3 * ported to MPlayer by Arpi <arpi@thot.banki.hu>
4 * ported to libavcodec by Nick Kurshev <nickols_k@mail.ru>
6 * Copyright (C) 2002 the xine project
7 * Copyright (C) 2002 the ffmpeg project
9 * SVQ1 Encoder (c) 2004 Mike Melanson <melanson@pcisys.net>
11 * This file is part of Libav.
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.
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.
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
30 * Sorenson Vector Quantizer #1 (SVQ1) video codec.
31 * For more information of the SVQ1 algorithm, visit:
32 * http://www.pcisys.net/~melanson/codecs/
35 #ifndef AVCODEC_SVQ1_H
36 #define AVCODEC_SVQ1_H
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
45 struct svq1_frame_size {
50 uint16_t ff_svq1_packet_checksum (const uint8_t *data, const int length,
53 extern const int8_t* const ff_svq1_inter_codebooks[6];
54 extern const int8_t* const ff_svq1_intra_codebooks[6];
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];
62 extern const struct svq1_frame_size ff_svq1_frame_size_table[7];
64 #endif /* AVCODEC_SVQ1_H */