FFmpeg coverage

Directory: ../../../ffmpeg/
File: src/libavcodec/aac/aacdec.c
Date: 2026-02-12 10:37:11
Exec Total Coverage
Lines: 982 1351 72.7%
Functions: 45 47 95.7%
Branches: 637 1009 63.1%
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 #include "aacdec_usac.h"
44
45 #include "libavcodec/aac.h"
46 #include "libavcodec/aac_defines.h"
47 #include "libavcodec/aacsbr.h"
48 #include "libavcodec/aactab.h"
49 #include "libavcodec/adts_header.h"
50
51 #include "libavcodec/avcodec.h"
52 #include "libavcodec/internal.h"
53 #include "libavcodec/codec_internal.h"
54 #include "libavcodec/decode.h"
55 #include "libavcodec/profiles.h"
56
57 #include "libavutil/attributes.h"
58 #include "libavutil/error.h"
59 #include "libavutil/log.h"
60 #include "libavutil/macros.h"
61 #include "libavutil/mem.h"
62 #include "libavutil/opt.h"
63 #include "libavutil/tx.h"
64 #include "libavutil/version.h"
65 #include "libavutil/refstruct.h"
66
67 /*
68 * supported tools
69 *
70 * Support? Name
71 * N (code in SoC repo) gain control
72 * Y block switching
73 * Y window shapes - standard
74 * N window shapes - Low Delay
75 * Y filterbank - standard
76 * N (code in SoC repo) filterbank - Scalable Sample Rate
77 * Y Temporal Noise Shaping
78 * Y Long Term Prediction
79 * Y intensity stereo
80 * Y channel coupling
81 * Y frequency domain prediction
82 * Y Perceptual Noise Substitution
83 * Y Mid/Side stereo
84 * N Scalable Inverse AAC Quantization
85 * N Frequency Selective Switch
86 * N upsampling filter
87 * Y quantization & coding - AAC
88 * N quantization & coding - TwinVQ
89 * N quantization & coding - BSAC
90 * N AAC Error Resilience tools
91 * N Error Resilience payload syntax
92 * N Error Protection tool
93 * N CELP
94 * N Silence Compression
95 * N HVXC
96 * N HVXC 4kbits/s VR
97 * N Structured Audio tools
98 * N Structured Audio Sample Bank Format
99 * N MIDI
100 * N Harmonic and Individual Lines plus Noise
101 * N Text-To-Speech Interface
102 * Y Spectral Band Replication
103 * Y (not in this code) Layer-1
104 * Y (not in this code) Layer-2
105 * Y (not in this code) Layer-3
106 * N SinuSoidal Coding (Transient, Sinusoid, Noise)
107 * Y Parametric Stereo
108 * N Direct Stream Transfer
109 * Y (not in fixed point code) Enhanced AAC Low Delay (ER AAC ELD)
110 *
111 * Note: - HE AAC v1 comprises LC AAC with Spectral Band Replication.
112 * - HE AAC v2 comprises LC AAC with Spectral Band Replication and
113 Parametric Stereo.
114 */
115
116 #define overread_err "Input buffer exhausted before END element found\n"
117
118 564 static int count_channels(uint8_t (*layout)[3], int tags)
119 {
120 564 int i, sum = 0;
121
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 1716 for (i = 0; i < tags; i++) {
122 1152 int syn_ele = layout[i][0];
123 1152 int pos = layout[i][2];
124
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 2304 sum += (1 + (syn_ele == TYPE_CPE)) *
125
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 1152 (pos != AAC_CHANNEL_OFF && pos != AAC_CHANNEL_CC);
126 }
127 564 return sum;
128 }
129
130 /**
131 * Check for the channel element in the current channel position configuration.
132 * If it exists, make sure the appropriate element is allocated and map the
133 * channel order to match the internal FFmpeg channel layout.
134 *
135 * @param che_pos current channel position configuration
136 * @param type channel element type
137 * @param id channel element id
138 * @param channels count of the number of channels in the configuration
139 *
140 * @return Returns error status. 0 - OK, !0 - error
141 */
142 8120 static av_cold int che_configure(AACDecContext *ac,
143 enum ChannelPosition che_pos,
144 int type, int id, int *channels)
145 {
146
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 8120 if (*channels >= MAX_CHANNELS)
147 ✗ return AVERROR_INVALIDDATA;
148
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 8120 if (che_pos) {
149
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 8120 if (!ac->che[type][id]) {
150 412 int ret = ac->proc.sbr_ctx_alloc_init(ac, &ac->che[type][id], type);
151
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 412 if (ret < 0)
152 ✗ return ret;
153 }
154
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 8120 if (type != TYPE_CCE) {
155
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 8112 if (*channels >= MAX_CHANNELS - (type == TYPE_CPE || (type == TYPE_SCE && ac->oc[1].m4ac.ps == 1))) {
156 ✗ av_log(ac->avctx, AV_LOG_ERROR, "Too many channels\n");
157 ✗ return AVERROR_INVALIDDATA;
158 }
159 8112 ac->output_element[(*channels)++] = &ac->che[type][id]->ch[0];
160
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 8112 if (type == TYPE_CPE ||
161
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 795 (type == TYPE_SCE && ac->oc[1].m4ac.ps == 1)) {
162 7616 ac->output_element[(*channels)++] = &ac->che[type][id]->ch[1];
163 }
164 }
165 } else {
166 ✗ if (ac->che[type][id]) {
167 ✗ for (int i = 0; i < FF_ARRAY_ELEMS(ac->tag_che_map); i++) {
168 ✗ for (int j = 0; j < MAX_ELEM_ID; j++) {
169 ✗ if (ac->tag_che_map[i][j] == ac->che[type][id])
170 ✗ ac->tag_che_map[i][j] = NULL;
171 }
172 }
173 ✗ ac->proc.sbr_ctx_close(ac->che[type][id]);
174 }
175 ✗ av_freep(&ac->che[type][id]);
176 ✗ memset(ac->output_element, 0, sizeof(ac->output_element));
177 }
178 8120 return 0;
179 }
180
181 53597 static int frame_configure_elements(AVCodecContext *avctx)
182 {
183 53597 AACDecContext *ac = avctx->priv_data;
184 int type, id, ch, ret;
185
186 /* set channel pointers to internal buffers by default */
187
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 267985 for (type = 0; type < 4; type++) {
188
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 13935220 for (id = 0; id < MAX_ELEM_ID; id++) {
189 13720832 ChannelElement *che = ac->che[type][id];
190
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 13720832 if (che) {
191 66997 che->ch[0].output = che->ch[0].ret_buf;
192 66997 che->ch[1].output = che->ch[1].ret_buf;
193 }
194 }
195 }
196
197 /* get output buffer */
198 53597 av_frame_unref(ac->frame);
199
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 53597 if (!avctx->ch_layout.nb_channels)
200 ✗ return 1;
201
202 53597 ac->frame->nb_samples = 2048;
203
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 53597 if ((ret = ff_get_buffer(avctx, ac->frame, 0)) < 0)
204 ✗ return ret;
205
206 /* map output channel pointers to AVFrame data */
207
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 155357 for (ch = 0; ch < avctx->ch_layout.nb_channels; ch++) {
208
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 101760 if (ac->output_element[ch])
209 101760 ac->output_element[ch]->output = (void *)ac->frame->extended_data[ch];
210 }
211
212 53597 return 0;
213 }
214
215 struct elem_to_channel {
216 uint64_t av_position;
217 uint8_t syn_ele;
218 uint8_t elem_id;
219 uint8_t aac_position;
220 };
221
222 7238 static int assign_pair(struct elem_to_channel e2c_vec[MAX_ELEM_ID],
223 uint8_t (*layout_map)[3], int offset, uint64_t left,
224 uint64_t right, int pos, uint64_t *layout)
225 {
226
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 7238 if (layout_map[offset][0] == TYPE_CPE) {
227 7234 e2c_vec[offset] = (struct elem_to_channel) {
228 7234 .av_position = left | right,
229 .syn_ele = TYPE_CPE,
230 7234 .elem_id = layout_map[offset][1],
231 .aac_position = pos
232 };
233
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 7234 if (e2c_vec[offset].av_position != UINT64_MAX)
234 7234 *layout |= e2c_vec[offset].av_position;
235
236 7234 return 1;
237 } else {
238 4 e2c_vec[offset] = (struct elem_to_channel) {
239 .av_position = left,
240 .syn_ele = TYPE_SCE,
241 4 .elem_id = layout_map[offset][1],
242 .aac_position = pos
243 };
244 4 e2c_vec[offset + 1] = (struct elem_to_channel) {
245 .av_position = right,
246 .syn_ele = TYPE_SCE,
247 4 .elem_id = layout_map[offset + 1][1],
248 .aac_position = pos
249 };
250
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 4 if (left != UINT64_MAX)
251 4 *layout |= left;
252
253
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 4 if (right != UINT64_MAX)
254 4 *layout |= right;
255
256 4 return 2;
257 }
258 }
259
260 31636 static int count_paired_channels(uint8_t (*layout_map)[3], int tags, int pos,
261 int current)
262 {
263 31636 int num_pos_channels = 0;
264 31636 int first_cpe = 0;
265 31636 int sce_parity = 0;
266 int i;
267
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 39764 for (i = current; i < tags; i++) {
268
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 8497 if (layout_map[i][2] != pos)
269 369 break;
270
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 8128 if (layout_map[i][0] == TYPE_CPE) {
271
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 7258 if (sce_parity) {
272
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 73 if (pos == AAC_CHANNEL_FRONT && !first_cpe) {
273 73 sce_parity = 0;
274 } else {
275 ✗ return -1;
276 }
277 }
278 7258 num_pos_channels += 2;
279 7258 first_cpe = 1;
280 } else {
281 870 num_pos_channels++;
282 870 sce_parity ^= (pos != AAC_CHANNEL_LFE);
283 }
284 }
285
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 31636 if (sce_parity &&
286
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 722 (pos == AAC_CHANNEL_FRONT && first_cpe))
287 24 return -1;
288
289 31612 return num_pos_channels;
290 }
291
292 31636 static int assign_channels(struct elem_to_channel e2c_vec[MAX_ELEM_ID], uint8_t (*layout_map)[3],
293 uint64_t *layout, int tags, int layer, int pos, int *current)
294 {
295 31636 int i = *current, j = 0;
296 31636 int nb_channels = count_paired_channels(layout_map, tags, pos, i);
297
298
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 31636 if (nb_channels < 0 || nb_channels > 5)
299 24 return 0;
300
301
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 31612 if (pos == AAC_CHANNEL_LFE) {
302
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 7976 while (nb_channels) {
303
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 67 if (ff_aac_channel_map[layer][pos - 1][j] == AV_CHAN_NONE)
304 ✗ return -1;
305 67 e2c_vec[i] = (struct elem_to_channel) {
306 67 .av_position = 1ULL << ff_aac_channel_map[layer][pos - 1][j],
307 67 .syn_ele = layout_map[i][0],
308 67 .elem_id = layout_map[i][1],
309 .aac_position = pos
310 };
311 67 *layout |= e2c_vec[i].av_position;
312 67 i++;
313 67 j++;
314 67 nb_channels--;
315 }
316 7909 *current = i;
317
318 7909 return 0;
319 }
320
321
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 24474 while (nb_channels & 1) {
322
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 771 if (ff_aac_channel_map[layer][pos - 1][0] == AV_CHAN_NONE)
323 ✗ return -1;
324
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 771 if (ff_aac_channel_map[layer][pos - 1][0] == AV_CHAN_UNUSED)
325 ✗ break;
326 771 e2c_vec[i] = (struct elem_to_channel) {
327 771 .av_position = 1ULL << ff_aac_channel_map[layer][pos - 1][0],
328 771 .syn_ele = layout_map[i][0],
329 771 .elem_id = layout_map[i][1],
330 .aac_position = pos
331 };
332 771 *layout |= e2c_vec[i].av_position;
333 771 i++;
334 771 nb_channels--;
335 }
336
337
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 23703 j = (pos != AAC_CHANNEL_SIDE) && nb_channels <= 3 ? 3 : 1;
338
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 30941 while (nb_channels >= 2) {
339
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 7238 if (ff_aac_channel_map[layer][pos - 1][j] == AV_CHAN_NONE ||
340
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 7238 ff_aac_channel_map[layer][pos - 1][j+1] == AV_CHAN_NONE)
341 ✗ return -1;
342 14476 i += assign_pair(e2c_vec, layout_map, i,
343 7238 1ULL << ff_aac_channel_map[layer][pos - 1][j],
344 7238 1ULL << ff_aac_channel_map[layer][pos - 1][j+1],
345 pos, layout);
346 7238 j += 2;
347 7238 nb_channels -= 2;
348 }
349
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 23703 while (nb_channels & 1) {
350 ✗ if (ff_aac_channel_map[layer][pos - 1][5] == AV_CHAN_NONE)
351 ✗ return -1;
352 ✗ e2c_vec[i] = (struct elem_to_channel) {
353 ✗ .av_position = 1ULL << ff_aac_channel_map[layer][pos - 1][5],
354 ✗ .syn_ele = layout_map[i][0],
355 ✗ .elem_id = layout_map[i][1],
356 .aac_position = pos
357 };
358 ✗ *layout |= e2c_vec[i].av_position;
359 ✗ i++;
360 ✗ nb_channels--;
361 }
362
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 23703 if (nb_channels)
363 ✗ return -1;
364
365 23703 *current = i;
366
367 23703 return 0;
368 }
369
370 7877 static uint64_t sniff_channel_order(uint8_t (*layout_map)[3], int tags)
371 {
372 int i, n, total_non_cc_elements;
373 7877 struct elem_to_channel e2c_vec[4 * MAX_ELEM_ID] = { { 0 } };
374 7877 uint64_t layout = 0;
375
376
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 7877 if (FF_ARRAY_ELEMS(e2c_vec) < tags)
377 ✗ return 0;
378
379
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 15786 for (n = 0, i = 0; n < 3 && i < tags; n++) {
380 7909 int ret = assign_channels(e2c_vec, layout_map, &layout, tags, n, AAC_CHANNEL_FRONT, &i);
381
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 7909 if (ret < 0)
382 ✗ return 0;
383 7909 ret = assign_channels(e2c_vec, layout_map, &layout, tags, n, AAC_CHANNEL_SIDE, &i);
384
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 7909 if (ret < 0)
385 ✗ return 0;
386 7909 ret = assign_channels(e2c_vec, layout_map, &layout, tags, n, AAC_CHANNEL_BACK, &i);
387
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 7909 if (ret < 0)
388 ✗ return 0;
389 7909 ret = assign_channels(e2c_vec, layout_map, &layout, tags, n, AAC_CHANNEL_LFE, &i);
390
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 7909 if (ret < 0)
391 ✗ return 0;
392 }
393
394 7877 total_non_cc_elements = n = i;
395
396
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 7877 if (layout == AV_CH_LAYOUT_22POINT2) {
397 // For 22.2 reorder the result as needed
398 ✗ FFSWAP(struct elem_to_channel, e2c_vec[2], e2c_vec[0]); // FL & FR first (final), FC third
399 ✗ FFSWAP(struct elem_to_channel, e2c_vec[2], e2c_vec[1]); // FC second (final), FLc & FRc third
400 ✗ FFSWAP(struct elem_to_channel, e2c_vec[6], e2c_vec[2]); // LFE1 third (final), FLc & FRc seventh
401 ✗ FFSWAP(struct elem_to_channel, e2c_vec[4], e2c_vec[3]); // BL & BR fourth (final), SiL & SiR fifth
402 ✗ FFSWAP(struct elem_to_channel, e2c_vec[6], e2c_vec[4]); // FLc & FRc fifth (final), SiL & SiR seventh
403 ✗ FFSWAP(struct elem_to_channel, e2c_vec[7], e2c_vec[6]); // LFE2 seventh (final), SiL & SiR eight (final)
404 ✗ FFSWAP(struct elem_to_channel, e2c_vec[9], e2c_vec[8]); // TpFL & TpFR ninth (final), TFC tenth (final)
405 ✗ FFSWAP(struct elem_to_channel, e2c_vec[11], e2c_vec[10]); // TC eleventh (final), TpSiL & TpSiR twelfth
406 ✗ FFSWAP(struct elem_to_channel, e2c_vec[12], e2c_vec[11]); // TpBL & TpBR twelfth (final), TpSiL & TpSiR thirteenth (final)
407 } else {
408 // For everything else, utilize the AV channel position define as a
409 // stable sort.
410 do {
411 7958 int next_n = 0;
412
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 8303 for (i = 1; i < n; i++)
413
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 345 if (e2c_vec[i - 1].av_position > e2c_vec[i].av_position) {
414 148 FFSWAP(struct elem_to_channel, e2c_vec[i - 1], e2c_vec[i]);
415 148 next_n = i;
416 }
417 7958 n = next_n;
418
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 7958 } while (n > 0);
419
420 }
421
422
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 15957 for (i = 0; i < total_non_cc_elements; i++) {
423 8080 layout_map[i][0] = e2c_vec[i].syn_ele;
424 8080 layout_map[i][1] = e2c_vec[i].elem_id;
425 8080 layout_map[i][2] = e2c_vec[i].aac_position;
426 }
427
428 7877 return layout;
429 }
430
431 3709 static void copy_oc(OutputConfiguration *dst, OutputConfiguration *src)
432 {
433 int i;
434
435
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 3709 for (i = 0; i < src->usac.nb_elems; i++) {
436 ✗ AACUsacElemConfig *src_e = &src->usac.elems[i];
437 ✗ AACUsacElemConfig *dst_e = &dst->usac.elems[i];
438 /* dst_e->ext.pl_buf is guaranteed to be set to src_e->ext.pl_buf
439 * upon this function's return */
440 ✗ av_refstruct_replace(&dst_e->ext.pl_buf, src_e->ext.pl_buf);
441 }
442
443 /* Unref all additional buffers to close leaks */
444
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 3709 for (; i < dst->usac.nb_elems; i++)
445 ✗ av_refstruct_unref(&dst->usac.elems[i].ext.pl_buf);
446
447 /* Set all other properties */
448 3709 *dst = *src;
449 3709 }
450
451 /**
452 * Save current output configuration if and only if it has been locked.
453 */
454 3709 static int push_output_configuration(AACDecContext *ac)
455 {
456 3709 int pushed = 0;
457
458
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 3709 if (ac->oc[1].status == OC_LOCKED || ac->oc[0].status == OC_NONE) {
459 3709 copy_oc(&ac->oc[0], &ac->oc[1]);
460 3709 pushed = 1;
461 }
462 3709 ac->oc[1].status = OC_NONE;
463 3709 return pushed;
464 }
465
466 /**
467 * Restore the previous output configuration if and only if the current
468 * configuration is unlocked.
469 */
470 ✗ static void pop_output_configuration(AACDecContext *ac)
471 {
472 ✗ if (ac->oc[1].status != OC_LOCKED && ac->oc[0].status != OC_NONE) {
473 ✗ copy_oc(&ac->oc[1], &ac->oc[0]);
474
475 ✗ ac->avctx->ch_layout = ac->oc[1].ch_layout;
476 ✗ ff_aac_output_configure(ac, ac->oc[1].layout_map, ac->oc[1].layout_map_tags,
477 ac->oc[1].status, 0);
478 }
479 ✗ }
480
481 /**
482 * Configure output channel order based on the current program
483 * configuration element.
484 *
485 * @return Returns error status. 0 - OK, !0 - error
486 */
487 7877 int ff_aac_output_configure(AACDecContext *ac,
488 uint8_t layout_map[MAX_ELEM_ID * 4][3], int tags,
489 enum OCStatus oc_type, int get_new_frame)
490 {
491 7877 AVCodecContext *avctx = ac->avctx;
492 7877 int i, channels = 0, ret;
493 7877 uint64_t layout = 0;
494 7877 uint8_t id_map[TYPE_END][MAX_ELEM_ID] = {{ 0 }};
495 7877 uint8_t type_counts[TYPE_END] = { 0 };
496
497
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 7877 if (get_new_frame && !ac->frame)
498 ✗ return AVERROR_INVALIDDATA;
499
500
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 7877 if (ac->oc[1].layout_map != layout_map) {
501 3981 memcpy(ac->oc[1].layout_map, layout_map, tags * sizeof(layout_map[0]));
502 3981 ac->oc[1].layout_map_tags = tags;
503 }
504
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 15997 for (i = 0; i < tags; i++) {
505 8120 int type = layout_map[i][0];
506 8120 int id = layout_map[i][1];
507 8120 id_map[type][id] = type_counts[type]++;
508
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 8120 if (id_map[type][id] >= MAX_ELEM_ID) {
509 ✗ avpriv_request_sample(ac->avctx, "Too large remapped id");
510 ✗ return AVERROR_PATCHWELCOME;
511 }
512 }
513 // Try to sniff a reasonable channel order, otherwise output the
514 // channels in the order the PCE declared them.
515
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 7877 if (ac->output_channel_order == CHANNEL_ORDER_DEFAULT)
516 7877 layout = sniff_channel_order(layout_map, tags);
517
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 15997 for (i = 0; i < tags; i++) {
518 8120 int type = layout_map[i][0];
519 8120 int id = layout_map[i][1];
520 8120 int iid = id_map[type][id];
521 8120 int position = layout_map[i][2];
522 // Allocate or free elements depending on if they are in the
523 // current program configuration.
524 8120 ret = che_configure(ac, position, type, iid, &channels);
525
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 8120 if (ret < 0)
526 ✗ return ret;
527 8120 ac->tag_che_map[type][id] = ac->che[type][iid];
528 }
529
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 7877 if (ac->oc[1].m4ac.ps == 1 && channels == 2) {
530
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 366 if (layout == AV_CH_FRONT_CENTER) {
531 366 layout = AV_CH_FRONT_LEFT|AV_CH_FRONT_RIGHT;
532 } else {
533 ✗ layout = 0;
534 }
535 }
536
537 7877 av_channel_layout_uninit(&ac->oc[1].ch_layout);
538
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 7877 if (layout)
539 7869 av_channel_layout_from_mask(&ac->oc[1].ch_layout, layout);
540 else {
541 8 ac->oc[1].ch_layout.order = AV_CHANNEL_ORDER_UNSPEC;
542 8 ac->oc[1].ch_layout.nb_channels = channels;
543 }
544
545 7877 av_channel_layout_copy(&avctx->ch_layout, &ac->oc[1].ch_layout);
546 7877 ac->oc[1].status = oc_type;
547
548
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 7877 if (get_new_frame) {
549
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 12 if ((ret = frame_configure_elements(ac->avctx)) < 0)
550 ✗ return ret;
551 }
552
553 7877 return 0;
554 }
555
556 9 static av_cold void flush(AVCodecContext *avctx)
557 {
558 9 AACDecContext *ac= avctx->priv_data;
559 int type, i, j;
560
561
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 45 for (type = 3; type >= 0; type--) {
562
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 2340 for (i = 0; i < MAX_ELEM_ID; i++) {
563 2304 ChannelElement *che = ac->che[type][i];
564
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 2304 if (che) {
565
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 27 for (j = 0; j <= 1; j++) {
566 18 memset(che->ch[j].saved, 0, sizeof(che->ch[j].saved));
567 }
568 }
569 }
570 }
571
572 #if CONFIG_AAC_DECODER
573 9 ff_aac_usac_reset_state(ac, &ac->oc[1]);
574 #endif
575 9 }
576
577 /**
578 * Set up channel positions based on a default channel configuration
579 * as specified in table 1.17.
580 *
581 * @return Returns error status. 0 - OK, !0 - error
582 */
583 4250 int ff_aac_set_default_channel_config(AACDecContext *ac, AVCodecContext *avctx,
584 uint8_t (*layout_map)[3],
585 int *tags,
586 int channel_config)
587 {
588
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 4250 if (channel_config < 1 || (channel_config > 7 && channel_config < 11) ||
589 channel_config > 14) {
590 ✗ av_log(avctx, AV_LOG_ERROR,
591 "invalid default channel configuration (%d)\n",
592 channel_config);
593 ✗ return AVERROR_INVALIDDATA;
594 }
595 4250 *tags = ff_tags_per_config[channel_config];
596 4250 memcpy(layout_map, ff_aac_channel_layout_map[channel_config - 1],
597 4250 *tags * sizeof(*layout_map));
598
599 /*
600 * AAC specification has 7.1(wide) as a default layout for 8-channel streams.
601 * However, at least Nero AAC encoder encodes 7.1 streams using the default
602 * channel config 7, mapping the side channels of the original audio stream
603 * to the second AAC_CHANNEL_FRONT pair in the AAC stream. Similarly, e.g. FAAD
604 * decodes the second AAC_CHANNEL_FRONT pair as side channels, therefore decoding
605 * the incorrect streams as if they were correct (and as the encoder intended).
606 *
607 * As actual intended 7.1(wide) streams are very rare, default to assuming a
608 * 7.1 layout was intended.
609 */
610
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 4250 if (channel_config == 7 && avctx->strict_std_compliance < FF_COMPLIANCE_STRICT) {
611 ✗ layout_map[2][2] = AAC_CHANNEL_BACK;
612
613 ✗ if (!ac || !ac->warned_71_wide++) {
614 ✗ av_log(avctx, AV_LOG_INFO, "Assuming an incorrectly encoded 7.1 channel layout"
615 " instead of a spec-compliant 7.1(wide) layout, use -strict %d to decode"
616 " according to the specification instead.\n", FF_COMPLIANCE_STRICT);
617 }
618 }
619
620 4250 return 0;
621 }
622
623 66655 ChannelElement *ff_aac_get_che(AACDecContext *ac, int type, int elem_id)
624 {
625 /* For PCE based channel configurations map the channels solely based
626 * on tags. */
627
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 66655 if (!ac->oc[1].m4ac.chan_config) {
628 24152 return ac->tag_che_map[type][elem_id];
629 }
630 // Allow single CPE stereo files to be signalled with mono configuration.
631
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 42503 if (!ac->tags_mapped && type == TYPE_CPE &&
632
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 24116 ac->oc[1].m4ac.chan_config == 1) {
633 uint8_t layout_map[MAX_ELEM_ID*4][3];
634 int layout_map_tags;
635 ✗ push_output_configuration(ac);
636
637 ✗ av_log(ac->avctx, AV_LOG_DEBUG, "mono with CPE\n");
638
639 ✗ if (ff_aac_set_default_channel_config(ac, ac->avctx, layout_map,
640 &layout_map_tags, 2) < 0)
641 ✗ return NULL;
642 ✗ if (ff_aac_output_configure(ac, layout_map, layout_map_tags,
643 OC_TRIAL_FRAME, 1) < 0)
644 ✗ return NULL;
645
646 ✗ ac->oc[1].m4ac.chan_config = 2;
647 ✗ ac->oc[1].m4ac.ps = 0;
648 }
649 // And vice-versa
650
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 42503 if (!ac->tags_mapped && type == TYPE_SCE &&
651
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 15927 ac->oc[1].m4ac.chan_config == 2) {
652 uint8_t layout_map[MAX_ELEM_ID * 4][3];
653 int layout_map_tags;
654 ✗ push_output_configuration(ac);
655
656 ✗ av_log(ac->avctx, AV_LOG_DEBUG, "stereo with SCE\n");
657
658 ✗ layout_map_tags = 2;
659 ✗ layout_map[0][0] = layout_map[1][0] = TYPE_SCE;
660 ✗ layout_map[0][2] = layout_map[1][2] = AAC_CHANNEL_FRONT;
661 ✗ layout_map[0][1] = 0;
662 ✗ layout_map[1][1] = 1;
663 ✗ if (ff_aac_output_configure(ac, layout_map, layout_map_tags,
664 OC_TRIAL_FRAME, 1) < 0)
665 ✗ return NULL;
666
667 ✗ if (ac->oc[1].m4ac.sbr)
668 ✗ ac->oc[1].m4ac.ps = -1;
669 }
670 /* For indexed channel configurations map the channels solely based
671 * on position. */
672
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 42503 switch (ac->oc[1].m4ac.chan_config) {
673 ✗ case 14:
674 ✗ if (ac->tags_mapped > 2 && ((type == TYPE_CPE && elem_id < 3) ||
675 ✗ (type == TYPE_LFE && elem_id < 1))) {
676 ✗ ac->tags_mapped++;
677 ✗ return ac->tag_che_map[type][elem_id] = ac->che[type][elem_id];
678 }
679 case 13:
680 ✗ if (ac->tags_mapped > 3 && ((type == TYPE_CPE && elem_id < 8) ||
681 ✗ (type == TYPE_SCE && elem_id < 6) ||
682 ✗ (type == TYPE_LFE && elem_id < 2))) {
683 ✗ ac->tags_mapped++;
684 ✗ return ac->tag_che_map[type][elem_id] = ac->che[type][elem_id];
685 }
686 case 12:
687 case 7:
688 ✗ if (ac->tags_mapped == 3 && type == TYPE_CPE) {
689 ✗ ac->tags_mapped++;
690 ✗ return ac->tag_che_map[TYPE_CPE][elem_id] = ac->che[TYPE_CPE][2];
691 }
692 case 11:
693 ✗ if (ac->tags_mapped == 3 && type == TYPE_SCE) {
694 ✗ ac->tags_mapped++;
695 ✗ return ac->tag_che_map[TYPE_SCE][elem_id] = ac->che[TYPE_SCE][1];
696 }
697 case 6:
698 /* Some streams incorrectly code 5.1 audio as
699 * SCE[0] CPE[0] CPE[1] SCE[1]
700 * instead of
701 * SCE[0] CPE[0] CPE[1] LFE[0].
702 * If we seem to have encountered such a stream, transfer
703 * the LFE[0] element to the SCE[1]'s mapping */
704
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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)) {
705
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 820 if (!ac->warned_remapping_once && (type != TYPE_LFE || elem_id != 0)) {
706 ✗ av_log(ac->avctx, AV_LOG_WARNING,
707 "This stream seems to incorrectly report its last channel as %s[%d], mapping to LFE[0]\n",
708 type == TYPE_SCE ? "SCE" : "LFE", elem_id);
709 ✗ ac->warned_remapping_once++;
710 }
711 820 ac->tags_mapped++;
712 820 return ac->tag_che_map[type][elem_id] = ac->che[TYPE_LFE][0];
713 }
714 case 5:
715
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 2460 if (ac->tags_mapped == 2 && type == TYPE_CPE) {
716 820 ac->tags_mapped++;
717 820 return ac->tag_che_map[TYPE_CPE][elem_id] = ac->che[TYPE_CPE][1];
718 }
719 case 4:
720 /* Some streams incorrectly code 4.0 audio as
721 * SCE[0] CPE[0] LFE[0]
722 * instead of
723 * SCE[0] CPE[0] SCE[1].
724 * If we seem to have encountered such a stream, transfer
725 * the SCE[1] element to the LFE[0]'s mapping */
726
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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)) {
727 ✗ if (!ac->warned_remapping_once && (type != TYPE_SCE || elem_id != 1)) {
728 ✗ av_log(ac->avctx, AV_LOG_WARNING,
729 "This stream seems to incorrectly report its last channel as %s[%d], mapping to SCE[1]\n",
730 type == TYPE_SCE ? "SCE" : "LFE", elem_id);
731 ✗ ac->warned_remapping_once++;
732 }
733 ✗ ac->tags_mapped++;
734 ✗ return ac->tag_che_map[type][elem_id] = ac->che[TYPE_SCE][1];
735 }
736
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 1640 if (ac->tags_mapped == 2 &&
737 ✗ ac->oc[1].m4ac.chan_config == 4 &&
738 type == TYPE_SCE) {
739 ✗ ac->tags_mapped++;
740 ✗ return ac->tag_che_map[TYPE_SCE][elem_id] = ac->che[TYPE_SCE][1];
741 }
742 case 3:
743 case 2:
744
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 25756 if (ac->tags_mapped == (ac->oc[1].m4ac.chan_config != 2) &&
745 type == TYPE_CPE) {
746 24936 ac->tags_mapped++;
747 24936 return ac->tag_che_map[TYPE_CPE][elem_id] = ac->che[TYPE_CPE][0];
748
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 820 } else if (ac->tags_mapped == 1 && ac->oc[1].m4ac.chan_config == 2 &&
749 type == TYPE_SCE) {
750 ✗ ac->tags_mapped++;
751 ✗ return ac->tag_che_map[TYPE_SCE][elem_id] = ac->che[TYPE_SCE][1];
752 }
753 case 1:
754
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 15927 if (!ac->tags_mapped && type == TYPE_SCE) {
755 15927 ac->tags_mapped++;
756 15927 return ac->tag_che_map[TYPE_SCE][elem_id] = ac->che[TYPE_SCE][0];
757 }
758 default:
759 ✗ return NULL;
760 }
761 }
762
763 /**
764 * Decode an array of 4 bit element IDs, optionally interleaved with a
765 * stereo/mono switching bit.
766 *
767 * @param type speaker type/position for these channels
768 */
769 265 static void decode_channel_map(uint8_t layout_map[][3],
770 enum ChannelPosition type,
771 GetBitContext *gb, int n)
772 {
773
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 396 while (n--) {
774 enum RawDataBlockType syn_ele;
775
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 131 switch (type) {
776 111 case AAC_CHANNEL_FRONT:
777 case AAC_CHANNEL_BACK:
778 case AAC_CHANNEL_SIDE:
779 111 syn_ele = get_bits1(gb);
780 111 break;
781 8 case AAC_CHANNEL_CC:
782 8 skip_bits1(gb);
783 8 syn_ele = TYPE_CCE;
784 8 break;
785 12 case AAC_CHANNEL_LFE:
786 12 syn_ele = TYPE_LFE;
787 12 break;
788 ✗ default:
789 // AAC_CHANNEL_OFF has no channel map
790 ✗ av_assert0(0);
791 }
792 131 layout_map[0][0] = syn_ele;
793 131 layout_map[0][1] = get_bits(gb, 4);
794 131 layout_map[0][2] = type;
795 131 layout_map++;
796 }
797 265 }
798
799 53 static inline void relative_align_get_bits(GetBitContext *gb,
800 int reference_position) {
801 53 int n = (reference_position - get_bits_count(gb) & 7);
802
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 53 if (n)
803 47 skip_bits(gb, n);
804 53 }
805
806 /**
807 * Decode program configuration element; reference: table 4.2.
808 *
809 * @return Returns error status. 0 - OK, !0 - error
810 */
811 53 static int decode_pce(AVCodecContext *avctx, MPEG4AudioConfig *m4ac,
812 uint8_t (*layout_map)[3],
813 GetBitContext *gb, int byte_align_ref)
814 {
815 int num_front, num_side, num_back, num_lfe, num_assoc_data, num_cc;
816 int sampling_index;
817 int comment_len;
818 int tags;
819
820 53 skip_bits(gb, 2); // object_type
821
822 53 sampling_index = get_bits(gb, 4);
823
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 53 if (m4ac->sampling_index != sampling_index)
824 ✗ av_log(avctx, AV_LOG_WARNING,
825 "Sample rate index in program config element does not "
826 "match the sample rate index configured by the container.\n");
827
828 53 num_front = get_bits(gb, 4);
829 53 num_side = get_bits(gb, 4);
830 53 num_back = get_bits(gb, 4);
831 53 num_lfe = get_bits(gb, 2);
832 53 num_assoc_data = get_bits(gb, 3);
833 53 num_cc = get_bits(gb, 4);
834
835
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 53 if (get_bits1(gb))
836 ✗ skip_bits(gb, 4); // mono_mixdown_tag
837
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 53 if (get_bits1(gb))
838 ✗ skip_bits(gb, 4); // stereo_mixdown_tag
839
840
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 53 if (get_bits1(gb))
841 ✗ skip_bits(gb, 3); // mixdown_coeff_index and pseudo_surround
842
843
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 53 if (get_bits_left(gb) < 5 * (num_front + num_side + num_back + num_cc) + 4 *(num_lfe + num_assoc_data + num_cc)) {
844 ✗ av_log(avctx, AV_LOG_ERROR, "decode_pce: " overread_err);
845 ✗ return -1;
846 }
847 53 decode_channel_map(layout_map , AAC_CHANNEL_FRONT, gb, num_front);
848 53 tags = num_front;
849 53 decode_channel_map(layout_map + tags, AAC_CHANNEL_SIDE, gb, num_side);
850 53 tags += num_side;
851 53 decode_channel_map(layout_map + tags, AAC_CHANNEL_BACK, gb, num_back);
852 53 tags += num_back;
853 53 decode_channel_map(layout_map + tags, AAC_CHANNEL_LFE, gb, num_lfe);
854 53 tags += num_lfe;
855
856 53 skip_bits_long(gb, 4 * num_assoc_data);
857
858 53 decode_channel_map(layout_map + tags, AAC_CHANNEL_CC, gb, num_cc);
859 53 tags += num_cc;
860
861 53 relative_align_get_bits(gb, byte_align_ref);
862
863 /* comment field, first byte is length */
864 53 comment_len = get_bits(gb, 8) * 8;
865
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 53 if (get_bits_left(gb) < comment_len) {
866 ✗ av_log(avctx, AV_LOG_ERROR, "decode_pce: " overread_err);
867 ✗ return AVERROR_INVALIDDATA;
868 }
869 53 skip_bits_long(gb, comment_len);
870 53 return tags;
871 }
872
873 /**
874 * Decode GA "General Audio" specific configuration; reference: table 4.1.
875 *
876 * @param ac pointer to AACDecContext, may be null
877 * @param avctx pointer to AVCCodecContext, used for logging
878 *
879 * @return Returns error status. 0 - OK, !0 - error
880 */
881 564 static int decode_ga_specific_config(AACDecContext *ac, AVCodecContext *avctx,
882 GetBitContext *gb,
883 int get_bit_alignment,
884 MPEG4AudioConfig *m4ac,
885 int channel_config)
886 {
887 int extension_flag, ret, ep_config, res_flags;
888 uint8_t layout_map[MAX_ELEM_ID*4][3];
889 564 int tags = 0;
890
891 564 m4ac->frame_length_short = get_bits1(gb);
892
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 564 if (m4ac->frame_length_short && m4ac->sbr == 1) {
893 ✗ avpriv_report_missing_feature(avctx, "SBR with 960 frame length");
894 ✗ if (ac) ac->warned_960_sbr = 1;
895 ✗ m4ac->sbr = 0;
896 ✗ m4ac->ps = 0;
897 }
898
899
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 564 if (get_bits1(gb)) // dependsOnCoreCoder
900 ✗ skip_bits(gb, 14); // coreCoderDelay
901 564 extension_flag = get_bits1(gb);
902
903
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 564 if (m4ac->object_type == AOT_AAC_SCALABLE ||
904
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 564 m4ac->object_type == AOT_ER_AAC_SCALABLE)
905 ✗ skip_bits(gb, 3); // layerNr
906
907
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 564 if (channel_config == 0) {
908 53 skip_bits(gb, 4); // element_instance_tag
909 53 tags = decode_pce(avctx, m4ac, layout_map, gb, get_bit_alignment);
910
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 53 if (tags < 0)
911 ✗ return tags;
912 } else {
913
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 511 if ((ret = ff_aac_set_default_channel_config(ac, avctx, layout_map,
914 &tags, channel_config)))
915 ✗ return ret;
916 }
917
918
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 564 if (count_channels(layout_map, tags) > 1) {
919 470 m4ac->ps = 0;
920
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 94 } else if (m4ac->sbr == 1 && m4ac->ps == -1)
921 18 m4ac->ps = 1;
922
923
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 564 if (ac && (ret = ff_aac_output_configure(ac, layout_map, tags, OC_GLOBAL_HDR, 0)))
924 ✗ return ret;
925
926
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 564 if (extension_flag) {
927
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 4 switch (m4ac->object_type) {
928 ✗ case AOT_ER_BSAC:
929 ✗ skip_bits(gb, 5); // numOfSubFrame
930 ✗ skip_bits(gb, 11); // layer_length
931 ✗ break;
932 4 case AOT_ER_AAC_LC:
933 case AOT_ER_AAC_LTP:
934 case AOT_ER_AAC_SCALABLE:
935 case AOT_ER_AAC_LD:
936 4 res_flags = get_bits(gb, 3);
937
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 4 if (res_flags) {
938 ✗ avpriv_report_missing_feature(avctx,
939 "AAC data resilience (flags %x)",
940 res_flags);
941 ✗ return AVERROR_PATCHWELCOME;
942 }
943 4 break;
944 }
945 4 skip_bits1(gb); // extensionFlag3 (TBD in version 3)
946 }
947
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 564 switch (m4ac->object_type) {
948 4 case AOT_ER_AAC_LC:
949 case AOT_ER_AAC_LTP:
950 case AOT_ER_AAC_SCALABLE:
951 case AOT_ER_AAC_LD:
952 4 ep_config = get_bits(gb, 2);
953
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 4 if (ep_config) {
954 ✗ avpriv_report_missing_feature(avctx,
955 "epConfig %d", ep_config);
956 ✗ return AVERROR_PATCHWELCOME;
957 }
958 }
959 564 return 0;
960 }
961
962 10 static int decode_eld_specific_config(AACDecContext *ac, AVCodecContext *avctx,
963 GetBitContext *gb,
964 MPEG4AudioConfig *m4ac,
965 int channel_config)
966 {
967 int ret, ep_config, res_flags;
968 uint8_t layout_map[MAX_ELEM_ID*4][3];
969 10 int tags = 0;
970 10 const int ELDEXT_TERM = 0;
971
972 10 m4ac->ps = 0;
973 10 m4ac->sbr = 0;
974 10 m4ac->frame_length_short = get_bits1(gb);
975
976 10 res_flags = get_bits(gb, 3);
977
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 10 if (res_flags) {
978 ✗ avpriv_report_missing_feature(avctx,
979 "AAC data resilience (flags %x)",
980 res_flags);
981 ✗ return AVERROR_PATCHWELCOME;
982 }
983
984
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 10 if (get_bits1(gb)) { // ldSbrPresentFlag
985 ✗ avpriv_report_missing_feature(avctx,
986 "Low Delay SBR");
987 ✗ return AVERROR_PATCHWELCOME;
988 }
989
990
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 10 while (get_bits(gb, 4) != ELDEXT_TERM) {
991 ✗ int len = get_bits(gb, 4);
992 ✗ if (len == 15)
993 ✗ len += get_bits(gb, 8);
994 ✗ if (len == 15 + 255)
995 ✗ len += get_bits(gb, 16);
996 ✗ if (get_bits_left(gb) < len * 8 + 4) {
997 ✗ av_log(avctx, AV_LOG_ERROR, overread_err);
998 ✗ return AVERROR_INVALIDDATA;
999 }
1000 ✗ skip_bits_long(gb, 8 * len);
1001 }
1002
1003
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 10 if ((ret = ff_aac_set_default_channel_config(ac, avctx, layout_map,
1004 &tags, channel_config)))
1005 ✗ return ret;
1006
1007
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 10 if (ac && (ret = ff_aac_output_configure(ac, layout_map, tags, OC_GLOBAL_HDR, 0)))
1008 ✗ return ret;
1009
1010 10 ep_config = get_bits(gb, 2);
1011
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 10 if (ep_config) {
1012 ✗ avpriv_report_missing_feature(avctx,
1013 "epConfig %d", ep_config);
1014 ✗ return AVERROR_PATCHWELCOME;
1015 }
1016 10 return 0;
1017 }
1018
1019 /**
1020 * Decode audio specific configuration; reference: table 1.13.
1021 *
1022 * @param ac pointer to AACDecContext, may be null
1023 * @param avctx pointer to AVCCodecContext, used for logging
1024 * @param m4ac pointer to MPEG4AudioConfig, used for parsing
1025 * @param gb buffer holding an audio specific config
1026 * @param get_bit_alignment relative alignment for byte align operations
1027 * @param sync_extension look for an appended sync extension
1028 *
1029 * @return Returns error status or number of consumed bits. <0 - error
1030 */
1031 578 static int decode_audio_specific_config_gb(AACDecContext *ac,
1032 AVCodecContext *avctx,
1033 OutputConfiguration *oc,
1034 GetBitContext *gb,
1035 int get_bit_alignment,
1036 int sync_extension)
1037 {
1038 int i, ret;
1039 578 GetBitContext gbc = *gb;
1040 578 MPEG4AudioConfig *m4ac = &oc->m4ac;
1041 578 MPEG4AudioConfig m4ac_bak = *m4ac;
1042
1043
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 578 if ((i = ff_mpeg4audio_get_config_gb(m4ac, &gbc, sync_extension, avctx)) < 0) {
1044 ✗ *m4ac = m4ac_bak;
1045 ✗ return AVERROR_INVALIDDATA;
1046 }
1047
1048
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 578 if (m4ac->sampling_index > 12) {
1049 ✗ av_log(avctx, AV_LOG_ERROR,
1050 "invalid sampling rate index %d\n",
1051 m4ac->sampling_index);
1052 ✗ *m4ac = m4ac_bak;
1053 ✗ return AVERROR_INVALIDDATA;
1054 }
1055
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 578 if (m4ac->object_type == AOT_ER_AAC_LD &&
1056
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 4 (m4ac->sampling_index < 3 || m4ac->sampling_index > 7)) {
1057 ✗ av_log(avctx, AV_LOG_ERROR,
1058 "invalid low delay sampling rate index %d\n",
1059 m4ac->sampling_index);
1060 ✗ *m4ac = m4ac_bak;
1061 ✗ return AVERROR_INVALIDDATA;
1062 }
1063
1064 578 skip_bits_long(gb, i);
1065
1066
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 578 switch (m4ac->object_type) {
1067 564 case AOT_AAC_MAIN:
1068 case AOT_AAC_LC:
1069 case AOT_AAC_SSR:
1070 case AOT_AAC_LTP:
1071 case AOT_ER_AAC_LC:
1072 case AOT_ER_AAC_LD:
1073
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 564 if ((ret = decode_ga_specific_config(ac, avctx, gb, get_bit_alignment,
1074 &oc->m4ac, m4ac->chan_config)) < 0)
1075 ✗ return ret;
1076 564 break;
1077 10 case AOT_ER_AAC_ELD:
1078
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 10 if ((ret = decode_eld_specific_config(ac, avctx, gb,
1079 &oc->m4ac, m4ac->chan_config)) < 0)
1080 ✗ return ret;
1081 10 break;
1082 #if CONFIG_AAC_DECODER
1083 4 case AOT_USAC:
1084
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 4 if ((ret = ff_aac_usac_config_decode(ac, avctx, gb,
1085 oc, m4ac->chan_config)) < 0)
1086 ✗ return ret;
1087 4 break;
1088 #endif
1089 ✗ default:
1090 ✗ avpriv_report_missing_feature(avctx,
1091 "Audio object type %s%d",
1092 ✗ m4ac->sbr == 1 ? "SBR+" : "",
1093 m4ac->object_type);
1094 ✗ return AVERROR(ENOSYS);
1095 }
1096
1097 ff_dlog(avctx,
1098 "AOT %d chan config %d sampling index %d (%d) SBR %d PS %d\n",
1099 m4ac->object_type, m4ac->chan_config, m4ac->sampling_index,
1100 m4ac->sample_rate, m4ac->sbr,
1101 m4ac->ps);
1102
1103 578 return get_bits_count(gb);
1104 }
1105
1106 256 static int decode_audio_specific_config(AACDecContext *ac,
1107 AVCodecContext *avctx,
1108 OutputConfiguration *oc,
1109 const uint8_t *data, int64_t bit_size,
1110 int sync_extension)
1111 {
1112 int i, ret;
1113 GetBitContext gb;
1114
1115
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 256 if (bit_size < 0 || bit_size > INT_MAX) {
1116 ✗ av_log(avctx, AV_LOG_ERROR, "Audio specific config size is invalid\n");
1117 ✗ return AVERROR_INVALIDDATA;
1118 }
1119
1120 ff_dlog(avctx, "audio specific config size %d\n", (int)bit_size >> 3);
1121
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 1927 for (i = 0; i < bit_size >> 3; i++)
1122 ff_dlog(avctx, "%02x ", data[i]);
1123 ff_dlog(avctx, "\n");
1124
1125
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 256 if ((ret = init_get_bits(&gb, data, bit_size)) < 0)
1126 ✗ return ret;
1127
1128 256 return decode_audio_specific_config_gb(ac, avctx, oc, &gb, 0,
1129 sync_extension);
1130 }
1131
1132 308 static av_cold int decode_close(AVCodecContext *avctx)
1133 {
1134 308 AACDecContext *ac = avctx->priv_data;
1135
1136
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 924 for (int i = 0; i < 2; i++) {
1137 616 OutputConfiguration *oc = &ac->oc[i];
1138 616 AACUSACConfig *usac = &oc->usac;
1139
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 624 for (int j = 0; j < usac->nb_elems; j++) {
1140 8 AACUsacElemConfig *ec = &usac->elems[j];
1141 8 av_refstruct_unref(&ec->ext.pl_buf);
1142 }
1143
1144 616 av_channel_layout_uninit(&ac->oc[i].ch_layout);
1145 }
1146
1147
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 1540 for (int type = 0; type < FF_ARRAY_ELEMS(ac->che); type++) {
1148
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 80080 for (int i = 0; i < MAX_ELEM_ID; i++) {
1149
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 78848 if (ac->che[type][i]) {
1150 412 ac->proc.sbr_ctx_close(ac->che[type][i]);
1151 412 av_freep(&ac->che[type][i]);
1152 }
1153 }
1154 }
1155
1156 308 av_tx_uninit(&ac->mdct96);
1157 308 av_tx_uninit(&ac->mdct120);
1158 308 av_tx_uninit(&ac->mdct128);
1159 308 av_tx_uninit(&ac->mdct480);
1160 308 av_tx_uninit(&ac->mdct512);
1161 308 av_tx_uninit(&ac->mdct768);
1162 308 av_tx_uninit(&ac->mdct960);
1163 308 av_tx_uninit(&ac->mdct1024);
1164 308 av_tx_uninit(&ac->mdct_ltp);
1165
1166 // Compiler will optimize this branch away.
1167
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 308 if (ac->is_fixed)
1168 23 av_freep(&ac->RENAME_FIXED(fdsp));
1169 else
1170 285 av_freep(&ac->fdsp);
1171
1172 308 return 0;
1173 }
1174
1175 308 static av_cold int init_dsp(AVCodecContext *avctx)
1176 {
1177 308 AACDecContext *ac = avctx->priv_data;
1178 308 int is_fixed = ac->is_fixed, ret;
1179 float scale_fixed, scale_float;
1180
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 308 const float *const scalep = is_fixed ? &scale_fixed : &scale_float;
1181
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 308 enum AVTXType tx_type = is_fixed ? AV_TX_INT32_MDCT : AV_TX_FLOAT_MDCT;
1182
1183 #define MDCT_INIT(s, fn, len, sval) \
1184 scale_fixed = (sval) * 128.0f; \
1185 scale_float = (sval) / 32768.0f; \
1186 ret = av_tx_init(&s, &fn, tx_type, 1, len, scalep, 0); \
1187 if (ret < 0) \
1188 return ret
1189
1190
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 308 MDCT_INIT(ac->mdct96, ac->mdct96_fn, 96, 1.0/96);
1191
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 308 MDCT_INIT(ac->mdct120, ac->mdct120_fn, 120, 1.0/120);
1192
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 308 MDCT_INIT(ac->mdct128, ac->mdct128_fn, 128, 1.0/128);
1193
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 308 MDCT_INIT(ac->mdct480, ac->mdct480_fn, 480, 1.0/480);
1194
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 308 MDCT_INIT(ac->mdct512, ac->mdct512_fn, 512, 1.0/512);
1195
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 308 MDCT_INIT(ac->mdct768, ac->mdct768_fn, 768, 1.0/768);
1196
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 308 MDCT_INIT(ac->mdct960, ac->mdct960_fn, 960, 1.0/960);
1197
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 308 MDCT_INIT(ac->mdct1024, ac->mdct1024_fn, 1024, 1.0/1024);
1198 #undef MDCT_INIT
1199
1200 /* LTP forward MDCT */
1201 308 scale_fixed = -1.0;
1202 308 scale_float = -32786.0*2 + 36;
1203 308 ret = av_tx_init(&ac->mdct_ltp, &ac->mdct_ltp_fn, tx_type, 0, 1024, scalep, 0);
1204
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 308 if (ret < 0)
1205 ✗ return ret;
1206
1207 308 return 0;
1208 }
1209
1210 308 av_cold int ff_aac_decode_init(AVCodecContext *avctx)
1211 {
1212 308 AACDecContext *ac = avctx->priv_data;
1213 int ret;
1214
1215
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 308 if (avctx->sample_rate > 96000)
1216 ✗ return AVERROR_INVALIDDATA;
1217
1218 308 ff_aacdec_common_init_once();
1219
1220 308 ac->avctx = avctx;
1221 308 ac->oc[1].m4ac.sample_rate = avctx->sample_rate;
1222
1223
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 308 if (avctx->extradata_size > 0) {
1224
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 248 if ((ret = decode_audio_specific_config(ac, ac->avctx, &ac->oc[1],
1225 248 avctx->extradata,
1226 248 avctx->extradata_size * 8LL,
1227 1)) < 0)
1228 ✗ return ret;
1229 } else {
1230 int sr, i;
1231 uint8_t layout_map[MAX_ELEM_ID*4][3];
1232 int layout_map_tags;
1233
1234 60 sr = ff_aac_sample_rate_idx(avctx->sample_rate);
1235 60 ac->oc[1].m4ac.sampling_index = sr;
1236 60 ac->oc[1].m4ac.channels = avctx->ch_layout.nb_channels;
1237 60 ac->oc[1].m4ac.sbr = -1;
1238 60 ac->oc[1].m4ac.ps = -1;
1239
1240
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 106 for (i = 0; i < FF_ARRAY_ELEMS(ff_mpeg4audio_channels); i++)
1241
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 106 if (ff_mpeg4audio_channels[i] == avctx->ch_layout.nb_channels)
1242 60 break;
1243
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 60 if (i == FF_ARRAY_ELEMS(ff_mpeg4audio_channels)) {
1244 ✗ i = 0;
1245 }
1246 60 ac->oc[1].m4ac.chan_config = i;
1247
1248
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 60 if (ac->oc[1].m4ac.chan_config) {
1249 23 int ret = ff_aac_set_default_channel_config(ac, avctx, layout_map,
1250 &layout_map_tags,
1251 ac->oc[1].m4ac.chan_config);
1252
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 23 if (!ret)
1253 23 ff_aac_output_configure(ac, layout_map, layout_map_tags,
1254 OC_GLOBAL_HDR, 0);
1255 ✗ else if (avctx->err_recognition & AV_EF_EXPLODE)
1256 ✗ return AVERROR_INVALIDDATA;
1257 }
1258 }
1259
1260
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 308 if (avctx->ch_layout.nb_channels > MAX_CHANNELS) {
1261 ✗ av_log(avctx, AV_LOG_ERROR, "Too many channels\n");
1262 ✗ return AVERROR_INVALIDDATA;
1263 }
1264
1265 308 ac->random_state = 0x1f2e3d4c;
1266
1267 308 return init_dsp(avctx);
1268 }
1269
1270 /**
1271 * Skip data_stream_element; reference: table 4.10.
1272 */
1273 2823 static int skip_data_stream_element(AACDecContext *ac, GetBitContext *gb)
1274 {
1275 2823 int byte_align = get_bits1(gb);
1276 2823 int count = get_bits(gb, 8);
1277
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 2823 if (count == 255)
1278 ✗ count += get_bits(gb, 8);
1279
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 2823 if (byte_align)
1280 2456 align_get_bits(gb);
1281
1282
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 2823 if (get_bits_left(gb) < 8 * count) {
1283 ✗ av_log(ac->avctx, AV_LOG_ERROR, "skip_data_stream_element: "overread_err);
1284 ✗ return AVERROR_INVALIDDATA;
1285 }
1286 2823 skip_bits_long(gb, 8 * count);
1287 2823 return 0;
1288 }
1289
1290 1273 static int decode_prediction(AACDecContext *ac, IndividualChannelStream *ics,
1291 GetBitContext *gb)
1292 {
1293 int sfb;
1294
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 1273 if (get_bits1(gb)) {
1295 212 ics->predictor_reset_group = get_bits(gb, 5);
1296
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 212 if (ics->predictor_reset_group == 0 ||
1297
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 212 ics->predictor_reset_group > 30) {
1298 ✗ av_log(ac->avctx, AV_LOG_ERROR,
1299 "Invalid Predictor Reset Group.\n");
1300 ✗ return AVERROR_INVALIDDATA;
1301 }
1302 }
1303
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 41528 for (sfb = 0; sfb < FFMIN(ics->max_sfb, ff_aac_pred_sfb_max[ac->oc[1].m4ac.sampling_index]); sfb++) {
1304 40255 ics->prediction_used[sfb] = get_bits1(gb);
1305 }
1306 1273 return 0;
1307 }
1308
1309 /**
1310 * Decode Long Term Prediction data; reference: table 4.xx.
1311 */
1312 786 static void decode_ltp(AACDecContext *ac, LongTermPrediction *ltp,
1313 GetBitContext *gb, uint8_t max_sfb)
1314 {
1315 int sfb;
1316
1317 786 ltp->lag = get_bits(gb, 11);
1318
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 786 if (CONFIG_AAC_FIXED_DECODER && ac->is_fixed)
1319 393 ltp->coef_fixed = Q30(ff_ltp_coef[get_bits(gb, 3)]);
1320 else if (CONFIG_AAC_DECODER)
1321 393 ltp->coef = ff_ltp_coef[get_bits(gb, 3)];
1322
1323
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 32226 for (sfb = 0; sfb < FFMIN(max_sfb, MAX_LTP_LONG_SFB); sfb++)
1324 31440 ltp->used[sfb] = get_bits1(gb);
1325 786 }
1326
1327 /**
1328 * Decode Individual Channel Stream info; reference: table 4.6.
1329 */
1330 62886 static int decode_ics_info(AACDecContext *ac, IndividualChannelStream *ics,
1331 GetBitContext *gb)
1332 {
1333 62886 const MPEG4AudioConfig *const m4ac = &ac->oc[1].m4ac;
1334 62886 const int aot = m4ac->object_type;
1335 62886 const int sampling_index = m4ac->sampling_index;
1336 62886 int ret_fail = AVERROR_INVALIDDATA;
1337
1338
2/2
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 62886 if (aot != AOT_ER_AAC_ELD) {
1339
1/2
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 46521 if (get_bits1(gb)) {
1340 ✗ av_log(ac->avctx, AV_LOG_ERROR, "Reserved bit set.\n");
1341 ✗ if (ac->avctx->err_recognition & AV_EF_BITSTREAM)
1342 ✗ return AVERROR_INVALIDDATA;
1343 }
1344 46521 ics->window_sequence[1] = ics->window_sequence[0];
1345 46521 ics->window_sequence[0] = get_bits(gb, 2);
1346
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 46521 if (aot == AOT_ER_AAC_LD &&
1347
1/2
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 2424 ics->window_sequence[0] != ONLY_LONG_SEQUENCE) {
1348 ✗ av_log(ac->avctx, AV_LOG_ERROR,
1349 "AAC LD is only defined for ONLY_LONG_SEQUENCE but "
1350 ✗ "window sequence %d found.\n", ics->window_sequence[0]);
1351 ✗ ics->window_sequence[0] = ONLY_LONG_SEQUENCE;
1352 ✗ return AVERROR_INVALIDDATA;
1353 }
1354 46521 ics->use_kb_window[1] = ics->use_kb_window[0];
1355 46521 ics->use_kb_window[0] = get_bits1(gb);
1356 }
1357 62886 ics->prev_num_window_groups = FFMAX(ics->num_window_groups, 1);
1358 62886 ics->num_window_groups = 1;
1359 62886 ics->group_len[0] = 1;
1360
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 62886 if (ics->window_sequence[0] == EIGHT_SHORT_SEQUENCE) {
1361 int i;
1362 1292 ics->max_sfb = get_bits(gb, 4);
1363
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 10336 for (i = 0; i < 7; i++) {
1364
2/2
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✓ Branch 2 taken 3301 times.
 9044 if (get_bits1(gb)) {
1365 5743 ics->group_len[ics->num_window_groups - 1]++;
1366 } else {
1367 3301 ics->num_window_groups++;
1368 3301 ics->group_len[ics->num_window_groups - 1] = 1;
1369 }
1370 }
1371 1292 ics->num_windows = 8;
1372
2/2
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 1292 if (m4ac->frame_length_short) {
1373 1 ics->swb_offset = ff_swb_offset_120[sampling_index];
1374 1 ics->num_swb = ff_aac_num_swb_120[sampling_index];
1375 } else {
1376 1291 ics->swb_offset = ff_swb_offset_128[sampling_index];
1377 1291 ics->num_swb = ff_aac_num_swb_128[sampling_index];
1378 }
1379 1292 ics->tns_max_bands = ff_tns_max_bands_128[sampling_index];
1380 1292 ics->predictor_present = 0;
1381 } else {
1382 61594 ics->max_sfb = get_bits(gb, 6);
1383 61594 ics->num_windows = 1;
1384
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✓ Branch 3 taken 42805 times.
 61594 if (aot == AOT_ER_AAC_LD || aot == AOT_ER_AAC_ELD) {
1385
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 18789 if (m4ac->frame_length_short) {
1386 3559 ics->swb_offset = ff_swb_offset_480[sampling_index];
1387 3559 ics->num_swb = ff_aac_num_swb_480[sampling_index];
1388 3559 ics->tns_max_bands = ff_tns_max_bands_480[sampling_index];
1389 } else {
1390 15230 ics->swb_offset = ff_swb_offset_512[sampling_index];
1391 15230 ics->num_swb = ff_aac_num_swb_512[sampling_index];
1392 15230 ics->tns_max_bands = ff_tns_max_bands_512[sampling_index];
1393 }
1394
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 18789 if (!ics->num_swb || !ics->swb_offset) {
1395 ✗ ret_fail = AVERROR_BUG;
1396 ✗ goto fail;
1397 }
1398 } else {
1399
2/2
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 42805 if (m4ac->frame_length_short) {
1400 386 ics->num_swb = ff_aac_num_swb_960[sampling_index];
1401 386 ics->swb_offset = ff_swb_offset_960[sampling_index];
1402 } else {
1403 42419 ics->num_swb = ff_aac_num_swb_1024[sampling_index];
1404 42419 ics->swb_offset = ff_swb_offset_1024[sampling_index];
1405 }
1406 42805 ics->tns_max_bands = ff_tns_max_bands_1024[sampling_index];
1407 }
1408
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 61594 if (aot != AOT_ER_AAC_ELD) {
1409 45229 ics->predictor_present = get_bits1(gb);
1410 45229 ics->predictor_reset_group = 0;
1411 }
1412
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 61594 if (ics->predictor_present) {
1413
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✓ Branch 1 taken 538 times.
 1811 if (aot == AOT_AAC_MAIN) {
1414
1/2
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 1273 if (decode_prediction(ac, ics, gb)) {
1415 ✗ goto fail;
1416 }
1417
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✓ Branch 3 taken 538 times.
 538 } else if (aot == AOT_AAC_LC ||
1418 aot == AOT_ER_AAC_LC) {
1419 ✗ av_log(ac->avctx, AV_LOG_ERROR,
1420 "Prediction is not allowed in AAC-LC.\n");
1421 ✗ goto fail;
1422 } else {
1423
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✓ Branch 1 taken 538 times.
 538 if (aot == AOT_ER_AAC_LD) {
1424 ✗ av_log(ac->avctx, AV_LOG_ERROR,
1425 "LTP in ER AAC LD not yet implemented.\n");
1426 ✗ ret_fail = AVERROR_PATCHWELCOME;
1427 ✗ goto fail;
1428 }
1429
2/2
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✓ Branch 2 taken 156 times.
 538 if ((ics->ltp.present = get_bits(gb, 1)))
1430 382 decode_ltp(ac, &ics->ltp, gb, ics->max_sfb);
1431 }
1432 }
1433 }
1434
1435
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 62886 if (ics->max_sfb > ics->num_swb) {
1436 ✗ av_log(ac->avctx, AV_LOG_ERROR,
1437 "Number of scalefactor bands in group (%d) "
1438 "exceeds limit (%d).\n",
1439 ✗ ics->max_sfb, ics->num_swb);
1440 ✗ goto fail;
1441 }
1442
1443 62886 return 0;
1444 ✗ fail:
1445 ✗ ics->max_sfb = 0;
1446 ✗ return ret_fail;
1447 }
1448
1449 /**
1450 * Decode band types (section_data payload); reference: table 4.46.
1451 *
1452 * @param band_type array of the used band type
1453 * @param band_type_run_end array of the last scalefactor band of a band type run
1454 *
1455 * @return Returns error status. 0 - OK, !0 - error
1456 */
1457 93155 static int decode_band_types(AACDecContext *ac, SingleChannelElement *sce,
1458 GetBitContext *gb)
1459 {
1460 93155 IndividualChannelStream *ics = &sce->ics;
1461
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 93155 const int bits = (ics->window_sequence[0] == EIGHT_SHORT_SEQUENCE) ? 3 : 5;
1462
1463
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 191407 for (int g = 0; g < ics->num_window_groups; g++) {
1464 98252 int k = 0;
1465
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 557127 while (k < ics->max_sfb) {
1466 458875 uint8_t sect_end = k;
1467 int sect_len_incr;
1468 458875 int sect_band_type = get_bits(gb, 4);
1469
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 458875 if (sect_band_type == 12) {
1470 ✗ av_log(ac->avctx, AV_LOG_ERROR, "invalid band type\n");
1471 ✗ return AVERROR_INVALIDDATA;
1472 }
1473 do {
1474 477423 sect_len_incr = get_bits(gb, bits);
1475 477423 sect_end += sect_len_incr;
1476
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 477423 if (get_bits_left(gb) < 0) {
1477 ✗ av_log(ac->avctx, AV_LOG_ERROR, "decode_band_types: "overread_err);
1478 ✗ return AVERROR_INVALIDDATA;
1479 }
1480
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 477423 if (sect_end > ics->max_sfb) {
1481 ✗ av_log(ac->avctx, AV_LOG_ERROR,
1482 "Number of bands (%d) exceeds limit (%d).\n",
1483 ✗ sect_end, ics->max_sfb);
1484 ✗ return AVERROR_INVALIDDATA;
1485 }
1486
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 477423 } while (sect_len_incr == (1 << bits) - 1);
1487
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 3897104 for (; k < sect_end; k++)
1488 3438229 sce->band_type[g*ics->max_sfb + k] = sect_band_type;
1489 }
1490 }
1491 93155 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 93155 static int decode_scalefactors(AACDecContext *ac, SingleChannelElement *sce,
1505 GetBitContext *gb, unsigned int global_gain)
1506 {
1507 93155 IndividualChannelStream *ics = &sce->ics;
1508 93155 int offset[3] = { global_gain, global_gain - NOISE_OFFSET, 0 };
1509 int clipped_offset;
1510 93155 int noise_flag = 1;
1511
1512
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 191407 for (int g = 0; g < ics->num_window_groups; g++) {
1513
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 3536481 for (int sfb = 0; sfb < ics->max_sfb; sfb++) {
1514
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✓ Branch 2 taken 281913 times.
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 3438229 switch (sce->band_type[g*ics->max_sfb + sfb]) {
1515 535711 case ZERO_BT:
1516 535711 sce->sfo[g*ics->max_sfb + sfb] = 0;
1517 535711 break;
1518 66328 case INTENSITY_BT: /* fallthrough */
1519 case INTENSITY_BT2:
1520 66328 offset[2] += get_vlc2(gb, ff_vlc_scalefactors, 7, 3) - SCALE_DIFF_ZERO;
1521 66328 clipped_offset = av_clip(offset[2], -155, 100);
1522
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 66328 if (offset[2] != clipped_offset) {
1523 ✗ avpriv_request_sample(ac->avctx,
1524 "If you heard an audible artifact, there may be a bug in the decoder. "
1525 "Clipped intensity stereo position (%d -> %d)",
1526 offset[2], clipped_offset);
1527 }
1528 66328 sce->sfo[g*ics->max_sfb + sfb] = clipped_offset - 100;
1529 66328 break;
1530 281913 case NOISE_BT:
1531
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✓ Branch 1 taken 275157 times.
 281913 if (noise_flag-- > 0)
1532 6756 offset[1] += get_bits(gb, NOISE_PRE_BITS) - NOISE_PRE;
1533 else
1534 275157 offset[1] += get_vlc2(gb, ff_vlc_scalefactors, 7, 3) - SCALE_DIFF_ZERO;
1535 281913 clipped_offset = av_clip(offset[1], -100, 155);
1536
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 281913 if (offset[1] != clipped_offset) {
1537 ✗ avpriv_request_sample(ac->avctx,
1538 "If you heard an audible artifact, there may be a bug in the decoder. "
1539 "Clipped noise gain (%d -> %d)",
1540 offset[1], clipped_offset);
1541 }
1542 281913 sce->sfo[g*ics->max_sfb + sfb] = clipped_offset;
1543 281913 break;
1544 2554277 default:
1545 2554277 offset[0] += get_vlc2(gb, ff_vlc_scalefactors, 7, 3) - SCALE_DIFF_ZERO;
1546
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 2554277 if (offset[0] > 255U) {
1547 ✗ av_log(ac->avctx, AV_LOG_ERROR,
1548 "Scalefactor (%d) out of range.\n", offset[0]);
1549 ✗ return AVERROR_INVALIDDATA;
1550 }
1551 2554277 sce->sfo[g*ics->max_sfb + sfb] = offset[0] - 100;
1552 2554277 break;
1553 }
1554 }
1555 }
1556
1557 93155 return 0;
1558 }
1559
1560 /**
1561 * Decode pulse data; reference: table 4.7.
1562 */
1563 1098 static int decode_pulses(Pulse *pulse, GetBitContext *gb,
1564 const uint16_t *swb_offset, int num_swb)
1565 {
1566 int i, pulse_swb;
1567 1098 pulse->num_pulse = get_bits(gb, 2) + 1;
1568 1098 pulse_swb = get_bits(gb, 6);
1569
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 1098 if (pulse_swb >= num_swb)
1570 ✗ return -1;
1571 1098 pulse->pos[0] = swb_offset[pulse_swb];
1572 1098 pulse->pos[0] += get_bits(gb, 5);
1573
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✓ Branch 1 taken 1098 times.
 1098 if (pulse->pos[0] >= swb_offset[num_swb])
1574 ✗ return -1;
1575 1098 pulse->amp[0] = get_bits(gb, 4);
1576
2/2
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 2744 for (i = 1; i < pulse->num_pulse; i++) {
1577 1646 pulse->pos[i] = get_bits(gb, 5) + pulse->pos[i - 1];
1578
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 1646 if (pulse->pos[i] >= swb_offset[num_swb])
1579 ✗ return -1;
1580 1646 pulse->amp[i] = get_bits(gb, 4);
1581 }
1582 1098 return 0;
1583 }
1584
1585 /**
1586 * Decode Temporal Noise Shaping data; reference: table 4.48.
1587 *
1588 * @return Returns error status. 0 - OK, !0 - error
1589 */
1590 6953 int ff_aac_decode_tns(AACDecContext *ac, TemporalNoiseShaping *tns,
1591 GetBitContext *gb, const IndividualChannelStream *ics)
1592 {
1593 6953 int tns_max_order = INT32_MAX;
1594 6953 const int is_usac = ac->oc[1].m4ac.object_type == AOT_USAC;
1595 int w, filt, i, coef_len, coef_res, coef_compress;
1596 6953 const int is8 = ics->window_sequence[0] == EIGHT_SHORT_SEQUENCE;
1597
1598 /* USAC doesn't seem to have a limit */
1599
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 6953 if (!is_usac)
1600
4/4
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✓ Branch 2 taken 163 times.
✓ Branch 3 taken 6133 times.
 6953 tns_max_order = is8 ? 7 : ac->oc[1].m4ac.object_type == AOT_AAC_MAIN ? 20 : 12;
1601
1602
2/2
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 18505 for (w = 0; w < ics->num_windows; w++) {
1603
2/2
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✓ Branch 2 taken 3612 times.
 11552 if ((tns->n_filt[w] = get_bits(gb, 2 - is8))) {
1604 7940 coef_res = get_bits1(gb);
1605
1606
2/2
✓ Branch 0 taken 9401 times.
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 17341 for (filt = 0; filt < tns->n_filt[w]; filt++) {
1607 int tmp2_idx;
1608 9401 tns->length[w][filt] = get_bits(gb, 6 - 2 * is8);
1609
1610
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✓ Branch 1 taken 9401 times.
 9401 if (is_usac)
1611 ✗ tns->order[w][filt] = get_bits(gb, 4 - is8);
1612 else
1613 9401 tns->order[w][filt] = get_bits(gb, 5 - (2 * is8));
1614
1615
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✓ Branch 1 taken 9401 times.
 9401 if (tns->order[w][filt] > tns_max_order) {
1616 ✗ av_log(ac->avctx, AV_LOG_ERROR,
1617 "TNS filter order %d is greater than maximum %d.\n",
1618 tns->order[w][filt], tns_max_order);
1619 ✗ tns->order[w][filt] = 0;
1620 ✗ return AVERROR_INVALIDDATA;
1621 }
1622
2/2
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 9401 if (tns->order[w][filt]) {
1623 8881 tns->direction[w][filt] = get_bits1(gb);
1624 8881 coef_compress = get_bits1(gb);
1625 8881 coef_len = coef_res + 3 - coef_compress;
1626 8881 tmp2_idx = 2 * coef_compress + coef_res;
1627
1628
2/2
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✓ Branch 1 taken 8881 times.
 67387 for (i = 0; i < tns->order[w][filt]; i++) {
1629
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✓ Branch 1 taken 44393 times.
 58506 if (CONFIG_AAC_FIXED_DECODER && ac->is_fixed)
1630 14113 tns->coef_fixed[w][filt][i] = Q31(ff_tns_tmp2_map[tmp2_idx][get_bits(gb, coef_len)]);
1631 else if (CONFIG_AAC_DECODER)
1632 44393 tns->coef[w][filt][i] = ff_tns_tmp2_map[tmp2_idx][get_bits(gb, coef_len)];
1633 }
1634 }
1635 }
1636 }
1637 }
1638 6953 return 0;
1639 }
1640
1641 /**
1642 * Decode Mid/Side data; reference: table 4.54.
1643 *
1644 * @param ms_present Indicates mid/side stereo presence. [0] mask is all 0s;
1645 * [1] mask is decoded from bitstream; [2] mask is all 1s;
1646 * [3] reserved for scalable AAC
1647 */
1648 27065 static void decode_mid_side_stereo(ChannelElement *cpe, GetBitContext *gb,
1649 int ms_present)
1650 {
1651 int idx;
1652 27065 int max_idx = cpe->ch[0].ics.num_window_groups * cpe->ch[0].ics.max_sfb;
1653 27065 cpe->max_sfb_ste = cpe->ch[0].ics.max_sfb;
1654
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 27065 if (ms_present == 1) {
1655
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 510801 for (idx = 0; idx < max_idx; idx++)
1656 498109 cpe->ms_mask[idx] = get_bits1(gb);
1657
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✗ Branch 1 not taken.
 14373 } else if (ms_present == 2) {
1658 14373 memset(cpe->ms_mask, 1, max_idx * sizeof(cpe->ms_mask[0]));
1659 }
1660 27065 }
1661
1662 ✗ static void decode_gain_control(SingleChannelElement * sce, GetBitContext * gb)
1663 {
1664 // wd_num, wd_test, aloc_size
1665 static const uint8_t gain_mode[4][3] = {
1666 {1, 0, 5}, // ONLY_LONG_SEQUENCE = 0,
1667 {2, 1, 2}, // LONG_START_SEQUENCE,
1668 {8, 0, 2}, // EIGHT_SHORT_SEQUENCE,
1669 {2, 1, 5}, // LONG_STOP_SEQUENCE
1670 };
1671
1672 ✗ const int mode = sce->ics.window_sequence[0];
1673 uint8_t bd, wd, ad;
1674
1675 // FIXME: Store the gain control data on |sce| and do something with it.
1676 ✗ uint8_t max_band = get_bits(gb, 2);
1677 ✗ for (bd = 0; bd < max_band; bd++) {
1678 ✗ for (wd = 0; wd < gain_mode[mode][0]; wd++) {
1679 ✗ uint8_t adjust_num = get_bits(gb, 3);
1680 ✗ for (ad = 0; ad < adjust_num; ad++) {
1681 ✗ skip_bits(gb, 4 + ((wd == 0 && gain_mode[mode][1])
1682 ? 4
1683 ✗ : gain_mode[mode][2]));
1684 }
1685 }
1686 }
1687 ✗ }
1688
1689 /**
1690 * Decode an individual_channel_stream payload; reference: table 4.44.
1691 *
1692 * @param common_window Channels have independent [0], or shared [1], Individual Channel Stream information.
1693 * @param scale_flag scalable [1] or non-scalable [0] AAC (Unused until scalable AAC is implemented.)
1694 *
1695 * @return Returns error status. 0 - OK, !0 - error
1696 */
1697 93155 int ff_aac_decode_ics(AACDecContext *ac, SingleChannelElement *sce,
1698 GetBitContext *gb, int common_window, int scale_flag)
1699 {
1700 Pulse pulse;
1701 93155 TemporalNoiseShaping *tns = &sce->tns;
1702 93155 IndividualChannelStream *ics = &sce->ics;
1703 93155 int global_gain, eld_syntax, er_syntax, pulse_present = 0;
1704 int ret;
1705
1706 93155 eld_syntax = ac->oc[1].m4ac.object_type == AOT_ER_AAC_ELD;
1707 279465 er_syntax = ac->oc[1].m4ac.object_type == AOT_ER_AAC_LC ||
1708
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 93155 ac->oc[1].m4ac.object_type == AOT_ER_AAC_LTP ||
1709
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 275829 ac->oc[1].m4ac.object_type == AOT_ER_AAC_LD ||
1710
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 89519 ac->oc[1].m4ac.object_type == AOT_ER_AAC_ELD;
1711
1712 /* This assignment is to silence a GCC warning about the variable being used
1713 * uninitialized when in fact it always is.
1714 */
1715 93155 pulse.num_pulse = 0;
1716
1717 93155 global_gain = get_bits(gb, 8);
1718
1719
3/4
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✓ Branch 1 taken 60538 times.
✓ Branch 2 taken 32617 times.
✗ Branch 3 not taken.
 93155 if (!common_window && !scale_flag) {
1720 32617 ret = decode_ics_info(ac, ics, gb);
1721
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 32617 times.
 32617 if (ret < 0)
1722 ✗ goto fail;
1723 }
1724
1725
1/2
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✓ Branch 2 taken 93155 times.
 93155 if ((ret = decode_band_types(ac, sce, gb)) < 0)
1726 ✗ goto fail;
1727
1/2
✗ Branch 1 not taken.
✓ Branch 2 taken 93155 times.
 93155 if ((ret = decode_scalefactors(ac, sce, gb, global_gain)) < 0)
1728 ✗ goto fail;
1729
1730 93155 ac->dsp.dequant_scalefactors(sce);
1731
1732 93155 pulse_present = 0;
1733
1/2
✓ Branch 0 taken 93155 times.
✗ Branch 1 not taken.
 93155 if (!scale_flag) {
1734
4/4
✓ Branch 0 taken 66557 times.
✓ Branch 1 taken 26598 times.
✓ Branch 3 taken 1098 times.
✓ Branch 4 taken 65459 times.
 93155 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 93155 tns->present = get_bits1(gb);
1749
4/4
✓ Branch 0 taken 6953 times.
✓ Branch 1 taken 86202 times.
✓ Branch 2 taken 5689 times.
✓ Branch 3 taken 1264 times.
 93155 if (tns->present && !er_syntax) {
1750 5689 ret = ff_aac_decode_tns(ac, tns, gb, ics);
1751
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 5689 times.
 5689 if (ret < 0)
1752 ✗ goto fail;
1753 }
1754
3/4
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✓ Branch 1 taken 26598 times.
✗ Branch 3 not taken.
✓ Branch 4 taken 66557 times.
 93155 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 implementations do
1763
4/4
✓ Branch 0 taken 6953 times.
✓ Branch 1 taken 86202 times.
✓ Branch 2 taken 1264 times.
✓ Branch 3 taken 5689 times.
 93155 if (tns->present && er_syntax) {
1764 1264 ret = ff_aac_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 92057 times.
 93155 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 93155 times.
 93155 if (ret < 0)
1774 ✗ goto fail;
1775
1776
4/4
✓ Branch 0 taken 6564 times.
✓ Branch 1 taken 86591 times.
✓ Branch 2 taken 6040 times.
✓ Branch 3 taken 524 times.
 93155 if (ac->oc[1].m4ac.object_type == AOT_AAC_MAIN && !common_window)
1777 6040 ac->dsp.apply_prediction(ac, sce);
1778
1779 93155 return 0;
1780 ✗ fail:
1781 ✗ memset(sce->sfo, 0, sizeof(sce->sfo));
1782 ✗ tns->present = 0;
1783 ✗ return ret;
1784 }
1785
1786 /**
1787 * Decode a channel_pair_element; reference: table 4.4.
1788 *
1789 * @return Returns error status. 0 - OK, !0 - error
1790 */
1791 30388 static int decode_cpe(AACDecContext *ac, GetBitContext *gb, ChannelElement *cpe)
1792 {
1793 30388 int i, ret, common_window, ms_present = 0;
1794 30388 int eld_syntax = ac->oc[1].m4ac.object_type == AOT_ER_AAC_ELD;
1795
1796
4/4
✓ Branch 0 taken 20155 times.
✓ Branch 1 taken 10233 times.
✓ Branch 3 taken 20036 times.
✓ Branch 4 taken 119 times.
 30388 common_window = eld_syntax || get_bits1(gb);
1797
2/2
✓ Branch 0 taken 30269 times.
✓ Branch 1 taken 119 times.
 30388 if (common_window) {
1798
1/2
✗ Branch 1 not taken.
✓ Branch 2 taken 30269 times.
 30269 if (decode_ics_info(ac, &cpe->ch[0].ics, gb))
1799 ✗ return AVERROR_INVALIDDATA;
1800 30269 i = cpe->ch[1].ics.use_kb_window[0];
1801 30269 cpe->ch[1].ics = cpe->ch[0].ics;
1802 30269 cpe->ch[1].ics.use_kb_window[1] = i;
1803
2/2
✓ Branch 0 taken 593 times.
✓ Branch 1 taken 29676 times.
 30269 if (cpe->ch[1].ics.predictor_present &&
1804
2/2
✓ Branch 0 taken 538 times.
✓ Branch 1 taken 55 times.
 593 (ac->oc[1].m4ac.object_type != AOT_AAC_MAIN))
1805
2/2
✓ Branch 1 taken 404 times.
✓ Branch 2 taken 134 times.
 538 if ((cpe->ch[1].ics.ltp.present = get_bits(gb, 1)))
1806 404 decode_ltp(ac, &cpe->ch[1].ics.ltp, gb, cpe->ch[1].ics.max_sfb);
1807 30269 ms_present = get_bits(gb, 2);
1808
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 30269 times.
 30269 if (ms_present == 3) {
1809 ✗ av_log(ac->avctx, AV_LOG_ERROR, "ms_present = 3 is reserved.\n");
1810 ✗ return AVERROR_INVALIDDATA;
1811
2/2
✓ Branch 0 taken 27065 times.
✓ Branch 1 taken 3204 times.
 30269 } else if (ms_present)
1812 27065 decode_mid_side_stereo(cpe, gb, ms_present);
1813 }
1814
1/2
✗ Branch 1 not taken.
✓ Branch 2 taken 30388 times.
 30388 if ((ret = ff_aac_decode_ics(ac, &cpe->ch[0], gb, common_window, 0)))
1815 ✗ return ret;
1816
1/2
✗ Branch 1 not taken.
✓ Branch 2 taken 30388 times.
 30388 if ((ret = ff_aac_decode_ics(ac, &cpe->ch[1], gb, common_window, 0)))
1817 ✗ return ret;
1818
1819
2/2
✓ Branch 0 taken 30269 times.
✓ Branch 1 taken 119 times.
 30388 if (common_window) {
1820
2/2
✓ Branch 0 taken 27065 times.
✓ Branch 1 taken 3204 times.
 30269 if (ms_present)
1821 27065 ac->dsp.apply_mid_side_stereo(ac, cpe);
1822
2/2
✓ Branch 0 taken 262 times.
✓ Branch 1 taken 30007 times.
 30269 if (ac->oc[1].m4ac.object_type == AOT_AAC_MAIN) {
1823 262 ac->dsp.apply_prediction(ac, &cpe->ch[0]);
1824 262 ac->dsp.apply_prediction(ac, &cpe->ch[1]);
1825 }
1826 }
1827
1828 30388 ac->dsp.apply_intensity_stereo(ac, cpe, ms_present);
1829 30388 return 0;
1830 }
1831
1832 /**
1833 * Parse whether channels are to be excluded from Dynamic Range Compression; reference: table 4.53.
1834 *
1835 * @return Returns number of bytes consumed.
1836 */
1837 4 static int decode_drc_channel_exclusions(DynamicRangeControl *che_drc,
1838 GetBitContext *gb)
1839 {
1840 int i;
1841 4 int num_excl_chan = 0;
1842
1843 do {
1844
2/2
✓ Branch 0 taken 28 times.
✓ Branch 1 taken 4 times.
 32 for (i = 0; i < 7; i++)
1845 28 che_drc->exclude_mask[num_excl_chan++] = get_bits1(gb);
1846
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));
1847
1848 4 return num_excl_chan / 7;
1849 }
1850
1851 /**
1852 * Decode dynamic range information; reference: table 4.52.
1853 *
1854 * @return Returns number of bytes consumed.
1855 */
1856 880 static int decode_dynamic_range(DynamicRangeControl *che_drc,
1857 GetBitContext *gb)
1858 {
1859 880 int n = 1;
1860 880 int drc_num_bands = 1;
1861 int i;
1862
1863 /* pce_tag_present? */
1864
1/2
✗ Branch 1 not taken.
✓ Branch 2 taken 880 times.
 880 if (get_bits1(gb)) {
1865 ✗ che_drc->pce_instance_tag = get_bits(gb, 4);
1866 ✗ skip_bits(gb, 4); // tag_reserved_bits
1867 ✗ n++;
1868 }
1869
1870 /* excluded_chns_present? */
1871
2/2
✓ Branch 1 taken 4 times.
✓ Branch 2 taken 876 times.
 880 if (get_bits1(gb)) {
1872 4 n += decode_drc_channel_exclusions(che_drc, gb);
1873 }
1874
1875 /* drc_bands_present? */
1876
2/2
✓ Branch 1 taken 35 times.
✓ Branch 2 taken 845 times.
 880 if (get_bits1(gb)) {
1877 35 che_drc->band_incr = get_bits(gb, 4);
1878 35 che_drc->interpolation_scheme = get_bits(gb, 4);
1879 35 n++;
1880 35 drc_num_bands += che_drc->band_incr;
1881
2/2
✓ Branch 0 taken 105 times.
✓ Branch 1 taken 35 times.
 140 for (i = 0; i < drc_num_bands; i++) {
1882 105 che_drc->band_top[i] = get_bits(gb, 8);
1883 105 n++;
1884 }
1885 }
1886
1887 /* prog_ref_level_present? */
1888
2/2
✓ Branch 1 taken 878 times.
✓ Branch 2 taken 2 times.
 880 if (get_bits1(gb)) {
1889 878 che_drc->prog_ref_level = get_bits(gb, 7);
1890 878 skip_bits1(gb); // prog_ref_level_reserved_bits
1891 878 n++;
1892 }
1893
1894
2/2
✓ Branch 0 taken 950 times.
✓ Branch 1 taken 880 times.
 1830 for (i = 0; i < drc_num_bands; i++) {
1895 950 che_drc->dyn_rng_sgn[i] = get_bits1(gb);
1896 950 che_drc->dyn_rng_ctl[i] = get_bits(gb, 7);
1897 950 n++;
1898 }
1899
1900 880 return n;
1901 }
1902
1903 8961 static int decode_fill(AACDecContext *ac, GetBitContext *gb, int len) {
1904 uint8_t buf[256];
1905 int i, major, minor;
1906
1907
2/2
✓ Branch 0 taken 380 times.
✓ Branch 1 taken 8581 times.
 8961 if (len < 13+7*8)
1908 380 goto unknown;
1909
1910 8581 get_bits(gb, 13); len -= 13;
1911
1912
4/4
✓ Branch 0 taken 1137246 times.
✓ Branch 1 taken 444 times.
✓ Branch 2 taken 1129109 times.
✓ Branch 3 taken 8137 times.
 1137690 for(i=0; i+1<sizeof(buf) && len>=8; i++, len-=8)
1913 1129109 buf[i] = get_bits(gb, 8);
1914
1915 8581 buf[i] = 0;
1916
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 8581 times.
 8581 if (ac->avctx->debug & FF_DEBUG_PICT_INFO)
1917 ✗ av_log(ac->avctx, AV_LOG_DEBUG, "FILL:%s\n", buf);
1918
1919
2/2
✓ Branch 0 taken 8562 times.
✓ Branch 1 taken 19 times.
 8581 if (sscanf(buf, "libfaac %d.%d", &major, &minor) == 2){
1920 19 ac->avctx->internal->skip_samples = 1024;
1921 }
1922
1923 8562 unknown:
1924 8961 skip_bits_long(gb, len);
1925
1926 8961 return 0;
1927 }
1928
1929 /**
1930 * Decode extension data (incomplete); reference: table 4.51.
1931 *
1932 * @param cnt length of TYPE_FIL syntactic element in bytes
1933 *
1934 * @return Returns number of bytes consumed
1935 */
1936 23696 static int decode_extension_payload(AACDecContext *ac, GetBitContext *gb, int cnt,
1937 ChannelElement *che, enum RawDataBlockType elem_type)
1938 {
1939 23696 int crc_flag = 0;
1940 23696 int res = cnt;
1941 23696 int type = get_bits(gb, 4);
1942
1943
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 23696 times.
 23696 if (ac->avctx->debug & FF_DEBUG_STARTCODE)
1944 ✗ av_log(ac->avctx, AV_LOG_DEBUG, "extension type: %d len:%d\n", type, cnt);
1945
1946
4/5
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✓ Branch 1 taken 10901 times.
✓ Branch 2 taken 880 times.
✓ Branch 3 taken 8961 times.
✓ Branch 4 taken 2954 times.
 23696 switch (type) { // extension type
1947 ✗ case EXT_SBR_DATA_CRC:
1948 ✗ crc_flag++;
1949 10901 case EXT_SBR_DATA:
1950
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 10901 times.
 10901 if (!che) {
1951 ✗ av_log(ac->avctx, AV_LOG_ERROR, "SBR was found before the first channel element.\n");
1952 ✗ return res;
1953
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 10901 times.
 10901 } else if (ac->oc[1].m4ac.frame_length_short) {
1954 ✗ if (!ac->warned_960_sbr)
1955 ✗ avpriv_report_missing_feature(ac->avctx,
1956 "SBR with 960 frame length");
1957 ✗ ac->warned_960_sbr = 1;
1958 ✗ skip_bits_long(gb, 8 * cnt - 4);
1959 ✗ return res;
1960
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 10901 times.
 10901 } else if (!ac->oc[1].m4ac.sbr) {
1961 ✗ av_log(ac->avctx, AV_LOG_ERROR, "SBR signaled to be not-present but was found in the bitstream.\n");
1962 ✗ skip_bits_long(gb, 8 * cnt - 4);
1963 ✗ return res;
1964
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) {
1965 ✗ av_log(ac->avctx, AV_LOG_ERROR, "Implicit SBR was found with a first occurrence after the first frame.\n");
1966 ✗ skip_bits_long(gb, 8 * cnt - 4);
1967 ✗ return res;
1968
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 &&
1969
2/2
✓ Branch 0 taken 12 times.
✓ Branch 1 taken 82 times.
 94 ac->avctx->ch_layout.nb_channels == 1) {
1970 12 ac->oc[1].m4ac.sbr = 1;
1971 12 ac->oc[1].m4ac.ps = 1;
1972 12 ac->avctx->profile = AV_PROFILE_AAC_HE_V2;
1973 12 ff_aac_output_configure(ac, ac->oc[1].layout_map, ac->oc[1].layout_map_tags,
1974 ac->oc[1].status, 1);
1975 } else {
1976 10889 ac->oc[1].m4ac.sbr = 1;
1977 10889 ac->avctx->profile = AV_PROFILE_AAC_HE;
1978 }
1979
1980 10901 ac->proc.sbr_decode_extension(ac, che, gb, crc_flag, cnt, elem_type);
1981
1982
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) {
1983 22 av_log(ac->avctx, AV_LOG_VERBOSE, "Treating HE-AAC mono as stereo.\n");
1984 22 ac->warned_he_aac_mono = 1;
1985 }
1986 10901 break;
1987 880 case EXT_DYNAMIC_RANGE:
1988 880 res = decode_dynamic_range(&ac->che_drc, gb);
1989 880 break;
1990 8961 case EXT_FILL:
1991 8961 decode_fill(ac, gb, 8 * cnt - 4);
1992 8961 break;
1993 2954 case EXT_FILL_DATA:
1994 case EXT_DATA_ELEMENT:
1995 default:
1996 2954 skip_bits_long(gb, 8 * cnt - 4);
1997 2954 break;
1998 };
1999 23696 return res;
2000 }
2001
2002 /**
2003 * channel coupling transformation interface
2004 *
2005 * @param apply_coupling_method pointer to (in)dependent coupling function
2006 */
2007 175441 static void apply_channel_coupling(AACDecContext *ac, ChannelElement *cc,
2008 enum RawDataBlockType type, int elem_id,
2009 enum CouplingPoint coupling_point,
2010 void (*apply_coupling_method)(AACDecContext *ac, SingleChannelElement *target, ChannelElement *cce, int index))
2011 {
2012 int i, c;
2013
2014
2/2
✓ Branch 0 taken 11228224 times.
✓ Branch 1 taken 175441 times.
 11403665 for (i = 0; i < MAX_ELEM_ID; i++) {
2015 11228224 ChannelElement *cce = ac->che[TYPE_CCE][i];
2016 11228224 int index = 0;
2017
2018
4/4
✓ Branch 0 taken 11740 times.
✓ Branch 1 taken 11216484 times.
✓ Branch 2 taken 3915 times.
✓ Branch 3 taken 7825 times.
 11228224 if (cce && cce->coup.coupling_point == coupling_point) {
2019 3915 ChannelCoupling *coup = &cce->coup;
2020
2021
2/2
✓ Branch 0 taken 9402 times.
✓ Branch 1 taken 3915 times.
 13317 for (c = 0; c <= coup->num_coupled; c++) {
2022
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) {
2023
2/2
✓ Branch 0 taken 2561 times.
✓ Branch 1 taken 180 times.
 2741 if (coup->ch_select[c] != 1) {
2024 2561 apply_coupling_method(ac, &cc->ch[0], cce, index);
2025
1/2
✓ Branch 0 taken 2561 times.
✗ Branch 1 not taken.
 2561 if (coup->ch_select[c] != 0)
2026 2561 index++;
2027 }
2028
2/2
✓ Branch 0 taken 2147 times.
✓ Branch 1 taken 594 times.
 2741 if (coup->ch_select[c] != 2)
2029 2147 apply_coupling_method(ac, &cc->ch[1], cce, index++);
2030 } else
2031
2/2
✓ Branch 0 taken 4720 times.
✓ Branch 1 taken 1941 times.
 6661 index += 1 + (coup->ch_select[c] == 3);
2032 }
2033 }
2034 }
2035 175441 }
2036
2037 /**
2038 * Convert spectral data to samples, applying all supported tools as appropriate.
2039 */
2040 49701 static void spectral_to_sample(AACDecContext *ac, int samples)
2041 {
2042 int i, type;
2043 void (*imdct_and_window)(AACDecContext *ac, SingleChannelElement *sce);
2044
3/3
✓ Branch 0 taken 606 times.
✓ Branch 1 taken 16365 times.
✓ Branch 2 taken 32730 times.
 49701 switch (ac->oc[1].m4ac.object_type) {
2045 606 case AOT_ER_AAC_LD:
2046 606 imdct_and_window = ac->dsp.imdct_and_windowing_ld;
2047 606 break;
2048 16365 case AOT_ER_AAC_ELD:
2049 16365 imdct_and_window = ac->dsp.imdct_and_windowing_eld;
2050 16365 break;
2051 32730 default:
2052
2/2
✓ Branch 0 taken 387 times.
✓ Branch 1 taken 32343 times.
 32730 if (ac->oc[1].m4ac.frame_length_short)
2053 387 imdct_and_window = ac->dsp.imdct_and_windowing_960;
2054 else
2055 32343 imdct_and_window = ac->dsp.imdct_and_windowing;
2056 }
2057
2/2
✓ Branch 0 taken 198804 times.
✓ Branch 1 taken 49701 times.
 248505 for (type = 3; type >= 0; type--) {
2058
2/2
✓ Branch 0 taken 12723456 times.
✓ Branch 1 taken 198804 times.
 12922260 for (i = 0; i < MAX_ELEM_ID; i++) {
2059 12723456 ChannelElement *che = ac->che[type][i];
2060
4/4
✓ Branch 0 taken 63096 times.
✓ Branch 1 taken 12660360 times.
✓ Branch 2 taken 62767 times.
✓ Branch 3 taken 329 times.
 12723456 if (che && che->present) {
2061
2/2
✓ Branch 0 taken 58089 times.
✓ Branch 1 taken 4678 times.
 62767 if (type <= TYPE_CPE)
2062 58089 apply_channel_coupling(ac, che, type, i, BEFORE_TNS, ac->dsp.apply_dependent_coupling);
2063
2/2
✓ Branch 0 taken 1784 times.
✓ Branch 1 taken 60983 times.
 62767 if (ac->oc[1].m4ac.object_type == AOT_AAC_LTP) {
2064
2/2
✓ Branch 0 taken 538 times.
✓ Branch 1 taken 1246 times.
 1784 if (che->ch[0].ics.predictor_present) {
2065
2/2
✓ Branch 0 taken 382 times.
✓ Branch 1 taken 156 times.
 538 if (che->ch[0].ics.ltp.present)
2066 382 ac->dsp.apply_ltp(ac, &che->ch[0]);
2067
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)
2068 404 ac->dsp.apply_ltp(ac, &che->ch[1]);
2069 }
2070 }
2071
2/2
✓ Branch 0 taken 4646 times.
✓ Branch 1 taken 58121 times.
 62767 if (che->ch[0].tns.present)
2072 4646 ac->dsp.apply_tns(che->ch[0].coeffs,
2073 &che->ch[0].tns, &che->ch[0].ics, 1);
2074
2/2
✓ Branch 0 taken 2307 times.
✓ Branch 1 taken 60460 times.
 62767 if (che->ch[1].tns.present)
2075 2307 ac->dsp.apply_tns(che->ch[1].coeffs,
2076 &che->ch[1].tns, &che->ch[1].ics, 1);
2077
2/2
✓ Branch 0 taken 58089 times.
✓ Branch 1 taken 4678 times.
 62767 if (type <= TYPE_CPE)
2078 58089 apply_channel_coupling(ac, che, type, i, BETWEEN_TNS_AND_IMDCT, ac->dsp.apply_dependent_coupling);
2079
4/4
✓ Branch 0 taken 1174 times.
✓ Branch 1 taken 61593 times.
✓ Branch 2 taken 393 times.
✓ Branch 3 taken 781 times.
 62767 if (type != TYPE_CCE || che->coup.coupling_point == AFTER_IMDCT) {
2080 61986 imdct_and_window(ac, &che->ch[0]);
2081
2/2
✓ Branch 0 taken 1784 times.
✓ Branch 1 taken 60202 times.
 61986 if (ac->oc[1].m4ac.object_type == AOT_AAC_LTP)
2082 1784 ac->dsp.update_ltp(ac, &che->ch[0]);
2083
2/2
✓ Branch 0 taken 30388 times.
✓ Branch 1 taken 31598 times.
 61986 if (type == TYPE_CPE) {
2084 30388 imdct_and_window(ac, &che->ch[1]);
2085
2/2
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✓ Branch 1 taken 28604 times.
 30388 if (ac->oc[1].m4ac.object_type == AOT_AAC_LTP)
2086 1784 ac->dsp.update_ltp(ac, &che->ch[1]);
2087 }
2088
2/2
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✓ Branch 1 taken 49575 times.
 61986 if (ac->oc[1].m4ac.sbr > 0) {
2089 12411 ac->proc.sbr_apply(ac, che, type,
2090 12411 che->ch[0].output,
2091 12411 che->ch[1].output);
2092 }
2093 }
2094
2/2
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✓ Branch 1 taken 3504 times.
 62767 if (type <= TYPE_CCE)
2095 59263 apply_channel_coupling(ac, che, type, i, AFTER_IMDCT, ac->dsp.apply_independent_coupling);
2096 62767 ac->dsp.clip_output(ac, che, type, samples);
2097 62767 che->present = 0;
2098
2/2
✓ Branch 0 taken 329 times.
✓ Branch 1 taken 12660360 times.
 12660689 } else if (che) {
2099 329 av_log(ac->avctx, AV_LOG_VERBOSE, "ChannelElement %d.%d missing \n", type, i);
2100 }
2101 }
2102 }
2103 49701 }
2104
2105 3702 static int parse_adts_frame_header(AACDecContext *ac, GetBitContext *gb)
2106 {
2107 int size;
2108 AACADTSHeaderInfo hdr_info;
2109 uint8_t layout_map[MAX_ELEM_ID*4][3];
2110 int layout_map_tags, ret;
2111
2112 3702 size = ff_adts_header_parse(gb, &hdr_info);
2113
1/2
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 3702 if (size > 0) {
2114
2/4
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 3702 if (!ac->warned_num_aac_frames && hdr_info.num_aac_frames != 1) {
2115 // This is 2 for "VLB " audio in NSV files.
2116 // See samples/nsv/vlb_audio.
2117 ✗ avpriv_report_missing_feature(ac->avctx,
2118 "More than one AAC RDB per ADTS frame");
2119 ✗ ac->warned_num_aac_frames = 1;
2120 }
2121 3702 push_output_configuration(ac);
2122
1/2
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✗ Branch 1 not taken.
 3702 if (hdr_info.chan_config) {
2123 3702 ac->oc[1].m4ac.chan_config = hdr_info.chan_config;
2124
1/2
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✓ Branch 1 taken 3702 times.
 3702 if ((ret = ff_aac_set_default_channel_config(ac, ac->avctx,
2125 layout_map,
2126 &layout_map_tags,
2127 3702 hdr_info.chan_config)) < 0)
2128 ✗ return ret;
2129
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 3702 times.
 3702 if ((ret = ff_aac_output_configure(ac, layout_map, layout_map_tags,
2130 3702 FFMAX(ac->oc[1].status,
2131 OC_TRIAL_FRAME), 0)) < 0)
2132 ✗ return ret;
2133 } else {
2134 ✗ ac->oc[1].m4ac.chan_config = 0;
2135 /**
2136 * dual mono frames in Japanese DTV can have chan_config 0
2137 * WITHOUT specifying PCE.
2138 * thus, set dual mono as default.
2139 */
2140 ✗ if (ac->dmono_mode && ac->oc[0].status == OC_NONE) {
2141 ✗ layout_map_tags = 2;
2142 ✗ layout_map[0][0] = layout_map[1][0] = TYPE_SCE;
2143 ✗ layout_map[0][2] = layout_map[1][2] = AAC_CHANNEL_FRONT;
2144 ✗ layout_map[0][1] = 0;
2145 ✗ layout_map[1][1] = 1;
2146 ✗ if (ff_aac_output_configure(ac, layout_map, layout_map_tags,
2147 OC_TRIAL_FRAME, 0))
2148 ✗ return -7;
2149 }
2150 }
2151 3702 ac->oc[1].m4ac.sample_rate = hdr_info.sample_rate;
2152 3702 ac->oc[1].m4ac.sampling_index = hdr_info.sampling_index;
2153 3702 ac->oc[1].m4ac.object_type = hdr_info.object_type;
2154 3702 ac->oc[1].m4ac.frame_length_short = 0;
2155
2/2
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✓ Branch 1 taken 54 times.
 3702 if (ac->oc[0].status != OC_LOCKED ||
2156
1/2
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✗ Branch 1 not taken.
 3648 ac->oc[0].m4ac.chan_config != hdr_info.chan_config ||
2157
1/2
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 3648 ac->oc[0].m4ac.sample_rate != hdr_info.sample_rate) {
2158 54 ac->oc[1].m4ac.sbr = -1;
2159 54 ac->oc[1].m4ac.ps = -1;
2160 }
2161
2/2
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✓ Branch 1 taken 3701 times.
 3702 if (!hdr_info.crc_absent)
2162 1 skip_bits(gb, 16);
2163 }
2164 3702 return size;
2165 }
2166
2167 16971 static int aac_decode_er_frame(AVCodecContext *avctx, AVFrame *frame,
2168 int *got_frame_ptr, GetBitContext *gb)
2169 {
2170 16971 AACDecContext *ac = avctx->priv_data;
2171 16971 const MPEG4AudioConfig *const m4ac = &ac->oc[1].m4ac;
2172 ChannelElement *che;
2173 int err, i;
2174
2/2
✓ Branch 0 taken 3559 times.
✓ Branch 1 taken 13412 times.
 16971 int samples = m4ac->frame_length_short ? 960 : 1024;
2175 16971 int chan_config = m4ac->chan_config;
2176 16971 int aot = m4ac->object_type;
2177
2178
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)
2179 16971 samples >>= 1;
2180
2181 16971 ac->frame = frame;
2182
2183
1/2
✗ Branch 1 not taken.
✓ Branch 2 taken 16971 times.
 16971 if ((err = frame_configure_elements(avctx)) < 0)
2184 ✗ return err;
2185
2186 // The AV_PROFILE_AAC_* defines are all object_type - 1
2187 // This may lead to an undefined profile being signaled
2188 16971 ac->avctx->profile = aot - 1;
2189
2190 16971 ac->tags_mapped = 0;
2191
2192
3/8
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 16971 if (chan_config < 0 || (chan_config >= 8 && chan_config < 11) || chan_config >= 13) {
2193 ✗ avpriv_request_sample(avctx, "Unknown ER channel configuration %d",
2194 chan_config);
2195 ✗ return AVERROR_INVALIDDATA;
2196 }
2197
2/2
✓ Branch 0 taken 18789 times.
✓ Branch 1 taken 16971 times.
 35760 for (i = 0; i < ff_tags_per_config[chan_config]; i++) {
2198 18789 const int elem_type = ff_aac_channel_layout_map[chan_config-1][i][0];
2199 18789 const int elem_id = ff_aac_channel_layout_map[chan_config-1][i][1];
2200
1/2
✗ Branch 1 not taken.
✓ Branch 2 taken 18789 times.
 18789 if (!(che=ff_aac_get_che(ac, elem_type, elem_id))) {
2201 ✗ av_log(ac->avctx, AV_LOG_ERROR,
2202 "channel element %d.%d is not allocated\n",
2203 elem_type, elem_id);
2204 ✗ return AVERROR_INVALIDDATA;
2205 }
2206 18789 che->present = 1;
2207
2/2
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✓ Branch 1 taken 16365 times.
 18789 if (aot != AOT_ER_AAC_ELD)
2208 2424 skip_bits(gb, 4);
2209
3/4
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✓ Branch 1 taken 11445 times.
✓ Branch 2 taken 606 times.
✗ Branch 3 not taken.
 18789 switch (elem_type) {
2210 6738 case TYPE_SCE:
2211 6738 err = ff_aac_decode_ics(ac, &che->ch[0], gb, 0, 0);
2212 6738 break;
2213 11445 case TYPE_CPE:
2214 11445 err = decode_cpe(ac, gb, che);
2215 11445 break;
2216 606 case TYPE_LFE:
2217 606 err = ff_aac_decode_ics(ac, &che->ch[0], gb, 0, 0);
2218 606 break;
2219 }
2220
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 18789 times.
 18789 if (err < 0)
2221 ✗ return err;
2222 }
2223
2224 16971 spectral_to_sample(ac, samples);
2225
2226
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) {
2227 ✗ av_log(avctx, AV_LOG_ERROR, "no frame data found\n");
2228 ✗ return AVERROR_INVALIDDATA;
2229 }
2230
2231 16971 ac->frame->nb_samples = samples;
2232 16971 ac->frame->sample_rate = avctx->sample_rate;
2233 16971 ac->frame->flags |= AV_FRAME_FLAG_KEY;
2234 16971 *got_frame_ptr = 1;
2235
2236 16971 skip_bits_long(gb, get_bits_left(gb));
2237 16971 return 0;
2238 }
2239
2240 32730 static int decode_frame_ga(AVCodecContext *avctx, AACDecContext *ac,
2241 GetBitContext *gb, int *got_frame_ptr)
2242 {
2243 int err;
2244 int is_dmono;
2245 int elem_id;
2246 32730 enum RawDataBlockType elem_type, che_prev_type = TYPE_END;
2247 32730 uint8_t che_presence[4][MAX_ELEM_ID] = {{0}};
2248 32730 ChannelElement *che = NULL, *che_prev = NULL;
2249 32730 int samples = 0, multiplier, audio_found = 0, pce_found = 0, sce_count = 0;
2250 32730 AVFrame *frame = ac->frame;
2251
2252 32730 int payload_alignment = get_bits_count(gb);
2253 // parse
2254
2/2
✓ Branch 1 taken 72036 times.
✓ Branch 2 taken 32730 times.
 104766 while ((elem_type = get_bits(gb, 3)) != TYPE_END) {
2255 72036 elem_id = get_bits(gb, 4);
2256
2257
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 72036 times.
 72036 if (avctx->debug & FF_DEBUG_STARTCODE)
2258 ✗ av_log(avctx, AV_LOG_DEBUG, "Elem type:%x id:%x\n", elem_type, elem_id);
2259
2260
1/4
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✗ Branch 2 not taken.
✗ Branch 3 not taken.
 72036 if (!avctx->ch_layout.nb_channels && elem_type != TYPE_PCE)
2261 ✗ return AVERROR_INVALIDDATA;
2262
2263
2/2
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✓ Branch 1 taken 28058 times.
 72036 if (elem_type < TYPE_DSE) {
2264
1/2
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✓ Branch 1 taken 43978 times.
 43978 if (che_presence[elem_type][elem_id]) {
2265 ✗ int error = che_presence[elem_type][elem_id] > 1;
2266 ✗ av_log(ac->avctx, error ? AV_LOG_ERROR : AV_LOG_DEBUG, "channel element %d.%d duplicate\n",
2267 elem_type, elem_id);
2268 ✗ if (error)
2269 ✗ return AVERROR_INVALIDDATA;
2270 }
2271 43978 che_presence[elem_type][elem_id]++;
2272
2273
1/2
✗ Branch 1 not taken.
✓ Branch 2 taken 43978 times.
 43978 if (!(che=ff_aac_get_che(ac, elem_type, elem_id))) {
2274 ✗ av_log(ac->avctx, AV_LOG_ERROR, "channel element %d.%d is not allocated\n",
2275 elem_type, elem_id);
2276 ✗ return AVERROR_INVALIDDATA;
2277 }
2278
2/2
✓ Branch 0 taken 387 times.
✓ Branch 1 taken 43591 times.
 43978 samples = ac->oc[1].m4ac.frame_length_short ? 960 : 1024;
2279 43978 che->present = 1;
2280 }
2281
2282
6/8
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✓ Branch 3 taken 2898 times.
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✗ Branch 5 not taken.
✓ Branch 6 taken 25235 times.
✗ Branch 7 not taken.
 72036 switch (elem_type) {
2283
2284 20963 case TYPE_SCE:
2285 20963 err = ff_aac_decode_ics(ac, &che->ch[0], gb, 0, 0);
2286 20963 audio_found = 1;
2287 20963 sce_count++;
2288 20963 break;
2289
2290 18943 case TYPE_CPE:
2291 18943 err = decode_cpe(ac, gb, che);
2292 18943 audio_found = 1;
2293 18943 break;
2294
2295 1174 case TYPE_CCE:
2296 1174 err = ac->proc.decode_cce(ac, gb, che);
2297 1174 break;
2298
2299 2898 case TYPE_LFE:
2300 2898 err = ff_aac_decode_ics(ac, &che->ch[0], gb, 0, 0);
2301 2898 audio_found = 1;
2302 2898 break;
2303
2304 2823 case TYPE_DSE:
2305 2823 err = skip_data_stream_element(ac, gb);
2306 2823 break;
2307
2308 ✗ case TYPE_PCE: {
2309 ✗ uint8_t layout_map[MAX_ELEM_ID*4][3] = {{0}};
2310 int tags;
2311
2312 ✗ int pushed = push_output_configuration(ac);
2313 ✗ if (pce_found && !pushed)
2314 ✗ return AVERROR_INVALIDDATA;
2315
2316 ✗ tags = decode_pce(avctx, &ac->oc[1].m4ac, layout_map, gb,
2317 payload_alignment);
2318 ✗ if (tags < 0) {
2319 ✗ err = tags;
2320 ✗ break;
2321 }
2322 ✗ if (pce_found) {
2323 ✗ av_log(avctx, AV_LOG_ERROR,
2324 "Not evaluating a further program_config_element as this construct is dubious at best.\n");
2325 ✗ pop_output_configuration(ac);
2326 } else {
2327 ✗ err = ff_aac_output_configure(ac, layout_map, tags, OC_TRIAL_PCE, 1);
2328 ✗ if (!err)
2329 ✗ ac->oc[1].m4ac.chan_config = 0;
2330 ✗ pce_found = 1;
2331 }
2332 ✗ break;
2333 }
2334
2335 25235 case TYPE_FIL:
2336
2/2
✓ Branch 0 taken 16453 times.
✓ Branch 1 taken 8782 times.
 25235 if (elem_id == 15)
2337 16453 elem_id += get_bits(gb, 8) - 1;
2338
1/2
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✓ Branch 2 taken 25235 times.
 25235 if (get_bits_left(gb) < 8 * elem_id) {
2339 ✗ av_log(avctx, AV_LOG_ERROR, "TYPE_FIL: "overread_err);
2340 ✗ return AVERROR_INVALIDDATA;
2341 }
2342 25235 err = 0;
2343
2/2
✓ Branch 0 taken 23696 times.
✓ Branch 1 taken 25235 times.
 48931 while (elem_id > 0) {
2344 23696 int ret = decode_extension_payload(ac, gb, elem_id, che_prev, che_prev_type);
2345
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 23696 times.
 23696 if (ret < 0) {
2346 ✗ err = ret;
2347 ✗ break;
2348 }
2349 23696 elem_id -= ret;
2350 }
2351 25235 break;
2352
2353 ✗ default:
2354 ✗ err = AVERROR_BUG; /* should not happen, but keeps compiler happy */
2355 ✗ break;
2356 }
2357
2358
2/2
✓ Branch 0 taken 43978 times.
✓ Branch 1 taken 28058 times.
 72036 if (elem_type < TYPE_DSE) {
2359 43978 che_prev = che;
2360 43978 che_prev_type = elem_type;
2361 }
2362
2363
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 72036 times.
 72036 if (err)
2364 ✗ return err;
2365
2366
1/2
✗ Branch 1 not taken.
✓ Branch 2 taken 72036 times.
 72036 if (get_bits_left(gb) < 3) {
2367 ✗ av_log(avctx, AV_LOG_ERROR, overread_err);
2368 ✗ return AVERROR_INVALIDDATA;
2369 }
2370 }
2371
2372
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 32730 times.
 32730 if (!avctx->ch_layout.nb_channels)
2373 ✗ return 0;
2374
2375
4/4
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✓ Branch 1 taken 24849 times.
✓ Branch 2 taken 5583 times.
✓ Branch 3 taken 2298 times.
 32730 multiplier = (ac->oc[1].m4ac.sbr == 1) ? ac->oc[1].m4ac.ext_sample_rate > ac->oc[1].m4ac.sample_rate : 0;
2376 32730 samples <<= multiplier;
2377
2378 32730 spectral_to_sample(ac, samples);
2379
2380
2/4
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✗ Branch 1 not taken.
✓ Branch 2 taken 32730 times.
✗ Branch 3 not taken.
 32730 if (ac->oc[1].status && audio_found) {
2381 32730 avctx->sample_rate = ac->oc[1].m4ac.sample_rate << multiplier;
2382 32730 avctx->frame_size = samples;
2383 32730 ac->oc[1].status = OC_LOCKED;
2384 }
2385
2386
1/4
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✓ Branch 1 taken 32730 times.
✗ Branch 2 not taken.
✗ Branch 3 not taken.
 32730 if (!ac->frame->data[0] && samples) {
2387 ✗ av_log(avctx, AV_LOG_ERROR, "no frame data found\n");
2388 ✗ return AVERROR_INVALIDDATA;
2389 }
2390
2391
1/2
✓ Branch 0 taken 32730 times.
✗ Branch 1 not taken.
 32730 if (samples) {
2392 32730 ac->frame->nb_samples = samples;
2393 32730 ac->frame->sample_rate = avctx->sample_rate;
2394 32730 ac->frame->flags |= AV_FRAME_FLAG_KEY;
2395 32730 *got_frame_ptr = 1;
2396 } else {
2397 ✗ av_frame_unref(ac->frame);
2398 ✗ *got_frame_ptr = 0;
2399 }
2400
2401 /* for dual-mono audio (SCE + SCE) */
2402
1/6
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✗ Branch 4 not taken.
✗ Branch 5 not taken.
 32730 is_dmono = ac->dmono_mode && sce_count == 2 &&
2403 ✗ !av_channel_layout_compare(&ac->oc[1].ch_layout,
2404 ✗ &(AVChannelLayout)AV_CHANNEL_LAYOUT_STEREO);
2405
1/2
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✓ Branch 1 taken 32730 times.
 32730 if (is_dmono) {
2406 ✗ if (ac->dmono_mode == 1)
2407 ✗ frame->data[1] = frame->data[0];
2408 ✗ else if (ac->dmono_mode == 2)
2409 ✗ frame->data[0] = frame->data[1];
2410 }
2411
2412 32730 return 0;
2413 }
2414
2415 36614 static int aac_decode_frame_int(AVCodecContext *avctx, AVFrame *frame,
2416 int *got_frame_ptr, GetBitContext *gb,
2417 const AVPacket *avpkt)
2418 {
2419 int err;
2420 36614 AACDecContext *ac = avctx->priv_data;
2421
2422 36614 ac->frame = frame;
2423 36614 *got_frame_ptr = 0;
2424
2425 // USAC can't be packed into ADTS due to field size limitations.
2426
3/4
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✓ Branch 2 taken 32912 times.
✓ Branch 3 taken 3702 times.
✗ Branch 4 not taken.
 36614 if (show_bits(gb, 12) == 0xfff && ac->oc[1].m4ac.object_type != AOT_USAC) {
2427
1/2
✗ Branch 1 not taken.
✓ Branch 2 taken 3702 times.
 3702 if ((err = parse_adts_frame_header(ac, gb)) < 0) {
2428 ✗ av_log(avctx, AV_LOG_ERROR, "Error decoding AAC frame header.\n");
2429 ✗ goto fail;
2430 }
2431
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 3702 times.
 3702 if (ac->oc[1].m4ac.sampling_index > 12) {
2432 ✗ av_log(ac->avctx, AV_LOG_ERROR, "invalid sampling rate index %d\n", ac->oc[1].m4ac.sampling_index);
2433 ✗ err = AVERROR_INVALIDDATA;
2434 ✗ goto fail;
2435 }
2436 }
2437
2438
1/2
✗ Branch 1 not taken.
✓ Branch 2 taken 36614 times.
 36614 if ((err = frame_configure_elements(avctx)) < 0)
2439 ✗ goto fail;
2440
2441 // The AV_PROFILE_AAC_* defines are all object_type - 1
2442 // This may lead to an undefined profile being signaled
2443 36614 ac->avctx->profile = ac->oc[1].m4ac.object_type - 1;
2444
2445 36614 ac->tags_mapped = 0;
2446
2447
2/2
✓ Branch 0 taken 3884 times.
✓ Branch 1 taken 32730 times.
 36614 if (ac->oc[1].m4ac.object_type == AOT_USAC) {
2448
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 3884 times.
 3884 if (ac->is_fixed) {
2449 ✗ avpriv_report_missing_feature(ac->avctx,
2450 "AAC USAC fixed-point decoding");
2451 ✗ return AVERROR_PATCHWELCOME;
2452 }
2453 #if CONFIG_AAC_DECODER
2454 3884 err = ff_aac_usac_decode_frame(avctx, ac, gb, got_frame_ptr);
2455
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 3884 times.
 3884 if (err < 0)
2456 ✗ goto fail;
2457 #endif
2458 } else {
2459 32730 err = decode_frame_ga(avctx, ac, gb, got_frame_ptr);
2460
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 32730 times.
 32730 if (err < 0)
2461 ✗ goto fail;
2462 }
2463
2464 36614 return err;
2465
2466 ✗ fail:
2467 ✗ pop_output_configuration(ac);
2468 ✗ return err;
2469 }
2470
2471 53070 static int aac_decode_frame(AVCodecContext *avctx, AVFrame *frame,
2472 int *got_frame_ptr, AVPacket *avpkt)
2473 {
2474 53070 AACDecContext *ac = avctx->priv_data;
2475 53070 const uint8_t *buf = avpkt->data;
2476 53070 int buf_size = avpkt->size;
2477 GetBitContext gb;
2478 int buf_consumed;
2479 int buf_offset;
2480 int err;
2481 size_t new_extradata_size;
2482 53070 const uint8_t *new_extradata = av_packet_get_side_data(avpkt,
2483 AV_PKT_DATA_NEW_EXTRADATA,
2484 &new_extradata_size);
2485 size_t jp_dualmono_size;
2486 53070 const uint8_t *jp_dualmono = av_packet_get_side_data(avpkt,
2487 AV_PKT_DATA_JP_DUALMONO,
2488 &jp_dualmono_size);
2489
2490
2/2
✓ Branch 0 taken 1 times.
✓ Branch 1 taken 53069 times.
 53070 if (new_extradata) {
2491 /* discard previous configuration */
2492 1 ac->oc[1].status = OC_NONE;
2493 1 err = decode_audio_specific_config(ac, ac->avctx, &ac->oc[1],
2494 new_extradata,
2495 1 new_extradata_size * 8LL, 1);
2496
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 1 times.
 1 if (err < 0) {
2497 ✗ return err;
2498 }
2499 }
2500
2501 53070 ac->dmono_mode = 0;
2502
1/4
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 53070 if (jp_dualmono && jp_dualmono_size > 0)
2503 ✗ ac->dmono_mode = 1 + *jp_dualmono;
2504
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 53070 if (ac->force_dmono_mode >= 0)
2505 ✗ ac->dmono_mode = ac->force_dmono_mode;
2506
2507
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 53070 if (INT_MAX / 8 <= buf_size)
2508 ✗ return AVERROR_INVALIDDATA;
2509
2510
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 53070 if ((err = init_get_bits8(&gb, buf, buf_size)) < 0)
2511 ✗ return err;
2512
2513
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 53070 switch (ac->oc[1].m4ac.object_type) {
2514 16971 case AOT_ER_AAC_LC:
2515 case AOT_ER_AAC_LTP:
2516 case AOT_ER_AAC_LD:
2517 case AOT_ER_AAC_ELD:
2518 16971 err = aac_decode_er_frame(avctx, frame, got_frame_ptr, &gb);
2519 16971 break;
2520 36099 default:
2521 36099 err = aac_decode_frame_int(avctx, frame, got_frame_ptr, &gb, avpkt);
2522 }
2523
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 53070 if (err < 0)
2524 ✗ return err;
2525
2526 53070 buf_consumed = (get_bits_count(&gb) + 7) >> 3;
2527
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 53070 for (buf_offset = buf_consumed; buf_offset < buf_size; buf_offset++)
2528 ✗ if (buf[buf_offset])
2529 ✗ break;
2530
2531
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 53070 return buf_size > buf_offset ? buf_consumed : buf_size;
2532 }
2533
2534 #if CONFIG_AAC_LATM_DECODER
2535 #include "aacdec_latm.h"
2536 #endif
2537
2538 #define AACDEC_FLAGS AV_OPT_FLAG_DECODING_PARAM | AV_OPT_FLAG_AUDIO_PARAM
2539 #define OFF(field) offsetof(AACDecContext, field)
2540 static const AVOption options[] = {
2541 /**
2542 * AVOptions for Japanese DTV specific extensions (ADTS only)
2543 */
2544 {"dual_mono_mode", "Select the channel to decode for dual mono",
2545 OFF(force_dmono_mode), AV_OPT_TYPE_INT, {.i64=-1}, -1, 2,
2546 AACDEC_FLAGS, .unit = "dual_mono_mode"},
2547
2548 {"auto", "autoselection", 0, AV_OPT_TYPE_CONST, {.i64=-1}, INT_MIN, INT_MAX, AACDEC_FLAGS, .unit = "dual_mono_mode"},
2549 {"main", "Select Main/Left channel", 0, AV_OPT_TYPE_CONST, {.i64= 1}, INT_MIN, INT_MAX, AACDEC_FLAGS, .unit = "dual_mono_mode"},
2550 {"sub" , "Select Sub/Right channel", 0, AV_OPT_TYPE_CONST, {.i64= 2}, INT_MIN, INT_MAX, AACDEC_FLAGS, .unit = "dual_mono_mode"},
2551 {"both", "Select both channels", 0, AV_OPT_TYPE_CONST, {.i64= 0}, INT_MIN, INT_MAX, AACDEC_FLAGS, .unit = "dual_mono_mode"},
2552
2553 { "channel_order", "Order in which the channels are to be exported",
2554 OFF(output_channel_order), AV_OPT_TYPE_INT,
2555 { .i64 = CHANNEL_ORDER_DEFAULT }, 0, 1, AACDEC_FLAGS, .unit = "channel_order" },
2556 { "default", "normal libavcodec channel order", 0, AV_OPT_TYPE_CONST,
2557 { .i64 = CHANNEL_ORDER_DEFAULT }, .flags = AACDEC_FLAGS, .unit = "channel_order" },
2558 { "coded", "order in which the channels are coded in the bitstream",
2559 0, AV_OPT_TYPE_CONST, { .i64 = CHANNEL_ORDER_CODED }, .flags = AACDEC_FLAGS, .unit = "channel_order" },
2560
2561 {NULL},
2562 };
2563
2564 static const AVClass decoder_class = {
2565 .class_name = "AAC decoder",
2566 .item_name = av_default_item_name,
2567 .option = options,
2568 .version = LIBAVUTIL_VERSION_INT,
2569 };
2570
2571 #if CONFIG_AAC_DECODER
2572 const FFCodec ff_aac_decoder = {
2573 .p.name = "aac",
2574 CODEC_LONG_NAME("AAC (Advanced Audio Coding)"),
2575 .p.type = AVMEDIA_TYPE_AUDIO,
2576 .p.id = AV_CODEC_ID_AAC,
2577 .p.priv_class = &decoder_class,
2578 .priv_data_size = sizeof(AACDecContext),
2579 .init = ff_aac_decode_init_float,
2580 .close = decode_close,
2581 FF_CODEC_DECODE_CB(aac_decode_frame),
2582 CODEC_SAMPLEFMTS(AV_SAMPLE_FMT_FLTP),
2583 .p.capabilities = AV_CODEC_CAP_CHANNEL_CONF | AV_CODEC_CAP_DR1,
2584 .caps_internal = FF_CODEC_CAP_INIT_CLEANUP,
2585 CODEC_CH_LAYOUTS_ARRAY(ff_aac_ch_layout),
2586 .flush = flush,
2587 .p.profiles = NULL_IF_CONFIG_SMALL(ff_aac_profiles),
2588 };
2589 #endif
2590
2591 #if CONFIG_AAC_FIXED_DECODER
2592 const FFCodec ff_aac_fixed_decoder = {
2593 .p.name = "aac_fixed",
2594 CODEC_LONG_NAME("AAC (Advanced Audio Coding)"),
2595 .p.type = AVMEDIA_TYPE_AUDIO,
2596 .p.id = AV_CODEC_ID_AAC,
2597 .p.priv_class = &decoder_class,
2598 .priv_data_size = sizeof(AACDecContext),
2599 .init = ff_aac_decode_init_fixed,
2600 .close = decode_close,
2601 FF_CODEC_DECODE_CB(aac_decode_frame),
2602 CODEC_SAMPLEFMTS(AV_SAMPLE_FMT_S32P),
2603 .p.capabilities = AV_CODEC_CAP_CHANNEL_CONF | AV_CODEC_CAP_DR1,
2604 .caps_internal = FF_CODEC_CAP_INIT_CLEANUP,
2605 CODEC_CH_LAYOUTS_ARRAY(ff_aac_ch_layout),
2606 .p.profiles = NULL_IF_CONFIG_SMALL(ff_aac_profiles),
2607 .flush = flush,
2608 };
2609 #endif
2610