MPD  0.20.6
Resampler.hxx
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1 /*
2  * Copyright 2003-2017 The Music Player Daemon Project
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4  *
5  * This program is free software; you can redistribute it and/or modify
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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
72 };
73 
74 #endif
This structure describes the format of a raw PCM stream.
Definition: AudioFormat.hxx:37
virtual void Close()=0
Closes the resampler.
virtual AudioFormat Open(AudioFormat &af, unsigned new_sample_rate)=0
Opens the resampler, preparing it for Resample().
virtual gcc_pure ConstBuffer< void > Resample(ConstBuffer< void > src)=0
Resamples a block of PCM data.
virtual void Reset()
Reset the filter's state, e.g.
Definition: Resampler.hxx:60
virtual ~PcmResampler()
Definition: Resampler.hxx:34
This is an interface for plugins that convert PCM data to a specific sample rate. ...
Definition: Resampler.hxx:32
#define gcc_pure
Definition: Compiler.h:116