alc/ambdec.h

   1 #ifndef AMBDEC_H
   2 #define AMBDEC_H
   3
   4 #include <array>
   5 #include <string>
   6
   7 #include "ambidefs.h"
   8 #include "vector.h"
   9
  10 /* Helpers to read .ambdec configuration files. */
  11
  12 enum class AmbDecScale {
  13     N3D,
  14     SN3D,
  15     FuMa,
  16 };
  17 struct AmbDecConf {
  18     std::string Description;
  19     int Version{0}; /* Must be 3 */
  20
  21     unsigned int ChanMask{0u};
  22     unsigned int FreqBands{0u}; /* Must be 1 or 2 */
  23     AmbDecScale CoeffScale{};
  24
  25     float XOverFreq{0.0f};
  26     float XOverRatio{0.0f};
  27
  28     struct SpeakerConf {
  29         std::string Name;
  30         float Distance{0.0f};
  31         float Azimuth{0.0f};
  32         float Elevation{0.0f};
  33         std::string Connection;
  34     };
  35     al::vector<SpeakerConf> Speakers;
  36
  37     using CoeffArray = std::array<float,MAX_AMBI_CHANNELS>;
  38     /* Unused when FreqBands == 1 */
  39     float LFOrderGain[MAX_AMBI_ORDER+1]{};
  40     al::vector<CoeffArray> LFMatrix;
  41
  42     float HFOrderGain[MAX_AMBI_ORDER+1]{};
  43     al::vector<CoeffArray> HFMatrix;
  44
  45     int load(const char *fname) noexcept;
  46 };
  47
  48 #endif /* AMBDEC_H */