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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 19:33:14 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 19:33:14 +0000
commit36d22d82aa202bb199967e9512281e9a53db42c9 (patch)
tree105e8c98ddea1c1e4784a60a5a6410fa416be2de /media/ffvpx/libavcodec/mpegaudiotab.h
parentInitial commit. (diff)
downloadfirefox-esr-upstream.tar.xz
firefox-esr-upstream.zip
Adding upstream version 115.7.0esr.upstream/115.7.0esrupstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'media/ffvpx/libavcodec/mpegaudiotab.h')
-rw-r--r--media/ffvpx/libavcodec/mpegaudiotab.h102
1 files changed, 102 insertions, 0 deletions
diff --git a/media/ffvpx/libavcodec/mpegaudiotab.h b/media/ffvpx/libavcodec/mpegaudiotab.h
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+/*
+ * 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 */