| /* |
| * copyright (c) 2002-2004 Michael Niedermayer <michaelni@gmx.at> |
| * copyright (c) 2004 Maarten Daniels |
| * |
| * 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 |
| */ |
| |
| /** |
| * @file libavcodec/h261data.h |
| * H.261 tables. |
| */ |
| |
| #ifndef AVCODEC_H261DATA_H |
| #define AVCODEC_H261DATA_H |
| |
| #include <stdint.h> |
| #include "h261.h" |
| |
| // H.261 VLC table for macroblock addressing |
| static const uint8_t h261_mba_code[35] = { |
| 1, 3, 2, 3, |
| 2, 3, 2, 7, |
| 6, 11, 10, 9, |
| 8, 7, 6, 23, |
| 22, 21, 20, 19, |
| 18, 35, 34, 33, |
| 32, 31, 30, 29, |
| 28, 27, 26, 25, |
| 24, |
| 15, //(MBA stuffing) |
| 1 //(start code) |
| }; |
| |
| static const uint8_t h261_mba_bits[35] = { |
| 1, 3, 3, 4, |
| 4, 5, 5, 7, |
| 7, 8, 8, 8, |
| 8, 8, 8, 10, |
| 10, 10, 10, 10, |
| 10, 11, 11, 11, |
| 11, 11, 11, 11, |
| 11, 11, 11, 11, |
| 11, |
| 11, //(MBA stuffing) |
| 16 //(start code) |
| }; |
| |
| //H.261 VLC table for macroblock type |
| static const uint8_t h261_mtype_code[10] = { |
| 1, 1, 1, 1, |
| 1, 1, 1, 1, |
| 1, 1 |
| }; |
| |
| static const uint8_t h261_mtype_bits[10] = { |
| 4, 7, 1, 5, |
| 9, 8, 10, 3, |
| 2, 6 |
| }; |
| |
| static const int h261_mtype_map[10]= { |
| MB_TYPE_INTRA4x4, |
| MB_TYPE_INTRA4x4 | MB_TYPE_QUANT, |
| MB_TYPE_CBP, |
| MB_TYPE_QUANT | MB_TYPE_CBP, |
| MB_TYPE_16x16, |
| MB_TYPE_CBP | MB_TYPE_16x16, |
| MB_TYPE_QUANT | MB_TYPE_CBP | MB_TYPE_16x16, |
| MB_TYPE_16x16 | MB_TYPE_H261_FIL, |
| MB_TYPE_CBP | MB_TYPE_16x16 | MB_TYPE_H261_FIL, |
| MB_TYPE_QUANT | MB_TYPE_CBP | MB_TYPE_16x16 | MB_TYPE_H261_FIL |
| }; |
| |
| //H.261 VLC table for motion vectors |
| static const uint8_t h261_mv_tab[17][2] = { |
| {1,1}, {1,2}, {1,3}, {1,4}, {3,6}, {5,7}, {4,7}, {3,7}, |
| {11,9}, {10,9}, {9,9}, {17,10}, {16,10}, {15,10}, {14,10}, {13,10}, {12,10} |
| }; |
| |
| static const int mvmap[17] = |
| { |
| 0, -1, -2, -3, -4, -5, -6, -7, -8, -9, -10, -11, -12, -13, -14, -15, -16 |
| }; |
| |
| //H.261 VLC table for coded block pattern |
| static const uint8_t h261_cbp_tab[63][2] = |
| { |
| {11,5}, {9,5}, {13,6}, {13,4}, {23,7}, {19,7}, {31,8}, {12,4}, |
| {22,7}, {18,7}, {30,8}, {19,5}, {27,8}, {23,8}, {19,8}, {11,4}, |
| {21,7}, {17,7}, {29,8}, {17,5}, {25,8}, {21,8}, {17,8}, {15,6}, |
| {15,8}, {13,8}, {3,9}, {15,5}, {11,8}, {7,8}, {7,9}, {10,4}, |
| {20,7}, {16,7}, {28,8}, {14,6}, {14,8}, {12,8}, {2,9}, {16,5}, |
| {24,8}, {20,8}, {16,8}, {14,5}, {10,8}, {6,8}, {6,9}, {18,5}, |
| {26,8}, {22,8}, {18,8}, {13,5}, {9,8}, {5,8}, {5,9}, {12,5}, |
| {8,8}, {4,8}, {4,9}, {7,3}, {10,5}, {8,5}, {12,6} |
| }; |
| |
| //H.261 VLC table for transform coefficients |
| static const uint16_t h261_tcoeff_vlc[65][2] = { |
| { 0x2, 2 }, { 0x3, 2 },{ 0x4, 4 },{ 0x5, 5 }, |
| { 0x6, 7 },{ 0x26, 8 },{ 0x21, 8 },{ 0xa, 10 }, |
| { 0x1d, 12 },{ 0x18, 12 },{ 0x13, 12 },{ 0x10 , 12 }, |
| { 0x1a, 13},{ 0x19, 13 }, { 0x18, 13 }, { 0x17, 13 }, |
| { 0x3, 3 }, { 0x6, 6 }, { 0x25 , 8 }, { 0xc, 10 }, |
| { 0x1b, 12 }, { 0x16, 13 }, { 0x15, 13 }, { 0x5, 4}, |
| { 0x4, 7}, { 0xb, 10 }, { 0x14, 12 }, { 0x14, 13 }, |
| { 0x7, 5 }, { 0x24, 8 }, { 0x1c, 12 }, { 0x13, 13 }, |
| { 0x6, 5 }, { 0xf, 10 }, { 0x12, 12}, { 0x7, 6}, |
| { 0x9 , 10 }, { 0x12, 13 }, { 0x5, 6 }, { 0x1e, 12 }, |
| { 0x4, 6 }, { 0x15, 12 }, { 0x7, 7 }, { 0x11, 12}, |
| { 0x5, 7 }, { 0x11, 13 }, { 0x27, 8 }, { 0x10, 13 }, |
| { 0x23, 8 }, { 0x22, 8 }, { 0x20, 8 }, { 0xe , 10 }, |
| { 0xd, 10 }, { 0x8, 10 },{ 0x1f, 12 }, { 0x1a, 12 }, |
| { 0x19, 12 }, { 0x17, 12 }, { 0x16, 12}, { 0x1f, 13}, |
| { 0x1e, 13 }, { 0x1d, 13 }, { 0x1c, 13}, { 0x1b, 13}, |
| { 0x1, 6 } //escape |
| }; |
| |
| static const int8_t h261_tcoeff_level[64] = { |
| 0, 1, 2, 3, 4, 5, 6, 7, |
| 8, 9, 10, 11, 12, 13, 14, 15, |
| 1, 2, 3, 4, 5, 6, 7, 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, 1, 1, 1, 1, 1, 1, 1, |
| 1, 1, 1, 1, 1, 1, 1, 1 |
| }; |
| |
| static const int8_t h261_tcoeff_run[64] = { |
| 0, |
| 0, 0, 0, 0, 0, 0, 0, 0, |
| 0, 0, 0, 0, 0, 0, 0, 1, |
| 1, 1, 1, 1, 1, 1, 2, 2, |
| 2, 2, 2, 3, 3, 3, 3, 4, |
| 4, 4, 5, 5, 5, 6, 6, 7, |
| 7, 8, 8, 9, 9, 10, 10, 11, |
| 12, 13, 14, 15, 16, 17, 18, 19, |
| 20, 21, 22, 23, 24, 25, 26 |
| }; |
| |
| static RLTable h261_rl_tcoeff = { |
| 64, |
| 64, |
| h261_tcoeff_vlc, |
| h261_tcoeff_run, |
| h261_tcoeff_level, |
| }; |
| |
| #endif /* AVCODEC_H261DATA_H */ |
