Constant AV_TX_FLOAT_DCT
pub const AV_TX_FLOAT_DCT: u32 = 9; // 9u32Expand description
Real to real (DCT) transforms.
The forward transform is a DCT-II. The inverse transform is a DCT-III.
The input array is always overwritten. DCT-III requires that the input be padded with 2 extra samples. Stride must be set to the spacing between two samples in bytes.