diff options
Diffstat (limited to 'Alc/bformatdec.h')
| -rw-r--r-- | Alc/bformatdec.h | 45 |
1 files changed, 42 insertions, 3 deletions
diff --git a/Alc/bformatdec.h b/Alc/bformatdec.h index f2cdcdfb..d855041d 100644 --- a/Alc/bformatdec.h +++ b/Alc/bformatdec.h @@ -29,9 +29,48 @@ struct AmbDecConf; /* NOTE: These are scale factors as applied to Ambisonics content. Decoder * coefficients should be divided by these values to get proper N3D scalings. */ -extern const ALfloat N3D2N3DScale[MAX_AMBI_COEFFS]; -extern const ALfloat SN3D2N3DScale[MAX_AMBI_COEFFS]; -extern const ALfloat FuMa2N3DScale[MAX_AMBI_COEFFS]; +struct AmbiScale { + static constexpr float N3D2N3D[MAX_AMBI_COEFFS]{ + 1.0f, 1.0f, 1.0f, 1.0f, 1.0f, 1.0f, 1.0f, 1.0f, + 1.0f, 1.0f, 1.0f, 1.0f, 1.0f, 1.0f, 1.0f, 1.0f + }; + static constexpr float SN3D2N3D[MAX_AMBI_COEFFS]{ + 1.000000000f, /* ACN 0 (W), sqrt(1) */ + 1.732050808f, /* ACN 1 (Y), sqrt(3) */ + 1.732050808f, /* ACN 2 (Z), sqrt(3) */ + 1.732050808f, /* ACN 3 (X), sqrt(3) */ + 2.236067978f, /* ACN 4 (V), sqrt(5) */ + 2.236067978f, /* ACN 5 (T), sqrt(5) */ + 2.236067978f, /* ACN 6 (R), sqrt(5) */ + 2.236067978f, /* ACN 7 (S), sqrt(5) */ + 2.236067978f, /* ACN 8 (U), sqrt(5) */ + 2.645751311f, /* ACN 9 (Q), sqrt(7) */ + 2.645751311f, /* ACN 10 (O), sqrt(7) */ + 2.645751311f, /* ACN 11 (M), sqrt(7) */ + 2.645751311f, /* ACN 12 (K), sqrt(7) */ + 2.645751311f, /* ACN 13 (L), sqrt(7) */ + 2.645751311f, /* ACN 14 (N), sqrt(7) */ + 2.645751311f, /* ACN 15 (P), sqrt(7) */ + }; + static constexpr float FuMa2N3D[MAX_AMBI_COEFFS]{ + 1.414213562f, /* ACN 0 (W), sqrt(2) */ + 1.732050808f, /* ACN 1 (Y), sqrt(3) */ + 1.732050808f, /* ACN 2 (Z), sqrt(3) */ + 1.732050808f, /* ACN 3 (X), sqrt(3) */ + 1.936491673f, /* ACN 4 (V), sqrt(15)/2 */ + 1.936491673f, /* ACN 5 (T), sqrt(15)/2 */ + 2.236067978f, /* ACN 6 (R), sqrt(5) */ + 1.936491673f, /* ACN 7 (S), sqrt(15)/2 */ + 1.936491673f, /* ACN 8 (U), sqrt(15)/2 */ + 2.091650066f, /* ACN 9 (Q), sqrt(35/8) */ + 1.972026594f, /* ACN 10 (O), sqrt(35)/3 */ + 2.231093404f, /* ACN 11 (M), sqrt(224/45) */ + 2.645751311f, /* ACN 12 (K), sqrt(7) */ + 2.231093404f, /* ACN 13 (L), sqrt(224/45) */ + 1.972026594f, /* ACN 14 (N), sqrt(35)/3 */ + 2.091650066f, /* ACN 15 (P), sqrt(35/8) */ + }; +}; class BFormatDec { |