From 8a776ad90e00ab2b98e8683ac6182d641a383c3a Mon Sep 17 00:00:00 2001 From: Diego Biurrun Date: Thu, 4 Apr 2013 14:56:01 +0200 Subject: h261: Move shared data tables from a header to a proper C file --- libavcodec/h261data.c | 155 ++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 155 insertions(+) create mode 100644 libavcodec/h261data.c (limited to 'libavcodec/h261data.c') diff --git a/libavcodec/h261data.c b/libavcodec/h261data.c new file mode 100644 index 0000000000..eb8e64a5ce --- /dev/null +++ b/libavcodec/h261data.c @@ -0,0 +1,155 @@ +/* + * copyright (c) 2002-2004 Michael Niedermayer + * copyright (c) 2004 Maarten Daniels + * + * This file is part of Libav. + * + * Libav 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, + * 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 + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA + */ + +/** + * @file + * H.261 tables. + */ + +#include + +#include "rl.h" +#include "h261.h" + +// H.261 VLC table for macroblock addressing +const uint8_t ff_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) +}; + +const uint8_t ff_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 +const uint8_t ff_h261_mtype_code[10] = { + 1, 1, 1, 1, + 1, 1, 1, 1, + 1, 1 +}; + +const uint8_t ff_h261_mtype_bits[10] = { + 4, 7, 1, 5, + 9, 8, 10, 3, + 2, 6 +}; + +const int ff_h261_mtype_map[10] = { + MB_TYPE_INTRA4x4, + MB_TYPE_INTRA4x4 | MB_TYPE_QUANT, + MB_TYPE_CBP, + MB_TYPE_CBP | MB_TYPE_QUANT, + MB_TYPE_16x16, + MB_TYPE_16x16 | MB_TYPE_CBP, + MB_TYPE_16x16 | MB_TYPE_CBP | MB_TYPE_QUANT, + MB_TYPE_16x16 | MB_TYPE_H261_FIL, + MB_TYPE_16x16 | MB_TYPE_H261_FIL | MB_TYPE_CBP, + MB_TYPE_16x16 | MB_TYPE_H261_FIL | MB_TYPE_CBP | MB_TYPE_QUANT +}; + +// H.261 VLC table for motion vectors +const uint8_t ff_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 } +}; + +// H.261 VLC table for coded block pattern +const uint8_t ff_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 +}; + +RLTable ff_h261_rl_tcoeff = { + 64, + 64, + h261_tcoeff_vlc, + h261_tcoeff_run, + h261_tcoeff_level, +}; -- cgit v1.2.3