Line | Branch | Exec | Source |
---|---|---|---|
1 | /* | ||
2 | * AAC decoder | ||
3 | * Copyright (c) 2005-2006 Oded Shimon ( ods15 ods15 dyndns org ) | ||
4 | * Copyright (c) 2006-2007 Maxim Gavrilov ( maxim.gavrilov gmail com ) | ||
5 | * Copyright (c) 2008-2013 Alex Converse <alex.converse@gmail.com> | ||
6 | * | ||
7 | * AAC LATM decoder | ||
8 | * Copyright (c) 2008-2010 Paul Kendall <paul@kcbbs.gen.nz> | ||
9 | * Copyright (c) 2010 Janne Grunau <janne-libav@jannau.net> | ||
10 | * | ||
11 | * AAC decoder fixed-point implementation | ||
12 | * Copyright (c) 2013 | ||
13 | * MIPS Technologies, Inc., California. | ||
14 | * | ||
15 | * This file is part of FFmpeg. | ||
16 | * | ||
17 | * FFmpeg is free software; you can redistribute it and/or | ||
18 | * modify it under the terms of the GNU Lesser General Public | ||
19 | * License as published by the Free Software Foundation; either | ||
20 | * version 2.1 of the License, or (at your option) any later version. | ||
21 | * | ||
22 | * FFmpeg is distributed in the hope that it will be useful, | ||
23 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | ||
24 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | ||
25 | * Lesser General Public License for more details. | ||
26 | * | ||
27 | * You should have received a copy of the GNU Lesser General Public | ||
28 | * License along with FFmpeg; if not, write to the Free Software | ||
29 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA | ||
30 | */ | ||
31 | |||
32 | /** | ||
33 | * linear congruential pseudorandom number generator | ||
34 | * | ||
35 | * @param previous_val pointer to the current state of the generator | ||
36 | * | ||
37 | * @return Returns a 32-bit pseudorandom integer | ||
38 | */ | ||
39 | 5944200 | static av_always_inline int lcg_random(unsigned previous_val) | |
40 | { | ||
41 | 5944200 | union { unsigned u; int s; } v = { previous_val * 1664525u + 1013904223 }; | |
42 | 5944200 | return v.s; | |
43 | } | ||
44 | |||
45 | /** | ||
46 | * Decode spectral data; reference: table 4.50. | ||
47 | * Dequantize and scale spectral data; reference: 4.6.3.3. | ||
48 | * | ||
49 | * @param coef array of dequantized, scaled spectral data | ||
50 | * @param sf array of scalefactors or intensity stereo positions | ||
51 | * @param pulse_present set if pulses are present | ||
52 | * @param pulse pointer to pulse data struct | ||
53 | * @param band_type array of the used band type | ||
54 | * | ||
55 | * @return Returns error status. 0 - OK, !0 - error | ||
56 | */ | ||
57 | 93936 | static int AAC_RENAME(decode_spectrum_and_dequant)(AACDecContext *ac, | |
58 | GetBitContext *gb, | ||
59 | const Pulse *pulse, | ||
60 | SingleChannelElement *sce) | ||
61 | { | ||
62 | 93936 | int i, k, g, idx = 0; | |
63 | 93936 | INTFLOAT *coef = sce->AAC_RENAME(coeffs); | |
64 | 93936 | IndividualChannelStream *ics = &sce->ics; | |
65 | 93936 | const int c = 1024 / ics->num_windows; | |
66 | 93936 | const uint16_t *offsets = ics->swb_offset; | |
67 | 93936 | const INTFLOAT *sf = sce->AAC_RENAME(sf); | |
68 | 93936 | const enum BandType *band_type = sce->band_type; | |
69 | 93936 | INTFLOAT *coef_base = coef; | |
70 | |||
71 |
2/2✓ Branch 0 taken 108559 times.
✓ Branch 1 taken 93936 times.
|
202495 | for (g = 0; g < ics->num_windows; g++) |
72 | 108559 | memset(coef + g * 128 + offsets[ics->max_sfb], 0, | |
73 | 108559 | sizeof(INTFLOAT) * (c - offsets[ics->max_sfb])); | |
74 | |||
75 |
2/2✓ Branch 0 taken 99174 times.
✓ Branch 1 taken 93936 times.
|
193110 | for (g = 0; g < ics->num_window_groups; g++) { |
76 | 99174 | unsigned g_len = ics->group_len[g]; | |
77 | |||
78 |
2/2✓ Branch 0 taken 3478656 times.
✓ Branch 1 taken 99174 times.
|
3577830 | for (i = 0; i < ics->max_sfb; i++, idx++) { |
79 | 3478656 | const unsigned cbt_m1 = band_type[idx] - 1; | |
80 | 3478656 | INTFLOAT *cfo = coef + offsets[i]; | |
81 | 3478656 | int off_len = offsets[i + 1] - offsets[i]; | |
82 | int group; | ||
83 | |||
84 |
2/2✓ Branch 0 taken 603212 times.
✓ Branch 1 taken 2875444 times.
|
3478656 | if (cbt_m1 >= INTENSITY_BT2 - 1) { |
85 |
2/2✓ Branch 0 taken 641285 times.
✓ Branch 1 taken 603212 times.
|
1244497 | for (group = 0; group < (AAC_SIGNE)g_len; group++, cfo+=128) { |
86 | 641285 | memset(cfo, 0, off_len * sizeof(*cfo)); | |
87 | } | ||
88 |
2/2✓ Branch 0 taken 281615 times.
✓ Branch 1 taken 2593829 times.
|
2875444 | } else if (cbt_m1 == NOISE_BT - 1) { |
89 |
2/2✓ Branch 0 taken 281642 times.
✓ Branch 1 taken 281615 times.
|
563257 | for (group = 0; group < (AAC_SIGNE)g_len; group++, cfo+=128) { |
90 | INTFLOAT band_energy; | ||
91 | #if USE_FIXED | ||
92 |
2/2✓ Branch 0 taken 2883476 times.
✓ Branch 1 taken 137931 times.
|
3021407 | for (k = 0; k < off_len; k++) { |
93 | 2883476 | ac->random_state = lcg_random(ac->random_state); | |
94 | 2883476 | cfo[k] = ac->random_state >> 3; | |
95 | } | ||
96 | |||
97 | 137931 | band_energy = ac->fdsp->scalarproduct_fixed(cfo, cfo, off_len); | |
98 | 137931 | band_energy = fixed_sqrt(band_energy, 31); | |
99 | 137931 | noise_scale(cfo, sf[idx], band_energy, off_len); | |
100 | #else | ||
101 | float scale; | ||
102 | |||
103 |
2/2✓ Branch 0 taken 3060724 times.
✓ Branch 1 taken 143711 times.
|
3204435 | for (k = 0; k < off_len; k++) { |
104 | 3060724 | ac->random_state = lcg_random(ac->random_state); | |
105 | 3060724 | cfo[k] = ac->random_state; | |
106 | } | ||
107 | |||
108 | 143711 | band_energy = ac->fdsp->scalarproduct_float(cfo, cfo, off_len); | |
109 | 143711 | scale = sf[idx] / sqrtf(band_energy); | |
110 | 143711 | ac->fdsp->vector_fmul_scalar(cfo, cfo, scale, off_len); | |
111 | #endif /* USE_FIXED */ | ||
112 | } | ||
113 | } else { | ||
114 | #if !USE_FIXED | ||
115 | 1810602 | const float *vq = ff_aac_codebook_vector_vals[cbt_m1]; | |
116 | #endif /* !USE_FIXED */ | ||
117 | 2593829 | const VLCElem *vlc_tab = ff_vlc_spectral[cbt_m1]; | |
118 | 2593829 | OPEN_READER(re, gb); | |
119 | |||
120 |
5/5✓ Branch 0 taken 629003 times.
✓ Branch 1 taken 579115 times.
✓ Branch 2 taken 400327 times.
✓ Branch 3 taken 545654 times.
✓ Branch 4 taken 439730 times.
|
2593829 | switch (cbt_m1 >> 1) { |
121 | 629003 | case 0: | |
122 |
2/2✓ Branch 0 taken 656367 times.
✓ Branch 1 taken 629003 times.
|
1285370 | for (group = 0; group < (AAC_SIGNE)g_len; group++, cfo+=128) { |
123 | 656367 | INTFLOAT *cf = cfo; | |
124 | 656367 | int len = off_len; | |
125 | |||
126 | do { | ||
127 | int code; | ||
128 | unsigned cb_idx; | ||
129 | |||
130 | 3269786 | UPDATE_CACHE(re, gb); | |
131 |
2/2✓ Branch 1 taken 111229 times.
✓ Branch 2 taken 3158557 times.
|
3269786 | GET_VLC(code, re, gb, vlc_tab, 8, 2); |
132 | 3269786 | cb_idx = code; | |
133 | #if USE_FIXED | ||
134 | 996762 | cf = DEC_SQUAD(cf, cb_idx); | |
135 | #else | ||
136 | 2273024 | cf = VMUL4(cf, vq, cb_idx, sf + idx); | |
137 | #endif /* USE_FIXED */ | ||
138 |
2/2✓ Branch 0 taken 2613419 times.
✓ Branch 1 taken 656367 times.
|
3269786 | } while (len -= 4); |
139 | } | ||
140 | 629003 | break; | |
141 | |||
142 | 579115 | case 1: | |
143 |
2/2✓ Branch 0 taken 591572 times.
✓ Branch 1 taken 579115 times.
|
1170687 | for (group = 0; group < (AAC_SIGNE)g_len; group++, cfo+=128) { |
144 | 591572 | INTFLOAT *cf = cfo; | |
145 | 591572 | int len = off_len; | |
146 | |||
147 | do { | ||
148 | int code; | ||
149 | unsigned nnz; | ||
150 | unsigned cb_idx; | ||
151 | uint32_t bits; | ||
152 | |||
153 | 2636574 | UPDATE_CACHE(re, gb); | |
154 |
2/2✓ Branch 1 taken 94277 times.
✓ Branch 2 taken 2542297 times.
|
2636574 | GET_VLC(code, re, gb, vlc_tab, 8, 2); |
155 | 2636574 | cb_idx = code; | |
156 | 2636574 | nnz = cb_idx >> 8 & 15; | |
157 |
2/2✓ Branch 0 taken 1734646 times.
✓ Branch 1 taken 901928 times.
|
2636574 | bits = nnz ? GET_CACHE(re, gb) : 0; |
158 | 2636574 | LAST_SKIP_BITS(re, gb, nnz); | |
159 | #if USE_FIXED | ||
160 | 826740 | cf = DEC_UQUAD(cf, cb_idx, bits); | |
161 | #else | ||
162 | 1809834 | cf = VMUL4S(cf, vq, cb_idx, bits, sf + idx); | |
163 | #endif /* USE_FIXED */ | ||
164 |
2/2✓ Branch 0 taken 2045002 times.
✓ Branch 1 taken 591572 times.
|
2636574 | } while (len -= 4); |
165 | } | ||
166 | 579115 | break; | |
167 | |||
168 | 400327 | case 2: | |
169 |
2/2✓ Branch 0 taken 413052 times.
✓ Branch 1 taken 400327 times.
|
813379 | for (group = 0; group < (AAC_SIGNE)g_len; group++, cfo+=128) { |
170 | 413052 | INTFLOAT *cf = cfo; | |
171 | 413052 | int len = off_len; | |
172 | |||
173 | do { | ||
174 | int code; | ||
175 | unsigned cb_idx; | ||
176 | |||
177 | 2505804 | UPDATE_CACHE(re, gb); | |
178 |
2/2✓ Branch 1 taken 87742 times.
✓ Branch 2 taken 2418062 times.
|
2505804 | GET_VLC(code, re, gb, vlc_tab, 8, 2); |
179 | 2505804 | cb_idx = code; | |
180 | #if USE_FIXED | ||
181 | 690688 | cf = DEC_SPAIR(cf, cb_idx); | |
182 | #else | ||
183 | 1815116 | cf = VMUL2(cf, vq, cb_idx, sf + idx); | |
184 | #endif /* USE_FIXED */ | ||
185 |
2/2✓ Branch 0 taken 2092752 times.
✓ Branch 1 taken 413052 times.
|
2505804 | } while (len -= 2); |
186 | } | ||
187 | 400327 | break; | |
188 | |||
189 | 545654 | case 3: | |
190 | case 4: | ||
191 |
2/2✓ Branch 0 taken 564253 times.
✓ Branch 1 taken 545654 times.
|
1109907 | for (group = 0; group < (AAC_SIGNE)g_len; group++, cfo+=128) { |
192 | 564253 | INTFLOAT *cf = cfo; | |
193 | 564253 | int len = off_len; | |
194 | |||
195 | do { | ||
196 | int code; | ||
197 | unsigned nnz; | ||
198 | unsigned cb_idx; | ||
199 | unsigned sign; | ||
200 | |||
201 | 2992674 | UPDATE_CACHE(re, gb); | |
202 |
2/2✓ Branch 1 taken 212568 times.
✓ Branch 2 taken 2780106 times.
|
2992674 | GET_VLC(code, re, gb, vlc_tab, 8, 2); |
203 | 2992674 | cb_idx = code; | |
204 | 2992674 | nnz = cb_idx >> 8 & 15; | |
205 |
2/2✓ Branch 0 taken 2385006 times.
✓ Branch 1 taken 607668 times.
|
2992674 | sign = nnz ? SHOW_UBITS(re, gb, nnz) << (cb_idx >> 12) : 0; |
206 | 2992674 | LAST_SKIP_BITS(re, gb, nnz); | |
207 | #if USE_FIXED | ||
208 | 718254 | cf = DEC_UPAIR(cf, cb_idx, sign); | |
209 | #else | ||
210 | 2274420 | cf = VMUL2S(cf, vq, cb_idx, sign, sf + idx); | |
211 | #endif /* USE_FIXED */ | ||
212 |
2/2✓ Branch 0 taken 2428421 times.
✓ Branch 1 taken 564253 times.
|
2992674 | } while (len -= 2); |
213 | } | ||
214 | 545654 | break; | |
215 | |||
216 | 439730 | default: | |
217 |
2/2✓ Branch 0 taken 449650 times.
✓ Branch 1 taken 439730 times.
|
889380 | for (group = 0; group < (AAC_SIGNE)g_len; group++, cfo+=128) { |
218 | #if USE_FIXED | ||
219 | 120281 | int *icf = cfo; | |
220 | int v; | ||
221 | #else | ||
222 | 329369 | float *cf = cfo; | |
223 | 329369 | uint32_t *icf = (uint32_t *) cf; | |
224 | #endif /* USE_FIXED */ | ||
225 | 449650 | int len = off_len; | |
226 | |||
227 | do { | ||
228 | int code; | ||
229 | unsigned nzt, nnz; | ||
230 | unsigned cb_idx; | ||
231 | uint32_t bits; | ||
232 | int j; | ||
233 | |||
234 | 1489808 | UPDATE_CACHE(re, gb); | |
235 |
2/2✓ Branch 1 taken 425578 times.
✓ Branch 2 taken 1064230 times.
|
1489808 | GET_VLC(code, re, gb, vlc_tab, 8, 2); |
236 | 1489808 | cb_idx = code; | |
237 | |||
238 |
2/2✓ Branch 0 taken 70729 times.
✓ Branch 1 taken 1419079 times.
|
1489808 | if (cb_idx == 0x0000) { |
239 | 70729 | *icf++ = 0; | |
240 | 70729 | *icf++ = 0; | |
241 | 70729 | continue; | |
242 | } | ||
243 | |||
244 | 1419079 | nnz = cb_idx >> 12; | |
245 | 1419079 | nzt = cb_idx >> 8; | |
246 | 1419079 | bits = SHOW_UBITS(re, gb, nnz) << (32-nnz); | |
247 | 1419079 | LAST_SKIP_BITS(re, gb, nnz); | |
248 | |||
249 |
2/2✓ Branch 0 taken 2838158 times.
✓ Branch 1 taken 1419079 times.
|
4257237 | for (j = 0; j < 2; j++) { |
250 |
2/2✓ Branch 0 taken 367260 times.
✓ Branch 1 taken 2470898 times.
|
2838158 | if (nzt & 1<<j) { |
251 | uint32_t b; | ||
252 | int n; | ||
253 | /* The total length of escape_sequence must be < 22 bits according | ||
254 | to the specification (i.e. max is 111111110xxxxxxxxxxxx). */ | ||
255 | 367260 | UPDATE_CACHE(re, gb); | |
256 | 367260 | b = GET_CACHE(re, gb); | |
257 | 367260 | b = 31 - av_log2(~b); | |
258 | |||
259 |
1/2✗ Branch 0 not taken.
✓ Branch 1 taken 367260 times.
|
367260 | if (b > 8) { |
260 | ✗ | av_log(ac->avctx, AV_LOG_ERROR, "error in spectral data, ESC overflow\n"); | |
261 | ✗ | return AVERROR_INVALIDDATA; | |
262 | } | ||
263 | |||
264 | 367260 | SKIP_BITS(re, gb, b + 1); | |
265 | 367260 | b += 4; | |
266 | 367260 | n = (1 << b) + SHOW_UBITS(re, gb, b); | |
267 | 367260 | LAST_SKIP_BITS(re, gb, b); | |
268 | #if USE_FIXED | ||
269 | 67153 | v = n; | |
270 |
2/2✓ Branch 0 taken 33454 times.
✓ Branch 1 taken 33699 times.
|
67153 | if (bits & 1U<<31) |
271 | 33454 | v = -v; | |
272 | 67153 | *icf++ = v; | |
273 | #else | ||
274 | 300107 | *icf++ = ff_cbrt_tab[n] | (bits & 1U<<31); | |
275 | #endif /* USE_FIXED */ | ||
276 | 367260 | bits <<= 1; | |
277 | } else { | ||
278 | #if USE_FIXED | ||
279 | 544503 | v = cb_idx & 15; | |
280 |
2/2✓ Branch 0 taken 258827 times.
✓ Branch 1 taken 285676 times.
|
544503 | if (bits & 1U<<31) |
281 | 258827 | v = -v; | |
282 | 544503 | *icf++ = v; | |
283 | #else | ||
284 | 1926395 | unsigned v = ((const uint32_t*)vq)[cb_idx & 15]; | |
285 | 1926395 | *icf++ = (bits & 1U<<31) | v; | |
286 | #endif /* USE_FIXED */ | ||
287 | 2470898 | bits <<= !!v; | |
288 | } | ||
289 | 2838158 | cb_idx >>= 4; | |
290 | } | ||
291 |
2/2✓ Branch 0 taken 1040158 times.
✓ Branch 1 taken 449650 times.
|
1489808 | } while (len -= 2); |
292 | #if !USE_FIXED | ||
293 | 329369 | ac->fdsp->vector_fmul_scalar(cfo, cfo, sf[idx], off_len); | |
294 | #endif /* !USE_FIXED */ | ||
295 | } | ||
296 | } | ||
297 | |||
298 | 2593829 | CLOSE_READER(re, gb); | |
299 | } | ||
300 | } | ||
301 | 99174 | coef += g_len << 7; | |
302 | } | ||
303 | |||
304 |
2/2✓ Branch 0 taken 1098 times.
✓ Branch 1 taken 92838 times.
|
93936 | if (pulse) { |
305 | 1098 | idx = 0; | |
306 |
2/2✓ Branch 0 taken 2744 times.
✓ Branch 1 taken 1098 times.
|
3842 | for (i = 0; i < pulse->num_pulse; i++) { |
307 | 2744 | INTFLOAT co = coef_base[ pulse->pos[i] ]; | |
308 |
2/2✓ Branch 0 taken 4096 times.
✓ Branch 1 taken 2744 times.
|
6840 | while (offsets[idx + 1] <= pulse->pos[i]) |
309 | 4096 | idx++; | |
310 |
3/4✓ Branch 0 taken 2744 times.
✗ Branch 1 not taken.
✓ Branch 2 taken 2668 times.
✓ Branch 3 taken 76 times.
|
2744 | if (band_type[idx] != NOISE_BT && sf[idx]) { |
311 | 2668 | INTFLOAT ico = -pulse->amp[i]; | |
312 | #if USE_FIXED | ||
313 |
2/2✓ Branch 0 taken 730 times.
✓ Branch 1 taken 134 times.
|
864 | if (co) { |
314 |
2/2✓ Branch 0 taken 379 times.
✓ Branch 1 taken 351 times.
|
730 | ico = co + (co > 0 ? -ico : ico); |
315 | } | ||
316 | 864 | coef_base[ pulse->pos[i] ] = ico; | |
317 | #else | ||
318 |
2/2✓ Branch 0 taken 1564 times.
✓ Branch 1 taken 240 times.
|
1804 | if (co) { |
319 | 1564 | co /= sf[idx]; | |
320 |
2/2✓ Branch 0 taken 799 times.
✓ Branch 1 taken 765 times.
|
1564 | ico = co / sqrtf(sqrtf(fabsf(co))) + (co > 0 ? -ico : ico); |
321 | } | ||
322 | 1804 | coef_base[ pulse->pos[i] ] = cbrtf(fabsf(ico)) * ico * sf[idx]; | |
323 | #endif /* USE_FIXED */ | ||
324 | } | ||
325 | } | ||
326 | } | ||
327 | #if USE_FIXED | ||
328 | 29050 | coef = coef_base; | |
329 | 29050 | idx = 0; | |
330 |
2/2✓ Branch 0 taken 31382 times.
✓ Branch 1 taken 29050 times.
|
60432 | for (g = 0; g < ics->num_window_groups; g++) { |
331 | 31382 | unsigned g_len = ics->group_len[g]; | |
332 | |||
333 |
2/2✓ Branch 0 taken 1053985 times.
✓ Branch 1 taken 31382 times.
|
1085367 | for (i = 0; i < ics->max_sfb; i++, idx++) { |
334 | 1053985 | const unsigned cbt_m1 = band_type[idx] - 1; | |
335 | 1053985 | int *cfo = coef + offsets[i]; | |
336 | 1053985 | int off_len = offsets[i + 1] - offsets[i]; | |
337 | int group; | ||
338 | |||
339 |
2/2✓ Branch 0 taken 783227 times.
✓ Branch 1 taken 270758 times.
|
1053985 | if (cbt_m1 < NOISE_BT - 1) { |
340 |
2/2✓ Branch 0 taken 798771 times.
✓ Branch 1 taken 783227 times.
|
1581998 | for (group = 0; group < (int)g_len; group++, cfo+=128) { |
341 | 798771 | vector_pow43(cfo, off_len); | |
342 | 798771 | subband_scale(cfo, cfo, sf[idx], 34, off_len, ac->avctx); | |
343 | } | ||
344 | } | ||
345 | } | ||
346 | 31382 | coef += g_len << 7; | |
347 | } | ||
348 | #endif /* USE_FIXED */ | ||
349 | 93936 | return 0; | |
350 | } | ||
351 | |||
352 | /** | ||
353 | * Decode coupling_channel_element; reference: table 4.8. | ||
354 | * | ||
355 | * @return Returns error status. 0 - OK, !0 - error | ||
356 | */ | ||
357 | 1174 | static int AAC_RENAME(decode_cce)(AACDecContext *ac, GetBitContext *gb, ChannelElement *che) | |
358 | { | ||
359 | 1174 | int num_gain = 0; | |
360 | int c, g, sfb, ret; | ||
361 | int sign; | ||
362 | INTFLOAT scale; | ||
363 | 1174 | SingleChannelElement *sce = &che->ch[0]; | |
364 | 1174 | ChannelCoupling *coup = &che->coup; | |
365 | |||
366 | 1174 | coup->coupling_point = 2 * get_bits1(gb); | |
367 | 1174 | coup->num_coupled = get_bits(gb, 3); | |
368 |
2/2✓ Branch 0 taken 2741 times.
✓ Branch 1 taken 1174 times.
|
3915 | for (c = 0; c <= coup->num_coupled; c++) { |
369 | 2741 | num_gain++; | |
370 | 2741 | coup->type[c] = get_bits1(gb) ? TYPE_CPE : TYPE_SCE; | |
371 | 2741 | coup->id_select[c] = get_bits(gb, 4); | |
372 |
2/2✓ Branch 0 taken 2348 times.
✓ Branch 1 taken 393 times.
|
2741 | if (coup->type[c] == TYPE_CPE) { |
373 | 2348 | coup->ch_select[c] = get_bits(gb, 2); | |
374 |
2/2✓ Branch 0 taken 1967 times.
✓ Branch 1 taken 381 times.
|
2348 | if (coup->ch_select[c] == 3) |
375 | 1967 | num_gain++; | |
376 | } else | ||
377 | 393 | coup->ch_select[c] = 2; | |
378 | } | ||
379 |
4/4✓ Branch 1 taken 602 times.
✓ Branch 2 taken 572 times.
✓ Branch 3 taken 152 times.
✓ Branch 4 taken 450 times.
|
1174 | coup->coupling_point += get_bits1(gb) || (coup->coupling_point >> 1); |
380 | |||
381 | 1174 | sign = get_bits(gb, 1); | |
382 | #if USE_FIXED | ||
383 | 130 | scale = get_bits(gb, 2); | |
384 | #else | ||
385 | 1044 | scale = cce_scale[get_bits(gb, 2)]; | |
386 | #endif | ||
387 | |||
388 |
1/2✗ Branch 1 not taken.
✓ Branch 2 taken 1174 times.
|
1174 | if ((ret = ff_aac_decode_ics(ac, sce, gb, 0, 0))) |
389 | ✗ | return ret; | |
390 | |||
391 |
2/2✓ Branch 0 taken 4708 times.
✓ Branch 1 taken 1174 times.
|
5882 | for (c = 0; c < num_gain; c++) { |
392 | 4708 | int idx = 0; | |
393 | 4708 | int cge = 1; | |
394 | 4708 | int gain = 0; | |
395 | 4708 | INTFLOAT gain_cache = FIXR10(1.); | |
396 |
2/2✓ Branch 0 taken 3534 times.
✓ Branch 1 taken 1174 times.
|
4708 | if (c) { |
397 |
2/2✓ Branch 0 taken 1962 times.
✓ Branch 1 taken 1572 times.
|
3534 | cge = coup->coupling_point == AFTER_IMDCT ? 1 : get_bits1(gb); |
398 |
2/2✓ Branch 0 taken 1973 times.
✓ Branch 1 taken 1561 times.
|
3534 | gain = cge ? get_vlc2(gb, ff_vlc_scalefactors, 7, 3) - 60: 0; |
399 | 3534 | gain_cache = GET_GAIN(scale, gain); | |
400 | #if USE_FIXED | ||
401 |
1/2✗ Branch 0 not taken.
✓ Branch 1 taken 520 times.
|
520 | if ((abs(gain_cache)-1024) >> 3 > 30) |
402 | ✗ | return AVERROR(ERANGE); | |
403 | #endif | ||
404 | } | ||
405 |
2/2✓ Branch 0 taken 1965 times.
✓ Branch 1 taken 2743 times.
|
4708 | if (coup->coupling_point == AFTER_IMDCT) { |
406 | 1965 | coup->gain[c][0] = gain_cache; | |
407 | } else { | ||
408 |
2/2✓ Branch 0 taken 2743 times.
✓ Branch 1 taken 2743 times.
|
5486 | for (g = 0; g < sce->ics.num_window_groups; g++) { |
409 |
2/2✓ Branch 0 taken 109720 times.
✓ Branch 1 taken 2743 times.
|
112463 | for (sfb = 0; sfb < sce->ics.max_sfb; sfb++, idx++) { |
410 |
2/2✓ Branch 0 taken 5196 times.
✓ Branch 1 taken 104524 times.
|
109720 | if (sce->band_type[idx] != ZERO_BT) { |
411 |
2/2✓ Branch 0 taken 2879 times.
✓ Branch 1 taken 2317 times.
|
5196 | if (!cge) { |
412 | 2879 | int t = get_vlc2(gb, ff_vlc_scalefactors, 7, 3) - 60; | |
413 |
2/2✓ Branch 0 taken 2724 times.
✓ Branch 1 taken 155 times.
|
2879 | if (t) { |
414 | 2724 | int s = 1; | |
415 | 2724 | t = gain += t; | |
416 |
2/2✓ Branch 0 taken 1666 times.
✓ Branch 1 taken 1058 times.
|
2724 | if (sign) { |
417 | 1666 | s -= 2 * (t & 0x1); | |
418 | 1666 | t >>= 1; | |
419 | } | ||
420 | 2724 | gain_cache = GET_GAIN(scale, t) * s; | |
421 | #if USE_FIXED | ||
422 | ✗ | if ((abs(gain_cache)-1024) >> 3 > 30) | |
423 | ✗ | return AVERROR(ERANGE); | |
424 | #endif | ||
425 | } | ||
426 | } | ||
427 | 5196 | coup->gain[c][idx] = gain_cache; | |
428 | } | ||
429 | } | ||
430 | } | ||
431 | } | ||
432 | } | ||
433 | 1174 | return 0; | |
434 | } | ||
435 | |||
436 | 298 | static av_cold void AAC_RENAME(aac_proc_init)(AACDecProc *aac_proc) | |
437 | { | ||
438 | #define SET(member) aac_proc->member = AAC_RENAME(member) | ||
439 | 298 | SET(decode_spectrum_and_dequant); | |
440 | 298 | SET(decode_cce); | |
441 | #undef SET | ||
442 | #define SET(member) aac_proc->member = AV_JOIN(ff_aac_, AAC_RENAME(member)); | ||
443 | 298 | SET(sbr_ctx_alloc_init); | |
444 | 298 | SET(sbr_decode_extension); | |
445 | 298 | SET(sbr_apply); | |
446 | 298 | SET(sbr_ctx_close); | |
447 | #undef SET | ||
448 | 298 | } | |
449 |