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2ba45a60 DM |
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 | ||
45 | uint16_t ff_svq1_packet_checksum(const uint8_t *data, | |
46 | const int length, int value); | |
47 | ||
48 | extern const int8_t *const ff_svq1_inter_codebooks[6]; | |
49 | extern const int8_t *const ff_svq1_intra_codebooks[6]; | |
50 | ||
51 | extern const uint8_t ff_svq1_block_type_vlc[4][2]; | |
52 | extern const uint8_t ff_svq1_intra_multistage_vlc[6][8][2]; | |
53 | extern const uint8_t ff_svq1_inter_multistage_vlc[6][8][2]; | |
54 | extern const uint16_t ff_svq1_intra_mean_vlc[256][2]; | |
55 | extern const uint16_t ff_svq1_inter_mean_vlc[512][2]; | |
56 | ||
57 | extern const uint16_t ff_svq1_frame_size_table[7][2]; | |
58 | ||
59 | #endif /* AVCODEC_SVQ1_H */ |