1 files changed, 45 insertions, 0 deletions
diff --git a/video/out/filter_kernels.h b/video/out/filter_kernels.h
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+++ b/video/out/filter_kernels.h
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+/*
+ * This file is part of mplayer2.
+ *
+ * mplayer2 is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * mplayer2 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 General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with mplayer2; if not, write to the Free Software Foundation, Inc.,
+ * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+ */
+
+#ifndef MPLAYER_FILTER_KERNELS_H
+#define MPLAYER_FILTER_KERNELS_H
+
+#include <stdbool.h>
+
+struct filter_kernel {
+    const char *name;
+    double radius;
+    double (*weight)(struct filter_kernel *kernel, double x);
+
+    // The filter params can be changed at runtime. Only used by some filters.
+    float params[2];
+    // The following values are set by mp_init_filter() at runtime.
+    // Number of coefficients; equals the rounded up radius multiplied with 2.
+    int size;
+    double inv_scale;
+};
+
+extern const struct filter_kernel mp_filter_kernels[];
+
+const struct filter_kernel *mp_find_filter_kernel(const char *name);
+bool mp_init_filter(struct filter_kernel *filter, const int *sizes,
+                    double scale);
+void mp_compute_weights(struct filter_kernel *filter, double f, float *out_w);
+void mp_compute_lut(struct filter_kernel *filter, int count, float *out_array);
+
+#endif /* MPLAYER_FILTER_KERNELS_H */