FFmpeg coverage


Directory: ../../../ffmpeg/
File: src/libavcodec/aac/aacdec_tab.c
Date: 2024-07-16 12:46:59
Exec Total Coverage
Lines: 22 22 100.0%
Functions: 2 2 100.0%
Branches: 4 4 100.0%

Line Branch Exec Source
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
263 168 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)];
269 168 VLCInitState state = VLC_INIT_STATE(vlc_buf);
270 168 const uint8_t (*tab)[2] = sbr_huffman_tab;
271
272
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2016 for (unsigned i = 0; i < 11; i++) {
273 #define TAB_WRAP_SIZE(name) name[i], sizeof(name[i][0]), sizeof(name[i][0])
274 1848 ff_vlc_spectral[i] =
275 1848 ff_vlc_init_tables_sparse(&state, 8, ff_aac_spectral_sizes[i],
276 1848 TAB_WRAP_SIZE(ff_aac_spectral_bits),
277 1848 TAB_WRAP_SIZE(ff_aac_spectral_codes),
278 1848 TAB_WRAP_SIZE(ff_aac_codebook_vector_idx),
279 0);
280 }
281
282 168 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
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1848 for (int i = 0; i < FF_ARRAY_ELEMS(ff_aac_sbr_vlc); i++) {
293 1680 ff_aac_sbr_vlc[i] =
294 1680 ff_vlc_init_tables_from_lengths(&state, 9, sbr_huffman_nb_codes[i],
295 1680 &tab[0][1], 2,
296 1680 &tab[0][0], 2, 1,
297 1680 sbr_vlc_offsets[i], 0);
298 1680 tab += sbr_huffman_nb_codes[i];
299 }
300
301 168 ff_ps_init_common();
302 168 }
303
304 295 av_cold void ff_aacdec_common_init_once(void)
305 {
306 static AVOnce init_static_once = AV_ONCE_INIT;
307 295 ff_thread_once(&init_static_once, aacdec_common_init);
308 295 }
309