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author | Dave Chapman <dave@dchapman.com> | 2005-10-31 18:56:29 +0000 |
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committer | Dave Chapman <dave@dchapman.com> | 2005-10-31 18:56:29 +0000 |
commit | 65de1cc6af31f547bd36d320f09cbcc6e6975421 (patch) | |
tree | d1ab6e97adfacb3ef8ca95cdf1c90fcb025271b0 /apps/codecs/libfaad/sbr_dec.c | |
parent | b83dc3861e5552a802767f37cb97d6b41c9f01cc (diff) | |
download | rockbox-65de1cc6af31f547bd36d320f09cbcc6e6975421.tar.gz rockbox-65de1cc6af31f547bd36d320f09cbcc6e6975421.zip |
Initial check-in of unmodified libfaad (part of the FAAD2 project). This is the last version of libfaad available under the GPL - the state of FAAD2 CVS at midnight on 2005-02-01
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@7699 a1c6a512-1295-4272-9138-f99709370657
Diffstat (limited to 'apps/codecs/libfaad/sbr_dec.c')
-rw-r--r-- | apps/codecs/libfaad/sbr_dec.c | 614 |
1 files changed, 614 insertions, 0 deletions
diff --git a/apps/codecs/libfaad/sbr_dec.c b/apps/codecs/libfaad/sbr_dec.c new file mode 100644 index 0000000000..04752d793b --- /dev/null +++ b/apps/codecs/libfaad/sbr_dec.c | |||
@@ -0,0 +1,614 @@ | |||
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 | ** Commercial non-GPL licensing of this software is possible. | ||
23 | ** For more info contact Ahead Software through Mpeg4AAClicense@nero.com. | ||
24 | ** | ||
25 | ** $Id$ | ||
26 | **/ | ||
27 | |||
28 | |||
29 | #include "common.h" | ||
30 | #include "structs.h" | ||
31 | |||
32 | #ifdef SBR_DEC | ||
33 | |||
34 | #include <string.h> | ||
35 | #include <stdlib.h> | ||
36 | |||
37 | #include "syntax.h" | ||
38 | #include "bits.h" | ||
39 | #include "sbr_syntax.h" | ||
40 | #include "sbr_qmf.h" | ||
41 | #include "sbr_hfgen.h" | ||
42 | #include "sbr_hfadj.h" | ||
43 | |||
44 | |||
45 | /* static function declarations */ | ||
46 | static uint8_t sbr_save_prev_data(sbr_info *sbr, uint8_t ch); | ||
47 | static void sbr_save_matrix(sbr_info *sbr, uint8_t ch); | ||
48 | |||
49 | |||
50 | sbr_info *sbrDecodeInit(uint16_t framelength, uint8_t id_aac, | ||
51 | uint32_t sample_rate, uint8_t downSampledSBR | ||
52 | #ifdef DRM | ||
53 | , uint8_t IsDRM | ||
54 | #endif | ||
55 | ) | ||
56 | { | ||
57 | sbr_info *sbr = faad_malloc(sizeof(sbr_info)); | ||
58 | memset(sbr, 0, sizeof(sbr_info)); | ||
59 | |||
60 | /* save id of the parent element */ | ||
61 | sbr->id_aac = id_aac; | ||
62 | sbr->sample_rate = sample_rate; | ||
63 | |||
64 | sbr->bs_freq_scale = 2; | ||
65 | sbr->bs_alter_scale = 1; | ||
66 | sbr->bs_noise_bands = 2; | ||
67 | sbr->bs_limiter_bands = 2; | ||
68 | sbr->bs_limiter_gains = 2; | ||
69 | sbr->bs_interpol_freq = 1; | ||
70 | sbr->bs_smoothing_mode = 1; | ||
71 | sbr->bs_start_freq = 5; | ||
72 | sbr->bs_amp_res = 1; | ||
73 | sbr->bs_samplerate_mode = 1; | ||
74 | sbr->prevEnvIsShort[0] = -1; | ||
75 | sbr->prevEnvIsShort[1] = -1; | ||
76 | sbr->header_count = 0; | ||
77 | sbr->Reset = 1; | ||
78 | |||
79 | #ifdef DRM | ||
80 | sbr->Is_DRM_SBR = IsDRM; | ||
81 | #endif | ||
82 | sbr->tHFGen = T_HFGEN; | ||
83 | sbr->tHFAdj = T_HFADJ; | ||
84 | |||
85 | sbr->bsco = 0; | ||
86 | sbr->bsco_prev = 0; | ||
87 | sbr->M_prev = 0; | ||
88 | sbr->frame_len = framelength; | ||
89 | |||
90 | /* force sbr reset */ | ||
91 | sbr->bs_start_freq_prev = -1; | ||
92 | |||
93 | if (framelength == 960) | ||
94 | { | ||
95 | sbr->numTimeSlotsRate = RATE * NO_TIME_SLOTS_960; | ||
96 | sbr->numTimeSlots = NO_TIME_SLOTS_960; | ||
97 | } else { | ||
98 | sbr->numTimeSlotsRate = RATE * NO_TIME_SLOTS; | ||
99 | sbr->numTimeSlots = NO_TIME_SLOTS; | ||
100 | } | ||
101 | |||
102 | sbr->GQ_ringbuf_index[0] = 0; | ||
103 | sbr->GQ_ringbuf_index[1] = 0; | ||
104 | |||
105 | if (id_aac == ID_CPE) | ||
106 | { | ||
107 | /* stereo */ | ||
108 | uint8_t j; | ||
109 | sbr->qmfa[0] = qmfa_init(32); | ||
110 | sbr->qmfa[1] = qmfa_init(32); | ||
111 | sbr->qmfs[0] = qmfs_init((downSampledSBR)?32:64); | ||
112 | sbr->qmfs[1] = qmfs_init((downSampledSBR)?32:64); | ||
113 | |||
114 | for (j = 0; j < 5; j++) | ||
115 | { | ||
116 | sbr->G_temp_prev[0][j] = faad_malloc(64*sizeof(real_t)); | ||
117 | sbr->G_temp_prev[1][j] = faad_malloc(64*sizeof(real_t)); | ||
118 | sbr->Q_temp_prev[0][j] = faad_malloc(64*sizeof(real_t)); | ||
119 | sbr->Q_temp_prev[1][j] = faad_malloc(64*sizeof(real_t)); | ||
120 | } | ||
121 | |||
122 | memset(sbr->Xsbr[0], 0, (sbr->numTimeSlotsRate+sbr->tHFGen)*64 * sizeof(qmf_t)); | ||
123 | memset(sbr->Xsbr[1], 0, (sbr->numTimeSlotsRate+sbr->tHFGen)*64 * sizeof(qmf_t)); | ||
124 | } else { | ||
125 | /* mono */ | ||
126 | uint8_t j; | ||
127 | sbr->qmfa[0] = qmfa_init(32); | ||
128 | sbr->qmfs[0] = qmfs_init((downSampledSBR)?32:64); | ||
129 | sbr->qmfs[1] = NULL; | ||
130 | |||
131 | for (j = 0; j < 5; j++) | ||
132 | { | ||
133 | sbr->G_temp_prev[0][j] = faad_malloc(64*sizeof(real_t)); | ||
134 | sbr->Q_temp_prev[0][j] = faad_malloc(64*sizeof(real_t)); | ||
135 | } | ||
136 | |||
137 | memset(sbr->Xsbr[0], 0, (sbr->numTimeSlotsRate+sbr->tHFGen)*64 * sizeof(qmf_t)); | ||
138 | } | ||
139 | |||
140 | return sbr; | ||
141 | } | ||
142 | |||
143 | void sbrDecodeEnd(sbr_info *sbr) | ||
144 | { | ||
145 | uint8_t j; | ||
146 | |||
147 | if (sbr) | ||
148 | { | ||
149 | qmfa_end(sbr->qmfa[0]); | ||
150 | qmfs_end(sbr->qmfs[0]); | ||
151 | if (sbr->qmfs[1] != NULL) | ||
152 | { | ||
153 | qmfa_end(sbr->qmfa[1]); | ||
154 | qmfs_end(sbr->qmfs[1]); | ||
155 | } | ||
156 | |||
157 | for (j = 0; j < 5; j++) | ||
158 | { | ||
159 | if (sbr->G_temp_prev[0][j]) faad_free(sbr->G_temp_prev[0][j]); | ||
160 | if (sbr->Q_temp_prev[0][j]) faad_free(sbr->Q_temp_prev[0][j]); | ||
161 | if (sbr->G_temp_prev[1][j]) faad_free(sbr->G_temp_prev[1][j]); | ||
162 | if (sbr->Q_temp_prev[1][j]) faad_free(sbr->Q_temp_prev[1][j]); | ||
163 | } | ||
164 | |||
165 | #ifdef PS_DEC | ||
166 | if (sbr->ps != NULL) | ||
167 | ps_free(sbr->ps); | ||
168 | #endif | ||
169 | |||
170 | #ifdef DRM_PS | ||
171 | if (sbr->drm_ps != NULL) | ||
172 | drm_ps_free(sbr->drm_ps); | ||
173 | #endif | ||
174 | |||
175 | faad_free(sbr); | ||
176 | } | ||
177 | } | ||
178 | |||
179 | static uint8_t sbr_save_prev_data(sbr_info *sbr, uint8_t ch) | ||
180 | { | ||
181 | uint8_t i; | ||
182 | |||
183 | /* save data for next frame */ | ||
184 | sbr->kx_prev = sbr->kx; | ||
185 | sbr->M_prev = sbr->M; | ||
186 | sbr->bsco_prev = sbr->bsco; | ||
187 | |||
188 | sbr->L_E_prev[ch] = sbr->L_E[ch]; | ||
189 | |||
190 | /* sbr->L_E[ch] can become 0 on files with bit errors */ | ||
191 | if (sbr->L_E[ch] <= 0) | ||
192 | return 19; | ||
193 | |||
194 | sbr->f_prev[ch] = sbr->f[ch][sbr->L_E[ch] - 1]; | ||
195 | for (i = 0; i < MAX_M; i++) | ||
196 | { | ||
197 | sbr->E_prev[ch][i] = sbr->E[ch][i][sbr->L_E[ch] - 1]; | ||
198 | sbr->Q_prev[ch][i] = sbr->Q[ch][i][sbr->L_Q[ch] - 1]; | ||
199 | } | ||
200 | |||
201 | for (i = 0; i < MAX_M; i++) | ||
202 | { | ||
203 | sbr->bs_add_harmonic_prev[ch][i] = sbr->bs_add_harmonic[ch][i]; | ||
204 | } | ||
205 | sbr->bs_add_harmonic_flag_prev[ch] = sbr->bs_add_harmonic_flag[ch]; | ||
206 | |||
207 | if (sbr->l_A[ch] == sbr->L_E[ch]) | ||
208 | sbr->prevEnvIsShort[ch] = 0; | ||
209 | else | ||
210 | sbr->prevEnvIsShort[ch] = -1; | ||
211 | |||
212 | return 0; | ||
213 | } | ||
214 | |||
215 | static void sbr_save_matrix(sbr_info *sbr, uint8_t ch) | ||
216 | { | ||
217 | uint8_t i; | ||
218 | |||
219 | for (i = 0; i < sbr->tHFGen; i++) | ||
220 | { | ||
221 | memmove(sbr->Xsbr[ch][i], sbr->Xsbr[ch][i+sbr->numTimeSlotsRate], 64 * sizeof(qmf_t)); | ||
222 | } | ||
223 | for (i = sbr->tHFGen; i < MAX_NTSRHFG; i++) | ||
224 | { | ||
225 | memset(sbr->Xsbr[ch][i], 0, 64 * sizeof(qmf_t)); | ||
226 | } | ||
227 | } | ||
228 | |||
229 | static void sbr_process_channel(sbr_info *sbr, real_t *channel_buf, qmf_t X[MAX_NTSR][64], | ||
230 | uint8_t ch, uint8_t dont_process, | ||
231 | const uint8_t downSampledSBR) | ||
232 | { | ||
233 | int16_t k, l; | ||
234 | |||
235 | #ifdef SBR_LOW_POWER | ||
236 | ALIGN real_t deg[64]; | ||
237 | #endif | ||
238 | |||
239 | #ifdef DRM | ||
240 | if (sbr->Is_DRM_SBR) | ||
241 | { | ||
242 | sbr->bsco = max((int32_t)sbr->maxAACLine*32/(int32_t)sbr->frame_len - (int32_t)sbr->kx, 0); | ||
243 | } else { | ||
244 | #endif | ||
245 | sbr->bsco = 0; | ||
246 | #ifdef DRM | ||
247 | } | ||
248 | #endif | ||
249 | |||
250 | |||
251 | //#define PRE_QMF_PRINT | ||
252 | #ifdef PRE_QMF_PRINT | ||
253 | { | ||
254 | int i; | ||
255 | for (i = 0; i < 1024; i++) | ||
256 | { | ||
257 | printf("%d\n", channel_buf[i]); | ||
258 | } | ||
259 | } | ||
260 | #endif | ||
261 | |||
262 | |||
263 | /* subband analysis */ | ||
264 | if (dont_process) | ||
265 | sbr_qmf_analysis_32(sbr, sbr->qmfa[ch], channel_buf, sbr->Xsbr[ch], sbr->tHFGen, 32); | ||
266 | else | ||
267 | sbr_qmf_analysis_32(sbr, sbr->qmfa[ch], channel_buf, sbr->Xsbr[ch], sbr->tHFGen, sbr->kx); | ||
268 | |||
269 | if (!dont_process) | ||
270 | { | ||
271 | #if 1 | ||
272 | /* insert high frequencies here */ | ||
273 | /* hf generation using patching */ | ||
274 | hf_generation(sbr, sbr->Xsbr[ch], sbr->Xsbr[ch] | ||
275 | #ifdef SBR_LOW_POWER | ||
276 | ,deg | ||
277 | #endif | ||
278 | ,ch); | ||
279 | #endif | ||
280 | |||
281 | #ifdef SBR_LOW_POWER | ||
282 | for (l = sbr->t_E[ch][0]; l < sbr->t_E[ch][sbr->L_E[ch]]; l++) | ||
283 | { | ||
284 | for (k = 0; k < sbr->kx; k++) | ||
285 | { | ||
286 | QMF_RE(sbr->Xsbr[ch][sbr->tHFAdj + l][k]) = 0; | ||
287 | } | ||
288 | } | ||
289 | #endif | ||
290 | |||
291 | #if 1 | ||
292 | /* hf adjustment */ | ||
293 | hf_adjustment(sbr, sbr->Xsbr[ch] | ||
294 | #ifdef SBR_LOW_POWER | ||
295 | ,deg | ||
296 | #endif | ||
297 | ,ch); | ||
298 | #endif | ||
299 | } | ||
300 | |||
301 | if ((sbr->just_seeked != 0) || dont_process) | ||
302 | { | ||
303 | for (l = 0; l < sbr->numTimeSlotsRate; l++) | ||
304 | { | ||
305 | for (k = 0; k < 32; k++) | ||
306 | { | ||
307 | QMF_RE(X[l][k]) = QMF_RE(sbr->Xsbr[ch][l + sbr->tHFAdj][k]); | ||
308 | #ifndef SBR_LOW_POWER | ||
309 | QMF_IM(X[l][k]) = QMF_IM(sbr->Xsbr[ch][l + sbr->tHFAdj][k]); | ||
310 | #endif | ||
311 | } | ||
312 | for (k = 32; k < 64; k++) | ||
313 | { | ||
314 | QMF_RE(X[l][k]) = 0; | ||
315 | #ifndef SBR_LOW_POWER | ||
316 | QMF_IM(X[l][k]) = 0; | ||
317 | #endif | ||
318 | } | ||
319 | } | ||
320 | } else { | ||
321 | for (l = 0; l < sbr->numTimeSlotsRate; l++) | ||
322 | { | ||
323 | uint8_t kx_band, M_band, bsco_band; | ||
324 | |||
325 | if (l < sbr->t_E[ch][0]) | ||
326 | { | ||
327 | kx_band = sbr->kx_prev; | ||
328 | M_band = sbr->M_prev; | ||
329 | bsco_band = sbr->bsco_prev; | ||
330 | } else { | ||
331 | kx_band = sbr->kx; | ||
332 | M_band = sbr->M; | ||
333 | bsco_band = sbr->bsco; | ||
334 | } | ||
335 | |||
336 | #ifndef SBR_LOW_POWER | ||
337 | for (k = 0; k < kx_band + bsco_band; k++) | ||
338 | { | ||
339 | QMF_RE(X[l][k]) = QMF_RE(sbr->Xsbr[ch][l + sbr->tHFAdj][k]); | ||
340 | QMF_IM(X[l][k]) = QMF_IM(sbr->Xsbr[ch][l + sbr->tHFAdj][k]); | ||
341 | } | ||
342 | for (k = kx_band + bsco_band; k < kx_band + M_band; k++) | ||
343 | { | ||
344 | QMF_RE(X[l][k]) = QMF_RE(sbr->Xsbr[ch][l + sbr->tHFAdj][k]); | ||
345 | QMF_IM(X[l][k]) = QMF_IM(sbr->Xsbr[ch][l + sbr->tHFAdj][k]); | ||
346 | } | ||
347 | for (k = max(kx_band + bsco_band, kx_band + M_band); k < 64; k++) | ||
348 | { | ||
349 | QMF_RE(X[l][k]) = 0; | ||
350 | QMF_IM(X[l][k]) = 0; | ||
351 | } | ||
352 | #else | ||
353 | for (k = 0; k < kx_band + bsco_band; k++) | ||
354 | { | ||
355 | QMF_RE(X[l][k]) = QMF_RE(sbr->Xsbr[ch][l + sbr->tHFAdj][k]); | ||
356 | } | ||
357 | for (k = kx_band + bsco_band; k < min(kx_band + M_band, 63); k++) | ||
358 | { | ||
359 | QMF_RE(X[l][k]) = QMF_RE(sbr->Xsbr[ch][l + sbr->tHFAdj][k]); | ||
360 | } | ||
361 | for (k = max(kx_band + bsco_band, kx_band + M_band); k < 64; k++) | ||
362 | { | ||
363 | QMF_RE(X[l][k]) = 0; | ||
364 | } | ||
365 | QMF_RE(X[l][kx_band - 1 + bsco_band]) += | ||
366 | QMF_RE(sbr->Xsbr[ch][l + sbr->tHFAdj][kx_band - 1 + bsco_band]); | ||
367 | #endif | ||
368 | } | ||
369 | } | ||
370 | } | ||
371 | |||
372 | uint8_t sbrDecodeCoupleFrame(sbr_info *sbr, real_t *left_chan, real_t *right_chan, | ||
373 | const uint8_t just_seeked, const uint8_t downSampledSBR) | ||
374 | { | ||
375 | uint8_t dont_process = 0; | ||
376 | uint8_t ret = 0; | ||
377 | ALIGN qmf_t X[MAX_NTSR][64]; | ||
378 | |||
379 | if (sbr == NULL) | ||
380 | return 20; | ||
381 | |||
382 | /* case can occur due to bit errors */ | ||
383 | if (sbr->id_aac != ID_CPE) | ||
384 | return 21; | ||
385 | |||
386 | if (sbr->ret || (sbr->header_count == 0)) | ||
387 | { | ||
388 | /* don't process just upsample */ | ||
389 | dont_process = 1; | ||
390 | |||
391 | /* Re-activate reset for next frame */ | ||
392 | if (sbr->ret && sbr->Reset) | ||
393 | sbr->bs_start_freq_prev = -1; | ||
394 | } | ||
395 | |||
396 | if (just_seeked) | ||
397 | { | ||
398 | sbr->just_seeked = 1; | ||
399 | } else { | ||
400 | sbr->just_seeked = 0; | ||
401 | } | ||
402 | |||
403 | sbr_process_channel(sbr, left_chan, X, 0, dont_process, downSampledSBR); | ||
404 | /* subband synthesis */ | ||
405 | if (downSampledSBR) | ||
406 | { | ||
407 | sbr_qmf_synthesis_32(sbr, sbr->qmfs[0], X, left_chan); | ||
408 | } else { | ||
409 | sbr_qmf_synthesis_64(sbr, sbr->qmfs[0], X, left_chan); | ||
410 | } | ||
411 | |||
412 | sbr_process_channel(sbr, right_chan, X, 1, dont_process, downSampledSBR); | ||
413 | /* subband synthesis */ | ||
414 | if (downSampledSBR) | ||
415 | { | ||
416 | sbr_qmf_synthesis_32(sbr, sbr->qmfs[1], X, right_chan); | ||
417 | } else { | ||
418 | sbr_qmf_synthesis_64(sbr, sbr->qmfs[1], X, right_chan); | ||
419 | } | ||
420 | |||
421 | if (sbr->bs_header_flag) | ||
422 | sbr->just_seeked = 0; | ||
423 | |||
424 | if (sbr->header_count != 0 && sbr->ret == 0) | ||
425 | { | ||
426 | ret = sbr_save_prev_data(sbr, 0); | ||
427 | if (ret) return ret; | ||
428 | ret = sbr_save_prev_data(sbr, 1); | ||
429 | if (ret) return ret; | ||
430 | } | ||
431 | |||
432 | sbr_save_matrix(sbr, 0); | ||
433 | sbr_save_matrix(sbr, 1); | ||
434 | |||
435 | sbr->frame++; | ||
436 | |||
437 | //#define POST_QMF_PRINT | ||
438 | #ifdef POST_QMF_PRINT | ||
439 | { | ||
440 | int i; | ||
441 | for (i = 0; i < 2048; i++) | ||
442 | { | ||
443 | printf("%d\n", left_chan[i]); | ||
444 | } | ||
445 | for (i = 0; i < 2048; i++) | ||
446 | { | ||
447 | printf("%d\n", right_chan[i]); | ||
448 | } | ||
449 | } | ||
450 | #endif | ||
451 | |||
452 | return 0; | ||
453 | } | ||
454 | |||
455 | uint8_t sbrDecodeSingleFrame(sbr_info *sbr, real_t *channel, | ||
456 | const uint8_t just_seeked, const uint8_t downSampledSBR) | ||
457 | { | ||
458 | uint8_t dont_process = 0; | ||
459 | uint8_t ret = 0; | ||
460 | ALIGN qmf_t X[MAX_NTSR][64]; | ||
461 | |||
462 | if (sbr == NULL) | ||
463 | return 20; | ||
464 | |||
465 | /* case can occur due to bit errors */ | ||
466 | if (sbr->id_aac != ID_SCE && sbr->id_aac != ID_LFE) | ||
467 | return 21; | ||
468 | |||
469 | if (sbr->ret || (sbr->header_count == 0)) | ||
470 | { | ||
471 | /* don't process just upsample */ | ||
472 | dont_process = 1; | ||
473 | |||
474 | /* Re-activate reset for next frame */ | ||
475 | if (sbr->ret && sbr->Reset) | ||
476 | sbr->bs_start_freq_prev = -1; | ||
477 | } | ||
478 | |||
479 | if (just_seeked) | ||
480 | { | ||
481 | sbr->just_seeked = 1; | ||
482 | } else { | ||
483 | sbr->just_seeked = 0; | ||
484 | } | ||
485 | |||
486 | sbr_process_channel(sbr, channel, X, 0, dont_process, downSampledSBR); | ||
487 | /* subband synthesis */ | ||
488 | if (downSampledSBR) | ||
489 | { | ||
490 | sbr_qmf_synthesis_32(sbr, sbr->qmfs[0], X, channel); | ||
491 | } else { | ||
492 | sbr_qmf_synthesis_64(sbr, sbr->qmfs[0], X, channel); | ||
493 | } | ||
494 | |||
495 | if (sbr->bs_header_flag) | ||
496 | sbr->just_seeked = 0; | ||
497 | |||
498 | if (sbr->header_count != 0 && sbr->ret == 0) | ||
499 | { | ||
500 | ret = sbr_save_prev_data(sbr, 0); | ||
501 | if (ret) return ret; | ||
502 | } | ||
503 | |||
504 | sbr_save_matrix(sbr, 0); | ||
505 | |||
506 | sbr->frame++; | ||
507 | |||
508 | //#define POST_QMF_PRINT | ||
509 | #ifdef POST_QMF_PRINT | ||
510 | { | ||
511 | int i; | ||
512 | for (i = 0; i < 2048; i++) | ||
513 | { | ||
514 | printf("%d\n", channel[i]); | ||
515 | } | ||
516 | } | ||
517 | #endif | ||
518 | |||
519 | return 0; | ||
520 | } | ||
521 | |||
522 | #if (defined(PS_DEC) || defined(DRM_PS)) | ||
523 | uint8_t sbrDecodeSingleFramePS(sbr_info *sbr, real_t *left_channel, real_t *right_channel, | ||
524 | const uint8_t just_seeked, const uint8_t downSampledSBR) | ||
525 | { | ||
526 | uint8_t l, k; | ||
527 | uint8_t dont_process = 0; | ||
528 | uint8_t ret = 0; | ||
529 | ALIGN qmf_t X_left[38][64] = {{0}}; | ||
530 | ALIGN qmf_t X_right[38][64] = {{0}}; /* must set this to 0 */ | ||
531 | |||
532 | if (sbr == NULL) | ||
533 | return 20; | ||
534 | |||
535 | /* case can occur due to bit errors */ | ||
536 | if (sbr->id_aac != ID_SCE && sbr->id_aac != ID_LFE) | ||
537 | return 21; | ||
538 | |||
539 | if (sbr->ret || (sbr->header_count == 0)) | ||
540 | { | ||
541 | /* don't process just upsample */ | ||
542 | dont_process = 1; | ||
543 | |||
544 | /* Re-activate reset for next frame */ | ||
545 | if (sbr->ret && sbr->Reset) | ||
546 | sbr->bs_start_freq_prev = -1; | ||
547 | } | ||
548 | |||
549 | if (just_seeked) | ||
550 | { | ||
551 | sbr->just_seeked = 1; | ||
552 | } else { | ||
553 | sbr->just_seeked = 0; | ||
554 | } | ||
555 | |||
556 | if (sbr->qmfs[1] == NULL) | ||
557 | { | ||
558 | sbr->qmfs[1] = qmfs_init((downSampledSBR)?32:64); | ||
559 | } | ||
560 | |||
561 | sbr_process_channel(sbr, left_channel, X_left, 0, dont_process, downSampledSBR); | ||
562 | |||
563 | /* copy some extra data for PS */ | ||
564 | for (l = 32; l < 38; l++) | ||
565 | { | ||
566 | for (k = 0; k < 5; k++) | ||
567 | { | ||
568 | QMF_RE(X_left[l][k]) = QMF_RE(sbr->Xsbr[0][sbr->tHFAdj+l][k]); | ||
569 | QMF_IM(X_left[l][k]) = QMF_IM(sbr->Xsbr[0][sbr->tHFAdj+l][k]); | ||
570 | } | ||
571 | } | ||
572 | |||
573 | /* perform parametric stereo */ | ||
574 | #ifdef DRM_PS | ||
575 | if (sbr->Is_DRM_SBR) | ||
576 | { | ||
577 | drm_ps_decode(sbr->drm_ps, (sbr->ret > 0), sbr->sample_rate, X_left, X_right); | ||
578 | } else { | ||
579 | #endif | ||
580 | #ifdef PS_DEC | ||
581 | ps_decode(sbr->ps, X_left, X_right); | ||
582 | #endif | ||
583 | #ifdef DRM_PS | ||
584 | } | ||
585 | #endif | ||
586 | |||
587 | /* subband synthesis */ | ||
588 | if (downSampledSBR) | ||
589 | { | ||
590 | sbr_qmf_synthesis_32(sbr, sbr->qmfs[0], X_left, left_channel); | ||
591 | sbr_qmf_synthesis_32(sbr, sbr->qmfs[1], X_right, right_channel); | ||
592 | } else { | ||
593 | sbr_qmf_synthesis_64(sbr, sbr->qmfs[0], X_left, left_channel); | ||
594 | sbr_qmf_synthesis_64(sbr, sbr->qmfs[1], X_right, right_channel); | ||
595 | } | ||
596 | |||
597 | if (sbr->bs_header_flag) | ||
598 | sbr->just_seeked = 0; | ||
599 | |||
600 | if (sbr->header_count != 0 && sbr->ret == 0) | ||
601 | { | ||
602 | ret = sbr_save_prev_data(sbr, 0); | ||
603 | if (ret) return ret; | ||
604 | } | ||
605 | |||
606 | sbr_save_matrix(sbr, 0); | ||
607 | |||
608 | sbr->frame++; | ||
609 | |||
610 | return 0; | ||
611 | } | ||
612 | #endif | ||
613 | |||
614 | #endif | ||