Multiplier-free entropy coder

libentcode/probdec.h

@@ -0,0 +1,23 @@
+#if !defined(_probdec_H)
+# define _probdec_H (1)
+# include "probmod.h"
+# include "entdec.h"
+
+
+
+/*Decodes a single symbol using the given probability model and entropy
+   decoder.
+  Return: The decoded symbol.*/
+int ec_probmod_read(ec_probmod *_this,ec_dec *_dec);
+/*Decodes a single symbol using the given probability model and entropy
+   decoder, restricted to a given subrange of the available symbols.
+  This effectively sets the frequency counts of all the symbols outside this
+   range to zero, decodes the symbol, then restores the counts to their
+   original values, and updates the model.
+  _lo: The first legal symbol to decode.
+  _hi: One greater than the last legal symbol to decode.
+       This must be greater than _lo.
+  Return: The decoded symbol.*/
+int ec_probmod_read_range(ec_probmod *_this,ec_dec *_dec,int _lo,int _hi);
+
+#endif