Diff: huffman.h

Revision:

0:7627c79db971

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/huffman.h	Fri Nov 26 12:18:30 2010 +0000
@@ -0,0 +1,66 @@
+/*
+ * libmad - MPEG audio decoder library
+ * Copyright (C) 2000-2004 Underbit Technologies, Inc.
+ *
+ * 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 of the License, 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
+ *
+ * $Id: huffman.h,v 1.1 2010/11/23 20:12:57 andy Exp $
+ */
+
+# ifndef LIBMAD_HUFFMAN_H
+# define LIBMAD_HUFFMAN_H
+
+union huffquad {
+  struct {
+    unsigned short final  :  1;
+    unsigned short bits   :  3;
+    unsigned short offset : 12;
+  } ptr;
+  struct {
+    unsigned short final  :  1;
+    unsigned short hlen   :  3;
+    unsigned short v      :  1;
+    unsigned short w      :  1;
+    unsigned short x      :  1;
+    unsigned short y      :  1;
+  } value;
+  unsigned short final    :  1;
+};
+
+union huffpair {
+  struct {
+    unsigned short final  :  1;
+    unsigned short bits   :  3;
+    unsigned short offset : 12;
+  } ptr;
+  struct {
+    unsigned short final  :  1;
+    unsigned short hlen   :  3;
+    unsigned short x      :  4;
+    unsigned short y      :  4;
+  } value;
+  unsigned short final    :  1;
+};
+
+struct hufftable {
+  union huffpair const *table;
+  unsigned short linbits;
+  unsigned short startbits;
+};
+
+extern union huffquad const *const mad_huff_quad_table[2];
+extern struct hufftable const mad_huff_pair_table[32];
+
+# endif