diff options
Diffstat (limited to 'libavcodec/h261data.h')
| -rw-r--r-- | libavcodec/h261data.h | 146 |
1 files changed, 12 insertions, 134 deletions
diff --git a/libavcodec/h261data.h b/libavcodec/h261data.h index 2c610151c7..e9e5244d15 100644 --- a/libavcodec/h261data.h +++ b/libavcodec/h261data.h @@ -2,20 +2,20 @@ * copyright (c) 2002-2004 Michael Niedermayer <michaelni@gmx.at> * copyright (c) 2004 Maarten Daniels * - * This file is part of Libav. + * This file is part of FFmpeg. * - * Libav is free software; you can redistribute it and/or + * 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. * - * Libav is distributed in the hope that it will be useful, + * 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 Libav; if not, write to the Free Software + * License along with FFmpeg; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ @@ -30,135 +30,13 @@ #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, -}; +extern const uint8_t ff_h261_mba_code[35]; +extern const uint8_t ff_h261_mba_bits[35]; +extern const uint8_t ff_h261_mtype_code[10]; +extern const uint8_t ff_h261_mtype_bits[10]; +extern const int ff_h261_mtype_map[10]; +extern const uint8_t ff_h261_mv_tab[17][2]; +extern const uint8_t ff_h261_cbp_tab[63][2]; +extern RLTable ff_h261_rl_tcoeff; #endif /* AVCODEC_H261DATA_H */ |