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-rw-r--r--libavcodec/lpc.c12
1 files changed, 12 insertions, 0 deletions
diff --git a/libavcodec/lpc.c b/libavcodec/lpc.c
index 126dbc1266..2093e7e802 100644
--- a/libavcodec/lpc.c
+++ b/libavcodec/lpc.c
@@ -148,6 +148,18 @@ static int estimate_best_order(double *ref, int min_order, int max_order)
return est;
}
+int ff_lpc_calc_ref_coefs(LPCContext *s,
+ const int32_t *samples, int order, double *ref)
+{
+ double autoc[MAX_LPC_ORDER + 1];
+
+ s->lpc_apply_welch_window(samples, s->blocksize, s->windowed_samples);
+ s->lpc_compute_autocorr(s->windowed_samples, s->blocksize, order, autoc);
+ compute_ref_coefs(autoc, order, ref, NULL);
+
+ return order;
+}
+
/**
* Calculate LPC coefficients for multiple orders
*