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 FFmpeg.
12 *
13 * FFmpeg 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 * FFmpeg 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 FFmpeg; 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
45struct svq1_frame_size {
46    uint16_t width;
47    uint16_t height;
48};
49
50uint16_t ff_svq1_packet_checksum (const uint8_t *data, const int length,
51                                  int value);
52
53extern const int8_t* const ff_svq1_inter_codebooks[6];
54extern const int8_t* const ff_svq1_intra_codebooks[6];
55
56extern const uint8_t ff_svq1_block_type_vlc[4][2];
57extern const uint8_t ff_svq1_intra_multistage_vlc[6][8][2];
58extern const uint8_t ff_svq1_inter_multistage_vlc[6][8][2];
59extern const uint16_t ff_svq1_intra_mean_vlc[256][2];
60extern const uint16_t ff_svq1_inter_mean_vlc[512][2];
61
62extern const struct svq1_frame_size ff_svq1_frame_size_table[7];
63
64#endif /* AVCODEC_SVQ1_H */
65