| 49 | |
| 50 | namespace { |
| 51 | inline double cubic_interp(double p0, double p1, double p2, double p3, |
| 52 | double t) |
| 53 | { |
| 54 | double a0 = -0.5 * p0 + 1.5 * p1 - 1.5 * p2 + 0.5 * p3; |
| 55 | double a1 = p0 - 2.5 * p1 + 2.0 * p2 - 0.5 * p3; |
| 56 | double a2 = -0.5 * p0 + 0.5 * p2; |
| 57 | double a3 = p1; |
| 58 | return ((a0 * t + a1) * t + a2) * t + a3; |
| 59 | } |
| 60 | } // namespace |
| 61 | |
| 62 | std::shared_ptr<openshot::Frame> |