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author | Kostya Shishkov <kostya.shishkov@gmail.com> | 2007-11-24 17:42:16 +0000 |
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committer | Kostya Shishkov <kostya.shishkov@gmail.com> | 2007-11-24 17:42:16 +0000 |
commit | e082f4a89b8da92c4af39121febfb55aedc7cd11 (patch) | |
tree | 547a65d933e2b871010b1a82e8b19e2b29338af1 /libavcodec/rv34data.h | |
parent | d3a9c44e1d151eec2dfed53fa29ad15c7cc97f19 (diff) | |
download | ffmpeg-e082f4a89b8da92c4af39121febfb55aedc7cd11.tar.gz |
Data tables for future RV30/40 decoder
Originally committed as revision 11089 to svn://svn.ffmpeg.org/ffmpeg/trunk
Diffstat (limited to 'libavcodec/rv34data.h')
-rw-r--r-- | libavcodec/rv34data.h | 146 |
1 files changed, 146 insertions, 0 deletions
diff --git a/libavcodec/rv34data.h b/libavcodec/rv34data.h new file mode 100644 index 0000000000..7213d29930 --- /dev/null +++ b/libavcodec/rv34data.h @@ -0,0 +1,146 @@ +/* + * RealVideo 4 decoder + * copyright (c) 2007 Konstantin Shishkov + * + * 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 rv34data.h + * Miscellaneous RV30/40 tables. + */ + +#ifndef FFMPEG_RV34DATA_H +#define FFMPEG_RV34DATA_H + +#include <stdint.h> + +/** + * Number of ones in nibble minus one + */ +static const uint8_t rv34_count_ones[16] = { + 0, 0, 0, 1, 0, 1, 1, 2, 0, 1, 1, 2, 1, 2, 2, 3 +}; + +/** + * Values used to reconstruct coded block pattern + */ +static const uint8_t rv34_cbp_code[16] = { + 0x00, 0x20, 0x10, 0x30, 0x02, 0x22, 0x12, 0x32, + 0x01, 0x21, 0x11, 0x31, 0x03, 0x23, 0x13, 0x33 +}; + +/** + * Precalculated results of division by three and modulo three for values 0-107 + * + * A lot of four-tuples in RV40 are represented as c0*27+c1*9+c2*3+c3 + * This table allows conversion from value back to vector + */ +static const uint8_t modulo_three_table[108][4] = { + { 0, 0, 0, 0 }, { 0, 0, 0, 1 }, { 0, 0, 0, 2 }, { 0, 0, 1, 0 }, + { 0, 0, 1, 1 }, { 0, 0, 1, 2 }, { 0, 0, 2, 0 }, { 0, 0, 2, 1 }, + { 0, 0, 2, 2 }, { 0, 1, 0, 0 }, { 0, 1, 0, 1 }, { 0, 1, 0, 2 }, + { 0, 1, 1, 0 }, { 0, 1, 1, 1 }, { 0, 1, 1, 2 }, { 0, 1, 2, 0 }, + { 0, 1, 2, 1 }, { 0, 1, 2, 2 }, { 0, 2, 0, 0 }, { 0, 2, 0, 1 }, + { 0, 2, 0, 2 }, { 0, 2, 1, 0 }, { 0, 2, 1, 1 }, { 0, 2, 1, 2 }, + { 0, 2, 2, 0 }, { 0, 2, 2, 1 }, { 0, 2, 2, 2 }, { 1, 0, 0, 0 }, + { 1, 0, 0, 1 }, { 1, 0, 0, 2 }, { 1, 0, 1, 0 }, { 1, 0, 1, 1 }, + { 1, 0, 1, 2 }, { 1, 0, 2, 0 }, { 1, 0, 2, 1 }, { 1, 0, 2, 2 }, + { 1, 1, 0, 0 }, { 1, 1, 0, 1 }, { 1, 1, 0, 2 }, { 1, 1, 1, 0 }, + { 1, 1, 1, 1 }, { 1, 1, 1, 2 }, { 1, 1, 2, 0 }, { 1, 1, 2, 1 }, + { 1, 1, 2, 2 }, { 1, 2, 0, 0 }, { 1, 2, 0, 1 }, { 1, 2, 0, 2 }, + { 1, 2, 1, 0 }, { 1, 2, 1, 1 }, { 1, 2, 1, 2 }, { 1, 2, 2, 0 }, + { 1, 2, 2, 1 }, { 1, 2, 2, 2 }, { 2, 0, 0, 0 }, { 2, 0, 0, 1 }, + { 2, 0, 0, 2 }, { 2, 0, 1, 0 }, { 2, 0, 1, 1 }, { 2, 0, 1, 2 }, + { 2, 0, 2, 0 }, { 2, 0, 2, 1 }, { 2, 0, 2, 2 }, { 2, 1, 0, 0 }, + { 2, 1, 0, 1 }, { 2, 1, 0, 2 }, { 2, 1, 1, 0 }, { 2, 1, 1, 1 }, + { 2, 1, 1, 2 }, { 2, 1, 2, 0 }, { 2, 1, 2, 1 }, { 2, 1, 2, 2 }, + { 2, 2, 0, 0 }, { 2, 2, 0, 1 }, { 2, 2, 0, 2 }, { 2, 2, 1, 0 }, + { 2, 2, 1, 1 }, { 2, 2, 1, 2 }, { 2, 2, 2, 0 }, { 2, 2, 2, 1 }, + { 2, 2, 2, 2 }, { 3, 0, 0, 0 }, { 3, 0, 0, 1 }, { 3, 0, 0, 2 }, + { 3, 0, 1, 0 }, { 3, 0, 1, 1 }, { 3, 0, 1, 2 }, { 3, 0, 2, 0 }, + { 3, 0, 2, 1 }, { 3, 0, 2, 2 }, { 3, 1, 0, 0 }, { 3, 1, 0, 1 }, + { 3, 1, 0, 2 }, { 3, 1, 1, 0 }, { 3, 1, 1, 1 }, { 3, 1, 1, 2 }, + { 3, 1, 2, 0 }, { 3, 1, 2, 1 }, { 3, 1, 2, 2 }, { 3, 2, 0, 0 }, + { 3, 2, 0, 1 }, { 3, 2, 0, 2 }, { 3, 2, 1, 0 }, { 3, 2, 1, 1 }, + { 3, 2, 1, 2 }, { 3, 2, 2, 0 }, { 3, 2, 2, 1 }, { 3, 2, 2, 2 }, +}; + +/** + * Quantizer values used for AC and DC coefficients in chroma blocks + */ +static const uint8_t rv34_chroma_quant[2][32] = { + { 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, + 16, 17, 17, 18, 19, 20, 20, 21, 22, 22, 23, 23, 24, 24, 25, 25 }, + { 0, 0, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, + 14, 15, 15, 16, 17, 18, 18, 19, 20, 20, 21, 21, 22, 22, 23, 23 } +}; + +/** + * This table is used for dequantizing + */ +static const uint16_t rv34_qscale_tab[32] = { + 60, 67, 76, 85, 96, 108, 121, 136, + 152, 171, 192, 216, 242, 272, 305, 341, + 383, 432, 481, 544, 606, 683, 767, 854, + 963, 1074, 1212, 1392, 1566, 1708, 1978, 2211 +}; + +/** + * 4x4 dezigzag pattern + */ +static const uint8_t rv34_dezigzag[16] = { + 0, 1, 8, 16, + 9, 2, 3, 10, + 17, 24, 25, 18, + 11, 19, 26, 27 +}; + +/** + * Tables used to translate quantizer value into VLC set for decoding + * First table is used for intraframes. + */ +static const uint8_t rv34_quant_to_vlc_set[2][31] = { + { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 1, 1, + 2, 2, 2, 2, 3, 3, 3, 3, 3, 4, 4, 4, 4, 4, 0 }, + { 0, 0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 2, 2, 2, 2, 3, + 3, 3, 3, 4, 4, 4, 4, 5, 5, 5, 5, 6, 6, 6, 6 }, +}; + +/** + * Table for obtaining quantizer difference + * @todo replace it with modified_quant_tab from h263data.h + */ +static const int8_t rv34_dquant_tab[] = { + 0, 0, 2, 1, -1, 1, -1, 1, -1, 1, -1, 1, -1, 1, -1, 1, + -1, 1, -1, 1, -1, 1, -2, 2, -2, 2, -2, 2, -2, 2, -2, 2, + -2, 2, -2, 2, -2, 2, -2, 2, -2, 2, -3, 3, -3, 3, -3, 3, + -3, 3, -3, 3, -3, 3, -3, 3, -3, 3, -3, 2, -3, 1, -3, -5 +}; + +/** + * Maximum number of macroblocks for each of the possible slice offset sizes + * @todo this is the same as ff_mba_max, maybe use it instead + */ +static const uint16_t rv34_mb_max_sizes[6] = { 0x2F, 0x68, 0x18B, 0x62F, 0x18BF, 0x23FF }; +/** + * Bits needed to code slice offset for the given size + * @todo this is the same as ff_mba_length, maybe use it instead + */ +static const uint8_t rv34_mb_bits_sizes[6] = { 6, 7, 9, 11, 13, 14 }; + +#endif /* FFMPEG_RV34DATA_H */ |