1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
|
/* Copyright (c) MediaArea.net SARL. All Rights Reserved.
*
* Use of this source code is governed by a BSD-style license that can
* be found in the License.html file in the root of the source tree.
*/
//+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
//
// Information about AAC files
//
//+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
//---------------------------------------------------------------------------
#ifndef MediaInfo_File_AacH
#define MediaInfo_File_AacH
//---------------------------------------------------------------------------
//---------------------------------------------------------------------------
#ifdef MEDIAINFO_MPEG4_YES
#include "MediaInfo/Multiple/File_Mpeg4_Descriptors.h"
#endif
#include "MediaInfo/Tag/File__Tags.h"
#include "MediaInfo/Audio/File_Usac.h"
//---------------------------------------------------------------------------
namespace MediaInfoLib
{
//---------------------------------------------------------------------------
enum Aac_OutputChannel
{
//USAC
CH_M_L030,
CH_M_R030,
CH_M_000,
CH_LFE,
CH_M_L110,
CH_M_R110,
CH_M_L022,
CH_M_R022,
CH_M_L135,
CH_M_R135,
CH_M_180,
CH_M_LSD,
CH_M_RSD,
CH_M_L090,
CH_M_R090,
CH_M_L060,
CH_M_R060,
CH_U_L030,
CH_U_R030,
CH_U_000,
CH_U_L135,
CH_U_R135,
CH_U_180,
CH_U_L090,
CH_U_R090,
CH_T_000,
CH_LFE2,
CH_L_L045,
CH_L_R045,
CH_L_000,
CH_U_L110,
CH_U_R110,
//MPEG-H 3D Audio
CH_U_L045,
CH_U_R045,
CH_M_L045,
CH_M_R045,
CH_LFE3,
CH_M_LSCR,
CH_M_RSCR,
CH_M_LSCH,
CH_M_RSCH,
CH_M_L150,
CH_M_R150,
CH_MAX
};
//***************************************************************************
// Class File_Aac
//***************************************************************************
struct sbr_handler
{
//sbr_header
int8u bs_amp_res[2];
int8u bs_amp_res_FromHeader;
int8u bs_start_freq;
int8u bs_stop_freq;
int8u bs_xover_band;
int8u bs_freq_scale;
int8u bs_alter_scale;
int8u bs_noise_bands;
//sbr_grid
int8u bs_num_env[2];
bool bs_freq_res[2][8];
int8u bs_num_noise[2];
//sbr_dtdf
int8u bs_df_env[2][4];
int8u bs_df_noise[2][2];
//Computed values
int8u num_noise_bands;
int8u num_env_bands[2];
};
struct ps_handler
{
bool enable_iid;
bool enable_icc;
bool enable_ext;
int8u iid_mode;
int8u icc_mode;
};
typedef const int8s (*sbr_huffman)[2];
class File_Aac : public File_Usac, public File__Tags_Helper
{
public :
//In
int64u Frame_Count_Valid;
bool FrameIsAlwaysComplete;
enum mode
{
Mode_Unknown,
Mode_AudioSpecificConfig,
Mode_raw_data_block,
Mode_ADIF,
Mode_ADTS,
Mode_LATM,
};
mode Mode;
void AudioSpecificConfig_OutOfBand(int64s sampling_frequency, int8u audioObjectType=(int8u)-1, bool sbrData=false, bool psData=false, bool sbrPresentFlag=false, bool psPresentFlag=false);
// Conformance
#if MEDIAINFO_CONFORMANCE
int16u SamplingRate;
#endif
//Constructor/Destructor
File_Aac();
~File_Aac();
protected :
//Streams management
void Streams_Accept();
void Streams_Fill();
void Streams_Update();
void Streams_Finish();
//Buffer - File header
bool FileHeader_Begin();
void FileHeader_Parse();
void FileHeader_Parse_ADIF();
void FileHeader_Parse_ADTS();
//Buffer - Global
void Read_Buffer_Continue ();
void Read_Buffer_Continue_AudioSpecificConfig();
void Read_Buffer_Continue_raw_data_block();
//Buffer - Synchro
bool Synchronize();
bool Synchronize_ADTS();
bool Synchronize_LATM();
bool Synched_Test();
bool Synched_Test_ADTS();
bool Synched_Test_LATM();
//Buffer - Demux
#if MEDIAINFO_DEMUX
bool Demux_UnpacketizeContainer_Test();
bool Demux_UnpacketizeContainer_Test_ADTS();
bool Demux_UnpacketizeContainer_Test_LATM();
#endif //MEDIAINFO_DEMUX
//Buffer - Per element
bool Header_Begin();
bool Header_Begin_ADTS();
bool Header_Begin_LATM();
void Header_Parse();
void Header_Parse_ADTS();
void Header_Parse_LATM();
void Data_Parse();
void Data_Parse_ADTS();
void Data_Parse_LATM();
//***********************************************************************
// Elements - Main
//***********************************************************************
//Elements - Interface to MPEG-4 container
void AudioSpecificConfig (size_t End=(size_t)-1);
void GetAudioObjectType (int8u &ObjectType, const char* Name);
//Elements - Multiplex layer
void EPMuxElement ();
void AudioMuxElement ();
void StreamMuxConfig ();
int32u LatmGetValue ();
void PayloadLengthInfo ();
void PayloadMux ();
bool muxConfigPresent;
//Elements - Error protection
void ErrorProtectionSpecificConfig ();
//Elements - MPEG-2 AAC Audio_Data_Interchange_Format, ADIF
void adif_header ();
//Elements - Audio_Data_Transport_Stream frame, ADTS
void adts_frame ();
void adts_fixed_header ();
void adts_variable_header ();
//Temp
int8u numSubFrames;
int8u numProgram;
int8u numLayer;
int8u numChunk;
bool audioMuxVersionA;
int8u streamID[16][8];
int8u progSIndx[128];
int8u laySIndx[128];
int8u progCIndx[128];
int8u layCIndx[128];
int8u frameLengthType[128];
int16u frameLength[128];
int32u MuxSlotLengthBytes[128];
int32u otherDataLenBits;
bool allStreamsSameTimeFraming;
int8u audioObjectType;
int8u extensionAudioObjectType;
int16u frame_length;
int32u extension_sampling_frequency;
bool aacScalefactorDataResilienceFlag;
bool aacSectionDataResilienceFlag;
bool aacSpectralDataResilienceFlag;
int8u num_raw_data_blocks;
bool protection_absent;
int64u FrameSize_Min;
int64u FrameSize_Max;
bool adts_buffer_fullness_Is7FF;
#if MEDIAINFO_ADVANCED
int64u aac_frame_length_Total;
#endif //MEDIAINFO_ADVANCED
#if MEDIAINFO_MACROBLOCKS
int ParseCompletely;
#else //MEDIAINFO_MACROBLOCKS
static constexpr int ParseCompletely=0;
#endif //MEDIAINFO_MACROBLOCKS
//***********************************************************************
// Elements - Speech coding (HVXC)
//***********************************************************************
void HvxcSpecificConfig ();
void HVXCconfig ();
void ErrorResilientHvxcSpecificConfig ();
void ErHVXCconfig ();
//***********************************************************************
// Elements - Speech Coding (CELP)
//***********************************************************************
void CelpSpecificConfig ();
void CelpHeader ();
void ErrorResilientCelpSpecificConfig ();
void ER_SC_CelpHeader ();
//***********************************************************************
// Elements - General Audio (GA)
//***********************************************************************
//Elements - Decoder configuration
void GASpecificConfig ();
void program_config_element ();
//Elements - GA bitstream
void raw_data_block ();
void single_channel_element ();
void channel_pair_element ();
void ics_info ();
void pulse_data ();
void coupling_channel_element ();
void lfe_channel_element ();
void data_stream_element ();
void fill_element (int8u old_id);
void gain_control_data ();
//Elements - Subsidiary
void individual_channel_stream (bool common_window, bool scale_flag);
void section_data ();
void scale_factor_data ();
void tns_data ();
void ltp_data ();
void spectral_data ();
void extension_payload (size_t End, int8u id_aac);
void dynamic_range_info ();
void sac_extension_data (size_t End);
//Elements - SBR
void sbr_extension_data (size_t End, int8u id_aac, bool crc_flag);
void sbr_header ();
void sbr_data (int8u id_aac);
void sbr_single_channel_element ();
void sbr_channel_pair_element ();
void sbr_grid (bool ch);
void sbr_dtdf (bool ch);
void sbr_invf (bool ch);
void sbr_envelope (bool ch, bool bs_coupling);
void sbr_noise (bool ch, bool bs_coupling);
void sbr_sinusoidal_coding (bool ch);
int16u sbr_huff_dec (const sbr_huffman& Table, const char* Name);
//Elements - SBR - PS
void ps_data (size_t End);
//Elements - Perceptual noise substitution (PNS)
bool is_noise (size_t group, size_t sfb);
int is_intensity (size_t group, size_t sfb);
//Elements - Enhanced Low Delay Codec
void ELDSpecificConfig ();
void ld_sbr_header ();
//Helpers
void hcod (int8u sect_cb, const char* Name);
void hcod_sf (const char* Name);
void hcod_binary (int8u CodeBook, int8s* Values, int8u Values_Count);
void hcod_2step (int8u CodeBook, int8s* Values, int8u Values_Count);
//Temp - channel_pair_element
bool common_window;
//Temp - ics_info
int8u window_sequence;
int8u max_sfb;
int8u scale_factor_grouping;
int8u num_windows;
int8u num_window_groups;
int8u window_group_length [8];
int16u sect_sfb_offset [8][1024];
int16u swb_offset [64];
int8u sfb_cb [8][64];
int8u num_swb;
//Temp - section_data
int8u num_sec [8];
int8u sect_cb [8][64];
int16u sect_start [8][64];
int16u sect_end [8][64];
//Temp - ltp_data
int16u ltp_lag;
//Temp - SBR
vector<sbr_handler*> sbrs;
sbr_handler* sbr;
//Temp - PS
vector<ps_handler*> pss;
ps_handler* ps;
//Temp - Position
size_t raw_data_block_Pos;
size_t ChannelPos_Temp;
size_t ChannelCount_Temp;
//***********************************************************************
// Elements - Structured Audio (SA)
//***********************************************************************
void StructuredAudioSpecificConfig ();
//***********************************************************************
// Elements - Text to Speech Interface (TTSI)
//***********************************************************************
void TTSSpecificConfig ();
//***********************************************************************
// Elements - Parametric Audio (HILN)
//***********************************************************************
void HILNconfig ();
void HILNenexConfig ();
void ParametricSpecificConfig ();
void PARAconfig ();
//***********************************************************************
// Elements - Technical description of parametric coding for high quality audio
//***********************************************************************
void SSCSpecificConfig ();
//***********************************************************************
// Elements - MPEG-1/2 Audio
//***********************************************************************
void MPEG_1_2_SpecificConfig ();
//***********************************************************************
// Elements - Technical description of lossless coding of oversampled audio
//***********************************************************************
void DSTSpecificConfig ();
//***********************************************************************
// Elements - Audio Lossless
//***********************************************************************
void ALSSpecificConfig ();
//***********************************************************************
// Elements - Scalable lossless
//***********************************************************************
void SLSSpecificConfig ();
//***********************************************************************
// Temp
//***********************************************************************
std::map<std::string, Ztring> Infos_General;
std::map<std::string, Ztring> Infos;
std::map<std::string, Ztring> Infos_AudioSpecificConfig;
bool CanFill;
private :
void FillInfosHEAACv2(const Ztring& Format_Settings);
};
} //NameSpace
#endif
|