00001 /* -*- c-basic-offset: 4; indent-tabs-mode: nil -*- */ 00002 /* ==================================================================== 00003 * Copyright (c) 2009 Carnegie Mellon University. All rights 00004 * reserved. 00005 * 00006 * Redistribution and use in source and binary forms, with or without 00007 * modification, are permitted provided that the following conditions 00008 * are met: 00009 * 00010 * 1. Redistributions of source code must retain the above copyright 00011 * notice, this list of conditions and the following disclaimer. 00012 * 00013 * 2. Redistributions in binary form must reproduce the above copyright 00014 * notice, this list of conditions and the following disclaimer in 00015 * the documentation and/or other materials provided with the 00016 * distribution. 00017 * 00018 * This work was supported in part by funding from the Defense Advanced 00019 * Research Projects Agency and the National Science Foundation of the 00020 * United States of America, and the CMU Sphinx Speech Consortium. 00021 * 00022 * THIS SOFTWARE IS PROVIDED BY CARNEGIE MELLON UNIVERSITY ``AS IS'' AND 00023 * ANY EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, 00024 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 00025 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL CARNEGIE MELLON UNIVERSITY 00026 * NOR ITS EMPLOYEES BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 00027 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 00028 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 00029 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 00030 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 00031 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 00032 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 00033 * 00034 * ==================================================================== 00035 * 00036 */ 00037 00048 #ifndef __HUFF_CODE_H__ 00049 #define __HUFF_CODE_H__ 00050 00051 #include <stdio.h> 00052 00053 #include <prim_type.h> 00054 #include <cmd_ln.h> 00055 00056 typedef struct huff_code_s huff_code_t; 00057 00061 huff_code_t *huff_code_build_int(int32 const *values, int32 const *frequencies, int nvals); 00062 00066 huff_code_t *huff_code_build_str(char * const *values, int32 const *frequencies, int nvals); 00067 00071 huff_code_t *huff_code_read(FILE *infh); 00072 00076 int huff_code_write(huff_code_t *hc, FILE *outfh); 00077 00081 int huff_code_dump(huff_code_t *hc, FILE *dumpfh); 00082 00086 huff_code_t *huff_code_retain(huff_code_t *hc); 00087 00091 int huff_code_free(huff_code_t *hc); 00092 00096 FILE *huff_code_attach(huff_code_t *hc, FILE *fh, char const *mode); 00097 00101 FILE *huff_code_detach(huff_code_t *hc); 00102 00106 int huff_code_encode_int(huff_code_t *hc, int32 sym, uint32 *outcw); 00107 00111 int huff_code_encode_str(huff_code_t *hc, char const *sym, uint32 *outcw); 00112 00116 int huff_code_decode_int(huff_code_t *hc, int *outval, 00117 char const **inout_data, 00118 size_t *inout_data_len, 00119 int *inout_offset); 00120 00124 char const *huff_code_decode_str(huff_code_t *hc, 00125 char const **inout_data, 00126 size_t *inout_data_len, 00127 int *inout_offset); 00128 00129 #endif /* __HUFF_CODE_H__ */