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https://github.com/FFmpeg/FFmpeg.git
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5735f768b0
Currently they end up twice in the binary, since both encoder and decoder include the header and thus each gets their own copy. This is clearly nonsense for the const tables, but shouldn't be necessary for the RLTable either. Signed-off-by: Reimar Döffinger <Reimar.Doeffinger@gmx.de>
156 lines
5.0 KiB
C
156 lines
5.0 KiB
C
/*
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* copyright (c) 2002-2004 Michael Niedermayer <michaelni@gmx.at>
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* copyright (c) 2004 Maarten Daniels
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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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/**
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* @file
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* H.261 tables.
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*/
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#include <stdint.h>
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#include "h261.h"
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#include "h261data.h"
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// H.261 VLC table for macroblock addressing
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const uint8_t ff_h261_mba_code[35] = {
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1, 3, 2, 3,
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2, 3, 2, 7,
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6, 11, 10, 9,
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8, 7, 6, 23,
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22, 21, 20, 19,
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18, 35, 34, 33,
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32, 31, 30, 29,
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28, 27, 26, 25,
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24,
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15, //(MBA stuffing)
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1 //(start code)
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};
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const uint8_t ff_h261_mba_bits[35] = {
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1, 3, 3, 4,
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4, 5, 5, 7,
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7, 8, 8, 8,
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8, 8, 8, 10,
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10, 10, 10, 10,
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10, 11, 11, 11,
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11, 11, 11, 11,
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11, 11, 11, 11,
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11,
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11, //(MBA stuffing)
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16 //(start code)
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};
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//H.261 VLC table for macroblock type
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const uint8_t ff_h261_mtype_code[10] = {
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1, 1, 1, 1,
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1, 1, 1, 1,
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1, 1
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};
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const uint8_t ff_h261_mtype_bits[10] = {
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4, 7, 1, 5,
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9, 8, 10, 3,
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2, 6
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};
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const int ff_h261_mtype_map[10]= {
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MB_TYPE_INTRA4x4,
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MB_TYPE_INTRA4x4 | MB_TYPE_QUANT,
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MB_TYPE_CBP,
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MB_TYPE_QUANT | MB_TYPE_CBP,
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MB_TYPE_16x16,
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MB_TYPE_CBP | MB_TYPE_16x16,
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MB_TYPE_QUANT | MB_TYPE_CBP | MB_TYPE_16x16,
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MB_TYPE_16x16 | MB_TYPE_H261_FIL,
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MB_TYPE_CBP | MB_TYPE_16x16 | MB_TYPE_H261_FIL,
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MB_TYPE_QUANT | MB_TYPE_CBP | MB_TYPE_16x16 | MB_TYPE_H261_FIL
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};
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//H.261 VLC table for motion vectors
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const uint8_t ff_h261_mv_tab[17][2] = {
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{1,1}, {1,2}, {1,3}, {1,4}, {3,6}, {5,7}, {4,7}, {3,7},
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{11,9}, {10,9}, {9,9}, {17,10}, {16,10}, {15,10}, {14,10}, {13,10}, {12,10}
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};
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//H.261 VLC table for coded block pattern
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const uint8_t ff_h261_cbp_tab[63][2] =
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{
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{11,5}, {9,5}, {13,6}, {13,4}, {23,7}, {19,7}, {31,8}, {12,4},
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{22,7}, {18,7}, {30,8}, {19,5}, {27,8}, {23,8}, {19,8}, {11,4},
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{21,7}, {17,7}, {29,8}, {17,5}, {25,8}, {21,8}, {17,8}, {15,6},
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{15,8}, {13,8}, {3,9}, {15,5}, {11,8}, {7,8}, {7,9}, {10,4},
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{20,7}, {16,7}, {28,8}, {14,6}, {14,8}, {12,8}, {2,9}, {16,5},
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{24,8}, {20,8}, {16,8}, {14,5}, {10,8}, {6,8}, {6,9}, {18,5},
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{26,8}, {22,8}, {18,8}, {13,5}, {9,8}, {5,8}, {5,9}, {12,5},
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{8,8}, {4,8}, {4,9}, {7,3}, {10,5}, {8,5}, {12,6}
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};
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//H.261 VLC table for transform coefficients
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static const uint16_t h261_tcoeff_vlc[65][2] = {
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{ 0x2, 2 }, { 0x3, 2 },{ 0x4, 4 },{ 0x5, 5 },
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{ 0x6, 7 },{ 0x26, 8 },{ 0x21, 8 },{ 0xa, 10 },
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{ 0x1d, 12 },{ 0x18, 12 },{ 0x13, 12 },{ 0x10 , 12 },
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{ 0x1a, 13},{ 0x19, 13 }, { 0x18, 13 }, { 0x17, 13 },
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{ 0x3, 3 }, { 0x6, 6 }, { 0x25 , 8 }, { 0xc, 10 },
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{ 0x1b, 12 }, { 0x16, 13 }, { 0x15, 13 }, { 0x5, 4},
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{ 0x4, 7}, { 0xb, 10 }, { 0x14, 12 }, { 0x14, 13 },
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{ 0x7, 5 }, { 0x24, 8 }, { 0x1c, 12 }, { 0x13, 13 },
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{ 0x6, 5 }, { 0xf, 10 }, { 0x12, 12}, { 0x7, 6},
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{ 0x9 , 10 }, { 0x12, 13 }, { 0x5, 6 }, { 0x1e, 12 },
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{ 0x4, 6 }, { 0x15, 12 }, { 0x7, 7 }, { 0x11, 12},
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{ 0x5, 7 }, { 0x11, 13 }, { 0x27, 8 }, { 0x10, 13 },
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{ 0x23, 8 }, { 0x22, 8 }, { 0x20, 8 }, { 0xe , 10 },
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{ 0xd, 10 }, { 0x8, 10 },{ 0x1f, 12 }, { 0x1a, 12 },
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{ 0x19, 12 }, { 0x17, 12 }, { 0x16, 12}, { 0x1f, 13},
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{ 0x1e, 13 }, { 0x1d, 13 }, { 0x1c, 13}, { 0x1b, 13},
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{ 0x1, 6 } //escape
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};
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static const int8_t h261_tcoeff_level[64] = {
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0, 1, 2, 3, 4, 5, 6, 7,
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8, 9, 10, 11, 12, 13, 14, 15,
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1, 2, 3, 4, 5, 6, 7, 1,
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2, 3, 4, 5, 1, 2, 3, 4,
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1, 2, 3, 1, 2, 3, 1, 2,
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1, 2, 1, 2, 1, 2, 1, 2,
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1, 1, 1, 1, 1, 1, 1, 1,
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1, 1, 1, 1, 1, 1, 1, 1
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};
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static const int8_t h261_tcoeff_run[64] = {
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0,
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0, 0, 0, 0, 0, 0, 0, 0,
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0, 0, 0, 0, 0, 0, 0, 1,
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1, 1, 1, 1, 1, 1, 2, 2,
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2, 2, 2, 3, 3, 3, 3, 4,
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4, 4, 5, 5, 5, 6, 6, 7,
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7, 8, 8, 9, 9, 10, 10, 11,
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12, 13, 14, 15, 16, 17, 18, 19,
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20, 21, 22, 23, 24, 25, 26
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};
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RLTable ff_h261_rl_tcoeff = {
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64,
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64,
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h261_tcoeff_vlc,
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h261_tcoeff_run,
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h261_tcoeff_level,
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};
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