Statistics
| Branch: | Revision:

ffmpeg / libavcodec / svq1.h @ 2912e87a

History | View | Annotate | Download (2.04 KB)

1
/*
2
 * SVQ1 decoder
3
 * ported to MPlayer by Arpi <arpi@thot.banki.hu>
4
 * ported to libavcodec by Nick Kurshev <nickols_k@mail.ru>
5
 *
6
 * Copyright (C) 2002 the xine project
7
 * Copyright (C) 2002 the ffmpeg project
8
 *
9
 * SVQ1 Encoder (c) 2004 Mike Melanson <melanson@pcisys.net>
10
 *
11
 * This file is part of Libav.
12
 *
13
 * Libav is free software; you can redistribute it and/or
14
 * modify it under the terms of the GNU Lesser General Public
15
 * License as published by the Free Software Foundation; either
16
 * version 2.1 of the License, or (at your option) any later version.
17
 *
18
 * Libav is distributed in the hope that it will be useful,
19
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
20
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
21
 * Lesser General Public License for more details.
22
 *
23
 * You should have received a copy of the GNU Lesser General Public
24
 * License along with Libav; if not, write to the Free Software
25
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
26
 */
27

    
28
/**
29
 * @file
30
 * Sorenson Vector Quantizer #1 (SVQ1) video codec.
31
 * For more information of the SVQ1 algorithm, visit:
32
 *   http://www.pcisys.net/~melanson/codecs/
33
 */
34

    
35
#ifndef AVCODEC_SVQ1_H
36
#define AVCODEC_SVQ1_H
37

    
38
#include <stdint.h>
39

    
40
#define SVQ1_BLOCK_SKIP         0
41
#define SVQ1_BLOCK_INTER        1
42
#define SVQ1_BLOCK_INTER_4V     2
43
#define SVQ1_BLOCK_INTRA        3
44

    
45
struct svq1_frame_size {
46
    uint16_t width;
47
    uint16_t height;
48
};
49

    
50
uint16_t ff_svq1_packet_checksum (const uint8_t *data, const int length,
51
                                  int value);
52

    
53
extern const int8_t* const ff_svq1_inter_codebooks[6];
54
extern const int8_t* const ff_svq1_intra_codebooks[6];
55

    
56
extern const uint8_t ff_svq1_block_type_vlc[4][2];
57
extern const uint8_t ff_svq1_intra_multistage_vlc[6][8][2];
58
extern const uint8_t ff_svq1_inter_multistage_vlc[6][8][2];
59
extern const uint16_t ff_svq1_intra_mean_vlc[256][2];
60
extern const uint16_t ff_svq1_inter_mean_vlc[512][2];
61

    
62
extern const struct svq1_frame_size ff_svq1_frame_size_table[7];
63

    
64
#endif /* AVCODEC_SVQ1_H */