FFmpeg/libavcodec/speedhq.c

/*
 * NewTek SpeedHQ common data
 * Copyright 2017 Steinar H. Gunderson
 *
 * This file is part of FFmpeg.
 *
 * FFmpeg is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 *
 * FFmpeg is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with FFmpeg; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
 */

#include <stdint.h>
#include "speedhq.h"

/* AC codes: Very similar but not identical to MPEG-2. */
const uint16_t ff_speedhq_vlc_table[SPEEDHQ_RL_NB_ELEMS + 2][2] = {
    {0x0001,  2}, {0x0003,  3}, {0x000E,  4}, {0x0007,  5},
    {0x0017,  5}, {0x0028,  6}, {0x0008,  6}, {0x006F,  7},
    {0x001F,  7}, {0x00C4,  8}, {0x0044,  8}, {0x005F,  8},
    {0x00DF,  8}, {0x007F,  8}, {0x00FF,  8}, {0x3E00, 14},
    {0x1E00, 14}, {0x2E00, 14}, {0x0E00, 14}, {0x3600, 14},
    {0x1600, 14}, {0x2600, 14}, {0x0600, 14}, {0x3A00, 14},
    {0x1A00, 14}, {0x2A00, 14}, {0x0A00, 14}, {0x3200, 14},
    {0x1200, 14}, {0x2200, 14}, {0x0200, 14}, {0x0C00, 15},
    {0x7400, 15}, {0x3400, 15}, {0x5400, 15}, {0x1400, 15},
    {0x6400, 15}, {0x2400, 15}, {0x4400, 15}, {0x0400, 15},
    {0x0002,  3}, {0x000C,  5}, {0x004F,  7}, {0x00E4,  8},
    {0x0004,  8}, {0x0D00, 13}, {0x1500, 13}, {0x7C00, 15},
    {0x3C00, 15}, {0x5C00, 15}, {0x1C00, 15}, {0x6C00, 15},
    {0x2C00, 15}, {0x4C00, 15}, {0xC800, 16}, {0x4800, 16},
    {0x8800, 16}, {0x0800, 16}, {0x0300, 13}, {0x1D00, 13},
    {0x0014,  5}, {0x0070,  7}, {0x003F,  8}, {0x00C0, 10},
    {0x0500, 13}, {0x0180, 12}, {0x0280, 12}, {0x0C80, 12},
    {0x0080, 12}, {0x0B00, 13}, {0x1300, 13}, {0x001C,  5},
    {0x0064,  8}, {0x0380, 12}, {0x1900, 13}, {0x0D80, 12},
    {0x0018,  6}, {0x00BF,  8}, {0x0480, 12}, {0x0B80, 12},
    {0x0038,  6}, {0x0040,  9}, {0x0900, 13}, {0x0030,  7},
    {0x0780, 12}, {0x2800, 16}, {0x0010,  7}, {0x0A80, 12},
    {0x0050,  7}, {0x0880, 12}, {0x000F,  7}, {0x1100, 13},
    {0x002F,  7}, {0x0100, 13}, {0x0084,  8}, {0x5800, 16},
    {0x00A4,  8}, {0x9800, 16}, {0x0024,  8}, {0x1800, 16},
    {0x0140,  9}, {0xE800, 16}, {0x01C0,  9}, {0x6800, 16},
    {0x02C0, 10}, {0xA800, 16}, {0x0F80, 12}, {0x0580, 12},
    {0x0980, 12}, {0x0E80, 12}, {0x0680, 12}, {0x1F00, 13},
    {0x0F00, 13}, {0x1700, 13}, {0x0700, 13}, {0x1B00, 13},
    {0xF800, 16}, {0x7800, 16}, {0xB800, 16}, {0x3800, 16},
    {0xD800, 16},
    {0x0020,  6}, /* escape */
    {0x0006,  4}  /* EOB */
};

const uint8_t ff_speedhq_level[121] = {
     1,  2,  3,  4,  5,  6,  7,  8,
     9, 10, 11, 12, 13, 14, 15, 16,
    17, 18, 19, 20, 21, 22, 23, 24,
    25, 26, 27, 28, 29, 30, 31, 32,
    33, 34, 35, 36, 37, 38, 39, 40,
     1,  2,  3,  4,  5,  6,  7,  8,
     9, 10, 11, 12, 13, 14, 15, 16,
    17, 18, 19, 20,  1,  2,  3,  4,
     5,  6,  7,  8,  9, 10, 11,  1,
     2,  3,  4,  5,  1,  2,  3,  4,
     1,  2,  3,  1,  2,  3,  1,  2,
     1,  2,  1,  2,  1,  2,  1,  2,
     1,  2,  1,  2,  1,  2,  1,  2,
     1,  2,  1,  1,  1,  1,  1,  1,
     1,  1,  1,  1,  1,  1,  1,  1,
     1,
};

const uint8_t ff_speedhq_run[121] = {
     0,  0,  0,  0,  0,  0,  0,  0,
     0,  0,  0,  0,  0,  0,  0,  0,
     0,  0,  0,  0,  0,  0,  0,  0,
     0,  0,  0,  0,  0,  0,  0,  0,
     0,  0,  0,  0,  0,  0,  0,  0,
     1,  1,  1,  1,  1,  1,  1,  1,
     1,  1,  1,  1,  1,  1,  1,  1,
     1,  1,  1,  1,  2,  2,  2,  2,
     2,  2,  2,  2,  2,  2,  2,  3,
     3,  3,  3,  3,  4,  4,  4,  4,
     5,  5,  5,  6,  6,  6,  7,  7,
     8,  8,  9,  9, 10, 10, 11, 11,
    12, 12, 13, 13, 14, 14, 15, 15,
    16, 16, 17, 18, 19, 20, 21, 22,
    23, 24, 25, 26, 27, 28, 29, 30,
    31,
};