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authorChris Robinson <[email protected]>2021-01-21 02:05:55 -0800
committerChris Robinson <[email protected]>2021-01-21 04:03:30 -0800
commit20f5e7c1fafcd40cdee2f7226ae81480ae049d1a (patch)
tree3b7e1aef92cefcbea1b9fca7f472d4831c0322cb /core/ambidefs.h
parent92c653e5f0617befccf0bd44d035f821ec7cb1ba (diff)
Avoid global constexpr arrays
Diffstat (limited to 'core/ambidefs.h')
-rw-r--r--core/ambidefs.h196
1 files changed, 116 insertions, 80 deletions
diff --git a/core/ambidefs.h b/core/ambidefs.h
index ed8c27fb..a72f7b78 100644
--- a/core/ambidefs.h
+++ b/core/ambidefs.h
@@ -45,91 +45,127 @@ constexpr size_t MaxAmbi2DChannels{Ambi2DChannelsFromOrder(MaxAmbiOrder)};
* coefficients should be divided by these values to get proper scalings.
*/
struct AmbiScale {
- static constexpr std::array<float,MaxAmbiChannels> FromN3D{{
- 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 std::array<float,MaxAmbiChannels> FromSN3D{{
- 1.000000000f, /* ACN 0, sqrt(1) */
- 1.732050808f, /* ACN 1, sqrt(3) */
- 1.732050808f, /* ACN 2, sqrt(3) */
- 1.732050808f, /* ACN 3, sqrt(3) */
- 2.236067978f, /* ACN 4, sqrt(5) */
- 2.236067978f, /* ACN 5, sqrt(5) */
- 2.236067978f, /* ACN 6, sqrt(5) */
- 2.236067978f, /* ACN 7, sqrt(5) */
- 2.236067978f, /* ACN 8, sqrt(5) */
- 2.645751311f, /* ACN 9, sqrt(7) */
- 2.645751311f, /* ACN 10, sqrt(7) */
- 2.645751311f, /* ACN 11, sqrt(7) */
- 2.645751311f, /* ACN 12, sqrt(7) */
- 2.645751311f, /* ACN 13, sqrt(7) */
- 2.645751311f, /* ACN 14, sqrt(7) */
- 2.645751311f, /* ACN 15, sqrt(7) */
- }};
- static constexpr std::array<float,MaxAmbiChannels> FromFuMa{{
- 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) */
- }};
+ static auto& FromN3D() noexcept
+ {
+ static constexpr const std::array<float,MaxAmbiChannels> ret{{
+ 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
+ }};
+ return ret;
+ }
+ static auto& FromSN3D() noexcept
+ {
+ static constexpr const std::array<float,MaxAmbiChannels> ret{{
+ 1.000000000f, /* ACN 0, sqrt(1) */
+ 1.732050808f, /* ACN 1, sqrt(3) */
+ 1.732050808f, /* ACN 2, sqrt(3) */
+ 1.732050808f, /* ACN 3, sqrt(3) */
+ 2.236067978f, /* ACN 4, sqrt(5) */
+ 2.236067978f, /* ACN 5, sqrt(5) */
+ 2.236067978f, /* ACN 6, sqrt(5) */
+ 2.236067978f, /* ACN 7, sqrt(5) */
+ 2.236067978f, /* ACN 8, sqrt(5) */
+ 2.645751311f, /* ACN 9, sqrt(7) */
+ 2.645751311f, /* ACN 10, sqrt(7) */
+ 2.645751311f, /* ACN 11, sqrt(7) */
+ 2.645751311f, /* ACN 12, sqrt(7) */
+ 2.645751311f, /* ACN 13, sqrt(7) */
+ 2.645751311f, /* ACN 14, sqrt(7) */
+ 2.645751311f, /* ACN 15, sqrt(7) */
+ }};
+ return ret;
+ }
+ static auto& FromFuMa() noexcept
+ {
+ static constexpr const std::array<float,MaxAmbiChannels> ret{{
+ 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) */
+ }};
+ return ret;
+ }
};
struct AmbiIndex {
- static constexpr std::array<uint8_t,MaxAmbiChannels> FromFuMa{{
- 0, /* W */
- 3, /* X */
- 1, /* Y */
- 2, /* Z */
- 6, /* R */
- 7, /* S */
- 5, /* T */
- 8, /* U */
- 4, /* V */
- 12, /* K */
- 13, /* L */
- 11, /* M */
- 14, /* N */
- 10, /* O */
- 15, /* P */
- 9, /* Q */
- }};
- static constexpr std::array<uint8_t,MaxAmbi2DChannels> FromFuMa2D{{
- 0, /* W */
- 3, /* X */
- 1, /* Y */
- 8, /* U */
- 4, /* V */
- 15, /* P */
- 9, /* Q */
- }};
+ static auto& FromFuMa() noexcept
+ {
+ static constexpr const std::array<uint8_t,MaxAmbiChannels> ret{{
+ 0, /* W */
+ 3, /* X */
+ 1, /* Y */
+ 2, /* Z */
+ 6, /* R */
+ 7, /* S */
+ 5, /* T */
+ 8, /* U */
+ 4, /* V */
+ 12, /* K */
+ 13, /* L */
+ 11, /* M */
+ 14, /* N */
+ 10, /* O */
+ 15, /* P */
+ 9, /* Q */
+ }};
+ return ret;
+ }
+ static auto& FromFuMa2D() noexcept
+ {
+ static constexpr const std::array<uint8_t,MaxAmbi2DChannels> ret{{
+ 0, /* W */
+ 3, /* X */
+ 1, /* Y */
+ 8, /* U */
+ 4, /* V */
+ 15, /* P */
+ 9, /* Q */
+ }};
+ return ret;
+ }
- static constexpr std::array<uint8_t,MaxAmbiChannels> FromACN{{
- 0, 1, 2, 3, 4, 5, 6, 7,
- 8, 9, 10, 11, 12, 13, 14, 15
- }};
- static constexpr std::array<uint8_t,MaxAmbi2DChannels> FromACN2D{{
- 0, 1,3, 4,8, 9,15
- }};
+ static auto& FromACN() noexcept
+ {
+ static constexpr const std::array<uint8_t,MaxAmbiChannels> ret{{
+ 0, 1, 2, 3, 4, 5, 6, 7,
+ 8, 9, 10, 11, 12, 13, 14, 15
+ }};
+ return ret;
+ }
+ static auto& FromACN2D() noexcept
+ {
+ static constexpr const std::array<uint8_t,MaxAmbi2DChannels> ret{{
+ 0, 1,3, 4,8, 9,15
+ }};
+ return ret;
+ }
- static constexpr std::array<uint8_t,MaxAmbiChannels> OrderFromChannel{{
- 0, 1,1,1, 2,2,2,2,2, 3,3,3,3,3,3,3,
- }};
- static constexpr std::array<uint8_t,MaxAmbi2DChannels> OrderFrom2DChannel{{
- 0, 1,1, 2,2, 3,3,
- }};
+ static auto& OrderFromChannel() noexcept
+ {
+ static constexpr const std::array<uint8_t,MaxAmbiChannels> ret{{
+ 0, 1,1,1, 2,2,2,2,2, 3,3,3,3,3,3,3,
+ }};
+ return ret;
+ }
+ static auto& OrderFrom2DChannel() noexcept
+ {
+ static constexpr const std::array<uint8_t,MaxAmbi2DChannels> ret{{
+ 0, 1,1, 2,2, 3,3,
+ }};
+ return ret;
+ }
};
#endif /* CORE_AMBIDEFS_H */
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