MPD  0.20.15
FloatConvert.hxx
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19 
20 #ifndef MPD_PCM_FLOAT_CONVERT_HXX
21 #define MPD_PCM_FLOAT_CONVERT_HXX
22 
23 #include "Traits.hxx"
24 
28 template<SampleFormat F, class Traits=SampleTraits<F>>
31  typedef Traits DstTraits;
32 
33  typedef typename SrcTraits::value_type SV;
34  typedef typename SrcTraits::long_type SL;
35  typedef typename DstTraits::value_type DV;
36 
37  static constexpr SV factor = 1 << (DstTraits::BITS - 1);
38 
39  gcc_const
40  static DV Convert(SV src) noexcept {
41  return PcmClamp<F, Traits>(SL(src * factor));
42  }
43 };
44 
48 template<SampleFormat F, class Traits=SampleTraits<F>>
51  typedef Traits SrcTraits;
52 
53  typedef typename SrcTraits::value_type SV;
54  typedef typename DstTraits::value_type DV;
55 
56  static constexpr DV factor = 0.5 / (1 << (SrcTraits::BITS - 2));
57 
58  gcc_const
59  static DV Convert(SV src) noexcept {
60  return DV(src) * factor;
61  }
62 };
63 
64 #endif
Convert from float to an integer sample format.
static gcc_const DV Convert(SV src) noexcept
SrcTraits::value_type SV
static constexpr SV factor
SampleTraits< SampleFormat::FLOAT > DstTraits
#define gcc_const
Definition: Compiler.h:109
SrcTraits::value_type SV
Convert from an integer sample format to float.
DstTraits::value_type DV
SampleTraits< SampleFormat::FLOAT > SrcTraits
SrcTraits::long_type SL
static constexpr DV factor
DstTraits::value_type DV
static gcc_const DV Convert(SV src) noexcept