1 files changed, 61 insertions, 0 deletions

diff --git a/converter/other/fiasco/codec/coeff.h b/converter/other/fiasco/codec/coeff.h
new file mode 100644
index 00000000..118cd0fc
--- /dev/null
+++ b/converter/other/fiasco/codec/coeff.h
@@ -0,0 +1,61 @@
+/*
+ *  coeff.h
+ *
+ *  Written by:		Ullrich Hafner
+ *		
+ *  This file is part of FIASCO («F»ractal «I»mage «A»nd «S»equence «CO»dec)
+ *  Copyright (C) 1994-2000 Ullrich Hafner <hafner@bigfoot.de>
+ */
+
+/*
+ *  $Date: 2000/06/14 20:50:51 $
+ *  $Author: hafner $
+ *  $Revision: 5.1 $
+ *  $State: Exp $
+ */
+
+#ifndef _COEFF_H
+#define _COEFF_H
+
+#include "types.h"
+#include "rpf.h"
+#include "wfa.h"
+
+typedef struct coeff
+{
+   rpf_t    *rpf;			/* reduced precision format */
+   rpf_t    *dc_rpf;			/* RPF of DC (state 0) component */
+   unsigned min_level, max_level;	/* allocate memory for [min,..,max] */
+   void	    *model;			/* generic pointer to prob. model */
+   real_t (*bits) (const real_t *used_coeff, const word_t *used_domains,
+		   unsigned level, const struct coeff *coeff);
+   /*
+    *  Compute bit-rate of a range approximation with coefficients given by
+    *  -1 terminated list 'used_domains'.
+    */
+   void   (*update) (const real_t *used_coeff, const word_t *used_domains,
+		       unsigned level, struct coeff *coeff);
+   /*
+    *  Update the probability model according to the chosen approximation.
+    *  (given by the -1 terminated list 'used_domains').
+    */
+   void	  (*free) (struct coeff *coeff);
+   /*
+    *  Discard the given coefficients struct.
+    */
+   void   (*model_free) (void *model);
+   /*
+    *  Free given probability model.
+    */
+   void   *(*model_duplicate) (const struct coeff *coeff, const void *model);
+   /*
+    *  Duplicate the given probability model (i.e. alloc and copy).
+    */
+} coeff_t;
+
+coeff_t *
+alloc_coeff_model (const char *coeff_model_name, rpf_t *rpf, rpf_t *dc_rpf,
+		   unsigned min_level, unsigned max_level);
+
+#endif /* not _COEFF_H */
+