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d3f35224a9
The SheerVideo decoder uses VLC tables which are currently stored in large arrays that contain the length of each leaf of the corresponding tree from left to right, taking 15.5KB of space. But all these arrays follow a common pattern: First the entries are ascending and then they are descending with lots of successive entries have the same value. Therefore it makes sense to use a run-length encoding to store them, as this commit does. Notice that the length 16 has to be treated specially because there are arrays with more than 256 consecutive entries with value 16 and because the length of the entries start to descend from this length onward. Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@gmail.com>
163 lines
5.6 KiB
C
163 lines
5.6 KiB
C
/*
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* BitJazz SheerVideo decoder
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* Copyright (c) 2016 Paul B Mahol
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*
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* This file is part of FFmpeg.
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*
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* FFmpeg is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* FFmpeg is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with FFmpeg; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#ifndef AVCODEC_SHEERVIDEODATA_H
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#define AVCODEC_SHEERVIDEODATA_H
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#include "libavutil/common.h"
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typedef struct SheerTable {
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uint8_t lens[2 * 15];
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uint16_t nb_16s;
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} SheerTable;
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static const SheerTable l_r_rgb = {
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{ 0, 0, 2, 2, 3, 3, 5, 5, 8, 8, 10, 9, 14, 15, 18,
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17, 16, 13, 10, 10, 8, 7, 6, 5, 3, 2, 3, 0, 0, 0 }, 54
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};
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static const SheerTable l_g_rgb = {
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{ 0, 2, 0, 2, 0, 1, 1, 0, 2, 1, 3, 3, 4, 7, 13,
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11, 8, 4, 3, 3, 1, 2, 1, 0, 1, 0, 1, 2, 0, 0 }, 180
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};
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static const SheerTable l_r_rgbi = {
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{ 0, 0, 1, 3, 3, 3, 6, 8, 8, 11, 12, 15, 18, 21, 38,
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0, 22, 19, 15, 12, 11, 7, 8, 6, 4, 2, 3, 0, 0, 0 }, 0
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};
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static const SheerTable l_g_rgbi = {
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{ 1, 0, 1, 1, 1, 1, 2, 1, 2, 4, 3, 5, 5, 6, 12,
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14, 6, 6, 5, 3, 3, 3, 2, 1, 1, 2, 0, 1, 0, 0 }, 164
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};
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static const SheerTable l_y_ybr = {
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{ 0, 0, 2, 2, 2, 3, 5, 5, 7, 7, 8, 9, 13, 13, 19,
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16, 14, 12, 9, 9, 7, 6, 6, 4, 4, 1, 2, 1, 0, 0 }, 70
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};
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static const SheerTable l_u_ybr = {
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{ 1, 1, 0, 1, 0, 1, 0, 0, 1, 1, 2, 2, 3, 5, 5,
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5, 5, 3, 2, 2, 1, 0, 1, 0, 0, 1, 0, 1, 0, 0 }, 212
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};
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static const SheerTable l_y_ybyr = {
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{ 0, 0, 2, 2, 3, 3, 5, 5, 8, 8, 10, 10, 13, 15, 19,
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18, 15, 12, 10, 10, 8, 7, 6, 5, 3, 2, 3, 0, 0, 0 }, 54
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};
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static const SheerTable l_u_ybyr = {
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{ 1, 1, 0, 1, 0, 1, 0, 1, 1, 2, 2, 3, 2, 5, 5,
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5, 4, 3, 2, 2, 2, 1, 1, 1, 1, 0, 0, 1, 0, 0 }, 208
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};
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static const SheerTable l_y_byry = {
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{ 0, 0, 2, 2, 2, 3, 5, 5, 7, 7, 8, 11, 10, 14, 19,
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14, 16, 12, 10, 8, 7, 6, 6, 4, 4, 1, 2, 1, 0, 0 }, 70
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};
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static const SheerTable l_u_byry = {
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{ 1, 1, 0, 1, 0, 1, 0, 1, 2, 1, 2, 2, 3, 4, 6,
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6, 4, 2, 3, 2, 1, 1, 1, 1, 1, 0, 0, 1, 0, 0 }, 208
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};
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static const SheerTable l_y_ybr10i = {
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{ 0, 0, 1, 0, 3, 8, 9, 12, 19, 27, 27, 39, 50, 63, 93,
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89, 64, 50, 38, 26, 26, 20, 12, 9, 8, 3, 0, 0, 0, 0 }, 328
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};
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static const SheerTable l_u_ybr10i = {
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{ 0, 1, 1, 2, 2, 1, 2, 2, 4, 4, 6, 7, 9, 13, 28,
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28, 12, 11, 6, 7, 5, 3, 3, 1, 1, 2, 2, 1, 0, 0 }, 860
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};
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static const SheerTable l_y_ybr10 = {
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{ 0, 0, 0, 1, 6, 6, 8, 12, 18, 21, 27, 29, 36, 47, 71,
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72, 46, 36, 29, 27, 21, 17, 13, 7, 7, 5, 0, 0, 0, 0 }, 462
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};
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static const SheerTable l_u_ybr10 = {
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{ 0, 1, 2, 1, 2, 1, 1, 1, 2, 3, 2, 5, 6, 10, 20,
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20, 10, 6, 4, 3, 2, 2, 2, 1, 1, 1, 2, 1, 0, 0 }, 912
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};
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static const SheerTable l_r_rgbx = {
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{ 0, 0, 0, 1, 3, 9, 10, 13, 19, 26, 28, 35, 40, 53, 77,
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77, 50, 42, 34, 28, 25, 19, 13, 10, 8, 4, 0, 0, 0, 0 }, 400
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};
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static const SheerTable l_g_rgbx = {
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{ 0, 0, 1, 2, 6, 4, 3, 2, 3, 4, 6, 8, 10, 18, 39,
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39, 18, 11, 8, 6, 4, 4, 1, 3, 5, 4, 3, 0, 0, 0 }, 812
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};
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static const SheerTable l_y_yry10 = {
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{ 0, 0, 0, 1, 6, 6, 8, 12, 18, 21, 27, 29, 36, 47, 71,
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72, 46, 36, 29, 27, 21, 17, 13, 7, 7, 5, 0, 0, 0, 0 }, 462
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};
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static const SheerTable l_u_yry10 = {
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{ 0, 1, 2, 1, 1, 1, 2, 3, 2, 4, 5, 5, 8, 14, 16,
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18, 11, 7, 7, 4, 4, 3, 2, 2, 1, 1, 2, 1, 0, 0 }, 896
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};
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static const SheerTable l_y_yry10i = {
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{ 0, 0, 1, 0, 3, 8, 9, 12, 19, 27, 27, 40, 48, 64, 93,
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89, 65, 49, 38, 26, 26, 20, 12, 9, 8, 3, 0, 0, 0, 0 }, 328
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};
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static const SheerTable l_u_yry10i = {
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{ 0, 1, 0, 3, 1, 3, 3, 3, 6, 7, 7, 12, 11, 19, 23,
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20, 18, 12, 12, 8, 6, 5, 4, 3, 2, 2, 2, 1, 0, 0 }, 830
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};
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static const SheerTable l_y_ybri = {
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{ 0, 0, 2, 2, 2, 3, 5, 5, 7, 10, 11, 13, 15, 13, 26,
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20, 16, 17, 12, 11, 9, 7, 5, 5, 3, 3, 1, 1, 0, 0 }, 32
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};
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static const SheerTable l_u_ybri = {
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{ 1, 0, 1, 0, 1, 1, 0, 2, 1, 2, 2, 2, 3, 6, 6,
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5, 6, 3, 2, 2, 2, 1, 2, 0, 1, 1, 0, 0, 1, 0 }, 202
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};
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static const SheerTable l_y_byryi = {
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{ 0, 0, 2, 2, 2, 2, 6, 5, 8, 8, 12, 12, 16, 14, 24,
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20, 16, 18, 12, 12, 8, 7, 5, 6, 3, 1, 2, 1, 0, 0 }, 32
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};
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static const SheerTable l_u_byryi = {
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{ 1, 0, 1, 1, 0, 2, 1, 2, 2, 3, 3, 4, 5, 4, 6,
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7, 5, 4, 4, 3, 3, 2, 2, 2, 0, 1, 1, 1, 0, 0 }, 186
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};
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static const SheerTable l_r_rgbxi = {
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{ 0, 0, 1, 3, 2, 3, 4, 6, 16, 23, 27, 29, 24, 29, 76,
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78, 29, 21, 29, 27, 23, 15, 7, 4, 3, 2, 3, 0, 0, 0 }, 540
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};
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static const SheerTable l_g_rgbxi = {
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{ 0, 1, 1, 2, 0, 2, 6, 4, 3, 9, 7, 12, 13, 16, 29,
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32, 17, 14, 12, 7, 8, 4, 4, 6, 2, 0, 2, 1, 0, 0 }, 810
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};
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#endif /* AVCODEC_SHEERVIDEODATA_H */
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