libavcodec/svq1.h

   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 libavcodec/svq1.h
  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     int width;
  47     int 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[8];
  63
  64 #endif /* AVCODEC_SVQ1_H */