diff options
Diffstat (limited to 'contrib/ffmpeg/libavcodec/mpeg4data.h')
-rw-r--r-- | contrib/ffmpeg/libavcodec/mpeg4data.h | 423 |
1 files changed, 423 insertions, 0 deletions
diff --git a/contrib/ffmpeg/libavcodec/mpeg4data.h b/contrib/ffmpeg/libavcodec/mpeg4data.h new file mode 100644 index 000000000..e199c6a14 --- /dev/null +++ b/contrib/ffmpeg/libavcodec/mpeg4data.h @@ -0,0 +1,423 @@ +/* + * copyright (c) 2000,2001 Fabrice Bellard + * H263+ support + * copyright (c) 2002-2004 Michael Niedermayer <michaelni@gmx.at> + * + * 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 mpeg4data.h + * mpeg4 tables. + */ + +// shapes +#define RECT_SHAPE 0 +#define BIN_SHAPE 1 +#define BIN_ONLY_SHAPE 2 +#define GRAY_SHAPE 3 + +#define SIMPLE_VO_TYPE 1 +#define CORE_VO_TYPE 3 +#define MAIN_VO_TYPE 4 +#define NBIT_VO_TYPE 5 +#define ARTS_VO_TYPE 10 +#define ACE_VO_TYPE 12 +#define ADV_SIMPLE_VO_TYPE 17 + +// aspect_ratio_info +#define EXTENDED_PAR 15 + +//vol_sprite_usage / sprite_enable +#define STATIC_SPRITE 1 +#define GMC_SPRITE 2 + +#define MOTION_MARKER 0x1F001 +#define DC_MARKER 0x6B001 + +static const int mb_type_b_map[4]= { + MB_TYPE_DIRECT2 | MB_TYPE_L0L1, + MB_TYPE_L0L1 | MB_TYPE_16x16, + MB_TYPE_L1 | MB_TYPE_16x16, + MB_TYPE_L0 | MB_TYPE_16x16, +}; + +#define VOS_STARTCODE 0x1B0 +#define USER_DATA_STARTCODE 0x1B2 +#define GOP_STARTCODE 0x1B3 +#define VISUAL_OBJ_STARTCODE 0x1B5 +#define VOP_STARTCODE 0x1B6 + +/* dc encoding for mpeg4 */ +const uint8_t DCtab_lum[13][2] = +{ + {3,3}, {3,2}, {2,2}, {2,3}, {1,3}, {1,4}, {1,5}, {1,6}, {1,7}, + {1,8}, {1,9}, {1,10}, {1,11}, +}; + +const uint8_t DCtab_chrom[13][2] = +{ + {3,2}, {2,2}, {1,2}, {1,3}, {1,4}, {1,5}, {1,6}, {1,7}, {1,8}, + {1,9}, {1,10}, {1,11}, {1,12}, +}; + +const uint16_t intra_vlc[103][2] = { +{ 0x2, 2 }, +{ 0x6, 3 },{ 0xf, 4 },{ 0xd, 5 },{ 0xc, 5 }, +{ 0x15, 6 },{ 0x13, 6 },{ 0x12, 6 },{ 0x17, 7 }, +{ 0x1f, 8 },{ 0x1e, 8 },{ 0x1d, 8 },{ 0x25, 9 }, +{ 0x24, 9 },{ 0x23, 9 },{ 0x21, 9 },{ 0x21, 10 }, +{ 0x20, 10 },{ 0xf, 10 },{ 0xe, 10 },{ 0x7, 11 }, +{ 0x6, 11 },{ 0x20, 11 },{ 0x21, 11 },{ 0x50, 12 }, +{ 0x51, 12 },{ 0x52, 12 },{ 0xe, 4 },{ 0x14, 6 }, +{ 0x16, 7 },{ 0x1c, 8 },{ 0x20, 9 },{ 0x1f, 9 }, +{ 0xd, 10 },{ 0x22, 11 },{ 0x53, 12 },{ 0x55, 12 }, +{ 0xb, 5 },{ 0x15, 7 },{ 0x1e, 9 },{ 0xc, 10 }, +{ 0x56, 12 },{ 0x11, 6 },{ 0x1b, 8 },{ 0x1d, 9 }, +{ 0xb, 10 },{ 0x10, 6 },{ 0x22, 9 },{ 0xa, 10 }, +{ 0xd, 6 },{ 0x1c, 9 },{ 0x8, 10 },{ 0x12, 7 }, +{ 0x1b, 9 },{ 0x54, 12 },{ 0x14, 7 },{ 0x1a, 9 }, +{ 0x57, 12 },{ 0x19, 8 },{ 0x9, 10 },{ 0x18, 8 }, +{ 0x23, 11 },{ 0x17, 8 },{ 0x19, 9 },{ 0x18, 9 }, +{ 0x7, 10 },{ 0x58, 12 },{ 0x7, 4 },{ 0xc, 6 }, +{ 0x16, 8 },{ 0x17, 9 },{ 0x6, 10 },{ 0x5, 11 }, +{ 0x4, 11 },{ 0x59, 12 },{ 0xf, 6 },{ 0x16, 9 }, +{ 0x5, 10 },{ 0xe, 6 },{ 0x4, 10 },{ 0x11, 7 }, +{ 0x24, 11 },{ 0x10, 7 },{ 0x25, 11 },{ 0x13, 7 }, +{ 0x5a, 12 },{ 0x15, 8 },{ 0x5b, 12 },{ 0x14, 8 }, +{ 0x13, 8 },{ 0x1a, 8 },{ 0x15, 9 },{ 0x14, 9 }, +{ 0x13, 9 },{ 0x12, 9 },{ 0x11, 9 },{ 0x26, 11 }, +{ 0x27, 11 },{ 0x5c, 12 },{ 0x5d, 12 },{ 0x5e, 12 }, +{ 0x5f, 12 },{ 0x3, 7 }, +}; + +const int8_t intra_level[102] = { + 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, 1, 2, 3, 4, 5, + 6, 7, 8, 9, 10, 1, 2, 3, + 4, 5, 1, 2, 3, 4, 1, 2, + 3, 1, 2, 3, 1, 2, 3, 1, + 2, 3, 1, 2, 1, 2, 1, 1, + 1, 1, 1, 1, 2, 3, 4, 5, + 6, 7, 8, 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, +}; + +const int8_t intra_run[102] = { + 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, 2, 2, 2, + 2, 2, 3, 3, 3, 3, 4, 4, + 4, 5, 5, 5, 6, 6, 6, 7, + 7, 7, 8, 8, 9, 9, 10, 11, + 12, 13, 14, 0, 0, 0, 0, 0, + 0, 0, 0, 1, 1, 1, 2, 2, + 3, 3, 4, 4, 5, 5, 6, 6, + 7, 8, 9, 10, 11, 12, 13, 14, + 15, 16, 17, 18, 19, 20, +}; + +static RLTable rl_intra = { + 102, + 67, + intra_vlc, + intra_run, + intra_level, +}; + +static const uint16_t inter_rvlc[170][2]={ //note this is identical to the intra rvlc except that its reordered +{0x0006, 3},{0x0001, 4},{0x0004, 5},{0x001C, 7}, +{0x003C, 8},{0x003D, 8},{0x007C, 9},{0x00FC, 10}, +{0x00FD, 10},{0x01FC, 11},{0x01FD, 11},{0x03FC, 12}, +{0x07FC, 13},{0x07FD, 13},{0x0BFC, 13},{0x0BFD, 13}, +{0x0FFC, 14},{0x0FFD, 14},{0x1FFC, 15},{0x0007, 3}, +{0x000C, 6},{0x005C, 8},{0x007D, 9},{0x017C, 10}, +{0x02FC, 11},{0x03FD, 12},{0x0DFC, 13},{0x17FC, 14}, +{0x17FD, 14},{0x000A, 4},{0x001D, 7},{0x00BC, 9}, +{0x02FD, 11},{0x05FC, 12},{0x1BFC, 14},{0x1BFD, 14}, +{0x0005, 5},{0x005D, 8},{0x017D, 10},{0x05FD, 12}, +{0x0DFD, 13},{0x1DFC, 14},{0x1FFD, 15},{0x0008, 5}, +{0x006C, 8},{0x037C, 11},{0x0EFC, 13},{0x2FFC, 15}, +{0x0009, 5},{0x00BD, 9},{0x037D, 11},{0x0EFD, 13}, +{0x000D, 6},{0x01BC, 10},{0x06FC, 12},{0x1DFD, 14}, +{0x0014, 6},{0x01BD, 10},{0x06FD, 12},{0x2FFD, 15}, +{0x0015, 6},{0x01DC, 10},{0x0F7C, 13},{0x002C, 7}, +{0x01DD, 10},{0x1EFC, 14},{0x002D, 7},{0x03BC, 11}, +{0x0034, 7},{0x077C, 12},{0x006D, 8},{0x0F7D, 13}, +{0x0074, 8},{0x1EFD, 14},{0x0075, 8},{0x1F7C, 14}, +{0x00DC, 9},{0x1F7D, 14},{0x00DD, 9},{0x1FBC, 14}, +{0x00EC, 9},{0x37FC, 15},{0x01EC, 10},{0x01ED, 10}, +{0x01F4, 10},{0x03BD, 11},{0x03DC, 11},{0x03DD, 11}, +{0x03EC, 11},{0x03ED, 11},{0x03F4, 11},{0x077D, 12}, +{0x07BC, 12},{0x07BD, 12},{0x0FBC, 13},{0x0FBD, 13}, +{0x0FDC, 13},{0x0FDD, 13},{0x1FBD, 14},{0x1FDC, 14}, +{0x1FDD, 14},{0x37FD, 15},{0x3BFC, 15}, +{0x000B, 4},{0x0078, 8},{0x03F5, 11},{0x0FEC, 13}, +{0x1FEC, 14},{0x0012, 5},{0x00ED, 9},{0x07DC, 12}, +{0x1FED, 14},{0x3BFD, 15},{0x0013, 5},{0x03F8, 11}, +{0x3DFC, 15},{0x0018, 6},{0x07DD, 12},{0x0019, 6}, +{0x07EC, 12},{0x0022, 6},{0x0FED, 13},{0x0023, 6}, +{0x0FF4, 13},{0x0035, 7},{0x0FF5, 13},{0x0038, 7}, +{0x0FF8, 13},{0x0039, 7},{0x0FF9, 13},{0x0042, 7}, +{0x1FF4, 14},{0x0043, 7},{0x1FF5, 14},{0x0079, 8}, +{0x1FF8, 14},{0x0082, 8},{0x3DFD, 15},{0x0083, 8}, +{0x00F4, 9},{0x00F5, 9},{0x00F8, 9},{0x00F9, 9}, +{0x0102, 9},{0x0103, 9},{0x01F5, 10},{0x01F8, 10}, +{0x01F9, 10},{0x0202, 10},{0x0203, 10},{0x03F9, 11}, +{0x0402, 11},{0x0403, 11},{0x07ED, 12},{0x07F4, 12}, +{0x07F5, 12},{0x07F8, 12},{0x07F9, 12},{0x0802, 12}, +{0x0803, 12},{0x1002, 13},{0x1003, 13},{0x1FF9, 14}, +{0x2002, 14},{0x2003, 14},{0x3EFC, 15},{0x3EFD, 15}, +{0x3F7C, 15},{0x3F7D, 15},{0x0000, 4} +}; + +static const int8_t inter_rvlc_run[169]={ + 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, 2, 2, 2, + 2, 2, 2, 2, 3, 3, 3, 3, + 3, 3, 3, 4, 4, 4, 4, 4, + 5, 5, 5, 5, 6, 6, 6, 6, + 7, 7, 7, 7, 8, 8, 8, 9, + 9, 9, 10, 10, 11, 11, 12, 12, +13, 13, 14, 14, 15, 15, 16, 16, +17, 17, 18, 19, 20, 21, 22, 23, +24, 25, 26, 27, 28, 29, 30, 31, +32, 33, 34, 35, 36, 37, 38, + 0, 0, 0, 0, 0, 1, 1, 1, + 1, 1, 2, 2, 2, 3, 3, 4, + 4, 5, 5, 6, 6, 7, 7, 8, + 8, 9, 9, 10, 10, 11, 11, 12, +12, 13, 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, 41, 42, +43, 44, +}; + +static const int8_t inter_rvlc_level[169]={ + 1, 2, 3, 4, 5, 6, 7, 8, + 9, 10, 11, 12, 13, 14, 15, 16, +17, 18, 19, 1, 2, 3, 4, 5, + 6, 7, 8, 9, 10, 1, 2, 3, + 4, 5, 6, 7, 1, 2, 3, 4, + 5, 6, 7, 1, 2, 3, 4, 5, + 1, 2, 3, 4, 1, 2, 3, 4, + 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, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, + 1, 2, 3, 4, 5, 1, 2, 3, + 4, 5, 1, 2, 3, 1, 2, 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, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, +}; + +static RLTable rvlc_rl_inter = { + 169, + 103, + inter_rvlc, + inter_rvlc_run, + inter_rvlc_level, +}; + +static const uint16_t intra_rvlc[170][2]={ +{0x0006, 3},{0x0007, 3},{0x000A, 4},{0x0009, 5}, +{0x0014, 6},{0x0015, 6},{0x0034, 7},{0x0074, 8}, +{0x0075, 8},{0x00DD, 9},{0x00EC, 9},{0x01EC, 10}, +{0x01ED, 10},{0x01F4, 10},{0x03EC, 11},{0x03ED, 11}, +{0x03F4, 11},{0x077D, 12},{0x07BC, 12},{0x0FBD, 13}, +{0x0FDC, 13},{0x07BD, 12},{0x0FDD, 13},{0x1FBD, 14}, +{0x1FDC, 14},{0x1FDD, 14},{0x1FFC, 15},{0x0001, 4}, +{0x0008, 5},{0x002D, 7},{0x006C, 8},{0x006D, 8}, +{0x00DC, 9},{0x01DD, 10},{0x03DC, 11},{0x03DD, 11}, +{0x077C, 12},{0x0FBC, 13},{0x1F7D, 14},{0x1FBC, 14}, +{0x0004, 5},{0x002C, 7},{0x00BC, 9},{0x01DC, 10}, +{0x03BC, 11},{0x03BD, 11},{0x0EFD, 13},{0x0F7C, 13}, +{0x0F7D, 13},{0x1EFD, 14},{0x1F7C, 14},{0x0005, 5}, +{0x005C, 8},{0x00BD, 9},{0x037D, 11},{0x06FC, 12}, +{0x0EFC, 13},{0x1DFD, 14},{0x1EFC, 14},{0x1FFD, 15}, +{0x000C, 6},{0x005D, 8},{0x01BD, 10},{0x03FD, 12}, +{0x06FD, 12},{0x1BFD, 14},{0x000D, 6},{0x007D, 9}, +{0x02FC, 11},{0x05FC, 12},{0x1BFC, 14},{0x1DFC, 14}, +{0x001C, 7},{0x017C, 10},{0x02FD, 11},{0x05FD, 12}, +{0x2FFC, 15},{0x001D, 7},{0x017D, 10},{0x037C, 11}, +{0x0DFD, 13},{0x2FFD, 15},{0x003C, 8},{0x01BC, 10}, +{0x0BFD, 13},{0x17FD, 14},{0x003D, 8},{0x01FD, 11}, +{0x0DFC, 13},{0x37FC, 15},{0x007C, 9},{0x03FC, 12}, +{0x00FC, 10},{0x0BFC, 13},{0x00FD, 10},{0x37FD, 15}, +{0x01FC, 11},{0x07FC, 13},{0x07FD, 13},{0x0FFC, 14}, +{0x0FFD, 14},{0x17FC, 14},{0x3BFC, 15}, +{0x000B, 4},{0x0078, 8},{0x03F5, 11},{0x0FEC, 13}, +{0x1FEC, 14},{0x0012, 5},{0x00ED, 9},{0x07DC, 12}, +{0x1FED, 14},{0x3BFD, 15},{0x0013, 5},{0x03F8, 11}, +{0x3DFC, 15},{0x0018, 6},{0x07DD, 12},{0x0019, 6}, +{0x07EC, 12},{0x0022, 6},{0x0FED, 13},{0x0023, 6}, +{0x0FF4, 13},{0x0035, 7},{0x0FF5, 13},{0x0038, 7}, +{0x0FF8, 13},{0x0039, 7},{0x0FF9, 13},{0x0042, 7}, +{0x1FF4, 14},{0x0043, 7},{0x1FF5, 14},{0x0079, 8}, +{0x1FF8, 14},{0x0082, 8},{0x3DFD, 15},{0x0083, 8}, +{0x00F4, 9},{0x00F5, 9},{0x00F8, 9},{0x00F9, 9}, +{0x0102, 9},{0x0103, 9},{0x01F5, 10},{0x01F8, 10}, +{0x01F9, 10},{0x0202, 10},{0x0203, 10},{0x03F9, 11}, +{0x0402, 11},{0x0403, 11},{0x07ED, 12},{0x07F4, 12}, +{0x07F5, 12},{0x07F8, 12},{0x07F9, 12},{0x0802, 12}, +{0x0803, 12},{0x1002, 13},{0x1003, 13},{0x1FF9, 14}, +{0x2002, 14},{0x2003, 14},{0x3EFC, 15},{0x3EFD, 15}, +{0x3F7C, 15},{0x3F7D, 15},{0x0000, 4} +}; + +static const int8_t intra_rvlc_run[169]={ + 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, + 2, 2, 2, 2, 2, 2, 2, 2, + 2, 2, 2, 3, 3, 3, 3, 3, + 3, 3, 3, 3, 4, 4, 4, 4, + 4, 4, 5, 5, 5, 5, 5, 5, + 6, 6, 6, 6, 6, 7, 7, 7, + 7, 7, 8, 8, 8, 8, 9, 9, + 9, 9, 10, 10, 11, 11, 12, 12, +13, 14, 15, 16, 17, 18, 19, + 0, 0, 0, 0, 0, 1, 1, 1, + 1, 1, 2, 2, 2, 3, 3, 4, + 4, 5, 5, 6, 6, 7, 7, 8, + 8, 9, 9, 10, 10, 11, 11, 12, +12, 13, 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, 41, 42, +43, 44, +}; + +static const int8_t intra_rvlc_level[169]={ + 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, 1, 2, 3, 4, 5, + 6, 7, 8, 9, 10, 11, 12, 13, + 1, 2, 3, 4, 5, 6, 7, 8, + 9, 10, 11, 1, 2, 3, 4, 5, + 6, 7, 8, 9, 1, 2, 3, 4, + 5, 6, 1, 2, 3, 4, 5, 6, + 1, 2, 3, 4, 5, 1, 2, 3, + 4, 5, 1, 2, 3, 4, 1, 2, + 3, 4, 1, 2, 1, 2, 1, 2, + 1, 1, 1, 1, 1, 1, 1, + 1, 2, 3, 4, 5, 1, 2, 3, + 4, 5, 1, 2, 3, 1, 2, 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, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, +}; + +static RLTable rvlc_rl_intra = { + 169, + 103, + intra_rvlc, + intra_rvlc_run, + intra_rvlc_level, +}; + +static const uint16_t sprite_trajectory_tab[15][2] = { + {0x00, 2}, {0x02, 3}, {0x03, 3}, {0x04, 3}, {0x05, 3}, {0x06, 3}, + {0x0E, 4}, {0x1E, 5}, {0x3E, 6}, {0x7E, 7}, {0xFE, 8}, + {0x1FE, 9},{0x3FE, 10},{0x7FE, 11},{0xFFE, 12}, +}; + +static const uint8_t mb_type_b_tab[4][2] = { + {1, 1}, {1, 2}, {1, 3}, {1, 4}, +}; + +static const AVRational pixel_aspect[16]={ + {0, 1}, + {1, 1}, + {12, 11}, + {10, 11}, + {16, 11}, + {40, 33}, + {0, 1}, + {0, 1}, + {0, 1}, + {0, 1}, + {0, 1}, + {0, 1}, + {0, 1}, + {0, 1}, + {0, 1}, + {0, 1}, +}; + +/* these matrixes will be permuted for the idct */ +const int16_t ff_mpeg4_default_intra_matrix[64] = { + 8, 17, 18, 19, 21, 23, 25, 27, + 17, 18, 19, 21, 23, 25, 27, 28, + 20, 21, 22, 23, 24, 26, 28, 30, + 21, 22, 23, 24, 26, 28, 30, 32, + 22, 23, 24, 26, 28, 30, 32, 35, + 23, 24, 26, 28, 30, 32, 35, 38, + 25, 26, 28, 30, 32, 35, 38, 41, + 27, 28, 30, 32, 35, 38, 41, 45, +}; + +const int16_t ff_mpeg4_default_non_intra_matrix[64] = { + 16, 17, 18, 19, 20, 21, 22, 23, + 17, 18, 19, 20, 21, 22, 23, 24, + 18, 19, 20, 21, 22, 23, 24, 25, + 19, 20, 21, 22, 23, 24, 26, 27, + 20, 21, 22, 23, 25, 26, 27, 28, + 21, 22, 23, 24, 26, 27, 28, 30, + 22, 23, 24, 26, 27, 28, 30, 31, + 23, 24, 25, 27, 28, 30, 31, 33, +}; + +const uint8_t ff_mpeg4_y_dc_scale_table[32]={ +// 0 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 + 0, 8, 8, 8, 8,10,12,14,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,32,34,36,38,40,42,44,46 +}; +const uint8_t ff_mpeg4_c_dc_scale_table[32]={ +// 0 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 + 0, 8, 8, 8, 8, 9, 9,10,10,11,11,12,12,13,13,14,14,15,15,16,16,17,17,18,18,19,20,21,22,23,24,25 +}; + +const uint16_t ff_mpeg4_resync_prefix[8]={ + 0x7F00, 0x7E00, 0x7C00, 0x7800, 0x7000, 0x6000, 0x4000, 0x0000 +}; + +static const uint8_t mpeg4_dc_threshold[8]={ + 99, 13, 15, 17, 19, 21, 23, 0 +}; 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