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aacdec: move aacdec_common to aac/aacdec_tab

Start to clean up the decoder. Also renames a confusingly named file.

Lynne committed 2 years ago

Commit f55b5871 parent fc02b917 files · +21 −14Browse files

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  1. libavcodec/aac/Makefile +5 −0
  2. libavcodec/aac/aacdec_tab.c +308 −0
  3. libavcodec/aac/aacdec_tab.h +55 −0
libavcodec/aac/Makefile+5−0
@@ -0,0 +1,5 @@
1+clean::
2+ $(RM) $(CLEANSUFFIXES:%=libavcodec/aac/%)
3+
4+OBJS-$(CONFIG_AAC_DECODER) += aac/aacdec_tab.o
5+OBJS-$(CONFIG_AAC_FIXED_DECODER) += aac/aacdec_tab.o
libavcodec/aac/aacdec_tab.c+308−0
@@ -0,0 +1,308 @@
1+/*
2+ * Common code and tables of the AAC fixed- and floating-point decoders
3+ * Copyright (c) 2005-2006 Oded Shimon ( ods15 ods15 dyndns org )
4+ * Copyright (c) 2006-2007 Maxim Gavrilov ( maxim.gavrilov gmail com )
5+ *
6+ * This file is part of FFmpeg.
7+ *
8+ * FFmpeg is free software; you can redistribute it and/or
9+ * modify it under the terms of the GNU Lesser General Public
10+ * License as published by the Free Software Foundation; either
11+ * version 2.1 of the License, or (at your option) any later version.
12+ *
13+ * FFmpeg is distributed in the hope that it will be useful,
14+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
15+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16+ * Lesser General Public License for more details.
17+ *
18+ * You should have received a copy of the GNU Lesser General Public
19+ * License along with FFmpeg; if not, write to the Free Software
20+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
21+ */
22+
23+/**
24+ * @file
25+ * Common code and tables of the AAC fixed- and floating-point decoders
26+ */
27+
28+#include "aacdec_tab.h"
29+
30+#include "libavcodec/aac.h"
31+#include "libavcodec/aacps.h"
32+#include "libavcodec/aactab.h"
33+#include "libavcodec/vlc.h"
34+
35+#include "libavutil/attributes.h"
36+#include "libavutil/thread.h"
37+
38+const int8_t ff_tags_per_config[16] = { 0, 1, 1, 2, 3, 3, 4, 5, 0, 0, 0, 5, 5, 16, 5, 0 };
39+
40+const uint8_t ff_aac_channel_layout_map[16][16][3] = {
41+ { { TYPE_SCE, 0, AAC_CHANNEL_FRONT }, },
42+ { { TYPE_CPE, 0, AAC_CHANNEL_FRONT }, },
43+ { { TYPE_SCE, 0, AAC_CHANNEL_FRONT }, { TYPE_CPE, 0, AAC_CHANNEL_FRONT }, },
44+ { { TYPE_SCE, 0, AAC_CHANNEL_FRONT }, { TYPE_CPE, 0, AAC_CHANNEL_FRONT }, { TYPE_SCE, 1, AAC_CHANNEL_BACK }, },
45+ { { TYPE_SCE, 0, AAC_CHANNEL_FRONT }, { TYPE_CPE, 0, AAC_CHANNEL_FRONT }, { TYPE_CPE, 1, AAC_CHANNEL_BACK }, },
46+ { { TYPE_SCE, 0, AAC_CHANNEL_FRONT }, { TYPE_CPE, 0, AAC_CHANNEL_FRONT }, { TYPE_CPE, 1, AAC_CHANNEL_BACK }, { TYPE_LFE, 0, AAC_CHANNEL_LFE }, },
47+ { { TYPE_SCE, 0, AAC_CHANNEL_FRONT }, { TYPE_CPE, 0, AAC_CHANNEL_FRONT }, { TYPE_CPE, 1, AAC_CHANNEL_FRONT }, { TYPE_CPE, 2, AAC_CHANNEL_BACK }, { TYPE_LFE, 0, AAC_CHANNEL_LFE }, },
48+ { { 0, } },
49+ { { 0, } },
50+ { { 0, } },
51+ { { TYPE_SCE, 0, AAC_CHANNEL_FRONT }, { TYPE_CPE, 0, AAC_CHANNEL_FRONT }, { TYPE_CPE, 1, AAC_CHANNEL_BACK }, { TYPE_SCE, 1, AAC_CHANNEL_BACK }, { TYPE_LFE, 0, AAC_CHANNEL_LFE }, },
52+ { { TYPE_SCE, 0, AAC_CHANNEL_FRONT }, { TYPE_CPE, 0, AAC_CHANNEL_FRONT }, { TYPE_CPE, 1, AAC_CHANNEL_BACK }, { TYPE_CPE, 2, AAC_CHANNEL_BACK }, { TYPE_LFE, 0, AAC_CHANNEL_LFE }, },
53+ {
54+ { TYPE_SCE, 0, AAC_CHANNEL_FRONT }, // SCE1 = FC,
55+ { TYPE_CPE, 0, AAC_CHANNEL_FRONT }, // CPE1 = FLc and FRc,
56+ { TYPE_CPE, 1, AAC_CHANNEL_FRONT }, // CPE2 = FL and FR,
57+ { TYPE_CPE, 2, AAC_CHANNEL_BACK }, // CPE3 = SiL and SiR,
58+ { TYPE_CPE, 3, AAC_CHANNEL_BACK }, // CPE4 = BL and BR,
59+ { TYPE_SCE, 1, AAC_CHANNEL_BACK }, // SCE2 = BC,
60+ { TYPE_LFE, 0, AAC_CHANNEL_LFE }, // LFE1 = LFE1,
61+ { TYPE_LFE, 1, AAC_CHANNEL_LFE }, // LFE2 = LFE2,
62+ { TYPE_SCE, 2, AAC_CHANNEL_FRONT }, // SCE3 = TpFC,
63+ { TYPE_CPE, 4, AAC_CHANNEL_FRONT }, // CPE5 = TpFL and TpFR,
64+ { TYPE_CPE, 5, AAC_CHANNEL_SIDE }, // CPE6 = TpSiL and TpSiR,
65+ { TYPE_SCE, 3, AAC_CHANNEL_SIDE }, // SCE4 = TpC,
66+ { TYPE_CPE, 6, AAC_CHANNEL_BACK }, // CPE7 = TpBL and TpBR,
67+ { TYPE_SCE, 4, AAC_CHANNEL_BACK }, // SCE5 = TpBC,
68+ { TYPE_SCE, 5, AAC_CHANNEL_FRONT }, // SCE6 = BtFC,
69+ { TYPE_CPE, 7, AAC_CHANNEL_FRONT }, // CPE8 = BtFL and BtFR
70+ },
71+ { { TYPE_SCE, 0, AAC_CHANNEL_FRONT }, { TYPE_CPE, 0, AAC_CHANNEL_FRONT }, { TYPE_CPE, 1, AAC_CHANNEL_BACK }, { TYPE_LFE, 0, AAC_CHANNEL_LFE }, { TYPE_CPE, 2, AAC_CHANNEL_FRONT }, },
72+ { { 0, } },
73+};
74+
75+const int16_t ff_aac_channel_map[3][4][6] = {
76+ {
77+ { AV_CHAN_FRONT_CENTER, AV_CHAN_FRONT_LEFT_OF_CENTER, AV_CHAN_FRONT_RIGHT_OF_CENTER, AV_CHAN_FRONT_LEFT, AV_CHAN_FRONT_RIGHT, AV_CHAN_NONE },
78+ { AV_CHAN_UNUSED, AV_CHAN_NONE, AV_CHAN_NONE, AV_CHAN_NONE, AV_CHAN_NONE, AV_CHAN_NONE },
79+ { AV_CHAN_UNUSED, AV_CHAN_SIDE_LEFT, AV_CHAN_SIDE_RIGHT, AV_CHAN_BACK_LEFT, AV_CHAN_BACK_RIGHT, AV_CHAN_BACK_CENTER },
80+ { AV_CHAN_LOW_FREQUENCY, AV_CHAN_LOW_FREQUENCY_2, AV_CHAN_NONE, AV_CHAN_NONE, AV_CHAN_NONE, AV_CHAN_NONE },
81+ },
82+ {
83+ { AV_CHAN_TOP_FRONT_CENTER, AV_CHAN_NONE, AV_CHAN_NONE, AV_CHAN_TOP_FRONT_LEFT, AV_CHAN_TOP_FRONT_RIGHT, AV_CHAN_NONE },
84+ { AV_CHAN_UNUSED, AV_CHAN_TOP_SIDE_LEFT, AV_CHAN_TOP_SIDE_RIGHT, AV_CHAN_NONE, AV_CHAN_NONE, AV_CHAN_TOP_CENTER},
85+ { AV_CHAN_UNUSED, AV_CHAN_NONE, AV_CHAN_NONE, AV_CHAN_TOP_BACK_LEFT, AV_CHAN_TOP_BACK_RIGHT, AV_CHAN_TOP_BACK_CENTER},
86+ { AV_CHAN_NONE, AV_CHAN_NONE, AV_CHAN_NONE, AV_CHAN_NONE, AV_CHAN_NONE, AV_CHAN_NONE},
87+ },
88+ {
89+ { AV_CHAN_BOTTOM_FRONT_CENTER, AV_CHAN_NONE, AV_CHAN_NONE, AV_CHAN_BOTTOM_FRONT_LEFT, AV_CHAN_BOTTOM_FRONT_RIGHT, AV_CHAN_NONE },
90+ { AV_CHAN_NONE, AV_CHAN_NONE, AV_CHAN_NONE, AV_CHAN_NONE, AV_CHAN_NONE, AV_CHAN_NONE },
91+ { AV_CHAN_NONE, AV_CHAN_NONE, AV_CHAN_NONE, AV_CHAN_NONE, AV_CHAN_NONE, AV_CHAN_NONE },
92+ { AV_CHAN_NONE, AV_CHAN_NONE, AV_CHAN_NONE, AV_CHAN_NONE, AV_CHAN_NONE, AV_CHAN_NONE },
93+ },
94+};
95+
96+const AVChannelLayout ff_aac_ch_layout[] = {
97+ AV_CHANNEL_LAYOUT_MONO,
98+ AV_CHANNEL_LAYOUT_STEREO,
99+ AV_CHANNEL_LAYOUT_SURROUND,
100+ AV_CHANNEL_LAYOUT_4POINT0,
101+ AV_CHANNEL_LAYOUT_5POINT0_BACK,
102+ AV_CHANNEL_LAYOUT_5POINT1_BACK,
103+ AV_CHANNEL_LAYOUT_7POINT1_WIDE_BACK,
104+ AV_CHANNEL_LAYOUT_6POINT1_BACK,
105+ AV_CHANNEL_LAYOUT_7POINT1,
106+ AV_CHANNEL_LAYOUT_22POINT2,
107+ AV_CHANNEL_LAYOUT_7POINT1_TOP_BACK,
108+ { 0 },
109+};
110+
111+VLCElem ff_vlc_scalefactors[352];
112+const VLCElem *ff_vlc_spectral[11];
113+
114+/// Huffman tables for SBR
115+
116+static const uint8_t sbr_huffman_tab[][2] = {
117+ /* t_huffman_env_1_5dB - 121 entries */
118+ { 60, 2 }, { 59, 2 }, { 61, 3 }, { 58, 3 }, { 62, 4 },
119+ { 57, 4 }, { 63, 5 }, { 56, 5 }, { 64, 6 }, { 55, 6 },
120+ { 65, 7 }, { 54, 7 }, { 66, 8 }, { 53, 8 }, { 67, 9 },
121+ { 52, 9 }, { 51, 10 }, { 68, 10 }, { 50, 11 }, { 69, 12 },
122+ { 49, 12 }, { 70, 13 }, { 48, 13 }, { 47, 13 }, { 71, 14 },
123+ { 46, 14 }, { 72, 14 }, { 45, 14 }, { 44, 15 }, { 73, 15 },
124+ { 41, 16 }, { 42, 16 }, { 43, 16 }, { 74, 16 }, { 36, 16 },
125+ { 40, 16 }, { 76, 16 }, { 34, 17 }, { 39, 17 }, { 75, 17 },
126+ { 37, 17 }, { 35, 18 }, { 38, 18 }, { 0, 18 }, { 1, 18 },
127+ { 2, 18 }, { 3, 18 }, { 4, 18 }, { 5, 18 }, { 6, 19 },
128+ { 7, 19 }, { 8, 19 }, { 9, 19 }, { 10, 19 }, { 11, 19 },
129+ { 12, 19 }, { 13, 19 }, { 14, 19 }, { 15, 19 }, { 16, 19 },
130+ { 17, 19 }, { 18, 19 }, { 19, 19 }, { 20, 19 }, { 21, 19 },
131+ { 22, 19 }, { 23, 19 }, { 24, 19 }, { 25, 19 }, { 26, 19 },
132+ { 27, 19 }, { 28, 19 }, { 29, 19 }, { 30, 19 }, { 31, 19 },
133+ { 32, 19 }, { 33, 19 }, { 77, 19 }, { 78, 19 }, { 79, 19 },
134+ { 80, 19 }, { 81, 19 }, { 82, 19 }, { 83, 19 }, { 84, 19 },
135+ { 85, 19 }, { 86, 19 }, { 87, 19 }, { 88, 19 }, { 89, 19 },
136+ { 90, 19 }, { 91, 19 }, { 92, 19 }, { 93, 19 }, { 94, 19 },
137+ { 95, 19 }, { 96, 19 }, { 97, 19 }, { 98, 19 }, { 99, 19 },
138+ { 100, 19 }, { 101, 19 }, { 102, 19 }, { 103, 19 }, { 104, 19 },
139+ { 105, 19 }, { 106, 19 }, { 107, 19 }, { 108, 19 }, { 109, 19 },
140+ { 110, 19 }, { 111, 19 }, { 112, 19 }, { 113, 19 }, { 114, 19 },
141+ { 115, 19 }, { 116, 19 }, { 117, 19 }, { 118, 19 }, { 119, 19 },
142+ { 120, 19 },
143+ /* f_huffman_env_1_5dB - 121 entries */
144+ { 60, 2 }, { 59, 2 }, { 61, 3 }, { 58, 3 }, { 57, 4 },
145+ { 62, 4 }, { 56, 5 }, { 63, 5 }, { 55, 6 }, { 64, 6 },
146+ { 54, 7 }, { 65, 8 }, { 53, 8 }, { 66, 8 }, { 52, 9 },
147+ { 67, 9 }, { 51, 9 }, { 68, 10 }, { 50, 10 }, { 69, 11 },
148+ { 49, 11 }, { 70, 11 }, { 71, 11 }, { 48, 12 }, { 72, 12 },
149+ { 47, 12 }, { 73, 12 }, { 74, 13 }, { 46, 13 }, { 45, 13 },
150+ { 75, 13 }, { 76, 14 }, { 77, 14 }, { 44, 14 }, { 43, 15 },
151+ { 42, 15 }, { 41, 16 }, { 78, 16 }, { 79, 16 }, { 40, 16 },
152+ { 39, 16 }, { 80, 17 }, { 81, 17 }, { 36, 17 }, { 37, 17 },
153+ { 38, 17 }, { 34, 17 }, { 32, 18 }, { 82, 18 }, { 83, 18 },
154+ { 85, 18 }, { 19, 18 }, { 35, 18 }, { 86, 18 }, { 87, 18 },
155+ { 30, 18 }, { 33, 18 }, { 84, 18 }, { 88, 18 }, { 104, 18 },
156+ { 9, 19 }, { 14, 19 }, { 16, 19 }, { 17, 19 }, { 23, 19 },
157+ { 27, 19 }, { 29, 19 }, { 31, 19 }, { 90, 19 }, { 97, 19 },
158+ { 102, 19 }, { 107, 19 }, { 108, 19 }, { 0, 19 }, { 1, 19 },
159+ { 2, 20 }, { 3, 20 }, { 4, 20 }, { 5, 20 }, { 6, 20 },
160+ { 7, 20 }, { 8, 20 }, { 10, 20 }, { 11, 20 }, { 12, 20 },
161+ { 13, 20 }, { 15, 20 }, { 18, 20 }, { 20, 20 }, { 21, 20 },
162+ { 22, 20 }, { 24, 20 }, { 25, 20 }, { 26, 20 }, { 28, 20 },
163+ { 89, 20 }, { 91, 20 }, { 92, 20 }, { 93, 20 }, { 94, 20 },
164+ { 95, 20 }, { 96, 20 }, { 98, 20 }, { 99, 20 }, { 100, 20 },
165+ { 101, 20 }, { 103, 20 }, { 105, 20 }, { 106, 20 }, { 109, 20 },
166+ { 110, 20 }, { 111, 20 }, { 112, 20 }, { 113, 20 }, { 114, 20 },
167+ { 115, 20 }, { 116, 20 }, { 117, 20 }, { 118, 20 }, { 119, 20 },
168+ { 120, 20 },
169+ /* t_huffman_env_bal_1_5dB - 49 entries */
170+ { 24, 1 }, { 25, 2 }, { 23, 3 }, { 26, 4 }, { 22, 5 },
171+ { 27, 6 }, { 21, 7 }, { 28, 8 }, { 20, 9 }, { 19, 11 },
172+ { 29, 11 }, { 18, 12 }, { 30, 12 }, { 31, 15 }, { 17, 16 },
173+ { 32, 16 }, { 0, 16 }, { 1, 16 }, { 2, 16 }, { 3, 16 },
174+ { 4, 16 }, { 5, 16 }, { 6, 16 }, { 7, 16 }, { 8, 16 },
175+ { 9, 16 }, { 10, 16 }, { 11, 16 }, { 12, 16 }, { 13, 16 },
176+ { 14, 16 }, { 15, 16 }, { 16, 16 }, { 33, 16 }, { 34, 16 },
177+ { 35, 16 }, { 36, 16 }, { 37, 16 }, { 38, 16 }, { 39, 17 },
178+ { 40, 17 }, { 41, 17 }, { 42, 17 }, { 43, 17 }, { 44, 17 },
179+ { 45, 17 }, { 46, 17 }, { 47, 17 }, { 48, 17 },
180+ /* f_huffman_env_bal_1_5dB - 49 entries */
181+ { 24, 1 }, { 23, 2 }, { 25, 3 }, { 22, 4 }, { 26, 5 },
182+ { 27, 6 }, { 21, 7 }, { 20, 8 }, { 28, 9 }, { 19, 11 },
183+ { 29, 11 }, { 18, 11 }, { 30, 12 }, { 17, 14 }, { 31, 15 },
184+ { 32, 16 }, { 15, 16 }, { 16, 17 }, { 0, 18 }, { 1, 18 },
185+ { 2, 18 }, { 3, 18 }, { 4, 18 }, { 5, 18 }, { 6, 18 },
186+ { 7, 18 }, { 8, 18 }, { 9, 18 }, { 10, 18 }, { 11, 18 },
187+ { 12, 18 }, { 13, 18 }, { 14, 18 }, { 33, 18 }, { 34, 18 },
188+ { 35, 18 }, { 36, 18 }, { 37, 18 }, { 38, 18 }, { 39, 18 },
189+ { 40, 18 }, { 41, 18 }, { 42, 18 }, { 43, 18 }, { 44, 18 },
190+ { 45, 18 }, { 46, 18 }, { 47, 19 }, { 48, 19 },
191+ /* t_huffman_env_3_0dB - 63 entries */
192+ { 31, 1 }, { 30, 2 }, { 32, 3 }, { 29, 4 }, { 33, 5 },
193+ { 28, 6 }, { 34, 7 }, { 27, 8 }, { 35, 9 }, { 26, 11 },
194+ { 36, 11 }, { 25, 12 }, { 24, 13 }, { 37, 13 }, { 23, 14 },
195+ { 38, 14 }, { 22, 14 }, { 21, 14 }, { 39, 14 }, { 40, 15 },
196+ { 41, 16 }, { 18, 16 }, { 20, 16 }, { 19, 16 }, { 17, 17 },
197+ { 42, 17 }, { 43, 18 }, { 0, 18 }, { 1, 18 }, { 2, 19 },
198+ { 3, 19 }, { 4, 19 }, { 5, 19 }, { 6, 19 }, { 7, 19 },
199+ { 8, 19 }, { 9, 19 }, { 10, 19 }, { 11, 19 }, { 12, 19 },
200+ { 13, 19 }, { 14, 19 }, { 15, 19 }, { 16, 19 }, { 44, 19 },
201+ { 45, 19 }, { 46, 19 }, { 47, 19 }, { 48, 19 }, { 49, 19 },
202+ { 50, 19 }, { 51, 19 }, { 52, 19 }, { 53, 19 }, { 54, 19 },
203+ { 55, 19 }, { 56, 19 }, { 57, 19 }, { 58, 19 }, { 59, 19 },
204+ { 60, 19 }, { 61, 19 }, { 62, 19 },
205+ /* f_huffman_env_3_0dB - 63 entries */
206+ { 31, 1 }, { 30, 2 }, { 32, 3 }, { 29, 4 }, { 33, 5 },
207+ { 28, 6 }, { 34, 8 }, { 27, 8 }, { 35, 9 }, { 26, 9 },
208+ { 36, 10 }, { 25, 10 }, { 37, 11 }, { 24, 11 }, { 38, 12 },
209+ { 23, 12 }, { 39, 13 }, { 40, 14 }, { 22, 14 }, { 21, 15 },
210+ { 41, 15 }, { 42, 15 }, { 20, 16 }, { 19, 16 }, { 43, 16 },
211+ { 44, 16 }, { 18, 17 }, { 16, 17 }, { 45, 17 }, { 46, 17 },
212+ { 17, 18 }, { 49, 18 }, { 13, 18 }, { 7, 18 }, { 12, 18 },
213+ { 47, 18 }, { 48, 18 }, { 9, 19 }, { 10, 19 }, { 15, 19 },
214+ { 51, 19 }, { 52, 19 }, { 53, 19 }, { 56, 19 }, { 8, 19 },
215+ { 11, 19 }, { 55, 19 }, { 0, 20 }, { 1, 20 }, { 2, 20 },
216+ { 3, 20 }, { 4, 20 }, { 5, 20 }, { 6, 20 }, { 14, 20 },
217+ { 50, 20 }, { 54, 20 }, { 57, 20 }, { 58, 20 }, { 59, 20 },
218+ { 60, 20 }, { 61, 20 }, { 62, 20 },
219+ /* t_huffman_env_bal_3_0dB - 25 entries */
220+ { 12, 1 }, { 13, 2 }, { 11, 3 }, { 10, 4 }, { 14, 5 },
221+ { 15, 6 }, { 9, 7 }, { 8, 8 }, { 16, 9 }, { 7, 12 },
222+ { 0, 13 }, { 1, 13 }, { 2, 13 }, { 3, 13 }, { 4, 13 },
223+ { 5, 13 }, { 6, 13 }, { 17, 13 }, { 18, 13 }, { 19, 13 },
224+ { 20, 13 }, { 21, 13 }, { 22, 13 }, { 23, 14 }, { 24, 14 },
225+ /* f_huffman_env_bal_3_0dB - 25 entries */
226+ { 12, 1 }, { 11, 2 }, { 13, 3 }, { 10, 4 }, { 14, 5 },
227+ { 15, 6 }, { 9, 7 }, { 8, 8 }, { 16, 9 }, { 7, 11 },
228+ { 17, 12 }, { 18, 13 }, { 0, 13 }, { 1, 13 }, { 2, 13 },
229+ { 3, 13 }, { 4, 13 }, { 5, 14 }, { 6, 14 }, { 19, 14 },
230+ { 20, 14 }, { 21, 14 }, { 22, 14 }, { 23, 14 }, { 24, 14 },
231+ /* t_huffman_noise_3_0dB - 63 entries */
232+ { 31, 1 }, { 32, 2 }, { 30, 3 }, { 29, 4 }, { 33, 5 },
233+ { 28, 6 }, { 34, 8 }, { 27, 8 }, { 35, 10 }, { 26, 11 },
234+ { 36, 13 }, { 42, 13 }, { 0, 13 }, { 1, 13 }, { 2, 13 },
235+ { 3, 13 }, { 4, 13 }, { 5, 13 }, { 6, 13 }, { 7, 13 },
236+ { 8, 13 }, { 9, 13 }, { 10, 13 }, { 11, 13 }, { 12, 13 },
237+ { 13, 13 }, { 14, 13 }, { 15, 13 }, { 16, 13 }, { 17, 13 },
238+ { 18, 13 }, { 19, 13 }, { 20, 13 }, { 21, 13 }, { 22, 13 },
239+ { 23, 13 }, { 24, 13 }, { 25, 13 }, { 37, 13 }, { 38, 13 },
240+ { 39, 13 }, { 40, 13 }, { 41, 13 }, { 43, 13 }, { 44, 13 },
241+ { 45, 13 }, { 46, 13 }, { 47, 13 }, { 48, 13 }, { 49, 13 },
242+ { 50, 13 }, { 51, 13 }, { 52, 13 }, { 53, 13 }, { 54, 13 },
243+ { 55, 13 }, { 56, 13 }, { 57, 13 }, { 58, 13 }, { 59, 13 },
244+ { 60, 13 }, { 61, 14 }, { 62, 14 },
245+ /* t_huffman_noise_bal_3_0dB - 25 entries */
246+ { 12, 1 }, { 11, 2 }, { 13, 3 }, { 10, 5 }, { 14, 6 },
247+ { 0, 8 }, { 1, 8 }, { 2, 8 }, { 3, 8 }, { 4, 8 },
248+ { 5, 8 }, { 6, 8 }, { 7, 8 }, { 8, 8 }, { 9, 8 },
249+ { 15, 8 }, { 16, 8 }, { 17, 8 }, { 18, 8 }, { 19, 8 },
250+ { 20, 8 }, { 21, 8 }, { 22, 8 }, { 23, 8 }, { 24, 8 },
251+};
252+
253+static const uint8_t sbr_huffman_nb_codes[] = {
254+ 121, 121, 49, 49, 63, 63, 25, 25, 63, 25
255+};
256+
257+static const int8_t sbr_vlc_offsets[10] = {
258+ -60, -60, -24, -24, -31, -31, -12, -12, -31, -12
259+};
260+
261+const VLCElem *ff_aac_sbr_vlc[10];
262+
263+static av_cold void aacdec_common_init(void)
264+{
265+ static VLCElem vlc_buf[(304 + 270 + 550 + 300 + 328 +
266+ 294 + 306 + 268 + 510 + 366 + 462) +
267+ (1098 + 1092 + 768 + 1026 + 1058 +
268+ 1052 + 544 + 544 + 592 + 512)];
269+ VLCInitState state = VLC_INIT_STATE(vlc_buf);
270+ const uint8_t (*tab)[2] = sbr_huffman_tab;
271+
272+ for (unsigned i = 0; i < 11; i++) {
273+#define TAB_WRAP_SIZE(name) name[i], sizeof(name[i][0]), sizeof(name[i][0])
274+ ff_vlc_spectral[i] =
275+ ff_vlc_init_tables_sparse(&state, 8, ff_aac_spectral_sizes[i],
276+ TAB_WRAP_SIZE(ff_aac_spectral_bits),
277+ TAB_WRAP_SIZE(ff_aac_spectral_codes),
278+ TAB_WRAP_SIZE(ff_aac_codebook_vector_idx),
279+ 0);
280+ }
281+
282+ VLC_INIT_STATIC_TABLE(ff_vlc_scalefactors, 7,
283+ FF_ARRAY_ELEMS(ff_aac_scalefactor_code),
284+ ff_aac_scalefactor_bits,
285+ sizeof(ff_aac_scalefactor_bits[0]),
286+ sizeof(ff_aac_scalefactor_bits[0]),
287+ ff_aac_scalefactor_code,
288+ sizeof(ff_aac_scalefactor_code[0]),
289+ sizeof(ff_aac_scalefactor_code[0]), 0);
290+
291+ // SBR VLC table initialization
292+ for (int i = 0; i < FF_ARRAY_ELEMS(ff_aac_sbr_vlc); i++) {
293+ ff_aac_sbr_vlc[i] =
294+ ff_vlc_init_tables_from_lengths(&state, 9, sbr_huffman_nb_codes[i],
295+ &tab[0][1], 2,
296+ &tab[0][0], 2, 1,
297+ sbr_vlc_offsets[i], 0);
298+ tab += sbr_huffman_nb_codes[i];
299+ }
300+
301+ ff_ps_init_common();
302+}
303+
304+av_cold void ff_aacdec_common_init_once(void)
305+{
306+ static AVOnce init_static_once = AV_ONCE_INIT;
307+ ff_thread_once(&init_static_once, aacdec_common_init);
308+}
libavcodec/aac/aacdec_tab.h+55−0
@@ -0,0 +1,55 @@
1+/*
2+ * AAC decoder data
3+ *
4+ * This file is part of FFmpeg.
5+ *
6+ * FFmpeg is free software; you can redistribute it and/or
7+ * modify it under the terms of the GNU Lesser General Public
8+ * License as published by the Free Software Foundation; either
9+ * version 2.1 of the License, or (at your option) any later version.
10+ *
11+ * FFmpeg is distributed in the hope that it will be useful,
12+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
13+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14+ * Lesser General Public License for more details.
15+ *
16+ * You should have received a copy of the GNU Lesser General Public
17+ * License along with FFmpeg; if not, write to the Free Software
18+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
19+ */
20+
21+/**
22+ * @file
23+ * AAC decoder data
24+ * @author Oded Shimon ( ods15 ods15 dyndns org )
25+ * @author Maxim Gavrilov ( maxim.gavrilov gmail com )
26+ */
27+
28+#ifndef AVCODEC_AAC_AACDEC_TAB_H
29+#define AVCODEC_AAC_AACDEC_TAB_H
30+
31+#include <stdint.h>
32+
33+#include "libavcodec/vlc.h"
34+
35+#include "libavutil/attributes_internal.h"
36+#include "libavutil/channel_layout.h"
37+
38+FF_VISIBILITY_PUSH_HIDDEN
39+void ff_aacdec_common_init_once(void);
40+
41+extern const VLCElem *ff_aac_sbr_vlc[10];
42+
43+extern VLCElem ff_vlc_scalefactors[];
44+extern const VLCElem *ff_vlc_spectral[11];
45+
46+extern const int8_t ff_tags_per_config[16];
47+
48+extern const uint8_t ff_aac_channel_layout_map[16][16][3];
49+
50+extern const int16_t ff_aac_channel_map[3][4][6];
51+
52+extern const AVChannelLayout ff_aac_ch_layout[];
53+FF_VISIBILITY_POP_HIDDEN
54+
55+#endif /* AVCODEC_AAC_AACDEC_TAB_H */

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