diff options
| author | Chris Robinson <[email protected]> | 2019-02-21 04:05:49 -0800 |
|---|---|---|
| committer | Chris Robinson <[email protected]> | 2019-02-21 04:05:49 -0800 |
| commit | a9648905378b8a3321742bb0e498227cfc6ee5f6 (patch) | |
| tree | e9f3c91b810b1e042d3153ceb512896195bf23d7 /Alc/ambidefs.h | |
| parent | a35255291f946c634219da71b287339654eeff3c (diff) | |
Add helpers to get the channel count from an ambisonic order
Diffstat (limited to 'Alc/ambidefs.h')
| -rw-r--r-- | Alc/ambidefs.h | 8 |
1 files changed, 6 insertions, 2 deletions
diff --git a/Alc/ambidefs.h b/Alc/ambidefs.h index 2b04d70b..bdecfae0 100644 --- a/Alc/ambidefs.h +++ b/Alc/ambidefs.h @@ -8,7 +8,9 @@ * order has 9, third-order has 16, and fourth-order has 25. */ #define MAX_AMBI_ORDER 3 -#define MAX_AMBI_CHANNELS ((MAX_AMBI_ORDER+1) * (MAX_AMBI_ORDER+1)) +constexpr inline size_t AmbiChannelsFromOrder(size_t order) noexcept +{ return (order+1) * (order+1); } +#define MAX_AMBI_CHANNELS AmbiChannelsFromOrder(MAX_AMBI_ORDER) /* A bitmask of ambisonic channels for 0 to 4th order. This only specifies up * to 4th order, which is the highest order a 32-bit mask value can specify (a @@ -30,7 +32,9 @@ * representation. This is 2 per each order above zero-order, plus 1 for zero- * order. Or simply, o*2 + 1. */ -#define MAX_AMBI2D_CHANNELS (MAX_AMBI_ORDER*2 + 1) +constexpr inline size_t Ambi2DChannelsFromOrder(size_t order) noexcept +{ return order*2 + 1; } +#define MAX_AMBI2D_CHANNELS Ambi2DChannelsFromOrder(MAX_AMBI_CHANNELS) /* NOTE: These are scale factors as applied to Ambisonics content. Decoder |