core/storage_formats.cpp

   1
   2 #include "config.h"
   3
   4 #include "storage_formats.h"
   5
   6 #include <cstdint>
   7
   8
   9 const char *NameFromFormat(FmtType type) noexcept
  10 {
  11     switch(type)
  12     {
  13     case FmtUByte: return "UInt8";
  14     case FmtShort: return "Int16";
  15     case FmtInt: return "Int32";
  16     case FmtFloat: return "Float";
  17     case FmtDouble: return "Double";
  18     case FmtMulaw: return "muLaw";
  19     case FmtAlaw: return "aLaw";
  20     case FmtIMA4: return "IMA4 ADPCM";
  21     case FmtMSADPCM: return "MS ADPCM";
  22     }
  23     return "<internal error>";
  24 }
  25
  26 const char *NameFromFormat(FmtChannels channels) noexcept
  27 {
  28     switch(channels)
  29     {
  30     case FmtMono: return "Mono";
  31     case FmtStereo: return "Stereo";
  32     case FmtRear: return "Rear";
  33     case FmtQuad: return "Quadraphonic";
  34     case FmtX51: return "Surround 5.1";
  35     case FmtX61: return "Surround 6.1";
  36     case FmtX71: return "Surround 7.1";
  37     case FmtBFormat2D: return "B-Format 2D";
  38     case FmtBFormat3D: return "B-Format 3D";
  39     case FmtUHJ2: return "UHJ2";
  40     case FmtUHJ3: return "UHJ3";
  41     case FmtUHJ4: return "UHJ4";
  42     case FmtSuperStereo: return "Super Stereo";
  43     case FmtMonoDup: return "Mono (dup)";
  44     }
  45     return "<internal error>";
  46 }
  47
  48 uint BytesFromFmt(FmtType type) noexcept
  49 {
  50     switch(type)
  51     {
  52     case FmtUByte: return sizeof(std::uint8_t);
  53     case FmtShort: return sizeof(std::int16_t);
  54     case FmtInt: return sizeof(std::int32_t);
  55     case FmtFloat: return sizeof(float);
  56     case FmtDouble: return sizeof(double);
  57     case FmtMulaw: return sizeof(std::uint8_t);
  58     case FmtAlaw: return sizeof(std::uint8_t);
  59     case FmtIMA4: break;
  60     case FmtMSADPCM: break;
  61     }
  62     return 0;
  63 }
  64
  65 uint ChannelsFromFmt(FmtChannels chans, uint ambiorder) noexcept
  66 {
  67     switch(chans)
  68     {
  69     case FmtMono: return 1;
  70     case FmtStereo: return 2;
  71     case FmtRear: return 2;
  72     case FmtQuad: return 4;
  73     case FmtX51: return 6;
  74     case FmtX61: return 7;
  75     case FmtX71: return 8;
  76     case FmtBFormat2D: return (ambiorder*2) + 1;
  77     case FmtBFormat3D: return (ambiorder+1) * (ambiorder+1);
  78     case FmtUHJ2: return 2;
  79     case FmtUHJ3: return 3;
  80     case FmtUHJ4: return 4;
  81     case FmtSuperStereo: return 2;
  82     case FmtMonoDup: return 1;
  83     }
  84     return 0;
  85 }