🛠️🐜 Antkeeper superbuild with dependencies included
https://antkeeper.com
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
44 lines
1.1 KiB
44 lines
1.1 KiB
|
|
#include "config.h"
|
|
|
|
#include "ambidefs.h"
|
|
|
|
#include <cassert>
|
|
|
|
|
|
namespace {
|
|
|
|
constexpr std::array<float,MaxAmbiOrder+1> Ambi3DDecoderHFScale{{
|
|
1.00000000e+00f, 1.00000000e+00f
|
|
}};
|
|
constexpr std::array<float,MaxAmbiOrder+1> Ambi3DDecoderHFScale2O{{
|
|
7.45355990e-01f, 1.00000000e+00f, 1.00000000e+00f
|
|
}};
|
|
constexpr std::array<float,MaxAmbiOrder+1> Ambi3DDecoderHFScale3O{{
|
|
5.89792205e-01f, 8.79693856e-01f, 1.00000000e+00f, 1.00000000e+00f
|
|
}};
|
|
|
|
inline auto& GetDecoderHFScales(uint order) noexcept
|
|
{
|
|
if(order >= 3) return Ambi3DDecoderHFScale3O;
|
|
if(order == 2) return Ambi3DDecoderHFScale2O;
|
|
return Ambi3DDecoderHFScale;
|
|
}
|
|
|
|
} // namespace
|
|
|
|
auto AmbiScale::GetHFOrderScales(const uint in_order, const uint out_order) noexcept
|
|
-> std::array<float,MaxAmbiOrder+1>
|
|
{
|
|
std::array<float,MaxAmbiOrder+1> ret{};
|
|
|
|
assert(out_order >= in_order);
|
|
|
|
const auto &target = GetDecoderHFScales(out_order);
|
|
const auto &input = GetDecoderHFScales(in_order);
|
|
|
|
for(size_t i{0};i < in_order+1;++i)
|
|
ret[i] = input[i] / target[i];
|
|
|
|
return ret;
|
|
}
|