-
Notifications
You must be signed in to change notification settings - Fork 0
/
fragmentcollector_hls.cpp
executable file
·7610 lines (7165 loc) · 246 KB
/
fragmentcollector_hls.cpp
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
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
/*
* If not stated otherwise in this file or this component's license file the
* following copyright and licenses apply:
*
* Copyright 2018 RDK Management
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
/**
* \file fragmentcollector_hls.cpp
*
* Fragment Collect file includes class implementation for handling
* HLS streaming of AAMP player.
* Various functionality like manifest download , fragment collection,
* DRM initialization , synchronizing audio / video media of the stream,
* trick play handling etc are handled in this file .
*
*/
#include "iso639map.h"
#include "fragmentcollector_hls.h"
#include "_base64.h"
#include "base16.h"
#include <algorithm> // for std::min
#include <stdio.h>
#include <assert.h>
#include <string.h>
#include <stdlib.h>
#include <unistd.h>
#include "priv_aamp.h"
#include <pthread.h>
#include <signal.h>
#include <semaphore.h>
#include <math.h>
#include <stdarg.h>
#include <ctype.h>
#include <errno.h>
#include <openssl/sha.h>
#include <set>
#include <math.h>
#include <vector>
#include <string>
#include "HlsDrmBase.h"
#include "AampCacheHandler.h"
#ifdef USE_OPENCDM
#include "AampHlsDrmSessionManager.h"
#endif
#ifdef AAMP_VANILLA_AES_SUPPORT
#include "aamp_aes.h"
#endif
#include "webvttParser.h"
#include "SubtecFactory.hpp"
#include "tsprocessor.h"
#include "isobmffprocessor.h"
#include "AampUtils.h"
#ifdef AAMP_HLS_DRM
#include "AampDRMSessionManager.h"
#endif
#include "AampVanillaDrmHelper.h"
#ifdef AAMP_CC_ENABLED
#include "AampCCManager.h"
#endif
//#define TRACE // compile-time optional noisy debug output
/**
* @struct DrmMetadata
* @brief AVE drm metadata extracted from EXT-X-FAXS-CM
*/
struct DrmMetadata
{ // from EXT-X-FAXS-CM
unsigned char * metadataPtr;
size_t metadataSize;
};
struct DrmMetadataNode
{
DrmMetadata metaData;
int deferredInterval ;
long long drmKeyReqTime;
char* sha1Hash;
};
#define DRM_SHA1_HASH_LEN 40
static const int DEFAULT_STREAM_WIDTH = 720;
static const int DEFAULT_STREAM_HEIGHT = 576;
static const double DEFAULT_STREAM_FRAMERATE = 25.0;
// checks if current state is going to use IFRAME ( Fragment/Playlist )
#define IS_FOR_IFRAME(rate, type) ((type == eTRACK_VIDEO) && (rate != AAMP_NORMAL_PLAY_RATE))
#ifdef AAMP_HLS_DRM
extern std::shared_ptr<DrmSessionParams> ProcessContentProtection(PrivateInstanceAAMP *aamp, std::string attrName);
extern int SpawnDRMLicenseAcquireThread(PrivateInstanceAAMP *aamp, std::shared_ptr<DrmSessionParams> drmData);
extern void ReleaseDRMLicenseAcquireThread(PrivateInstanceAAMP *aamp);
#endif
#define UseProgramDateTimeIfAvailable() (ISCONFIGSET(eAAMPConfig_HLSAVTrackSyncUsingStartTime) || aamp->mIsVSS)
/// Variable initialization for media profiler buckets
static const ProfilerBucketType mediaTrackBucketTypes[AAMP_TRACK_COUNT] =
{ PROFILE_BUCKET_FRAGMENT_VIDEO, PROFILE_BUCKET_FRAGMENT_AUDIO, PROFILE_BUCKET_FRAGMENT_SUBTITLE, PROFILE_BUCKET_FRAGMENT_AUXILIARY };
/// Variable initialization for media decrypt buckets
static const ProfilerBucketType mediaTrackDecryptBucketTypes[AAMP_DRM_CURL_COUNT] =
{ PROFILE_BUCKET_DECRYPT_VIDEO, PROFILE_BUCKET_DECRYPT_AUDIO, PROFILE_BUCKET_DECRYPT_SUBTITLE, PROFILE_BUCKET_DECRYPT_AUXILIARY};
static size_t FindLineLength(const char* ptr);
/***************************************************************************
* @fn startswith
* @brief Function to check if string is start of main string
*
* @param pstring[in] Main string
* @param prefix[in] Sub string to check
* @return bool true/false
***************************************************************************/
static bool startswith(const char **pstring, const char *prefix)
{
const char *string = *pstring;
for (;;)
{
char c = *prefix++;
if (c == 0)
{
*pstring = string;
return true;
}
if (*string++ != c)
{
return false;
}
}
}
/***************************************************************************
* @fn startswith
* @brief Function to check if string is start of main string
*
* @param pstring[in] Main string
* @param prefix[in] Sub string to check
* @return bool true/false
***************************************************************************/
static bool startswith(char **pstring, const char *prefix)
{
char *string = *pstring;
for (;;)
{
char c = *prefix++;
if (c == 0)
{
*pstring = string;
return true;
}
if (*string++ != c)
{
return false;
}
}
}
/***************************************************************************
* @fn AttributeNameMatch
* @brief Function to check if attribute name matches
*
* @param attrNamePtr[in] Attribute Name pointer
* @param targetAttrNameCString[in] string to compare
* @return bool true/false
***************************************************************************/
static bool AttributeNameMatch(const char *attrNamePtr, const char *targetAttrNameCString)
{
while (*targetAttrNameCString)
{
if (*targetAttrNameCString++ != *attrNamePtr++)
{
return false;
}
}
return *attrNamePtr == '=';
}
/***************************************************************************
* @fn SubStringMatch
* @brief Function to check if substring present in main string
*
* @param srcStart[in] Start of string pointer
* @param srcFin[in] End of string pointer (length = srcFin - srcStart)
* @param cstring[in] string to compare
* @return bool true/false
***************************************************************************/
static bool SubStringMatch(const char *srcStart, const char *srcFin, const char *cstring)
{
while (srcStart <= srcFin)
{
char c = *cstring++;
if (c == 0)
{
return true;
}
if (*srcStart != c)
{
break;
}
srcStart++;
}
return false;
}
/***************************************************************************
* @fn GetAttributeValueString
* @brief convert quoted string to NUL-terminated C-string, stripping quotes
*
* @param valuePtr[in] quoted string, or string starting with NONE - not nul-terminated; note that valuePtr may be modified in place
* @param fin[in] pointer to first character past end of string
* @return char * read-only NUL-terminated string; will normally point to memory within valuePtr
**************************************************************************/
static const char * GetAttributeValueString(char *valuePtr, char *fin)
{
const char *rc = NULL;
if (*valuePtr == '\"')
{
valuePtr++; // skip begin-quote
rc = valuePtr;
fin--;
if( *fin!='\"' )
{
AAMPLOG_WARN( "quoted-string missing end-quote:%s",valuePtr );
}
*fin = 0x00; // replace end-quote with NUL-terminator
}
else
{ // per specification, some attributes (CLOSED-CAPTIONS) may be quoted-string or NONE
rc = "NONE";
if( memcmp(valuePtr,"NONE",4) !=0 )
{
AAMPLOG_WARN("GetAttributeValueString input neither quoted string nor NONE");
}
}
return rc;
}
/***************************************************************************
* @fn ParseKeyAttributeCallback
* @brief Callback function to decode Key and attribute
*
* @param attrName[in] input string
* @param delimEqual[in] delimiter string
* @param fin[in] string end pointer
* @param arg[out] TrackState pointer for storage
* @return void
***************************************************************************/
static void ParseKeyAttributeCallback(char *attrName, char *delimEqual, char *fin, void* arg)
{
TrackState *ts = (TrackState *)arg;
char *valuePtr = delimEqual + 1;
if (AttributeNameMatch(attrName, "METHOD"))
{
if (SubStringMatch(valuePtr, fin, "NONE"))
{ // used by DAI
if(ts->fragmentEncrypted)
{
if (!ts->mIndexingInProgress)
{
AAMPLOG_WARN("Track %s encrypted to clear ", ts->name);
}
ts->fragmentEncrypted = false;
ts->UpdateDrmCMSha1Hash(NULL);
}
ts->mDrmMethod = eDRM_KEY_METHOD_NONE;
}
else if (SubStringMatch(valuePtr, fin, "AES-128"))
{
if(!ts->fragmentEncrypted)
{
if (!ts->mIndexingInProgress)
{
AAMPLOG_WARN("Track %s clear to encrypted ", ts->name);
}
ts->fragmentEncrypted = true;
}
ts->mDrmInfo.method = eMETHOD_AES_128;
ts->mDrmMethod = eDRM_KEY_METHOD_AES_128;
ts->mKeyTagChanged = true;
#ifdef AAMP_HLS_DRM
ts->mDrmInfo.keyFormat = VERIMATRIX_KEY_SYSTEM_STRING;
#endif
}
else if (SubStringMatch(valuePtr, fin, "SAMPLE-AES-CTR"))
{
if(!ts->fragmentEncrypted)
{
if (!ts->mIndexingInProgress)
{
AAMPLOG_WARN("Track %s clear to encrypted", ts->name);
}
ts->fragmentEncrypted = true;
}
ts->mDrmMethod = eDRM_KEY_METHOD_SAMPLE_AES_CTR;
}
else if (SubStringMatch(valuePtr, fin, "SAMPLE-AES"))
{
ts->mDrmMethod = eDRM_KEY_METHOD_SAMPLE_AES;
AAMPLOG_ERR("SAMPLE-AES unsupported");
}
else
{
ts->mDrmMethod = eDRM_KEY_METHOD_UNKNOWN;
AAMPLOG_ERR("unsupported METHOD");
}
}
else if (AttributeNameMatch(attrName, "KEYFORMAT"))
{
const char *keyFormat = GetAttributeValueString(valuePtr, fin);
ts->mDrmInfo.keyFormat = keyFormat;
if (startswith(&keyFormat, "urn:uuid:"))
{
ts->mDrmInfo.systemUUID = keyFormat;
}
}
else if (AttributeNameMatch(attrName, "URI"))
{
const char *uri = GetAttributeValueString(valuePtr, fin);
ts->mDrmInfo.keyURI = uri;
}
else if (AttributeNameMatch(attrName, "IV"))
{ // 16 bytes
const char *srcPtr = valuePtr;
assert(srcPtr[0] == '0');
assert((srcPtr[1] == 'x') || (srcPtr[1] == 'X'));
srcPtr += 2;
ts->UpdateDrmIV(srcPtr);
ts->mDrmInfo.bUseMediaSequenceIV = false;
}
else if (AttributeNameMatch(attrName, "CMSha1Hash"))
{ // 20 bytes; Metadata Hash.
assert(valuePtr[0] == '0');
assert((valuePtr[1] == 'x') || (valuePtr[1] == 'X'));
ts->UpdateDrmCMSha1Hash(valuePtr+2);
}
}
/***************************************************************************
* @fn ParseTileInfCallback
* @brief Callback function to decode Key and attribute
*
* @param attrName[in] input string
* @param delimEqual[in] delimiter string
* @param fin[in] string end pointer
* @param arg[out] Updated TileInfo structure instance
* @return void
***************************************************************************/
static void ParseTileInfCallback(char *attrName, char *delimEqual, char *fin, void* arg)
{
// #EXT-X-TILES:RESOLUTION=416x234,LAYOUT=9x17,DURATION=2.002
TileInfo *var = (TileInfo *)arg;
const char *valuePtr = delimEqual + 1;
if (AttributeNameMatch(attrName, "LAYOUT"))
{
sscanf(valuePtr, "%dx%d", &var->numCols, &var->numRows);
traceprintf("In rows:%d cols:%d",var->numRows, var->numCols);
}
else if (AttributeNameMatch(attrName, "DURATION"))
{
var->posterDuration = atof(valuePtr);
traceprintf("In duration:%f",var->duration);
}
}
/***************************************************************************
* @fn ParseXStartAttributeCallback
* @brief Callback function to decode XStart attributes
*
* @param attrName[in] input string
* @param delimEqual[in] delimiter string
* @param fin[in] string end pointer
* @param arg[out] TrackState pointer for storage
* @return void
***************************************************************************/
static void ParseXStartAttributeCallback(char *attrName, char *delimEqual, char *fin, void* arg)
{
HLSXStart *var = (HLSXStart *)arg;
char *valuePtr = delimEqual + 1;
if (AttributeNameMatch(attrName, "TIME-OFFSET"))
{
var->offset = atof(valuePtr);
}
else if (AttributeNameMatch(attrName, "PRECISE"))
{
// Precise attribute is not considered . By default NO option is selected
var->precise = false;
}
}
/***************************************************************************
* @fn ParseStreamInfCallback
* @brief Callback function to extract stream tag attributes
*
* @param attrName[in] input string
* @param delimEqual[in] delimiter string
* @param fin[in] string end pointer
* @param arg[out] StreamAbstractionAAMP_HLS pointer for storage
* @return void
***************************************************************************/
static void ParseStreamInfCallback(char *attrName, char *delimEqual, char *fin, void* arg)
{
StreamAbstractionAAMP_HLS *context = (StreamAbstractionAAMP_HLS *) arg;
char *valuePtr = delimEqual + 1;
HlsStreamInfo &streamInfo = context->streamInfoStore[context->GetTotalProfileCount()];
if (AttributeNameMatch(attrName, "URI"))
{
streamInfo.uri = GetAttributeValueString(valuePtr, fin);
}
else if (AttributeNameMatch(attrName, "BANDWIDTH"))
{
streamInfo.bandwidthBitsPerSecond = atol(valuePtr);
}
else if (AttributeNameMatch(attrName, "PROGRAM-ID"))
{
streamInfo.program_id = atol(valuePtr);
}
else if (AttributeNameMatch(attrName, "AUDIO"))
{
streamInfo.audio = GetAttributeValueString(valuePtr, fin);
}
else if (AttributeNameMatch(attrName, "CODECS"))
{
streamInfo.codecs = GetAttributeValueString(valuePtr, fin);
}
else if (AttributeNameMatch(attrName, "RESOLUTION"))
{
sscanf(delimEqual + 1, "%dx%d", &streamInfo.resolution.width, &streamInfo.resolution.height);
}
// following are rarely present
else if (AttributeNameMatch(attrName, "AVERAGE-BANDWIDTH"))
{
streamInfo.averageBandwidth = atol(valuePtr);
}
else if (AttributeNameMatch(attrName, "FRAME-RATE"))
{
streamInfo.resolution.framerate = atof(valuePtr);
}
else if (AttributeNameMatch(attrName, "CLOSED-CAPTIONS"))
{
streamInfo.closedCaptions = GetAttributeValueString(valuePtr, fin);
}
else if (AttributeNameMatch(attrName, "SUBTITLES"))
{
streamInfo.subtitles = GetAttributeValueString(valuePtr, fin);
}
else
{
AAMPLOG_INFO("unknown stream inf attribute %s", attrName);
}
}
/***************************************************************************
* @fn ParseMediaAttributeCallback
* @brief Callback function to extract media tag attributes
*
* @param attrName[in] input string
* @param delimEqual[in] delimiter string
* @param fin[in] string end pointer
* @param arg[out] StreamAbstractionAAMP_HLS pointer for storage
* @return void
***************************************************************************/
static void ParseMediaAttributeCallback(char *attrName, char *delimEqual, char *fin, void *arg)
{
StreamAbstractionAAMP_HLS *context = (StreamAbstractionAAMP_HLS *) arg;
char *valuePtr = delimEqual + 1;
MediaInfo &mediaInfo = context->mediaInfoStore[context->GetMediaCount()];
/*
#EXT - X - MEDIA:TYPE = AUDIO, GROUP - ID = "g117600", NAME = "English", LANGUAGE = "en", DEFAULT = YES, AUTOSELECT = YES
#EXT - X - MEDIA:TYPE = AUDIO, GROUP - ID = "g117600", NAME = "Spanish", LANGUAGE = "es", URI = "HBOHD_HD_NAT_15152_0_5939026565177792163/format-hls-track-sap-bandwidth-117600-repid-root_audio103.m3u8"
*/
if (AttributeNameMatch(attrName, "TYPE"))
{
if (SubStringMatch(valuePtr, fin, "AUDIO"))
{
mediaInfo.type = eMEDIATYPE_AUDIO;
}
else if (SubStringMatch(valuePtr, fin, "VIDEO"))
{
mediaInfo.type = eMEDIATYPE_VIDEO;
}
else if (SubStringMatch(valuePtr, fin, "SUBTITLES"))
{
mediaInfo.type = eMEDIATYPE_SUBTITLE;
}
else if (SubStringMatch(valuePtr, fin, "CLOSED-CAPTIONS"))
{
mediaInfo.type = eMEDIATYPE_SUBTITLE;
mediaInfo.isCC = true;
}
}
else if (AttributeNameMatch(attrName, "GROUP-ID"))
{
mediaInfo.group_id = GetAttributeValueString(valuePtr, fin);
}
else if (AttributeNameMatch(attrName, "NAME"))
{
mediaInfo.name = GetAttributeValueString(valuePtr, fin);
}
else if (AttributeNameMatch(attrName, "LANGUAGE"))
{
mediaInfo.language = GetAttributeValueString(valuePtr, fin);
}
else if (AttributeNameMatch(attrName, "AUTOSELECT"))
{
if (SubStringMatch(valuePtr, fin, "YES"))
{
mediaInfo.autoselect = true;
}
}
else if (AttributeNameMatch(attrName, "DEFAULT"))
{
if (SubStringMatch(valuePtr, fin, "YES"))
{
mediaInfo.isDefault = true;
}
}
else if (AttributeNameMatch(attrName, "URI"))
{
mediaInfo.uri = GetAttributeValueString(valuePtr, fin);
}
// rarely present
else if (AttributeNameMatch(attrName, "CHANNELS"))
{
mediaInfo.channels = atoi(valuePtr);
}
else if (AttributeNameMatch(attrName, "INSTREAM-ID"))
{
mediaInfo.instreamID = GetAttributeValueString(valuePtr, fin);
}
else if (AttributeNameMatch(attrName, "FORCED"))
{
if (SubStringMatch(valuePtr, fin, "YES"))
{
mediaInfo.forced = true;
}
}
else if (AttributeNameMatch(attrName, "CHARACTERISTICS"))
{
mediaInfo.characteristics = GetAttributeValueString(valuePtr, fin);
}
else
{
AAMPLOG_WARN("unk MEDIA attr %s", attrName);
}
}
/***************************************************************************
* @fn mystrpbrk
* @brief Function to extract string pointer afer LF
*
* @param ptr[in] input string
* @return char * - Next string pointer
***************************************************************************/
static char *mystrpbrk(char *ptr)
{ // lines are terminated by either a single LF character or a CR character followed by an LF character
char *next = NULL;
char *fin = NULL;
if(ptr != NULL)
{
fin = strchr(ptr, CHAR_LF);
}
if (fin)
{
next = fin + 1;
//handles lines terminated by CR characters followed by LF character
while(fin > ptr && fin[-1] == CHAR_CR)
{
fin--;
}
*fin = 0x00;
}
return next;
}
/**
* @param attrName pointer to HLS Attribute List, as a NUL-terminated CString
*/
/***************************************************************************
* @fn ParseAttrList
* @brief Function to parse attribute list from tag string
*
* @param attrName[in] input string
* @param cb[in] callback function to store parsed attributes
* @param context[in] void pointer context
* @return void
***************************************************************************/
static void ParseAttrList(char *attrName, void(*cb)(char *attrName, char *delim, char *fin, void *context), void *context)
{
char *origParseStr = attrName;
while (*attrName)
{
while (*attrName == ' ')
{ // strip leading whitespace, if any
attrName++;
}
char *delimEqual = attrName;
if(*delimEqual == '\r')
{ // break out on CR
break;
}
while (*delimEqual != '=')
{ // An AttributeName is an unquoted string containing characters from the set [A..Z], [0..9] and '-'
char c = *delimEqual++;
if(c < ' ')
{
// if 0x00, newline, or other unprintable characters, bail out
AAMPLOG_WARN("Missing equal delimiter %s",origParseStr);
return;
}
}
char *fin = delimEqual;
bool inQuote = false;
for (;;)
{
char c = *fin;
if (c == 0)
{ // end of input
break;
}
else if (c == '\"')
{
if (inQuote)
{ // trailing quote
fin++;
break;
}
else
{ // leading quote
inQuote = true;
}
}
else if (c == ',' && !inQuote)
{ // next attribute/value pair
break;
}
fin++;
}
cb(attrName, delimEqual, fin, context);
if (*fin == ',')
{
fin++;
}
attrName = fin;
}
}
/***************************************************************************
* @fn ParseXStartTimeOffset
* @brief Helper function to Parse XStart Tag and attributes
*
* @param arg[in] char *ptr , string with X-START
* @return double offset value
***************************************************************************/
static double ParseXStartTimeOffset(const char* ptr)
{
double retOffSet = 0.0;
double offset = 0.0; //CID:119528 - Intialization
if(ptr)
{
size_t len = FindLineLength(ptr);
char* xstartStr =(char*) malloc (len+1);
if(xstartStr)
{
memcpy(xstartStr,ptr,len);
xstartStr[len]='\0';
HLSXStart xstart;
ParseAttrList(xstartStr, ParseXStartAttributeCallback, &xstart);
free(xstartStr);
retOffSet = xstart.offset;
}
}
return retOffSet;
}
/***************************************************************************
* @fn TrackPLDownloader
* @brief Thread function for download
*
* @param arg[in] void ptr , thread arguement
* @return void ptr
***************************************************************************/
static void * TrackPLDownloader(void *arg)
{
TrackState* ts = (TrackState*)arg;
if(aamp_pthread_setname(pthread_self(), "aampHLSAudPLDL"))
{
AAMPLOG_WARN("aamp_pthread_setname failed");
}
ts->FetchPlaylist();
return NULL;
}
/***************************************************************************
* @fn InitiateDrmProcess
* @brief Function to initiate drm process
*
* @param aamp[in] PrivateInstanceAAMP pointer
*
* @return None
***************************************************************************/
static void InitiateDrmProcess(PrivateInstanceAAMP* aamp){
#ifdef AAMP_HLS_DRM
/** If fragments are CDM encrypted KC **/
if (aamp->fragmentCdmEncrypted && ISCONFIGSET(eAAMPConfig_Fragmp4PrefetchLicense)){
pthread_mutex_lock(&aamp->drmParserMutex);
std::shared_ptr<DrmSessionParams> drmDataToUse = nullptr;
for (int i=0; i < aamp->aesCtrAttrDataList.size(); i++ ){
if (!aamp->aesCtrAttrDataList.at(i).isProcessed){
aamp->aesCtrAttrDataList.at(i).isProcessed = true;
std::shared_ptr<DrmSessionParams> drmData = ProcessContentProtection(aamp, aamp->aesCtrAttrDataList.at(i).attrName);
if (nullptr != drmData){
/* This needs effort from MSO as to what they want to do viz-a-viz preferred DRM, */
drmDataToUse = drmData;
}
}
}
if (drmDataToUse != nullptr)
{
// drmDataToUse will be freed in SpawnDRMLicenseAcquireThread() -> CreateDRMSession()
SpawnDRMLicenseAcquireThread(aamp, drmDataToUse);
}
pthread_mutex_unlock(&aamp->drmParserMutex);
}
#endif
}
void static setupStreamInfo(HlsStreamInfo & streamInfo)
{
streamInfo.resolution.width = DEFAULT_STREAM_WIDTH;
streamInfo.resolution.height = DEFAULT_STREAM_HEIGHT;
streamInfo.resolution.framerate = DEFAULT_STREAM_FRAMERATE;
}
/**
* @brief Function to parse main manifest
*/
AAMPStatusType StreamAbstractionAAMP_HLS::ParseMainManifest()
{
int vProfileCount, iFrameCount , lineNum;
AAMPStatusType retval = eAAMPSTATUS_OK;
char* ptr = mainManifest.ptr;
mMediaCount = 0;
mProfileCount = 0;
vProfileCount = iFrameCount = lineNum = 0;
aamp->mhAbrManager.clearProfiles();
bool useavgbw = ISCONFIGSET(eAAMPConfig_AvgBWForABR);
streamInfoStore.clear();
mediaInfoStore.clear();
while (ptr)
{
char *next = mystrpbrk(ptr);
if (*ptr)
{
if (startswith(&ptr, "#EXT"))
{
if (startswith(&ptr, "-X-I-FRAME-STREAM-INF:"))
{
streamInfoStore.emplace_back(HlsStreamInfo{});
HlsStreamInfo &streamInfo = streamInfoStore[mProfileCount];
ParseAttrList(ptr, ParseStreamInfCallback, this);
if (streamInfo.uri == NULL)
{ // uri on following line
streamInfo.uri = next;
next = mystrpbrk(next);
}
if(streamInfo.averageBandwidth !=0 && useavgbw)
{
streamInfo.bandwidthBitsPerSecond = streamInfo.averageBandwidth;
}
streamInfo.isIframeTrack = true;
streamInfo.enabled = false;
iFrameCount++;
mProfileCount++;
mIframeAvailable = true;
}
else if (startswith(&ptr, "-X-IMAGE-STREAM-INF:"))
{
streamInfoStore.emplace_back(HlsStreamInfo{});
HlsStreamInfo &streamInfo = streamInfoStore[mProfileCount];
ParseAttrList(ptr, ParseStreamInfCallback, this);
if (streamInfo.uri == NULL)
{ // uri on following line
streamInfo.uri = next;
next = mystrpbrk(next);
}
if(streamInfo.averageBandwidth !=0 && useavgbw)
{
streamInfo.bandwidthBitsPerSecond = streamInfo.averageBandwidth;
}
streamInfo.isIframeTrack = true;
streamInfo.enabled = false;
mProfileCount++;
}
else if (startswith(&ptr, "-X-STREAM-INF:"))
{
streamInfoStore.emplace_back(HlsStreamInfo{});
HlsStreamInfo &streamInfo = streamInfoStore[mProfileCount];
setupStreamInfo(streamInfo);
ParseAttrList(ptr, ParseStreamInfCallback, this);
if (streamInfo.uri == NULL)
{ // uri on following line
streamInfo.uri = next;
next = mystrpbrk(next);
}
if(streamInfo.averageBandwidth!=0 && useavgbw)
{
streamInfo.bandwidthBitsPerSecond = streamInfo.averageBandwidth;
}
const FormatMap *map = GetAudioFormatForCodec(streamInfo.codecs);
if( map )
{
streamInfo.audioFormat = map->format;
}
else
{
streamInfo.audioFormat = FORMAT_UNKNOWN;
}
streamInfo.enabled = false;
mProfileCount++;
vProfileCount++;
}
else if (startswith(&ptr, "-X-MEDIA:"))
{
mediaInfoStore.emplace_back(MediaInfo{});
ParseAttrList(ptr, ParseMediaAttributeCallback, this);
if(!mediaInfoStore[mMediaCount].language)
{ // handle non-compliant manifest missing language attribute
mediaInfoStore[mMediaCount].language = mediaInfoStore[mMediaCount].name;
}
if (mediaInfoStore[mMediaCount].type == eMEDIATYPE_AUDIO && mediaInfoStore[mMediaCount].language)
{
mLangList.insert(GetLanguageCode(mMediaCount));
}
mMediaCount++;
}
else if (startswith(&ptr, "-X-VERSION:"))
{
// followed by integer
}
else if (startswith(&ptr, "-X-INDEPENDENT-SEGMENTS"))
{
// followed by integer
}
else if (startswith(&ptr, "-X-FAXS-CM"))
{
// AVE DRM - specific . Not supported
}
else if (startswith(&ptr, "M3U"))
{
// Spec :: 4.3.1.1. EXTM3U - It MUST be the first line of every Media Playlist and every Master Playlist
if(lineNum)
{
AAMPLOG_WARN("M3U tag not the first line[%d] of Manifest",lineNum);
retval = eAAMPSTATUS_MANIFEST_CONTENT_ERROR;
break;
}
}
else if (startswith(&ptr, "-X-CONTENT-IDENTIFIER:"))
{
}
else if (startswith(&ptr, "-X-FOG"))
{
}
else if (startswith(&ptr, "-X-XCAL-CONTENTMETADATA"))
{ // placeholder for new Super8 DRM Agnostic Metadata
}
else if (startswith(&ptr, "-NOM-I-FRAME-DISTANCE"))
{ // placeholder for nominal distance between IFrames
}
else if (startswith(&ptr, "-X-ADVERTISING"))
{ // placeholder for advertising zone for linear (soon to be deprecated)
}
else if (startswith(&ptr, "-UPLYNK-LIVE"))
{ // related to uplynk streaming service
}
else if (startswith(&ptr, "-X-START:"))
{ // i.e. "TIME-OFFSET=2.336, PRECISE=YES" - specifies the preferred point in the video to start playback; not yet supported
// check if App has not configured any liveoffset
{
double offsetval = ParseXStartTimeOffset(ptr);
if (offsetval != 0)
{
if(!aamp->IsLiveAdjustRequired())
{
SETCONFIGVALUE(AAMP_STREAM_SETTING,eAAMPConfig_CDVRLiveOffset,(double)abs(offsetval));
}
else
{
SETCONFIGVALUE(AAMP_STREAM_SETTING,eAAMPConfig_LiveOffset,(double)abs(offsetval));
}
aamp->UpdateLiveOffset();
AAMPLOG_WARN("WARNING:found EXT-X-START in MainManifest Offset:%f liveOffset:%f",offsetval,aamp->mLiveOffset);
}
}
}
else if (startswith(&ptr, "INF:"))
{
// its not a main manifest, instead its playlist given for playback . Consider not a error
// Report it , so that Init flow can be changed accordingly
retval = eAAMPSTATUS_PLAYLIST_PLAYBACK;
break;
}
#ifdef AAMP_HLS_DRM
else if (startswith(&ptr, "-X-SESSION-KEY:"))
{
if (ISCONFIGSET(eAAMPConfig_Fragmp4PrefetchLicense))
{
size_t len;
len = FindLineLength(ptr);
std::string KeyTagStr(ptr,len);
pthread_mutex_lock(&aamp->drmParserMutex);
attrNameData* aesCtrAttrData = new attrNameData(KeyTagStr);
if (std::find(aamp->aesCtrAttrDataList.begin(), aamp->aesCtrAttrDataList.end(),
*aesCtrAttrData) == aamp->aesCtrAttrDataList.end()) {
AAMPLOG_INFO("Adding License data from Main Manifest %s",KeyTagStr.c_str());
aamp->aesCtrAttrDataList.push_back(*aesCtrAttrData);
}
SAFE_DELETE(aesCtrAttrData);
pthread_mutex_unlock(&aamp->drmParserMutex);
aamp->fragmentCdmEncrypted = true;
InitiateDrmProcess(this->aamp);
}
}
#endif
else
{
std::string unknowTag= ptr;
AAMPLOG_INFO("***unknown tag:%s", unknowTag.substr(0,24).c_str());
}
lineNum++;
}
}
ptr = next;
}// while till end of file
if(retval == eAAMPSTATUS_OK)
{
// Check if there are are valid profiles to do playback
if(vProfileCount == 0)
{
AAMPLOG_WARN("ERROR No video profiles available in manifest for playback");
retval = eAAMPSTATUS_MANIFEST_CONTENT_ERROR;
}
else
{ // If valid video profiles , check for Media and iframe and report warnings only
if(mMediaCount == 0)
{
// just a warning .Play the muxed content with default audio
AAMPLOG_WARN("WARNING !!! No media definitions in manifest for playback");
}
if(iFrameCount == 0)
{
// just a warning
AAMPLOG_WARN("WARNING !!! No iframe definitions .Trickplay not supported");
}
// if separate Media exists then find the codec for the audio type
for (auto& media : mediaInfoStore)
{
if ((media.type == eMEDIATYPE_AUDIO) &&
(media.group_id != NULL))
{
//Find audio codec from X-STREAM-INF: or streamInfo
for (auto& stream : streamInfoStore)
{
//Find the X-STREAM_INF having same group id as audio track to parse codec info
if (!stream.isIframeTrack && stream.audio != NULL &&
strcmp(stream.audio, media.group_id) == 0)
{
// assign the audioformat from streamInfo to mediaInfo
media.audioFormat = stream.audioFormat;
break;
}