SphinxBase  0.6
huff_code.h
Go to the documentation of this file.
1 /* -*- c-basic-offset: 4; indent-tabs-mode: nil -*- */
2 /* ====================================================================
3  * Copyright (c) 2009 Carnegie Mellon University. All rights
4  * reserved.
5  *
6  * Redistribution and use in source and binary forms, with or without
7  * modification, are permitted provided that the following conditions
8  * are met:
9  *
10  * 1. Redistributions of source code must retain the above copyright
11  * notice, this list of conditions and the following disclaimer.
12  *
13  * 2. Redistributions in binary form must reproduce the above copyright
14  * notice, this list of conditions and the following disclaimer in
15  * the documentation and/or other materials provided with the
16  * distribution.
17  *
18  * This work was supported in part by funding from the Defense Advanced
19  * Research Projects Agency and the National Science Foundation of the
20  * United States of America, and the CMU Sphinx Speech Consortium.
21  *
22  * THIS SOFTWARE IS PROVIDED BY CARNEGIE MELLON UNIVERSITY ``AS IS'' AND
23  * ANY EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
24  * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
25  * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL CARNEGIE MELLON UNIVERSITY
26  * NOR ITS EMPLOYEES BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
27  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
28  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
29  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
30  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
31  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
32  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
33  *
34  * ====================================================================
35  *
36  */
37 
48 #ifndef __HUFF_CODE_H__
49 #define __HUFF_CODE_H__
50 
51 #include <stdio.h>
52 
53 #include <sphinxbase/sphinxbase_export.h>
54 #include <sphinxbase/prim_type.h>
55 #include <sphinxbase/cmd_ln.h>
56 
57 typedef struct huff_code_s huff_code_t;
58 
62 SPHINXBASE_EXPORT
63 huff_code_t *huff_code_build_int(int32 const *values, int32 const *frequencies, int nvals);
64 
68 SPHINXBASE_EXPORT
69 huff_code_t *huff_code_build_str(char * const *values, int32 const *frequencies, int nvals);
70 
74 SPHINXBASE_EXPORT
75 huff_code_t *huff_code_read(FILE *infh);
76 
80 SPHINXBASE_EXPORT
81 int huff_code_write(huff_code_t *hc, FILE *outfh);
82 
86 SPHINXBASE_EXPORT
87 int huff_code_dump(huff_code_t *hc, FILE *dumpfh);
88 
92 SPHINXBASE_EXPORT
94 
98 SPHINXBASE_EXPORT
100 
104 SPHINXBASE_EXPORT
105 FILE *huff_code_attach(huff_code_t *hc, FILE *fh, char const *mode);
106 
110 SPHINXBASE_EXPORT
111 FILE *huff_code_detach(huff_code_t *hc);
112 
116 SPHINXBASE_EXPORT
117 int huff_code_encode_int(huff_code_t *hc, int32 sym, uint32 *outcw);
118 
122 SPHINXBASE_EXPORT
123 int huff_code_encode_str(huff_code_t *hc, char const *sym, uint32 *outcw);
124 
128 SPHINXBASE_EXPORT
129 int huff_code_decode_int(huff_code_t *hc, int *outval,
130  char const **inout_data,
131  size_t *inout_data_len,
132  int *inout_offset);
133 
137 SPHINXBASE_EXPORT
138 char const *huff_code_decode_str(huff_code_t *hc,
139  char const **inout_data,
140  size_t *inout_data_len,
141  int *inout_offset);
142 
143 #endif /* __HUFF_CODE_H__ */