FFmpeg
 All Data Structures Namespaces Files Functions Variables Typedefs Enumerations Enumerator Macros Groups Pages
dolby_e.h
Go to the documentation of this file.
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 #ifndef AVCODEC_DOLBY_E_H
22 #define AVCODEC_DOLBY_E_H
23 
24 #include "libavutil/float_dsp.h"
25 #include "libavutil/libm.h"
26 #include "libavutil/mem.h"
27 
28 #include "internal.h"
29 #include "get_bits.h"
30 #include "kbdwin.h"
31 #include "fft.h"
32 
33 #define FRAME_SAMPLES 1792
34 
35 #define MAX_PROG_CONF 23
36 #define MAX_PROGRAMS 8
37 #define MAX_CHANNELS 8
38 #define MAX_SEGMENTS 2
39 
40 #define MAX_GROUPS 8
41 #define MAX_EXPONENTS 304
42 #define MAX_MANTISSAS 1024
43 
44 #define MAX_MSTR_EXP 2
45 #define MAX_BIAS_EXP 50
46 
47 typedef struct DBEGroup {
48  uint8_t nb_exponent;
49  uint8_t nb_bias_exp[MAX_MSTR_EXP];
50  uint16_t exp_ofs;
51  uint16_t mnt_ofs;
52  const uint8_t *nb_mantissa;
53  uint8_t imdct_idx;
54  uint8_t imdct_phs;
55  uint16_t win_len;
56  uint16_t dst_ofs;
57  uint16_t win_ofs;
58  uint16_t src_ofs;
59 } DBEGroup;
60 
61 typedef struct DBEChannel {
62  int gr_code;
63  int bw_code;
64 
65  int nb_groups;
66  int nb_mstr_exp;
67  DBEGroup groups[MAX_GROUPS];
68 
69  int exp_strategy[MAX_GROUPS];
70  int exponents[MAX_EXPONENTS];
71  int bap[MAX_EXPONENTS];
72  int idx[MAX_EXPONENTS];
73 
74  DECLARE_ALIGNED(32, float, mantissas)[MAX_MANTISSAS];
75 } DBEChannel;
76 
77 typedef struct DBEContext {
78  AVCodecContext *avctx;
79  GetBitContext gb;
80 
81  uint8_t *input;
82  int input_size;
83 
84  int word_bits;
85  int word_bytes;
86  int key_present;
87 
88  int prog_conf;
89  int nb_channels;
90  int nb_programs;
91 
92  int fr_code;
93  int fr_code_orig;
94 
95  int ch_size[MAX_CHANNELS];
96  int mtd_ext_size;
97  int meter_size;
98 
99  int rev_id[MAX_CHANNELS];
100  int begin_gain[MAX_CHANNELS];
101  int end_gain[MAX_CHANNELS];
102 
103  int multi_prog_warned;
104 
105  DBEChannel channels[MAX_SEGMENTS][MAX_CHANNELS];
106 
107  DECLARE_ALIGNED(32, float, history)[MAX_CHANNELS][256];
108 
109  FFTContext imdct[3];
110  AVFloatDSPContext *fdsp;
111 
112  uint8_t buffer[1024 * 3 + AV_INPUT_BUFFER_PADDING_SIZE];
113 } DBEContext;
114 
115 static const uint8_t nb_programs_tab[MAX_PROG_CONF + 1] = {
116  2, 3, 2, 3, 4, 5, 4, 5, 6, 7, 8, 1, 2, 3, 3, 4, 5, 6, 1, 2, 3, 4, 1, 1
117 };
118 
119 static const uint8_t nb_channels_tab[MAX_PROG_CONF + 1] = {
120  8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 6, 6, 6, 6, 6, 6, 6, 4, 4, 4, 4, 8, 8
121 };
122 
123 static const int8_t lfe_channel_tab[MAX_PROG_CONF + 1] = {
124  5, 5, -1, -1, -1, -1, -1, -1, -1, -1, -1, 4,
125  -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 5, 5
126 };
127 
128 static const uint8_t ch_reorder_4[4] = { 0, 2, 1, 3 };
129 static const uint8_t ch_reorder_6[6] = { 0, 2, 4, 1, 3, 5 };
130 static const uint8_t ch_reorder_8[8] = { 0, 2, 6, 4, 1, 3, 7, 5 };
131 static const uint8_t ch_reorder_n[8] = { 0, 2, 4, 6, 1, 3, 5, 7 };
132 
133 static const uint16_t sample_rate_tab[16] = {
134  0, 42965, 43008, 44800, 53706, 53760
135 };
136 
137 static const uint8_t nb_groups_tab[4] = { 1, 8, 7, 1 };
138 
139 static const uint8_t nb_mstr_exp_tab[4] = { 2, 2, 2, 1 };
140 
141 static const uint8_t nb_mantissa_38[38] = {
142  1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
143  2, 2, 2, 2, 2, 2, 3, 3, 3, 4, 4, 4, 5, 5, 6, 6,
144  7, 8, 9, 10, 11, 12,
145 };
146 
147 static const uint8_t nb_mantissa_44[44] = {
148  1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 2,
149  2, 2, 2, 2, 2, 3, 3, 3, 3, 4, 4, 5, 5, 6, 7, 7,
150  8, 9, 10, 11, 12, 13, 15, 16, 18, 20, 22, 25,
151 };
152 
153 static const uint8_t nb_mantissa_50[50] = {
154  1, 1, 1, 1, 1, 1, 1, 1, 2, 2, 2, 2, 2, 3, 3, 3,
155  3, 4, 4, 5, 5, 6, 6, 7, 8, 9, 9, 10, 12, 13, 14, 16,
156  18, 19, 22, 24, 27, 29, 32, 36, 40, 44, 49, 54, 60, 66, 74, 82,
157  90, 100,
158 };
159 
160 static const uint8_t imdct_bits_tab[3] = { 8, 9, 11 };
161 
162 static const DBEGroup grp_tab_0[1] = {
163  { 50, { 27, 23 }, 0, 0, nb_mantissa_50, 2, 0, 1152, 0, 1408, 0 },
164 };
165 
166 static const DBEGroup grp_tab_1[8] = {
167  { 38, { 12, 26 }, 0, 0, nb_mantissa_38, 0, 0, 192, 0, 256, 0 },
168  { 38, { 12, 26 }, 38, 128, nb_mantissa_38, 0, 1, 256, 64, 448, 0 },
169  { 38, { 12, 26 }, 76, 256, nb_mantissa_38, 0, 1, 256, 192, 704, 0 },
170  { 38, { 12, 26 }, 114, 384, nb_mantissa_38, 0, 1, 256, 320, 0, 0 },
171  { 38, { 12, 26 }, 152, 512, nb_mantissa_38, 0, 1, 256, 448, 0, 0 },
172  { 38, { 12, 26 }, 190, 640, nb_mantissa_38, 0, 1, 256, 576, 0, 0 },
173  { 38, { 12, 26 }, 228, 768, nb_mantissa_38, 0, 1, 256, 704, 0, 0 },
174  { 38, { 12, 26 }, 266, 896, nb_mantissa_38, 0, 1, 256, 832, 0, 0 },
175 };
176 
177 static const DBEGroup grp_tab_2[7] = {
178  { 38, { 12, 26 }, 0, 0, nb_mantissa_38, 0, 0, 192, 0, 256, 0 },
179  { 38, { 12, 26 }, 38, 128, nb_mantissa_38, 0, 1, 256, 64, 448, 0 },
180  { 38, { 12, 26 }, 76, 256, nb_mantissa_38, 0, 1, 256, 192, 704, 0 },
181  { 38, { 12, 26 }, 114, 384, nb_mantissa_38, 0, 1, 256, 320, 0, 0 },
182  { 38, { 12, 26 }, 152, 512, nb_mantissa_38, 0, 1, 256, 448, 0, 0 },
183  { 38, { 12, 26 }, 190, 640, nb_mantissa_38, 0, 1, 256, 576, 0, 0 },
184  { 44, { 19, 25 }, 228, 768, nb_mantissa_44, 1, 1, 448, 704, 960, 64 },
185 };
186 
187 static const DBEGroup grp_tab_3[1] = {
188  { 21, { 21 }, 0, 0, nb_mantissa_50, 2, 0, 1152, 0, 1408, 0 },
189 };
190 
191 static const DBEGroup grp_tab_4[1] = {
192  { 50, { 27, 23 }, 0, 0, nb_mantissa_50, 2, 2, 1152, 0, 1408, 896 },
193 };
194 
195 static const DBEGroup grp_tab_5[8] = {
196  { 38, { 12, 26 }, 0, 0, nb_mantissa_38, 0, 1, 256, 64, 0, 0 },
197  { 38, { 12, 26 }, 38, 128, nb_mantissa_38, 0, 1, 256, 192, 0, 0 },
198  { 38, { 12, 26 }, 76, 256, nb_mantissa_38, 0, 1, 256, 320, 0, 0 },
199  { 38, { 12, 26 }, 114, 384, nb_mantissa_38, 0, 1, 256, 448, 0, 0 },
200  { 38, { 12, 26 }, 152, 512, nb_mantissa_38, 0, 1, 256, 576, 0, 0 },
201  { 38, { 12, 26 }, 190, 640, nb_mantissa_38, 0, 1, 256, 704, 3008, 0 },
202  { 38, { 12, 26 }, 228, 768, nb_mantissa_38, 0, 1, 256, 832, 2752, 0 },
203  { 38, { 12, 26 }, 266, 896, nb_mantissa_38, 0, 2, 192, 960, 2560, 64 },
204 };
205 
206 static const DBEGroup grp_tab_6[7] = {
207  { 44, { 19, 25 }, 0, 0, nb_mantissa_44, 1, 1, 448, 0, 3264, 0 },
208  { 38, { 12, 26 }, 44, 256, nb_mantissa_38, 0, 1, 256, 320, 0, 0 },
209  { 38, { 12, 26 }, 82, 384, nb_mantissa_38, 0, 1, 256, 448, 0, 0 },
210  { 38, { 12, 26 }, 120, 512, nb_mantissa_38, 0, 1, 256, 576, 0, 0 },
211  { 38, { 12, 26 }, 158, 640, nb_mantissa_38, 0, 1, 256, 704, 3008, 0 },
212  { 38, { 12, 26 }, 196, 768, nb_mantissa_38, 0, 1, 256, 832, 2752, 0 },
213  { 38, { 12, 26 }, 234, 896, nb_mantissa_38, 0, 2, 192, 960, 2560, 64 },
214 };
215 
216 static const DBEGroup grp_tab_7[1] = {
217  { 21, { 21 }, 0, 0, nb_mantissa_50, 2, 2, 1152, 0, 1408, 896 },
218 };
219 
220 static const DBEGroup *const frm_ofs_tab[2][4] = {
221  { grp_tab_0, grp_tab_1, grp_tab_2, grp_tab_3 },
222  { grp_tab_4, grp_tab_5, grp_tab_6, grp_tab_7 }
223 };
224 
225 static const uint8_t mantissa_size1[16][4] = {
226  { 0, 0, 0, 0 }, { 2, 1, 1, 1 }, { 3, 2, 1, 1 }, { 4, 3, 2, 1 },
227  { 5, 4, 3, 2 }, { 6, 5, 4, 3 }, { 7, 6, 5, 4 }, { 8, 7, 6, 5 },
228  { 9, 8, 7, 6 }, { 10, 9, 8, 7 }, { 11, 10, 9, 8 }, { 12, 11, 10, 9 },
229  { 13, 12, 11, 10 }, { 14, 13, 12, 11 }, { 15, 14, 13, 12 }, { 16, 15, 14, 13 },
230 };
231 
232 static const uint8_t mantissa_size2[16][4] = {
233  { 0, 0, 0, 0 }, { 2, 1, 2, 2 }, { 3, 2, 3, 3 }, { 4, 3, 4, 4 },
234  { 5, 4, 5, 5 }, { 6, 5, 6, 6 }, { 7, 6, 7, 7 }, { 8, 7, 8, 8 },
235  { 9, 8, 9, 9 }, { 10, 9, 10, 10 }, { 11, 10, 11, 11 }, { 12, 11, 12, 12 },
236  { 13, 12, 13, 13 }, { 14, 13, 14, 14 }, { 15, 14, 15, 15 }, { 16, 15, 16, 16 },
237 };
238 
239 static const float start_window[192] = {
240  0.00161569379826, 0.00185748233347, 0.00198562758548, 0.00207834078104,
241  0.00215717748523, 0.00223067096393, 0.00230299213147, 0.00237651215396,
242  0.00245275561606, 0.00253281402069, 0.00261754673613, 0.00270768786168,
243  0.00280390761895, 0.00290684998656, 0.00301715751161, 0.00313548872798,
244  0.00326253122934, 0.00339901215995, 0.00354570716636, 0.00370344845023,
245  0.00387313232586, 0.00405572653911, 0.00425227750970, 0.00446391759265,
246  0.00469187240551, 0.00493746822816, 0.00520213944619, 0.00548743597507,
247  0.00579503056737, 0.00612672586953, 0.00648446105606, 0.00687031782873,
248  0.00728652552677, 0.00773546505205, 0.00821967127415, 0.00874183354619,
249  0.00930479393832, 0.00991154278653, 0.01056521116692, 0.01126905994567,
250  0.01202646513050, 0.01284089936559, 0.01371590957417, 0.01465509096066,
251  0.01566205783408, 0.01674041199523, 0.01789370972358, 0.01912542867865,
252  0.02043893626265, 0.02183746113793, 0.02332406961796, 0.02490164852364,
253  0.02657289580178, 0.02834031974193, 0.03020624702903, 0.03217283918354,
254  0.03424211623810, 0.03641598586180, 0.03869627565015, 0.04108476601498,
255  0.04358322107390, 0.04619341515939, 0.04891715301882, 0.05175628239149,
256 
257  0.05471237327267, 0.05778734733755, 0.06098291402413, 0.06430101352084,
258  0.06774345212186, 0.07131188644726, 0.07500780649199, 0.07883251748595,
259  0.08278712056651, 0.08687249228061, 0.09108926295730, 0.09543779401074,
260  0.09991815425851, 0.10453009536427, 0.10927302653894, 0.11414598865987,
261  0.11914762799220, 0.12427616972097, 0.12952939152560, 0.13490459744934,
262  0.14039859233595, 0.14600765712201, 0.15172752528722, 0.15755336077528,
263  0.16347973770491, 0.16950062219342, 0.17560935661442, 0.18179864660619,
264  0.18806055113821, 0.19438647593012, 0.20076717050010, 0.20719272909882,
265  0.21365259576030, 0.22013557367283, 0.22662983904194, 0.23312295958328,
266  0.23960191774666, 0.24605313873388, 0.25246252333253, 0.25881548554631,
267  0.26509699495987, 0.27129162373316, 0.27738359807707, 0.28335685401987,
268  0.28919509723179, 0.29488186663467, 0.30040060148455, 0.30573471157819,
269  0.31086765019993, 0.31578298939317, 0.32046449711227, 0.32489621578468,
270  0.32906254179156, 0.33294830535654, 0.33653885031840, 0.33982011325336,
271  0.34277870140679, 0.34540196889300, 0.34767809062480, 0.34959613344194,
272  0.35114612391958, 0.35231911235422, 0.35310723244504, 0.35350375621308,
273 
274  0.35350314372945, 0.35310108725579, 0.35229454943591, 0.35108179521634,
275  0.34946241721522, 0.34743735430290, 0.34500890320420, 0.34218072298001,
276  0.33895783229541, 0.33534659943168, 0.33135472505060, 0.32699121776996,
277  0.32226636266000, 0.31719168282019, 0.31177989424432, 0.30604485422875,
278  0.30000150362379, 0.29366580327088, 0.28705466500775, 0.28018587766131,
279  0.27307802848095, 0.26575042049535, 0.25822298630189, 0.25051619882000,
280  0.24265097955783, 0.23464860495522, 0.22653061137548, 0.21831869932335,
281  0.21003463746705, 0.20170016703857, 0.19333690717811, 0.18496626177620,
282  0.17660932835062, 0.16828680947474, 0.16001892724986, 0.15182534128597,
283  0.14372507062477, 0.13573642000364, 0.12787691082233, 0.12016321713317,
284  0.11261110693234, 0.10523538898282, 0.09804986534955, 0.09106728977263,
285  0.08429933194438, 0.07775654768810, 0.07144835495683, 0.06538301547324,
286  0.05956762170687, 0.05400808871425, 0.04870915012107, 0.04367435714993,
287  0.03890607899172, 0.03440550179663, 0.03017262174627, 0.02620622428513,
288  0.02250383492507, 0.01906161305732, 0.01587412848221, 0.01293388032354,
289  0.01023019677288, 0.00774641320626, 0.00545109736891, 0.00325868651263,
290 };
291 
292 static const float short_window2[192] = {
293  0.00018861094606, 0.00033433010202, 0.00050309624485, 0.00070306161748,
294  0.00093995174533, 0.00121913067128, 0.00154606505568, 0.00192647806126,
295  0.00236641248692, 0.00287225985240, 0.00345077377440, 0.00410907465023,
296  0.00485464855241, 0.00569534163219, 0.00663935063508, 0.00769520981249,
297  0.00887177436246, 0.01017820046395, 0.01162392194150, 0.01321862359335,
298  0.01497221122468, 0.01689477844427, 0.01899657030441, 0.02128794388846,
299  0.02377932597692, 0.02648116795039, 0.02940389811590, 0.03255787167130,
300  0.03595331854986, 0.03960028941437, 0.04350860009563, 0.04768777479454,
301  0.05214698838949, 0.05689500821121, 0.06194013566525, 0.06729014809766,
302  0.07295224131210, 0.07893297315602, 0.08523820859989, 0.09187306673620,
303  0.09884187012422, 0.10614809690222, 0.11379433608064, 0.12178224641797,
304  0.13011251926531, 0.13878484574660, 0.14779788861830, 0.15714925912610,
305  0.16683549914631, 0.17685206886673, 0.18719334022589, 0.19785259629099,
306  0.20882203671372, 0.22009278936030, 0.23165492816694, 0.24349749722585,
307  0.25560854105961, 0.26797514099368, 0.28058345748882, 0.29341877824732,
308  0.30646557185942, 0.31970754671026, 0.33312771482295, 0.34670846027024,
309 
310  0.36043161174692, 0.37427851885723, 0.38823013163645, 0.40226708279486,
311  0.41636977214436, 0.43051845264462, 0.44469331748632, 0.45887458761470,
312  0.47304259908636, 0.48717788964798, 0.50126128392546, 0.51527397661778,
313  0.52919761310050, 0.54301436685998, 0.55670701320069, 0.57025899869448,
314  0.58365450587230, 0.59687851269542, 0.60991684638414, 0.62275623122793,
315  0.63538433005035, 0.64778977905593, 0.65996221584264, 0.67189230042379,
316  0.68357172916486, 0.69499324160511, 0.70615062019861, 0.71703868307548,
317  0.72765326998919, 0.73799122168099, 0.74805035295521, 0.75782941981995,
318  0.76732808110520, 0.77654685502339, 0.78548707118622, 0.79415081863423,
319  0.80254089047207, 0.81066072573188, 0.81851434910893, 0.82610630922734,
320  0.83344161609862, 0.84052567843230, 0.84736424144524, 0.85396332579459,
321  0.86032916822973, 0.86646816451999, 0.87238681516918, 0.87809167437532,
322  0.88358930263537, 0.88888622333073, 0.89398888356256, 0.89890361943564,
323  0.90363662591861, 0.90819393133744, 0.91258137648979, 0.91680459830070,
324  0.92086901787718, 0.92477983276087, 0.92854201312583, 0.93216030163834,
325  0.93563921662343, 0.93898305819384, 0.94219591693690, 0.94528168477979,
326 
327  0.94823843319821, 0.95106834367330, 0.95377776558539, 0.95636718335775,
328  0.95883679961479, 0.96118650212341, 0.96341583179195, 0.96552395212906,
329  0.96750962060547, 0.96937116231768, 0.97110644638309, 0.97271286544154,
330  0.97418731862798, 0.97552619834964, 0.97672538116257, 0.97778022299974,
331  0.97868555895586, 0.97943570778357, 0.98002448120255, 0.98044519806866,
332  0.98069070339493, 0.98075339216123, 0.98062523779637, 0.98029782516478,
333  0.97976238784222, 0.97900984942031, 0.97803086854002, 0.97681588731895,
334  0.97535518280755, 0.97363892108474, 0.97165721358452, 0.96940017523145,
335  0.96685798395452, 0.96402094114589, 0.96087953263194, 0.95742448973047,
336  0.95364684997699, 0.94953801711660, 0.94508981997396, 0.94029456983253,
337  0.93514511597504, 0.92963489905951, 0.92375800202883, 0.91750919827624,
338  0.91088399681406, 0.90387868421832, 0.89649036314692, 0.88871698725397,
339  0.88055739234735, 0.87201132366062, 0.86307945913336, 0.85376342861693,
340  0.84406582894455, 0.83399023482637, 0.82354120554757, 0.81272428745995,
341  0.80154601230457, 0.79001389138101, 0.77813640562199, 0.76592299164227,
342  0.75338402384395, 0.74053079267526, 0.72737547915460, 0.71393112578527,
343 };
344 
345 static const float short_window3[64] = {
346  0.00326887936450, 0.00550242900936, 0.00786846643791, 0.01045683453520,
347  0.01330402120132, 0.01643221072863, 0.01985798040609, 0.02359509464766,
348  0.02765559221954, 0.03205025893128, 0.03678884369614, 0.04188015679495,
349  0.04733210987781, 0.05315172583924, 0.05934513287609, 0.06591755045290,
350  0.07287327156378, 0.08021564389822, 0.08794705152307, 0.09606889811179,
351  0.10458159240070, 0.11348453632940, 0.12277611617809, 0.13245369691511,
352  0.14251361989876, 0.15295120402567, 0.16376075037904, 0.17493555039885,
353  0.18646789757072, 0.19834910260891, 0.21056951208995, 0.22311853047787,
354  0.23598464546683, 0.24915545655419, 0.26261770674500, 0.27635731727778,
355  0.29035942525136, 0.30460842402318, 0.31908800624032, 0.33378120935681,
356  0.34867046348260, 0.36373764140285, 0.37896411059909, 0.39433078709788,
357  0.40981819096657, 0.42540650327031, 0.44107562429959, 0.45680523287270,
358  0.47257484651351, 0.48836388230077, 0.50415171818214, 0.51991775454258,
359  0.53564147581496, 0.55130251191887, 0.56688069931047, 0.58235614142007,
360  0.59770926827271, 0.61292089506118, 0.62797227945823, 0.64284517745255,
361  0.65752189749349, 0.67198535273209, 0.68621911114984, 0.70020744337099,
362 };
363 
364 static const uint8_t dc_code_tab[5] = { 0, 0, 0, 1, 1 };
365 
366 static const uint8_t ht_code_tab[5] = { 0, 0, 1, 2, 2 };
367 
368 static const uint8_t band_ofs_tab[3][4] = {
369  { 12, 8, 4, 0 }, { 14, 10, 6, 0 }, { 12, 8, 4, 0 }
370 };
371 
372 static const uint8_t band_low_tab[3] = { 9, 17, 24 };
373 
374 static const uint16_t fast_gain_tab[8] = {
375  128, 256, 384, 512, 640, 768, 896, 1024
376 };
377 
378 static const uint16_t slow_decay_tab[2][2] = { { 27, -1 }, { 32, 21 } };
379 
380 static const uint16_t misc_decay_tab[3][2][2] = {
381  { { 354, -1 }, { 425, 425 } },
382  { { 266, -1 }, { 320, -1 } },
383  { { 213, -1 }, { 256, -1 } }
384 };
385 
386 static const uint16_t fast_decay_tab[3][2][2][50] = {
387  {{{
388  142, 142, 142, 142, 142, 142, 142, 142, 142, 142,
389  142, 142, 142, 142, 142, 142, 142, 142, 142, 142,
390  142, 142, 142, 142, 142, 142, 142, 142, 142, 142,
391  142, 142, 142, 142, 142, 142, 142, 142,
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,
397  }}, {{
398  170, 170, 170, 170, 170, 170, 170, 170, 170, 170,
399  170, 170, 170, 170, 170, 170, 170, 170, 170, 170,
400  170, 170, 170, 170, 170, 170, 170, 170, 170, 170,
401  170, 170, 170, 170, 170, 170, 170, 170,
402  }, {
403  64, 64, 64, 64, 64, 64, 64, 64, 64, 64,
404  64, 64, 64, 64, 64, 64, 64, 64, 64, 64,
405  64, 64, 64, 64, 64, 64, 64, 64, 64, 64,
406  64, 64, 64, 64, 64, 64, 64, 64,
407  }}}, {{{
408  266, 266, 106, 106, 106, 106, 106, 106, 106, 106,
409  106, 106, 106, 106, 106, 106, 106, 106, 106, 106,
410  106, 106, 106, 106, 106, 106, 106, 106, 106, 106,
411  106, 106, 106, 106, 106, 106, 106, 106, 106, 106,
412  106, 106, 106, 106,
413  }, {
414  -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
415  -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
416  -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
417  -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
418  -1, -1, -1, -1,
419  }}, {{
420  319, 319, 128, 128, 128, 128, 128, 128, 128, 128,
421  128, 128, 128, 128, 128, 128, 128, 128, 128, 128,
422  128, 128, 128, 128, 128, 128, 128, 128, 128, 128,
423  128, 128, 128, 128, 128, 128, 128, 128, 128, 128,
424  128, 128, 128, 128,
425  }, {
426  -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
427  -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
428  -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
429  -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
430  -1, -1, -1, -1,
431  }}}, {{{
432  106, 106, 106, 106, 106, 106, 106, 106, 106, 106,
433  106, 106, 106, 106, 106, 106, 106, 106, 106, 106,
434  106, 106, 106, 106, 106, 106, 106, 106, 106, 106,
435  106, 106, 106, 106, 106, 106, 106, 106, 106, 106,
436  106, 106, 106, 106, 106, 106, 106, 106, 106, 106,
437  }, {
438  -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
439  -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
440  -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
441  -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
442  -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
443  }}, {{
444  128, 128, 128, 128, 128, 128, 128, 128, 128, 128,
445  128, 128, 128, 128, 128, 128, 128, 128, 128, 128,
446  128, 128, 128, 128, 128, 128, 128, 128, 128, 128,
447  128, 128, 128, 128, 128, 128, 128, 128, 128, 128,
448  128, 128, 128, 128, 128, 128, 128, 128, 128, 128,
449  }, {
450  -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
451  -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
452  -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
453  -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
454  -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
455  }}}
456 };
457 
458 static const uint16_t fast_gain_adj_tab[3][2][62] = {
459  {{
460  0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
461  0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
462  0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
463  0, 1, 2, 4, 7, 11, 16, 29, 44, 59,
464  76, 94, 116, 142, 179, 221, 252, 285, 312, 334,
465  }, {
466  0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
467  0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
468  0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
469  2, 5, 8, 10, 15, 28, 42, 57, 75, 93,
470  115, 140, 177, 219, 247, 280, 308, 330, 427, 533,
471  }}, {{
472  0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
473  0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
474  0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
475  0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
476  0, 2, 5, 8, 12, 21, 35, 51, 69, 89,
477  111, 138, 176, 220, 251, 284, 312, 334,
478  }, {
479  0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
480  0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
481  0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
482  0, 0, 0, 0, 0, 0, 0, 0, 0, 2,
483  5, 8, 11, 18, 33, 49, 65, 84, 106, 132,
484  168, 214, 245, 279, 308, 329, 427, 533,
485  }}, {{
486  0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
487  0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
488  0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
489  0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
490  0, 0, 0, 0, 0, 1, 4, 7, 10, 17,
491  31, 47, 65, 84, 107, 134, 171, 215, 250, 283,
492  312, 334,
493  }, {
494  0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
495  0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
496  0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
497  0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
498  0, 0, 0, 0, 3, 6, 9, 13, 27, 43,
499  60, 79, 100, 126, 160, 207, 242, 276, 307, 329,
500  427, 533,
501  }}
502 };
503 
504 static const uint16_t slow_gain_tab[3][2][50] = {
505  {{
506  3072, 3072, 3072, 3072, 3072, 3072, 1063, 1063, 1063, 1063,
507  1063, 1063, 1063, 1063, 1063, 1063, 1063, 1063, 1063, 1063,
508  1063, 1063, 1063, 1063, 1063, 1063, 1063, 1063, 1063, 1063,
509  1063, 1063, 1063, 1063, 1063, 1063, 1063, 1063,
510  }, {
511  3072, 3072, 3072, 3072, 3072, 3072, 850, 850, 850, 850,
512  850, 850, 850, 850, 850, 850, 850, 850, 850, 850,
513  850, 850, 850, 850, 850, 850, 850, 850, 850, 850,
514  850, 850, 850, 850, 850, 850, 850, 850,
515  }}, {{
516  3072, 1212, 1212, 1212, 999, 999, 999, 999, 999, 999,
517  999, 999, 999, 999, 999, 999, 999, 999, 999, 999,
518  999, 999, 999, 999, 999, 999, 999, 999, 999, 999,
519  999, 999, 999, 999, 999, 999, 999, 999, 999, 999,
520  999, 999, 999, 999,
521  }, {
522  -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
523  -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
524  -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
525  -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
526  -1, -1, -1, -1,
527  }}, {{
528  3072, 3072, 3072, 3072, 3072, 3072, 3072, 3072, 3072, 3072,
529  999, 999, 999, 999, 999, 999, 999, 999, 999, 999,
530  999, 999, 999, 999, 999, 999, 999, 999, 999, 999,
531  999, 999, 999, 999, 999, 999, 999, 999, 999, 999,
532  999, 999, 999, 999, 999, 999, 999, 999, 999, 999,
533  }, {
534  -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
535  -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
536  -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
537  -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
538  -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
539  }}
540 };
541 
542 static const uint16_t hearing_thresh_tab[3][3][50] = {
543  {{
544  1403, 1141, 1000, 959, 948, 957, 946, 925, 899, 871,
545  843, 815, 789, 766, 745, 727, 705, 687, 681, 686,
546  701, 725, 768, 854, 940, 1018, 1075, 1103, 1111, 1106,
547  1098, 1105, 1142, 1237, 1419, 1721, 2169, 2805,
548  }, {
549  1401, 1130, 995, 957, 947, 955, 941, 918, 890, 861,
550  831, 803, 777, 754, 734, 717, 698, 684, 682, 692,
551  712, 743, 798, 894, 976, 1045, 1091, 1109, 1110, 1102,
552  1098, 1116, 1174, 1300, 1526, 1884, 2401, 3072,
553  }, {
554  1393, 1086, 974, 949, 957, 941, 913, 878, 843, 808,
555  777, 750, 727, 708, 695, 686, 681, 689, 714, 752,
556  811, 888, 971, 1044, 1087, 1108, 1110, 1102, 1098, 1115,
557  1172, 1290, 1489, 1812, 2293, 2964, 3072, 3072,
558  }}, {{
559  1412, 1343, 1141, 1047, 1000, 974, 959, 951, 948, 947,
560  957, 953, 946, 936, 925, 906, 878, 850, 822, 795,
561  771, 745, 719, 700, 687, 681, 685, 701, 733, 784,
562  885, 977, 1047, 1092, 1110, 1108, 1099, 1102, 1138, 1233,
563  1413, 1711, 2157, 2797,
564  }, {
565  1412, 1336, 1130, 1040, 995, 970, 957, 950, 947, 947,
566  955, 950, 941, 930, 918, 897, 868, 838, 810, 783,
567  759, 734, 710, 693, 684, 681, 690, 712, 752, 823,
568  924, 1009, 1069, 1102, 1111, 1104, 1098, 1111, 1168, 1295,
569  1518, 1873, 2388, 3072,
570  }, {
571  1411, 1293, 1086, 1009, 974, 957, 949, 947, 957, 951,
572  941, 928, 913, 896, 878, 852, 817, 785, 756, 732,
573  713, 695, 683, 682, 689, 710, 746, 811, 906, 992,
574  1061, 1099, 1111, 1106, 1098, 1107, 1155, 1266, 1471, 1799,
575  2277, 2945, 3072, 3072,
576  }}, {{
577  1431, 1412, 1403, 1379, 1343, 1293, 1229, 1180, 1125, 1075,
578  1040, 1014, 996, 979, 965, 957, 951, 948, 947, 957,
579  951, 940, 924, 903, 877, 846, 815, 785, 753, 725,
580  702, 686, 681, 689, 714, 760, 847, 947, 1028, 1083,
581  1108, 1109, 1101, 1100, 1132, 1222, 1402, 1705, 2160, 2803,
582  }, {
583  1431, 1412, 1401, 1375, 1336, 1278, 1215, 1168, 1115, 1066,
584  1032, 1008, 991, 975, 962, 954, 950, 947, 947, 955,
585  948, 935, 916, 894, 866, 835, 803, 772, 742, 715,
586  695, 683, 683, 697, 729, 784, 887, 982, 1054, 1096,
587  1111, 1106, 1098, 1107, 1159, 1281, 1505, 1865, 2391, 3072,
588  }, {
589  1427, 1411, 1393, 1353, 1293, 1215, 1160, 1118, 1072, 1031,
590  1003, 984, 971, 960, 952, 948, 947, 957, 952, 941,
591  924, 902, 876, 847, 815, 781, 750, 723, 700, 685,
592  681, 691, 719, 766, 858, 958, 1039, 1089, 1109, 1108,
593  1099, 1102, 1141, 1245, 1442, 1766, 2250, 2930, 3072, 3072,
594  }}
595 };
596 
597 static const int16_t lwc_gain_tab[11][7] = {
598  { -21, -197, -271, -466, 32767, 32767, 32767 },
599  { -197, -29, -244, -271, -540, 32767, 32767 },
600  { -271, -244, -29, -249, -271, -593, 32767 },
601  { -466, -271, -249, -29, -251, -271, -632 },
602  { -540, -271, -251, -29, -251, -271, -664 },
603  { -593, -271, -251, -29, -252, -271, -690 },
604  { -632, -271, -252, -29, -252, -271, -711 },
605  { -664, -271, -252, -29, -252, -271, -730 },
606  { -690, -271, -252, -29, -252, -271, -745 },
607  { -711, -271, -252, -29, -253, -271, -759 },
608  { -730, -271, -253, -29, -253, -271, -771 },
609 };
610 
611 static const int16_t lwc_adj_tab[7] = {
612  -192, -320, -448, -512, -448, -320, -192,
613 };
614 
615 static const uint8_t log_add_tab[212] = {
616  64, 63, 62, 61, 60, 59, 58, 57, 56, 55, 54, 53, 52, 52, 51, 50,
617  49, 48, 47, 47, 46, 45, 44, 44, 43, 42, 41, 41, 40, 39, 38, 38,
618  37, 36, 36, 35, 35, 34, 33, 33, 32, 32, 31, 30, 30, 29, 29, 28,
619  28, 27, 27, 26, 26, 25, 25, 24, 24, 23, 23, 22, 22, 21, 21, 21,
620  20, 20, 19, 19, 19, 18, 18, 18, 17, 17, 17, 16, 16, 16, 15, 15,
621  15, 14, 14, 14, 13, 13, 13, 13, 12, 12, 12, 12, 11, 11, 11, 11,
622  10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8,
623  7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5,
624  5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4,
625  4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2,
626  2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
627  2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
628  1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
629  1, 1, 0, 0,
630 };
631 
632 static const uint8_t bap_tab[64] = {
633  0, 1, 1, 1, 1, 1, 2, 2, 2, 2, 2, 3, 3, 3, 3, 4,
634  4, 4, 4, 5, 5, 5, 5, 6, 6, 6, 6, 7, 7, 7, 7, 8,
635  8, 8, 8, 9, 9, 9, 9, 10, 10, 10, 10, 11, 11, 11, 11, 12,
636  12, 12, 12, 13, 13, 13, 13, 14, 14, 14, 14, 15, 15, 15, 15, 15,
637 };
638 
639 static float mantissa_tab1[17][4];
640 static float mantissa_tab2[17][4];
641 static float mantissa_tab3[17][4];
642 static float exponent_tab[50];
643 static float gain_tab[1024];
644 
645 DECLARE_ALIGNED(32, static float, window)[3712];
646 
647 static av_cold void init_tables(void)
648 {
649  int i, j;
650 
651  for (i = 1; i < 17; i++)
652  mantissa_tab1[i][0] = 1.0f / (1 << i - 1);
653 
654  for (i = 2; i < 16; i++) {
655  mantissa_tab1[i][1] = 1.0f / ((1 << i) - 1);
656  mantissa_tab1[i][2] = 0.5f / ((1 << i) - 1);
657  mantissa_tab1[i][3] = 0.25f / ((1 << i) - 1);
658  }
659 
660  mantissa_tab1[i][1] = 0.5f / (1 << 15);
661  mantissa_tab1[i][2] = 0.75f / (1 << 15);
662  mantissa_tab1[i][3] = 0.875f / (1 << 15);
663 
664  for (i = 1; i < 17; i++) {
665  mantissa_tab2[i][1] = mantissa_tab1[i][0] * 0.5f;
666  mantissa_tab2[i][2] = mantissa_tab1[i][0] * 0.75f;
667  mantissa_tab2[i][3] = mantissa_tab1[i][0] * 0.875f;
668  for (j = 1; j < 4; j++)
669  mantissa_tab3[i][j] = 1.0f / (1 << i) + 1.0f / (1 << j) - 1.0f / (1 << i + j);
670  }
671 
672  mantissa_tab3[1][3] = 0.6875f;
673 
674  for (i = 0; i < 25; i++) {
675  exponent_tab[i * 2 ] = 1.0f / (1 << i);
676  exponent_tab[i * 2 + 1] = M_SQRT1_2 / (1 << i);
677  }
678 
679  for (i = 1; i < 1024; i++)
680  gain_tab[i] = exp2f((i - 960) / 64.0f);
681 
682  // short 1
683  ff_kbd_window_init(window, 3.0f, 128);
684  for (i = 0; i < 128; i++)
685  window[128 + i] = window[127 - i];
686 
687  // start
688  for (i = 0; i < 192; i++)
689  window[256 + i] = start_window[i];
690 
691  // short 2
692  for (i = 0; i < 192; i++)
693  window[448 + i] = short_window2[i];
694  for (i = 0; i < 64; i++)
695  window[640 + i] = window[63 - i];
696 
697  // short 3
698  for (i = 0; i < 64; i++)
699  window[704 + i] = short_window3[i];
700  for (i = 0; i < 192; i++)
701  window[768 + i] = window[64 + i];
702 
703  // bridge
704  for (i = 0; i < 128; i++)
705  window[960 + i] = window[i];
706  for (i = 0; i < 64; i++)
707  window[1088 + i] = 1.0f;
708 
709  // long
710  ff_kbd_window_init(window + 1408, 3.0f, 256);
711  for (i = 0; i < 640; i++)
712  window[1664 + i] = 1.0f;
713  for (i = 0; i < 256; i++)
714  window[2304 + i] = window[1152 + i] = window[1663 - i];
715 
716  // reverse start
717  for (i = 0; i < 192; i++)
718  window[2560 + i] = window[447 - i];
719 
720  // reverse short 2
721  for (i = 0; i < 256; i++)
722  window[2752 + i] = window[703 - i];
723 
724  // reverse short 3
725  for (i = 0; i < 256; i++)
726  window[3008 + i] = window[959 - i];
727 
728  // reverse bridge
729  for (i = 0; i < 448; i++)
730  window[3264 + i] = window[1407 - i];
731 }
732 
733 #endif
DBEGroup::src_ofs
uint16_t src_ofs
Definition: dolby_e.h:58
DBEContext::fr_code_orig
int fr_code_orig
Definition: dolby_e.h:93
DBEChannel::exp_strategy
int exp_strategy[MAX_GROUPS]
Definition: dolby_e.h:69
grp_tab_5
static const DBEGroup grp_tab_5[8]
Definition: dolby_e.h:195
mantissa_size2
static const uint8_t mantissa_size2[16][4]
Definition: dolby_e.h:232
nb_groups_tab
static const uint8_t nb_groups_tab[4]
Definition: dolby_e.h:137
mantissa_size1
static const uint8_t mantissa_size1[16][4]
Definition: dolby_e.h:225
mantissa_tab2
static float mantissa_tab2[17][4]
Definition: dolby_e.h:640
ff_kbd_window_init
av_cold void ff_kbd_window_init(float *window, float alpha, int n)
Generate a Kaiser-Bessel Derived Window.
Definition: kbdwin.c:26
DBEGroup::nb_bias_exp
uint8_t nb_bias_exp[MAX_MSTR_EXP]
Definition: dolby_e.h:49
mem.h
Memory handling functions.
DBEGroup::win_len
uint16_t win_len
Definition: dolby_e.h:55
DBEChannel::groups
DBEGroup groups[MAX_GROUPS]
Definition: dolby_e.h:67
fast_gain_adj_tab
static const uint16_t fast_gain_adj_tab[3][2][62]
Definition: dolby_e.h:458
grp_tab_2
static const DBEGroup grp_tab_2[7]
Definition: dolby_e.h:177
bap_tab
static const uint8_t bap_tab[64]
Definition: dolby_e.h:632
M_SQRT1_2
#define M_SQRT1_2
Definition: mathematics.h:58
float_dsp.h
grp_tab_4
static const DBEGroup grp_tab_4[1]
Definition: dolby_e.h:191
DBEGroup::win_ofs
uint16_t win_ofs
Definition: dolby_e.h:57
MAX_EXPONENTS
#define MAX_EXPONENTS
Definition: dolby_e.h:41
DBEChannel::nb_mstr_exp
int nb_mstr_exp
Definition: dolby_e.h:66
nb_mstr_exp_tab
static const uint8_t nb_mstr_exp_tab[4]
Definition: dolby_e.h:139
mantissa_tab3
static float mantissa_tab3[17][4]
Definition: dolby_e.h:641
grp_tab_6
static const DBEGroup grp_tab_6[7]
Definition: dolby_e.h:206
DBEGroup::imdct_phs
uint8_t imdct_phs
Definition: dolby_e.h:54
ch_reorder_4
static const uint8_t ch_reorder_4[4]
Definition: dolby_e.h:128
DBEContext::multi_prog_warned
int multi_prog_warned
Definition: dolby_e.h:103
DBEContext::avctx
AVCodecContext * avctx
Definition: dolby_e.h:78
uint8_t
uint8_t
Definition: audio_convert.c:194
log_add_tab
static const uint8_t log_add_tab[212]
Definition: dolby_e.h:615
av_cold
#define av_cold
Definition: attributes.h:82
grp_tab_7
static const DBEGroup grp_tab_7[1]
Definition: dolby_e.h:216
DBEChannel::idx
int idx[MAX_EXPONENTS]
Definition: dolby_e.h:72
DBEContext::gb
GetBitContext gb
Definition: dolby_e.h:79
dc_code_tab
static const uint8_t dc_code_tab[5]
Definition: dolby_e.h:364
DECLARE_ALIGNED
#define DECLARE_ALIGNED(n, t, v)
Declare a variable that is aligned in memory.
Definition: mem.h:104
lwc_gain_tab
static const int16_t lwc_gain_tab[11][7]
Definition: dolby_e.h:597
DBEGroup::mnt_ofs
uint16_t mnt_ofs
Definition: dolby_e.h:51
imdct_bits_tab
static const uint8_t imdct_bits_tab[3]
Definition: dolby_e.h:160
get_bits.h
bitstream reader API header.
DBEContext::ch_size
int ch_size[MAX_CHANNELS]
Definition: dolby_e.h:95
nb_mantissa_38
static const uint8_t nb_mantissa_38[38]
Definition: dolby_e.h:141
grp_tab_0
static const DBEGroup grp_tab_0[1]
Definition: dolby_e.h:162
DBEContext::key_present
int key_present
Definition: dolby_e.h:86
MAX_GROUPS
#define MAX_GROUPS
Definition: dolby_e.h:40
DBEContext::fr_code
int fr_code
Definition: dolby_e.h:92
ch_reorder_8
static const uint8_t ch_reorder_8[8]
Definition: dolby_e.h:130
DBEContext::fdsp
AVFloatDSPContext * fdsp
Definition: dolby_e.h:110
DBEChannel::gr_code
int gr_code
Definition: dolby_e.h:62
init_tables
static av_cold void init_tables(void)
Definition: dolby_e.h:647
DBEChannel::nb_groups
int nb_groups
Definition: dolby_e.h:65
MAX_PROG_CONF
#define MAX_PROG_CONF
Definition: dolby_e.h:35
band_low_tab
static const uint8_t band_low_tab[3]
Definition: dolby_e.h:372
DBEContext::end_gain
int end_gain[MAX_CHANNELS]
Definition: dolby_e.h:101
MAX_MSTR_EXP
#define MAX_MSTR_EXP
Definition: dolby_e.h:44
MAX_SEGMENTS
#define MAX_SEGMENTS
Definition: dolby_e.h:38
nb_mantissa_50
static const uint8_t nb_mantissa_50[50]
Definition: dolby_e.h:153
ch_reorder_6
static const uint8_t ch_reorder_6[6]
Definition: dolby_e.h:129
DBEContext::input
uint8_t * input
Definition: dolby_e.h:81
DBEContext::mtd_ext_size
int mtd_ext_size
Definition: dolby_e.h:96
DBEGroup::imdct_idx
uint8_t imdct_idx
Definition: dolby_e.h:53
sample_rate_tab
static const uint16_t sample_rate_tab[16]
Definition: dolby_e.h:133
DBEContext::prog_conf
int prog_conf
Definition: dolby_e.h:88
window
static float window[3712]
Definition: dolby_e.h:645
FFTContext
Definition: fft.h:88
nb_programs_tab
static const uint8_t nb_programs_tab[MAX_PROG_CONF+1]
Definition: dolby_e.h:115
DBEChannel::bap
int bap[MAX_EXPONENTS]
Definition: dolby_e.h:71
DBEContext::begin_gain
int begin_gain[MAX_CHANNELS]
Definition: dolby_e.h:100
DBEContext::meter_size
int meter_size
Definition: dolby_e.h:97
short_window2
static const float short_window2[192]
Definition: dolby_e.h:292
DBEContext::word_bytes
int word_bytes
Definition: dolby_e.h:85
DBEContext::history
float history[MAX_CHANNELS][256]
Definition: dolby_e.h:107
fast_gain_tab
static const uint16_t fast_gain_tab[8]
Definition: dolby_e.h:374
DBEContext::nb_programs
int nb_programs
Definition: dolby_e.h:90
DBEContext::input_size
int input_size
Definition: dolby_e.h:82
start_window
static const float start_window[192]
Definition: dolby_e.h:239
ch_reorder_n
static const uint8_t ch_reorder_n[8]
Definition: dolby_e.h:131
DBEChannel::mantissas
float mantissas[MAX_MANTISSAS]
Definition: dolby_e.h:74
hearing_thresh_tab
static const uint16_t hearing_thresh_tab[3][3][50]
Definition: dolby_e.h:542
exp2f
#define exp2f(x)
Definition: libm.h:293
DBEContext::nb_channels
int nb_channels
Definition: dolby_e.h:89
lfe_channel_tab
static const int8_t lfe_channel_tab[MAX_PROG_CONF+1]
Definition: dolby_e.h:123
AVCodecContext
main external API structure.
Definition: avcodec.h:1761
misc_decay_tab
static const uint16_t misc_decay_tab[3][2][2]
Definition: dolby_e.h:380
libm.h
Replacements for frequently missing libm functions.
nb_channels_tab
static const uint8_t nb_channels_tab[MAX_PROG_CONF+1]
Definition: dolby_e.h:119
band_ofs_tab
static const uint8_t band_ofs_tab[3][4]
Definition: dolby_e.h:368
DBEGroup::dst_ofs
uint16_t dst_ofs
Definition: dolby_e.h:56
grp_tab_3
static const DBEGroup grp_tab_3[1]
Definition: dolby_e.h:187
exponent_tab
static float exponent_tab[50]
Definition: dolby_e.h:642
nb_mantissa_44
static const uint8_t nb_mantissa_44[44]
Definition: dolby_e.h:147
mantissa_tab1
static float mantissa_tab1[17][4]
Definition: dolby_e.h:639
DBEContext::imdct
FFTContext imdct[3]
Definition: dolby_e.h:109
DBEGroup::nb_mantissa
const uint8_t * nb_mantissa
Definition: dolby_e.h:52
short_window3
static const float short_window3[64]
Definition: dolby_e.h:345
MAX_CHANNELS
#define MAX_CHANNELS
Definition: dolby_e.h:37
internal.h
common internal api header.
slow_decay_tab
static const uint16_t slow_decay_tab[2][2]
Definition: dolby_e.h:378
DBEContext::channels
DBEChannel channels[MAX_SEGMENTS][MAX_CHANNELS]
Definition: dolby_e.h:105
ht_code_tab
static const uint8_t ht_code_tab[5]
Definition: dolby_e.h:366
DBEContext::rev_id
int rev_id[MAX_CHANNELS]
Definition: dolby_e.h:99
gain_tab
static float gain_tab[1024]
Definition: dolby_e.h:643
frm_ofs_tab
static const DBEGroup *const frm_ofs_tab[2][4]
Definition: dolby_e.h:220
AV_INPUT_BUFFER_PADDING_SIZE
#define AV_INPUT_BUFFER_PADDING_SIZE
Required number of additionally allocated bytes at the end of the input bitstream for decoding...
Definition: avcodec.h:777
MAX_MANTISSAS
#define MAX_MANTISSAS
Definition: dolby_e.h:42
fast_decay_tab
static const uint16_t fast_decay_tab[3][2][2][50]
Definition: dolby_e.h:386
DBEChannel::exponents
int exponents[MAX_EXPONENTS]
Definition: dolby_e.h:70
DBEGroup::exp_ofs
uint16_t exp_ofs
Definition: dolby_e.h:50
grp_tab_1
static const DBEGroup grp_tab_1[8]
Definition: dolby_e.h:166
DBEGroup::nb_exponent
uint8_t nb_exponent
Definition: dolby_e.h:48
lwc_adj_tab
static const int16_t lwc_adj_tab[7]
Definition: dolby_e.h:611
DBEChannel::bw_code
int bw_code
Definition: dolby_e.h:63
slow_gain_tab
static const uint16_t slow_gain_tab[3][2][50]
Definition: dolby_e.h:504
DBEContext::word_bits
int word_bits
Definition: dolby_e.h:84
buffer
GLuint buffer
Definition: opengl_enc.c:102
Generated on Fri Jan 12 2018 01:47:40 for FFmpeg by   doxygen 1.8.6