FFmpeg coverage

Directory: ../../../ffmpeg/
File: src/libavcodec/aac/aacdec.c
Date: 2024-05-03 15:42:48
Exec Total Coverage
Lines: 986 1352 72.9%
Functions: 47 49 95.9%
Branches: 651 1018 63.9%
Line Branch Exec Source
1 /*
2 * Common parts of the AAC decoders
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 /* We use several quantization functions here (Q31, Q30),
33 * for which we need this to be defined for them to work as expected. */
34 #define USE_FIXED 1
35
36 #include "config_components.h"
37
38 #include <limits.h>
39 #include <stddef.h>
40
41 #include "aacdec.h"
42 #include "aacdec_tab.h"
43
44 #include "libavcodec/aac.h"
45 #include "libavcodec/aacsbr.h"
46 #include "libavcodec/aactab.h"
47 #include "libavcodec/adts_header.h"
48
49 #include "libavcodec/avcodec.h"
50 #include "libavcodec/internal.h"
51 #include "libavcodec/codec_internal.h"
52 #include "libavcodec/decode.h"
53 #include "libavcodec/profiles.h"
54
55 #include "libavutil/attributes.h"
56 #include "libavutil/error.h"
57 #include "libavutil/log.h"
58 #include "libavutil/macros.h"
59 #include "libavutil/mem.h"
60 #include "libavutil/opt.h"
61 #include "libavutil/tx.h"
62 #include "libavutil/version.h"
63 #include "libavutil/thread.h"
64
65 /*
66 * supported tools
67 *
68 * Support? Name
69 * N (code in SoC repo) gain control
70 * Y block switching
71 * Y window shapes - standard
72 * N window shapes - Low Delay
73 * Y filterbank - standard
74 * N (code in SoC repo) filterbank - Scalable Sample Rate
75 * Y Temporal Noise Shaping
76 * Y Long Term Prediction
77 * Y intensity stereo
78 * Y channel coupling
79 * Y frequency domain prediction
80 * Y Perceptual Noise Substitution
81 * Y Mid/Side stereo
82 * N Scalable Inverse AAC Quantization
83 * N Frequency Selective Switch
84 * N upsampling filter
85 * Y quantization & coding - AAC
86 * N quantization & coding - TwinVQ
87 * N quantization & coding - BSAC
88 * N AAC Error Resilience tools
89 * N Error Resilience payload syntax
90 * N Error Protection tool
91 * N CELP
92 * N Silence Compression
93 * N HVXC
94 * N HVXC 4kbits/s VR
95 * N Structured Audio tools
96 * N Structured Audio Sample Bank Format
97 * N MIDI
98 * N Harmonic and Individual Lines plus Noise
99 * N Text-To-Speech Interface
100 * Y Spectral Band Replication
101 * Y (not in this code) Layer-1
102 * Y (not in this code) Layer-2
103 * Y (not in this code) Layer-3
104 * N SinuSoidal Coding (Transient, Sinusoid, Noise)
105 * Y Parametric Stereo
106 * N Direct Stream Transfer
107 * Y (not in fixed point code) Enhanced AAC Low Delay (ER AAC ELD)
108 *
109 * Note: - HE AAC v1 comprises LC AAC with Spectral Band Replication.
110 * - HE AAC v2 comprises LC AAC with Spectral Band Replication and
111 Parametric Stereo.
112 */
113
114 static int output_configure(AACDecContext *ac,
115 uint8_t layout_map[MAX_ELEM_ID*4][3], int tags,
116 enum OCStatus oc_type, int get_new_frame);
117
118 #define overread_err "Input buffer exhausted before END element found\n"
119
120 549 static int count_channels(uint8_t (*layout)[3], int tags)
121 {
122 549 int i, sum = 0;
123
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 1660 for (i = 0; i < tags; i++) {
124 1111 int syn_ele = layout[i][0];
125 1111 int pos = layout[i][2];
126
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 2222 sum += (1 + (syn_ele == TYPE_CPE)) *
127
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 1111 (pos != AAC_CHANNEL_OFF && pos != AAC_CHANNEL_CC);
128 }
129 549 return sum;
130 }
131
132 /**
133 * Check for the channel element in the current channel position configuration.
134 * If it exists, make sure the appropriate element is allocated and map the
135 * channel order to match the internal FFmpeg channel layout.
136 *
137 * @param che_pos current channel position configuration
138 * @param type channel element type
139 * @param id channel element id
140 * @param channels count of the number of channels in the configuration
141 *
142 * @return Returns error status. 0 - OK, !0 - error
143 */
144 4604 static av_cold int che_configure(AACDecContext *ac,
145 enum ChannelPosition che_pos,
146 int type, int id, int *channels)
147 {
148
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 4604 if (*channels >= MAX_CHANNELS)
149 ✗ return AVERROR_INVALIDDATA;
150
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 4604 if (che_pos) {
151
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 4604 if (!ac->che[type][id]) {
152 int ret;
153
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 369 if (ac->is_fixed)
154 35 ret = ff_aac_sbr_ctx_alloc_init_fixed(ac, &ac->che[type][id], type);
155 else
156 334 ret = ff_aac_sbr_ctx_alloc_init(ac, &ac->che[type][id], type);
157
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 369 if (ret < 0)
158 ✗ return ret;
159 }
160
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 4604 if (type != TYPE_CCE) {
161
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 4596 if (*channels >= MAX_CHANNELS - (type == TYPE_CPE || (type == TYPE_SCE && ac->oc[1].m4ac.ps == 1))) {
162 ✗ av_log(ac->avctx, AV_LOG_ERROR, "Too many channels\n");
163 ✗ return AVERROR_INVALIDDATA;
164 }
165 4596 ac->output_element[(*channels)++] = &ac->che[type][id]->ch[0];
166
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 4596 if (type == TYPE_CPE ||
167
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 775 (type == TYPE_SCE && ac->oc[1].m4ac.ps == 1)) {
168 4120 ac->output_element[(*channels)++] = &ac->che[type][id]->ch[1];
169 }
170 }
171 } else {
172 ✗ if (ac->che[type][id]) {
173 ✗ if (ac->is_fixed)
174 ✗ ff_aac_sbr_ctx_close_fixed(ac->che[type][id]);
175 else
176 ✗ ff_aac_sbr_ctx_close(ac->che[type][id]);
177 }
178 ✗ av_freep(&ac->che[type][id]);
179 }
180 4604 return 0;
181 }
182
183 50116 static int frame_configure_elements(AVCodecContext *avctx)
184 {
185 50116 AACDecContext *ac = avctx->priv_data;
186 int type, id, ch, ret;
187
188 /* set channel pointers to internal buffers by default */
189
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 250580 for (type = 0; type < 4; type++) {
190
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 3407888 for (id = 0; id < MAX_ELEM_ID; id++) {
191 3207424 ChannelElement *che = ac->che[type][id];
192
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 3207424 if (che) {
193 63496 che->ch[0].output = che->ch[0].ret_buf;
194 63496 che->ch[1].output = che->ch[1].ret_buf;
195 }
196 }
197 }
198
199 /* get output buffer */
200 50116 av_frame_unref(ac->frame);
201
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 50116 if (!avctx->ch_layout.nb_channels)
202 ✗ return 1;
203
204 50116 ac->frame->nb_samples = 2048;
205
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 50116 if ((ret = ff_get_buffer(avctx, ac->frame, 0)) < 0)
206 ✗ return ret;
207
208 /* map output channel pointers to AVFrame data */
209
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 144889 for (ch = 0; ch < avctx->ch_layout.nb_channels; ch++) {
210
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 94773 if (ac->output_element[ch])
211 94773 ac->output_element[ch]->output = (void *)ac->frame->extended_data[ch];
212 }
213
214 50116 return 0;
215 }
216
217 struct elem_to_channel {
218 uint64_t av_position;
219 uint8_t syn_ele;
220 uint8_t elem_id;
221 uint8_t aac_position;
222 };
223
224 3758 static int assign_pair(struct elem_to_channel e2c_vec[MAX_ELEM_ID],
225 uint8_t (*layout_map)[3], int offset, uint64_t left,
226 uint64_t right, int pos, uint64_t *layout)
227 {
228
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 3758 if (layout_map[offset][0] == TYPE_CPE) {
229 3754 e2c_vec[offset] = (struct elem_to_channel) {
230 3754 .av_position = left | right,
231 .syn_ele = TYPE_CPE,
232 3754 .elem_id = layout_map[offset][1],
233 .aac_position = pos
234 };
235
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 3754 if (e2c_vec[offset].av_position != UINT64_MAX)
236 3754 *layout |= e2c_vec[offset].av_position;
237
238 3754 return 1;
239 } else {
240 4 e2c_vec[offset] = (struct elem_to_channel) {
241 .av_position = left,
242 .syn_ele = TYPE_SCE,
243 4 .elem_id = layout_map[offset][1],
244 .aac_position = pos
245 };
246 4 e2c_vec[offset + 1] = (struct elem_to_channel) {
247 .av_position = right,
248 .syn_ele = TYPE_SCE,
249 4 .elem_id = layout_map[offset + 1][1],
250 .aac_position = pos
251 };
252
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 4 if (left != UINT64_MAX)
253 4 *layout |= left;
254
255
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 4 if (right != UINT64_MAX)
256 4 *layout |= right;
257
258 4 return 2;
259 }
260 }
261
262 17612 static int count_paired_channels(uint8_t (*layout_map)[3], int tags, int pos,
263 int current)
264 {
265 17612 int num_pos_channels = 0;
266 17612 int first_cpe = 0;
267 17612 int sce_parity = 0;
268 int i;
269
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 22208 for (i = current; i < tags; i++) {
270
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 4869 if (layout_map[i][2] != pos)
271 273 break;
272
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 4596 if (layout_map[i][0] == TYPE_CPE) {
273
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 3754 if (sce_parity) {
274
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 71 if (pos == AAC_CHANNEL_FRONT && !first_cpe) {
275 71 sce_parity = 0;
276 } else {
277 ✗ return -1;
278 }
279 }
280 3754 num_pos_channels += 2;
281 3754 first_cpe = 1;
282 } else {
283 842 num_pos_channels++;
284 842 sce_parity ^= (pos != AAC_CHANNEL_LFE);
285 }
286 }
287
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 17612 if (sce_parity &&
288
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 696 (pos == AAC_CHANNEL_FRONT && first_cpe))
289 ✗ return -1;
290
291 17612 return num_pos_channels;
292 }
293
294 17612 static int assign_channels(struct elem_to_channel e2c_vec[MAX_ELEM_ID], uint8_t (*layout_map)[3],
295 uint64_t *layout, int tags, int layer, int pos, int *current)
296 {
297 17612 int i = *current, j = 0;
298 17612 int nb_channels = count_paired_channels(layout_map, tags, pos, i);
299
300
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 17612 if (nb_channels < 0 || nb_channels > 5)
301 ✗ return 0;
302
303
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 17612 if (pos == AAC_CHANNEL_LFE) {
304
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 4470 while (nb_channels) {
305
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 67 if (ff_aac_channel_map[layer][pos - 1][j] == AV_CHAN_NONE)
306 ✗ return -1;
307 67 e2c_vec[i] = (struct elem_to_channel) {
308 67 .av_position = 1ULL << ff_aac_channel_map[layer][pos - 1][j],
309 67 .syn_ele = layout_map[i][0],
310 67 .elem_id = layout_map[i][1],
311 .aac_position = pos
312 };
313 67 *layout |= e2c_vec[i].av_position;
314 67 i++;
315 67 j++;
316 67 nb_channels--;
317 }
318 4403 *current = i;
319
320 4403 return 0;
321 }
322
323
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 13976 while (nb_channels & 1) {
324
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 767 if (ff_aac_channel_map[layer][pos - 1][0] == AV_CHAN_NONE)
325 ✗ return -1;
326
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 767 if (ff_aac_channel_map[layer][pos - 1][0] == AV_CHAN_UNUSED)
327 ✗ break;
328 767 e2c_vec[i] = (struct elem_to_channel) {
329 767 .av_position = 1ULL << ff_aac_channel_map[layer][pos - 1][0],
330 767 .syn_ele = layout_map[i][0],
331 767 .elem_id = layout_map[i][1],
332 .aac_position = pos
333 };
334 767 *layout |= e2c_vec[i].av_position;
335 767 i++;
336 767 nb_channels--;
337 }
338
339
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 13209 j = (pos != AAC_CHANNEL_SIDE) && nb_channels <= 3 ? 3 : 1;
340
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 16967 while (nb_channels >= 2) {
341
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 3758 if (ff_aac_channel_map[layer][pos - 1][j] == AV_CHAN_NONE ||
342
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 3758 ff_aac_channel_map[layer][pos - 1][j+1] == AV_CHAN_NONE)
343 ✗ return -1;
344 7516 i += assign_pair(e2c_vec, layout_map, i,
345 3758 1ULL << ff_aac_channel_map[layer][pos - 1][j],
346 3758 1ULL << ff_aac_channel_map[layer][pos - 1][j+1],
347 pos, layout);
348 3758 j += 2;
349 3758 nb_channels -= 2;
350 }
351
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 13209 while (nb_channels & 1) {
352 ✗ if (ff_aac_channel_map[layer][pos - 1][5] == AV_CHAN_NONE)
353 ✗ return -1;
354 ✗ e2c_vec[i] = (struct elem_to_channel) {
355 ✗ .av_position = 1ULL << ff_aac_channel_map[layer][pos - 1][5],
356 ✗ .syn_ele = layout_map[i][0],
357 ✗ .elem_id = layout_map[i][1],
358 .aac_position = pos
359 };
360 ✗ *layout |= e2c_vec[i].av_position;
361 ✗ i++;
362 ✗ nb_channels--;
363 }
364
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 13209 if (nb_channels)
365 ✗ return -1;
366
367 13209 *current = i;
368
369 13209 return 0;
370 }
371
372 4387 static uint64_t sniff_channel_order(uint8_t (*layout_map)[3], int tags)
373 {
374 int i, n, total_non_cc_elements;
375 4387 struct elem_to_channel e2c_vec[4 * MAX_ELEM_ID] = { { 0 } };
376 4387 uint64_t layout = 0;
377
378
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 4387 if (FF_ARRAY_ELEMS(e2c_vec) < tags)
379 ✗ return 0;
380
381
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 8790 for (n = 0, i = 0; n < 3 && i < tags; n++) {
382 4403 int ret = assign_channels(e2c_vec, layout_map, &layout, tags, n, AAC_CHANNEL_FRONT, &i);
383
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 4403 if (ret < 0)
384 ✗ return 0;
385 4403 ret = assign_channels(e2c_vec, layout_map, &layout, tags, n, AAC_CHANNEL_SIDE, &i);
386
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 4403 if (ret < 0)
387 ✗ return 0;
388 4403 ret = assign_channels(e2c_vec, layout_map, &layout, tags, n, AAC_CHANNEL_BACK, &i);
389
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 4403 if (ret < 0)
390 ✗ return 0;
391 4403 ret = assign_channels(e2c_vec, layout_map, &layout, tags, n, AAC_CHANNEL_LFE, &i);
392
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 4403 if (ret < 0)
393 ✗ return 0;
394 }
395
396 4387 total_non_cc_elements = n = i;
397
398
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 4387 if (layout == AV_CH_LAYOUT_22POINT2) {
399 // For 22.2 reorder the result as needed
400 ✗ FFSWAP(struct elem_to_channel, e2c_vec[2], e2c_vec[0]); // FL & FR first (final), FC third
401 ✗ FFSWAP(struct elem_to_channel, e2c_vec[2], e2c_vec[1]); // FC second (final), FLc & FRc third
402 ✗ FFSWAP(struct elem_to_channel, e2c_vec[6], e2c_vec[2]); // LFE1 third (final), FLc & FRc seventh
403 ✗ FFSWAP(struct elem_to_channel, e2c_vec[4], e2c_vec[3]); // BL & BR fourth (final), SiL & SiR fifth
404 ✗ FFSWAP(struct elem_to_channel, e2c_vec[6], e2c_vec[4]); // FLc & FRc fifth (final), SiL & SiR seventh
405 ✗ FFSWAP(struct elem_to_channel, e2c_vec[7], e2c_vec[6]); // LFE2 seventh (final), SiL & SiR eight (final)
406 ✗ FFSWAP(struct elem_to_channel, e2c_vec[9], e2c_vec[8]); // TpFL & TpFR ninth (final), TFC tenth (final)
407 ✗ FFSWAP(struct elem_to_channel, e2c_vec[11], e2c_vec[10]); // TC eleventh (final), TpSiL & TpSiR twelth
408 ✗ FFSWAP(struct elem_to_channel, e2c_vec[12], e2c_vec[11]); // TpBL & TpBR twelth (final), TpSiL & TpSiR thirteenth (final)
409 } else {
410 // For everything else, utilize the AV channel position define as a
411 // stable sort.
412 do {
413 4466 int next_n = 0;
414
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 4809 for (i = 1; i < n; i++)
415
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 343 if (e2c_vec[i - 1].av_position > e2c_vec[i].av_position) {
416 146 FFSWAP(struct elem_to_channel, e2c_vec[i - 1], e2c_vec[i]);
417 146 next_n = i;
418 }
419 4466 n = next_n;
420
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 4466 } while (n > 0);
421
422 }
423
424
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 8983 for (i = 0; i < total_non_cc_elements; i++) {
425 4596 layout_map[i][0] = e2c_vec[i].syn_ele;
426 4596 layout_map[i][1] = e2c_vec[i].elem_id;
427 4596 layout_map[i][2] = e2c_vec[i].aac_position;
428 }
429
430 4387 return layout;
431 }
432
433 /**
434 * Save current output configuration if and only if it has been locked.
435 */
436 4121 static int push_output_configuration(AACDecContext *ac)
437 {
438 4121 int pushed = 0;
439
440
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 4121 if (ac->oc[1].status == OC_LOCKED || ac->oc[0].status == OC_NONE) {
441 4121 ac->oc[0] = ac->oc[1];
442 4121 pushed = 1;
443 }
444 4121 ac->oc[1].status = OC_NONE;
445 4121 return pushed;
446 }
447
448 /**
449 * Restore the previous output configuration if and only if the current
450 * configuration is unlocked.
451 */
452 ✗ static void pop_output_configuration(AACDecContext *ac)
453 {
454 ✗ if (ac->oc[1].status != OC_LOCKED && ac->oc[0].status != OC_NONE) {
455 ✗ ac->oc[1] = ac->oc[0];
456 ✗ ac->avctx->ch_layout = ac->oc[1].ch_layout;
457 ✗ output_configure(ac, ac->oc[1].layout_map, ac->oc[1].layout_map_tags,
458 ac->oc[1].status, 0);
459 }
460 ✗ }
461
462 /**
463 * Configure output channel order based on the current program
464 * configuration element.
465 *
466 * @return Returns error status. 0 - OK, !0 - error
467 */
468 4387 static int output_configure(AACDecContext *ac,
469 uint8_t layout_map[MAX_ELEM_ID * 4][3], int tags,
470 enum OCStatus oc_type, int get_new_frame)
471 {
472 4387 AVCodecContext *avctx = ac->avctx;
473 4387 int i, channels = 0, ret;
474 4387 uint64_t layout = 0;
475 4387 uint8_t id_map[TYPE_END][MAX_ELEM_ID] = {{ 0 }};
476 4387 uint8_t type_counts[TYPE_END] = { 0 };
477
478
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 4387 if (ac->oc[1].layout_map != layout_map) {
479 4375 memcpy(ac->oc[1].layout_map, layout_map, tags * sizeof(layout_map[0]));
480 4375 ac->oc[1].layout_map_tags = tags;
481 }
482
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 8991 for (i = 0; i < tags; i++) {
483 4604 int type = layout_map[i][0];
484 4604 int id = layout_map[i][1];
485 4604 id_map[type][id] = type_counts[type]++;
486
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 4604 if (id_map[type][id] >= MAX_ELEM_ID) {
487 ✗ avpriv_request_sample(ac->avctx, "Too large remapped id");
488 ✗ return AVERROR_PATCHWELCOME;
489 }
490 }
491 // Try to sniff a reasonable channel order, otherwise output the
492 // channels in the order the PCE declared them.
493
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 4387 if (ac->output_channel_order == CHANNEL_ORDER_DEFAULT)
494 4387 layout = sniff_channel_order(layout_map, tags);
495
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 8991 for (i = 0; i < tags; i++) {
496 4604 int type = layout_map[i][0];
497 4604 int id = layout_map[i][1];
498 4604 int iid = id_map[type][id];
499 4604 int position = layout_map[i][2];
500 // Allocate or free elements depending on if they are in the
501 // current program configuration.
502 4604 ret = che_configure(ac, position, type, iid, &channels);
503
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 4604 if (ret < 0)
504 ✗ return ret;
505 4604 ac->tag_che_map[type][id] = ac->che[type][iid];
506 }
507
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 4387 if (ac->oc[1].m4ac.ps == 1 && channels == 2) {
508
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 366 if (layout == AV_CH_FRONT_CENTER) {
509 366 layout = AV_CH_FRONT_LEFT|AV_CH_FRONT_RIGHT;
510 } else {
511 ✗ layout = 0;
512 }
513 }
514
515 4387 av_channel_layout_uninit(&ac->oc[1].ch_layout);
516
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 4387 if (layout)
517 4387 av_channel_layout_from_mask(&ac->oc[1].ch_layout, layout);
518 else {
519 ✗ ac->oc[1].ch_layout.order = AV_CHANNEL_ORDER_UNSPEC;
520 ✗ ac->oc[1].ch_layout.nb_channels = channels;
521 }
522
523 4387 av_channel_layout_copy(&avctx->ch_layout, &ac->oc[1].ch_layout);
524 4387 ac->oc[1].status = oc_type;
525
526
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 4387 if (get_new_frame) {
527
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 12 if ((ret = frame_configure_elements(ac->avctx)) < 0)
528 ✗ return ret;
529 }
530
531 4387 return 0;
532 }
533
534 9 static void flush(AVCodecContext *avctx)
535 {
536 9 AACDecContext *ac= avctx->priv_data;
537 int type, i, j;
538
539
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 45 for (type = 3; type >= 0; type--) {
540
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 612 for (i = 0; i < MAX_ELEM_ID; i++) {
541 576 ChannelElement *che = ac->che[type][i];
542
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 576 if (che) {
543
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 27 for (j = 0; j <= 1; j++) {
544 18 memset(che->ch[j].saved, 0, sizeof(che->ch[j].saved));
545 }
546 }
547 }
548 }
549 9 }
550
551 /**
552 * Set up channel positions based on a default channel configuration
553 * as specified in table 1.17.
554 *
555 * @return Returns error status. 0 - OK, !0 - error
556 */
557 4654 static int set_default_channel_config(AACDecContext *ac, AVCodecContext *avctx,
558 uint8_t (*layout_map)[3],
559 int *tags,
560 int channel_config)
561 {
562
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 4654 if (channel_config < 1 || (channel_config > 7 && channel_config < 11) ||
563 channel_config > 14) {
564 ✗ av_log(avctx, AV_LOG_ERROR,
565 "invalid default channel configuration (%d)\n",
566 channel_config);
567 ✗ return AVERROR_INVALIDDATA;
568 }
569 4654 *tags = ff_tags_per_config[channel_config];
570 4654 memcpy(layout_map, ff_aac_channel_layout_map[channel_config - 1],
571 4654 *tags * sizeof(*layout_map));
572
573 /*
574 * AAC specification has 7.1(wide) as a default layout for 8-channel streams.
575 * However, at least Nero AAC encoder encodes 7.1 streams using the default
576 * channel config 7, mapping the side channels of the original audio stream
577 * to the second AAC_CHANNEL_FRONT pair in the AAC stream. Similarly, e.g. FAAD
578 * decodes the second AAC_CHANNEL_FRONT pair as side channels, therefore decoding
579 * the incorrect streams as if they were correct (and as the encoder intended).
580 *
581 * As actual intended 7.1(wide) streams are very rare, default to assuming a
582 * 7.1 layout was intended.
583 */
584
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 4654 if (channel_config == 7 && avctx->strict_std_compliance < FF_COMPLIANCE_STRICT) {
585 ✗ layout_map[2][2] = AAC_CHANNEL_BACK;
586
587 ✗ if (!ac || !ac->warned_71_wide++) {
588 ✗ av_log(avctx, AV_LOG_INFO, "Assuming an incorrectly encoded 7.1 channel layout"
589 " instead of a spec-compliant 7.1(wide) layout, use -strict %d to decode"
590 " according to the specification instead.\n", FF_COMPLIANCE_STRICT);
591 }
592 }
593
594 4654 return 0;
595 }
596
597 63150 static ChannelElement *get_che(AACDecContext *ac, int type, int elem_id)
598 {
599 /* For PCE based channel configurations map the channels solely based
600 * on tags. */
601
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 63150 if (!ac->oc[1].m4ac.chan_config) {
602 24124 return ac->tag_che_map[type][elem_id];
603 }
604 // Allow single CPE stereo files to be signalled with mono configuration.
605
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 39026 if (!ac->tags_mapped && type == TYPE_CPE &&
606
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 20640 ac->oc[1].m4ac.chan_config == 1) {
607 uint8_t layout_map[MAX_ELEM_ID*4][3];
608 int layout_map_tags;
609 ✗ push_output_configuration(ac);
610
611 ✗ av_log(ac->avctx, AV_LOG_DEBUG, "mono with CPE\n");
612
613 ✗ if (set_default_channel_config(ac, ac->avctx, layout_map,
614 &layout_map_tags, 2) < 0)
615 ✗ return NULL;
616 ✗ if (output_configure(ac, layout_map, layout_map_tags,
617 OC_TRIAL_FRAME, 1) < 0)
618 ✗ return NULL;
619
620 ✗ ac->oc[1].m4ac.chan_config = 2;
621 ✗ ac->oc[1].m4ac.ps = 0;
622 }
623 // And vice-versa
624
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 39026 if (!ac->tags_mapped && type == TYPE_SCE &&
625
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 15926 ac->oc[1].m4ac.chan_config == 2) {
626 uint8_t layout_map[MAX_ELEM_ID * 4][3];
627 int layout_map_tags;
628 ✗ push_output_configuration(ac);
629
630 ✗ av_log(ac->avctx, AV_LOG_DEBUG, "stereo with SCE\n");
631
632 ✗ layout_map_tags = 2;
633 ✗ layout_map[0][0] = layout_map[1][0] = TYPE_SCE;
634 ✗ layout_map[0][2] = layout_map[1][2] = AAC_CHANNEL_FRONT;
635 ✗ layout_map[0][1] = 0;
636 ✗ layout_map[1][1] = 1;
637 ✗ if (output_configure(ac, layout_map, layout_map_tags,
638 OC_TRIAL_FRAME, 1) < 0)
639 ✗ return NULL;
640
641 ✗ if (ac->oc[1].m4ac.sbr)
642 ✗ ac->oc[1].m4ac.ps = -1;
643 }
644 /* For indexed channel configurations map the channels solely based
645 * on position. */
646
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 39026 switch (ac->oc[1].m4ac.chan_config) {
647 ✗ case 14:
648 ✗ if (ac->tags_mapped > 2 && ((type == TYPE_CPE && elem_id < 3) ||
649 ✗ (type == TYPE_LFE && elem_id < 1))) {
650 ✗ ac->tags_mapped++;
651 ✗ return ac->tag_che_map[type][elem_id] = ac->che[type][elem_id];
652 }
653 case 13:
654 ✗ if (ac->tags_mapped > 3 && ((type == TYPE_CPE && elem_id < 8) ||
655 ✗ (type == TYPE_SCE && elem_id < 6) ||
656 ✗ (type == TYPE_LFE && elem_id < 2))) {
657 ✗ ac->tags_mapped++;
658 ✗ return ac->tag_che_map[type][elem_id] = ac->che[type][elem_id];
659 }
660 case 12:
661 case 7:
662 ✗ if (ac->tags_mapped == 3 && type == TYPE_CPE) {
663 ✗ ac->tags_mapped++;
664 ✗ return ac->tag_che_map[TYPE_CPE][elem_id] = ac->che[TYPE_CPE][2];
665 }
666 case 11:
667 ✗ if (ac->tags_mapped == 3 && type == TYPE_SCE) {
668 ✗ ac->tags_mapped++;
669 ✗ return ac->tag_che_map[TYPE_SCE][elem_id] = ac->che[TYPE_SCE][1];
670 }
671 case 6:
672 /* Some streams incorrectly code 5.1 audio as
673 * SCE[0] CPE[0] CPE[1] SCE[1]
674 * instead of
675 * SCE[0] CPE[0] CPE[1] LFE[0].
676 * If we seem to have encountered such a stream, transfer
677 * the LFE[0] element to the SCE[1]'s mapping */
678
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 3280 if (ac->tags_mapped == ff_tags_per_config[ac->oc[1].m4ac.chan_config] - 1 && (type == TYPE_LFE || type == TYPE_SCE)) {
679
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 820 if (!ac->warned_remapping_once && (type != TYPE_LFE || elem_id != 0)) {
680 ✗ av_log(ac->avctx, AV_LOG_WARNING,
681 "This stream seems to incorrectly report its last channel as %s[%d], mapping to LFE[0]\n",
682 type == TYPE_SCE ? "SCE" : "LFE", elem_id);
683 ✗ ac->warned_remapping_once++;
684 }
685 820 ac->tags_mapped++;
686 820 return ac->tag_che_map[type][elem_id] = ac->che[TYPE_LFE][0];
687 }
688 case 5:
689
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 2460 if (ac->tags_mapped == 2 && type == TYPE_CPE) {
690 820 ac->tags_mapped++;
691 820 return ac->tag_che_map[TYPE_CPE][elem_id] = ac->che[TYPE_CPE][1];
692 }
693 case 4:
694 /* Some streams incorrectly code 4.0 audio as
695 * SCE[0] CPE[0] LFE[0]
696 * instead of
697 * SCE[0] CPE[0] SCE[1].
698 * If we seem to have encountered such a stream, transfer
699 * the SCE[1] element to the LFE[0]'s mapping */
700
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 1640 if (ac->tags_mapped == ff_tags_per_config[ac->oc[1].m4ac.chan_config] - 1 && (type == TYPE_LFE || type == TYPE_SCE)) {
701 ✗ if (!ac->warned_remapping_once && (type != TYPE_SCE || elem_id != 1)) {
702 ✗ av_log(ac->avctx, AV_LOG_WARNING,
703 "This stream seems to incorrectly report its last channel as %s[%d], mapping to SCE[1]\n",
704 type == TYPE_SCE ? "SCE" : "LFE", elem_id);
705 ✗ ac->warned_remapping_once++;
706 }
707 ✗ ac->tags_mapped++;
708 ✗ return ac->tag_che_map[type][elem_id] = ac->che[TYPE_SCE][1];
709 }
710
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 1640 if (ac->tags_mapped == 2 &&
711 ✗ ac->oc[1].m4ac.chan_config == 4 &&
712 type == TYPE_SCE) {
713 ✗ ac->tags_mapped++;
714 ✗ return ac->tag_che_map[TYPE_SCE][elem_id] = ac->che[TYPE_SCE][1];
715 }
716 case 3:
717 case 2:
718
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 22280 if (ac->tags_mapped == (ac->oc[1].m4ac.chan_config != 2) &&
719 type == TYPE_CPE) {
720 21460 ac->tags_mapped++;
721 21460 return ac->tag_che_map[TYPE_CPE][elem_id] = ac->che[TYPE_CPE][0];
722
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 820 } else if (ac->tags_mapped == 1 && ac->oc[1].m4ac.chan_config == 2 &&
723 type == TYPE_SCE) {
724 ✗ ac->tags_mapped++;
725 ✗ return ac->tag_che_map[TYPE_SCE][elem_id] = ac->che[TYPE_SCE][1];
726 }
727 case 1:
728
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 15926 if (!ac->tags_mapped && type == TYPE_SCE) {
729 15926 ac->tags_mapped++;
730 15926 return ac->tag_che_map[TYPE_SCE][elem_id] = ac->che[TYPE_SCE][0];
731 }
732 default:
733 ✗ return NULL;
734 }
735 }
736
737 /**
738 * Decode an array of 4 bit element IDs, optionally interleaved with a
739 * stereo/mono switching bit.
740 *
741 * @param type speaker type/position for these channels
742 */
743 215 static void decode_channel_map(uint8_t layout_map[][3],
744 enum ChannelPosition type,
745 GetBitContext *gb, int n)
746 {
747
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 310 while (n--) {
748 enum RawDataBlockType syn_ele;
749
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 95 switch (type) {
750 75 case AAC_CHANNEL_FRONT:
751 case AAC_CHANNEL_BACK:
752 case AAC_CHANNEL_SIDE:
753 75 syn_ele = get_bits1(gb);
754 75 break;
755 8 case AAC_CHANNEL_CC:
756 8 skip_bits1(gb);
757 8 syn_ele = TYPE_CCE;
758 8 break;
759 12 case AAC_CHANNEL_LFE:
760 12 syn_ele = TYPE_LFE;
761 12 break;
762 ✗ default:
763 // AAC_CHANNEL_OFF has no channel map
764 ✗ av_assert0(0);
765 }
766 95 layout_map[0][0] = syn_ele;
767 95 layout_map[0][1] = get_bits(gb, 4);
768 95 layout_map[0][2] = type;
769 95 layout_map++;
770 }
771 215 }
772
773 43 static inline void relative_align_get_bits(GetBitContext *gb,
774 int reference_position) {
775 43 int n = (reference_position - get_bits_count(gb) & 7);
776
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 43 if (n)
777 39 skip_bits(gb, n);
778 43 }
779
780 /**
781 * Decode program configuration element; reference: table 4.2.
782 *
783 * @return Returns error status. 0 - OK, !0 - error
784 */
785 43 static int decode_pce(AVCodecContext *avctx, MPEG4AudioConfig *m4ac,
786 uint8_t (*layout_map)[3],
787 GetBitContext *gb, int byte_align_ref)
788 {
789 int num_front, num_side, num_back, num_lfe, num_assoc_data, num_cc;
790 int sampling_index;
791 int comment_len;
792 int tags;
793
794 43 skip_bits(gb, 2); // object_type
795
796 43 sampling_index = get_bits(gb, 4);
797
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 43 if (m4ac->sampling_index != sampling_index)
798 ✗ av_log(avctx, AV_LOG_WARNING,
799 "Sample rate index in program config element does not "
800 "match the sample rate index configured by the container.\n");
801
802 43 num_front = get_bits(gb, 4);
803 43 num_side = get_bits(gb, 4);
804 43 num_back = get_bits(gb, 4);
805 43 num_lfe = get_bits(gb, 2);
806 43 num_assoc_data = get_bits(gb, 3);
807 43 num_cc = get_bits(gb, 4);
808
809
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 43 if (get_bits1(gb))
810 ✗ skip_bits(gb, 4); // mono_mixdown_tag
811
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 43 if (get_bits1(gb))
812 ✗ skip_bits(gb, 4); // stereo_mixdown_tag
813
814
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 43 if (get_bits1(gb))
815 ✗ skip_bits(gb, 3); // mixdown_coeff_index and pseudo_surround
816
817
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 43 if (get_bits_left(gb) < 5 * (num_front + num_side + num_back + num_cc) + 4 *(num_lfe + num_assoc_data + num_cc)) {
818 ✗ av_log(avctx, AV_LOG_ERROR, "decode_pce: " overread_err);
819 ✗ return -1;
820 }
821 43 decode_channel_map(layout_map , AAC_CHANNEL_FRONT, gb, num_front);
822 43 tags = num_front;
823 43 decode_channel_map(layout_map + tags, AAC_CHANNEL_SIDE, gb, num_side);
824 43 tags += num_side;
825 43 decode_channel_map(layout_map + tags, AAC_CHANNEL_BACK, gb, num_back);
826 43 tags += num_back;
827 43 decode_channel_map(layout_map + tags, AAC_CHANNEL_LFE, gb, num_lfe);
828 43 tags += num_lfe;
829
830 43 skip_bits_long(gb, 4 * num_assoc_data);
831
832 43 decode_channel_map(layout_map + tags, AAC_CHANNEL_CC, gb, num_cc);
833 43 tags += num_cc;
834
835 43 relative_align_get_bits(gb, byte_align_ref);
836
837 /* comment field, first byte is length */
838 43 comment_len = get_bits(gb, 8) * 8;
839
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 43 if (get_bits_left(gb) < comment_len) {
840 ✗ av_log(avctx, AV_LOG_ERROR, "decode_pce: " overread_err);
841 ✗ return AVERROR_INVALIDDATA;
842 }
843 43 skip_bits_long(gb, comment_len);
844 43 return tags;
845 }
846
847 /**
848 * Decode GA "General Audio" specific configuration; reference: table 4.1.
849 *
850 * @param ac pointer to AACDecContext, may be null
851 * @param avctx pointer to AVCCodecContext, used for logging
852 *
853 * @return Returns error status. 0 - OK, !0 - error
854 */
855 549 static int decode_ga_specific_config(AACDecContext *ac, AVCodecContext *avctx,
856 GetBitContext *gb,
857 int get_bit_alignment,
858 MPEG4AudioConfig *m4ac,
859 int channel_config)
860 {
861 int extension_flag, ret, ep_config, res_flags;
862 uint8_t layout_map[MAX_ELEM_ID*4][3];
863 549 int tags = 0;
864
865 549 m4ac->frame_length_short = get_bits1(gb);
866
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 549 if (m4ac->frame_length_short && m4ac->sbr == 1) {
867 ✗ avpriv_report_missing_feature(avctx, "SBR with 960 frame length");
868 ✗ if (ac) ac->warned_960_sbr = 1;
869 ✗ m4ac->sbr = 0;
870 ✗ m4ac->ps = 0;
871 }
872
873
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 549 if (get_bits1(gb)) // dependsOnCoreCoder
874 ✗ skip_bits(gb, 14); // coreCoderDelay
875 549 extension_flag = get_bits1(gb);
876
877
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 549 if (m4ac->object_type == AOT_AAC_SCALABLE ||
878
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 549 m4ac->object_type == AOT_ER_AAC_SCALABLE)
879 ✗ skip_bits(gb, 3); // layerNr
880
881
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 549 if (channel_config == 0) {
882 43 skip_bits(gb, 4); // element_instance_tag
883 43 tags = decode_pce(avctx, m4ac, layout_map, gb, get_bit_alignment);
884
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 43 if (tags < 0)
885 ✗ return tags;
886 } else {
887
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 506 if ((ret = set_default_channel_config(ac, avctx, layout_map,
888 &tags, channel_config)))
889 ✗ return ret;
890 }
891
892
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 549 if (count_channels(layout_map, tags) > 1) {
893 457 m4ac->ps = 0;
894
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 92 } else if (m4ac->sbr == 1 && m4ac->ps == -1)
895 18 m4ac->ps = 1;
896
897
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 549 if (ac && (ret = output_configure(ac, layout_map, tags, OC_GLOBAL_HDR, 0)))
898 ✗ return ret;
899
900
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 549 if (extension_flag) {
901
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 4 switch (m4ac->object_type) {
902 ✗ case AOT_ER_BSAC:
903 ✗ skip_bits(gb, 5); // numOfSubFrame
904 ✗ skip_bits(gb, 11); // layer_length
905 ✗ break;
906 4 case AOT_ER_AAC_LC:
907 case AOT_ER_AAC_LTP:
908 case AOT_ER_AAC_SCALABLE:
909 case AOT_ER_AAC_LD:
910 4 res_flags = get_bits(gb, 3);
911
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 4 if (res_flags) {
912 ✗ avpriv_report_missing_feature(avctx,
913 "AAC data resilience (flags %x)",
914 res_flags);
915 ✗ return AVERROR_PATCHWELCOME;
916 }
917 4 break;
918 }
919 4 skip_bits1(gb); // extensionFlag3 (TBD in version 3)
920 }
921
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 549 switch (m4ac->object_type) {
922 4 case AOT_ER_AAC_LC:
923 case AOT_ER_AAC_LTP:
924 case AOT_ER_AAC_SCALABLE:
925 case AOT_ER_AAC_LD:
926 4 ep_config = get_bits(gb, 2);
927
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 4 if (ep_config) {
928 ✗ avpriv_report_missing_feature(avctx,
929 "epConfig %d", ep_config);
930 ✗ return AVERROR_PATCHWELCOME;
931 }
932 }
933 549 return 0;
934 }
935
936 10 static int decode_eld_specific_config(AACDecContext *ac, AVCodecContext *avctx,
937 GetBitContext *gb,
938 MPEG4AudioConfig *m4ac,
939 int channel_config)
940 {
941 int ret, ep_config, res_flags;
942 uint8_t layout_map[MAX_ELEM_ID*4][3];
943 10 int tags = 0;
944 10 const int ELDEXT_TERM = 0;
945
946 10 m4ac->ps = 0;
947 10 m4ac->sbr = 0;
948 10 m4ac->frame_length_short = get_bits1(gb);
949
950 10 res_flags = get_bits(gb, 3);
951
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 10 if (res_flags) {
952 ✗ avpriv_report_missing_feature(avctx,
953 "AAC data resilience (flags %x)",
954 res_flags);
955 ✗ return AVERROR_PATCHWELCOME;
956 }
957
958
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 10 if (get_bits1(gb)) { // ldSbrPresentFlag
959 ✗ avpriv_report_missing_feature(avctx,
960 "Low Delay SBR");
961 ✗ return AVERROR_PATCHWELCOME;
962 }
963
964
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 10 while (get_bits(gb, 4) != ELDEXT_TERM) {
965 ✗ int len = get_bits(gb, 4);
966 ✗ if (len == 15)
967 ✗ len += get_bits(gb, 8);
968 ✗ if (len == 15 + 255)
969 ✗ len += get_bits(gb, 16);
970 ✗ if (get_bits_left(gb) < len * 8 + 4) {
971 ✗ av_log(avctx, AV_LOG_ERROR, overread_err);
972 ✗ return AVERROR_INVALIDDATA;
973 }
974 ✗ skip_bits_long(gb, 8 * len);
975 }
976
977
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 10 if ((ret = set_default_channel_config(ac, avctx, layout_map,
978 &tags, channel_config)))
979 ✗ return ret;
980
981
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 10 if (ac && (ret = output_configure(ac, layout_map, tags, OC_GLOBAL_HDR, 0)))
982 ✗ return ret;
983
984 10 ep_config = get_bits(gb, 2);
985
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 10 if (ep_config) {
986 ✗ avpriv_report_missing_feature(avctx,
987 "epConfig %d", ep_config);
988 ✗ return AVERROR_PATCHWELCOME;
989 }
990 10 return 0;
991 }
992
993 /**
994 * Decode audio specific configuration; reference: table 1.13.
995 *
996 * @param ac pointer to AACDecContext, may be null
997 * @param avctx pointer to AVCCodecContext, used for logging
998 * @param m4ac pointer to MPEG4AudioConfig, used for parsing
999 * @param gb buffer holding an audio specific config
1000 * @param get_bit_alignment relative alignment for byte align operations
1001 * @param sync_extension look for an appended sync extension
1002 *
1003 * @return Returns error status or number of consumed bits. <0 - error
1004 */
1005 559 static int decode_audio_specific_config_gb(AACDecContext *ac,
1006 AVCodecContext *avctx,
1007 MPEG4AudioConfig *m4ac,
1008 GetBitContext *gb,
1009 int get_bit_alignment,
1010 int sync_extension)
1011 {
1012 int i, ret;
1013 559 GetBitContext gbc = *gb;
1014 559 MPEG4AudioConfig m4ac_bak = *m4ac;
1015
1016
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 559 if ((i = ff_mpeg4audio_get_config_gb(m4ac, &gbc, sync_extension, avctx)) < 0) {
1017 ✗ *m4ac = m4ac_bak;
1018 ✗ return AVERROR_INVALIDDATA;
1019 }
1020
1021
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 559 if (m4ac->sampling_index > 12) {
1022 ✗ av_log(avctx, AV_LOG_ERROR,
1023 "invalid sampling rate index %d\n",
1024 m4ac->sampling_index);
1025 ✗ *m4ac = m4ac_bak;
1026 ✗ return AVERROR_INVALIDDATA;
1027 }
1028
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 559 if (m4ac->object_type == AOT_ER_AAC_LD &&
1029
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 4 (m4ac->sampling_index < 3 || m4ac->sampling_index > 7)) {
1030 ✗ av_log(avctx, AV_LOG_ERROR,
1031 "invalid low delay sampling rate index %d\n",
1032 m4ac->sampling_index);
1033 ✗ *m4ac = m4ac_bak;
1034 ✗ return AVERROR_INVALIDDATA;
1035 }
1036
1037 559 skip_bits_long(gb, i);
1038
1039
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 559 switch (m4ac->object_type) {
1040 549 case AOT_AAC_MAIN:
1041 case AOT_AAC_LC:
1042 case AOT_AAC_SSR:
1043 case AOT_AAC_LTP:
1044 case AOT_ER_AAC_LC:
1045 case AOT_ER_AAC_LD:
1046
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 549 if ((ret = decode_ga_specific_config(ac, avctx, gb, get_bit_alignment,
1047 m4ac, m4ac->chan_config)) < 0)
1048 ✗ return ret;
1049 549 break;
1050 10 case AOT_ER_AAC_ELD:
1051
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 10 if ((ret = decode_eld_specific_config(ac, avctx, gb,
1052 m4ac, m4ac->chan_config)) < 0)
1053 ✗ return ret;
1054 10 break;
1055 ✗ default:
1056 ✗ avpriv_report_missing_feature(avctx,
1057 "Audio object type %s%d",
1058 ✗ m4ac->sbr == 1 ? "SBR+" : "",
1059 m4ac->object_type);
1060 ✗ return AVERROR(ENOSYS);
1061 }
1062
1063 ff_dlog(avctx,
1064 "AOT %d chan config %d sampling index %d (%d) SBR %d PS %d\n",
1065 m4ac->object_type, m4ac->chan_config, m4ac->sampling_index,
1066 m4ac->sample_rate, m4ac->sbr,
1067 m4ac->ps);
1068
1069 559 return get_bits_count(gb);
1070 }
1071
1072 237 static int decode_audio_specific_config(AACDecContext *ac,
1073 AVCodecContext *avctx,
1074 MPEG4AudioConfig *m4ac,
1075 const uint8_t *data, int64_t bit_size,
1076 int sync_extension)
1077 {
1078 int i, ret;
1079 GetBitContext gb;
1080
1081
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 237 if (bit_size < 0 || bit_size > INT_MAX) {
1082 ✗ av_log(avctx, AV_LOG_ERROR, "Audio specific config size is invalid\n");
1083 ✗ return AVERROR_INVALIDDATA;
1084 }
1085
1086 ff_dlog(avctx, "audio specific config size %d\n", (int)bit_size >> 3);
1087
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 1616 for (i = 0; i < bit_size >> 3; i++)
1088 ff_dlog(avctx, "%02x ", data[i]);
1089 ff_dlog(avctx, "\n");
1090
1091
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 237 if ((ret = init_get_bits(&gb, data, bit_size)) < 0)
1092 ✗ return ret;
1093
1094 237 return decode_audio_specific_config_gb(ac, avctx, m4ac, &gb, 0,
1095 sync_extension);
1096 }
1097
1098 62 static int sample_rate_idx (int rate)
1099 {
1100
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 62 if (92017 <= rate) return 0;
1101
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 62 else if (75132 <= rate) return 1;
1102
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 62 else if (55426 <= rate) return 2;
1103
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 62 else if (46009 <= rate) return 3;
1104
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 61 else if (37566 <= rate) return 4;
1105
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 45 else if (27713 <= rate) return 5;
1106
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 42 else if (23004 <= rate) return 6;
1107
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 42 else if (18783 <= rate) return 7;
1108
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 42 else if (13856 <= rate) return 8;
1109
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 38 else if (11502 <= rate) return 9;
1110
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 38 else if (9391 <= rate) return 10;
1111 38 else return 11;
1112 }
1113
1114 166 static av_cold void aac_static_table_init(void)
1115 {
1116 166 ff_aacdec_common_init_once();
1117 166 }
1118 static AVOnce aac_table_init = AV_ONCE_INIT;
1119
1120 291 static av_cold int decode_close(AVCodecContext *avctx)
1121 {
1122 291 AACDecContext *ac = avctx->priv_data;
1123 291 int is_fixed = ac->is_fixed;
1124
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 291 void (*sbr_close)(ChannelElement *che) = is_fixed ? ff_aac_sbr_ctx_close_fixed :
1125 ff_aac_sbr_ctx_close;
1126
1127
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 1455 for (int type = 0; type < FF_ARRAY_ELEMS(ac->che); type++) {
1128
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 19788 for (int i = 0; i < MAX_ELEM_ID; i++) {
1129
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 18624 if (ac->che[type][i]) {
1130 369 sbr_close(ac->che[type][i]);
1131 369 av_freep(&ac->che[type][i]);
1132 }
1133 }
1134 }
1135
1136 291 av_tx_uninit(&ac->mdct120);
1137 291 av_tx_uninit(&ac->mdct128);
1138 291 av_tx_uninit(&ac->mdct480);
1139 291 av_tx_uninit(&ac->mdct512);
1140 291 av_tx_uninit(&ac->mdct960);
1141 291 av_tx_uninit(&ac->mdct1024);
1142 291 av_tx_uninit(&ac->mdct_ltp);
1143
1144 // Compiler will optimize this branch away.
1145
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 291 if (is_fixed)
1146 23 av_freep(&ac->RENAME_FIXED(fdsp));
1147 else
1148 268 av_freep(&ac->fdsp);
1149
1150 291 return 0;
1151 }
1152
1153 291 static av_cold int init_dsp(AVCodecContext *avctx)
1154 {
1155 291 AACDecContext *ac = avctx->priv_data;
1156 291 int is_fixed = ac->is_fixed, ret;
1157 float scale_fixed, scale_float;
1158
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 291 const float *const scalep = is_fixed ? &scale_fixed : &scale_float;
1159
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 291 enum AVTXType tx_type = is_fixed ? AV_TX_INT32_MDCT : AV_TX_FLOAT_MDCT;
1160
1161
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 291 if (avctx->ch_layout.nb_channels > MAX_CHANNELS) {
1162 ✗ av_log(avctx, AV_LOG_ERROR, "Too many channels\n");
1163 ✗ return AVERROR_INVALIDDATA;
1164 }
1165
1166 291 ac->random_state = 0x1f2e3d4c;
1167
1168 #define MDCT_INIT(s, fn, len, sval) \
1169 scale_fixed = (sval) * 128.0f; \
1170 scale_float = (sval) / 32768.0f; \
1171 ret = av_tx_init(&s, &fn, tx_type, 1, len, scalep, 0); \
1172 if (ret < 0) \
1173 return ret
1174
1175
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 291 MDCT_INIT(ac->mdct120, ac->mdct120_fn, 120, 1.0/120);
1176
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 291 MDCT_INIT(ac->mdct128, ac->mdct128_fn, 128, 1.0/128);
1177
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 291 MDCT_INIT(ac->mdct480, ac->mdct480_fn, 480, 1.0/480);
1178
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 291 MDCT_INIT(ac->mdct512, ac->mdct512_fn, 512, 1.0/512);
1179
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 291 MDCT_INIT(ac->mdct960, ac->mdct960_fn, 960, 1.0/960);
1180
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 291 MDCT_INIT(ac->mdct1024, ac->mdct1024_fn, 1024, 1.0/1024);
1181 #undef MDCT_INIT
1182
1183 /* LTP forward MDCT */
1184 291 scale_fixed = -1.0;
1185 291 scale_float = -32786.0*2 + 36;
1186 291 ret = av_tx_init(&ac->mdct_ltp, &ac->mdct_ltp_fn, tx_type, 0, 1024, scalep, 0);
1187
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 291 if (ret < 0)
1188 ✗ return ret;
1189
1190
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 291 ac->dsp = is_fixed ? aac_dsp_fixed : aac_dsp;
1191
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 291 ac->proc = is_fixed ? aac_proc_fixed : aac_proc;
1192
1193 291 return ac->dsp.init(ac);
1194 }
1195
1196 291 static av_cold int aac_decode_init_internal(AVCodecContext *avctx)
1197 {
1198 291 AACDecContext *ac = avctx->priv_data;
1199 int ret;
1200
1201
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 291 if (avctx->sample_rate > 96000)
1202 ✗ return AVERROR_INVALIDDATA;
1203
1204 291 ret = ff_thread_once(&aac_table_init, &aac_static_table_init);
1205
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 291 if (ret != 0)
1206 ✗ return AVERROR_UNKNOWN;
1207
1208 291 ac->avctx = avctx;
1209 291 ac->oc[1].m4ac.sample_rate = avctx->sample_rate;
1210
1211
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 291 if (ac->is_fixed)
1212 23 avctx->sample_fmt = AV_SAMPLE_FMT_S32P;
1213 else
1214 268 avctx->sample_fmt = AV_SAMPLE_FMT_FLTP;
1215
1216
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 291 if (avctx->extradata_size > 0) {
1217
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 229 if ((ret = decode_audio_specific_config(ac, ac->avctx, &ac->oc[1].m4ac,
1218 229 avctx->extradata,
1219 229 avctx->extradata_size * 8LL,
1220 1)) < 0)
1221 ✗ return ret;
1222 } else {
1223 int sr, i;
1224 uint8_t layout_map[MAX_ELEM_ID*4][3];
1225 int layout_map_tags;
1226
1227 62 sr = sample_rate_idx(avctx->sample_rate);
1228 62 ac->oc[1].m4ac.sampling_index = sr;
1229 62 ac->oc[1].m4ac.channels = avctx->ch_layout.nb_channels;
1230 62 ac->oc[1].m4ac.sbr = -1;
1231 62 ac->oc[1].m4ac.ps = -1;
1232
1233
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 110 for (i = 0; i < FF_ARRAY_ELEMS(ff_mpeg4audio_channels); i++)
1234
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 110 if (ff_mpeg4audio_channels[i] == avctx->ch_layout.nb_channels)
1235 62 break;
1236
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 62 if (i == FF_ARRAY_ELEMS(ff_mpeg4audio_channels)) {
1237 ✗ i = 0;
1238 }
1239 62 ac->oc[1].m4ac.chan_config = i;
1240
1241
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 62 if (ac->oc[1].m4ac.chan_config) {
1242 24 int ret = set_default_channel_config(ac, avctx, layout_map,
1243 &layout_map_tags, ac->oc[1].m4ac.chan_config);
1244
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 24 if (!ret)
1245 24 output_configure(ac, layout_map, layout_map_tags,
1246 OC_GLOBAL_HDR, 0);
1247 ✗ else if (avctx->err_recognition & AV_EF_EXPLODE)
1248 ✗ return AVERROR_INVALIDDATA;
1249 }
1250 }
1251
1252 291 return init_dsp(avctx);
1253 }
1254
1255 268 static av_cold int aac_decode_init(AVCodecContext *avctx)
1256 {
1257 268 AACDecContext *ac = avctx->priv_data;
1258 268 ac->is_fixed = 0;
1259 268 return aac_decode_init_internal(avctx);
1260 }
1261
1262 23 static av_cold int aac_decode_init_fixed(AVCodecContext *avctx)
1263 {
1264 23 AACDecContext *ac = avctx->priv_data;
1265 23 ac->is_fixed = 1;
1266 23 return aac_decode_init_internal(avctx);
1267 }
1268
1269 /**
1270 * Skip data_stream_element; reference: table 4.10.
1271 */
1272 2821 static int skip_data_stream_element(AACDecContext *ac, GetBitContext *gb)
1273 {
1274 2821 int byte_align = get_bits1(gb);
1275 2821 int count = get_bits(gb, 8);
1276
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 2821 if (count == 255)
1277 ✗ count += get_bits(gb, 8);
1278
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 2821 if (byte_align)
1279 2454 align_get_bits(gb);
1280
1281
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 2821 if (get_bits_left(gb) < 8 * count) {
1282 ✗ av_log(ac->avctx, AV_LOG_ERROR, "skip_data_stream_element: "overread_err);
1283 ✗ return AVERROR_INVALIDDATA;
1284 }
1285 2821 skip_bits_long(gb, 8 * count);
1286 2821 return 0;
1287 }
1288
1289 1426 static int decode_prediction(AACDecContext *ac, IndividualChannelStream *ics,
1290 GetBitContext *gb)
1291 {
1292 int sfb;
1293
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 1426 if (get_bits1(gb)) {
1294 359 ics->predictor_reset_group = get_bits(gb, 5);
1295
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 359 if (ics->predictor_reset_group == 0 ||
1296
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 359 ics->predictor_reset_group > 30) {
1297 ✗ av_log(ac->avctx, AV_LOG_ERROR,
1298 "Invalid Predictor Reset Group.\n");
1299 ✗ return AVERROR_INVALIDDATA;
1300 }
1301 }
1302
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 47801 for (sfb = 0; sfb < FFMIN(ics->max_sfb, ff_aac_pred_sfb_max[ac->oc[1].m4ac.sampling_index]); sfb++) {
1303 46375 ics->prediction_used[sfb] = get_bits1(gb);
1304 }
1305 1426 return 0;
1306 }
1307
1308 /**
1309 * Decode Long Term Prediction data; reference: table 4.xx.
1310 */
1311 786 static void decode_ltp(AACDecContext *ac, LongTermPrediction *ltp,
1312 GetBitContext *gb, uint8_t max_sfb)
1313 {
1314 int sfb;
1315
1316 786 ltp->lag = get_bits(gb, 11);
1317
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 786 if (CONFIG_AAC_FIXED_DECODER && ac->is_fixed)
1318 393 ltp->coef_fixed = Q30(ff_ltp_coef[get_bits(gb, 3)]);
1319 else if (CONFIG_AAC_DECODER)
1320 393 ltp->coef = ff_ltp_coef[get_bits(gb, 3)];
1321
1322
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 32226 for (sfb = 0; sfb < FFMIN(max_sfb, MAX_LTP_LONG_SFB); sfb++)
1323 31440 ltp->used[sfb] = get_bits1(gb);
1324 786 }
1325
1326 /**
1327 * Decode Individual Channel Stream info; reference: table 4.6.
1328 */
1329 63372 static int decode_ics_info(AACDecContext *ac, IndividualChannelStream *ics,
1330 GetBitContext *gb)
1331 {
1332 63372 const MPEG4AudioConfig *const m4ac = &ac->oc[1].m4ac;
1333 63372 const int aot = m4ac->object_type;
1334 63372 const int sampling_index = m4ac->sampling_index;
1335 63372 int ret_fail = AVERROR_INVALIDDATA;
1336
1337
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 63372 if (aot != AOT_ER_AAC_ELD) {
1338
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 47007 if (get_bits1(gb)) {
1339 ✗ av_log(ac->avctx, AV_LOG_ERROR, "Reserved bit set.\n");
1340 ✗ if (ac->avctx->err_recognition & AV_EF_BITSTREAM)
1341 ✗ return AVERROR_INVALIDDATA;
1342 }
1343 47007 ics->window_sequence[1] = ics->window_sequence[0];
1344 47007 ics->window_sequence[0] = get_bits(gb, 2);
1345
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 47007 if (aot == AOT_ER_AAC_LD &&
1346
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 2424 ics->window_sequence[0] != ONLY_LONG_SEQUENCE) {
1347 ✗ av_log(ac->avctx, AV_LOG_ERROR,
1348 "AAC LD is only defined for ONLY_LONG_SEQUENCE but "
1349 ✗ "window sequence %d found.\n", ics->window_sequence[0]);
1350 ✗ ics->window_sequence[0] = ONLY_LONG_SEQUENCE;
1351 ✗ return AVERROR_INVALIDDATA;
1352 }
1353 47007 ics->use_kb_window[1] = ics->use_kb_window[0];
1354 47007 ics->use_kb_window[0] = get_bits1(gb);
1355 }
1356 63372 ics->num_window_groups = 1;
1357 63372 ics->group_len[0] = 1;
1358
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 63372 if (ics->window_sequence[0] == EIGHT_SHORT_SEQUENCE) {
1359 int i;
1360 1331 ics->max_sfb = get_bits(gb, 4);
1361
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 10648 for (i = 0; i < 7; i++) {
1362
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 9317 if (get_bits1(gb)) {
1363 5889 ics->group_len[ics->num_window_groups - 1]++;
1364 } else {
1365 3428 ics->num_window_groups++;
1366 3428 ics->group_len[ics->num_window_groups - 1] = 1;
1367 }
1368 }
1369 1331 ics->num_windows = 8;
1370
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 1331 if (m4ac->frame_length_short) {
1371 1 ics->swb_offset = ff_swb_offset_120[sampling_index];
1372 1 ics->num_swb = ff_aac_num_swb_120[sampling_index];
1373 } else {
1374 1330 ics->swb_offset = ff_swb_offset_128[sampling_index];
1375 1330 ics->num_swb = ff_aac_num_swb_128[sampling_index];
1376 }
1377 1331 ics->tns_max_bands = ff_tns_max_bands_128[sampling_index];
1378 1331 ics->predictor_present = 0;
1379 } else {
1380 62041 ics->max_sfb = get_bits(gb, 6);
1381 62041 ics->num_windows = 1;
1382
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 62041 if (aot == AOT_ER_AAC_LD || aot == AOT_ER_AAC_ELD) {
1383
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 18789 if (m4ac->frame_length_short) {
1384 3559 ics->swb_offset = ff_swb_offset_480[sampling_index];
1385 3559 ics->num_swb = ff_aac_num_swb_480[sampling_index];
1386 3559 ics->tns_max_bands = ff_tns_max_bands_480[sampling_index];
1387 } else {
1388 15230 ics->swb_offset = ff_swb_offset_512[sampling_index];
1389 15230 ics->num_swb = ff_aac_num_swb_512[sampling_index];
1390 15230 ics->tns_max_bands = ff_tns_max_bands_512[sampling_index];
1391 }
1392
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 18789 if (!ics->num_swb || !ics->swb_offset) {
1393 ✗ ret_fail = AVERROR_BUG;
1394 ✗ goto fail;
1395 }
1396 } else {
1397
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 43252 if (m4ac->frame_length_short) {
1398 386 ics->num_swb = ff_aac_num_swb_960[sampling_index];
1399 386 ics->swb_offset = ff_swb_offset_960[sampling_index];
1400 } else {
1401 42866 ics->num_swb = ff_aac_num_swb_1024[sampling_index];
1402 42866 ics->swb_offset = ff_swb_offset_1024[sampling_index];
1403 }
1404 43252 ics->tns_max_bands = ff_tns_max_bands_1024[sampling_index];
1405 }
1406
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 62041 if (aot != AOT_ER_AAC_ELD) {
1407 45676 ics->predictor_present = get_bits1(gb);
1408 45676 ics->predictor_reset_group = 0;
1409 }
1410
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 62041 if (ics->predictor_present) {
1411
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 1964 if (aot == AOT_AAC_MAIN) {
1412
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 1426 if (decode_prediction(ac, ics, gb)) {
1413 ✗ goto fail;
1414 }
1415
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 538 } else if (aot == AOT_AAC_LC ||
1416 aot == AOT_ER_AAC_LC) {
1417 ✗ av_log(ac->avctx, AV_LOG_ERROR,
1418 "Prediction is not allowed in AAC-LC.\n");
1419 ✗ goto fail;
1420 } else {
1421
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 538 if (aot == AOT_ER_AAC_LD) {
1422 ✗ av_log(ac->avctx, AV_LOG_ERROR,
1423 "LTP in ER AAC LD not yet implemented.\n");
1424 ✗ ret_fail = AVERROR_PATCHWELCOME;
1425 ✗ goto fail;
1426 }
1427
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 538 if ((ics->ltp.present = get_bits(gb, 1)))
1428 382 decode_ltp(ac, &ics->ltp, gb, ics->max_sfb);
1429 }
1430 }
1431 }
1432
1433
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 63372 if (ics->max_sfb > ics->num_swb) {
1434 ✗ av_log(ac->avctx, AV_LOG_ERROR,
1435 "Number of scalefactor bands in group (%d) "
1436 "exceeds limit (%d).\n",
1437 ✗ ics->max_sfb, ics->num_swb);
1438 ✗ goto fail;
1439 }
1440
1441 63372 return 0;
1442 ✗ fail:
1443 ✗ ics->max_sfb = 0;
1444 ✗ return ret_fail;
1445 }
1446
1447 /**
1448 * Decode band types (section_data payload); reference: table 4.46.
1449 *
1450 * @param band_type array of the used band type
1451 * @param band_type_run_end array of the last scalefactor band of a band type run
1452 *
1453 * @return Returns error status. 0 - OK, !0 - error
1454 */
1455 93936 static int decode_band_types(AACDecContext *ac, enum BandType band_type[120],
1456 int band_type_run_end[120], GetBitContext *gb,
1457 IndividualChannelStream *ics)
1458 {
1459 93936 int g, idx = 0;
1460
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 93936 const int bits = (ics->window_sequence[0] == EIGHT_SHORT_SEQUENCE) ? 3 : 5;
1461
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 193110 for (g = 0; g < ics->num_window_groups; g++) {
1462 99174 int k = 0;
1463
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 563829 while (k < ics->max_sfb) {
1464 464655 uint8_t sect_end = k;
1465 int sect_len_incr;
1466 464655 int sect_band_type = get_bits(gb, 4);
1467
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 464655 if (sect_band_type == 12) {
1468 ✗ av_log(ac->avctx, AV_LOG_ERROR, "invalid band type\n");
1469 ✗ return AVERROR_INVALIDDATA;
1470 }
1471 do {
1472 483418 sect_len_incr = get_bits(gb, bits);
1473 483418 sect_end += sect_len_incr;
1474
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 483418 if (get_bits_left(gb) < 0) {
1475 ✗ av_log(ac->avctx, AV_LOG_ERROR, "decode_band_types: "overread_err);
1476 ✗ return AVERROR_INVALIDDATA;
1477 }
1478
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 483418 if (sect_end > ics->max_sfb) {
1479 ✗ av_log(ac->avctx, AV_LOG_ERROR,
1480 "Number of bands (%d) exceeds limit (%d).\n",
1481 ✗ sect_end, ics->max_sfb);
1482 ✗ return AVERROR_INVALIDDATA;
1483 }
1484
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 483418 } while (sect_len_incr == (1 << bits) - 1);
1485
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 3943311 for (; k < sect_end; k++) {
1486 3478656 band_type [idx] = sect_band_type;
1487 3478656 band_type_run_end[idx++] = sect_end;
1488 }
1489 }
1490 }
1491 93936 return 0;
1492 }
1493
1494 /**
1495 * Decode scalefactors; reference: table 4.47.
1496 *
1497 * @param global_gain first scalefactor value as scalefactors are differentially coded
1498 * @param band_type array of the used band type
1499 * @param band_type_run_end array of the last scalefactor band of a band type run
1500 * @param sf array of scalefactors or intensity stereo positions
1501 *
1502 * @return Returns error status. 0 - OK, !0 - error
1503 */
1504 93936 static int decode_scalefactors(AACDecContext *ac, int sfo[120],
1505 GetBitContext *gb,
1506 unsigned int global_gain,
1507 IndividualChannelStream *ics,
1508 enum BandType band_type[120],
1509 int band_type_run_end[120])
1510 {
1511 93936 int g, i, idx = 0;
1512 93936 int offset[3] = { global_gain, global_gain - NOISE_OFFSET, 0 };
1513 int clipped_offset;
1514 93936 int noise_flag = 1;
1515
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 193110 for (g = 0; g < ics->num_window_groups; g++) {
1516
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 563829 for (i = 0; i < ics->max_sfb;) {
1517 464655 int run_end = band_type_run_end[idx];
1518
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 464655 switch (band_type[idx]) {
1519 63440 case ZERO_BT:
1520
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 600445 for (; i < run_end; i++, idx++)
1521 537005 sfo[idx] = 0;
1522 63440 break;
1523 9583 case INTENSITY_BT: /* fallthrough */
1524 case INTENSITY_BT2:
1525
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 75790 for (; i < run_end; i++, idx++) {
1526 66207 offset[2] += get_vlc2(gb, ff_vlc_scalefactors, 7, 3) - SCALE_DIFF_ZERO;
1527 66207 clipped_offset = av_clip(offset[2], -155, 100);
1528
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 66207 if (offset[2] != clipped_offset) {
1529 ✗ avpriv_request_sample(ac->avctx,
1530 "If you heard an audible artifact, there may be a bug in the decoder. "
1531 "Clipped intensity stereo position (%d -> %d)",
1532 offset[2], clipped_offset);
1533 }
1534 66207 sfo[idx] = clipped_offset;
1535 }
1536 9583 break;
1537 7825 case NOISE_BT:
1538
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 289440 for (; i < run_end; i++, idx++) {
1539
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 281615 if (noise_flag-- > 0)
1540 6715 offset[1] += get_bits(gb, NOISE_PRE_BITS) - NOISE_PRE;
1541 else
1542 274900 offset[1] += get_vlc2(gb, ff_vlc_scalefactors, 7, 3) - SCALE_DIFF_ZERO;
1543 281615 clipped_offset = av_clip(offset[1], -100, 155);
1544
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 281615 if (offset[1] != clipped_offset) {
1545 ✗ avpriv_request_sample(ac->avctx,
1546 "If you heard an audible artifact, there may be a bug in the decoder. "
1547 "Clipped noise gain (%d -> %d)",
1548 offset[1], clipped_offset);
1549 }
1550 281615 sfo[idx] = clipped_offset;
1551 }
1552 7825 break;
1553 383807 default:
1554
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 2977636 for (; i < run_end; i++, idx++) {
1555 2593829 offset[0] += get_vlc2(gb, ff_vlc_scalefactors, 7, 3) - SCALE_DIFF_ZERO;
1556
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 2593829 if (offset[0] > 255U) {
1557 ✗ av_log(ac->avctx, AV_LOG_ERROR,
1558 "Scalefactor (%d) out of range.\n", offset[0]);
1559 ✗ return AVERROR_INVALIDDATA;
1560 }
1561 2593829 sfo[idx] = offset[0];
1562 }
1563 383807 break;
1564 }
1565 }
1566 }
1567 93936 return 0;
1568 }
1569
1570 /**
1571 * Decode pulse data; reference: table 4.7.
1572 */
1573 1098 static int decode_pulses(Pulse *pulse, GetBitContext *gb,
1574 const uint16_t *swb_offset, int num_swb)
1575 {
1576 int i, pulse_swb;
1577 1098 pulse->num_pulse = get_bits(gb, 2) + 1;
1578 1098 pulse_swb = get_bits(gb, 6);
1579
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 1098 if (pulse_swb >= num_swb)
1580 ✗ return -1;
1581 1098 pulse->pos[0] = swb_offset[pulse_swb];
1582 1098 pulse->pos[0] += get_bits(gb, 5);
1583
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 1098 if (pulse->pos[0] >= swb_offset[num_swb])
1584 ✗ return -1;
1585 1098 pulse->amp[0] = get_bits(gb, 4);
1586
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 2744 for (i = 1; i < pulse->num_pulse; i++) {
1587 1646 pulse->pos[i] = get_bits(gb, 5) + pulse->pos[i - 1];
1588
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 1646 if (pulse->pos[i] >= swb_offset[num_swb])
1589 ✗ return -1;
1590 1646 pulse->amp[i] = get_bits(gb, 4);
1591 }
1592 1098 return 0;
1593 }
1594
1595 /**
1596 * Decode Temporal Noise Shaping data; reference: table 4.48.
1597 *
1598 * @return Returns error status. 0 - OK, !0 - error
1599 */
1600 6955 static int decode_tns(AACDecContext *ac, TemporalNoiseShaping *tns,
1601 GetBitContext *gb, const IndividualChannelStream *ics)
1602 {
1603 int w, filt, i, coef_len, coef_res, coef_compress;
1604 6955 const int is8 = ics->window_sequence[0] == EIGHT_SHORT_SEQUENCE;
1605
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 6955 const int tns_max_order = is8 ? 7 : ac->oc[1].m4ac.object_type == AOT_AAC_MAIN ? 20 : 12;
1606
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 18523 for (w = 0; w < ics->num_windows; w++) {
1607
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 11568 if ((tns->n_filt[w] = get_bits(gb, 2 - is8))) {
1608 7946 coef_res = get_bits1(gb);
1609
1610
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 17353 for (filt = 0; filt < tns->n_filt[w]; filt++) {
1611 int tmp2_idx;
1612 9407 tns->length[w][filt] = get_bits(gb, 6 - 2 * is8);
1613
1614
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 9407 if ((tns->order[w][filt] = get_bits(gb, 5 - 2 * is8)) > tns_max_order) {
1615 ✗ av_log(ac->avctx, AV_LOG_ERROR,
1616 "TNS filter order %d is greater than maximum %d.\n",
1617 tns->order[w][filt], tns_max_order);
1618 ✗ tns->order[w][filt] = 0;
1619 ✗ return AVERROR_INVALIDDATA;
1620 }
1621
2/2
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 9407 if (tns->order[w][filt]) {
1622 8887 tns->direction[w][filt] = get_bits1(gb);
1623 8887 coef_compress = get_bits1(gb);
1624 8887 coef_len = coef_res + 3 - coef_compress;
1625 8887 tmp2_idx = 2 * coef_compress + coef_res;
1626
1627
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 67435 for (i = 0; i < tns->order[w][filt]; i++) {
1628
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 58548 if (CONFIG_AAC_FIXED_DECODER && ac->is_fixed)
1629 14113 tns->coef_fixed[w][filt][i] = Q31(ff_tns_tmp2_map[tmp2_idx][get_bits(gb, coef_len)]);
1630 else if (CONFIG_AAC_DECODER)
1631 44435 tns->coef[w][filt][i] = ff_tns_tmp2_map[tmp2_idx][get_bits(gb, coef_len)];
1632 }
1633 }
1634 }
1635 }
1636 }
1637 6955 return 0;
1638 }
1639
1640 /**
1641 * Decode Mid/Side data; reference: table 4.54.
1642 *
1643 * @param ms_present Indicates mid/side stereo presence. [0] mask is all 0s;
1644 * [1] mask is decoded from bitstream; [2] mask is all 1s;
1645 * [3] reserved for scalable AAC
1646 */
1647 27052 static void decode_mid_side_stereo(ChannelElement *cpe, GetBitContext *gb,
1648 int ms_present)
1649 {
1650 int idx;
1651 27052 int max_idx = cpe->ch[0].ics.num_window_groups * cpe->ch[0].ics.max_sfb;
1652
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 27052 if (ms_present == 1) {
1653
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 510551 for (idx = 0; idx < max_idx; idx++)
1654 497864 cpe->ms_mask[idx] = get_bits1(gb);
1655
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 14365 } else if (ms_present == 2) {
1656 14365 memset(cpe->ms_mask, 1, max_idx * sizeof(cpe->ms_mask[0]));
1657 }
1658 27052 }
1659
1660 ✗ static void decode_gain_control(SingleChannelElement * sce, GetBitContext * gb)
1661 {
1662 // wd_num, wd_test, aloc_size
1663 static const uint8_t gain_mode[4][3] = {
1664 {1, 0, 5}, // ONLY_LONG_SEQUENCE = 0,
1665 {2, 1, 2}, // LONG_START_SEQUENCE,
1666 {8, 0, 2}, // EIGHT_SHORT_SEQUENCE,
1667 {2, 1, 5}, // LONG_STOP_SEQUENCE
1668 };
1669
1670 ✗ const int mode = sce->ics.window_sequence[0];
1671 uint8_t bd, wd, ad;
1672
1673 // FIXME: Store the gain control data on |sce| and do something with it.
1674 ✗ uint8_t max_band = get_bits(gb, 2);
1675 ✗ for (bd = 0; bd < max_band; bd++) {
1676 ✗ for (wd = 0; wd < gain_mode[mode][0]; wd++) {
1677 ✗ uint8_t adjust_num = get_bits(gb, 3);
1678 ✗ for (ad = 0; ad < adjust_num; ad++) {
1679 ✗ skip_bits(gb, 4 + ((wd == 0 && gain_mode[mode][1])
1680 ? 4
1681 ✗ : gain_mode[mode][2]));
1682 }
1683 }
1684 }
1685 ✗ }
1686
1687 /**
1688 * Decode an individual_channel_stream payload; reference: table 4.44.
1689 *
1690 * @param common_window Channels have independent [0], or shared [1], Individual Channel Stream information.
1691 * @param scale_flag scalable [1] or non-scalable [0] AAC (Unused until scalable AAC is implemented.)
1692 *
1693 * @return Returns error status. 0 - OK, !0 - error
1694 */
1695 93936 int ff_aac_decode_ics(AACDecContext *ac, SingleChannelElement *sce,
1696 GetBitContext *gb, int common_window, int scale_flag)
1697 {
1698 Pulse pulse;
1699 93936 TemporalNoiseShaping *tns = &sce->tns;
1700 93936 IndividualChannelStream *ics = &sce->ics;
1701 93936 int global_gain, eld_syntax, er_syntax, pulse_present = 0;
1702 int ret;
1703
1704 93936 eld_syntax = ac->oc[1].m4ac.object_type == AOT_ER_AAC_ELD;
1705 281808 er_syntax = ac->oc[1].m4ac.object_type == AOT_ER_AAC_LC ||
1706
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 93936 ac->oc[1].m4ac.object_type == AOT_ER_AAC_LTP ||
1707
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 278172 ac->oc[1].m4ac.object_type == AOT_ER_AAC_LD ||
1708
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 90300 ac->oc[1].m4ac.object_type == AOT_ER_AAC_ELD;
1709
1710 /* This assignment is to silence a GCC warning about the variable being used
1711 * uninitialized when in fact it always is.
1712 */
1713 93936 pulse.num_pulse = 0;
1714
1715 93936 global_gain = get_bits(gb, 8);
1716
1717
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✓ Branch 2 taken 32808 times.
✗ Branch 3 not taken.
 93936 if (!common_window && !scale_flag) {
1718 32808 ret = decode_ics_info(ac, ics, gb);
1719
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 32808 times.
 32808 if (ret < 0)
1720 ✗ goto fail;
1721 }
1722
1723
1/2
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✓ Branch 1 taken 93936 times.
 93936 if ((ret = decode_band_types(ac, sce->band_type,
1724 93936 sce->band_type_run_end, gb, ics)) < 0)
1725 ✗ goto fail;
1726
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 93936 times.
 93936 if ((ret = decode_scalefactors(ac, sce->sfo, gb, global_gain, ics,
1727 93936 sce->band_type, sce->band_type_run_end)) < 0)
1728 ✗ goto fail;
1729
1730 93936 ac->dsp.dequant_scalefactors(sce);
1731
1732 93936 pulse_present = 0;
1733
1/2
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✗ Branch 1 not taken.
 93936 if (!scale_flag) {
1734
4/4
✓ Branch 0 taken 67338 times.
✓ Branch 1 taken 26598 times.
✓ Branch 3 taken 1098 times.
✓ Branch 4 taken 66240 times.
 93936 if (!eld_syntax && (pulse_present = get_bits1(gb))) {
1735
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 1098 times.
 1098 if (ics->window_sequence[0] == EIGHT_SHORT_SEQUENCE) {
1736 ✗ av_log(ac->avctx, AV_LOG_ERROR,
1737 "Pulse tool not allowed in eight short sequence.\n");
1738 ✗ ret = AVERROR_INVALIDDATA;
1739 ✗ goto fail;
1740 }
1741
1/2
✗ Branch 1 not taken.
✓ Branch 2 taken 1098 times.
 1098 if (decode_pulses(&pulse, gb, ics->swb_offset, ics->num_swb)) {
1742 ✗ av_log(ac->avctx, AV_LOG_ERROR,
1743 "Pulse data corrupt or invalid.\n");
1744 ✗ ret = AVERROR_INVALIDDATA;
1745 ✗ goto fail;
1746 }
1747 }
1748 93936 tns->present = get_bits1(gb);
1749
4/4
✓ Branch 0 taken 6955 times.
✓ Branch 1 taken 86981 times.
✓ Branch 2 taken 5691 times.
✓ Branch 3 taken 1264 times.
 93936 if (tns->present && !er_syntax) {
1750 5691 ret = decode_tns(ac, tns, gb, ics);
1751
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 5691 times.
 5691 if (ret < 0)
1752 ✗ goto fail;
1753 }
1754
3/4
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✗ Branch 3 not taken.
✓ Branch 4 taken 67338 times.
 93936 if (!eld_syntax && get_bits1(gb)) {
1755 ✗ decode_gain_control(sce, gb);
1756 ✗ if (!ac->warned_gain_control) {
1757 ✗ avpriv_report_missing_feature(ac->avctx, "Gain control");
1758 ✗ ac->warned_gain_control = 1;
1759 }
1760 }
1761 // I see no textual basis in the spec for this occurring after SSR gain
1762 // control, but this is what both reference and real implmentations do
1763
4/4
✓ Branch 0 taken 6955 times.
✓ Branch 1 taken 86981 times.
✓ Branch 2 taken 1264 times.
✓ Branch 3 taken 5691 times.
 93936 if (tns->present && er_syntax) {
1764 1264 ret = decode_tns(ac, tns, gb, ics);
1765
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 1264 times.
 1264 if (ret < 0)
1766 ✗ goto fail;
1767 }
1768 }
1769
1770
2/2
✓ Branch 0 taken 1098 times.
✓ Branch 1 taken 92838 times.
 93936 ret = ac->proc.decode_spectrum_and_dequant(ac, gb,
1771 pulse_present ? &pulse : NULL,
1772 sce);
1773
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 93936 times.
 93936 if (ret < 0)
1774 ✗ goto fail;
1775
1776
4/4
✓ Branch 0 taken 7388 times.
✓ Branch 1 taken 86548 times.
✓ Branch 2 taken 6094 times.
✓ Branch 3 taken 1294 times.
 93936 if (ac->oc[1].m4ac.object_type == AOT_AAC_MAIN && !common_window)
1777 6094 ac->dsp.apply_prediction(ac, sce);
1778
1779 93936 return 0;
1780 ✗ fail:
1781 ✗ tns->present = 0;
1782 ✗ return ret;
1783 }
1784
1785 /**
1786 * Decode a channel_pair_element; reference: table 4.4.
1787 *
1788 * @return Returns error status. 0 - OK, !0 - error
1789 */
1790 30786 static int decode_cpe(AACDecContext *ac, GetBitContext *gb, ChannelElement *cpe)
1791 {
1792 30786 int i, ret, common_window, ms_present = 0;
1793 30786 int eld_syntax = ac->oc[1].m4ac.object_type == AOT_ER_AAC_ELD;
1794
1795
4/4
✓ Branch 0 taken 20553 times.
✓ Branch 1 taken 10233 times.
✓ Branch 3 taken 20331 times.
✓ Branch 4 taken 222 times.
 30786 common_window = eld_syntax || get_bits1(gb);
1796
2/2
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✓ Branch 1 taken 222 times.
 30786 if (common_window) {
1797
1/2
✗ Branch 1 not taken.
✓ Branch 2 taken 30564 times.
 30564 if (decode_ics_info(ac, &cpe->ch[0].ics, gb))
1798 ✗ return AVERROR_INVALIDDATA;
1799 30564 i = cpe->ch[1].ics.use_kb_window[0];
1800 30564 cpe->ch[1].ics = cpe->ch[0].ics;
1801 30564 cpe->ch[1].ics.use_kb_window[1] = i;
1802
2/2
✓ Branch 0 taken 723 times.
✓ Branch 1 taken 29841 times.
 30564 if (cpe->ch[1].ics.predictor_present &&
1803
2/2
✓ Branch 0 taken 538 times.
✓ Branch 1 taken 185 times.
 723 (ac->oc[1].m4ac.object_type != AOT_AAC_MAIN))
1804
2/2
✓ Branch 1 taken 404 times.
✓ Branch 2 taken 134 times.
 538 if ((cpe->ch[1].ics.ltp.present = get_bits(gb, 1)))
1805 404 decode_ltp(ac, &cpe->ch[1].ics.ltp, gb, cpe->ch[1].ics.max_sfb);
1806 30564 ms_present = get_bits(gb, 2);
1807
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 30564 times.
 30564 if (ms_present == 3) {
1808 ✗ av_log(ac->avctx, AV_LOG_ERROR, "ms_present = 3 is reserved.\n");
1809 ✗ return AVERROR_INVALIDDATA;
1810
2/2
✓ Branch 0 taken 27052 times.
✓ Branch 1 taken 3512 times.
 30564 } else if (ms_present)
1811 27052 decode_mid_side_stereo(cpe, gb, ms_present);
1812 }
1813
1/2
✗ Branch 1 not taken.
✓ Branch 2 taken 30786 times.
 30786 if ((ret = ff_aac_decode_ics(ac, &cpe->ch[0], gb, common_window, 0)))
1814 ✗ return ret;
1815
1/2
✗ Branch 1 not taken.
✓ Branch 2 taken 30786 times.
 30786 if ((ret = ff_aac_decode_ics(ac, &cpe->ch[1], gb, common_window, 0)))
1816 ✗ return ret;
1817
1818
2/2
✓ Branch 0 taken 30564 times.
✓ Branch 1 taken 222 times.
 30786 if (common_window) {
1819
2/2
✓ Branch 0 taken 27052 times.
✓ Branch 1 taken 3512 times.
 30564 if (ms_present)
1820 27052 ac->dsp.apply_mid_side_stereo(ac, cpe);
1821
2/2
✓ Branch 0 taken 647 times.
✓ Branch 1 taken 29917 times.
 30564 if (ac->oc[1].m4ac.object_type == AOT_AAC_MAIN) {
1822 647 ac->dsp.apply_prediction(ac, &cpe->ch[0]);
1823 647 ac->dsp.apply_prediction(ac, &cpe->ch[1]);
1824 }
1825 }
1826
1827 30786 ac->dsp.apply_intensity_stereo(ac, cpe, ms_present);
1828 30786 return 0;
1829 }
1830
1831 /**
1832 * Parse whether channels are to be excluded from Dynamic Range Compression; reference: table 4.53.
1833 *
1834 * @return Returns number of bytes consumed.
1835 */
1836 4 static int decode_drc_channel_exclusions(DynamicRangeControl *che_drc,
1837 GetBitContext *gb)
1838 {
1839 int i;
1840 4 int num_excl_chan = 0;
1841
1842 do {
1843
2/2
✓ Branch 0 taken 28 times.
✓ Branch 1 taken 4 times.
 32 for (i = 0; i < 7; i++)
1844 28 che_drc->exclude_mask[num_excl_chan++] = get_bits1(gb);
1845
2/4
✓ Branch 0 taken 4 times.
✗ Branch 1 not taken.
✗ Branch 3 not taken.
✓ Branch 4 taken 4 times.
 4 } while (num_excl_chan < MAX_CHANNELS - 7 && get_bits1(gb));
1846
1847 4 return num_excl_chan / 7;
1848 }
1849
1850 /**
1851 * Decode dynamic range information; reference: table 4.52.
1852 *
1853 * @return Returns number of bytes consumed.
1854 */
1855 880 static int decode_dynamic_range(DynamicRangeControl *che_drc,
1856 GetBitContext *gb)
1857 {
1858 880 int n = 1;
1859 880 int drc_num_bands = 1;
1860 int i;
1861
1862 /* pce_tag_present? */
1863
1/2
✗ Branch 1 not taken.
✓ Branch 2 taken 880 times.
 880 if (get_bits1(gb)) {
1864 ✗ che_drc->pce_instance_tag = get_bits(gb, 4);
1865 ✗ skip_bits(gb, 4); // tag_reserved_bits
1866 ✗ n++;
1867 }
1868
1869 /* excluded_chns_present? */
1870
2/2
✓ Branch 1 taken 4 times.
✓ Branch 2 taken 876 times.
 880 if (get_bits1(gb)) {
1871 4 n += decode_drc_channel_exclusions(che_drc, gb);
1872 }
1873
1874 /* drc_bands_present? */
1875
2/2
✓ Branch 1 taken 35 times.
✓ Branch 2 taken 845 times.
 880 if (get_bits1(gb)) {
1876 35 che_drc->band_incr = get_bits(gb, 4);
1877 35 che_drc->interpolation_scheme = get_bits(gb, 4);
1878 35 n++;
1879 35 drc_num_bands += che_drc->band_incr;
1880
2/2
✓ Branch 0 taken 105 times.
✓ Branch 1 taken 35 times.
 140 for (i = 0; i < drc_num_bands; i++) {
1881 105 che_drc->band_top[i] = get_bits(gb, 8);
1882 105 n++;
1883 }
1884 }
1885
1886 /* prog_ref_level_present? */
1887
2/2
✓ Branch 1 taken 878 times.
✓ Branch 2 taken 2 times.
 880 if (get_bits1(gb)) {
1888 878 che_drc->prog_ref_level = get_bits(gb, 7);
1889 878 skip_bits1(gb); // prog_ref_level_reserved_bits
1890 878 n++;
1891 }
1892
1893
2/2
✓ Branch 0 taken 950 times.
✓ Branch 1 taken 880 times.
 1830 for (i = 0; i < drc_num_bands; i++) {
1894 950 che_drc->dyn_rng_sgn[i] = get_bits1(gb);
1895 950 che_drc->dyn_rng_ctl[i] = get_bits(gb, 7);
1896 950 n++;
1897 }
1898
1899 880 return n;
1900 }
1901
1902 8953 static int decode_fill(AACDecContext *ac, GetBitContext *gb, int len) {
1903 uint8_t buf[256];
1904 int i, major, minor;
1905
1906
2/2
✓ Branch 0 taken 380 times.
✓ Branch 1 taken 8573 times.
 8953 if (len < 13+7*8)
1907 380 goto unknown;
1908
1909 8573 get_bits(gb, 13); len -= 13;
1910
1911
4/4
✓ Branch 0 taken 1136851 times.
✓ Branch 1 taken 443 times.
✓ Branch 2 taken 1128721 times.
✓ Branch 3 taken 8130 times.
 1137294 for(i=0; i+1<sizeof(buf) && len>=8; i++, len-=8)
1912 1128721 buf[i] = get_bits(gb, 8);
1913
1914 8573 buf[i] = 0;
1915
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 8573 times.
 8573 if (ac->avctx->debug & FF_DEBUG_PICT_INFO)
1916 ✗ av_log(ac->avctx, AV_LOG_DEBUG, "FILL:%s\n", buf);
1917
1918
2/2
✓ Branch 0 taken 8554 times.
✓ Branch 1 taken 19 times.
 8573 if (sscanf(buf, "libfaac %d.%d", &major, &minor) == 2){
1919 19 ac->avctx->internal->skip_samples = 1024;
1920 }
1921
1922 8554 unknown:
1923 8953 skip_bits_long(gb, len);
1924
1925 8953 return 0;
1926 }
1927
1928 /**
1929 * Decode extension data (incomplete); reference: table 4.51.
1930 *
1931 * @param cnt length of TYPE_FIL syntactic element in bytes
1932 *
1933 * @return Returns number of bytes consumed
1934 */
1935 23684 static int decode_extension_payload(AACDecContext *ac, GetBitContext *gb, int cnt,
1936 ChannelElement *che, enum RawDataBlockType elem_type)
1937 {
1938 23684 int crc_flag = 0;
1939 23684 int res = cnt;
1940 23684 int type = get_bits(gb, 4);
1941
1942
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 23684 times.
 23684 if (ac->avctx->debug & FF_DEBUG_STARTCODE)
1943 ✗ av_log(ac->avctx, AV_LOG_DEBUG, "extension type: %d len:%d\n", type, cnt);
1944
1945
4/5
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✓ Branch 1 taken 10901 times.
✓ Branch 2 taken 880 times.
✓ Branch 3 taken 8953 times.
✓ Branch 4 taken 2950 times.
 23684 switch (type) { // extension type
1946 ✗ case EXT_SBR_DATA_CRC:
1947 ✗ crc_flag++;
1948 10901 case EXT_SBR_DATA:
1949
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 10901 times.
 10901 if (!che) {
1950 ✗ av_log(ac->avctx, AV_LOG_ERROR, "SBR was found before the first channel element.\n");
1951 ✗ return res;
1952
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 10901 times.
 10901 } else if (ac->oc[1].m4ac.frame_length_short) {
1953 ✗ if (!ac->warned_960_sbr)
1954 ✗ avpriv_report_missing_feature(ac->avctx,
1955 "SBR with 960 frame length");
1956 ✗ ac->warned_960_sbr = 1;
1957 ✗ skip_bits_long(gb, 8 * cnt - 4);
1958 ✗ return res;
1959
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 10901 times.
 10901 } else if (!ac->oc[1].m4ac.sbr) {
1960 ✗ av_log(ac->avctx, AV_LOG_ERROR, "SBR signaled to be not-present but was found in the bitstream.\n");
1961 ✗ skip_bits_long(gb, 8 * cnt - 4);
1962 ✗ return res;
1963
3/4
✓ Branch 0 taken 22 times.
✓ Branch 1 taken 10879 times.
✗ Branch 2 not taken.
✓ Branch 3 taken 22 times.
 10901 } else if (ac->oc[1].m4ac.sbr == -1 && ac->oc[1].status == OC_LOCKED) {
1964 ✗ av_log(ac->avctx, AV_LOG_ERROR, "Implicit SBR was found with a first occurrence after the first frame.\n");
1965 ✗ skip_bits_long(gb, 8 * cnt - 4);
1966 ✗ return res;
1967
3/4
✓ Branch 0 taken 94 times.
✓ Branch 1 taken 10807 times.
✓ Branch 2 taken 94 times.
✗ Branch 3 not taken.
 10901 } else if (ac->oc[1].m4ac.ps == -1 && ac->oc[1].status < OC_LOCKED &&
1968
2/2
✓ Branch 0 taken 12 times.
✓ Branch 1 taken 82 times.
 94 ac->avctx->ch_layout.nb_channels == 1) {
1969 12 ac->oc[1].m4ac.sbr = 1;
1970 12 ac->oc[1].m4ac.ps = 1;
1971 12 ac->avctx->profile = AV_PROFILE_AAC_HE_V2;
1972 12 output_configure(ac, ac->oc[1].layout_map, ac->oc[1].layout_map_tags,
1973 ac->oc[1].status, 1);
1974 } else {
1975 10889 ac->oc[1].m4ac.sbr = 1;
1976 10889 ac->avctx->profile = AV_PROFILE_AAC_HE;
1977 }
1978
1979
2/2
✓ Branch 0 taken 4164 times.
✓ Branch 1 taken 6737 times.
 10901 if (CONFIG_AAC_FIXED_DECODER && ac->is_fixed)
1980 4164 res = ff_aac_sbr_decode_extension_fixed(ac, che, gb, crc_flag, cnt, elem_type);
1981 else if (CONFIG_AAC_DECODER)
1982 6737 res = ff_aac_sbr_decode_extension(ac, che, gb, crc_flag, cnt, elem_type);
1983
1984
1985
4/4
✓ Branch 0 taken 1999 times.
✓ Branch 1 taken 8902 times.
✓ Branch 2 taken 22 times.
✓ Branch 3 taken 1977 times.
 10901 if (ac->oc[1].m4ac.ps == 1 && !ac->warned_he_aac_mono) {
1986 22 av_log(ac->avctx, AV_LOG_VERBOSE, "Treating HE-AAC mono as stereo.\n");
1987 22 ac->warned_he_aac_mono = 1;
1988 }
1989 10901 break;
1990 880 case EXT_DYNAMIC_RANGE:
1991 880 res = decode_dynamic_range(&ac->che_drc, gb);
1992 880 break;
1993 8953 case EXT_FILL:
1994 8953 decode_fill(ac, gb, 8 * cnt - 4);
1995 8953 break;
1996 2950 case EXT_FILL_DATA:
1997 case EXT_DATA_ELEMENT:
1998 default:
1999 2950 skip_bits_long(gb, 8 * cnt - 4);
2000 2950 break;
2001 };
2002 23684 return res;
2003 }
2004
2005 /**
2006 * channel coupling transformation interface
2007 *
2008 * @param apply_coupling_method pointer to (in)dependent coupling function
2009 */
2010 176590 static void apply_channel_coupling(AACDecContext *ac, ChannelElement *cc,
2011 enum RawDataBlockType type, int elem_id,
2012 enum CouplingPoint coupling_point,
2013 void (*apply_coupling_method)(AACDecContext *ac, SingleChannelElement *target, ChannelElement *cce, int index))
2014 {
2015 int i, c;
2016
2017
2/2
✓ Branch 0 taken 2825440 times.
✓ Branch 1 taken 176590 times.
 3002030 for (i = 0; i < MAX_ELEM_ID; i++) {
2018 2825440 ChannelElement *cce = ac->che[TYPE_CCE][i];
2019 2825440 int index = 0;
2020
2021
4/4
✓ Branch 0 taken 11740 times.
✓ Branch 1 taken 2813700 times.
✓ Branch 2 taken 3915 times.
✓ Branch 3 taken 7825 times.
 2825440 if (cce && cce->coup.coupling_point == coupling_point) {
2022 3915 ChannelCoupling *coup = &cce->coup;
2023
2024
2/2
✓ Branch 0 taken 9402 times.
✓ Branch 1 taken 3915 times.
 13317 for (c = 0; c <= coup->num_coupled; c++) {
2025
4/4
✓ Branch 0 taken 5089 times.
✓ Branch 1 taken 4313 times.
✓ Branch 2 taken 2741 times.
✓ Branch 3 taken 2348 times.
 9402 if (coup->type[c] == type && coup->id_select[c] == elem_id) {
2026
2/2
✓ Branch 0 taken 2561 times.
✓ Branch 1 taken 180 times.
 2741 if (coup->ch_select[c] != 1) {
2027 2561 apply_coupling_method(ac, &cc->ch[0], cce, index);
2028
1/2
✓ Branch 0 taken 2561 times.
✗ Branch 1 not taken.
 2561 if (coup->ch_select[c] != 0)
2029 2561 index++;
2030 }
2031
2/2
✓ Branch 0 taken 2147 times.
✓ Branch 1 taken 594 times.
 2741 if (coup->ch_select[c] != 2)
2032 2147 apply_coupling_method(ac, &cc->ch[1], cce, index++);
2033 } else
2034
2/2
✓ Branch 0 taken 4720 times.
✓ Branch 1 taken 1941 times.
 6661 index += 1 + (coup->ch_select[c] == 3);
2035 }
2036 }
2037 }
2038 176590 }
2039
2040 /**
2041 * Convert spectral data to samples, applying all supported tools as appropriate.
2042 */
2043 50104 static void spectral_to_sample(AACDecContext *ac, int samples)
2044 {
2045 int i, type;
2046 void (*imdct_and_window)(AACDecContext *ac, SingleChannelElement *sce);
2047
3/3
✓ Branch 0 taken 606 times.
✓ Branch 1 taken 16365 times.
✓ Branch 2 taken 33133 times.
 50104 switch (ac->oc[1].m4ac.object_type) {
2048 606 case AOT_ER_AAC_LD:
2049 606 imdct_and_window = ac->dsp.imdct_and_windowing_ld;
2050 606 break;
2051 16365 case AOT_ER_AAC_ELD:
2052 16365 imdct_and_window = ac->dsp.imdct_and_windowing_eld;
2053 16365 break;
2054 33133 default:
2055
2/2
✓ Branch 0 taken 387 times.
✓ Branch 1 taken 32746 times.
 33133 if (ac->oc[1].m4ac.frame_length_short)
2056 387 imdct_and_window = ac->dsp.imdct_and_windowing_960;
2057 else
2058 32746 imdct_and_window = ac->dsp.imdct_and_windowing;
2059 }
2060
2/2
✓ Branch 0 taken 200416 times.
✓ Branch 1 taken 50104 times.
 250520 for (type = 3; type >= 0; type--) {
2061
2/2
✓ Branch 0 taken 3206656 times.
✓ Branch 1 taken 200416 times.
 3407072 for (i = 0; i < MAX_ELEM_ID; i++) {
2062 3206656 ChannelElement *che = ac->che[type][i];
2063
4/4
✓ Branch 0 taken 63479 times.
✓ Branch 1 taken 3143177 times.
✓ Branch 2 taken 63150 times.
✓ Branch 3 taken 329 times.
 3206656 if (che && che->present) {
2064
2/2
✓ Branch 0 taken 58472 times.
✓ Branch 1 taken 4678 times.
 63150 if (type <= TYPE_CPE)
2065 58472 apply_channel_coupling(ac, che, type, i, BEFORE_TNS, ac->dsp.apply_dependent_coupling);
2066
2/2
✓ Branch 0 taken 1784 times.
✓ Branch 1 taken 61366 times.
 63150 if (ac->oc[1].m4ac.object_type == AOT_AAC_LTP) {
2067
2/2
✓ Branch 0 taken 538 times.
✓ Branch 1 taken 1246 times.
 1784 if (che->ch[0].ics.predictor_present) {
2068
2/2
✓ Branch 0 taken 382 times.
✓ Branch 1 taken 156 times.
 538 if (che->ch[0].ics.ltp.present)
2069 382 ac->dsp.apply_ltp(ac, &che->ch[0]);
2070
3/4
✓ Branch 0 taken 404 times.
✓ Branch 1 taken 134 times.
✓ Branch 2 taken 404 times.
✗ Branch 3 not taken.
 538 if (che->ch[1].ics.ltp.present && type == TYPE_CPE)
2071 404 ac->dsp.apply_ltp(ac, &che->ch[1]);
2072 }
2073 }
2074
2/2
✓ Branch 0 taken 4647 times.
✓ Branch 1 taken 58503 times.
 63150 if (che->ch[0].tns.present)
2075 4647 ac->dsp.apply_tns(che->ch[0].coeffs,
2076 &che->ch[0].tns, &che->ch[0].ics, 1);
2077
2/2
✓ Branch 0 taken 2308 times.
✓ Branch 1 taken 60842 times.
 63150 if (che->ch[1].tns.present)
2078 2308 ac->dsp.apply_tns(che->ch[1].coeffs,
2079 &che->ch[1].tns, &che->ch[1].ics, 1);
2080
2/2
✓ Branch 0 taken 58472 times.
✓ Branch 1 taken 4678 times.
 63150 if (type <= TYPE_CPE)
2081 58472 apply_channel_coupling(ac, che, type, i, BETWEEN_TNS_AND_IMDCT, ac->dsp.apply_dependent_coupling);
2082
4/4
✓ Branch 0 taken 1174 times.
✓ Branch 1 taken 61976 times.
✓ Branch 2 taken 393 times.
✓ Branch 3 taken 781 times.
 63150 if (type != TYPE_CCE || che->coup.coupling_point == AFTER_IMDCT) {
2083 62369 imdct_and_window(ac, &che->ch[0]);
2084
2/2
✓ Branch 0 taken 1784 times.
✓ Branch 1 taken 60585 times.
 62369 if (ac->oc[1].m4ac.object_type == AOT_AAC_LTP)
2085 1784 ac->dsp.update_ltp(ac, &che->ch[0]);
2086
2/2
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✓ Branch 1 taken 31583 times.
 62369 if (type == TYPE_CPE) {
2087 30786 imdct_and_window(ac, &che->ch[1]);
2088
2/2
✓ Branch 0 taken 1784 times.
✓ Branch 1 taken 29002 times.
 30786 if (ac->oc[1].m4ac.object_type == AOT_AAC_LTP)
2089 1784 ac->dsp.update_ltp(ac, &che->ch[1]);
2090 }
2091
2/2
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✓ Branch 1 taken 49958 times.
 62369 if (ac->oc[1].m4ac.sbr > 0) {
2092
2/2
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✓ Branch 1 taken 7493 times.
 12411 if (CONFIG_AAC_FIXED_DECODER && ac->is_fixed)
2093 4918 ff_aac_sbr_apply_fixed(ac, che, type,
2094 4918 (void *)che->ch[0].output,
2095 4918 (void *)che->ch[1].output);
2096 else if (CONFIG_AAC_DECODER)
2097 7493 ff_aac_sbr_apply(ac, che, type,
2098 7493 (void *)che->ch[0].output,
2099 7493 (void *)che->ch[1].output);
2100 }
2101 }
2102
2/2
✓ Branch 0 taken 59646 times.
✓ Branch 1 taken 3504 times.
 63150 if (type <= TYPE_CCE)
2103 59646 apply_channel_coupling(ac, che, type, i, AFTER_IMDCT, ac->dsp.apply_independent_coupling);
2104 63150 ac->dsp.clip_output(ac, che, type, samples);
2105 63150 che->present = 0;
2106
2/2
✓ Branch 0 taken 329 times.
✓ Branch 1 taken 3143177 times.
 3143506 } else if (che) {
2107 329 av_log(ac->avctx, AV_LOG_VERBOSE, "ChannelElement %d.%d missing \n", type, i);
2108 }
2109 }
2110 }
2111 50104 }
2112
2113 4114 static int parse_adts_frame_header(AACDecContext *ac, GetBitContext *gb)
2114 {
2115 int size;
2116 AACADTSHeaderInfo hdr_info;
2117 uint8_t layout_map[MAX_ELEM_ID*4][3];
2118 int layout_map_tags, ret;
2119
2120 4114 size = ff_adts_header_parse(gb, &hdr_info);
2121
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 4114 if (size > 0) {
2122
2/4
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✓ Branch 3 taken 4114 times.
 4114 if (!ac->warned_num_aac_frames && hdr_info.num_aac_frames != 1) {
2123 // This is 2 for "VLB " audio in NSV files.
2124 // See samples/nsv/vlb_audio.
2125 ✗ avpriv_report_missing_feature(ac->avctx,
2126 "More than one AAC RDB per ADTS frame");
2127 ✗ ac->warned_num_aac_frames = 1;
2128 }
2129 4114 push_output_configuration(ac);
2130
1/2
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✗ Branch 1 not taken.
 4114 if (hdr_info.chan_config) {
2131 4114 ac->oc[1].m4ac.chan_config = hdr_info.chan_config;
2132
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 4114 times.
 4114 if ((ret = set_default_channel_config(ac, ac->avctx,
2133 layout_map,
2134 &layout_map_tags,
2135 4114 hdr_info.chan_config)) < 0)
2136 ✗ return ret;
2137
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 4114 times.
 4114 if ((ret = output_configure(ac, layout_map, layout_map_tags,
2138 4114 FFMAX(ac->oc[1].status,
2139 OC_TRIAL_FRAME), 0)) < 0)
2140 ✗ return ret;
2141 } else {
2142 ✗ ac->oc[1].m4ac.chan_config = 0;
2143 /**
2144 * dual mono frames in Japanese DTV can have chan_config 0
2145 * WITHOUT specifying PCE.
2146 * thus, set dual mono as default.
2147 */
2148 ✗ if (ac->dmono_mode && ac->oc[0].status == OC_NONE) {
2149 ✗ layout_map_tags = 2;
2150 ✗ layout_map[0][0] = layout_map[1][0] = TYPE_SCE;
2151 ✗ layout_map[0][2] = layout_map[1][2] = AAC_CHANNEL_FRONT;
2152 ✗ layout_map[0][1] = 0;
2153 ✗ layout_map[1][1] = 1;
2154 ✗ if (output_configure(ac, layout_map, layout_map_tags,
2155 OC_TRIAL_FRAME, 0))
2156 ✗ return -7;
2157 }
2158 }
2159 4114 ac->oc[1].m4ac.sample_rate = hdr_info.sample_rate;
2160 4114 ac->oc[1].m4ac.sampling_index = hdr_info.sampling_index;
2161 4114 ac->oc[1].m4ac.object_type = hdr_info.object_type;
2162 4114 ac->oc[1].m4ac.frame_length_short = 0;
2163
2/2
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✓ Branch 1 taken 56 times.
 4114 if (ac->oc[0].status != OC_LOCKED ||
2164
1/2
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✗ Branch 1 not taken.
 4058 ac->oc[0].m4ac.chan_config != hdr_info.chan_config ||
2165
1/2
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✓ Branch 1 taken 4058 times.
 4058 ac->oc[0].m4ac.sample_rate != hdr_info.sample_rate) {
2166 56 ac->oc[1].m4ac.sbr = -1;
2167 56 ac->oc[1].m4ac.ps = -1;
2168 }
2169
2/2
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✓ Branch 1 taken 4113 times.
 4114 if (!hdr_info.crc_absent)
2170 1 skip_bits(gb, 16);
2171 }
2172 4114 return size;
2173 }
2174
2175 16971 static int aac_decode_er_frame(AVCodecContext *avctx, AVFrame *frame,
2176 int *got_frame_ptr, GetBitContext *gb)
2177 {
2178 16971 AACDecContext *ac = avctx->priv_data;
2179 16971 const MPEG4AudioConfig *const m4ac = &ac->oc[1].m4ac;
2180 ChannelElement *che;
2181 int err, i;
2182
2/2
✓ Branch 0 taken 3559 times.
✓ Branch 1 taken 13412 times.
 16971 int samples = m4ac->frame_length_short ? 960 : 1024;
2183 16971 int chan_config = m4ac->chan_config;
2184 16971 int aot = m4ac->object_type;
2185
2186
3/4
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✓ Branch 1 taken 606 times.
✓ Branch 2 taken 16365 times.
✗ Branch 3 not taken.
 16971 if (aot == AOT_ER_AAC_LD || aot == AOT_ER_AAC_ELD)
2187 16971 samples >>= 1;
2188
2189 16971 ac->frame = frame;
2190
2191
1/2
✗ Branch 1 not taken.
✓ Branch 2 taken 16971 times.
 16971 if ((err = frame_configure_elements(avctx)) < 0)
2192 ✗ return err;
2193
2194 // The AV_PROFILE_AAC_* defines are all object_type - 1
2195 // This may lead to an undefined profile being signaled
2196 16971 ac->avctx->profile = aot - 1;
2197
2198 16971 ac->tags_mapped = 0;
2199
2200
3/8
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✗ Branch 4 not taken.
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✓ Branch 7 taken 16971 times.
 16971 if (chan_config < 0 || (chan_config >= 8 && chan_config < 11) || chan_config >= 13) {
2201 ✗ avpriv_request_sample(avctx, "Unknown ER channel configuration %d",
2202 chan_config);
2203 ✗ return AVERROR_INVALIDDATA;
2204 }
2205
2/2
✓ Branch 0 taken 18789 times.
✓ Branch 1 taken 16971 times.
 35760 for (i = 0; i < ff_tags_per_config[chan_config]; i++) {
2206 18789 const int elem_type = ff_aac_channel_layout_map[chan_config-1][i][0];
2207 18789 const int elem_id = ff_aac_channel_layout_map[chan_config-1][i][1];
2208
1/2
✗ Branch 1 not taken.
✓ Branch 2 taken 18789 times.
 18789 if (!(che=get_che(ac, elem_type, elem_id))) {
2209 ✗ av_log(ac->avctx, AV_LOG_ERROR,
2210 "channel element %d.%d is not allocated\n",
2211 elem_type, elem_id);
2212 ✗ return AVERROR_INVALIDDATA;
2213 }
2214 18789 che->present = 1;
2215
2/2
✓ Branch 0 taken 2424 times.
✓ Branch 1 taken 16365 times.
 18789 if (aot != AOT_ER_AAC_ELD)
2216 2424 skip_bits(gb, 4);
2217
3/4
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✓ Branch 1 taken 11445 times.
✓ Branch 2 taken 606 times.
✗ Branch 3 not taken.
 18789 switch (elem_type) {
2218 6738 case TYPE_SCE:
2219 6738 err = ff_aac_decode_ics(ac, &che->ch[0], gb, 0, 0);
2220 6738 break;
2221 11445 case TYPE_CPE:
2222 11445 err = decode_cpe(ac, gb, che);
2223 11445 break;
2224 606 case TYPE_LFE:
2225 606 err = ff_aac_decode_ics(ac, &che->ch[0], gb, 0, 0);
2226 606 break;
2227 }
2228
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 18789 times.
 18789 if (err < 0)
2229 ✗ return err;
2230 }
2231
2232 16971 spectral_to_sample(ac, samples);
2233
2234
1/4
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✓ Branch 1 taken 16971 times.
✗ Branch 2 not taken.
✗ Branch 3 not taken.
 16971 if (!ac->frame->data[0] && samples) {
2235 ✗ av_log(avctx, AV_LOG_ERROR, "no frame data found\n");
2236 ✗ return AVERROR_INVALIDDATA;
2237 }
2238
2239 16971 ac->frame->nb_samples = samples;
2240 16971 ac->frame->sample_rate = avctx->sample_rate;
2241 16971 *got_frame_ptr = 1;
2242
2243 16971 skip_bits_long(gb, get_bits_left(gb));
2244 16971 return 0;
2245 }
2246
2247 33133 static int aac_decode_frame_int(AVCodecContext *avctx, AVFrame *frame,
2248 int *got_frame_ptr, GetBitContext *gb,
2249 const AVPacket *avpkt)
2250 {
2251 33133 AACDecContext *ac = avctx->priv_data;
2252 33133 ChannelElement *che = NULL, *che_prev = NULL;
2253 33133 enum RawDataBlockType elem_type, che_prev_type = TYPE_END;
2254 int err, elem_id;
2255 33133 int samples = 0, multiplier, audio_found = 0, pce_found = 0;
2256 33133 int is_dmono, sce_count = 0;
2257 int payload_alignment;
2258 33133 uint8_t che_presence[4][MAX_ELEM_ID] = {{0}};
2259
2260 33133 ac->frame = frame;
2261
2262
2/2
✓ Branch 1 taken 4114 times.
✓ Branch 2 taken 29019 times.
 33133 if (show_bits(gb, 12) == 0xfff) {
2263
1/2
✗ Branch 1 not taken.
✓ Branch 2 taken 4114 times.
 4114 if ((err = parse_adts_frame_header(ac, gb)) < 0) {
2264 ✗ av_log(avctx, AV_LOG_ERROR, "Error decoding AAC frame header.\n");
2265 ✗ goto fail;
2266 }
2267
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 4114 times.
 4114 if (ac->oc[1].m4ac.sampling_index > 12) {
2268 ✗ av_log(ac->avctx, AV_LOG_ERROR, "invalid sampling rate index %d\n", ac->oc[1].m4ac.sampling_index);
2269 ✗ err = AVERROR_INVALIDDATA;
2270 ✗ goto fail;
2271 }
2272 }
2273
2274
1/2
✗ Branch 1 not taken.
✓ Branch 2 taken 33133 times.
 33133 if ((err = frame_configure_elements(avctx)) < 0)
2275 ✗ goto fail;
2276
2277 // The AV_PROFILE_AAC_* defines are all object_type - 1
2278 // This may lead to an undefined profile being signaled
2279 33133 ac->avctx->profile = ac->oc[1].m4ac.object_type - 1;
2280
2281 33133 payload_alignment = get_bits_count(gb);
2282 33133 ac->tags_mapped = 0;
2283 // parse
2284
2/2
✓ Branch 1 taken 72405 times.
✓ Branch 2 taken 33133 times.
 105538 while ((elem_type = get_bits(gb, 3)) != TYPE_END) {
2285 72405 elem_id = get_bits(gb, 4);
2286
2287
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 72405 times.
 72405 if (avctx->debug & FF_DEBUG_STARTCODE)
2288 ✗ av_log(avctx, AV_LOG_DEBUG, "Elem type:%x id:%x\n", elem_type, elem_id);
2289
2290
1/4
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✗ Branch 2 not taken.
✗ Branch 3 not taken.
 72405 if (!avctx->ch_layout.nb_channels && elem_type != TYPE_PCE) {
2291 ✗ err = AVERROR_INVALIDDATA;
2292 ✗ goto fail;
2293 }
2294
2295
2/2
✓ Branch 0 taken 44361 times.
✓ Branch 1 taken 28044 times.
 72405 if (elem_type < TYPE_DSE) {
2296
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 44361 times.
 44361 if (che_presence[elem_type][elem_id]) {
2297 ✗ int error = che_presence[elem_type][elem_id] > 1;
2298 ✗ av_log(ac->avctx, error ? AV_LOG_ERROR : AV_LOG_DEBUG, "channel element %d.%d duplicate\n",
2299 elem_type, elem_id);
2300 ✗ if (error) {
2301 ✗ err = AVERROR_INVALIDDATA;
2302 ✗ goto fail;
2303 }
2304 }
2305 44361 che_presence[elem_type][elem_id]++;
2306
2307
1/2
✗ Branch 1 not taken.
✓ Branch 2 taken 44361 times.
 44361 if (!(che=get_che(ac, elem_type, elem_id))) {
2308 ✗ av_log(ac->avctx, AV_LOG_ERROR, "channel element %d.%d is not allocated\n",
2309 elem_type, elem_id);
2310 ✗ err = AVERROR_INVALIDDATA;
2311 ✗ goto fail;
2312 }
2313
2/2
✓ Branch 0 taken 387 times.
✓ Branch 1 taken 43974 times.
 44361 samples = ac->oc[1].m4ac.frame_length_short ? 960 : 1024;
2314 44361 che->present = 1;
2315 }
2316
2317
6/8
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✓ Branch 1 taken 19341 times.
✓ Branch 2 taken 1174 times.
✓ Branch 3 taken 2898 times.
✓ Branch 4 taken 2821 times.
✗ Branch 5 not taken.
✓ Branch 6 taken 25223 times.
✗ Branch 7 not taken.
 72405 switch (elem_type) {
2318
2319 20948 case TYPE_SCE:
2320 20948 err = ff_aac_decode_ics(ac, &che->ch[0], gb, 0, 0);
2321 20948 audio_found = 1;
2322 20948 sce_count++;
2323 20948 break;
2324
2325 19341 case TYPE_CPE:
2326 19341 err = decode_cpe(ac, gb, che);
2327 19341 audio_found = 1;
2328 19341 break;
2329
2330 1174 case TYPE_CCE:
2331 1174 err = ac->proc.decode_cce(ac, gb, che);
2332 1174 break;
2333
2334 2898 case TYPE_LFE:
2335 2898 err = ff_aac_decode_ics(ac, &che->ch[0], gb, 0, 0);
2336 2898 audio_found = 1;
2337 2898 break;
2338
2339 2821 case TYPE_DSE:
2340 2821 err = skip_data_stream_element(ac, gb);
2341 2821 break;
2342
2343 ✗ case TYPE_PCE: {
2344 ✗ uint8_t layout_map[MAX_ELEM_ID*4][3] = {{0}};
2345 int tags;
2346
2347 ✗ int pushed = push_output_configuration(ac);
2348 ✗ if (pce_found && !pushed) {
2349 ✗ err = AVERROR_INVALIDDATA;
2350 ✗ goto fail;
2351 }
2352
2353 ✗ tags = decode_pce(avctx, &ac->oc[1].m4ac, layout_map, gb,
2354 payload_alignment);
2355 ✗ if (tags < 0) {
2356 ✗ err = tags;
2357 ✗ break;
2358 }
2359 ✗ if (pce_found) {
2360 ✗ av_log(avctx, AV_LOG_ERROR,
2361 "Not evaluating a further program_config_element as this construct is dubious at best.\n");
2362 ✗ pop_output_configuration(ac);
2363 } else {
2364 ✗ err = output_configure(ac, layout_map, tags, OC_TRIAL_PCE, 1);
2365 ✗ if (!err)
2366 ✗ ac->oc[1].m4ac.chan_config = 0;
2367 ✗ pce_found = 1;
2368 }
2369 ✗ break;
2370 }
2371
2372 25223 case TYPE_FIL:
2373
2/2
✓ Branch 0 taken 16441 times.
✓ Branch 1 taken 8782 times.
 25223 if (elem_id == 15)
2374 16441 elem_id += get_bits(gb, 8) - 1;
2375
1/2
✗ Branch 1 not taken.
✓ Branch 2 taken 25223 times.
 25223 if (get_bits_left(gb) < 8 * elem_id) {
2376 ✗ av_log(avctx, AV_LOG_ERROR, "TYPE_FIL: "overread_err);
2377 ✗ err = AVERROR_INVALIDDATA;
2378 ✗ goto fail;
2379 }
2380 25223 err = 0;
2381
2/2
✓ Branch 0 taken 23684 times.
✓ Branch 1 taken 25223 times.
 48907 while (elem_id > 0) {
2382 23684 int ret = decode_extension_payload(ac, gb, elem_id, che_prev, che_prev_type);
2383
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 23684 times.
 23684 if (ret < 0) {
2384 ✗ err = ret;
2385 ✗ break;
2386 }
2387 23684 elem_id -= ret;
2388 }
2389 25223 break;
2390
2391 ✗ default:
2392 ✗ err = AVERROR_BUG; /* should not happen, but keeps compiler happy */
2393 ✗ break;
2394 }
2395
2396
2/2
✓ Branch 0 taken 44361 times.
✓ Branch 1 taken 28044 times.
 72405 if (elem_type < TYPE_DSE) {
2397 44361 che_prev = che;
2398 44361 che_prev_type = elem_type;
2399 }
2400
2401
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 72405 times.
 72405 if (err)
2402 ✗ goto fail;
2403
2404
1/2
✗ Branch 1 not taken.
✓ Branch 2 taken 72405 times.
 72405 if (get_bits_left(gb) < 3) {
2405 ✗ av_log(avctx, AV_LOG_ERROR, overread_err);
2406 ✗ err = AVERROR_INVALIDDATA;
2407 ✗ goto fail;
2408 }
2409 }
2410
2411
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 33133 times.
 33133 if (!avctx->ch_layout.nb_channels) {
2412 ✗ *got_frame_ptr = 0;
2413 ✗ return 0;
2414 }
2415
2416
4/4
✓ Branch 0 taken 7881 times.
✓ Branch 1 taken 25252 times.
✓ Branch 2 taken 5583 times.
✓ Branch 3 taken 2298 times.
 33133 multiplier = (ac->oc[1].m4ac.sbr == 1) ? ac->oc[1].m4ac.ext_sample_rate > ac->oc[1].m4ac.sample_rate : 0;
2417 33133 samples <<= multiplier;
2418
2419 33133 spectral_to_sample(ac, samples);
2420
2421
2/4
✓ Branch 0 taken 33133 times.
✗ Branch 1 not taken.
✓ Branch 2 taken 33133 times.
✗ Branch 3 not taken.
 33133 if (ac->oc[1].status && audio_found) {
2422 33133 avctx->sample_rate = ac->oc[1].m4ac.sample_rate << multiplier;
2423 33133 avctx->frame_size = samples;
2424 33133 ac->oc[1].status = OC_LOCKED;
2425 }
2426
2427
1/4
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✗ Branch 2 not taken.
✗ Branch 3 not taken.
 33133 if (!ac->frame->data[0] && samples) {
2428 ✗ av_log(avctx, AV_LOG_ERROR, "no frame data found\n");
2429 ✗ err = AVERROR_INVALIDDATA;
2430 ✗ goto fail;
2431 }
2432
2433
1/2
✓ Branch 0 taken 33133 times.
✗ Branch 1 not taken.
 33133 if (samples) {
2434 33133 ac->frame->nb_samples = samples;
2435 33133 ac->frame->sample_rate = avctx->sample_rate;
2436 } else
2437 ✗ av_frame_unref(ac->frame);
2438 33133 *got_frame_ptr = !!samples;
2439
2440 /* for dual-mono audio (SCE + SCE) */
2441
1/6
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✗ Branch 2 not taken.
✗ Branch 3 not taken.
✗ Branch 4 not taken.
✗ Branch 5 not taken.
 33133 is_dmono = ac->dmono_mode && sce_count == 2 &&
2442 ✗ !av_channel_layout_compare(&ac->oc[1].ch_layout,
2443 ✗ &(AVChannelLayout)AV_CHANNEL_LAYOUT_STEREO);
2444
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 33133 times.
 33133 if (is_dmono) {
2445 ✗ if (ac->dmono_mode == 1)
2446 ✗ frame->data[1] = frame->data[0];
2447 ✗ else if (ac->dmono_mode == 2)
2448 ✗ frame->data[0] = frame->data[1];
2449 }
2450
2451 33133 return 0;
2452 ✗ fail:
2453 ✗ pop_output_configuration(ac);
2454 ✗ return err;
2455 }
2456
2457 49589 static int aac_decode_frame(AVCodecContext *avctx, AVFrame *frame,
2458 int *got_frame_ptr, AVPacket *avpkt)
2459 {
2460 49589 AACDecContext *ac = avctx->priv_data;
2461 49589 const uint8_t *buf = avpkt->data;
2462 49589 int buf_size = avpkt->size;
2463 GetBitContext gb;
2464 int buf_consumed;
2465 int buf_offset;
2466 int err;
2467 size_t new_extradata_size;
2468 49589 const uint8_t *new_extradata = av_packet_get_side_data(avpkt,
2469 AV_PKT_DATA_NEW_EXTRADATA,
2470 &new_extradata_size);
2471 size_t jp_dualmono_size;
2472 49589 const uint8_t *jp_dualmono = av_packet_get_side_data(avpkt,
2473 AV_PKT_DATA_JP_DUALMONO,
2474 &jp_dualmono_size);
2475
2476
2/2
✓ Branch 0 taken 1 times.
✓ Branch 1 taken 49588 times.
 49589 if (new_extradata) {
2477 /* discard previous configuration */
2478 1 ac->oc[1].status = OC_NONE;
2479 1 err = decode_audio_specific_config(ac, ac->avctx, &ac->oc[1].m4ac,
2480 new_extradata,
2481 1 new_extradata_size * 8LL, 1);
2482
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 1 times.
 1 if (err < 0) {
2483 ✗ return err;
2484 }
2485 }
2486
2487 49589 ac->dmono_mode = 0;
2488
1/4
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✗ Branch 2 not taken.
✗ Branch 3 not taken.
 49589 if (jp_dualmono && jp_dualmono_size > 0)
2489 ✗ ac->dmono_mode = 1 + *jp_dualmono;
2490
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 49589 times.
 49589 if (ac->force_dmono_mode >= 0)
2491 ✗ ac->dmono_mode = ac->force_dmono_mode;
2492
2493
1/2
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✓ Branch 1 taken 49589 times.
 49589 if (INT_MAX / 8 <= buf_size)
2494 ✗ return AVERROR_INVALIDDATA;
2495
2496
1/2
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 49589 if ((err = init_get_bits8(&gb, buf, buf_size)) < 0)
2497 ✗ return err;
2498
2499
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 49589 switch (ac->oc[1].m4ac.object_type) {
2500 16971 case AOT_ER_AAC_LC:
2501 case AOT_ER_AAC_LTP:
2502 case AOT_ER_AAC_LD:
2503 case AOT_ER_AAC_ELD:
2504 16971 err = aac_decode_er_frame(avctx, frame, got_frame_ptr, &gb);
2505 16971 break;
2506 32618 default:
2507 32618 err = aac_decode_frame_int(avctx, frame, got_frame_ptr, &gb, avpkt);
2508 }
2509
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 49589 if (err < 0)
2510 ✗ return err;
2511
2512 49589 buf_consumed = (get_bits_count(&gb) + 7) >> 3;
2513
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 49589 for (buf_offset = buf_consumed; buf_offset < buf_size; buf_offset++)
2514 ✗ if (buf[buf_offset])
2515 ✗ break;
2516
2517
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 49589 return buf_size > buf_offset ? buf_consumed : buf_size;
2518 }
2519
2520 #include "aacdec_latm.h"
2521
2522 #define AACDEC_FLAGS AV_OPT_FLAG_DECODING_PARAM | AV_OPT_FLAG_AUDIO_PARAM
2523 #define OFF(field) offsetof(AACDecContext, field)
2524 static const AVOption options[] = {
2525 /**
2526 * AVOptions for Japanese DTV specific extensions (ADTS only)
2527 */
2528 {"dual_mono_mode", "Select the channel to decode for dual mono",
2529 OFF(force_dmono_mode), AV_OPT_TYPE_INT, {.i64=-1}, -1, 2,
2530 AACDEC_FLAGS, .unit = "dual_mono_mode"},
2531
2532 {"auto", "autoselection", 0, AV_OPT_TYPE_CONST, {.i64=-1}, INT_MIN, INT_MAX, AACDEC_FLAGS, .unit = "dual_mono_mode"},
2533 {"main", "Select Main/Left channel", 0, AV_OPT_TYPE_CONST, {.i64= 1}, INT_MIN, INT_MAX, AACDEC_FLAGS, .unit = "dual_mono_mode"},
2534 {"sub" , "Select Sub/Right channel", 0, AV_OPT_TYPE_CONST, {.i64= 2}, INT_MIN, INT_MAX, AACDEC_FLAGS, .unit = "dual_mono_mode"},
2535 {"both", "Select both channels", 0, AV_OPT_TYPE_CONST, {.i64= 0}, INT_MIN, INT_MAX, AACDEC_FLAGS, .unit = "dual_mono_mode"},
2536
2537 { "channel_order", "Order in which the channels are to be exported",
2538 OFF(output_channel_order), AV_OPT_TYPE_INT,
2539 { .i64 = CHANNEL_ORDER_DEFAULT }, 0, 1, AACDEC_FLAGS, .unit = "channel_order" },
2540 { "default", "normal libavcodec channel order", 0, AV_OPT_TYPE_CONST,
2541 { .i64 = CHANNEL_ORDER_DEFAULT }, .flags = AACDEC_FLAGS, .unit = "channel_order" },
2542 { "coded", "order in which the channels are coded in the bitstream",
2543 0, AV_OPT_TYPE_CONST, { .i64 = CHANNEL_ORDER_CODED }, .flags = AACDEC_FLAGS, .unit = "channel_order" },
2544
2545 {NULL},
2546 };
2547
2548 static const AVClass decoder_class = {
2549 .class_name = "AAC decoder",
2550 .item_name = av_default_item_name,
2551 .option = options,
2552 .version = LIBAVUTIL_VERSION_INT,
2553 };
2554
2555 #if CONFIG_AAC_DECODER
2556 const FFCodec ff_aac_decoder = {
2557 .p.name = "aac",
2558 CODEC_LONG_NAME("AAC (Advanced Audio Coding)"),
2559 .p.type = AVMEDIA_TYPE_AUDIO,
2560 .p.id = AV_CODEC_ID_AAC,
2561 .p.priv_class = &decoder_class,
2562 .priv_data_size = sizeof(AACDecContext),
2563 .init = aac_decode_init,
2564 .close = decode_close,
2565 FF_CODEC_DECODE_CB(aac_decode_frame),
2566 .p.sample_fmts = (const enum AVSampleFormat[]) {
2567 AV_SAMPLE_FMT_FLTP, AV_SAMPLE_FMT_NONE
2568 },
2569 .p.capabilities = AV_CODEC_CAP_CHANNEL_CONF | AV_CODEC_CAP_DR1,
2570 .caps_internal = FF_CODEC_CAP_INIT_CLEANUP,
2571 .p.ch_layouts = ff_aac_ch_layout,
2572 .flush = flush,
2573 .p.profiles = NULL_IF_CONFIG_SMALL(ff_aac_profiles),
2574 };
2575 #endif
2576
2577 #if CONFIG_AAC_FIXED_DECODER
2578 const FFCodec ff_aac_fixed_decoder = {
2579 .p.name = "aac_fixed",
2580 CODEC_LONG_NAME("AAC (Advanced Audio Coding)"),
2581 .p.type = AVMEDIA_TYPE_AUDIO,
2582 .p.id = AV_CODEC_ID_AAC,
2583 .p.priv_class = &decoder_class,
2584 .priv_data_size = sizeof(AACDecContext),
2585 .init = aac_decode_init_fixed,
2586 .close = decode_close,
2587 FF_CODEC_DECODE_CB(aac_decode_frame),
2588 .p.sample_fmts = (const enum AVSampleFormat[]) {
2589 AV_SAMPLE_FMT_S32P, AV_SAMPLE_FMT_NONE
2590 },
2591 .p.capabilities = AV_CODEC_CAP_CHANNEL_CONF | AV_CODEC_CAP_DR1,
2592 .caps_internal = FF_CODEC_CAP_INIT_CLEANUP,
2593 .p.ch_layouts = ff_aac_ch_layout,
2594 .p.profiles = NULL_IF_CONFIG_SMALL(ff_aac_profiles),
2595 .flush = flush,
2596 };
2597 #endif
2598