxr_global_init(const ConfigBlock &block)
SoxrPcmResampler
A resampler using soxr.
Definition: SoxrResampler.hxx:33
Resampler.hxx
PcmBuffer.hxx
SoxrPcmResampler::Resample
ConstBuffer< void > Resample(ConstBuffer< void > src) override
Resamples a block of PCM data.
ConfigBlock
Definition: Block.hxx:57
Compiler.h
PcmResampler
This is an interface for plugins that convert PCM data to a specific sample rate. ...
Definition: Resampler.hxx:32
PcmBuffer
Manager for a temporary buffer which grows as needed.
Definition: PcmBuffer.hxx:33
SoxrPcmResampler::Open
AudioFormat Open(AudioFormat &af, unsigned new_sample_rate) override
Opens the resampler, preparing it for Resample().
SoxrPcmResampler::Close
void Close() override
Closes the resampler.