1 |
#include "EXTERN.h" |
2 |
#include "perl.h" |
3 |
#include "XSUB.h" |
4 |
|
5 |
#include <string.h> |
6 |
|
7 |
#include <linux/dvb/frontend.h> |
8 |
#include <linux/dvb/dmx.h> |
9 |
|
10 |
#define CONST(name) { #name, name } |
11 |
|
12 |
enum { |
13 |
SCT_PAT = 0x00, |
14 |
SCT_CAT = 0x01, |
15 |
SCT_PMT = 0x02, |
16 |
SCT_TSDT = 0x03, |
17 |
SCT_NIT = 0x40, |
18 |
SCT_NIT_OTHER = 0x41, |
19 |
SCT_SDT = 0x42, |
20 |
SCT_SDT_OTHER = 0x46, |
21 |
SCT_BAT = 0x4a, |
22 |
SCT_EIT_PRESENT = 0x4e, |
23 |
SCT_EIT_PRESENT_OTHER = 0x4f, |
24 |
SCT_EIT_SCHEDULE0 = 0x50, |
25 |
SCT_EIT_SCHEDULE15 = 0x5f, |
26 |
SCT_EIT_SCHEDULE_OTHER0 = 0x60, |
27 |
SCT_EIT_SCHEDULE_OTHER15 = 0x6f, |
28 |
SCT_TDT = 0x70, |
29 |
SCT_RST = 0x71, |
30 |
SCT_ST = 0x72, |
31 |
SCT_TOT = 0x73, |
32 |
SCT_RNT = 0x74, |
33 |
SCT_CST = 0x75, |
34 |
SCT_RCT = 0x76, |
35 |
SCT_CIT = 0x77, |
36 |
SCT_MPE = 0x78, |
37 |
SCT_DIT = 0x7e, |
38 |
SCT_SIT = 0x7f, |
39 |
}; |
40 |
|
41 |
enum { |
42 |
DT_short_event = 0x4d, |
43 |
DT_extended_event = 0x4e, |
44 |
DT_component = 0x50, |
45 |
DT_content = 0x54, |
46 |
DT_private_data_specifier = 0x5f, |
47 |
DT_short_smoothing_buffer = 0x61, //NYI |
48 |
DT_scrambling_indicator = 0x65, //NYI |
49 |
DT_PDC = 0x69, |
50 |
}; |
51 |
|
52 |
static const struct consts { |
53 |
const char *name; |
54 |
const long value; |
55 |
} consts [] = { |
56 |
CONST (FE_QPSK), |
57 |
CONST (FE_QAM), |
58 |
CONST (FE_OFDM), |
59 |
|
60 |
CONST (FE_IS_STUPID), |
61 |
CONST (FE_CAN_INVERSION_AUTO), |
62 |
CONST (FE_CAN_FEC_1_2), |
63 |
CONST (FE_CAN_FEC_2_3), |
64 |
CONST (FE_CAN_FEC_3_4), |
65 |
CONST (FE_CAN_FEC_4_5), |
66 |
CONST (FE_CAN_FEC_5_6), |
67 |
CONST (FE_CAN_FEC_6_7), |
68 |
CONST (FE_CAN_FEC_7_8), |
69 |
CONST (FE_CAN_FEC_8_9), |
70 |
CONST (FE_CAN_FEC_AUTO), |
71 |
CONST (FE_CAN_QPSK), |
72 |
CONST (FE_CAN_QAM_16), |
73 |
CONST (FE_CAN_QAM_32), |
74 |
CONST (FE_CAN_QAM_64), |
75 |
CONST (FE_CAN_QAM_128), |
76 |
CONST (FE_CAN_QAM_256), |
77 |
CONST (FE_CAN_QAM_AUTO), |
78 |
CONST (FE_CAN_TRANSMISSION_MODE_AUTO), |
79 |
CONST (FE_CAN_BANDWIDTH_AUTO), |
80 |
CONST (FE_CAN_GUARD_INTERVAL_AUTO), |
81 |
CONST (FE_CAN_HIERARCHY_AUTO), |
82 |
CONST (FE_NEEDS_BENDING), |
83 |
CONST (FE_CAN_RECOVER), |
84 |
CONST (FE_CAN_MUTE_TS), |
85 |
|
86 |
CONST (FE_HAS_SIGNAL), |
87 |
CONST (FE_HAS_CARRIER), |
88 |
CONST (FE_HAS_VITERBI), |
89 |
CONST (FE_HAS_SYNC), |
90 |
CONST (FE_HAS_LOCK), |
91 |
CONST (FE_TIMEDOUT), |
92 |
CONST (FE_REINIT), |
93 |
|
94 |
CONST (INVERSION_OFF), |
95 |
CONST (INVERSION_ON), |
96 |
CONST (INVERSION_AUTO), |
97 |
|
98 |
CONST (FEC_NONE), |
99 |
CONST (FEC_1_2), |
100 |
CONST (FEC_2_3), |
101 |
CONST (FEC_3_4), |
102 |
CONST (FEC_4_5), |
103 |
CONST (FEC_5_6), |
104 |
CONST (FEC_6_7), |
105 |
CONST (FEC_7_8), |
106 |
CONST (FEC_8_9), |
107 |
CONST (FEC_AUTO), |
108 |
|
109 |
CONST (QPSK), |
110 |
CONST (QAM_16), |
111 |
CONST (QAM_32), |
112 |
CONST (QAM_64), |
113 |
CONST (QAM_128), |
114 |
CONST (QAM_256), |
115 |
CONST (QAM_AUTO), |
116 |
|
117 |
CONST (TRANSMISSION_MODE_2K), |
118 |
CONST (TRANSMISSION_MODE_8K), |
119 |
CONST (TRANSMISSION_MODE_AUTO), |
120 |
|
121 |
CONST (BANDWIDTH_8_MHZ), |
122 |
CONST (BANDWIDTH_7_MHZ), |
123 |
CONST (BANDWIDTH_6_MHZ), |
124 |
CONST (BANDWIDTH_AUTO), |
125 |
|
126 |
CONST (GUARD_INTERVAL_1_32), |
127 |
CONST (GUARD_INTERVAL_1_16), |
128 |
CONST (GUARD_INTERVAL_1_8), |
129 |
CONST (GUARD_INTERVAL_1_4), |
130 |
CONST (GUARD_INTERVAL_AUTO), |
131 |
|
132 |
CONST (HIERARCHY_NONE), |
133 |
CONST (HIERARCHY_1), |
134 |
CONST (HIERARCHY_2), |
135 |
CONST (HIERARCHY_4), |
136 |
CONST (HIERARCHY_AUTO), |
137 |
|
138 |
CONST (DMX_OUT_DECODER), |
139 |
CONST (DMX_OUT_TAP), |
140 |
CONST (DMX_OUT_TS_TAP), |
141 |
|
142 |
CONST (DMX_IN_FRONTEND), |
143 |
CONST (DMX_IN_DVR), |
144 |
|
145 |
CONST (DMX_PES_AUDIO0), |
146 |
CONST (DMX_PES_VIDEO0), |
147 |
CONST (DMX_PES_TELETEXT0), |
148 |
CONST (DMX_PES_SUBTITLE0), |
149 |
CONST (DMX_PES_PCR0), |
150 |
|
151 |
CONST (DMX_PES_AUDIO1), |
152 |
CONST (DMX_PES_VIDEO1), |
153 |
CONST (DMX_PES_TELETEXT1), |
154 |
CONST (DMX_PES_SUBTITLE1), |
155 |
CONST (DMX_PES_PCR1), |
156 |
|
157 |
CONST (DMX_PES_AUDIO2), |
158 |
CONST (DMX_PES_VIDEO2), |
159 |
CONST (DMX_PES_TELETEXT2), |
160 |
CONST (DMX_PES_SUBTITLE2), |
161 |
CONST (DMX_PES_PCR2), |
162 |
|
163 |
CONST (DMX_PES_AUDIO3), |
164 |
CONST (DMX_PES_VIDEO3), |
165 |
CONST (DMX_PES_TELETEXT3), |
166 |
CONST (DMX_PES_SUBTITLE3), |
167 |
CONST (DMX_PES_PCR3), |
168 |
|
169 |
CONST (DMX_PES_OTHER), |
170 |
|
171 |
CONST (DMX_PES_AUDIO), |
172 |
CONST (DMX_PES_VIDEO), |
173 |
CONST (DMX_PES_TELETEXT), |
174 |
CONST (DMX_PES_SUBTITLE), |
175 |
CONST (DMX_PES_PCR), |
176 |
|
177 |
CONST (DMX_SCRAMBLING_EV), |
178 |
CONST (DMX_FRONTEND_EV), |
179 |
|
180 |
CONST (DMX_CHECK_CRC), |
181 |
CONST (DMX_ONESHOT), |
182 |
CONST (DMX_IMMEDIATE_START), |
183 |
CONST (DMX_KERNEL_CLIENT), |
184 |
|
185 |
CONST (DMX_SOURCE_FRONT0), |
186 |
CONST (DMX_SOURCE_FRONT1), |
187 |
CONST (DMX_SOURCE_FRONT2), |
188 |
CONST (DMX_SOURCE_FRONT3), |
189 |
|
190 |
CONST (DMX_SOURCE_DVR0), |
191 |
CONST (DMX_SOURCE_DVR1), |
192 |
CONST (DMX_SOURCE_DVR2), |
193 |
CONST (DMX_SOURCE_DVR3), |
194 |
|
195 |
CONST (DMX_SCRAMBLING_OFF), |
196 |
CONST (DMX_SCRAMBLING_ON), |
197 |
|
198 |
// constants defined by this file |
199 |
CONST (SCT_PAT), |
200 |
CONST (SCT_CAT), |
201 |
CONST (SCT_PMT), |
202 |
CONST (SCT_TSDT), |
203 |
CONST (SCT_NIT), |
204 |
CONST (SCT_NIT_OTHER), |
205 |
CONST (SCT_SDT), |
206 |
CONST (SCT_SDT_OTHER), |
207 |
CONST (SCT_BAT), |
208 |
CONST (SCT_EIT_PRESENT), |
209 |
CONST (SCT_EIT_PRESENT_OTHER), |
210 |
CONST (SCT_EIT_SCHEDULE0), |
211 |
CONST (SCT_EIT_SCHEDULE15), |
212 |
CONST (SCT_EIT_SCHEDULE_OTHER0), |
213 |
CONST (SCT_EIT_SCHEDULE_OTHER15), |
214 |
CONST (SCT_TDT), |
215 |
CONST (SCT_RST), |
216 |
CONST (SCT_ST), |
217 |
CONST (SCT_TOT), |
218 |
CONST (SCT_RNT), |
219 |
CONST (SCT_CST), |
220 |
CONST (SCT_RCT), |
221 |
CONST (SCT_CIT), |
222 |
CONST (SCT_MPE), |
223 |
CONST (SCT_DIT), |
224 |
CONST (SCT_SIT), |
225 |
}; |
226 |
|
227 |
#define HVS_S(hv,struct,member) hv_store (hv, #member, sizeof (#member) - 1, newSVpv (struct.member, 0), 0) |
228 |
#define HVS_I(hv,struct,member) hv_store (hv, #member, sizeof (#member) - 1, newSViv (struct.member), 0) |
229 |
|
230 |
static void |
231 |
set_parameters (HV *hv, struct dvb_frontend_parameters *p, fe_type_t type) |
232 |
{ |
233 |
HVS_I (hv, (*p), frequency); |
234 |
HVS_I (hv, (*p), inversion); |
235 |
|
236 |
switch (type) |
237 |
{ |
238 |
case FE_QPSK: |
239 |
HVS_I (hv, (*p).u.qpsk, symbol_rate); |
240 |
HVS_I (hv, (*p).u.qpsk, fec_inner); |
241 |
break; |
242 |
|
243 |
case FE_QAM: |
244 |
HVS_I (hv, (*p).u.qam, symbol_rate); |
245 |
HVS_I (hv, (*p).u.qam, fec_inner); |
246 |
HVS_I (hv, (*p).u.qam, modulation); |
247 |
break; |
248 |
|
249 |
case FE_OFDM: |
250 |
HVS_I (hv, (*p).u.ofdm, bandwidth); |
251 |
HVS_I (hv, (*p).u.ofdm, code_rate_HP); |
252 |
HVS_I (hv, (*p).u.ofdm, code_rate_LP); |
253 |
HVS_I (hv, (*p).u.ofdm, constellation); |
254 |
HVS_I (hv, (*p).u.ofdm, transmission_mode); |
255 |
break; |
256 |
} |
257 |
} |
258 |
|
259 |
typedef unsigned char u8; |
260 |
|
261 |
static SV *dec_sv; |
262 |
static u8 *dec_data; |
263 |
static long dec_ofs, dec_len8; |
264 |
static U32 dec_field; |
265 |
STRLEN dec_len; |
266 |
|
267 |
#define decode_overflow (dec_ofs > dec_len8) |
268 |
|
269 |
static void |
270 |
decode_set (SV *data) |
271 |
{ |
272 |
if (dec_sv) |
273 |
SvREFCNT_dec (dec_sv); |
274 |
|
275 |
dec_sv = newSVsv (data); |
276 |
dec_data = SvPVbyte (dec_sv, dec_len); |
277 |
dec_ofs = 0; |
278 |
dec_len8 = dec_len << 3; |
279 |
} |
280 |
|
281 |
static U32 |
282 |
decode_field (int bits) |
283 |
{ |
284 |
u8 *p = dec_data + (dec_ofs >> 3); |
285 |
int frac = 8 - (dec_ofs & 7); |
286 |
dec_ofs += bits; |
287 |
|
288 |
if (decode_overflow) |
289 |
return dec_field = 0; |
290 |
|
291 |
U32 r = *p++; |
292 |
|
293 |
r &= (1UL << frac) - 1; |
294 |
|
295 |
if (bits < frac) |
296 |
r >>= (frac - bits); |
297 |
else |
298 |
{ |
299 |
bits -= frac; |
300 |
|
301 |
while (bits >= 8) |
302 |
{ |
303 |
r = (r << 8) | *p++; |
304 |
bits -= 8; |
305 |
} |
306 |
|
307 |
if (bits > 0) |
308 |
r = (r << bits) | (*p >> (8 - bits)); |
309 |
} |
310 |
|
311 |
return dec_field = r; |
312 |
} |
313 |
|
314 |
#define DEC_I(hv, bits, name) hv_store (hv, #name, sizeof (#name) - 1, newSViv (decode_field (bits)), 0) |
315 |
#define DEC_S(hv, bytes, name) hv_store (hv, #name, sizeof (#name) - 1, newSVpvn (dec_data + (dec_ofs >> 3), (bytes)), 0), dec_ofs += (bytes) << 3 |
316 |
|
317 |
static AV * |
318 |
decode_descriptors (long end) |
319 |
{ |
320 |
AV *av = newAV (); |
321 |
|
322 |
while (dec_ofs < end) |
323 |
{ |
324 |
HV *hv = newHV (); |
325 |
U8 type, len, a; |
326 |
long end; |
327 |
|
328 |
av_push (av, newRV_noinc ((SV *)hv)); |
329 |
|
330 |
DEC_I (hv, 8, type); |
331 |
type = dec_field; |
332 |
len = decode_field (8); |
333 |
|
334 |
end = dec_ofs + (len << 3); |
335 |
|
336 |
if (end > dec_len8) |
337 |
return av; |
338 |
|
339 |
switch (type) |
340 |
{ |
341 |
case DT_PDC: |
342 |
decode_field (4); |
343 |
DEC_I (hv, 20, programme_identification_label); |
344 |
break; |
345 |
|
346 |
case DT_component: |
347 |
decode_field (4); |
348 |
DEC_I (hv, 4, stream_content); |
349 |
DEC_I (hv, 8, component_type); |
350 |
DEC_I (hv, 8, component_tag); |
351 |
DEC_S (hv, 3, ISO_639_language_code); |
352 |
DEC_S (hv, (end - dec_ofs) >> 3, text); |
353 |
break; |
354 |
|
355 |
case DT_short_event: |
356 |
DEC_S (hv, 3, ISO_639_language_code); |
357 |
a = decode_field (8); DEC_S (hv, a, event_name); |
358 |
a = decode_field (8); DEC_S (hv, a, text); |
359 |
break; |
360 |
|
361 |
case DT_content: |
362 |
DEC_S (hv, len, content); |
363 |
break; |
364 |
|
365 |
case DT_private_data_specifier: |
366 |
DEC_I (hv, 32, private_data_specifier); |
367 |
break; |
368 |
|
369 |
default: |
370 |
fprintf (stderr, "UNKXXX %x\n", type);//D |
371 |
case 0: |
372 |
case DT_extended_event: |
373 |
case 0x80: |
374 |
case 0x81: |
375 |
case 0x82: |
376 |
case 0x84: |
377 |
case 0x85: |
378 |
DEC_S (hv, len, raw_data); |
379 |
break; |
380 |
} |
381 |
|
382 |
dec_ofs = end; // re-sync, in case of problems |
383 |
} |
384 |
|
385 |
return av; |
386 |
} |
387 |
|
388 |
MODULE = Linux::DVB PACKAGE = Linux::DVB |
389 |
|
390 |
PROTOTYPES: DISABLE |
391 |
|
392 |
void |
393 |
_consts () |
394 |
PPCODE: |
395 |
const struct consts *c; |
396 |
for (c = consts; |
397 |
c < consts + sizeof (consts) / sizeof (consts[0]); |
398 |
c++) |
399 |
{ |
400 |
XPUSHs (sv_2mortal (newSVpv (c->name, 0))); |
401 |
XPUSHs (sv_2mortal (newSViv (c->value))); |
402 |
} |
403 |
|
404 |
MODULE = Linux::DVB PACKAGE = Linux::DVB::Frontend |
405 |
|
406 |
SV * |
407 |
_frontend_info (int fd) |
408 |
CODE: |
409 |
struct dvb_frontend_info fi; |
410 |
HV *hv; |
411 |
|
412 |
if (ioctl (fd, FE_GET_INFO, &fi) < 0) |
413 |
XSRETURN_UNDEF; |
414 |
|
415 |
hv = newHV (); |
416 |
HVS_S (hv, fi, name); |
417 |
HVS_I (hv, fi, type); |
418 |
HVS_I (hv, fi, type); |
419 |
HVS_I (hv, fi, frequency_min); |
420 |
HVS_I (hv, fi, frequency_max); |
421 |
HVS_I (hv, fi, frequency_stepsize); |
422 |
HVS_I (hv, fi, frequency_tolerance); |
423 |
HVS_I (hv, fi, symbol_rate_min); |
424 |
HVS_I (hv, fi, symbol_rate_max); |
425 |
HVS_I (hv, fi, symbol_rate_tolerance); |
426 |
HVS_I (hv, fi, notifier_delay); |
427 |
HVS_I (hv, fi, caps); |
428 |
|
429 |
RETVAL = (SV *)newRV_noinc ((SV *)hv); |
430 |
OUTPUT: |
431 |
RETVAL |
432 |
|
433 |
long |
434 |
_read_status (int fd) |
435 |
CODE: |
436 |
fe_status_t st; |
437 |
|
438 |
if (ioctl (fd, FE_READ_STATUS, &st) < 0) |
439 |
XSRETURN_UNDEF; |
440 |
|
441 |
RETVAL = st; |
442 |
OUTPUT: |
443 |
RETVAL |
444 |
|
445 |
U32 |
446 |
_read_ber (int fd) |
447 |
CODE: |
448 |
uint32_t ber; |
449 |
if (ioctl (fd, FE_READ_BER, &ber) < 0) |
450 |
XSRETURN_UNDEF; |
451 |
|
452 |
RETVAL = ber; |
453 |
OUTPUT: |
454 |
RETVAL |
455 |
|
456 |
U32 |
457 |
_read_snr (int fd) |
458 |
CODE: |
459 |
uint32_t ber; |
460 |
if (ioctl (fd, FE_READ_SNR, &ber) < 0) |
461 |
XSRETURN_UNDEF; |
462 |
|
463 |
RETVAL = ber; |
464 |
OUTPUT: |
465 |
RETVAL |
466 |
|
467 |
|
468 |
I16 |
469 |
_signal_strength (int fd) |
470 |
CODE: |
471 |
int16_t st; |
472 |
if (ioctl (fd, FE_READ_SIGNAL_STRENGTH, &st) < 0) |
473 |
XSRETURN_UNDEF; |
474 |
|
475 |
RETVAL = st; |
476 |
OUTPUT: |
477 |
RETVAL |
478 |
|
479 |
|
480 |
U32 |
481 |
_uncorrected_blocks (int fd) |
482 |
CODE: |
483 |
uint32_t ubl; |
484 |
if (ioctl (fd, FE_READ_UNCORRECTED_BLOCKS, &ubl) < 0) |
485 |
XSRETURN_UNDEF; |
486 |
|
487 |
RETVAL = ubl; |
488 |
OUTPUT: |
489 |
RETVAL |
490 |
|
491 |
SV * |
492 |
_get (int fd, int type) |
493 |
CODE: |
494 |
struct dvb_frontend_parameters p; |
495 |
HV *hv; |
496 |
|
497 |
if (ioctl (fd, FE_GET_FRONTEND, &p) < 0) |
498 |
XSRETURN_UNDEF; |
499 |
|
500 |
hv = newHV (); |
501 |
set_parameters (hv, &p, type); |
502 |
RETVAL = (SV *)newRV_noinc ((SV *)hv); |
503 |
OUTPUT: |
504 |
RETVAL |
505 |
|
506 |
SV * |
507 |
_event (int fd, int type) |
508 |
CODE: |
509 |
struct dvb_frontend_event e; |
510 |
HV *hv; |
511 |
|
512 |
if (ioctl (fd, FE_GET_EVENT, &e) < 0) |
513 |
XSRETURN_UNDEF; |
514 |
|
515 |
hv = newHV (); |
516 |
HVS_I (hv, e, status); |
517 |
set_parameters (hv, &e.parameters, type); |
518 |
RETVAL = (SV *)newRV_noinc ((SV *)hv); |
519 |
OUTPUT: |
520 |
RETVAL |
521 |
|
522 |
MODULE = Linux::DVB PACKAGE = Linux::DVB::Demux |
523 |
|
524 |
int |
525 |
_start (int fd) |
526 |
ALIAS: |
527 |
_stop = 1 |
528 |
CODE: |
529 |
if (ioctl (fd, ix ? DMX_STOP : DMX_START, 0) < 0) |
530 |
XSRETURN_UNDEF; |
531 |
|
532 |
RETVAL = 1; |
533 |
OUTPUT: |
534 |
RETVAL |
535 |
|
536 |
int |
537 |
_filter (int fd, U16 pid, SV *filter, SV *mask, U32 timeout = 0, U32 flags = DMX_CHECK_CRC) |
538 |
CODE: |
539 |
struct dmx_sct_filter_params p; |
540 |
STRLEN l; |
541 |
char *s; |
542 |
|
543 |
memset (&p.filter, 0, sizeof (p.filter)); |
544 |
|
545 |
p.pid = pid; |
546 |
s = SvPVbyte (filter, l); if (l > DMX_FILTER_SIZE) l = DMX_FILTER_SIZE; memcpy (p.filter.filter, s, l); |
547 |
s = SvPVbyte (mask , l); if (l > DMX_FILTER_SIZE) l = DMX_FILTER_SIZE; memcpy (p.filter.mask , s, l); |
548 |
p.timeout = timeout; |
549 |
p.flags = flags; |
550 |
if (ioctl (fd, DMX_SET_FILTER, &p) < 0) |
551 |
XSRETURN_UNDEF; |
552 |
|
553 |
RETVAL = 1; |
554 |
OUTPUT: |
555 |
RETVAL |
556 |
|
557 |
int |
558 |
_pes_filter (int fd, U16 pid, long input, long output, long type, U32 flags = 0) |
559 |
CODE: |
560 |
struct dmx_pes_filter_params p; |
561 |
|
562 |
p.pid = pid; |
563 |
p.input = input; |
564 |
p.output = output; |
565 |
p.pes_type = type; |
566 |
p.flags = flags; |
567 |
if (ioctl (fd, DMX_SET_PES_FILTER, &p) < 0) |
568 |
XSRETURN_UNDEF; |
569 |
|
570 |
RETVAL = 1; |
571 |
OUTPUT: |
572 |
RETVAL |
573 |
|
574 |
int |
575 |
_buffer (int fd, unsigned long size) |
576 |
CODE: |
577 |
|
578 |
if (ioctl (fd, DMX_SET_BUFFER_SIZE, size) < 0) |
579 |
XSRETURN_UNDEF; |
580 |
|
581 |
RETVAL = 1; |
582 |
OUTPUT: |
583 |
RETVAL |
584 |
|
585 |
MODULE = Linux::DVB PACKAGE = Linux::DVB::Decode PREFIX = decode_ |
586 |
|
587 |
void |
588 |
set (SV *data) |
589 |
CODE: |
590 |
|
591 |
int |
592 |
len () |
593 |
CODE: |
594 |
RETVAL = (dec_ofs + 7) >> 3; |
595 |
OUTPUT: |
596 |
RETVAL |
597 |
|
598 |
U32 |
599 |
field (int bits) |
600 |
|
601 |
SV * |
602 |
si (SV *stream) |
603 |
CODE: |
604 |
HV *hv = newHV (); |
605 |
|
606 |
U8 table_id; |
607 |
U16 length; |
608 |
long end; |
609 |
|
610 |
decode_set (stream); |
611 |
|
612 |
do { |
613 |
DEC_I (hv, 8, table_id); |
614 |
table_id = dec_field; |
615 |
} while (table_id == 0xff); |
616 |
|
617 |
DEC_I (hv, 1, section_syntax_indicator); |
618 |
decode_field (1); |
619 |
decode_field (2); |
620 |
|
621 |
length = decode_field (12); |
622 |
end = dec_ofs + (length << 3); |
623 |
|
624 |
switch (table_id) |
625 |
{ |
626 |
case SCT_EIT_PRESENT: |
627 |
case SCT_EIT_PRESENT_OTHER: |
628 |
case SCT_EIT_SCHEDULE0...SCT_EIT_SCHEDULE15: //GCC |
629 |
case SCT_EIT_SCHEDULE_OTHER0...SCT_EIT_SCHEDULE_OTHER15: //GCC |
630 |
DEC_I (hv, 16, service_id); |
631 |
decode_field (2); |
632 |
DEC_I (hv, 5, version_number); |
633 |
DEC_I (hv, 1, current_next_indicator); |
634 |
DEC_I (hv, 8, section_number); |
635 |
DEC_I (hv, 8, last_section_number); |
636 |
DEC_I (hv, 16, transport_stream_id); |
637 |
DEC_I (hv, 16, original_network_id); |
638 |
DEC_I (hv, 8, segment_last_section_number); |
639 |
DEC_I (hv, 8, last_table_id); |
640 |
|
641 |
AV *events = newAV (); |
642 |
hv_store (hv, "events", 6, newRV_noinc ((SV *)events), 0); |
643 |
|
644 |
while (end - dec_ofs > 32) |
645 |
{ |
646 |
long dll; |
647 |
AV *desc; |
648 |
HV *ev = newHV (); |
649 |
av_push (events, newRV_noinc ((SV *)ev)); |
650 |
|
651 |
DEC_I (ev, 16, event_id); |
652 |
DEC_I (ev, 16, start_time_mjd); |
653 |
DEC_I (ev, 24, start_time_hms); |
654 |
DEC_I (ev, 24, duration); |
655 |
DEC_I (ev, 3, running_status); |
656 |
DEC_I (ev, 1, free_CA_mode); |
657 |
|
658 |
dll = dec_ofs + (decode_field (12) << 3); |
659 |
|
660 |
desc = decode_descriptors (dll); |
661 |
hv_store (ev, "descriptors", 11, newRV_noinc ((SV *)desc), 0); |
662 |
} |
663 |
|
664 |
decode_field (32); // skip CRC |
665 |
|
666 |
break; |
667 |
#if 0 // service desc table |
668 |
case SCT_SDT: |
669 |
case SCT_SDT_OTHER: |
670 |
|
671 |
AV *events = newAV (); |
672 |
hv_store (hv, "events", 0, newRV_noinc (events), 0); |
673 |
|
674 |
while (end - dec_ofs > 32) |
675 |
{ |
676 |
HV *ev = newHV (); |
677 |
U32 dll; |
678 |
av_push (events, newRV_noinc (ev)); |
679 |
|
680 |
DEC_I (ev, 16, service_id); |
681 |
decode_field (6); |
682 |
DEC_I (ev, 1, EIT_schedule_flags); |
683 |
DEC_I (ev, 1, EIT_present_following_flag); |
684 |
DEC_I (ev, 3, running_status); |
685 |
DEC_I (ev, 1, free_CA_mode); |
686 |
|
687 |
dll = decode_field (12); |
688 |
|
689 |
DEC_I (ev, 1, free_CA_mode); |
690 |
} |
691 |
|
692 |
decode_field (32); // skip CRC |
693 |
//DEC_S (hv, length + 3 - (dec_ofs >> 3), raw_data); |
694 |
break; |
695 |
#endif |
696 |
default: |
697 |
DEC_S (hv, length, raw_data); |
698 |
break; |
699 |
} |
700 |
|
701 |
if (decode_overflow) |
702 |
{ |
703 |
SvREFCNT_dec (hv); |
704 |
XSRETURN_UNDEF; |
705 |
} |
706 |
|
707 |
sv_chop (stream, SvPVX (stream) + ((dec_ofs + 7) >> 3)); |
708 |
|
709 |
RETVAL = (SV *)newRV_noinc ((SV *)hv); |
710 |
OUTPUT: |
711 |
RETVAL |
712 |
|