MPD  0.20.18
FormatConverter.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_FORMAT_CONVERTER_HXX
21 #define MPD_PCM_FORMAT_CONVERTER_HXX
22 
23 #include "check.h"
24 #include "SampleFormat.hxx"
25 #include "PcmBuffer.hxx"
26 #include "PcmDither.hxx"
27 
28 #ifndef NDEBUG
29 #include <assert.h>
30 #endif
31 
32 template<typename T> struct ConstBuffer;
33 
38  SampleFormat src_format, dest_format;
39 
40  PcmBuffer buffer;
41  PcmDither dither;
42 
43 public:
44 #ifndef NDEBUG
46  :src_format(SampleFormat::UNDEFINED),
47  dest_format(SampleFormat::UNDEFINED) {}
48 
50  assert(src_format == SampleFormat::UNDEFINED);
51  assert(dest_format == SampleFormat::UNDEFINED);
52  }
53 #endif
54 
63  void Open(SampleFormat src_format, SampleFormat dest_format);
64 
68  void Close() noexcept;
69 
76  gcc_pure
77  ConstBuffer<void> Convert(ConstBuffer<void> src) noexcept;
78 };
79 
80 #endif
gcc_pure ConstBuffer< void > Convert(ConstBuffer< void > src) noexcept
Convert a block of PCM data.
A class that converts samples from one format to another.
void Close() noexcept
Closes the object.
Manager for a temporary buffer which grows as needed.
Definition: PcmBuffer.hxx:33
SampleFormat
A reference to a memory area that is read-only.
Definition: FlacPcm.hxx:29
#define gcc_pure
Definition: Compiler.h:116
void Open(SampleFormat src_format, SampleFormat dest_format)
Opens the object, prepare for Convert().