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author | Michael Niedermayer <michaelni@gmx.at> | 2011-09-12 20:49:20 +0200 |
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committer | Michael Niedermayer <michaelni@gmx.at> | 2011-09-12 21:01:12 +0200 |
commit | 9765caec1b9991e676d1b91db0c04a6242b65d7a (patch) | |
tree | dcd5a8d04e7c5a61aa12b455424fb4d0d9b2d076 /libavcodec/adpcm_data.c | |
parent | f0c64d0d0b16162a46d7b88d09ac0801a94e59a7 (diff) | |
parent | 826c56d16e55f3819a75d01f957dd295aa1e9f3a (diff) | |
download | ffmpeg-9765caec1b9991e676d1b91db0c04a6242b65d7a.tar.gz |
Merge remote-tracking branch 'qatar/master'
* qatar/master:
adpcm: split ADPCM encoders and decoders into separate files.
doc/avconv: fix typo.
rv34: check that subsequent slices have the same type as first one.
smacker demuxer: handle possible av_realloc() failure.
lavfi: add split filter from soc.
lavfi: add showinfo filter
libxavs: add private options corresponding to deprecated global options
Conflicts:
Changelog
libavcodec/adpcm.c
libavfilter/avfilter.h
libavfilter/vf_showinfo.c
libavfilter/vf_split.c
libavformat/smacker.c
Merged-by: Michael Niedermayer <michaelni@gmx.at>
Diffstat (limited to 'libavcodec/adpcm_data.c')
-rw-r--r-- | libavcodec/adpcm_data.c | 78 |
1 files changed, 78 insertions, 0 deletions
diff --git a/libavcodec/adpcm_data.c b/libavcodec/adpcm_data.c new file mode 100644 index 0000000000..3654a8d67d --- /dev/null +++ b/libavcodec/adpcm_data.c @@ -0,0 +1,78 @@ +/* + * Copyright (c) 2001-2003 The ffmpeg Project + * + * 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 + * ADPCM tables + */ + +#include <stdint.h> + +/* ff_adpcm_step_table[] and ff_adpcm_index_table[] are from the ADPCM + reference source */ +/* This is the index table: */ +const int8_t ff_adpcm_index_table[16] = { + -1, -1, -1, -1, 2, 4, 6, 8, + -1, -1, -1, -1, 2, 4, 6, 8, +}; + +/** + * This is the step table. Note that many programs use slight deviations from + * this table, but such deviations are negligible: + */ +const int16_t ff_adpcm_step_table[89] = { + 7, 8, 9, 10, 11, 12, 13, 14, 16, 17, + 19, 21, 23, 25, 28, 31, 34, 37, 41, 45, + 50, 55, 60, 66, 73, 80, 88, 97, 107, 118, + 130, 143, 157, 173, 190, 209, 230, 253, 279, 307, + 337, 371, 408, 449, 494, 544, 598, 658, 724, 796, + 876, 963, 1060, 1166, 1282, 1411, 1552, 1707, 1878, 2066, + 2272, 2499, 2749, 3024, 3327, 3660, 4026, 4428, 4871, 5358, + 5894, 6484, 7132, 7845, 8630, 9493, 10442, 11487, 12635, 13899, + 15289, 16818, 18500, 20350, 22385, 24623, 27086, 29794, 32767 +}; + +/* These are for MS-ADPCM */ +/* ff_adpcm_AdaptationTable[], ff_adpcm_AdaptCoeff1[], and + ff_adpcm_AdaptCoeff2[] are from libsndfile */ +const int16_t ff_adpcm_AdaptationTable[] = { + 230, 230, 230, 230, 307, 409, 512, 614, + 768, 614, 512, 409, 307, 230, 230, 230 +}; + +/** Divided by 4 to fit in 8-bit integers */ +const uint8_t ff_adpcm_AdaptCoeff1[] = { + 64, 128, 0, 48, 60, 115, 98 +}; + +/** Divided by 4 to fit in 8-bit integers */ +const int8_t ff_adpcm_AdaptCoeff2[] = { + 0, -64, 0, 16, 0, -52, -58 +}; + +const int16_t ff_adpcm_yamaha_indexscale[] = { + 230, 230, 230, 230, 307, 409, 512, 614, + 230, 230, 230, 230, 307, 409, 512, 614 +}; + +const int8_t ff_adpcm_yamaha_difflookup[] = { + 1, 3, 5, 7, 9, 11, 13, 15, + -1, -3, -5, -7, -9, -11, -13, -15 +}; |