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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 17:32:43 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 17:32:43 +0000 |
commit | 6bf0a5cb5034a7e684dcc3500e841785237ce2dd (patch) | |
tree | a68f146d7fa01f0134297619fbe7e33db084e0aa /media/ffvpx/libavcodec/mpegaudiotab.h | |
parent | Initial commit. (diff) | |
download | thunderbird-6bf0a5cb5034a7e684dcc3500e841785237ce2dd.tar.xz thunderbird-6bf0a5cb5034a7e684dcc3500e841785237ce2dd.zip |
Adding upstream version 1:115.7.0.upstream/1%115.7.0upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to '')
-rw-r--r-- | media/ffvpx/libavcodec/mpegaudiotab.h | 102 |
1 files changed, 102 insertions, 0 deletions
diff --git a/media/ffvpx/libavcodec/mpegaudiotab.h b/media/ffvpx/libavcodec/mpegaudiotab.h new file mode 100644 index 0000000000..bb2e5de4ea --- /dev/null +++ b/media/ffvpx/libavcodec/mpegaudiotab.h @@ -0,0 +1,102 @@ +/* + * mpeg audio layer 2 tables. Most of them come from the mpeg audio + * specification. + * + * Copyright (c) 2000, 2001 Fabrice Bellard + * + * 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 + * mpeg audio layer 2 tables. + * Most of them come from the mpeg audio specification. + */ + +#ifndef AVCODEC_MPEGAUDIOTAB_H +#define AVCODEC_MPEGAUDIOTAB_H + +#include <stdint.h> +#include "mpegaudio.h" + +static const int costab32[30] = { + FIX(0.54119610014619701222), + FIX(1.3065629648763763537), + + FIX(0.50979557910415917998), + FIX(2.5629154477415054814), + FIX(0.89997622313641556513), + FIX(0.60134488693504528634), + + FIX(0.5024192861881556782), + FIX(5.1011486186891552563), + FIX(0.78815462345125020249), + FIX(0.64682178335999007679), + FIX(0.56694403481635768927), + FIX(1.0606776859903470633), + FIX(1.7224470982383341955), + FIX(0.52249861493968885462), + + FIX(10.19000812354803287), + FIX(0.674808341455005678), + FIX(1.1694399334328846596), + FIX(0.53104259108978413284), + FIX(2.0577810099534108446), + FIX(0.58293496820613388554), + FIX(0.83934964541552681272), + FIX(0.50547095989754364798), + FIX(3.4076084184687189804), + FIX(0.62250412303566482475), + FIX(0.97256823786196078263), + FIX(0.51544730992262455249), + FIX(1.4841646163141661852), + FIX(0.5531038960344445421), + FIX(0.74453627100229857749), + FIX(0.5006029982351962726), +}; + +static const int bitinv32[32] = { + 0, 16, 8, 24, 4, 20, 12, 28, + 2, 18, 10, 26, 6, 22, 14, 30, + 1, 17, 9, 25, 5, 21, 13, 29, + 3, 19, 11, 27, 7, 23, 15, 31 +}; + + +/* signal to noise ratio of each quantification step (could be + computed from quant_steps[]). The values are dB multiplied by 10 +*/ +static const unsigned short quant_snr[17] = { + 70, 110, 160, 208, + 253, 316, 378, 439, + 499, 559, 620, 680, + 740, 800, 861, 920, + 980 +}; + +/* fixed psycho acoustic model. Values of SNR taken from the 'toolame' + project */ +static const float fixed_smr[SBLIMIT] = { + 30, 17, 16, 10, 3, 12, 8, 2.5, + 5, 5, 6, 6, 5, 6, 10, 6, + -4, -10, -21, -30, -42, -55, -68, -75, + -75, -75, -75, -75, -91, -107, -110, -108 +}; + +static const unsigned char nb_scale_factors[4] = { 3, 2, 1, 2 }; + +#endif /* AVCODEC_MPEGAUDIOTAB_H */ |