Main Page
Related Pages
Modules
Data Structures
Files
Examples
File List
Globals
libavcodec
huffman.h
Go to the documentation of this file.
1
/*
2
* Copyright (C) 2007 Aurelien Jacobs <aurel@gnuage.org>
3
*
4
* This file is part of Libav.
5
*
6
* Libav is free software; you can redistribute it and/or
7
* modify it under the terms of the GNU Lesser General Public
8
* License as published by the Free Software Foundation; either
9
* version 2.1 of the License, or (at your option) any later version.
10
*
11
* Libav is distributed in the hope that it will be useful,
12
* but WITHOUT ANY WARRANTY; without even the implied warranty of
13
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14
* Lesser General Public License for more details.
15
*
16
* You should have received a copy of the GNU Lesser General Public
17
* License along with Libav; if not, write to the Free Software
18
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
19
*/
20
26
#ifndef AVCODEC_HUFFMAN_H
27
#define AVCODEC_HUFFMAN_H
28
29
#include "
avcodec.h
"
30
#include "
get_bits.h
"
31
32
typedef
struct
{
33
int16_t
sym
;
34
int16_t
n0
;
35
uint32_t
count
;
36
}
Node
;
37
38
#define FF_HUFFMAN_FLAG_HNODE_FIRST 0x01
39
#define FF_HUFFMAN_FLAG_ZERO_COUNT 0x02
40
41
typedef
int (*
HuffCmp
)(
const
void
*va,
const
void
*vb);
42
int
ff_huff_build_tree
(
AVCodecContext
*avctx,
VLC
*vlc,
int
nb_codes,
43
Node
*nodes,
HuffCmp
cmp
,
int
flags
);
44
45
#endif
/* AVCODEC_HUFFMAN_H */