avutil/pca: Make argument of ff_pca_add() const

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

2 files changed, 2 insertions, 2 deletions

diff --git a/libavutil/pca.c b/libavutil/pca.c
index 26d5bbb157..f7ae350b48 100644
--- a/libavutil/pca.c
+++ b/libavutil/pca.c
@@ -57,7 +57,7 @@ void ff_pca_free(PCA *pca){
     av_free(pca);
 }
 
-void ff_pca_add(PCA *pca, double *v){
+void ff_pca_add(PCA *pca, const double *v){
     int i, j;
     const int n= pca->n;
 
diff --git a/libavutil/pca.h b/libavutil/pca.h
index 00ddd60c7e..992bb2eb25 100644
--- a/libavutil/pca.h
+++ b/libavutil/pca.h
@@ -29,7 +29,7 @@
 
 struct PCA *ff_pca_init(int n);
 void ff_pca_free(struct PCA *pca);
-void ff_pca_add(struct PCA *pca, double *v);
+void ff_pca_add(struct PCA *pca, const double *v);
 int ff_pca(struct PCA *pca, double *eigenvector, double *eigenvalue);
 
 #endif /* AVUTIL_PCA_H */