Coverage Report

Created: 2026-08-31 06:46

next uncovered line (L), next uncovered region (R), next uncovered branch (B)
/src/aac/libMpegTPDec/src/tpdec_latm.cpp
Line
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Source
1
/* -----------------------------------------------------------------------------
2
Software License for The Fraunhofer FDK AAC Codec Library for Android
3
4
© Copyright  1995 - 2021 Fraunhofer-Gesellschaft zur Förderung der angewandten
5
Forschung e.V. All rights reserved.
6
7
 1.    INTRODUCTION
8
The Fraunhofer FDK AAC Codec Library for Android ("FDK AAC Codec") is software
9
that implements the MPEG Advanced Audio Coding ("AAC") encoding and decoding
10
scheme for digital audio. This FDK AAC Codec software is intended to be used on
11
a wide variety of Android devices.
12
13
AAC's HE-AAC and HE-AAC v2 versions are regarded as today's most efficient
14
general perceptual audio codecs. AAC-ELD is considered the best-performing
15
full-bandwidth communications codec by independent studies and is widely
16
deployed. AAC has been standardized by ISO and IEC as part of the MPEG
17
specifications.
18
19
Patent licenses for necessary patent claims for the FDK AAC Codec (including
20
those of Fraunhofer) may be obtained through Via Licensing
21
(www.vialicensing.com) or through the respective patent owners individually for
22
the purpose of encoding or decoding bit streams in products that are compliant
23
with the ISO/IEC MPEG audio standards. Please note that most manufacturers of
24
Android devices already license these patent claims through Via Licensing or
25
directly from the patent owners, and therefore FDK AAC Codec software may
26
already be covered under those patent licenses when it is used for those
27
licensed purposes only.
28
29
Commercially-licensed AAC software libraries, including floating-point versions
30
with enhanced sound quality, are also available from Fraunhofer. Users are
31
encouraged to check the Fraunhofer website for additional applications
32
information and documentation.
33
34
2.    COPYRIGHT LICENSE
35
36
Redistribution and use in source and binary forms, with or without modification,
37
are permitted without payment of copyright license fees provided that you
38
satisfy the following conditions:
39
40
You must retain the complete text of this software license in redistributions of
41
the FDK AAC Codec or your modifications thereto in source code form.
42
43
You must retain the complete text of this software license in the documentation
44
and/or other materials provided with redistributions of the FDK AAC Codec or
45
your modifications thereto in binary form. You must make available free of
46
charge copies of the complete source code of the FDK AAC Codec and your
47
modifications thereto to recipients of copies in binary form.
48
49
The name of Fraunhofer may not be used to endorse or promote products derived
50
from this library without prior written permission.
51
52
You may not charge copyright license fees for anyone to use, copy or distribute
53
the FDK AAC Codec software or your modifications thereto.
54
55
Your modified versions of the FDK AAC Codec must carry prominent notices stating
56
that you changed the software and the date of any change. For modified versions
57
of the FDK AAC Codec, the term "Fraunhofer FDK AAC Codec Library for Android"
58
must be replaced by the term "Third-Party Modified Version of the Fraunhofer FDK
59
AAC Codec Library for Android."
60
61
3.    NO PATENT LICENSE
62
63
NO EXPRESS OR IMPLIED LICENSES TO ANY PATENT CLAIMS, including without
64
limitation the patents of Fraunhofer, ARE GRANTED BY THIS SOFTWARE LICENSE.
65
Fraunhofer provides no warranty of patent non-infringement with respect to this
66
software.
67
68
You may use this FDK AAC Codec software or modifications thereto only for
69
purposes that are authorized by appropriate patent licenses.
70
71
4.    DISCLAIMER
72
73
This FDK AAC Codec software is provided by Fraunhofer on behalf of the copyright
74
holders and contributors "AS IS" and WITHOUT ANY EXPRESS OR IMPLIED WARRANTIES,
75
including but not limited to the implied warranties of merchantability and
76
fitness for a particular purpose. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR
77
CONTRIBUTORS BE LIABLE for any direct, indirect, incidental, special, exemplary,
78
or consequential damages, including but not limited to procurement of substitute
79
goods or services; loss of use, data, or profits, or business interruption,
80
however caused and on any theory of liability, whether in contract, strict
81
liability, or tort (including negligence), arising in any way out of the use of
82
this software, even if advised of the possibility of such damage.
83
84
5.    CONTACT INFORMATION
85
86
Fraunhofer Institute for Integrated Circuits IIS
87
Attention: Audio and Multimedia Departments - FDK AAC LL
88
Am Wolfsmantel 33
89
91058 Erlangen, Germany
90
91
www.iis.fraunhofer.de/amm
92
amm-info@iis.fraunhofer.de
93
----------------------------------------------------------------------------- */
94
95
/******************* MPEG transport format decoder library *********************
96
97
   Author(s):   Daniel Homm
98
99
   Description:
100
101
*******************************************************************************/
102
103
#include "tpdec_latm.h"
104
105
#include "FDK_bitstream.h"
106
107
4.67M
#define TPDEC_TRACKINDEX(p, l) (1 * (p) + (l))
108
109
104k
static UINT CLatmDemux_GetValue(HANDLE_FDK_BITSTREAM bs) {
110
104k
  UCHAR bytesForValue = 0, tmp = 0;
111
104k
  int value = 0;
112
113
104k
  bytesForValue = (UCHAR)FDKreadBits(bs, 2);
114
115
266k
  for (UINT i = 0; i <= bytesForValue; i++) {
116
161k
    value <<= 8;
117
161k
    tmp = (UCHAR)FDKreadBits(bs, 8);
118
161k
    value += tmp;
119
161k
  }
120
121
104k
  return value;
122
104k
}
123
124
static TRANSPORTDEC_ERROR CLatmDemux_ReadAudioMuxElement(
125
    HANDLE_FDK_BITSTREAM bs, CLatmDemux *pLatmDemux, int m_muxConfigPresent,
126
    CSTpCallBacks *pTpDecCallbacks, CSAudioSpecificConfig *pAsc,
127
545k
    int *pfConfigFound) {
128
545k
  TRANSPORTDEC_ERROR ErrorStatus = TRANSPORTDEC_OK;
129
130
545k
  if (m_muxConfigPresent) {
131
545k
    pLatmDemux->m_useSameStreamMux = FDKreadBits(bs, 1);
132
133
545k
    if (!pLatmDemux->m_useSameStreamMux) {
134
504k
      int i;
135
504k
      UCHAR configChanged = 0;
136
504k
      UCHAR configMode = 0;
137
138
504k
      FDK_BITSTREAM bsAnchor;
139
140
504k
      FDK_BITSTREAM bsAnchorDummyParse;
141
142
504k
      if (!pLatmDemux->applyAsc) {
143
116k
        bsAnchorDummyParse = *bs;
144
116k
        pLatmDemux->newCfgHasAudioPreRoll = 0;
145
        /* do dummy-parsing of ASC to determine if there is an audioPreRoll */
146
116k
        configMode |= AC_CM_DET_CFG_CHANGE;
147
116k
        if (TRANSPORTDEC_OK !=
148
116k
            (ErrorStatus = CLatmDemux_ReadStreamMuxConfig(
149
116k
                 bs, pLatmDemux, pTpDecCallbacks, pAsc, pfConfigFound,
150
116k
                 configMode, configChanged))) {
151
3.25k
          goto bail;
152
3.25k
        }
153
154
        /* Allow flushing only when audioPreroll functionality is enabled in
155
         * current and new config otherwise the new config can be applied
156
         * immediately. */
157
112k
        if (pAsc->m_sc.m_usacConfig.element[0]
158
112k
                .extElement.usacExtElementHasAudioPreRoll &&
159
559
            pLatmDemux->newCfgHasAudioPreRoll) {
160
229
          pLatmDemux->newCfgHasAudioPreRoll = 0;
161
          /* with audioPreRoll we must flush before applying new cfg */
162
229
          pLatmDemux->applyAsc = 0;
163
112k
        } else {
164
112k
          *bs = bsAnchorDummyParse;
165
112k
          pLatmDemux->applyAsc = 1; /* apply new config immediate */
166
112k
        }
167
112k
      }
168
169
500k
      if (pLatmDemux->applyAsc) {
170
1.10M
        for (i = 0; i < 2; i++) {
171
809k
          configMode = 0;
172
173
809k
          if (i == 0) {
174
500k
            configMode |= AC_CM_DET_CFG_CHANGE;
175
500k
            bsAnchor = *bs;
176
500k
          } else {
177
308k
            configMode |= AC_CM_ALLOC_MEM;
178
308k
            *bs = bsAnchor;
179
308k
          }
180
181
809k
          if (TRANSPORTDEC_OK !=
182
809k
              (ErrorStatus = CLatmDemux_ReadStreamMuxConfig(
183
809k
                   bs, pLatmDemux, pTpDecCallbacks, pAsc, pfConfigFound,
184
809k
                   configMode, configChanged))) {
185
203k
            goto bail;
186
203k
          }
187
188
606k
          if (ErrorStatus == TRANSPORTDEC_OK) {
189
606k
            if ((i == 0) && (pAsc->AacConfigChanged || pAsc->SbrConfigChanged ||
190
218k
                             pAsc->SacConfigChanged)) {
191
218k
              int errC;
192
193
218k
              configChanged = 1;
194
218k
              errC = pTpDecCallbacks->cbFreeMem(pTpDecCallbacks->cbFreeMemData,
195
218k
                                                pAsc);
196
218k
              if (errC != 0) {
197
0
                ErrorStatus = TRANSPORTDEC_PARSE_ERROR;
198
0
                goto bail;
199
0
              }
200
218k
            }
201
606k
          }
202
606k
        }
203
500k
      }
204
500k
    }
205
545k
  }
206
207
  /* If there was no configuration read, its not possible to parse
208
   * PayloadLengthInfo below. */
209
339k
  if (!*pfConfigFound) {
210
37.1k
    ErrorStatus = TRANSPORTDEC_SYNC_ERROR;
211
37.1k
    goto bail;
212
37.1k
  }
213
214
302k
  if (pLatmDemux->m_AudioMuxVersionA == 0) {
215
    /* Do only once per call, because parsing and decoding is done in-line. */
216
302k
    if (TRANSPORTDEC_OK !=
217
302k
        (ErrorStatus = CLatmDemux_ReadPayloadLengthInfo(bs, pLatmDemux))) {
218
167k
      *pfConfigFound = 0;
219
167k
      goto bail;
220
167k
    }
221
302k
  } else {
222
    /* audioMuxVersionA > 0 is reserved for future extensions */
223
0
    ErrorStatus = TRANSPORTDEC_UNSUPPORTED_FORMAT;
224
0
    *pfConfigFound = 0;
225
0
    goto bail;
226
0
  }
227
228
545k
bail:
229
545k
  if (ErrorStatus != TRANSPORTDEC_OK) {
230
410k
    pLatmDemux->applyAsc = 1;
231
410k
  }
232
233
545k
  return (ErrorStatus);
234
302k
}
235
236
TRANSPORTDEC_ERROR CLatmDemux_Read(HANDLE_FDK_BITSTREAM bs,
237
                                   CLatmDemux *pLatmDemux, TRANSPORT_TYPE tt,
238
                                   CSTpCallBacks *pTpDecCallbacks,
239
                                   CSAudioSpecificConfig *pAsc,
240
                                   int *pfConfigFound,
241
546k
                                   const INT ignoreBufferFullness) {
242
546k
  UINT cntBits;
243
546k
  UINT cmpBufferFullness;
244
546k
  UINT audioMuxLengthBytesLast = 0;
245
546k
  TRANSPORTDEC_ERROR ErrorStatus = TRANSPORTDEC_OK;
246
247
546k
  cntBits = FDKgetValidBits(bs);
248
249
546k
  if ((INT)cntBits < MIN_LATM_HEADERLENGTH) {
250
248
    return TRANSPORTDEC_NOT_ENOUGH_BITS;
251
248
  }
252
253
545k
  if (TRANSPORTDEC_OK != (ErrorStatus = CLatmDemux_ReadAudioMuxElement(
254
545k
                              bs, pLatmDemux, (tt != TT_MP4_LATM_MCP0),
255
545k
                              pTpDecCallbacks, pAsc, pfConfigFound)))
256
410k
    return (ErrorStatus);
257
258
135k
  if (!ignoreBufferFullness) {
259
43.8k
    cmpBufferFullness =
260
43.8k
        24 + audioMuxLengthBytesLast * 8 +
261
43.8k
        pLatmDemux->m_linfo[0][0].m_bufferFullness *
262
43.8k
            pAsc[TPDEC_TRACKINDEX(0, 0)].m_channelConfiguration * 32;
263
264
    /* evaluate buffer fullness */
265
266
43.8k
    if (pLatmDemux->m_linfo[0][0].m_bufferFullness != 0xFF) {
267
43.3k
      if (!pLatmDemux->BufferFullnessAchieved) {
268
29.4k
        if (cntBits < cmpBufferFullness) {
269
          /* condition for start of decoding is not fulfilled */
270
271
          /* the current frame will not be decoded */
272
104
          return TRANSPORTDEC_NOT_ENOUGH_BITS;
273
29.2k
        } else {
274
29.2k
          pLatmDemux->BufferFullnessAchieved = 1;
275
29.2k
        }
276
29.4k
      }
277
43.3k
    }
278
43.8k
  }
279
280
135k
  return (ErrorStatus);
281
135k
}
282
283
TRANSPORTDEC_ERROR CLatmDemux_ReadStreamMuxConfig(
284
    HANDLE_FDK_BITSTREAM bs, CLatmDemux *pLatmDemux,
285
    CSTpCallBacks *pTpDecCallbacks, CSAudioSpecificConfig *pAsc,
286
925k
    int *pfConfigFound, UCHAR configMode, UCHAR configChanged) {
287
925k
  CSAudioSpecificConfig ascDummy; /* the actual config is needed for flushing,
288
                                     after that new config can be parsed */
289
925k
  CSAudioSpecificConfig *pAscDummy;
290
925k
  pAscDummy = &ascDummy;
291
925k
  pLatmDemux->usacExplicitCfgChanged = 0;
292
925k
  LATM_LAYER_INFO *p_linfo = NULL;
293
925k
  TRANSPORTDEC_ERROR ErrorStatus = TRANSPORTDEC_OK;
294
925k
  UCHAR updateConfig[1 * 1] = {0};
295
296
925k
  pLatmDemux->m_AudioMuxVersion = FDKreadBits(bs, 1);
297
298
925k
  if (pLatmDemux->m_AudioMuxVersion == 0) {
299
869k
    pLatmDemux->m_AudioMuxVersionA = 0;
300
869k
  } else {
301
56.5k
    pLatmDemux->m_AudioMuxVersionA = FDKreadBits(bs, 1);
302
56.5k
  }
303
304
925k
  if (pLatmDemux->m_AudioMuxVersionA == 0) {
305
924k
    if (pLatmDemux->m_AudioMuxVersion == 1) {
306
55.0k
      pLatmDemux->m_taraBufferFullness = CLatmDemux_GetValue(bs);
307
55.0k
    }
308
924k
    pLatmDemux->m_allStreamsSameTimeFraming = FDKreadBits(bs, 1);
309
924k
    pLatmDemux->m_noSubFrames = FDKreadBits(bs, 6) + 1;
310
924k
    pLatmDemux->m_numProgram = FDKreadBits(bs, 4) + 1;
311
312
924k
    if (pLatmDemux->m_numProgram > LATM_MAX_PROG) {
313
24.0k
      ErrorStatus = TRANSPORTDEC_UNSUPPORTED_FORMAT;
314
24.0k
      goto bail;
315
24.0k
    }
316
317
900k
    int idCnt = 0;
318
1.64M
    for (UINT prog = 0; prog < pLatmDemux->m_numProgram; prog++) {
319
900k
      pLatmDemux->m_numLayer[prog] = FDKreadBits(bs, 3) + 1;
320
900k
      if (pLatmDemux->m_numLayer[prog] > LATM_MAX_LAYER) {
321
7.80k
        ErrorStatus = TRANSPORTDEC_UNSUPPORTED_FORMAT;
322
7.80k
        goto bail;
323
7.80k
      }
324
325
1.63M
      for (UINT lay = 0; lay < pLatmDemux->m_numLayer[prog]; lay++) {
326
892k
        int useSameConfig;
327
892k
        p_linfo = &pLatmDemux->m_linfo[prog][lay];
328
329
892k
        p_linfo->m_streamID = idCnt++;
330
892k
        p_linfo->m_frameLengthInBits = 0;
331
332
892k
        if ((prog == 0) && (lay == 0)) {
333
892k
          useSameConfig = 0;
334
892k
        } else {
335
0
          useSameConfig = FDKreadBits(bs, 1);
336
0
        }
337
338
892k
        if (useSameConfig) {
339
0
          if (lay > 0) {
340
0
            FDKmemcpy(&pAsc[TPDEC_TRACKINDEX(prog, lay)],
341
0
                      &pAsc[TPDEC_TRACKINDEX(prog, lay - 1)],
342
0
                      sizeof(CSAudioSpecificConfig));
343
0
          } else {
344
0
            ErrorStatus = TRANSPORTDEC_PARSE_ERROR;
345
0
            goto bail;
346
0
          }
347
892k
        } else {
348
892k
          UINT usacConfigLengthPrev = 0;
349
892k
          UCHAR usacConfigPrev[TP_USAC_MAX_CONFIG_LEN];
350
351
892k
          if (!(pLatmDemux->applyAsc) &&
352
115k
              (pAsc[TPDEC_TRACKINDEX(prog, lay)].m_aot == AOT_USAC)) {
353
45.8k
            usacConfigLengthPrev =
354
45.8k
                (UINT)(pAsc[TPDEC_TRACKINDEX(prog, lay)]
355
45.8k
                           .m_sc.m_usacConfig.UsacConfigBits +
356
45.8k
                       7) >>
357
45.8k
                3; /* store previous USAC config length */
358
45.8k
            if (usacConfigLengthPrev > TP_USAC_MAX_CONFIG_LEN) {
359
0
              ErrorStatus = TRANSPORTDEC_PARSE_ERROR;
360
0
              goto bail;
361
0
            }
362
45.8k
            FDKmemclear(usacConfigPrev, TP_USAC_MAX_CONFIG_LEN);
363
45.8k
            FDKmemcpy(
364
45.8k
                usacConfigPrev,
365
45.8k
                &pAsc[TPDEC_TRACKINDEX(prog, lay)].m_sc.m_usacConfig.UsacConfig,
366
45.8k
                usacConfigLengthPrev); /* store previous USAC config */
367
45.8k
          }
368
892k
          if (pLatmDemux->m_AudioMuxVersion == 1) {
369
47.6k
            FDK_BITSTREAM tmpBs;
370
47.6k
            INT ascLen = 0;
371
47.6k
            ascLen = CLatmDemux_GetValue(bs);
372
            /* The ascLen could be wrong, so check if validBits<=bufBits*/
373
47.6k
            if (ascLen < 0 || ascLen > (INT)FDKgetValidBits(bs)) {
374
2.97k
              ErrorStatus = TRANSPORTDEC_PARSE_ERROR;
375
2.97k
              goto bail;
376
2.97k
            }
377
44.7k
            FDKsyncCache(bs);
378
44.7k
            tmpBs = *bs;
379
44.7k
            tmpBs.hBitBuf.ValidBits = ascLen;
380
381
            /* Read ASC */
382
44.7k
            if (pLatmDemux->applyAsc) {
383
42.7k
              if (TRANSPORTDEC_OK !=
384
42.7k
                  (ErrorStatus = AudioSpecificConfig_Parse(
385
42.7k
                       &pAsc[TPDEC_TRACKINDEX(prog, lay)], &tmpBs, 1,
386
42.7k
                       pTpDecCallbacks, configMode, configChanged,
387
42.7k
                       AOT_NULL_OBJECT)))
388
5.44k
                goto bail;
389
42.7k
            } else {
390
2.01k
              if (TRANSPORTDEC_OK !=
391
2.01k
                  (ErrorStatus = AudioSpecificConfig_Parse(
392
2.01k
                       pAscDummy, &tmpBs, 1, pTpDecCallbacks, configMode,
393
2.01k
                       configChanged, AOT_NULL_OBJECT)))
394
325
                goto bail;
395
2.01k
            }
396
397
            /* The field p_linfo->m_ascLen could be wrong, so check if */
398
38.9k
            if (0 > (INT)FDKgetValidBits(&tmpBs)) {
399
22.0k
              ErrorStatus = TRANSPORTDEC_PARSE_ERROR;
400
22.0k
              goto bail;
401
22.0k
            }
402
16.9k
            FDKpushFor(bs, ascLen); /* position bitstream after ASC */
403
844k
          } else {
404
            /* Read ASC */
405
844k
            if (pLatmDemux->applyAsc) {
406
731k
              if (TRANSPORTDEC_OK != (ErrorStatus = AudioSpecificConfig_Parse(
407
731k
                                          &pAsc[TPDEC_TRACKINDEX(prog, lay)],
408
731k
                                          bs, 0, pTpDecCallbacks, configMode,
409
731k
                                          configChanged, AOT_NULL_OBJECT)))
410
105k
                goto bail;
411
731k
            } else {
412
113k
              if (TRANSPORTDEC_OK !=
413
113k
                  (ErrorStatus = AudioSpecificConfig_Parse(
414
113k
                       pAscDummy, bs, 0, pTpDecCallbacks, configMode,
415
113k
                       configChanged, AOT_NULL_OBJECT)))
416
1.68k
                goto bail;
417
113k
            }
418
844k
          }
419
754k
          if (!pLatmDemux->applyAsc) {
420
113k
            updateConfig[TPDEC_TRACKINDEX(prog, lay)] = 0;
421
640k
          } else {
422
640k
            updateConfig[TPDEC_TRACKINDEX(prog, lay)] = 1;
423
640k
          }
424
425
754k
          if (!pLatmDemux->applyAsc) {
426
113k
            if (pAscDummy[TPDEC_TRACKINDEX(prog, lay)].m_aot ==
427
113k
                AOT_USAC) { /* flush in case SMC has changed */
428
45.1k
              const UINT usacConfigLength =
429
45.1k
                  (UINT)(pAscDummy->m_sc.m_usacConfig.UsacConfigBits + 7) >> 3;
430
45.1k
              if (usacConfigLength > TP_USAC_MAX_CONFIG_LEN) {
431
0
                ErrorStatus = TRANSPORTDEC_PARSE_ERROR;
432
0
                goto bail;
433
0
              }
434
45.1k
              if (usacConfigLength != usacConfigLengthPrev) {
435
1.12k
                FDKmemclear(&pAsc[TPDEC_TRACKINDEX(prog, lay)]
436
1.12k
                                 .m_sc.m_usacConfig.UsacConfig,
437
1.12k
                            TP_USAC_MAX_CONFIG_LEN);
438
1.12k
                FDKmemcpy(&pAsc[TPDEC_TRACKINDEX(prog, lay)]
439
1.12k
                               .m_sc.m_usacConfig.UsacConfig,
440
1.12k
                          &pAscDummy->m_sc.m_usacConfig.UsacConfig,
441
1.12k
                          usacConfigLength); /* store new USAC config */
442
1.12k
                pAsc[TPDEC_TRACKINDEX(prog, lay)]
443
1.12k
                    .m_sc.m_usacConfig.UsacConfigBits =
444
1.12k
                    pAscDummy->m_sc.m_usacConfig.UsacConfigBits;
445
1.12k
                pLatmDemux->usacExplicitCfgChanged = 1;
446
44.0k
              } else {
447
44.0k
                if (FDKmemcmp(usacConfigPrev,
448
44.0k
                              pAscDummy->m_sc.m_usacConfig.UsacConfig,
449
44.0k
                              usacConfigLengthPrev)) {
450
27.0k
                  FDKmemclear(&pAsc[TPDEC_TRACKINDEX(prog, lay)]
451
27.0k
                                   .m_sc.m_usacConfig.UsacConfig,
452
27.0k
                              TP_USAC_MAX_CONFIG_LEN);
453
27.0k
                  FDKmemcpy(&pAsc[TPDEC_TRACKINDEX(prog, lay)]
454
27.0k
                                 .m_sc.m_usacConfig.UsacConfig,
455
27.0k
                            &pAscDummy->m_sc.m_usacConfig.UsacConfig,
456
27.0k
                            usacConfigLength); /* store new USAC config */
457
27.0k
                  pAsc[TPDEC_TRACKINDEX(prog, lay)]
458
27.0k
                      .m_sc.m_usacConfig.UsacConfigBits =
459
27.0k
                      pAscDummy->m_sc.m_usacConfig.UsacConfigBits;
460
27.0k
                  pLatmDemux->usacExplicitCfgChanged = 1;
461
27.0k
                }
462
44.0k
              }
463
464
45.1k
              if (pAscDummy[TPDEC_TRACKINDEX(prog, lay)]
465
45.1k
                      .m_sc.m_usacConfig.m_usacNumElements) {
466
45.1k
                if (pAscDummy[TPDEC_TRACKINDEX(prog, lay)]
467
45.1k
                        .m_sc.m_usacConfig.element[0]
468
45.1k
                        .extElement.usacExtElementHasAudioPreRoll) {
469
539
                  pLatmDemux->newCfgHasAudioPreRoll =
470
539
                      1; /* if dummy parsed cfg has audioPreRoll we first flush
471
                            before applying new cfg */
472
539
                }
473
45.1k
              }
474
45.1k
            }
475
113k
          }
476
754k
        }
477
478
754k
        p_linfo->m_frameLengthType = FDKreadBits(bs, 3);
479
754k
        switch (p_linfo->m_frameLengthType) {
480
710k
          case 0:
481
710k
            p_linfo->m_bufferFullness = FDKreadBits(bs, 8);
482
483
710k
            if (!pLatmDemux->m_allStreamsSameTimeFraming) {
484
217k
              if ((lay > 0) &&
485
0
                  (pAsc[TPDEC_TRACKINDEX(prog, lay)].m_aot == AOT_AAC_SCAL ||
486
0
                   pAsc[TPDEC_TRACKINDEX(prog, lay)].m_aot ==
487
0
                       AOT_ER_AAC_SCAL) &&
488
0
                  (pAsc[TPDEC_TRACKINDEX(prog, lay - 1)].m_aot == AOT_CELP ||
489
0
                   pAsc[TPDEC_TRACKINDEX(prog, lay - 1)].m_aot ==
490
0
                       AOT_ER_CELP)) { /* The layer maybe
491
                                          ignored later so
492
                                          read it anyway: */
493
0
                /* coreFrameOffset = */ FDKreadBits(bs, 6);
494
0
              }
495
217k
            }
496
710k
            break;
497
29.6k
          case 1:
498
29.6k
            p_linfo->m_frameLengthInBits = FDKreadBits(bs, 9);
499
29.6k
            break;
500
1.08k
          case 3:
501
2.40k
          case 4:
502
3.32k
          case 5:
503
            /* CELP */
504
5.70k
          case 6:
505
11.3k
          case 7:
506
            /* HVXC */
507
14.0k
          default:
508
14.0k
            ErrorStatus = TRANSPORTDEC_PARSE_ERROR;
509
14.0k
            goto bail;
510
754k
        } /* switch framelengthtype*/
511
512
754k
      } /* layer loop */
513
892k
    }   /* prog loop */
514
515
740k
    pLatmDemux->m_otherDataPresent = FDKreadBits(bs, 1);
516
740k
    pLatmDemux->m_otherDataLength = 0;
517
518
740k
    if (pLatmDemux->m_otherDataPresent) {
519
224k
      if (pLatmDemux->m_AudioMuxVersion == 1) {
520
1.91k
        pLatmDemux->m_otherDataLength = CLatmDemux_GetValue(bs);
521
222k
      } else {
522
222k
        int otherDataLenEsc = 0;
523
384k
        do {
524
384k
          pLatmDemux->m_otherDataLength <<= 8;  // *= 256
525
384k
          otherDataLenEsc = FDKreadBits(bs, 1);
526
384k
          pLatmDemux->m_otherDataLength += FDKreadBits(bs, 8);
527
384k
        } while (otherDataLenEsc);
528
222k
      }
529
224k
      if (pLatmDemux->m_audioMuxLengthBytes <
530
224k
          (pLatmDemux->m_otherDataLength >> 3)) {
531
4.36k
        ErrorStatus = TRANSPORTDEC_PARSE_ERROR;
532
4.36k
        goto bail;
533
4.36k
      }
534
224k
    }
535
536
735k
    pLatmDemux->m_crcCheckPresent = FDKreadBits(bs, 1);
537
538
735k
    if (pLatmDemux->m_crcCheckPresent) {
539
356k
      FDKreadBits(bs, 8);
540
356k
    }
541
542
735k
  } else {
543
    /* audioMuxVersionA > 0 is reserved for future extensions */
544
1.49k
    ErrorStatus = TRANSPORTDEC_UNSUPPORTED_FORMAT;
545
1.49k
  }
546
547
  /* Configure source decoder: */
548
737k
  if (ErrorStatus == TRANSPORTDEC_OK) {
549
735k
    UINT prog;
550
1.45M
    for (prog = 0; prog < pLatmDemux->m_numProgram; prog++) {
551
735k
      UINT lay;
552
1.45M
      for (lay = 0; lay < pLatmDemux->m_numLayer[prog]; lay++) {
553
735k
        if (updateConfig[TPDEC_TRACKINDEX(prog, lay)] != 0) {
554
623k
          int cbError;
555
623k
          cbError = pTpDecCallbacks->cbUpdateConfig(
556
623k
              pTpDecCallbacks->cbUpdateConfigData,
557
623k
              &pAsc[TPDEC_TRACKINDEX(prog, lay)],
558
623k
              pAsc[TPDEC_TRACKINDEX(prog, lay)].configMode,
559
623k
              &pAsc[TPDEC_TRACKINDEX(prog, lay)].AacConfigChanged);
560
623k
          if (cbError == TRANSPORTDEC_NEED_TO_RESTART) {
561
0
            *pfConfigFound = 0;
562
0
            ErrorStatus = TRANSPORTDEC_NEED_TO_RESTART;
563
0
            goto bail;
564
0
          }
565
623k
          if (cbError != 0) {
566
16.6k
            *pfConfigFound = 0;
567
16.6k
            if (lay == 0) {
568
16.6k
              ErrorStatus = TRANSPORTDEC_SYNC_ERROR;
569
16.6k
              goto bail;
570
16.6k
            }
571
606k
          } else {
572
606k
            *pfConfigFound = 1;
573
606k
          }
574
623k
        } else {
575
112k
          *pfConfigFound = 1;
576
112k
        }
577
735k
      }
578
735k
    }
579
735k
  }
580
581
925k
bail:
582
925k
  if (ErrorStatus != TRANSPORTDEC_OK) {
583
206k
    UCHAR applyAsc = pLatmDemux->applyAsc;
584
206k
    FDKmemclear(pLatmDemux, sizeof(CLatmDemux)); /* reset structure */
585
206k
    pLatmDemux->applyAsc = applyAsc;
586
719k
  } else {
587
    /* no error and config parsing is finished */
588
719k
    if (configMode == AC_CM_ALLOC_MEM) pLatmDemux->applyAsc = 0;
589
719k
  }
590
591
925k
  return (ErrorStatus);
592
737k
}
593
594
465k
static int CLatmDemux_ReadAuChunkLengthInfo(HANDLE_FDK_BITSTREAM bs) {
595
465k
  int len = 0, tmp = 255;
596
465k
  int validBytes = (int)FDKgetValidBits(bs) >> 3;
597
598
995k
  while (tmp == 255 && validBytes-- > 0) {
599
529k
    tmp = (int)FDKreadBits(bs, 8);
600
529k
    len += tmp;
601
529k
  }
602
603
465k
  return ((tmp == 255) ? -1 : (len << 3));
604
465k
}
605
606
TRANSPORTDEC_ERROR CLatmDemux_ReadPayloadLengthInfo(HANDLE_FDK_BITSTREAM bs,
607
570k
                                                    CLatmDemux *pLatmDemux) {
608
570k
  TRANSPORTDEC_ERROR ErrorStatus = TRANSPORTDEC_OK;
609
570k
  int totalPayloadBits = 0;
610
611
570k
  if (pLatmDemux->m_allStreamsSameTimeFraming == 1) {
612
474k
    FDK_ASSERT(pLatmDemux->m_numProgram <= LATM_MAX_PROG);
613
937k
    for (UINT prog = 0; prog < pLatmDemux->m_numProgram; prog++) {
614
474k
      FDK_ASSERT(pLatmDemux->m_numLayer[prog] <= LATM_MAX_LAYER);
615
937k
      for (UINT lay = 0; lay < pLatmDemux->m_numLayer[prog]; lay++) {
616
474k
        LATM_LAYER_INFO *p_linfo = &pLatmDemux->m_linfo[prog][lay];
617
474k
        int auChunkLengthInfo = 0;
618
619
474k
        switch (p_linfo->m_frameLengthType) {
620
465k
          case 0:
621
465k
            auChunkLengthInfo = CLatmDemux_ReadAuChunkLengthInfo(bs);
622
465k
            if (auChunkLengthInfo >= 0) {
623
463k
              p_linfo->m_frameLengthInBits = (UINT)auChunkLengthInfo;
624
463k
              totalPayloadBits += p_linfo->m_frameLengthInBits;
625
463k
            } else {
626
2.73k
              return TRANSPORTDEC_PARSE_ERROR;
627
2.73k
            }
628
463k
            break;
629
463k
          case 3:
630
0
          case 5:
631
0
          case 7:
632
8.67k
          default:
633
8.67k
            return TRANSPORTDEC_PARSE_ERROR;  // AAC_DEC_LATM_INVALIDFRAMELENGTHTYPE;
634
474k
        }
635
474k
      }
636
474k
    }
637
474k
  } else {
638
95.7k
    ErrorStatus = TRANSPORTDEC_PARSE_ERROR;  // AAC_DEC_LATM_TIMEFRAMING;
639
95.7k
  }
640
558k
  if (pLatmDemux->m_audioMuxLengthBytes > (UINT)0 &&
641
536k
      totalPayloadBits > (int)pLatmDemux->m_audioMuxLengthBytes * 8) {
642
63.1k
    return TRANSPORTDEC_PARSE_ERROR;
643
63.1k
  }
644
645
495k
  return (ErrorStatus);
646
558k
}
647
648
UINT CLatmDemux_GetFrameLengthInBits(CLatmDemux *pLatmDemux, const UINT prog,
649
373k
                                     const UINT layer) {
650
373k
  UINT nFrameLenBits = 0;
651
373k
  if (prog < pLatmDemux->m_numProgram) {
652
373k
    if (layer < pLatmDemux->m_numLayer[prog]) {
653
373k
      nFrameLenBits = pLatmDemux->m_linfo[prog][layer].m_frameLengthInBits;
654
373k
    }
655
373k
  }
656
373k
  return nFrameLenBits;
657
373k
}
658
659
9.52k
UINT CLatmDemux_GetOtherDataPresentFlag(CLatmDemux *pLatmDemux) {
660
9.52k
  return pLatmDemux->m_otherDataPresent ? 1 : 0;
661
9.52k
}
662
663
3.58k
UINT CLatmDemux_GetOtherDataLength(CLatmDemux *pLatmDemux) {
664
3.58k
  return pLatmDemux->m_otherDataLength;
665
3.58k
}
666
667
135k
UINT CLatmDemux_GetNrOfSubFrames(CLatmDemux *pLatmDemux) {
668
135k
  return pLatmDemux->m_noSubFrames;
669
135k
}
670
671
747k
UINT CLatmDemux_GetNrOfLayers(CLatmDemux *pLatmDemux, const UINT prog) {
672
747k
  UINT numLayer = 0;
673
747k
  if (prog < pLatmDemux->m_numProgram) {
674
747k
    numLayer = pLatmDemux->m_numLayer[prog];
675
747k
  }
676
747k
  return numLayer;
677
747k
}