| 47 | constexpr double signalBreakChromaP010 = 0.75; |
| 48 | |
| 49 | static double packChromaP010(double x) |
| 50 | { |
| 51 | constexpr double pi2 = M_PI / 2.0; |
| 52 | if (x < 0.0) |
| 53 | { |
| 54 | return 0.0; |
| 55 | } |
| 56 | else if (x <= 0.5) |
| 57 | { |
| 58 | return x * 1.5; |
| 59 | } |
| 60 | else if (x <= 1) |
| 61 | { |
| 62 | return std::sin(pi2 * ((x - 0.5) / 0.5)) * (1 - signalBreakChromaP010) + signalBreakChromaP010; |
| 63 | } |
| 64 | return 1; |
| 65 | }; |
| 66 | |
| 67 | double unpackChromaP010(double x) |
| 68 | { |