/src/ffmpeg/libavcodec/dolby_e.c
Line | Count | Source |
1 | | /* |
2 | | * Copyright (C) 2017 foo86 |
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 | | #include "libavutil/channel_layout.h" |
22 | | #include "libavutil/float_dsp.h" |
23 | | #include "libavutil/thread.h" |
24 | | #include "libavutil/mem.h" |
25 | | #include "libavutil/mem_internal.h" |
26 | | #include "libavutil/opt.h" |
27 | | #include "libavutil/tx.h" |
28 | | |
29 | | #include "codec_internal.h" |
30 | | #include "decode.h" |
31 | | #include "get_bits.h" |
32 | | #include "dolby_e.h" |
33 | | #include "kbdwin.h" |
34 | | |
35 | | #define MAX_SEGMENTS 2 |
36 | | |
37 | | #define MAX_GROUPS 8 |
38 | | #define MAX_EXPONENTS 304 |
39 | | #define MAX_MANTISSAS 1024 |
40 | | |
41 | | #define MAX_MSTR_EXP 2 |
42 | | #define MAX_BIAS_EXP 50 |
43 | | |
44 | | enum DBEOutputChannelOrder { |
45 | | CHANNEL_ORDER_DEFAULT, |
46 | | CHANNEL_ORDER_CODED, |
47 | | }; |
48 | | |
49 | | typedef struct DBEGroup { |
50 | | uint8_t nb_exponent; |
51 | | uint8_t nb_bias_exp[MAX_MSTR_EXP]; |
52 | | uint16_t exp_ofs; |
53 | | uint16_t mnt_ofs; |
54 | | const uint8_t *nb_mantissa; |
55 | | uint8_t imdct_idx; |
56 | | uint8_t imdct_phs; |
57 | | uint16_t win_len; |
58 | | uint16_t dst_ofs; |
59 | | uint16_t win_ofs; |
60 | | uint16_t src_ofs; |
61 | | } DBEGroup; |
62 | | |
63 | | typedef struct DBEChannel { |
64 | | int gr_code; |
65 | | int bw_code; |
66 | | |
67 | | int nb_groups; |
68 | | int nb_mstr_exp; |
69 | | DBEGroup groups[MAX_GROUPS]; |
70 | | |
71 | | int exp_strategy[MAX_GROUPS]; |
72 | | int exponents[MAX_EXPONENTS]; |
73 | | int bap[MAX_EXPONENTS]; |
74 | | int idx[MAX_EXPONENTS]; |
75 | | |
76 | | DECLARE_ALIGNED(32, float, mantissas)[MAX_MANTISSAS]; |
77 | | } DBEChannel; |
78 | | |
79 | | typedef struct DBEDecodeContext { |
80 | | const AVClass *class; |
81 | | AVCodecContext *avctx; |
82 | | DBEContext dectx; |
83 | | |
84 | | DBEChannel channels[MAX_SEGMENTS][MAX_CHANNELS]; |
85 | | |
86 | | DECLARE_ALIGNED(32, float, history)[MAX_CHANNELS][256]; |
87 | | |
88 | | AVTXContext *imdct[2][3]; |
89 | | av_tx_fn imdct_fn[2][3]; |
90 | | AVFloatDSPContext *fdsp; |
91 | | } DBEDecodeContext; |
92 | | |
93 | | static const int8_t lfe_channel_tab[MAX_PROG_CONF + 1] = { |
94 | | 5, 5, -1, -1, -1, -1, -1, -1, -1, -1, -1, 4, |
95 | | -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 5, 5 |
96 | | }; |
97 | | |
98 | | static const uint8_t ch_reorder_4[4] = { 0, 2, 1, 3 }; |
99 | | static const uint8_t ch_reorder_6[6] = { 0, 2, 4, 1, 3, 5 }; |
100 | | static const uint8_t ch_reorder_8[8] = { 0, 2, 6, 4, 1, 3, 7, 5 }; |
101 | | static const uint8_t ch_reorder_n[8] = { 0, 2, 4, 6, 1, 3, 5, 7 }; |
102 | | |
103 | | |
104 | | static const uint8_t nb_groups_tab[4] = { 1, 8, 7, 1 }; |
105 | | |
106 | | static const uint8_t nb_mstr_exp_tab[4] = { 2, 2, 2, 1 }; |
107 | | |
108 | | static const uint8_t nb_mantissa_38[38] = { |
109 | | 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, |
110 | | 2, 2, 2, 2, 2, 2, 3, 3, 3, 4, 4, 4, 5, 5, 6, 6, |
111 | | 7, 8, 9, 10, 11, 12, |
112 | | }; |
113 | | |
114 | | static const uint8_t nb_mantissa_44[44] = { |
115 | | 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 2, |
116 | | 2, 2, 2, 2, 2, 3, 3, 3, 3, 4, 4, 5, 5, 6, 7, 7, |
117 | | 8, 9, 10, 11, 12, 13, 15, 16, 18, 20, 22, 25, |
118 | | }; |
119 | | |
120 | | static const uint8_t nb_mantissa_50[50] = { |
121 | | 1, 1, 1, 1, 1, 1, 1, 1, 2, 2, 2, 2, 2, 3, 3, 3, |
122 | | 3, 4, 4, 5, 5, 6, 6, 7, 8, 9, 9, 10, 12, 13, 14, 16, |
123 | | 18, 19, 22, 24, 27, 29, 32, 36, 40, 44, 49, 54, 60, 66, 74, 82, |
124 | | 90, 100, |
125 | | }; |
126 | | |
127 | | static const uint8_t imdct_bits_tab[3] = { 8, 9, 11 }; |
128 | | |
129 | | static const DBEGroup grp_tab_0[1] = { |
130 | | { 50, { 27, 23 }, 0, 0, nb_mantissa_50, 2, 0, 1152, 0, 1408, 0 }, |
131 | | }; |
132 | | |
133 | | static const DBEGroup grp_tab_1[8] = { |
134 | | { 38, { 12, 26 }, 0, 0, nb_mantissa_38, 0, 0, 192, 0, 256, 0 }, |
135 | | { 38, { 12, 26 }, 38, 128, nb_mantissa_38, 0, 1, 256, 64, 448, 0 }, |
136 | | { 38, { 12, 26 }, 76, 256, nb_mantissa_38, 0, 1, 256, 192, 704, 0 }, |
137 | | { 38, { 12, 26 }, 114, 384, nb_mantissa_38, 0, 1, 256, 320, 0, 0 }, |
138 | | { 38, { 12, 26 }, 152, 512, nb_mantissa_38, 0, 1, 256, 448, 0, 0 }, |
139 | | { 38, { 12, 26 }, 190, 640, nb_mantissa_38, 0, 1, 256, 576, 0, 0 }, |
140 | | { 38, { 12, 26 }, 228, 768, nb_mantissa_38, 0, 1, 256, 704, 0, 0 }, |
141 | | { 38, { 12, 26 }, 266, 896, nb_mantissa_38, 0, 1, 256, 832, 0, 0 }, |
142 | | }; |
143 | | |
144 | | static const DBEGroup grp_tab_2[7] = { |
145 | | { 38, { 12, 26 }, 0, 0, nb_mantissa_38, 0, 0, 192, 0, 256, 0 }, |
146 | | { 38, { 12, 26 }, 38, 128, nb_mantissa_38, 0, 1, 256, 64, 448, 0 }, |
147 | | { 38, { 12, 26 }, 76, 256, nb_mantissa_38, 0, 1, 256, 192, 704, 0 }, |
148 | | { 38, { 12, 26 }, 114, 384, nb_mantissa_38, 0, 1, 256, 320, 0, 0 }, |
149 | | { 38, { 12, 26 }, 152, 512, nb_mantissa_38, 0, 1, 256, 448, 0, 0 }, |
150 | | { 38, { 12, 26 }, 190, 640, nb_mantissa_38, 0, 1, 256, 576, 0, 0 }, |
151 | | { 44, { 19, 25 }, 228, 768, nb_mantissa_44, 1, 1, 448, 704, 960, 64 }, |
152 | | }; |
153 | | |
154 | | static const DBEGroup grp_tab_3[1] = { |
155 | | { 21, { 21 }, 0, 0, nb_mantissa_50, 2, 0, 1152, 0, 1408, 0 }, |
156 | | }; |
157 | | |
158 | | static const DBEGroup grp_tab_4[1] = { |
159 | | { 50, { 27, 23 }, 0, 0, nb_mantissa_50, 2, 2, 1152, 0, 1408, 896 }, |
160 | | }; |
161 | | |
162 | | static const DBEGroup grp_tab_5[8] = { |
163 | | { 38, { 12, 26 }, 0, 0, nb_mantissa_38, 0, 1, 256, 64, 0, 0 }, |
164 | | { 38, { 12, 26 }, 38, 128, nb_mantissa_38, 0, 1, 256, 192, 0, 0 }, |
165 | | { 38, { 12, 26 }, 76, 256, nb_mantissa_38, 0, 1, 256, 320, 0, 0 }, |
166 | | { 38, { 12, 26 }, 114, 384, nb_mantissa_38, 0, 1, 256, 448, 0, 0 }, |
167 | | { 38, { 12, 26 }, 152, 512, nb_mantissa_38, 0, 1, 256, 576, 0, 0 }, |
168 | | { 38, { 12, 26 }, 190, 640, nb_mantissa_38, 0, 1, 256, 704, 3008, 0 }, |
169 | | { 38, { 12, 26 }, 228, 768, nb_mantissa_38, 0, 1, 256, 832, 2752, 0 }, |
170 | | { 38, { 12, 26 }, 266, 896, nb_mantissa_38, 0, 2, 192, 960, 2560, 64 }, |
171 | | }; |
172 | | |
173 | | static const DBEGroup grp_tab_6[7] = { |
174 | | { 44, { 19, 25 }, 0, 0, nb_mantissa_44, 1, 1, 448, 0, 3264, 0 }, |
175 | | { 38, { 12, 26 }, 44, 256, nb_mantissa_38, 0, 1, 256, 320, 0, 0 }, |
176 | | { 38, { 12, 26 }, 82, 384, nb_mantissa_38, 0, 1, 256, 448, 0, 0 }, |
177 | | { 38, { 12, 26 }, 120, 512, nb_mantissa_38, 0, 1, 256, 576, 0, 0 }, |
178 | | { 38, { 12, 26 }, 158, 640, nb_mantissa_38, 0, 1, 256, 704, 3008, 0 }, |
179 | | { 38, { 12, 26 }, 196, 768, nb_mantissa_38, 0, 1, 256, 832, 2752, 0 }, |
180 | | { 38, { 12, 26 }, 234, 896, nb_mantissa_38, 0, 2, 192, 960, 2560, 64 }, |
181 | | }; |
182 | | |
183 | | static const DBEGroup grp_tab_7[1] = { |
184 | | { 21, { 21 }, 0, 0, nb_mantissa_50, 2, 2, 1152, 0, 1408, 896 }, |
185 | | }; |
186 | | |
187 | | static const DBEGroup *const frm_ofs_tab[2][4] = { |
188 | | { grp_tab_0, grp_tab_1, grp_tab_2, grp_tab_3 }, |
189 | | { grp_tab_4, grp_tab_5, grp_tab_6, grp_tab_7 } |
190 | | }; |
191 | | |
192 | | static const uint8_t mantissa_size1[16][4] = { |
193 | | { 0, 0, 0, 0 }, { 2, 1, 1, 1 }, { 3, 2, 1, 1 }, { 4, 3, 2, 1 }, |
194 | | { 5, 4, 3, 2 }, { 6, 5, 4, 3 }, { 7, 6, 5, 4 }, { 8, 7, 6, 5 }, |
195 | | { 9, 8, 7, 6 }, { 10, 9, 8, 7 }, { 11, 10, 9, 8 }, { 12, 11, 10, 9 }, |
196 | | { 13, 12, 11, 10 }, { 14, 13, 12, 11 }, { 15, 14, 13, 12 }, { 16, 15, 14, 13 }, |
197 | | }; |
198 | | |
199 | | static const uint8_t mantissa_size2[16][4] = { |
200 | | { 0, 0, 0, 0 }, { 2, 1, 2, 2 }, { 3, 2, 3, 3 }, { 4, 3, 4, 4 }, |
201 | | { 5, 4, 5, 5 }, { 6, 5, 6, 6 }, { 7, 6, 7, 7 }, { 8, 7, 8, 8 }, |
202 | | { 9, 8, 9, 9 }, { 10, 9, 10, 10 }, { 11, 10, 11, 11 }, { 12, 11, 12, 12 }, |
203 | | { 13, 12, 13, 13 }, { 14, 13, 14, 14 }, { 15, 14, 15, 15 }, { 16, 15, 16, 16 }, |
204 | | }; |
205 | | |
206 | | static const float start_window[192] = { |
207 | | 0.00161569379826, 0.00185748233347, 0.00198562758548, 0.00207834078104, |
208 | | 0.00215717748523, 0.00223067096393, 0.00230299213147, 0.00237651215396, |
209 | | 0.00245275561606, 0.00253281402069, 0.00261754673613, 0.00270768786168, |
210 | | 0.00280390761895, 0.00290684998656, 0.00301715751161, 0.00313548872798, |
211 | | 0.00326253122934, 0.00339901215995, 0.00354570716636, 0.00370344845023, |
212 | | 0.00387313232586, 0.00405572653911, 0.00425227750970, 0.00446391759265, |
213 | | 0.00469187240551, 0.00493746822816, 0.00520213944619, 0.00548743597507, |
214 | | 0.00579503056737, 0.00612672586953, 0.00648446105606, 0.00687031782873, |
215 | | 0.00728652552677, 0.00773546505205, 0.00821967127415, 0.00874183354619, |
216 | | 0.00930479393832, 0.00991154278653, 0.01056521116692, 0.01126905994567, |
217 | | 0.01202646513050, 0.01284089936559, 0.01371590957417, 0.01465509096066, |
218 | | 0.01566205783408, 0.01674041199523, 0.01789370972358, 0.01912542867865, |
219 | | 0.02043893626265, 0.02183746113793, 0.02332406961796, 0.02490164852364, |
220 | | 0.02657289580178, 0.02834031974193, 0.03020624702903, 0.03217283918354, |
221 | | 0.03424211623810, 0.03641598586180, 0.03869627565015, 0.04108476601498, |
222 | | 0.04358322107390, 0.04619341515939, 0.04891715301882, 0.05175628239149, |
223 | | |
224 | | 0.05471237327267, 0.05778734733755, 0.06098291402413, 0.06430101352084, |
225 | | 0.06774345212186, 0.07131188644726, 0.07500780649199, 0.07883251748595, |
226 | | 0.08278712056651, 0.08687249228061, 0.09108926295730, 0.09543779401074, |
227 | | 0.09991815425851, 0.10453009536427, 0.10927302653894, 0.11414598865987, |
228 | | 0.11914762799220, 0.12427616972097, 0.12952939152560, 0.13490459744934, |
229 | | 0.14039859233595, 0.14600765712201, 0.15172752528722, 0.15755336077528, |
230 | | 0.16347973770491, 0.16950062219342, 0.17560935661442, 0.18179864660619, |
231 | | 0.18806055113821, 0.19438647593012, 0.20076717050010, 0.20719272909882, |
232 | | 0.21365259576030, 0.22013557367283, 0.22662983904194, 0.23312295958328, |
233 | | 0.23960191774666, 0.24605313873388, 0.25246252333253, 0.25881548554631, |
234 | | 0.26509699495987, 0.27129162373316, 0.27738359807707, 0.28335685401987, |
235 | | 0.28919509723179, 0.29488186663467, 0.30040060148455, 0.30573471157819, |
236 | | 0.31086765019993, 0.31578298939317, 0.32046449711227, 0.32489621578468, |
237 | | 0.32906254179156, 0.33294830535654, 0.33653885031840, 0.33982011325336, |
238 | | 0.34277870140679, 0.34540196889300, 0.34767809062480, 0.34959613344194, |
239 | | 0.35114612391958, 0.35231911235422, 0.35310723244504, 0.35350375621308, |
240 | | |
241 | | 0.35350314372945, 0.35310108725579, 0.35229454943591, 0.35108179521634, |
242 | | 0.34946241721522, 0.34743735430290, 0.34500890320420, 0.34218072298001, |
243 | | 0.33895783229541, 0.33534659943168, 0.33135472505060, 0.32699121776996, |
244 | | 0.32226636266000, 0.31719168282019, 0.31177989424432, 0.30604485422875, |
245 | | 0.30000150362379, 0.29366580327088, 0.28705466500775, 0.28018587766131, |
246 | | 0.27307802848095, 0.26575042049535, 0.25822298630189, 0.25051619882000, |
247 | | 0.24265097955783, 0.23464860495522, 0.22653061137548, 0.21831869932335, |
248 | | 0.21003463746705, 0.20170016703857, 0.19333690717811, 0.18496626177620, |
249 | | 0.17660932835062, 0.16828680947474, 0.16001892724986, 0.15182534128597, |
250 | | 0.14372507062477, 0.13573642000364, 0.12787691082233, 0.12016321713317, |
251 | | 0.11261110693234, 0.10523538898282, 0.09804986534955, 0.09106728977263, |
252 | | 0.08429933194438, 0.07775654768810, 0.07144835495683, 0.06538301547324, |
253 | | 0.05956762170687, 0.05400808871425, 0.04870915012107, 0.04367435714993, |
254 | | 0.03890607899172, 0.03440550179663, 0.03017262174627, 0.02620622428513, |
255 | | 0.02250383492507, 0.01906161305732, 0.01587412848221, 0.01293388032354, |
256 | | 0.01023019677288, 0.00774641320626, 0.00545109736891, 0.00325868651263, |
257 | | }; |
258 | | |
259 | | static const float short_window2[192] = { |
260 | | 0.00018861094606, 0.00033433010202, 0.00050309624485, 0.00070306161748, |
261 | | 0.00093995174533, 0.00121913067128, 0.00154606505568, 0.00192647806126, |
262 | | 0.00236641248692, 0.00287225985240, 0.00345077377440, 0.00410907465023, |
263 | | 0.00485464855241, 0.00569534163219, 0.00663935063508, 0.00769520981249, |
264 | | 0.00887177436246, 0.01017820046395, 0.01162392194150, 0.01321862359335, |
265 | | 0.01497221122468, 0.01689477844427, 0.01899657030441, 0.02128794388846, |
266 | | 0.02377932597692, 0.02648116795039, 0.02940389811590, 0.03255787167130, |
267 | | 0.03595331854986, 0.03960028941437, 0.04350860009563, 0.04768777479454, |
268 | | 0.05214698838949, 0.05689500821121, 0.06194013566525, 0.06729014809766, |
269 | | 0.07295224131210, 0.07893297315602, 0.08523820859989, 0.09187306673620, |
270 | | 0.09884187012422, 0.10614809690222, 0.11379433608064, 0.12178224641797, |
271 | | 0.13011251926531, 0.13878484574660, 0.14779788861830, 0.15714925912610, |
272 | | 0.16683549914631, 0.17685206886673, 0.18719334022589, 0.19785259629099, |
273 | | 0.20882203671372, 0.22009278936030, 0.23165492816694, 0.24349749722585, |
274 | | 0.25560854105961, 0.26797514099368, 0.28058345748882, 0.29341877824732, |
275 | | 0.30646557185942, 0.31970754671026, 0.33312771482295, 0.34670846027024, |
276 | | |
277 | | 0.36043161174692, 0.37427851885723, 0.38823013163645, 0.40226708279486, |
278 | | 0.41636977214436, 0.43051845264462, 0.44469331748632, 0.45887458761470, |
279 | | 0.47304259908636, 0.48717788964798, 0.50126128392546, 0.51527397661778, |
280 | | 0.52919761310050, 0.54301436685998, 0.55670701320069, 0.57025899869448, |
281 | | 0.58365450587230, 0.59687851269542, 0.60991684638414, 0.62275623122793, |
282 | | 0.63538433005035, 0.64778977905593, 0.65996221584264, 0.67189230042379, |
283 | | 0.68357172916486, 0.69499324160511, 0.70615062019861, 0.71703868307548, |
284 | | 0.72765326998919, 0.73799122168099, 0.74805035295521, 0.75782941981995, |
285 | | 0.76732808110520, 0.77654685502339, 0.78548707118622, 0.79415081863423, |
286 | | 0.80254089047207, 0.81066072573188, 0.81851434910893, 0.82610630922734, |
287 | | 0.83344161609862, 0.84052567843230, 0.84736424144524, 0.85396332579459, |
288 | | 0.86032916822973, 0.86646816451999, 0.87238681516918, 0.87809167437532, |
289 | | 0.88358930263537, 0.88888622333073, 0.89398888356256, 0.89890361943564, |
290 | | 0.90363662591861, 0.90819393133744, 0.91258137648979, 0.91680459830070, |
291 | | 0.92086901787718, 0.92477983276087, 0.92854201312583, 0.93216030163834, |
292 | | 0.93563921662343, 0.93898305819384, 0.94219591693690, 0.94528168477979, |
293 | | |
294 | | 0.94823843319821, 0.95106834367330, 0.95377776558539, 0.95636718335775, |
295 | | 0.95883679961479, 0.96118650212341, 0.96341583179195, 0.96552395212906, |
296 | | 0.96750962060547, 0.96937116231768, 0.97110644638309, 0.97271286544154, |
297 | | 0.97418731862798, 0.97552619834964, 0.97672538116257, 0.97778022299974, |
298 | | 0.97868555895586, 0.97943570778357, 0.98002448120255, 0.98044519806866, |
299 | | 0.98069070339493, 0.98075339216123, 0.98062523779637, 0.98029782516478, |
300 | | 0.97976238784222, 0.97900984942031, 0.97803086854002, 0.97681588731895, |
301 | | 0.97535518280755, 0.97363892108474, 0.97165721358452, 0.96940017523145, |
302 | | 0.96685798395452, 0.96402094114589, 0.96087953263194, 0.95742448973047, |
303 | | 0.95364684997699, 0.94953801711660, 0.94508981997396, 0.94029456983253, |
304 | | 0.93514511597504, 0.92963489905951, 0.92375800202883, 0.91750919827624, |
305 | | 0.91088399681406, 0.90387868421832, 0.89649036314692, 0.88871698725397, |
306 | | 0.88055739234735, 0.87201132366062, 0.86307945913336, 0.85376342861693, |
307 | | 0.84406582894455, 0.83399023482637, 0.82354120554757, 0.81272428745995, |
308 | | 0.80154601230457, 0.79001389138101, 0.77813640562199, 0.76592299164227, |
309 | | 0.75338402384395, 0.74053079267526, 0.72737547915460, 0.71393112578527, |
310 | | }; |
311 | | |
312 | | static const float short_window3[64] = { |
313 | | 0.00326887936450, 0.00550242900936, 0.00786846643791, 0.01045683453520, |
314 | | 0.01330402120132, 0.01643221072863, 0.01985798040609, 0.02359509464766, |
315 | | 0.02765559221954, 0.03205025893128, 0.03678884369614, 0.04188015679495, |
316 | | 0.04733210987781, 0.05315172583924, 0.05934513287609, 0.06591755045290, |
317 | | 0.07287327156378, 0.08021564389822, 0.08794705152307, 0.09606889811179, |
318 | | 0.10458159240070, 0.11348453632940, 0.12277611617809, 0.13245369691511, |
319 | | 0.14251361989876, 0.15295120402567, 0.16376075037904, 0.17493555039885, |
320 | | 0.18646789757072, 0.19834910260891, 0.21056951208995, 0.22311853047787, |
321 | | 0.23598464546683, 0.24915545655419, 0.26261770674500, 0.27635731727778, |
322 | | 0.29035942525136, 0.30460842402318, 0.31908800624032, 0.33378120935681, |
323 | | 0.34867046348260, 0.36373764140285, 0.37896411059909, 0.39433078709788, |
324 | | 0.40981819096657, 0.42540650327031, 0.44107562429959, 0.45680523287270, |
325 | | 0.47257484651351, 0.48836388230077, 0.50415171818214, 0.51991775454258, |
326 | | 0.53564147581496, 0.55130251191887, 0.56688069931047, 0.58235614142007, |
327 | | 0.59770926827271, 0.61292089506118, 0.62797227945823, 0.64284517745255, |
328 | | 0.65752189749349, 0.67198535273209, 0.68621911114984, 0.70020744337099, |
329 | | }; |
330 | | |
331 | | static const uint8_t dc_code_tab[5] = { 0, 0, 0, 1, 1 }; |
332 | | |
333 | | static const uint8_t ht_code_tab[5] = { 0, 0, 1, 2, 2 }; |
334 | | |
335 | | static const uint8_t band_ofs_tab[3][4] = { |
336 | | { 12, 8, 4, 0 }, { 14, 10, 6, 0 }, { 12, 8, 4, 0 } |
337 | | }; |
338 | | |
339 | | static const uint8_t band_low_tab[3] = { 9, 17, 24 }; |
340 | | |
341 | | static const uint16_t fast_gain_tab[8] = { |
342 | | 128, 256, 384, 512, 640, 768, 896, 1024 |
343 | | }; |
344 | | |
345 | | static const uint16_t slow_decay_tab[2][2] = { { 27, -1 }, { 32, 21 } }; |
346 | | |
347 | | static const uint16_t misc_decay_tab[3][2][2] = { |
348 | | { { 354, -1 }, { 425, 425 } }, |
349 | | { { 266, -1 }, { 320, -1 } }, |
350 | | { { 213, -1 }, { 256, -1 } } |
351 | | }; |
352 | | |
353 | | static const uint16_t fast_decay_tab[3][2][2][50] = { |
354 | | {{{ |
355 | | 142, 142, 142, 142, 142, 142, 142, 142, 142, 142, |
356 | | 142, 142, 142, 142, 142, 142, 142, 142, 142, 142, |
357 | | 142, 142, 142, 142, 142, 142, 142, 142, 142, 142, |
358 | | 142, 142, 142, 142, 142, 142, 142, 142, |
359 | | }, { |
360 | | -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, |
361 | | -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, |
362 | | -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, |
363 | | -1, -1, -1, -1, -1, -1, -1, -1, |
364 | | }}, {{ |
365 | | 170, 170, 170, 170, 170, 170, 170, 170, 170, 170, |
366 | | 170, 170, 170, 170, 170, 170, 170, 170, 170, 170, |
367 | | 170, 170, 170, 170, 170, 170, 170, 170, 170, 170, |
368 | | 170, 170, 170, 170, 170, 170, 170, 170, |
369 | | }, { |
370 | | 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, |
371 | | 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, |
372 | | 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, |
373 | | 64, 64, 64, 64, 64, 64, 64, 64, |
374 | | }}}, {{{ |
375 | | 266, 266, 106, 106, 106, 106, 106, 106, 106, 106, |
376 | | 106, 106, 106, 106, 106, 106, 106, 106, 106, 106, |
377 | | 106, 106, 106, 106, 106, 106, 106, 106, 106, 106, |
378 | | 106, 106, 106, 106, 106, 106, 106, 106, 106, 106, |
379 | | 106, 106, 106, 106, |
380 | | }, { |
381 | | -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, |
382 | | -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, |
383 | | -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, |
384 | | -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, |
385 | | -1, -1, -1, -1, |
386 | | }}, {{ |
387 | | 319, 319, 128, 128, 128, 128, 128, 128, 128, 128, |
388 | | 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, |
389 | | 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, |
390 | | 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, |
391 | | 128, 128, 128, 128, |
392 | | }, { |
393 | | -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, |
394 | | -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, |
395 | | -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, |
396 | | -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, |
397 | | -1, -1, -1, -1, |
398 | | }}}, {{{ |
399 | | 106, 106, 106, 106, 106, 106, 106, 106, 106, 106, |
400 | | 106, 106, 106, 106, 106, 106, 106, 106, 106, 106, |
401 | | 106, 106, 106, 106, 106, 106, 106, 106, 106, 106, |
402 | | 106, 106, 106, 106, 106, 106, 106, 106, 106, 106, |
403 | | 106, 106, 106, 106, 106, 106, 106, 106, 106, 106, |
404 | | }, { |
405 | | -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, |
406 | | -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, |
407 | | -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, |
408 | | -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, |
409 | | -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, |
410 | | }}, {{ |
411 | | 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, |
412 | | 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, |
413 | | 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, |
414 | | 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, |
415 | | 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, |
416 | | }, { |
417 | | -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, |
418 | | -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, |
419 | | -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, |
420 | | -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, |
421 | | -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, |
422 | | }}} |
423 | | }; |
424 | | |
425 | | static const uint16_t fast_gain_adj_tab[3][2][62] = { |
426 | | {{ |
427 | | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, |
428 | | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, |
429 | | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, |
430 | | 0, 1, 2, 4, 7, 11, 16, 29, 44, 59, |
431 | | 76, 94, 116, 142, 179, 221, 252, 285, 312, 334, |
432 | | }, { |
433 | | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, |
434 | | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, |
435 | | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, |
436 | | 2, 5, 8, 10, 15, 28, 42, 57, 75, 93, |
437 | | 115, 140, 177, 219, 247, 280, 308, 330, 427, 533, |
438 | | }}, {{ |
439 | | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, |
440 | | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, |
441 | | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, |
442 | | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, |
443 | | 0, 2, 5, 8, 12, 21, 35, 51, 69, 89, |
444 | | 111, 138, 176, 220, 251, 284, 312, 334, |
445 | | }, { |
446 | | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, |
447 | | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, |
448 | | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, |
449 | | 0, 0, 0, 0, 0, 0, 0, 0, 0, 2, |
450 | | 5, 8, 11, 18, 33, 49, 65, 84, 106, 132, |
451 | | 168, 214, 245, 279, 308, 329, 427, 533, |
452 | | }}, {{ |
453 | | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, |
454 | | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, |
455 | | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, |
456 | | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, |
457 | | 0, 0, 0, 0, 0, 1, 4, 7, 10, 17, |
458 | | 31, 47, 65, 84, 107, 134, 171, 215, 250, 283, |
459 | | 312, 334, |
460 | | }, { |
461 | | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, |
462 | | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, |
463 | | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, |
464 | | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, |
465 | | 0, 0, 0, 0, 3, 6, 9, 13, 27, 43, |
466 | | 60, 79, 100, 126, 160, 207, 242, 276, 307, 329, |
467 | | 427, 533, |
468 | | }} |
469 | | }; |
470 | | |
471 | | static const uint16_t slow_gain_tab[3][2][50] = { |
472 | | {{ |
473 | | 3072, 3072, 3072, 3072, 3072, 3072, 1063, 1063, 1063, 1063, |
474 | | 1063, 1063, 1063, 1063, 1063, 1063, 1063, 1063, 1063, 1063, |
475 | | 1063, 1063, 1063, 1063, 1063, 1063, 1063, 1063, 1063, 1063, |
476 | | 1063, 1063, 1063, 1063, 1063, 1063, 1063, 1063, |
477 | | }, { |
478 | | 3072, 3072, 3072, 3072, 3072, 3072, 850, 850, 850, 850, |
479 | | 850, 850, 850, 850, 850, 850, 850, 850, 850, 850, |
480 | | 850, 850, 850, 850, 850, 850, 850, 850, 850, 850, |
481 | | 850, 850, 850, 850, 850, 850, 850, 850, |
482 | | }}, {{ |
483 | | 3072, 1212, 1212, 1212, 999, 999, 999, 999, 999, 999, |
484 | | 999, 999, 999, 999, 999, 999, 999, 999, 999, 999, |
485 | | 999, 999, 999, 999, 999, 999, 999, 999, 999, 999, |
486 | | 999, 999, 999, 999, 999, 999, 999, 999, 999, 999, |
487 | | 999, 999, 999, 999, |
488 | | }, { |
489 | | -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, |
490 | | -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, |
491 | | -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, |
492 | | -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, |
493 | | -1, -1, -1, -1, |
494 | | }}, {{ |
495 | | 3072, 3072, 3072, 3072, 3072, 3072, 3072, 3072, 3072, 3072, |
496 | | 999, 999, 999, 999, 999, 999, 999, 999, 999, 999, |
497 | | 999, 999, 999, 999, 999, 999, 999, 999, 999, 999, |
498 | | 999, 999, 999, 999, 999, 999, 999, 999, 999, 999, |
499 | | 999, 999, 999, 999, 999, 999, 999, 999, 999, 999, |
500 | | }, { |
501 | | -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, |
502 | | -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, |
503 | | -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, |
504 | | -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, |
505 | | -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, |
506 | | }} |
507 | | }; |
508 | | |
509 | | static const uint16_t hearing_thresh_tab[3][3][50] = { |
510 | | {{ |
511 | | 1403, 1141, 1000, 959, 948, 957, 946, 925, 899, 871, |
512 | | 843, 815, 789, 766, 745, 727, 705, 687, 681, 686, |
513 | | 701, 725, 768, 854, 940, 1018, 1075, 1103, 1111, 1106, |
514 | | 1098, 1105, 1142, 1237, 1419, 1721, 2169, 2805, |
515 | | }, { |
516 | | 1401, 1130, 995, 957, 947, 955, 941, 918, 890, 861, |
517 | | 831, 803, 777, 754, 734, 717, 698, 684, 682, 692, |
518 | | 712, 743, 798, 894, 976, 1045, 1091, 1109, 1110, 1102, |
519 | | 1098, 1116, 1174, 1300, 1526, 1884, 2401, 3072, |
520 | | }, { |
521 | | 1393, 1086, 974, 949, 957, 941, 913, 878, 843, 808, |
522 | | 777, 750, 727, 708, 695, 686, 681, 689, 714, 752, |
523 | | 811, 888, 971, 1044, 1087, 1108, 1110, 1102, 1098, 1115, |
524 | | 1172, 1290, 1489, 1812, 2293, 2964, 3072, 3072, |
525 | | }}, {{ |
526 | | 1412, 1343, 1141, 1047, 1000, 974, 959, 951, 948, 947, |
527 | | 957, 953, 946, 936, 925, 906, 878, 850, 822, 795, |
528 | | 771, 745, 719, 700, 687, 681, 685, 701, 733, 784, |
529 | | 885, 977, 1047, 1092, 1110, 1108, 1099, 1102, 1138, 1233, |
530 | | 1413, 1711, 2157, 2797, |
531 | | }, { |
532 | | 1412, 1336, 1130, 1040, 995, 970, 957, 950, 947, 947, |
533 | | 955, 950, 941, 930, 918, 897, 868, 838, 810, 783, |
534 | | 759, 734, 710, 693, 684, 681, 690, 712, 752, 823, |
535 | | 924, 1009, 1069, 1102, 1111, 1104, 1098, 1111, 1168, 1295, |
536 | | 1518, 1873, 2388, 3072, |
537 | | }, { |
538 | | 1411, 1293, 1086, 1009, 974, 957, 949, 947, 957, 951, |
539 | | 941, 928, 913, 896, 878, 852, 817, 785, 756, 732, |
540 | | 713, 695, 683, 682, 689, 710, 746, 811, 906, 992, |
541 | | 1061, 1099, 1111, 1106, 1098, 1107, 1155, 1266, 1471, 1799, |
542 | | 2277, 2945, 3072, 3072, |
543 | | }}, {{ |
544 | | 1431, 1412, 1403, 1379, 1343, 1293, 1229, 1180, 1125, 1075, |
545 | | 1040, 1014, 996, 979, 965, 957, 951, 948, 947, 957, |
546 | | 951, 940, 924, 903, 877, 846, 815, 785, 753, 725, |
547 | | 702, 686, 681, 689, 714, 760, 847, 947, 1028, 1083, |
548 | | 1108, 1109, 1101, 1100, 1132, 1222, 1402, 1705, 2160, 2803, |
549 | | }, { |
550 | | 1431, 1412, 1401, 1375, 1336, 1278, 1215, 1168, 1115, 1066, |
551 | | 1032, 1008, 991, 975, 962, 954, 950, 947, 947, 955, |
552 | | 948, 935, 916, 894, 866, 835, 803, 772, 742, 715, |
553 | | 695, 683, 683, 697, 729, 784, 887, 982, 1054, 1096, |
554 | | 1111, 1106, 1098, 1107, 1159, 1281, 1505, 1865, 2391, 3072, |
555 | | }, { |
556 | | 1427, 1411, 1393, 1353, 1293, 1215, 1160, 1118, 1072, 1031, |
557 | | 1003, 984, 971, 960, 952, 948, 947, 957, 952, 941, |
558 | | 924, 902, 876, 847, 815, 781, 750, 723, 700, 685, |
559 | | 681, 691, 719, 766, 858, 958, 1039, 1089, 1109, 1108, |
560 | | 1099, 1102, 1141, 1245, 1442, 1766, 2250, 2930, 3072, 3072, |
561 | | }} |
562 | | }; |
563 | | |
564 | | static const int16_t lwc_gain_tab[11][7] = { |
565 | | { -21, -197, -271, -466, 32767, 32767, 32767 }, |
566 | | { -197, -29, -244, -271, -540, 32767, 32767 }, |
567 | | { -271, -244, -29, -249, -271, -593, 32767 }, |
568 | | { -466, -271, -249, -29, -251, -271, -632 }, |
569 | | { -540, -271, -251, -29, -251, -271, -664 }, |
570 | | { -593, -271, -251, -29, -252, -271, -690 }, |
571 | | { -632, -271, -252, -29, -252, -271, -711 }, |
572 | | { -664, -271, -252, -29, -252, -271, -730 }, |
573 | | { -690, -271, -252, -29, -252, -271, -745 }, |
574 | | { -711, -271, -252, -29, -253, -271, -759 }, |
575 | | { -730, -271, -253, -29, -253, -271, -771 }, |
576 | | }; |
577 | | |
578 | | static const int16_t lwc_adj_tab[7] = { |
579 | | -192, -320, -448, -512, -448, -320, -192, |
580 | | }; |
581 | | |
582 | | static const uint8_t log_add_tab[212] = { |
583 | | 64, 63, 62, 61, 60, 59, 58, 57, 56, 55, 54, 53, 52, 52, 51, 50, |
584 | | 49, 48, 47, 47, 46, 45, 44, 44, 43, 42, 41, 41, 40, 39, 38, 38, |
585 | | 37, 36, 36, 35, 35, 34, 33, 33, 32, 32, 31, 30, 30, 29, 29, 28, |
586 | | 28, 27, 27, 26, 26, 25, 25, 24, 24, 23, 23, 22, 22, 21, 21, 21, |
587 | | 20, 20, 19, 19, 19, 18, 18, 18, 17, 17, 17, 16, 16, 16, 15, 15, |
588 | | 15, 14, 14, 14, 13, 13, 13, 13, 12, 12, 12, 12, 11, 11, 11, 11, |
589 | | 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, |
590 | | 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, |
591 | | 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, |
592 | | 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, |
593 | | 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, |
594 | | 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, |
595 | | 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, |
596 | | 1, 1, 0, 0, |
597 | | }; |
598 | | |
599 | | static const uint8_t bap_tab[64] = { |
600 | | 0, 1, 1, 1, 1, 1, 2, 2, 2, 2, 2, 3, 3, 3, 3, 4, |
601 | | 4, 4, 4, 5, 5, 5, 5, 6, 6, 6, 6, 7, 7, 7, 7, 8, |
602 | | 8, 8, 8, 9, 9, 9, 9, 10, 10, 10, 10, 11, 11, 11, 11, 12, |
603 | | 12, 12, 12, 13, 13, 13, 13, 14, 14, 14, 14, 15, 15, 15, 15, 15, |
604 | | }; |
605 | | |
606 | | static float mantissa_tab1[17][4]; |
607 | | static float mantissa_tab2[17][4]; |
608 | | static float mantissa_tab3[17][4]; |
609 | | static float exponent_tab[50]; |
610 | | static float gain_tab[1024]; |
611 | | |
612 | | DECLARE_ALIGNED(32, static float, window)[3712]; |
613 | | |
614 | | static int skip_input(DBEContext *s, int nb_words) |
615 | 640k | { |
616 | 640k | if (nb_words > s->input_size) { |
617 | 3.71k | av_log(s->avctx, AV_LOG_ERROR, "Packet too short\n"); |
618 | 3.71k | return AVERROR_INVALIDDATA; |
619 | 3.71k | } |
620 | | |
621 | 636k | s->input += nb_words * s->word_bytes; |
622 | 636k | s->input_size -= nb_words; |
623 | 636k | return 0; |
624 | 640k | } |
625 | | |
626 | | static int parse_key(DBEContext *s) |
627 | 628k | { |
628 | 628k | if (s->key_present) { |
629 | 1.10k | const uint8_t *key = s->input; |
630 | 1.10k | int ret = skip_input(s, 1); |
631 | 1.10k | if (ret < 0) |
632 | 511 | return ret; |
633 | 591 | return AV_RB24(key) >> 24 - s->word_bits; |
634 | 1.10k | } |
635 | 627k | return 0; |
636 | 628k | } |
637 | | |
638 | | static int parse_metadata_ext(DBEDecodeContext *s1) |
639 | 155k | { |
640 | 155k | DBEContext *s = &s1->dectx; |
641 | 155k | if (s->metadata.mtd_ext_size) |
642 | 641 | return skip_input(s, s->key_present + s->metadata.mtd_ext_size + 1); |
643 | 155k | return 0; |
644 | 155k | } |
645 | | |
646 | | static void unbias_exponents(DBEContext *s, DBEChannel *c, DBEGroup *g) |
647 | 16.7k | { |
648 | 16.7k | int mstr_exp[MAX_MSTR_EXP]; |
649 | 16.7k | int bias_exp[MAX_BIAS_EXP]; |
650 | 16.7k | int i, j, k; |
651 | | |
652 | 47.5k | for (i = 0; i < c->nb_mstr_exp; i++) |
653 | 30.7k | mstr_exp[i] = get_bits(&s->gb, 2) * 6; |
654 | | |
655 | 615k | for (i = 0; i < g->nb_exponent; i++) |
656 | 598k | bias_exp[i] = get_bits(&s->gb, 5); |
657 | | |
658 | 47.5k | for (i = k = 0; i < c->nb_mstr_exp; i++) |
659 | 629k | for (j = 0; j < g->nb_bias_exp[i]; j++, k++) |
660 | 598k | c->exponents[g->exp_ofs + k] = mstr_exp[i] + bias_exp[k]; |
661 | 16.7k | } |
662 | | |
663 | | static int parse_exponents(DBEContext *s, DBEChannel *c) |
664 | 11.9k | { |
665 | 11.9k | DBEGroup *p, *g; |
666 | 11.9k | int i; |
667 | | |
668 | 66.7k | for (i = 0, p = NULL, g = c->groups; i < c->nb_groups; i++, p = g, g++) { |
669 | 54.8k | c->exp_strategy[i] = !i || g->nb_exponent != p->nb_exponent || get_bits1(&s->gb); |
670 | 54.8k | if (c->exp_strategy[i]) { |
671 | 16.7k | unbias_exponents(s, c, g); |
672 | 38.1k | } else { |
673 | 38.1k | memcpy(c->exponents + g->exp_ofs, |
674 | 38.1k | c->exponents + p->exp_ofs, |
675 | 38.1k | g->nb_exponent * sizeof(c->exponents[0])); |
676 | 38.1k | } |
677 | 54.8k | } |
678 | | |
679 | 11.9k | return 0; |
680 | 11.9k | } |
681 | | |
682 | | static inline int log_add(int a, int b) |
683 | 1.68M | { |
684 | 1.68M | int c = FFABS(a - b) >> 1; |
685 | 1.68M | return FFMAX(a, b) + log_add_tab[FFMIN(c, 211)]; |
686 | 1.68M | } |
687 | | |
688 | | static void calc_lowcomp(int *msk_val) |
689 | 8.34k | { |
690 | 8.34k | int lwc_val[17] = { 0 }; |
691 | 8.34k | int i, j, k; |
692 | | |
693 | 100k | for (i = 0; i < 11; i++) { |
694 | 91.8k | int max_j = 0; |
695 | 91.8k | int max_v = INT_MIN; |
696 | 91.8k | int thr = 0; |
697 | | |
698 | 684k | for (j = FFMAX(i - 3, 0), k = 0; j <= i + 3; j++, k++) { |
699 | 592k | int v = msk_val[j] + lwc_gain_tab[i][k]; |
700 | 592k | if (v > max_v) { |
701 | 282k | max_j = j; |
702 | 282k | max_v = v; |
703 | 282k | } |
704 | 592k | thr = log_add(thr, v); |
705 | 592k | } |
706 | | |
707 | 91.8k | if (msk_val[i] < thr) { |
708 | 53.6k | for (j = FFMAX(max_j - 3, 0), |
709 | 53.6k | k = FFMAX(3 - max_j, 0); |
710 | 405k | j <= max_j + 3; j++, k++) |
711 | 351k | lwc_val[j] += lwc_adj_tab[k]; |
712 | 53.6k | } |
713 | 91.8k | } |
714 | | |
715 | 141k | for (i = 0; i < 16; i++) { |
716 | 133k | int v = FFMAX(lwc_val[i], -512); |
717 | 133k | msk_val[i] = FFMAX(msk_val[i] + v, 0); |
718 | 133k | } |
719 | 8.34k | } |
720 | | |
721 | | static void bit_allocate(int nb_exponent, int nb_code, int fr_code, |
722 | | int *exp, int *bap, |
723 | | int fg_spc, int fg_ofs, int msk_mod, int snr_ofs) |
724 | 12.1k | { |
725 | 12.1k | int msk_val[MAX_BIAS_EXP]; |
726 | 12.1k | int psd_val[MAX_BIAS_EXP]; |
727 | 12.1k | int fast_leak = 0; |
728 | 12.1k | int slow_leak = 0; |
729 | 12.1k | int dc_code = dc_code_tab[fr_code - 1]; |
730 | 12.1k | int ht_code = ht_code_tab[fr_code - 1]; |
731 | 12.1k | int fast_gain = fast_gain_tab[fg_ofs]; |
732 | 12.1k | int slow_decay = slow_decay_tab[dc_code][msk_mod]; |
733 | 12.1k | int misc_decay = misc_decay_tab[nb_code][dc_code][msk_mod]; |
734 | 12.1k | const uint16_t *slow_gain = slow_gain_tab[nb_code][msk_mod]; |
735 | 12.1k | const uint16_t *fast_decay = fast_decay_tab[nb_code][dc_code][msk_mod]; |
736 | 12.1k | const uint16_t *fast_gain_adj = fast_gain_adj_tab[nb_code][dc_code]; |
737 | 12.1k | const uint16_t *hearing_thresh = hearing_thresh_tab[nb_code][ht_code]; |
738 | 12.1k | int i; |
739 | | |
740 | 432k | for (i = 0; i < nb_exponent; i++) |
741 | 420k | psd_val[i] = (48 - exp[i]) * 64; |
742 | | |
743 | 12.1k | fast_gain_adj += band_ofs_tab[nb_code][fg_spc]; |
744 | 432k | for (i = 0; i < nb_exponent; i++) { |
745 | 420k | fast_leak = log_add(fast_leak - fast_decay[i], |
746 | 420k | psd_val[i] - fast_gain + fast_gain_adj[i]); |
747 | 420k | slow_leak = log_add(slow_leak - slow_decay, |
748 | 420k | psd_val[i] - slow_gain[i]); |
749 | 420k | msk_val[i] = FFMAX(fast_leak, slow_leak); |
750 | 420k | } |
751 | | |
752 | 12.1k | fast_leak = 0; |
753 | 267k | for (i = nb_exponent - 1; i > band_low_tab[nb_code]; i--) { |
754 | 255k | fast_leak = log_add(fast_leak - misc_decay, psd_val[i] - fast_gain); |
755 | 255k | msk_val[i] = FFMAX(msk_val[i], fast_leak); |
756 | 255k | } |
757 | | |
758 | 432k | for (i = 0; i < nb_exponent; i++) |
759 | 420k | msk_val[i] = FFMAX(msk_val[i], hearing_thresh[i]); |
760 | | |
761 | 12.1k | if (!nb_code) |
762 | 8.34k | calc_lowcomp(msk_val); |
763 | | |
764 | 432k | for (i = 0; i < nb_exponent; i++) { |
765 | 420k | int v = 16 * (snr_ofs - 64) + psd_val[i] - msk_val[i] >> 5; |
766 | 420k | bap[i] = bap_tab[av_clip_uintp2(v, 6)]; |
767 | 420k | } |
768 | 12.1k | } |
769 | | |
770 | | static int parse_bit_alloc(DBEDecodeContext *s1, DBEChannel *c) |
771 | 11.9k | { |
772 | 11.9k | DBEContext *s = &s1->dectx; |
773 | 11.9k | DBEGroup *p, *g; |
774 | 11.9k | int bap_strategy[MAX_GROUPS], fg_spc[MAX_GROUPS]; |
775 | 11.9k | int fg_ofs[MAX_GROUPS], msk_mod[MAX_GROUPS]; |
776 | 11.9k | int i, snr_ofs; |
777 | | |
778 | 66.7k | for (i = 0; i < c->nb_groups; i++) { |
779 | 54.8k | bap_strategy[i] = !i || get_bits1(&s->gb); |
780 | 54.8k | if (bap_strategy[i]) { |
781 | 19.3k | fg_spc[i] = get_bits(&s->gb, 2); |
782 | 19.3k | fg_ofs[i] = get_bits(&s->gb, 3); |
783 | 19.3k | msk_mod[i] = get_bits1(&s->gb); |
784 | 35.5k | } else { |
785 | 35.5k | fg_spc[i] = fg_spc[i - 1]; |
786 | 35.5k | fg_ofs[i] = fg_ofs[i - 1]; |
787 | 35.5k | msk_mod[i] = msk_mod[i - 1]; |
788 | 35.5k | } |
789 | 54.8k | } |
790 | | |
791 | 11.9k | if (get_bits1(&s->gb)) { |
792 | 886 | avpriv_report_missing_feature(s->avctx, "Delta bit allocation"); |
793 | 886 | return AVERROR_PATCHWELCOME; |
794 | 886 | } |
795 | | |
796 | 11.0k | snr_ofs = get_bits(&s->gb, 8); |
797 | 11.0k | if (!snr_ofs) { |
798 | 4.03k | memset(c->bap, 0, sizeof(c->bap)); |
799 | 4.03k | return 0; |
800 | 4.03k | } |
801 | | |
802 | 42.4k | for (i = 0, p = NULL, g = c->groups; i < c->nb_groups; i++, p = g, g++) { |
803 | 35.4k | if (c->exp_strategy[i] || bap_strategy[i]) { |
804 | 12.1k | bit_allocate(g->nb_exponent, g->imdct_idx, s->metadata.fr_code, |
805 | 12.1k | c->exponents + g->exp_ofs, c->bap + g->exp_ofs, |
806 | 12.1k | fg_spc[i], fg_ofs[i], msk_mod[i], snr_ofs); |
807 | 23.2k | } else { |
808 | 23.2k | memcpy(c->bap + g->exp_ofs, |
809 | 23.2k | c->bap + p->exp_ofs, |
810 | 23.2k | g->nb_exponent * sizeof(c->bap[0])); |
811 | 23.2k | } |
812 | 35.4k | } |
813 | | |
814 | 6.97k | return 0; |
815 | 11.0k | } |
816 | | |
817 | | static int parse_indices(DBEContext *s, DBEChannel *c) |
818 | 11.0k | { |
819 | 11.0k | DBEGroup *p, *g; |
820 | 11.0k | int i, j; |
821 | | |
822 | 60.5k | for (i = 0, p = NULL, g = c->groups; i < c->nb_groups; i++, p = g, g++) { |
823 | 50.0k | if (get_bits1(&s->gb)) { |
824 | 5.32k | int start = get_bits(&s->gb, 6); |
825 | | |
826 | 5.32k | if (start > g->nb_exponent) { |
827 | 532 | av_log(s->avctx, AV_LOG_ERROR, "Invalid start index\n"); |
828 | 532 | return AVERROR_INVALIDDATA; |
829 | 532 | } |
830 | | |
831 | 129k | for (j = 0; j < start; j++) |
832 | 124k | c->idx[g->exp_ofs + j] = 0; |
833 | | |
834 | 46.7k | for (; j < g->nb_exponent; j++) |
835 | 41.9k | c->idx[g->exp_ofs + j] = get_bits(&s->gb, 2); |
836 | 44.7k | } else if (i && g->nb_exponent == p->nb_exponent) { |
837 | 33.5k | memcpy(c->idx + g->exp_ofs, |
838 | 33.5k | c->idx + p->exp_ofs, |
839 | 33.5k | g->nb_exponent * sizeof(c->idx[0])); |
840 | 33.5k | } else { |
841 | 11.2k | memset(c->idx + g->exp_ofs, 0, g->nb_exponent * sizeof(c->idx[0])); |
842 | 11.2k | } |
843 | 50.0k | } |
844 | | |
845 | 10.4k | return 0; |
846 | 11.0k | } |
847 | | |
848 | | static int parse_mantissas(DBEContext *s, DBEChannel *c) |
849 | 10.4k | { |
850 | 10.4k | DBEGroup *g; |
851 | 10.4k | int i, j, k; |
852 | | |
853 | 59.7k | for (i = 0, g = c->groups; i < c->nb_groups; i++, g++) { |
854 | 49.2k | float *mnt = c->mantissas + g->mnt_ofs; |
855 | | |
856 | 1.78M | for (j = 0; j < g->nb_exponent; j++) { |
857 | 1.73M | int bap = c->bap[g->exp_ofs + j]; |
858 | 1.73M | int idx = c->idx[g->exp_ofs + j]; |
859 | 1.73M | int size1 = mantissa_size1[bap][idx]; |
860 | 1.73M | int count = g->nb_mantissa[j]; |
861 | 1.73M | float exp = exponent_tab[c->exponents[g->exp_ofs + j]]; |
862 | 1.73M | float scale = mantissa_tab1[size1][idx] * exp; |
863 | | |
864 | 1.73M | if (!size1) { |
865 | 970k | memset(mnt, 0, count * sizeof(*mnt)); |
866 | 970k | } else if (idx) { |
867 | 17.0k | int values[100]; |
868 | 17.0k | int escape = -(1 << size1 - 1); |
869 | | |
870 | 89.0k | for (k = 0; k < count; k++) |
871 | 71.9k | values[k] = get_sbits(&s->gb, size1); |
872 | | |
873 | 89.0k | for (k = 0; k < count; k++) { |
874 | 71.9k | if (values[k] != escape) { |
875 | 58.8k | mnt[k] = values[k] * scale; |
876 | 58.8k | } else { |
877 | 13.1k | int size2 = mantissa_size2[bap][idx]; |
878 | 13.1k | int value = get_sbits(&s->gb, size2); |
879 | 13.1k | float a = mantissa_tab2[size2][idx]; |
880 | 13.1k | float b = mantissa_tab3[size2][idx]; |
881 | 13.1k | if (value < 0) |
882 | 12.1k | mnt[k] = ((value + 1) * a - b) * exp; |
883 | 1.01k | else |
884 | 1.01k | mnt[k] = (value * a + b) * exp; |
885 | 13.1k | } |
886 | 71.9k | } |
887 | 745k | } else { |
888 | 3.05M | for (k = 0; k < count; k++) |
889 | 2.31M | mnt[k] = get_sbits(&s->gb, size1) * scale; |
890 | 745k | } |
891 | | |
892 | 1.73M | mnt += count; |
893 | 1.73M | } |
894 | | |
895 | 253k | for (; j < g->nb_exponent + c->bw_code; j++) { |
896 | 204k | memset(mnt, 0, g->nb_mantissa[j] * sizeof(*mnt)); |
897 | 204k | mnt += g->nb_mantissa[j]; |
898 | 204k | } |
899 | 49.2k | } |
900 | | |
901 | 10.4k | return 0; |
902 | 10.4k | } |
903 | | |
904 | | static int parse_channel(DBEDecodeContext *s1, int ch, int seg_id) |
905 | 14.3k | { |
906 | 14.3k | DBEContext *s = &s1->dectx; |
907 | 14.3k | DBEChannel *c = &s1->channels[seg_id][ch]; |
908 | 14.3k | int i, ret; |
909 | | |
910 | 14.3k | if (s->metadata.rev_id[ch] > 1) { |
911 | 2.01k | avpriv_report_missing_feature(s->avctx, "Encoder revision %d", s->metadata.rev_id[ch]); |
912 | 2.01k | return AVERROR_PATCHWELCOME; |
913 | 2.01k | } |
914 | | |
915 | 12.3k | if (ch == lfe_channel_tab[s->metadata.prog_conf]) { |
916 | 2.77k | c->gr_code = 3; |
917 | 2.77k | c->bw_code = 29; |
918 | 9.52k | } else { |
919 | 9.52k | c->gr_code = get_bits(&s->gb, 2); |
920 | 9.52k | c->bw_code = get_bits(&s->gb, 3); |
921 | 9.52k | if (c->gr_code == 3) { |
922 | 399 | av_log(s->avctx, AV_LOG_ERROR, "Invalid group type code\n"); |
923 | 399 | return AVERROR_INVALIDDATA; |
924 | 399 | } |
925 | 9.52k | } |
926 | | |
927 | 11.9k | c->nb_groups = nb_groups_tab[c->gr_code]; |
928 | 11.9k | c->nb_mstr_exp = nb_mstr_exp_tab[c->gr_code]; |
929 | | |
930 | 66.7k | for (i = 0; i < c->nb_groups; i++) { |
931 | 54.8k | c->groups[i] = frm_ofs_tab[seg_id][c->gr_code][i]; |
932 | 54.8k | if (c->nb_mstr_exp == 2) { |
933 | 52.1k | c->groups[i].nb_exponent -= c->bw_code; |
934 | 52.1k | c->groups[i].nb_bias_exp[1] -= c->bw_code; |
935 | 52.1k | } |
936 | 54.8k | } |
937 | | |
938 | 11.9k | if ((ret = parse_exponents(s, c)) < 0) |
939 | 0 | return ret; |
940 | 11.9k | if ((ret = parse_bit_alloc(s1, c)) < 0) |
941 | 886 | return ret; |
942 | 11.0k | if ((ret = parse_indices(s, c)) < 0) |
943 | 532 | return ret; |
944 | 10.4k | if ((ret = parse_mantissas(s, c)) < 0) |
945 | 0 | return ret; |
946 | | |
947 | 10.4k | if (get_bits_left(&s->gb) < 0) { |
948 | 5.63k | av_log(s->avctx, AV_LOG_ERROR, "Read past end of channel %d\n", ch); |
949 | 5.63k | return AVERROR_INVALIDDATA; |
950 | 5.63k | } |
951 | | |
952 | 4.84k | return 0; |
953 | 10.4k | } |
954 | | |
955 | | static int parse_audio(DBEDecodeContext *s1, int start, int end, int seg_id) |
956 | 628k | { |
957 | 628k | DBEContext *s = &s1->dectx; |
958 | 628k | int ch, ret, key; |
959 | | |
960 | 628k | if ((key = parse_key(s)) < 0) |
961 | 511 | return key; |
962 | | |
963 | 1.91M | for (ch = start; ch < end; ch++) { |
964 | 1.28M | if (!s->metadata.ch_size[ch]) { |
965 | 1.27M | s1->channels[seg_id][ch].nb_groups = 0; |
966 | 1.27M | continue; |
967 | 1.27M | } |
968 | 17.5k | ret = ff_dolby_e_convert_input(s, s->metadata.ch_size[ch], key); |
969 | 17.5k | if (ret < 0) |
970 | 3.28k | return ret; |
971 | 14.3k | if ((ret = parse_channel(s1, ch, seg_id)) < 0) { |
972 | 9.46k | if (s1->avctx->err_recognition & AV_EF_EXPLODE) |
973 | 560 | return ret; |
974 | 8.90k | s1->channels[seg_id][ch].nb_groups = 0; |
975 | 8.90k | } |
976 | 13.7k | if ((ret = skip_input(s, s->metadata.ch_size[ch])) < 0) |
977 | 0 | return ret; |
978 | 13.7k | } |
979 | | |
980 | 623k | return skip_input(s, 1); |
981 | 627k | } |
982 | | |
983 | | static int parse_meter(DBEDecodeContext *s1) |
984 | 153k | { |
985 | 153k | DBEContext *s = &s1->dectx; |
986 | 153k | if (s->metadata.meter_size) |
987 | 1.02k | return skip_input(s, s->key_present + s->metadata.meter_size + 1); |
988 | 152k | return 0; |
989 | 153k | } |
990 | | |
991 | | static void imdct_calc(DBEDecodeContext *s1, DBEGroup *g, float *result, float *values) |
992 | 12.6k | { |
993 | 12.6k | AVTXContext *imdct = s1->imdct[g->imdct_phs == 1][g->imdct_idx]; |
994 | 12.6k | av_tx_fn imdct_fn = s1->imdct_fn[g->imdct_phs == 1][g->imdct_idx]; |
995 | 12.6k | int n = 1 << imdct_bits_tab[g->imdct_idx]; |
996 | 12.6k | int n2 = n >> 1; |
997 | | |
998 | 12.6k | switch (g->imdct_phs) { |
999 | 2.40k | case 0: |
1000 | 2.40k | imdct_fn(imdct, result, values, sizeof(float)); |
1001 | 2.06M | for (int i = 0; i < n2; i++) |
1002 | 2.05M | result[n2 + i] = result[n2 - i - 1]; |
1003 | 2.40k | break; |
1004 | 8.26k | case 1: |
1005 | 8.26k | imdct_fn(imdct, result, values, sizeof(float)); |
1006 | 8.26k | break; |
1007 | 1.95k | case 2: |
1008 | 1.95k | imdct_fn(imdct, result + n2, values, sizeof(float)); |
1009 | 1.34M | for (int i = 0; i < n2; i++) |
1010 | 1.34M | result[i] = -result[n - i - 1]; |
1011 | 1.95k | break; |
1012 | 0 | default: |
1013 | 0 | av_assert0(0); |
1014 | 12.6k | } |
1015 | 12.6k | } |
1016 | | |
1017 | | static void transform(DBEDecodeContext *s1, DBEChannel *c, float *history, float *output) |
1018 | 1.25M | { |
1019 | 1.25M | LOCAL_ALIGNED_32(float, buffer, [2048]); |
1020 | 1.25M | LOCAL_ALIGNED_32(float, result, [1152]); |
1021 | 1.25M | DBEGroup *g; |
1022 | 1.25M | int i; |
1023 | | |
1024 | 1.25M | memset(result, 0, 1152 * sizeof(float)); |
1025 | 1.27M | for (i = 0, g = c->groups; i < c->nb_groups; i++, g++) { |
1026 | 12.6k | float *src = buffer + g->src_ofs; |
1027 | 12.6k | float *dst = result + g->dst_ofs; |
1028 | 12.6k | float *win = window + g->win_ofs; |
1029 | | |
1030 | 12.6k | imdct_calc(s1, g, buffer, c->mantissas + g->mnt_ofs); |
1031 | 12.6k | s1->fdsp->vector_fmul_add(dst, src, win, dst, g->win_len); |
1032 | 12.6k | } |
1033 | | |
1034 | 323M | for (i = 0; i < 256; i++) |
1035 | 322M | output[i] = history[i] + result[i]; |
1036 | 806M | for (i = 256; i < 896; i++) |
1037 | 805M | output[i] = result[i]; |
1038 | 323M | for (i = 0; i < 256; i++) |
1039 | 322M | history[i] = result[896 + i]; |
1040 | 1.25M | } |
1041 | | |
1042 | | static void apply_gain(DBEDecodeContext *s, int begin, int end, float *output) |
1043 | 629k | { |
1044 | 629k | if (begin == 960 && end == 960) |
1045 | 748 | return; |
1046 | | |
1047 | 628k | if (begin == end) { |
1048 | 238k | s->fdsp->vector_fmul_scalar(output, output, gain_tab[end], FRAME_SAMPLES); |
1049 | 389k | } else { |
1050 | 389k | float a = gain_tab[begin] * (1.0f / (FRAME_SAMPLES - 1)); |
1051 | 389k | float b = gain_tab[end ] * (1.0f / (FRAME_SAMPLES - 1)); |
1052 | 389k | int i; |
1053 | | |
1054 | 699M | for (i = 0; i < FRAME_SAMPLES; i++) |
1055 | 698M | output[i] *= a * (FRAME_SAMPLES - i - 1) + b * i; |
1056 | 389k | } |
1057 | 628k | } |
1058 | | |
1059 | | static int filter_frame(DBEDecodeContext *s, AVFrame *frame) |
1060 | 153k | { |
1061 | 153k | const DolbyEHeaderInfo *const metadata = &s->dectx.metadata; |
1062 | 153k | const uint8_t *reorder; |
1063 | 153k | int ch, ret; |
1064 | | |
1065 | 153k | if (metadata->nb_channels == 4) |
1066 | 149k | reorder = ch_reorder_4; |
1067 | 4.10k | else if (metadata->nb_channels == 6) |
1068 | 301 | reorder = ch_reorder_6; |
1069 | 3.79k | else if (metadata->nb_programs == 1 && metadata->output_channel_order == CHANNEL_ORDER_DEFAULT) |
1070 | 1.60k | reorder = ch_reorder_8; |
1071 | 2.19k | else |
1072 | 2.19k | reorder = ch_reorder_n; |
1073 | | |
1074 | 153k | frame->nb_samples = FRAME_SAMPLES; |
1075 | 153k | if ((ret = ff_get_buffer(s->avctx, frame, 0)) < 0) |
1076 | 0 | return ret; |
1077 | | |
1078 | 782k | for (ch = 0; ch < metadata->nb_channels; ch++) { |
1079 | 629k | float *output = (float *)frame->extended_data[reorder[ch]]; |
1080 | 629k | transform(s, &s->channels[0][ch], s->history[ch], output); |
1081 | 629k | transform(s, &s->channels[1][ch], s->history[ch], output + FRAME_SAMPLES / 2); |
1082 | 629k | apply_gain(s, metadata->begin_gain[ch], metadata->end_gain[ch], output); |
1083 | 629k | } |
1084 | | |
1085 | 153k | return 0; |
1086 | 153k | } |
1087 | | |
1088 | | static int dolby_e_decode_frame(AVCodecContext *avctx, AVFrame *frame, |
1089 | | int *got_frame_ptr, AVPacket *avpkt) |
1090 | 284k | { |
1091 | 284k | DBEDecodeContext *s1 = avctx->priv_data; |
1092 | 284k | DBEContext *s = &s1->dectx; |
1093 | 284k | int i, j, ret; |
1094 | | |
1095 | 284k | if ((ret = ff_dolby_e_parse_header(s, avpkt->data, avpkt->size)) < 0) |
1096 | 123k | return ret; |
1097 | | |
1098 | 160k | if (s->metadata.nb_programs > 1 && !s->metadata.multi_prog_warned) { |
1099 | 248 | av_log(avctx, AV_LOG_WARNING, "Stream has %d programs (configuration %d), " |
1100 | 248 | "channels will be output in native order.\n", |
1101 | 248 | s->metadata.nb_programs, s->metadata.prog_conf); |
1102 | 248 | s->metadata.multi_prog_warned = 1; |
1103 | 248 | } |
1104 | | |
1105 | 160k | av_channel_layout_uninit(&avctx->ch_layout); |
1106 | 160k | switch (s->metadata.nb_channels) { |
1107 | 155k | case 4: |
1108 | 155k | avctx->ch_layout = (AVChannelLayout)AV_CHANNEL_LAYOUT_4POINT0; |
1109 | 155k | break; |
1110 | 658 | case 6: |
1111 | 658 | avctx->ch_layout = (AVChannelLayout)AV_CHANNEL_LAYOUT_5POINT1; |
1112 | 658 | break; |
1113 | 5.05k | case 8: |
1114 | 5.05k | avctx->ch_layout = (AVChannelLayout)AV_CHANNEL_LAYOUT_7POINT1; |
1115 | 5.05k | break; |
1116 | 0 | default: |
1117 | 0 | avctx->ch_layout.order = AV_CHANNEL_ORDER_UNSPEC; |
1118 | 0 | avctx->ch_layout.nb_channels = s->metadata.nb_channels; |
1119 | 0 | break; |
1120 | 160k | } |
1121 | | |
1122 | 160k | avctx->sample_rate = s->metadata.sample_rate; |
1123 | 160k | avctx->sample_fmt = AV_SAMPLE_FMT_FLTP; |
1124 | | |
1125 | 160k | i = s->metadata.nb_channels / 2; |
1126 | 160k | j = s->metadata.nb_channels; |
1127 | 160k | if ((ret = parse_audio(s1, 0, i, 0)) < 0) |
1128 | 4.16k | return ret; |
1129 | 156k | if ((ret = parse_audio(s1, i, j, 0)) < 0) |
1130 | 895 | return ret; |
1131 | 155k | if ((ret = parse_metadata_ext(s1)) < 0) |
1132 | 265 | return ret; |
1133 | 155k | if ((ret = parse_audio(s1, 0, i, 1)) < 0) |
1134 | 743 | return ret; |
1135 | 154k | if ((ret = parse_audio(s1, i, j, 1)) < 0) |
1136 | 1.13k | return ret; |
1137 | 153k | if ((ret = parse_meter(s1)) < 0) |
1138 | 353 | return ret; |
1139 | 153k | if ((ret = filter_frame(s1, frame)) < 0) |
1140 | 0 | return ret; |
1141 | | |
1142 | 153k | *got_frame_ptr = 1; |
1143 | 153k | return avpkt->size; |
1144 | 153k | } |
1145 | | |
1146 | | static av_cold void dolby_e_flush(AVCodecContext *avctx) |
1147 | 112k | { |
1148 | 112k | DBEDecodeContext *s = avctx->priv_data; |
1149 | | |
1150 | 112k | memset(s->history, 0, sizeof(s->history)); |
1151 | 112k | } |
1152 | | |
1153 | | static av_cold int dolby_e_close(AVCodecContext *avctx) |
1154 | 2.29k | { |
1155 | 2.29k | DBEDecodeContext *s = avctx->priv_data; |
1156 | | |
1157 | 9.19k | for (int i = 0; i < 3; i++) { |
1158 | 6.89k | av_tx_uninit(&s->imdct[0][i]); |
1159 | 6.89k | av_tx_uninit(&s->imdct[1][i]); |
1160 | 6.89k | } |
1161 | | |
1162 | 2.29k | av_freep(&s->fdsp); |
1163 | 2.29k | return 0; |
1164 | 2.29k | } |
1165 | | |
1166 | | |
1167 | | static av_cold void init_tables(void) |
1168 | 1 | { |
1169 | 1 | int i, j; |
1170 | | |
1171 | 17 | for (i = 1; i < 17; i++) |
1172 | 16 | mantissa_tab1[i][0] = 1.0f / (1 << i - 1); |
1173 | | |
1174 | 15 | for (i = 2; i < 16; i++) { |
1175 | 14 | mantissa_tab1[i][1] = 1.0f / ((1 << i) - 1); |
1176 | 14 | mantissa_tab1[i][2] = 0.5f / ((1 << i) - 1); |
1177 | 14 | mantissa_tab1[i][3] = 0.25f / ((1 << i) - 1); |
1178 | 14 | } |
1179 | | |
1180 | 1 | mantissa_tab1[i][1] = 0.5f / (1 << 15); |
1181 | 1 | mantissa_tab1[i][2] = 0.75f / (1 << 15); |
1182 | 1 | mantissa_tab1[i][3] = 0.875f / (1 << 15); |
1183 | | |
1184 | 17 | for (i = 1; i < 17; i++) { |
1185 | 16 | mantissa_tab2[i][1] = mantissa_tab1[i][0] * 0.5f; |
1186 | 16 | mantissa_tab2[i][2] = mantissa_tab1[i][0] * 0.75f; |
1187 | 16 | mantissa_tab2[i][3] = mantissa_tab1[i][0] * 0.875f; |
1188 | 64 | for (j = 1; j < 4; j++) |
1189 | 48 | mantissa_tab3[i][j] = 1.0f / (1 << i) + 1.0f / (1 << j) - 1.0f / (1 << i + j); |
1190 | 16 | } |
1191 | | |
1192 | 1 | mantissa_tab3[1][3] = 0.6875f; |
1193 | | |
1194 | 26 | for (i = 0; i < 25; i++) { |
1195 | 25 | exponent_tab[i * 2 ] = 1.0f / (1 << i); |
1196 | 25 | exponent_tab[i * 2 + 1] = M_SQRT1_2 / (1 << i); |
1197 | 25 | } |
1198 | | |
1199 | 1.02k | for (i = 1; i < 1024; i++) |
1200 | 1.02k | gain_tab[i] = exp2f((i - 960) / 64.0f); |
1201 | | |
1202 | | // short 1 |
1203 | 1 | ff_kbd_window_init(window, 3.0f, 128); |
1204 | 129 | for (i = 0; i < 128; i++) |
1205 | 128 | window[128 + i] = window[127 - i]; |
1206 | | |
1207 | | // start |
1208 | 193 | for (i = 0; i < 192; i++) |
1209 | 192 | window[256 + i] = start_window[i]; |
1210 | | |
1211 | | // short 2 |
1212 | 193 | for (i = 0; i < 192; i++) |
1213 | 192 | window[448 + i] = short_window2[i]; |
1214 | 65 | for (i = 0; i < 64; i++) |
1215 | 64 | window[640 + i] = window[63 - i]; |
1216 | | |
1217 | | // short 3 |
1218 | 65 | for (i = 0; i < 64; i++) |
1219 | 64 | window[704 + i] = short_window3[i]; |
1220 | 193 | for (i = 0; i < 192; i++) |
1221 | 192 | window[768 + i] = window[64 + i]; |
1222 | | |
1223 | | // bridge |
1224 | 129 | for (i = 0; i < 128; i++) |
1225 | 128 | window[960 + i] = window[i]; |
1226 | 65 | for (i = 0; i < 64; i++) |
1227 | 64 | window[1088 + i] = 1.0f; |
1228 | | |
1229 | | // long |
1230 | 1 | ff_kbd_window_init(window + 1408, 3.0f, 256); |
1231 | 641 | for (i = 0; i < 640; i++) |
1232 | 640 | window[1664 + i] = 1.0f; |
1233 | 257 | for (i = 0; i < 256; i++) |
1234 | 256 | window[2304 + i] = window[1152 + i] = window[1663 - i]; |
1235 | | |
1236 | | // reverse start |
1237 | 193 | for (i = 0; i < 192; i++) |
1238 | 192 | window[2560 + i] = window[447 - i]; |
1239 | | |
1240 | | // reverse short 2 |
1241 | 257 | for (i = 0; i < 256; i++) |
1242 | 256 | window[2752 + i] = window[703 - i]; |
1243 | | |
1244 | | // reverse short 3 |
1245 | 257 | for (i = 0; i < 256; i++) |
1246 | 256 | window[3008 + i] = window[959 - i]; |
1247 | | |
1248 | | // reverse bridge |
1249 | 449 | for (i = 0; i < 448; i++) |
1250 | 448 | window[3264 + i] = window[1407 - i]; |
1251 | 1 | } |
1252 | | |
1253 | | static av_cold int dolby_e_init(AVCodecContext *avctx) |
1254 | 2.29k | { |
1255 | 2.29k | static AVOnce init_once = AV_ONCE_INIT; |
1256 | 2.29k | DBEDecodeContext *s = avctx->priv_data; |
1257 | 2.29k | float scale = 2.0f; |
1258 | 2.29k | int ret; |
1259 | | |
1260 | 2.29k | if (ff_thread_once(&init_once, init_tables)) |
1261 | 0 | return AVERROR_UNKNOWN; |
1262 | | |
1263 | 9.19k | for (int i = 0; i < 3; i++) { |
1264 | 6.89k | if ((ret = av_tx_init(&s->imdct[0][i], &s->imdct_fn[0][i], AV_TX_FLOAT_MDCT, |
1265 | 6.89k | 1, 1 << imdct_bits_tab[i] - 1, &scale, 0)) < 0) |
1266 | 0 | return ret; |
1267 | 6.89k | if ((ret = av_tx_init(&s->imdct[1][i], &s->imdct_fn[1][i], AV_TX_FLOAT_MDCT, |
1268 | 6.89k | 1, 1 << imdct_bits_tab[i] - 1, &scale, AV_TX_FULL_IMDCT)) < 0) |
1269 | 0 | return ret; |
1270 | 6.89k | } |
1271 | | |
1272 | 2.29k | if (!(s->fdsp = avpriv_float_dsp_alloc(0))) |
1273 | 0 | return AVERROR(ENOMEM); |
1274 | | |
1275 | 2.29k | s->dectx.metadata.multi_prog_warned = s->dectx.metadata.output_channel_order == CHANNEL_ORDER_CODED; |
1276 | 2.29k | s->dectx.avctx = s->avctx = avctx; |
1277 | 2.29k | return 0; |
1278 | 2.29k | } |
1279 | | |
1280 | | #define OFFSET(x) offsetof(DBEDecodeContext, x) |
1281 | | #define FLAGS (AV_OPT_FLAG_DECODING_PARAM | AV_OPT_FLAG_AUDIO_PARAM) |
1282 | | static const AVOption options[] = { |
1283 | | { "channel_order", "Order in which the channels are to be exported", |
1284 | | OFFSET(dectx.metadata.output_channel_order), AV_OPT_TYPE_INT, |
1285 | | { .i64 = CHANNEL_ORDER_DEFAULT }, 0, 1, FLAGS, .unit = "channel_order" }, |
1286 | | { "default", "normal libavcodec channel order", 0, AV_OPT_TYPE_CONST, |
1287 | | { .i64 = CHANNEL_ORDER_DEFAULT }, .flags = FLAGS, .unit = "channel_order" }, |
1288 | | { "coded", "order in which the channels are coded in the bitstream", |
1289 | | 0, AV_OPT_TYPE_CONST, { .i64 = CHANNEL_ORDER_CODED }, .flags = FLAGS, .unit = "channel_order" }, |
1290 | | |
1291 | | { NULL }, |
1292 | | }; |
1293 | | |
1294 | | static const AVClass dolby_e_decoder_class = { |
1295 | | .class_name = "Dolby E decoder", |
1296 | | .item_name = av_default_item_name, |
1297 | | .option = options, |
1298 | | .version = LIBAVUTIL_VERSION_INT, |
1299 | | }; |
1300 | | |
1301 | | const FFCodec ff_dolby_e_decoder = { |
1302 | | .p.name = "dolby_e", |
1303 | | CODEC_LONG_NAME("Dolby E"), |
1304 | | .p.type = AVMEDIA_TYPE_AUDIO, |
1305 | | .p.id = AV_CODEC_ID_DOLBY_E, |
1306 | | .priv_data_size = sizeof(DBEDecodeContext), |
1307 | | .p.priv_class = &dolby_e_decoder_class, |
1308 | | .init = dolby_e_init, |
1309 | | FF_CODEC_DECODE_CB(dolby_e_decode_frame), |
1310 | | .close = dolby_e_close, |
1311 | | .flush = dolby_e_flush, |
1312 | | .p.capabilities = AV_CODEC_CAP_DR1 | AV_CODEC_CAP_CHANNEL_CONF, |
1313 | | .caps_internal = FF_CODEC_CAP_INIT_CLEANUP, |
1314 | | }; |