unsafe void encode_residual_pass1(FlacFrame frame, int ch, int best_window)
{
int max_prediction_order = eparams.max_prediction_order;
int max_fixed_order = eparams.max_fixed_order;
int min_fixed_order = eparams.min_fixed_order;
int lpc_min_precision_search = eparams.lpc_min_precision_search;
int lpc_max_precision_search = eparams.lpc_max_precision_search;
int max_partition_order = eparams.max_partition_order;
int estimation_depth = eparams.estimation_depth;
eparams.min_fixed_order = 2;
eparams.max_fixed_order = 2;
eparams.lpc_min_precision_search = eparams.lpc_max_precision_search;
eparams.max_prediction_order = 8;
eparams.estimation_depth = 1;
encode_residual(frame, ch, eparams.prediction_type, OrderMethod.Akaike, 1, best_window);
eparams.min_fixed_order = min_fixed_order;
eparams.max_fixed_order = max_fixed_order;
eparams.max_prediction_order = max_prediction_order;
eparams.lpc_min_precision_search = lpc_min_precision_search;
eparams.lpc_max_precision_search = lpc_max_precision_search;
eparams.max_partition_order = max_partition_order;
eparams.estimation_depth = estimation_depth;
}
