-
Notifications
You must be signed in to change notification settings - Fork 0
/
ts2xml.py
executable file
·486 lines (416 loc) · 19 KB
/
ts2xml.py
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
#!/usr/bin/env python
import sys
from xml.sax import saxutils
import binascii
def wait_for_sync_byte(f, o):
signaled = False
while True:
b = f.read(1)
if not b:
raise StopIteration
if ord(b) == 0x47:
return
if not signaled:
o.write("<!-- resyncing -->\n")
signaled=True
program_map_pids = set()
packetized_elementary_stream_pids = set()
def output_program_association_table(f, o, length, payload_start):
o.write(" <program_association_table>\n")
pointer_field = None
cursor = 0
if payload_start:
pointer_field = ord(f.read(1))
if pointer_field:
o.write(" <pointer_field>"+str(pointer_field)+"</pointer_field>\n")
cursor+=1
table_id = ord(f.read(1)); cursor+=1
if table_id:
o.write(" <table_id>"+str(pointer_field)+"</table_id>\n")
byte3 = ord(f.read(1)) ; cursor+=1
if byte3 & 0x80 != 0x80:
o.write(" <!-- selection_syntax_indicator is not 1 -->\n")
if byte3 & 0x40 != 0x00:
o.write(" <!-- reserved1 is not 0 -->\n")
if byte3 & 0x30 != 0x30:
o.write(" <!-- reserved2 is not 11 -->\n")
if byte3 & 0x0C != 0x00:
o.write(" <!-- two higher bits of secrion_length is are not 00 -->\n")
byte4 = ord(f.read(1)) ; cursor+=1
section_length = byte4 | ((byte3 & 0x07) << 8)
if section_length:
o.write(" <section_length>"+str(section_length)+"</section_length>\n")
byte5 = ord(f.read(1)) ; cursor += 1
byte6 = ord(f.read(1)) ; cursor += 1
transport_stream_ID = byte5 << 8 | byte6
if transport_stream_ID:
o.write(" <transport_stream_ID>"+str(transport_stream_ID)+"</transport_stream_ID>\n")
byte7 = ord(f.read(1)) ; cursor += 1
if byte7 & 0xC0 != 0xC0:
o.write(" <!-- reserved3 is not 11 -->\n")
version_number = (byte7 & 0x3E) >> 1
o.write(" <version_number>"+str(version_number)+"</version_number>\n")
current_indicator = bool(byte7 & 0x01)
if not current_indicator:
o.write(" <not_appliable_yet/>\n")
section_number = ord(f.read(1)) ; cursor += 1
last_section_number = ord(f.read(1)) ; cursor += 1
if last_section_number:
o.write(" <section_number>"+str(section_number)+"</section_number>\n")
o.write(" <last_section_number>"+str(last_section_number)+"</last_section_number>\n")
for i in range(0,(section_length-5-4)/4):
o.write(" <program>\n")
cursor+=4
program_num = (ord(f.read(1)) << 8) | ord(f.read(1))
b1 = ord(f.read(1))
b2 = ord(f.read(1))
if b1 & 0xE0 != 0xE0:
o.write(" <!-- reserved is not 111 -->\n")
program_pid = b2 | ((b1 & 0x1F) << 8)
o.write(" <program_num>"+str(program_num)+"</program_num>\n")
o.write(" <program_pid>"+hex(program_pid)+"</program_pid>\n")
o.write(" </program>\n")
program_map_pids.add(program_pid)
crc32 = f.read(4); cursor+=4
length -= cursor
if length>0:
rest = f.read(length)
if (rest != '\xff' * length) and (rest != '\x00' * length):
o.write(" <rest>"+binascii.hexlify(rest)+"</rest>\n")
o.write(" </program_association_table>\n")
def output_program_map_table(f, o, length, payload_start):
o.write(" <program_map_table>\n")
pointer_field = None
cursor = 0
if payload_start:
pointer_field = ord(f.read(1))
if pointer_field:
o.write(" <pointer_field>"+str(pointer_field)+"</pointer_field>\n")
cursor+=1
table_id = ord(f.read(1)); cursor+=1
if table_id != 0x02:
o.write(" <table_id>"+str(pointer_field)+"</table_id>\n")
byte3 = ord(f.read(1)) ; cursor+=1
if byte3 & 0x80 != 0x80:
o.write(" <!-- selection_syntax_indicator is not 1 -->\n")
if byte3 & 0x40 != 0x00:
o.write(" <!-- reserved1 is not 0 -->\n")
if byte3 & 0x30 != 0x30:
o.write(" <!-- reserved2 is not 11 -->\n")
if byte3 & 0x0C != 0x00:
o.write(" <!-- two higher bits of secrion_length is are not 00 -->\n")
byte4 = ord(f.read(1)) ; cursor+=1
section_length = byte4 | ((byte3 & 0x07) << 8)
if section_length:
o.write(" <section_length>"+str(section_length)+"</section_length>\n")
byte5 = ord(f.read(1)) ; cursor += 1
byte6 = ord(f.read(1)) ; cursor += 1
program_num = byte5 << 8 | byte6
if program_num:
o.write(" <program_num>"+str(program_num)+"</program_num>\n")
byte7 = ord(f.read(1)) ; cursor += 1
if byte7 & 0xC0 != 0xC0:
o.write(" <!-- reserved3 is not 11 -->\n")
version_number = (byte7 & 0x3E) >> 1
o.write(" <version_number>"+str(version_number)+"</version_number>\n")
current_indicator = bool(byte7 & 0x01)
if not current_indicator:
o.write(" <not_appliable_yet/>\n")
section_number = ord(f.read(1)) ; cursor += 1
last_section_number = ord(f.read(1)) ; cursor += 1
byte8 = ord(f.read(1)) ; cursor += 1
byte9 = ord(f.read(1)) ; cursor += 1
pcr_pid = byte9 | ((byte8 & 0x1f) << 8)
o.write(" <general_timecode_stream_PID>"+hex(pcr_pid)+"</general_timecode_stream_PID>\n")
byte10 = ord(f.read(1)) ; cursor += 1
byte11 = ord(f.read(1)) ; cursor += 1
no_program_info_length = False
program_info_length = byte11 | ((byte10 & 0x0f) << 8)
if not program_info_length:
no_program_info_length = True
if last_section_number:
o.write(" <section_number>"+str(section_number)+"</section_number>\n")
o.write(" <last_section_number>"+str(last_section_number)+"</last_section_number>\n")
section_length -= (9+4)
while section_length>0:
o.write(" <stream>\n")
stream_type = ord(f.read(1))
o.write(" <stream_type>"+hex(stream_type)+"</stream_type>\n")
b1 = ord(f.read(1))
b2 = ord(f.read(1))
if b1 & 0xE0 != 0xE0:
o.write(" <!-- reserved is not 111 -->\n")
elementary_pid = b2 | ((b1 & 0x1F) << 8)
o.write(" <elementary_pid>"+hex(elementary_pid)+"</elementary_pid>\n")
b3 = ord(f.read(1))
b4 = ord(f.read(1))
if b3 & 0xF0 != 0xF0:
o.write(" <!-- reserved2 is not 1111 -->\n")
es_info_length = b4 | ((b3 & 0x0F) << 8)
cursor += 5+es_info_length
section_length -= 5+es_info_length
program_info_length -= 5+es_info_length
es_info = f.read(es_info_length)
if es_info_length:
o.write(" <ES_info>"+binascii.hexlify(es_info)+"</ES_info>\n")
o.write(" </stream>\n")
packetized_elementary_stream_pids.add(elementary_pid)
if(section_length!=0):
o.write(" <!-- section_length discrepancy -->\n")
if not no_program_info_length:
if(program_info_length!=0):
o.write(" <!-- program_info_length discrepancy -->\n")
crc32 = f.read(4); cursor+=4
length -= cursor
if length>0:
rest = f.read(length)
if (rest != '\xff' * length) and (rest != '\x00' * length):
o.write(" <rest>"+binascii.hexlify(rest)+"</rest>\n")
o.write(" </program_map_table>\n")
def output_packetized_elementary_stream(f, o, length, payload_start):
if payload_start:
o.write(" <elementary_stream_packet>\n")
byte0 = ord(f.read(1))
byte1 = ord(f.read(1))
byte2 = ord(f.read(1))
byte3 = ord(f.read(1))
byte4 = ord(f.read(1))
byte5 = ord(f.read(1))
if byte0 != 0 or byte1 != 0 or byte2 != 1:
o.write(" <!-- Start code is "+hex(byte0)+" "+hex(byte1)+" " +hex(byte2)+" instead of 000001 -->\n")
stream_id = byte3
stream_type = None
stream_type_comment = None
extension_present = False
if stream_id == 0xBD:
stream_type = "private_stream_1"
stream_type_comment = "non-MPEG audio, subpictures"
extension_present = True
elif stream_id == 0xBE:
stream_type = "padding_stream"
extension_present = False
elif stream_id == 0xBF:
stream_type = "private_stream_2"
stream_type_comment = "Navigation data"
extension_present = False
elif stream_id >= 0xC0 and stream_id <= 0xDF:
stream_type = "mpeg_audio_"+str(stream_id-0xC0)
extension_present = True
elif stream_id >= 0xE0 and stream_id <= 0xEF:
stream_type = "mpeg_video_"+str(stream_id-0xE0)
extension_present = True
else:
stream_type = "unknown_"+hex(stream_id)
packet_length = (byte4 << 8) | byte5
o.write(" <stream_type>"+stream_type+"</stream_type>\n")
o.write(" <packet_length>"+str(packet_length)+"</packet_length>\n")
if extension_present:
byte6 = ord(f.read(1))
byte7 = ord(f.read(1))
byte8 = ord(f.read(1))
if byte6 & 0xC0 != 0x80:
o.write(" <!-- extensions's reserved is not 10 -->\n")
pes_scrambling = (byte6 & 0x30 >> 4)
pes_priority = bool(byte6 & 0x08)
data_alignment_indicator = bool(byte6 & 0x04)
copyright = bool(byte6 & 0x02)
original = bool(byte6 & 0x01)
pts_present = bool(byte7 & 0x80)
dts_present = bool(byte7 & 0x40)
escr_present = bool(byte7 & 0x20)
es_rate_present = bool(byte7 & 0x10)
dsm_trick_mode_flag = bool(byte7 & 0x08)
additional_copy_info_present = bool(byte7 & 0x04)
PES_crc_present = bool(byte7 & 0x02)
PES_extension_flag = bool(byte7 & 0x01)
pes_header_data_length = byte8
length -= (9 + pes_header_data_length)
if pes_scrambling:
o.write(" <PES_scrambling>"+str(pes_scrambling)+"</PES_scrambling>\n")
if pes_priority:
o.write(" <PES_priority/>\n")
if data_alignment_indicator:
o.write(" <data_alignment_indicator/>\n")
if copyright:
o.write(" <copyright/>\n")
if original:
o.write(" <original/>\n")
if es_rate_present:
o.write(" <es_rate_present/>\n")
if dsm_trick_mode_flag:
o.write(" <dsm_trick_mode_flag/>\n")
if additional_copy_info_present:
o.write(" <additional_copy_info_present/>\n")
if PES_crc_present:
o.write(" <PES_crc_present/>\n")
if PES_extension_flag:
o.write(" <PES_extension_flag/>\n")
def read_ts():
byte1 = ord(f.read(1))
byte2 = ord(f.read(1))
byte3 = ord(f.read(1))
byte4 = ord(f.read(1))
byte5 = ord(f.read(1))
if byte1 & 0xC0 != 0x00:
o.write(" <!-- first two bits in [PD]TS are not 00 -->\n")
if byte5 & 0x01 != 0x01 or byte3 & 0x01 != 0x01 or byte1 & 0x01 != 0x01:
o.write(" <!-- sync bits are not OK in [PD]TS -->\n")
ts = ((byte5 & 0xFE) >> 1) | \
((byte4 & 0xFF) << 7) | \
((byte3 & 0xFE) << 14) | \
((byte2 & 0xFF) << 22) | \
((byte1 & 0x0E) << 29)
ts = ts / 90000.0
return ts
if pts_present:
pes_header_data_length -= 5
pts = read_ts()
o.write(" <presentation_timestamp>"+str(pts)+"</presentation_timestamp>\n")
if dts_present:
pes_header_data_length -= 5
dts = read_ts()
o.write(" <decode_timestamp>"+str(dts)+"</decode_timestamp>\n")
if escr_present:
pes_header_data_length -= 6
byte1 = ord(f.read(1))
byte2 = ord(f.read(1))
byte3 = ord(f.read(1))
byte4 = ord(f.read(1))
byte5 = ord(f.read(1))
byte6 = ord(f.read(1))
if byte1 & 0xC0 != 0x00:
o.write(" <!-- first two bits of ESCR are not 00 -->\n")
if byte1 & 0x04 != 0x04 or byte3 & 0x04 != 0x04 or byte5 & 0x04 != 0x04 or byte6 & 0x01 != 0x01:
o.write(" <!-- sync bits are not OK in ESCR -->\n")
escr_base = ((byte5 & 0xF8) >> 3) | \
((byte4 & 0xFF) << 5) | \
((byte3 & 0x03) << 13) | \
((byte3 & 0xF8) << 12) | \
((byte2 & 0xFF) << 18) | \
((byte1 & 0x03) << 26) | \
((byte1 & 0xF8) << 25)
escr_ext = ((byte6 & 0xFE) >> 1) | \
((byte5 & 0x03) << 7)
escr = escr_base / 90000.0 + escr_ext / 27000000.0
o.write(" <elementary_stream_clock_reference>"+str(escr)+
"</elementary_stream_clock_reference>\n"+
" <!-- note that I'm not sure very sure about the ESCR value -->\n")
if pes_header_data_length<0:
o.write(" <!-- something wront: remaining PES extended header is " +
str(pes_header_data_length) + " bytes -->\n")
elif pes_header_data_length:
resth = f.read(pes_header_data_length)
o.write(" <decoding_this_not_implemented>" + \
binascii.hexlify(resth)+"</decoding_this_not_implemented>\n")
else:
length -= 6
rest = f.read(length)
o.write(" <data>"+binascii.hexlify(rest)+"</data>\n")
o.write(" </elementary_stream_packet>\n")
else:
o.write(" <elementary_stream_packet_continue>\n")
rest = f.read(length)
o.write(" <data>"+binascii.hexlify(rest)+"</data>\n")
o.write(" </elementary_stream_packet_continue>\n")
def output_adaptation_field(f, o):
o.write(" <adaptation_field>\n")
additional_length = ord(f.read(1))
if additional_length == 0:
o.write(" </adaptation_field>\n")
return 1
flags = ord(f.read(1))
discontinuity = bool(flags & 0x80)
random_access = bool(flags & 0x40)
elementary_stream_priority = bool(flags & 0x20)
pcr = bool(flags & 0x10)
opcr = bool(flags & 0x08)
splicing_point = bool(flags & 0x04)
transport_private = bool(flags & 0x02)
adaptation_field_extension = bool(flags & 0x01)
if discontinuity: o.write(" <discontinuity/>\n")
if random_access: o.write(" <random_access/>\n")
if elementary_stream_priority: o.write(" <elementary_stream_priority/>\n")
length = additional_length+1 # size byte
additional_length-=1 # flags
def read_pcr():
pcr_byte_1 = ord(f.read(1)) # base
pcr_byte_2 = ord(f.read(1)) # base
pcr_byte_3 = ord(f.read(1)) # base
pcr_byte_4 = ord(f.read(1)) # base
pcr_byte_5 = ord(f.read(1)) # 1 bit base, 6 bits paddding, 1 bit ext
pcr_byte_6 = ord(f.read(1)) # 8 bits ext
base = (pcr_byte_1 << (1+8*3)) + \
(pcr_byte_2 << (1+8*2)) + \
(pcr_byte_3 << (1+8*1)) + \
(pcr_byte_4 << (1+8*0)) + \
(pcr_byte_5 >> 7)
ext = ((pcr_byte_5 & 0x01) << 8) + pcr_byte_6
time = base / 90000.0 + ext / 27000000.0
return time
if pcr:
if additional_length>=6:
additional_length-=6
val = read_pcr()
o.write(" <program_clock_reference>"+str(val)+"</program_clock_reference>\n")
if opcr:
if additional_length>=6:
additional_length-=6
val = read_pcr()
o.write(" <original_program_clock_reference>"+str(val)+"</original_program_clock_reference>\n")
if splicing_point:
if additional_length>=1:
additional_length-=1
splice_count = ord(f.read(1))
o.write(" <splice_countdown>"+str(splice_count)+"</splice_countdown>\n")
if additional_length:
o.write(" <!-- ignoring " + str(additional_length) + " bytes -->\n")
f.read(additional_length)
o.write(" </adaptation_field>\n")
return length
def main():
o = sys.stdout
o.write("<ts2xml>\n")
try:
f = sys.stdin
while True:
wait_for_sync_byte(f, o)
header1 = ord(f.read(1))
header2 = ord(f.read(1))
header3 = ord(f.read(1))
transport_error = bool(header1 & 0x80)
payload_unit_start = bool(header1 & 0x40)
transport_priority = bool(header1 & 0x20)
pid = header2 | ((header1 & 0x1F) << 8)
scrambling = ((header3 & 0xC0) >> 6)
have_adaptation_field = bool(header3 & 0x20)
have_payload = bool(header3 & 0x10)
continuity_couter = header3 & 0x0F
#print((transport_error, payload_unit_start, transport_priority, pid, scrambling, have_adaptation_field, have_payload, continuity_couter))
o.write("<packet>\n")
if transport_error: o.write(" <transport_error/>\n")
if payload_unit_start: o.write(" <payload_unit_start/>\n")
if transport_priority: o.write(" <transport_priority/>\n")
o.write(" <pid>"+hex(pid)+"</pid>\n")
if scrambling: o.write(" <scrambling>"+hex(scrambling)+"</scrambling>\n")
adaptation_field_size = 0
if have_adaptation_field:
adaptation_field_size = output_adaptation_field(f, o)
payload_size = 188 - 4 - adaptation_field_size
if pid == 0x00:
output_program_association_table(f, o, payload_size, payload_unit_start)
elif pid in program_map_pids:
output_program_map_table(f, o, payload_size, payload_unit_start)
elif pid in packetized_elementary_stream_pids:
output_packetized_elementary_stream(f, o, payload_size, payload_unit_start)
else:
if payload_size >= 10000 or payload_size < 0:
o.write(" <!-- Malformed packet, resyncing -->\n")
else:
payload = f.read(payload_size)
o.write(" <payload>"+binascii.hexlify(payload)+"</payload>\n")
o.write("</packet>\n")
except StopIteration: pass
except IOError: pass
o.write("</ts2xml>\n")
if __name__ == "__main__":
main()