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Give better name to Inverse_Table_6_9
[mplayer/glamo.git] / libfaad2 / specrec.c
blob1119dd3b535a64d1ae43bdb2f8fc7d0ddf12e959
1 /*
2 ** FAAD2 - Freeware Advanced Audio (AAC) Decoder including SBR decoding
3 ** Copyright (C) 2003-2004 M. Bakker, Ahead Software AG, http://www.nero.com
4 **
5 ** This program is free software; you can redistribute it and/or modify
6 ** it under the terms of the GNU General Public License as published by
7 ** the Free Software Foundation; either version 2 of the License, or
8 ** (at your option) any later version.
9 **
10 ** This program is distributed in the hope that it will be useful,
11 ** but WITHOUT ANY WARRANTY; without even the implied warranty of
12 ** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 ** GNU General Public License for more details.
14 **
15 ** You should have received a copy of the GNU General Public License
16 ** along with this program; if not, write to the Free Software
17 ** Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
18 **
19 ** Any non-GPL usage of this software or parts of this software is strictly
20 ** forbidden.
21 **
22 ** Initially modified for use with MPlayer on 2006/04/18
23 ** $Id: specrec.c,v 1.56 2004/09/08 09:43:11 gcp Exp $
24 ** detailed changelog at http://svn.mplayerhq.hu/mplayer/trunk/
25 ** local_changes.diff contains the exact changes to this file.
26 **/
27
28 /*
29 Spectral reconstruction:
30 - grouping/sectioning
31 - inverse quantization
32 - applying scalefactors
33 */
34
35 #include "common.h"
36 #include "structs.h"
37
38 #include <string.h>
39 #include <stdlib.h>
40 #include "specrec.h"
41 #include "filtbank.h"
42 #include "syntax.h"
43 #include "iq_table.h"
44 #include "ms.h"
45 #include "is.h"
46 #include "pns.h"
47 #include "tns.h"
48 #include "drc.h"
49 #include "lt_predict.h"
50 #include "ic_predict.h"
51 #ifdef SSR_DEC
52 #include "ssr.h"
53 #include "ssr_fb.h"
54 #endif
55
56
57 /* static function declarations */
58 static uint8_t quant_to_spec(NeAACDecHandle hDecoder,
59 ic_stream *ics, int16_t *quant_data,
60 real_t *spec_data, uint16_t frame_len);
61
62
63 #ifdef LD_DEC
64 ALIGN static const uint8_t num_swb_512_window[] =
65 {
66 0, 0, 0, 36, 36, 37, 31, 31, 0, 0, 0, 0
67 };
68 ALIGN static const uint8_t num_swb_480_window[] =
69 {
70 0, 0, 0, 35, 35, 37, 30, 30, 0, 0, 0, 0
71 };
72 #endif
73
74 ALIGN static const uint8_t num_swb_960_window[] =
75 {
76 40, 40, 45, 49, 49, 49, 46, 46, 42, 42, 42, 40
77 };
78
79 ALIGN static const uint8_t num_swb_1024_window[] =
80 {
81 41, 41, 47, 49, 49, 51, 47, 47, 43, 43, 43, 40
82 };
83
84 ALIGN static const uint8_t num_swb_128_window[] =
85 {
86 12, 12, 12, 14, 14, 14, 15, 15, 15, 15, 15, 15
87 };
88
89 ALIGN static const uint16_t swb_offset_1024_96[] =
90 {
91 0, 4, 8, 12, 16, 20, 24, 28, 32, 36, 40, 44, 48, 52, 56,
92 64, 72, 80, 88, 96, 108, 120, 132, 144, 156, 172, 188, 212, 240,
93 276, 320, 384, 448, 512, 576, 640, 704, 768, 832, 896, 960, 1024
94 };
95
96 ALIGN static const uint16_t swb_offset_128_96[] =
97 {
98 0, 4, 8, 12, 16, 20, 24, 32, 40, 48, 64, 92, 128
99 };
100
101 ALIGN static const uint16_t swb_offset_1024_64[] =
102 {
103 0, 4, 8, 12, 16, 20, 24, 28, 32, 36, 40, 44, 48, 52, 56,
104 64, 72, 80, 88, 100, 112, 124, 140, 156, 172, 192, 216, 240, 268,
105 304, 344, 384, 424, 464, 504, 544, 584, 624, 664, 704, 744, 784, 824,
106 864, 904, 944, 984, 1024
107 };
108
109 ALIGN static const uint16_t swb_offset_128_64[] =
110 {
111 0, 4, 8, 12, 16, 20, 24, 32, 40, 48, 64, 92, 128
112 };
113
114 ALIGN static const uint16_t swb_offset_1024_48[] =
115 {
116 0, 4, 8, 12, 16, 20, 24, 28, 32, 36, 40, 48, 56, 64, 72,
117 80, 88, 96, 108, 120, 132, 144, 160, 176, 196, 216, 240, 264, 292,
118 320, 352, 384, 416, 448, 480, 512, 544, 576, 608, 640, 672, 704, 736,
119 768, 800, 832, 864, 896, 928, 1024
120 };
121
122 #ifdef LD_DEC
123 ALIGN static const uint16_t swb_offset_512_48[] =
124 {
125 0, 4, 8, 12, 16, 20, 24, 28, 32, 36, 40, 44, 48, 52, 56, 60, 68, 76, 84,
126 92, 100, 112, 124, 136, 148, 164, 184, 208, 236, 268, 300, 332, 364, 396,
127 428, 460, 512
128 };
129
130 ALIGN static const uint16_t swb_offset_480_48[] =
131 {
132 0, 4, 8, 12, 16, 20, 24, 28, 32, 36, 40, 44, 48, 52, 56, 64, 72 ,80 ,88,
133 96, 108, 120, 132, 144, 156, 172, 188, 212, 240, 272, 304, 336, 368, 400,
134 432, 480
135 };
136 #endif
137
138 ALIGN static const uint16_t swb_offset_128_48[] =
139 {
140 0, 4, 8, 12, 16, 20, 28, 36, 44, 56, 68, 80, 96, 112, 128
141 };
142
143 ALIGN static const uint16_t swb_offset_1024_32[] =
144 {
145 0, 4, 8, 12, 16, 20, 24, 28, 32, 36, 40, 48, 56, 64, 72,
146 80, 88, 96, 108, 120, 132, 144, 160, 176, 196, 216, 240, 264, 292,
147 320, 352, 384, 416, 448, 480, 512, 544, 576, 608, 640, 672, 704, 736,
148 768, 800, 832, 864, 896, 928, 960, 992, 1024
149 };
150
151 #ifdef LD_DEC
152 ALIGN static const uint16_t swb_offset_512_32[] =
153 {
154 0, 4, 8, 12, 16, 20, 24, 28, 32, 36, 40, 44, 48, 52, 56, 64, 72, 80,
155 88, 96, 108, 120, 132, 144, 160, 176, 192, 212, 236, 260, 288, 320, 352,
156 384, 416, 448, 480, 512
157 };
158
159 ALIGN static const uint16_t swb_offset_480_32[] =
160 {
161 0, 4, 8, 12, 16, 20, 24, 28, 32, 36, 40, 44, 48, 52, 56, 60, 64, 72, 80,
162 88, 96, 104, 112, 124, 136, 148, 164, 180, 200, 224, 256, 288, 320, 352,
163 384, 416, 448, 480
164 };
165 #endif
166
167 ALIGN static const uint16_t swb_offset_1024_24[] =
168 {
169 0, 4, 8, 12, 16, 20, 24, 28, 32, 36, 40, 44, 52, 60, 68,
170 76, 84, 92, 100, 108, 116, 124, 136, 148, 160, 172, 188, 204, 220,
171 240, 260, 284, 308, 336, 364, 396, 432, 468, 508, 552, 600, 652, 704,
172 768, 832, 896, 960, 1024
173 };
174
175 #ifdef LD_DEC
176 ALIGN static const uint16_t swb_offset_512_24[] =
177 {
178 0, 4, 8, 12, 16, 20, 24, 28, 32, 36, 40, 44, 52, 60, 68,
179 80, 92, 104, 120, 140, 164, 192, 224, 256, 288, 320, 352, 384, 416,
180 448, 480, 512
181 };
182
183 ALIGN static const uint16_t swb_offset_480_24[] =
184 {
185 0, 4, 8, 12, 16, 20, 24, 28, 32, 36, 40, 44, 52, 60, 68, 80, 92, 104, 120,
186 140, 164, 192, 224, 256, 288, 320, 352, 384, 416, 448, 480
187 };
188 #endif
189
190 ALIGN static const uint16_t swb_offset_128_24[] =
191 {
192 0, 4, 8, 12, 16, 20, 24, 28, 36, 44, 52, 64, 76, 92, 108, 128
193 };
194
195 ALIGN static const uint16_t swb_offset_1024_16[] =
196 {
197 0, 8, 16, 24, 32, 40, 48, 56, 64, 72, 80, 88, 100, 112, 124,
198 136, 148, 160, 172, 184, 196, 212, 228, 244, 260, 280, 300, 320, 344,
199 368, 396, 424, 456, 492, 532, 572, 616, 664, 716, 772, 832, 896, 960, 1024
200 };
201
202 ALIGN static const uint16_t swb_offset_128_16[] =
203 {
204 0, 4, 8, 12, 16, 20, 24, 28, 32, 40, 48, 60, 72, 88, 108, 128
205 };
206
207 ALIGN static const uint16_t swb_offset_1024_8[] =
208 {
209 0, 12, 24, 36, 48, 60, 72, 84, 96, 108, 120, 132, 144, 156, 172,
210 188, 204, 220, 236, 252, 268, 288, 308, 328, 348, 372, 396, 420, 448,
211 476, 508, 544, 580, 620, 664, 712, 764, 820, 880, 944, 1024
212 };
213
214 ALIGN static const uint16_t swb_offset_128_8[] =
215 {
216 0, 4, 8, 12, 16, 20, 24, 28, 36, 44, 52, 60, 72, 88, 108, 128
217 };
218
219 ALIGN static const uint16_t *swb_offset_1024_window[] =
220 {
221 swb_offset_1024_96, /* 96000 */
222 swb_offset_1024_96, /* 88200 */
223 swb_offset_1024_64, /* 64000 */
224 swb_offset_1024_48, /* 48000 */
225 swb_offset_1024_48, /* 44100 */
226 swb_offset_1024_32, /* 32000 */
227 swb_offset_1024_24, /* 24000 */
228 swb_offset_1024_24, /* 22050 */
229 swb_offset_1024_16, /* 16000 */
230 swb_offset_1024_16, /* 12000 */
231 swb_offset_1024_16, /* 11025 */
232 swb_offset_1024_8 /* 8000 */
233 };
234
235 #ifdef LD_DEC
236 ALIGN static const uint16_t *swb_offset_512_window[] =
237 {
238 0, /* 96000 */
239 0, /* 88200 */
240 0, /* 64000 */
241 swb_offset_512_48, /* 48000 */
242 swb_offset_512_48, /* 44100 */
243 swb_offset_512_32, /* 32000 */
244 swb_offset_512_24, /* 24000 */
245 swb_offset_512_24, /* 22050 */
246 0, /* 16000 */
247 0, /* 12000 */
248 0, /* 11025 */
249 0 /* 8000 */
250 };
251
252 ALIGN static const uint16_t *swb_offset_480_window[] =
253 {
254 0, /* 96000 */
255 0, /* 88200 */
256 0, /* 64000 */
257 swb_offset_480_48, /* 48000 */
258 swb_offset_480_48, /* 44100 */
259 swb_offset_480_32, /* 32000 */
260 swb_offset_480_24, /* 24000 */
261 swb_offset_480_24, /* 22050 */
262 0, /* 16000 */
263 0, /* 12000 */
264 0, /* 11025 */
265 0 /* 8000 */
266 };
267 #endif
268
269 ALIGN static const uint16_t *swb_offset_128_window[] =
270 {
271 swb_offset_128_96, /* 96000 */
272 swb_offset_128_96, /* 88200 */
273 swb_offset_128_64, /* 64000 */
274 swb_offset_128_48, /* 48000 */
275 swb_offset_128_48, /* 44100 */
276 swb_offset_128_48, /* 32000 */
277 swb_offset_128_24, /* 24000 */
278 swb_offset_128_24, /* 22050 */
279 swb_offset_128_16, /* 16000 */
280 swb_offset_128_16, /* 12000 */
281 swb_offset_128_16, /* 11025 */
282 swb_offset_128_8 /* 8000 */
283 };
284
285 #define bit_set(A, B) ((A) & (1<<(B)))
286
287 /* 4.5.2.3.4 */
288 /*
289 - determine the number of windows in a window_sequence named num_windows
290 - determine the number of window_groups named num_window_groups
291 - determine the number of windows in each group named window_group_length[g]
292 - determine the total number of scalefactor window bands named num_swb for
293 the actual window type
294 - determine swb_offset[swb], the offset of the first coefficient in
295 scalefactor window band named swb of the window actually used
296 - determine sect_sfb_offset[g][section],the offset of the first coefficient
297 in section named section. This offset depends on window_sequence and
298 scale_factor_grouping and is needed to decode the spectral_data().
299 */
300 uint8_t window_grouping_info(NeAACDecHandle hDecoder, ic_stream *ics)
301 {
302 uint8_t i, g;
303
304 uint8_t sf_index = hDecoder->sf_index;
305
306 switch (ics->window_sequence) {
307 case ONLY_LONG_SEQUENCE:
308 case LONG_START_SEQUENCE:
309 case LONG_STOP_SEQUENCE:
310 ics->num_windows = 1;
311 ics->num_window_groups = 1;
312 ics->window_group_length[ics->num_window_groups-1] = 1;
313 #ifdef LD_DEC
314 if (hDecoder->object_type == LD)
315 {
316 if (hDecoder->frameLength == 512)
317 ics->num_swb = num_swb_512_window[sf_index];
318 else /* if (hDecoder->frameLength == 480) */
319 ics->num_swb = num_swb_480_window[sf_index];
320 } else {
321 #endif
322 if (hDecoder->frameLength == 1024)
323 ics->num_swb = num_swb_1024_window[sf_index];
324 else /* if (hDecoder->frameLength == 960) */
325 ics->num_swb = num_swb_960_window[sf_index];
326 #ifdef LD_DEC
327 }
328 #endif
329
330 /* preparation of sect_sfb_offset for long blocks */
331 /* also copy the last value! */
332 #ifdef LD_DEC
333 if (hDecoder->object_type == LD)
334 {
335 if (hDecoder->frameLength == 512)
336 {
337 for (i = 0; i < ics->num_swb; i++)
338 {
339 ics->sect_sfb_offset[0][i] = swb_offset_512_window[sf_index][i];
340 ics->swb_offset[i] = swb_offset_512_window[sf_index][i];
341 }
342 } else /* if (hDecoder->frameLength == 480) */ {
343 for (i = 0; i < ics->num_swb; i++)
344 {
345 ics->sect_sfb_offset[0][i] = swb_offset_480_window[sf_index][i];
346 ics->swb_offset[i] = swb_offset_480_window[sf_index][i];
347 }
348 }
349 ics->sect_sfb_offset[0][ics->num_swb] = hDecoder->frameLength;
350 ics->swb_offset[ics->num_swb] = hDecoder->frameLength;
351 } else {
352 #endif
353 for (i = 0; i < ics->num_swb; i++)
354 {
355 ics->sect_sfb_offset[0][i] = swb_offset_1024_window[sf_index][i];
356 ics->swb_offset[i] = swb_offset_1024_window[sf_index][i];
357 }
358 ics->sect_sfb_offset[0][ics->num_swb] = hDecoder->frameLength;
359 ics->swb_offset[ics->num_swb] = hDecoder->frameLength;
360 #ifdef LD_DEC
361 }
362 #endif
363 return 0;
364 case EIGHT_SHORT_SEQUENCE:
365 ics->num_windows = 8;
366 ics->num_window_groups = 1;
367 ics->window_group_length[ics->num_window_groups-1] = 1;
368 ics->num_swb = num_swb_128_window[sf_index];
369
370 for (i = 0; i < ics->num_swb; i++)
371 ics->swb_offset[i] = swb_offset_128_window[sf_index][i];
372 ics->swb_offset[ics->num_swb] = hDecoder->frameLength/8;
373
374 for (i = 0; i < ics->num_windows-1; i++) {
375 if (bit_set(ics->scale_factor_grouping, 6-i) == 0)
376 {
377 ics->num_window_groups += 1;
378 ics->window_group_length[ics->num_window_groups-1] = 1;
379 } else {
380 ics->window_group_length[ics->num_window_groups-1] += 1;
381 }
382 }
383
384 /* preparation of sect_sfb_offset for short blocks */
385 for (g = 0; g < ics->num_window_groups; g++)
386 {
387 uint16_t width;
388 uint8_t sect_sfb = 0;
389 uint16_t offset = 0;
390
391 for (i = 0; i < ics->num_swb; i++)
392 {
393 if (i+1 == ics->num_swb)
394 {
395 width = (hDecoder->frameLength/8) - swb_offset_128_window[sf_index][i];
396 } else {
397 width = swb_offset_128_window[sf_index][i+1] -
398 swb_offset_128_window[sf_index][i];
399 }
400 width *= ics->window_group_length[g];
401 ics->sect_sfb_offset[g][sect_sfb++] = offset;
402 offset += width;
403 }
404 ics->sect_sfb_offset[g][sect_sfb] = offset;
405 }
406 return 0;
407 default:
408 return 1;
409 }
410 }
411
412 /* iquant() *
413 /* output = sign(input)*abs(input)^(4/3) */
414 /**/
415 static INLINE real_t iquant(int16_t q, const real_t *tab, uint8_t *error)
416 {
417 #ifdef FIXED_POINT
418 /* For FIXED_POINT the iq_table is prescaled by 3 bits (iq_table[]/8) */
419 /* BIG_IQ_TABLE allows you to use the full 8192 value table, if this is not
420 * defined a 1026 value table and interpolation will be used
421 */
422 #ifndef BIG_IQ_TABLE
423 static const real_t errcorr[] = {
424 REAL_CONST(0), REAL_CONST(1.0/8.0), REAL_CONST(2.0/8.0), REAL_CONST(3.0/8.0),
425 REAL_CONST(4.0/8.0), REAL_CONST(5.0/8.0), REAL_CONST(6.0/8.0), REAL_CONST(7.0/8.0),
426 REAL_CONST(0)
427 };
428 real_t x1, x2;
429 #endif
430 int16_t sgn = 1;
431
432 if (q < 0)
433 {
434 q = -q;
435 sgn = -1;
436 }
437
438 if (q < IQ_TABLE_SIZE)
439 {
440 //#define IQUANT_PRINT
441 #ifdef IQUANT_PRINT
442 //printf("0x%.8X\n", sgn * tab[q]);
443 printf("%d\n", sgn * tab[q]);
444 #endif
445 return sgn * tab[q];
446 }
447
448 #ifndef BIG_IQ_TABLE
449 if (q >= 8192)
450 {
451 *error = 17;
452 return 0;
453 }
454
455 /* linear interpolation */
456 x1 = tab[q>>3];
457 x2 = tab[(q>>3) + 1];
458 return sgn * 16 * (MUL_R(errcorr[q&7],(x2-x1)) + x1);
459 #else
460 *error = 17;
461 return 0;
462 #endif
463
464 #else
465 if (q < 0)
466 {
467 /* tab contains a value for all possible q [0,8192] */
468 if (-q < IQ_TABLE_SIZE)
469 return -tab[-q];
470
471 *error = 17;
472 return 0;
473 } else {
474 /* tab contains a value for all possible q [0,8192] */
475 if (q < IQ_TABLE_SIZE)
476 return tab[q];
477
478 *error = 17;
479 return 0;
480 }
481 #endif
482 }
483
484 #ifndef FIXED_POINT
485 ALIGN static const real_t pow2sf_tab[] = {
486 2.9802322387695313E-008, 5.9604644775390625E-008, 1.1920928955078125E-007,
487 2.384185791015625E-007, 4.76837158203125E-007, 9.5367431640625E-007,
488 1.9073486328125E-006, 3.814697265625E-006, 7.62939453125E-006,
489 1.52587890625E-005, 3.0517578125E-005, 6.103515625E-005,
490 0.0001220703125, 0.000244140625, 0.00048828125,
491 0.0009765625, 0.001953125, 0.00390625,
492 0.0078125, 0.015625, 0.03125,
493 0.0625, 0.125, 0.25,
494 0.5, 1.0, 2.0,
495 4.0, 8.0, 16.0, 32.0,
496 64.0, 128.0, 256.0,
497 512.0, 1024.0, 2048.0,
498 4096.0, 8192.0, 16384.0,
499 32768.0, 65536.0, 131072.0,
500 262144.0, 524288.0, 1048576.0,
501 2097152.0, 4194304.0, 8388608.0,
502 16777216.0, 33554432.0, 67108864.0,
503 134217728.0, 268435456.0, 536870912.0,
504 1073741824.0, 2147483648.0, 4294967296.0,
505 8589934592.0, 17179869184.0, 34359738368.0,
506 68719476736.0, 137438953472.0, 274877906944.0
507 };
508 #endif
509
510 /* quant_to_spec: perform dequantisation and scaling
511 * and in case of short block it also does the deinterleaving
512 */
513 /*
514 For ONLY_LONG_SEQUENCE windows (num_window_groups = 1,
515 window_group_length[0] = 1) the spectral data is in ascending spectral
516 order.
517 For the EIGHT_SHORT_SEQUENCE window, the spectral order depends on the
518 grouping in the following manner:
519 - Groups are ordered sequentially
520 - Within a group, a scalefactor band consists of the spectral data of all
521 grouped SHORT_WINDOWs for the associated scalefactor window band. To
522 clarify via example, the length of a group is in the range of one to eight
523 SHORT_WINDOWs.
524 - If there are eight groups each with length one (num_window_groups = 8,
525 window_group_length[0..7] = 1), the result is a sequence of eight spectra,
526 each in ascending spectral order.
527 - If there is only one group with length eight (num_window_groups = 1,
528 window_group_length[0] = 8), the result is that spectral data of all eight
529 SHORT_WINDOWs is interleaved by scalefactor window bands.
530 - Within a scalefactor window band, the coefficients are in ascending
531 spectral order.
532 */
533 static uint8_t quant_to_spec(NeAACDecHandle hDecoder,
534 ic_stream *ics, int16_t *quant_data,
535 real_t *spec_data, uint16_t frame_len)
536 {
537 ALIGN static const real_t pow2_table[] =
538 {
539 COEF_CONST(1.0),
540 COEF_CONST(1.1892071150027210667174999705605), /* 2^0.25 */
541 COEF_CONST(1.4142135623730950488016887242097), /* 2^0.5 */
542 COEF_CONST(1.6817928305074290860622509524664) /* 2^0.75 */
543 };
544 const real_t *tab = iq_table;
545
546 uint8_t g, sfb, win;
547 uint16_t width, bin, k, gindex, wa, wb;
548 uint8_t error = 0; /* Init error flag */
549 #ifndef FIXED_POINT
550 real_t scf;
551 #endif
552
553 k = 0;
554 gindex = 0;
555
556 for (g = 0; g < ics->num_window_groups; g++)
557 {
558 uint16_t j = 0;
559 uint16_t gincrease = 0;
560 uint16_t win_inc = ics->swb_offset[ics->num_swb];
561
562 for (sfb = 0; sfb < ics->num_swb; sfb++)
563 {
564 int32_t exp, frac;
565
566 width = ics->swb_offset[sfb+1] - ics->swb_offset[sfb];
567
568 /* this could be scalefactor for IS or PNS, those can be negative or bigger then 255 */
569 /* just ignore them */
570 if (ics->scale_factors[g][sfb] < 0 || ics->scale_factors[g][sfb] > 255)
571 {
572 exp = 0;
573 frac = 0;
574 } else {
575 /* ics->scale_factors[g][sfb] must be between 0 and 255 */
576 exp = (ics->scale_factors[g][sfb] /* - 100 */) >> 2;
577 /* frac must always be > 0 */
578 frac = (ics->scale_factors[g][sfb] /* - 100 */) & 3;
579 }
580
581 #ifdef FIXED_POINT
582 exp -= 25;
583 /* IMDCT pre-scaling */
584 if (hDecoder->object_type == LD)
585 {
586 exp -= 6 /*9*/;
587 } else {
588 if (ics->window_sequence == EIGHT_SHORT_SEQUENCE)
589 exp -= 4 /*7*/;
590 else
591 exp -= 7 /*10*/;
592 }
593 #endif
594
595 wa = gindex + j;
596
597 #ifndef FIXED_POINT
598 scf = pow2sf_tab[exp/*+25*/] * pow2_table[frac];
599 #endif
600
601 for (win = 0; win < ics->window_group_length[g]; win++)
602 {
603 for (bin = 0; bin < width; bin += 4)
604 {
605 #ifndef FIXED_POINT
606 wb = wa + bin;
607
608 spec_data[wb+0] = iquant(quant_data[k+0], tab, &error) * scf;
609 spec_data[wb+1] = iquant(quant_data[k+1], tab, &error) * scf;
610 spec_data[wb+2] = iquant(quant_data[k+2], tab, &error) * scf;
611 spec_data[wb+3] = iquant(quant_data[k+3], tab, &error) * scf;
612
613 #else
614 real_t iq0 = iquant(quant_data[k+0], tab, &error);
615 real_t iq1 = iquant(quant_data[k+1], tab, &error);
616 real_t iq2 = iquant(quant_data[k+2], tab, &error);
617 real_t iq3 = iquant(quant_data[k+3], tab, &error);
618
619 wb = wa + bin;
620
621 if (exp < 0)
622 {
623 spec_data[wb+0] = iq0 >>= -exp;
624 spec_data[wb+1] = iq1 >>= -exp;
625 spec_data[wb+2] = iq2 >>= -exp;
626 spec_data[wb+3] = iq3 >>= -exp;
627 } else {
628 spec_data[wb+0] = iq0 <<= exp;
629 spec_data[wb+1] = iq1 <<= exp;
630 spec_data[wb+2] = iq2 <<= exp;
631 spec_data[wb+3] = iq3 <<= exp;
632 }
633 if (frac != 0)
634 {
635 spec_data[wb+0] = MUL_C(spec_data[wb+0],pow2_table[frac]);
636 spec_data[wb+1] = MUL_C(spec_data[wb+1],pow2_table[frac]);
637 spec_data[wb+2] = MUL_C(spec_data[wb+2],pow2_table[frac]);
638 spec_data[wb+3] = MUL_C(spec_data[wb+3],pow2_table[frac]);
639 }
640
641 //#define SCFS_PRINT
642 #ifdef SCFS_PRINT
643 printf("%d\n", spec_data[gindex+(win*win_inc)+j+bin+0]);
644 printf("%d\n", spec_data[gindex+(win*win_inc)+j+bin+1]);
645 printf("%d\n", spec_data[gindex+(win*win_inc)+j+bin+2]);
646 printf("%d\n", spec_data[gindex+(win*win_inc)+j+bin+3]);
647 //printf("0x%.8X\n", spec_data[gindex+(win*win_inc)+j+bin+0]);
648 //printf("0x%.8X\n", spec_data[gindex+(win*win_inc)+j+bin+1]);
649 //printf("0x%.8X\n", spec_data[gindex+(win*win_inc)+j+bin+2]);
650 //printf("0x%.8X\n", spec_data[gindex+(win*win_inc)+j+bin+3]);
651 #endif
652 #endif
653
654 gincrease += 4;
655 k += 4;
656 }
657 wa += win_inc;
658 }
659 j += width;
660 }
661 gindex += gincrease;
662 }
663
664 return error;
665 }
666
667 static uint8_t allocate_single_channel(NeAACDecHandle hDecoder, uint8_t channel,
668 uint8_t output_channels)
669 {
670 uint8_t mul = 1;
671
672 #ifdef MAIN_DEC
673 /* MAIN object type prediction */
674 if (hDecoder->object_type == MAIN)
675 {
676 hDecoder->pred_stat[channel] = (pred_state*)realloc(hDecoder->pred_stat[channel], hDecoder->frameLength * sizeof(pred_state));
677 reset_all_predictors(hDecoder->pred_stat[channel], hDecoder->frameLength);
678 }
679 #endif
680
681 #ifdef LTP_DEC
682 if (is_ltp_ot(hDecoder->object_type))
683 {
684 hDecoder->lt_pred_stat[channel] = (int16_t*)realloc(hDecoder->lt_pred_stat[channel], hDecoder->frameLength*4 * sizeof(int16_t));
685 memset(hDecoder->lt_pred_stat[channel], 0, hDecoder->frameLength*4 * sizeof(int16_t));
686 }
687 #endif
688
689 mul = 1;
690 #ifdef SBR_DEC
691 hDecoder->sbr_alloced[hDecoder->fr_ch_ele] = 0;
692 if ((hDecoder->sbr_present_flag == 1) || (hDecoder->forceUpSampling == 1))
693 {
694 /* SBR requires 2 times as much output data */
695 mul = 2;
696 hDecoder->sbr_alloced[hDecoder->fr_ch_ele] = 1;
697 }
698 #endif
699 hDecoder->time_out[channel] = (real_t*)realloc(hDecoder->time_out[channel], mul*hDecoder->frameLength*sizeof(real_t));
700 memset(hDecoder->time_out[channel], 0, mul*hDecoder->frameLength*sizeof(real_t));
701 #if (defined(PS_DEC) || defined(DRM_PS))
702 if (output_channels == 2)
703 {
704 hDecoder->time_out[channel+1] = (real_t*)realloc(hDecoder->time_out[channel+1], mul*hDecoder->frameLength*sizeof(real_t));
705 memset(hDecoder->time_out[channel+1], 0, mul*hDecoder->frameLength*sizeof(real_t));
706 }
707 #endif
708
709 hDecoder->fb_intermed[channel] = (real_t*)realloc(hDecoder->fb_intermed[channel], hDecoder->frameLength*sizeof(real_t));
710 memset(hDecoder->fb_intermed[channel], 0, hDecoder->frameLength*sizeof(real_t));
711
712 #ifdef SSR_DEC
713 if (hDecoder->object_type == SSR)
714 {
715 uint16_t k;
716 hDecoder->ssr_overlap[channel] = (real_t*)realloc(hDecoder->ssr_overlap[channel], 2*hDecoder->frameLength*sizeof(real_t));
717 memset(hDecoder->ssr_overlap[channel], 0, 2*hDecoder->frameLength*sizeof(real_t));
718 hDecoder->prev_fmd[channel] = (real_t*)realloc(hDecoder->prev_fmd[channel], 2*hDecoder->frameLength*sizeof(real_t));
719 for (k = 0; k < 2*hDecoder->frameLength; k++)
720 hDecoder->prev_fmd[channel][k] = REAL_CONST(-1);
721 }
722 #endif
723
724 return 0;
725 }
726
727 static uint8_t allocate_channel_pair(NeAACDecHandle hDecoder,
728 uint8_t channel, uint8_t paired_channel)
729 {
730 uint8_t mul = 1;
731
732 #ifdef MAIN_DEC
733 /* MAIN object type prediction */
734 if (hDecoder->object_type == MAIN)
735 {
736 /* allocate the state only when needed */
737 if (hDecoder->pred_stat[channel] == NULL)
738 {
739 hDecoder->pred_stat[channel] = (pred_state*)faad_malloc(hDecoder->frameLength * sizeof(pred_state));
740 reset_all_predictors(hDecoder->pred_stat[channel], hDecoder->frameLength);
741 }
742 if (hDecoder->pred_stat[paired_channel] == NULL)
743 {
744 hDecoder->pred_stat[paired_channel] = (pred_state*)faad_malloc(hDecoder->frameLength * sizeof(pred_state));
745 reset_all_predictors(hDecoder->pred_stat[paired_channel], hDecoder->frameLength);
746 }
747 }
748 #endif
749
750 #ifdef LTP_DEC
751 if (is_ltp_ot(hDecoder->object_type))
752 {
753 /* allocate the state only when needed */
754 if (hDecoder->lt_pred_stat[channel] == NULL)
755 {
756 hDecoder->lt_pred_stat[channel] = (int16_t*)faad_malloc(hDecoder->frameLength*4 * sizeof(int16_t));
757 memset(hDecoder->lt_pred_stat[channel], 0, hDecoder->frameLength*4 * sizeof(int16_t));
758 }
759 if (hDecoder->lt_pred_stat[paired_channel] == NULL)
760 {
761 hDecoder->lt_pred_stat[paired_channel] = (int16_t*)faad_malloc(hDecoder->frameLength*4 * sizeof(int16_t));
762 memset(hDecoder->lt_pred_stat[paired_channel], 0, hDecoder->frameLength*4 * sizeof(int16_t));
763 }
764 }
765 #endif
766
767 if (hDecoder->time_out[channel] == NULL)
768 {
769 mul = 1;
770 #ifdef SBR_DEC
771 hDecoder->sbr_alloced[hDecoder->fr_ch_ele] = 0;
772 if ((hDecoder->sbr_present_flag == 1) || (hDecoder->forceUpSampling == 1))
773 {
774 /* SBR requires 2 times as much output data */
775 mul = 2;
776 hDecoder->sbr_alloced[hDecoder->fr_ch_ele] = 1;
777 }
778 #endif
779 hDecoder->time_out[channel] = (real_t*)faad_malloc(mul*hDecoder->frameLength*sizeof(real_t));
780 memset(hDecoder->time_out[channel], 0, mul*hDecoder->frameLength*sizeof(real_t));
781 }
782 if (hDecoder->time_out[paired_channel] == NULL)
783 {
784 hDecoder->time_out[paired_channel] = (real_t*)faad_malloc(mul*hDecoder->frameLength*sizeof(real_t));
785 memset(hDecoder->time_out[paired_channel], 0, mul*hDecoder->frameLength*sizeof(real_t));
786 }
787
788 if (hDecoder->fb_intermed[channel] == NULL)
789 {
790 hDecoder->fb_intermed[channel] = (real_t*)faad_malloc(hDecoder->frameLength*sizeof(real_t));
791 memset(hDecoder->fb_intermed[channel], 0, hDecoder->frameLength*sizeof(real_t));
792 }
793 if (hDecoder->fb_intermed[paired_channel] == NULL)
794 {
795 hDecoder->fb_intermed[paired_channel] = (real_t*)faad_malloc(hDecoder->frameLength*sizeof(real_t));
796 memset(hDecoder->fb_intermed[paired_channel], 0, hDecoder->frameLength*sizeof(real_t));
797 }
798
799 #ifdef SSR_DEC
800 if (hDecoder->object_type == SSR)
801 {
802 if (hDecoder->ssr_overlap[cpe->channel] == NULL)
803 {
804 hDecoder->ssr_overlap[cpe->channel] = (real_t*)faad_malloc(2*hDecoder->frameLength*sizeof(real_t));
805 memset(hDecoder->ssr_overlap[cpe->channel], 0, 2*hDecoder->frameLength*sizeof(real_t));
806 }
807 if (hDecoder->ssr_overlap[cpe->paired_channel] == NULL)
808 {
809 hDecoder->ssr_overlap[cpe->paired_channel] = (real_t*)faad_malloc(2*hDecoder->frameLength*sizeof(real_t));
810 memset(hDecoder->ssr_overlap[cpe->paired_channel], 0, 2*hDecoder->frameLength*sizeof(real_t));
811 }
812 if (hDecoder->prev_fmd[cpe->channel] == NULL)
813 {
814 uint16_t k;
815 hDecoder->prev_fmd[cpe->channel] = (real_t*)faad_malloc(2*hDecoder->frameLength*sizeof(real_t));
816 for (k = 0; k < 2*hDecoder->frameLength; k++)
817 hDecoder->prev_fmd[cpe->channel][k] = REAL_CONST(-1);
818 }
819 if (hDecoder->prev_fmd[cpe->paired_channel] == NULL)
820 {
821 uint16_t k;
822 hDecoder->prev_fmd[cpe->paired_channel] = (real_t*)faad_malloc(2*hDecoder->frameLength*sizeof(real_t));
823 for (k = 0; k < 2*hDecoder->frameLength; k++)
824 hDecoder->prev_fmd[cpe->paired_channel][k] = REAL_CONST(-1);
825 }
826 }
827 #endif
828
829 return 0;
830 }
831
832 uint8_t reconstruct_single_channel(NeAACDecHandle hDecoder, ic_stream *ics,
833 element *sce, int16_t *spec_data)
834 {
835 uint8_t retval, output_channels;
836 ALIGN real_t spec_coef[1024];
837
838 #ifdef PROFILE
839 int64_t count = faad_get_ts();
840 #endif
841
842
843 /* always allocate 2 channels, PS can always "suddenly" turn up */
844 #if (defined(PS_DEC) || defined(DRM_PS))
845 output_channels = hDecoder->ps_used[hDecoder->fr_ch_ele] ? 2 : 1;
846 #else
847 output_channels = 1;
848 #endif
849
850 if (hDecoder->element_output_channels[hDecoder->fr_ch_ele] < output_channels) {
851 hDecoder->element_output_channels[hDecoder->fr_ch_ele] = output_channels;
852 retval = allocate_single_channel(hDecoder, sce->channel, output_channels);
853 if (retval > 0)
854 return retval;
855
856 hDecoder->element_alloced[hDecoder->fr_ch_ele] = 1;
857 }
858
859
860 /* dequantisation and scaling */
861 retval = quant_to_spec(hDecoder, ics, spec_data, spec_coef, hDecoder->frameLength);
862 if (retval > 0)
863 return retval;
864
865 #ifdef PROFILE
866 count = faad_get_ts() - count;
867 hDecoder->requant_cycles += count;
868 #endif
869
870
871 /* pns decoding */
872 pns_decode(ics, NULL, spec_coef, NULL, hDecoder->frameLength, 0, hDecoder->object_type);
873
874 #ifdef MAIN_DEC
875 /* MAIN object type prediction */
876 if (hDecoder->object_type == MAIN)
877 {
878 /* intra channel prediction */
879 ic_prediction(ics, spec_coef, hDecoder->pred_stat[sce->channel], hDecoder->frameLength,
880 hDecoder->sf_index);
881
882 /* In addition, for scalefactor bands coded by perceptual
883 noise substitution the predictors belonging to the
884 corresponding spectral coefficients are reset.
885 */
886 pns_reset_pred_state(ics, hDecoder->pred_stat[sce->channel]);
887 }
888 #endif
889
890 #ifdef LTP_DEC
891 if (is_ltp_ot(hDecoder->object_type))
892 {
893 #ifdef LD_DEC
894 if (hDecoder->object_type == LD)
895 {
896 if (ics->ltp.data_present)
897 {
898 if (ics->ltp.lag_update)
899 hDecoder->ltp_lag[sce->channel] = ics->ltp.lag;
900 }
901 ics->ltp.lag = hDecoder->ltp_lag[sce->channel];
902 }
903 #endif
904
905 /* long term prediction */
906 lt_prediction(ics, &(ics->ltp), spec_coef, hDecoder->lt_pred_stat[sce->channel], hDecoder->fb,
907 ics->window_shape, hDecoder->window_shape_prev[sce->channel],
908 hDecoder->sf_index, hDecoder->object_type, hDecoder->frameLength);
909 }
910 #endif
911
912 /* tns decoding */
913 tns_decode_frame(ics, &(ics->tns), hDecoder->sf_index, hDecoder->object_type,
914 spec_coef, hDecoder->frameLength);
915
916 /* drc decoding */
917 if (hDecoder->drc->present)
918 {
919 if (!hDecoder->drc->exclude_mask[sce->channel] || !hDecoder->drc->excluded_chns_present)
920 drc_decode(hDecoder->drc, spec_coef);
921 }
922
923 /* filter bank */
924 #ifdef SSR_DEC
925 if (hDecoder->object_type != SSR)
926 {
927 #endif
928 ifilter_bank(hDecoder->fb, ics->window_sequence, ics->window_shape,
929 hDecoder->window_shape_prev[sce->channel], spec_coef,
930 hDecoder->time_out[sce->channel], hDecoder->fb_intermed[sce->channel],
931 hDecoder->object_type, hDecoder->frameLength);
932 #ifdef SSR_DEC
933 } else {
934 ssr_decode(&(ics->ssr), hDecoder->fb, ics->window_sequence, ics->window_shape,
935 hDecoder->window_shape_prev[sce->channel], spec_coef, hDecoder->time_out[sce->channel],
936 hDecoder->ssr_overlap[sce->channel], hDecoder->ipqf_buffer[sce->channel], hDecoder->prev_fmd[sce->channel],
937 hDecoder->frameLength);
938 }
939 #endif
940
941 /* save window shape for next frame */
942 hDecoder->window_shape_prev[sce->channel] = ics->window_shape;
943
944 #ifdef LTP_DEC
945 if (is_ltp_ot(hDecoder->object_type))
946 {
947 lt_update_state(hDecoder->lt_pred_stat[sce->channel], hDecoder->time_out[sce->channel],
948 hDecoder->fb_intermed[sce->channel], hDecoder->frameLength, hDecoder->object_type);
949 }
950 #endif
951
952 #ifdef SBR_DEC
953 if (((hDecoder->sbr_present_flag == 1) || (hDecoder->forceUpSampling == 1))
954 && hDecoder->sbr_alloced[hDecoder->fr_ch_ele])
955 {
956 uint8_t ele = hDecoder->fr_ch_ele;
957 uint8_t ch = sce->channel;
958
959 /* following case can happen when forceUpSampling == 1 */
960 if (hDecoder->sbr[ele] == NULL)
961 {
962 hDecoder->sbr[ele] = sbrDecodeInit(hDecoder->frameLength,
963 hDecoder->element_id[ele], 2*get_sample_rate(hDecoder->sf_index),
964 hDecoder->downSampledSBR
965 #ifdef DRM
966 , 0
967 #endif
968 );
969 }
970
971 if (sce->ics1.window_sequence == EIGHT_SHORT_SEQUENCE)
972 hDecoder->sbr[ele]->maxAACLine = 8*sce->ics1.swb_offset[max(sce->ics1.max_sfb-1, 0)];
973 else
974 hDecoder->sbr[ele]->maxAACLine = sce->ics1.swb_offset[max(sce->ics1.max_sfb-1, 0)];
975
976 /* check if any of the PS tools is used */
977 #if (defined(PS_DEC) || defined(DRM_PS))
978 if (hDecoder->ps_used[ele] == 0)
979 {
980 #endif
981 retval = sbrDecodeSingleFrame(hDecoder->sbr[ele], hDecoder->time_out[ch],
982 hDecoder->postSeekResetFlag, hDecoder->downSampledSBR);
983 #if (defined(PS_DEC) || defined(DRM_PS))
984 } else {
985 retval = sbrDecodeSingleFramePS(hDecoder->sbr[ele], hDecoder->time_out[ch],
986 hDecoder->time_out[ch+1], hDecoder->postSeekResetFlag,
987 hDecoder->downSampledSBR);
988 }
989 #endif
990 if (retval > 0)
991 return retval;
992 } else if (((hDecoder->sbr_present_flag == 1) || (hDecoder->forceUpSampling == 1))
993 && !hDecoder->sbr_alloced[hDecoder->fr_ch_ele])
994 {
995 return 23;
996 }
997
998 /* copy L to R when no PS is used */
999 #if (defined(PS_DEC) || defined(DRM_PS))
1000 if ((hDecoder->ps_used[hDecoder->fr_ch_ele] == 0) && (output_channels == 2))
1001 {
1002 uint8_t ele = hDecoder->fr_ch_ele;
1003 uint8_t ch = sce->channel;
1004 uint16_t frame_size = (hDecoder->sbr_alloced[ele]) ? 2 : 1;
1005 frame_size *= hDecoder->frameLength*sizeof(real_t);
1006
1007 memcpy(hDecoder->time_out[ch+1], hDecoder->time_out[ch], frame_size);
1008 }
1009 #endif
1010 #endif
1011
1012 return 0;
1013 }
1014
1015 uint8_t reconstruct_channel_pair(NeAACDecHandle hDecoder, ic_stream *ics1, ic_stream *ics2,
1016 element *cpe, int16_t *spec_data1, int16_t *spec_data2)
1017 {
1018 uint8_t retval;
1019 ALIGN real_t spec_coef1[1024];
1020 ALIGN real_t spec_coef2[1024];
1021
1022 #ifdef PROFILE
1023 int64_t count = faad_get_ts();
1024 #endif
1025 if (hDecoder->element_alloced[hDecoder->fr_ch_ele] == 0)
1026 {
1027 retval = allocate_channel_pair(hDecoder, cpe->channel, (uint8_t)cpe->paired_channel);
1028 if (retval > 0)
1029 return retval;
1030
1031 hDecoder->element_alloced[hDecoder->fr_ch_ele] = 1;
1032 }
1033
1034 /* dequantisation and scaling */
1035 retval = quant_to_spec(hDecoder, ics1, spec_data1, spec_coef1, hDecoder->frameLength);
1036 if (retval > 0)
1037 return retval;
1038 retval = quant_to_spec(hDecoder, ics2, spec_data2, spec_coef2, hDecoder->frameLength);
1039 if (retval > 0)
1040 return retval;
1041
1042 #ifdef PROFILE
1043 count = faad_get_ts() - count;
1044 hDecoder->requant_cycles += count;
1045 #endif
1046
1047
1048 /* pns decoding */
1049 if (ics1->ms_mask_present)
1050 {
1051 pns_decode(ics1, ics2, spec_coef1, spec_coef2, hDecoder->frameLength, 1, hDecoder->object_type);
1052 } else {
1053 pns_decode(ics1, NULL, spec_coef1, NULL, hDecoder->frameLength, 0, hDecoder->object_type);
1054 pns_decode(ics2, NULL, spec_coef2, NULL, hDecoder->frameLength, 0, hDecoder->object_type);
1055 }
1056
1057 /* mid/side decoding */
1058 ms_decode(ics1, ics2, spec_coef1, spec_coef2, hDecoder->frameLength);
1059
1060 #if 0
1061 {
1062 int i;
1063 for (i = 0; i < 1024; i++)
1064 {
1065 //printf("%d\n", spec_coef1[i]);
1066 printf("0x%.8X\n", spec_coef1[i]);
1067 }
1068 for (i = 0; i < 1024; i++)
1069 {
1070 //printf("%d\n", spec_coef2[i]);
1071 printf("0x%.8X\n", spec_coef2[i]);
1072 }
1073 }
1074 #endif
1075
1076 /* intensity stereo decoding */
1077 is_decode(ics1, ics2, spec_coef1, spec_coef2, hDecoder->frameLength);
1078
1079 #if 0
1080 {
1081 int i;
1082 for (i = 0; i < 1024; i++)
1083 {
1084 printf("%d\n", spec_coef1[i]);
1085 //printf("0x%.8X\n", spec_coef1[i]);
1086 }
1087 for (i = 0; i < 1024; i++)
1088 {
1089 printf("%d\n", spec_coef2[i]);
1090 //printf("0x%.8X\n", spec_coef2[i]);
1091 }
1092 }
1093 #endif
1094
1095 #ifdef MAIN_DEC
1096 /* MAIN object type prediction */
1097 if (hDecoder->object_type == MAIN)
1098 {
1099 /* intra channel prediction */
1100 ic_prediction(ics1, spec_coef1, hDecoder->pred_stat[cpe->channel], hDecoder->frameLength,
1101 hDecoder->sf_index);
1102 ic_prediction(ics2, spec_coef2, hDecoder->pred_stat[cpe->paired_channel], hDecoder->frameLength,
1103 hDecoder->sf_index);
1104
1105 /* In addition, for scalefactor bands coded by perceptual
1106 noise substitution the predictors belonging to the
1107 corresponding spectral coefficients are reset.
1108 */
1109 pns_reset_pred_state(ics1, hDecoder->pred_stat[cpe->channel]);
1110 pns_reset_pred_state(ics2, hDecoder->pred_stat[cpe->paired_channel]);
1111 }
1112 #endif
1113
1114 #ifdef LTP_DEC
1115 if (is_ltp_ot(hDecoder->object_type))
1116 {
1117 ltp_info *ltp1 = &(ics1->ltp);
1118 ltp_info *ltp2 = (cpe->common_window) ? &(ics2->ltp2) : &(ics2->ltp);
1119 #ifdef LD_DEC
1120 if (hDecoder->object_type == LD)
1121 {
1122 if (ltp1->data_present)
1123 {
1124 if (ltp1->lag_update)
1125 hDecoder->ltp_lag[cpe->channel] = ltp1->lag;
1126 }
1127 ltp1->lag = hDecoder->ltp_lag[cpe->channel];
1128 if (ltp2->data_present)
1129 {
1130 if (ltp2->lag_update)
1131 hDecoder->ltp_lag[cpe->paired_channel] = ltp2->lag;
1132 }
1133 ltp2->lag = hDecoder->ltp_lag[cpe->paired_channel];
1134 }
1135 #endif
1136
1137 /* long term prediction */
1138 lt_prediction(ics1, ltp1, spec_coef1, hDecoder->lt_pred_stat[cpe->channel], hDecoder->fb,
1139 ics1->window_shape, hDecoder->window_shape_prev[cpe->channel],
1140 hDecoder->sf_index, hDecoder->object_type, hDecoder->frameLength);
1141 lt_prediction(ics2, ltp2, spec_coef2, hDecoder->lt_pred_stat[cpe->paired_channel], hDecoder->fb,
1142 ics2->window_shape, hDecoder->window_shape_prev[cpe->paired_channel],
1143 hDecoder->sf_index, hDecoder->object_type, hDecoder->frameLength);
1144 }
1145 #endif
1146
1147 /* tns decoding */
1148 tns_decode_frame(ics1, &(ics1->tns), hDecoder->sf_index, hDecoder->object_type,
1149 spec_coef1, hDecoder->frameLength);
1150 tns_decode_frame(ics2, &(ics2->tns), hDecoder->sf_index, hDecoder->object_type,
1151 spec_coef2, hDecoder->frameLength);
1152
1153 /* drc decoding */
1154 if (hDecoder->drc->present)
1155 {
1156 if (!hDecoder->drc->exclude_mask[cpe->channel] || !hDecoder->drc->excluded_chns_present)
1157 drc_decode(hDecoder->drc, spec_coef1);
1158 if (!hDecoder->drc->exclude_mask[cpe->paired_channel] || !hDecoder->drc->excluded_chns_present)
1159 drc_decode(hDecoder->drc, spec_coef2);
1160 }
1161
1162 /* filter bank */
1163 #ifdef SSR_DEC
1164 if (hDecoder->object_type != SSR)
1165 {
1166 #endif
1167 ifilter_bank(hDecoder->fb, ics1->window_sequence, ics1->window_shape,
1168 hDecoder->window_shape_prev[cpe->channel], spec_coef1,
1169 hDecoder->time_out[cpe->channel], hDecoder->fb_intermed[cpe->channel],
1170 hDecoder->object_type, hDecoder->frameLength);
1171 ifilter_bank(hDecoder->fb, ics2->window_sequence, ics2->window_shape,
1172 hDecoder->window_shape_prev[cpe->paired_channel], spec_coef2,
1173 hDecoder->time_out[cpe->paired_channel], hDecoder->fb_intermed[cpe->paired_channel],
1174 hDecoder->object_type, hDecoder->frameLength);
1175 #ifdef SSR_DEC
1176 } else {
1177 ssr_decode(&(ics1->ssr), hDecoder->fb, ics1->window_sequence, ics1->window_shape,
1178 hDecoder->window_shape_prev[cpe->channel], spec_coef1, hDecoder->time_out[cpe->channel],
1179 hDecoder->ssr_overlap[cpe->channel], hDecoder->ipqf_buffer[cpe->channel],
1180 hDecoder->prev_fmd[cpe->channel], hDecoder->frameLength);
1181 ssr_decode(&(ics2->ssr), hDecoder->fb, ics2->window_sequence, ics2->window_shape,
1182 hDecoder->window_shape_prev[cpe->paired_channel], spec_coef2, hDecoder->time_out[cpe->paired_channel],
1183 hDecoder->ssr_overlap[cpe->paired_channel], hDecoder->ipqf_buffer[cpe->paired_channel],
1184 hDecoder->prev_fmd[cpe->paired_channel], hDecoder->frameLength);
1185 }
1186 #endif
1187
1188 /* save window shape for next frame */
1189 hDecoder->window_shape_prev[cpe->channel] = ics1->window_shape;
1190 hDecoder->window_shape_prev[cpe->paired_channel] = ics2->window_shape;
1191
1192 #ifdef LTP_DEC
1193 if (is_ltp_ot(hDecoder->object_type))
1194 {
1195 lt_update_state(hDecoder->lt_pred_stat[cpe->channel], hDecoder->time_out[cpe->channel],
1196 hDecoder->fb_intermed[cpe->channel], hDecoder->frameLength, hDecoder->object_type);
1197 lt_update_state(hDecoder->lt_pred_stat[cpe->paired_channel], hDecoder->time_out[cpe->paired_channel],
1198 hDecoder->fb_intermed[cpe->paired_channel], hDecoder->frameLength, hDecoder->object_type);
1199 }
1200 #endif
1201
1202 #ifdef SBR_DEC
1203 if (((hDecoder->sbr_present_flag == 1) || (hDecoder->forceUpSampling == 1))
1204 && hDecoder->sbr_alloced[hDecoder->fr_ch_ele])
1205 {
1206 uint8_t ele = hDecoder->fr_ch_ele;
1207 uint8_t ch0 = cpe->channel;
1208 uint8_t ch1 = cpe->paired_channel;
1209
1210 /* following case can happen when forceUpSampling == 1 */
1211 if (hDecoder->sbr[ele] == NULL)
1212 {
1213 hDecoder->sbr[ele] = sbrDecodeInit(hDecoder->frameLength,
1214 hDecoder->element_id[ele], 2*get_sample_rate(hDecoder->sf_index),
1215 hDecoder->downSampledSBR
1216 #ifdef DRM
1217 , 0
1218 #endif
1219 );
1220 }
1221
1222 if (cpe->ics1.window_sequence == EIGHT_SHORT_SEQUENCE)
1223 hDecoder->sbr[ele]->maxAACLine = 8*cpe->ics1.swb_offset[max(cpe->ics1.max_sfb-1, 0)];
1224 else
1225 hDecoder->sbr[ele]->maxAACLine = cpe->ics1.swb_offset[max(cpe->ics1.max_sfb-1, 0)];
1226
1227 retval = sbrDecodeCoupleFrame(hDecoder->sbr[ele],
1228 hDecoder->time_out[ch0], hDecoder->time_out[ch1],
1229 hDecoder->postSeekResetFlag, hDecoder->downSampledSBR);
1230 if (retval > 0)
1231 return retval;
1232 } else if (((hDecoder->sbr_present_flag == 1) || (hDecoder->forceUpSampling == 1))
1233 && !hDecoder->sbr_alloced[hDecoder->fr_ch_ele])
1234 {
1235 return 23;
1236 }
1237 #endif
1238
1239 return 0;
1240 }
mplayer with SMedia Glamo drivers