int scaling_shift;
/**
- * Specifies the auto-regression lag. The number of coefficients is given by
- * 2*ar_coeff_lag(ar_coeff_lag - 1), with an extra one for the chroma.
+ * Specifies the auto-regression lag.
*/
int ar_coeff_lag;
/**
- * Luma auto-regression coefficients.
+ * Luma auto-regression coefficients. The number of coefficients is given by
+ * 2 * ar_coeff_lag * (ar_coeff_lag + 1).
*/
int8_t ar_coeffs_y[24];
/**
- * Chroma auto-regression coefficients.
+ * Chroma auto-regression coefficients. The number of coefficients is given by
+ * 2 * ar_coeff_lag * (ar_coeff_lag + 1) + !!num_y_points.
*/
int8_t ar_coeffs_uv[2 /* cb, cr */][25];