1 files changed, 35 insertions, 0 deletions
diff --git a/libavutil/pca.h b/libavutil/pca.h
new file mode 100644
index 0000000000..00ddd60c7e
--- /dev/null
+++ b/libavutil/pca.h
@@ -0,0 +1,35 @@
+/*
+ * principal component analysis (PCA)
+ * Copyright (c) 2004 Michael Niedermayer <michaelni@gmx.at>
+ *
+ * This file is part of FFmpeg.
+ *
+ * FFmpeg is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * FFmpeg is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with FFmpeg; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+/**
+ * @file
+ * principal component analysis (PCA)
+ */
+
+#ifndef AVUTIL_PCA_H
+#define AVUTIL_PCA_H
+
+struct PCA *ff_pca_init(int n);
+void ff_pca_free(struct PCA *pca);
+void ff_pca_add(struct PCA *pca, double *v);
+int ff_pca(struct PCA *pca, double *eigenvector, double *eigenvalue);
+
+#endif /* AVUTIL_PCA_H */