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diff --git a/src/post/deinterlace/tvtime.h b/src/post/deinterlace/tvtime.h
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+++ b/src/post/deinterlace/tvtime.h
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+/**
+ * Copyright (c) 2001, 2002, 2003 Billy Biggs <vektor@dumbterm.net>.
+ *
+ * This program 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, or (at your option)
+ * any later version.
+ *
+ * This program 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 this program; if not, write to the Free Software Foundation,
+ * Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+ */
+
+#ifndef TVTIME_H_INCLUDED
+#define TVTIME_H_INCLUDED
+
+#include "deinterlace.h"
+
+/**
+ * Which pulldown algorithm we're using.
+ */
+enum {
+    PULLDOWN_NONE = 0,
+    PULLDOWN_VEKTOR = 1, /* vektor's adaptive pulldown detection. */
+    PULLDOWN_DALIAS = 2, /* Using dalias's pulldown detection */
+    PULLDOWN_MAX = 4,
+};
+
+enum
+{
+    FRAMERATE_FULL = 0,
+    FRAMERATE_HALF_TFF = 1,
+    FRAMERATE_HALF_BFF = 2,
+    FRAMERATE_MAX = 3
+};
+
+
+typedef struct {
+  /**
+   * Which pulldown algorithm we're using.
+   */
+  unsigned int pulldown_alg;
+
+  /**
+   * Current deinterlacing method.
+   */
+  deinterlace_method_t *curmethod;
+
+
+  /* internal data */
+  int last_topdiff;
+  int last_botdiff;
+
+  int pdoffset;
+  int pderror;
+  int pdlastbusted;
+  int filmmode;
+
+
+} tvtime_t;
+
+
+int tvtime_build_deinterlaced_frame( tvtime_t *this, uint8_t *output,
+                                             uint8_t *curframe,
+                                             uint8_t *lastframe,
+                                             uint8_t *secondlastframe,
+                                             int bottom_field,
+                                             int width,
+                                             int frame_height,
+                                             int instride,
+                                             int outstride );
+
+
+int tvtime_build_copied_field( tvtime_t *this, uint8_t *output,
+                                       uint8_t *curframe,
+                                       int bottom_field,
+                                       int width,
+                                       int frame_height,
+                                       int instride,
+                                       int outstride );
+tvtime_t *tvtime_new_context(void);
+
+void tvtime_reset_context( tvtime_t *this );
+
+
+#endif