]>
Commit | Line | Data |
---|---|---|
1da177e4 LT |
1 | /* |
2 | * dvb_demux.c - DVB kernel demux API | |
3 | * | |
4 | * Copyright (C) 2000-2001 Ralph Metzler <ralph@convergence.de> | |
5 | * & Marcus Metzler <marcus@convergence.de> | |
6 | * for convergence integrated media GmbH | |
7 | * | |
8 | * This program is free software; you can redistribute it and/or | |
9 | * modify it under the terms of the GNU Lesser General Public License | |
10 | * as published by the Free Software Foundation; either version 2.1 | |
11 | * of the License, or (at your option) any later version. | |
12 | * | |
13 | * This program is distributed in the hope that it will be useful, | |
14 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
16 | * GNU General Public License for more details. | |
17 | * | |
18 | * You should have received a copy of the GNU Lesser General Public License | |
19 | * along with this program; if not, write to the Free Software | |
20 | * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. | |
21 | * | |
22 | */ | |
23 | ||
24 | #include <linux/spinlock.h> | |
25 | #include <linux/slab.h> | |
26 | #include <linux/vmalloc.h> | |
27 | #include <linux/module.h> | |
28 | #include <linux/poll.h> | |
29 | #include <linux/string.h> | |
30 | #include <linux/crc32.h> | |
31 | #include <asm/uaccess.h> | |
32 | ||
33 | #include "dvb_demux.h" | |
34 | ||
35 | #define NOBUFS | |
36 | /* | |
37 | ** #define DVB_DEMUX_SECTION_LOSS_LOG to monitor payload loss in the syslog | |
38 | */ | |
39 | // #define DVB_DEMUX_SECTION_LOSS_LOG | |
40 | ||
0d834635 AO |
41 | static int dvb_demux_tscheck; |
42 | module_param(dvb_demux_tscheck, int, 0644); | |
43 | MODULE_PARM_DESC(dvb_demux_tscheck, | |
44 | "enable transport stream continuity and TEI check"); | |
45 | ||
46 | #define dprintk_tscheck(x...) do { \ | |
47 | if (dvb_demux_tscheck && printk_ratelimit()) \ | |
48 | printk(x); \ | |
49 | } while (0) | |
50 | ||
1da177e4 LT |
51 | /****************************************************************************** |
52 | * static inlined helper functions | |
53 | ******************************************************************************/ | |
54 | ||
1da177e4 LT |
55 | static inline u16 section_length(const u8 *buf) |
56 | { | |
dad4a730 | 57 | return 3 + ((buf[1] & 0x0f) << 8) + buf[2]; |
1da177e4 LT |
58 | } |
59 | ||
1da177e4 LT |
60 | static inline u16 ts_pid(const u8 *buf) |
61 | { | |
dad4a730 | 62 | return ((buf[1] & 0x1f) << 8) + buf[2]; |
1da177e4 LT |
63 | } |
64 | ||
1da177e4 LT |
65 | static inline u8 payload(const u8 *tsp) |
66 | { | |
dad4a730 | 67 | if (!(tsp[3] & 0x10)) // no payload? |
1da177e4 | 68 | return 0; |
dad4a730 AO |
69 | |
70 | if (tsp[3] & 0x20) { // adaptation field? | |
71 | if (tsp[4] > 183) // corrupted data? | |
1da177e4 LT |
72 | return 0; |
73 | else | |
dad4a730 | 74 | return 184 - 1 - tsp[4]; |
1da177e4 | 75 | } |
dad4a730 | 76 | |
1da177e4 LT |
77 | return 184; |
78 | } | |
79 | ||
dad4a730 | 80 | static u32 dvb_dmx_crc32(struct dvb_demux_feed *f, const u8 *src, size_t len) |
1da177e4 | 81 | { |
dad4a730 | 82 | return (f->feed.sec.crc_val = crc32_be(f->feed.sec.crc_val, src, len)); |
1da177e4 LT |
83 | } |
84 | ||
dad4a730 AO |
85 | static void dvb_dmx_memcopy(struct dvb_demux_feed *f, u8 *d, const u8 *s, |
86 | size_t len) | |
1da177e4 | 87 | { |
dad4a730 | 88 | memcpy(d, s, len); |
1da177e4 LT |
89 | } |
90 | ||
1da177e4 LT |
91 | /****************************************************************************** |
92 | * Software filter functions | |
93 | ******************************************************************************/ | |
94 | ||
dad4a730 AO |
95 | static inline int dvb_dmx_swfilter_payload(struct dvb_demux_feed *feed, |
96 | const u8 *buf) | |
1da177e4 LT |
97 | { |
98 | int count = payload(buf); | |
99 | int p; | |
100 | //int ccok; | |
101 | //u8 cc; | |
102 | ||
103 | if (count == 0) | |
104 | return -1; | |
105 | ||
dad4a730 | 106 | p = 188 - count; |
1da177e4 LT |
107 | |
108 | /* | |
dad4a730 AO |
109 | cc = buf[3] & 0x0f; |
110 | ccok = ((feed->cc + 1) & 0x0f) == cc; | |
111 | feed->cc = cc; | |
1da177e4 LT |
112 | if (!ccok) |
113 | printk("missed packet!\n"); | |
114 | */ | |
115 | ||
dad4a730 | 116 | if (buf[1] & 0x40) // PUSI ? |
1da177e4 LT |
117 | feed->peslen = 0xfffa; |
118 | ||
119 | feed->peslen += count; | |
120 | ||
dad4a730 | 121 | return feed->cb.ts(&buf[p], count, NULL, 0, &feed->feed.ts, DMX_OK); |
1da177e4 LT |
122 | } |
123 | ||
dad4a730 AO |
124 | static int dvb_dmx_swfilter_sectionfilter(struct dvb_demux_feed *feed, |
125 | struct dvb_demux_filter *f) | |
1da177e4 LT |
126 | { |
127 | u8 neq = 0; | |
128 | int i; | |
129 | ||
dad4a730 | 130 | for (i = 0; i < DVB_DEMUX_MASK_MAX; i++) { |
1da177e4 LT |
131 | u8 xor = f->filter.filter_value[i] ^ feed->feed.sec.secbuf[i]; |
132 | ||
133 | if (f->maskandmode[i] & xor) | |
134 | return 0; | |
135 | ||
136 | neq |= f->maskandnotmode[i] & xor; | |
137 | } | |
138 | ||
139 | if (f->doneq && !neq) | |
140 | return 0; | |
141 | ||
dad4a730 AO |
142 | return feed->cb.sec(feed->feed.sec.secbuf, feed->feed.sec.seclen, |
143 | NULL, 0, &f->filter, DMX_OK); | |
1da177e4 LT |
144 | } |
145 | ||
dad4a730 | 146 | static inline int dvb_dmx_swfilter_section_feed(struct dvb_demux_feed *feed) |
1da177e4 LT |
147 | { |
148 | struct dvb_demux *demux = feed->demux; | |
149 | struct dvb_demux_filter *f = feed->filter; | |
150 | struct dmx_section_feed *sec = &feed->feed.sec; | |
151 | int section_syntax_indicator; | |
152 | ||
153 | if (!sec->is_filtering) | |
154 | return 0; | |
155 | ||
156 | if (!f) | |
157 | return 0; | |
158 | ||
159 | if (sec->check_crc) { | |
160 | section_syntax_indicator = ((sec->secbuf[1] & 0x80) != 0); | |
161 | if (section_syntax_indicator && | |
162 | demux->check_crc32(feed, sec->secbuf, sec->seclen)) | |
163 | return -1; | |
164 | } | |
165 | ||
166 | do { | |
167 | if (dvb_dmx_swfilter_sectionfilter(feed, f) < 0) | |
168 | return -1; | |
169 | } while ((f = f->next) && sec->is_filtering); | |
170 | ||
171 | sec->seclen = 0; | |
172 | ||
173 | return 0; | |
174 | } | |
175 | ||
1da177e4 LT |
176 | static void dvb_dmx_swfilter_section_new(struct dvb_demux_feed *feed) |
177 | { | |
178 | struct dmx_section_feed *sec = &feed->feed.sec; | |
179 | ||
180 | #ifdef DVB_DEMUX_SECTION_LOSS_LOG | |
dad4a730 | 181 | if (sec->secbufp < sec->tsfeedp) { |
1da177e4 LT |
182 | int i, n = sec->tsfeedp - sec->secbufp; |
183 | ||
dad4a730 AO |
184 | /* |
185 | * Section padding is done with 0xff bytes entirely. | |
186 | * Due to speed reasons, we won't check all of them | |
187 | * but just first and last. | |
188 | */ | |
189 | if (sec->secbuf[0] != 0xff || sec->secbuf[n - 1] != 0xff) { | |
1da177e4 LT |
190 | printk("dvb_demux.c section ts padding loss: %d/%d\n", |
191 | n, sec->tsfeedp); | |
192 | printk("dvb_demux.c pad data:"); | |
dad4a730 | 193 | for (i = 0; i < n; i++) |
1da177e4 LT |
194 | printk(" %02x", sec->secbuf[i]); |
195 | printk("\n"); | |
196 | } | |
197 | } | |
198 | #endif | |
199 | ||
200 | sec->tsfeedp = sec->secbufp = sec->seclen = 0; | |
201 | sec->secbuf = sec->secbuf_base; | |
202 | } | |
203 | ||
204 | /* | |
dad4a730 AO |
205 | * Losless Section Demux 1.4.1 by Emard |
206 | * Valsecchi Patrick: | |
207 | * - middle of section A (no PUSI) | |
208 | * - end of section A and start of section B | |
209 | * (with PUSI pointing to the start of the second section) | |
210 | * | |
211 | * In this case, without feed->pusi_seen you'll receive a garbage section | |
212 | * consisting of the end of section A. Basically because tsfeedp | |
213 | * is incemented and the use=0 condition is not raised | |
214 | * when the second packet arrives. | |
215 | * | |
216 | * Fix: | |
217 | * when demux is started, let feed->pusi_seen = 0 to | |
218 | * prevent initial feeding of garbage from the end of | |
219 | * previous section. When you for the first time see PUSI=1 | |
220 | * then set feed->pusi_seen = 1 | |
221 | */ | |
222 | static int dvb_dmx_swfilter_section_copy_dump(struct dvb_demux_feed *feed, | |
223 | const u8 *buf, u8 len) | |
1da177e4 LT |
224 | { |
225 | struct dvb_demux *demux = feed->demux; | |
226 | struct dmx_section_feed *sec = &feed->feed.sec; | |
227 | u16 limit, seclen, n; | |
228 | ||
dad4a730 | 229 | if (sec->tsfeedp >= DMX_MAX_SECFEED_SIZE) |
1da177e4 LT |
230 | return 0; |
231 | ||
dad4a730 | 232 | if (sec->tsfeedp + len > DMX_MAX_SECFEED_SIZE) { |
1da177e4 LT |
233 | #ifdef DVB_DEMUX_SECTION_LOSS_LOG |
234 | printk("dvb_demux.c section buffer full loss: %d/%d\n", | |
dad4a730 AO |
235 | sec->tsfeedp + len - DMX_MAX_SECFEED_SIZE, |
236 | DMX_MAX_SECFEED_SIZE); | |
1da177e4 LT |
237 | #endif |
238 | len = DMX_MAX_SECFEED_SIZE - sec->tsfeedp; | |
239 | } | |
240 | ||
dad4a730 | 241 | if (len <= 0) |
1da177e4 LT |
242 | return 0; |
243 | ||
244 | demux->memcopy(feed, sec->secbuf_base + sec->tsfeedp, buf, len); | |
245 | sec->tsfeedp += len; | |
246 | ||
dad4a730 AO |
247 | /* |
248 | * Dump all the sections we can find in the data (Emard) | |
249 | */ | |
1da177e4 | 250 | limit = sec->tsfeedp; |
dad4a730 AO |
251 | if (limit > DMX_MAX_SECFEED_SIZE) |
252 | return -1; /* internal error should never happen */ | |
1da177e4 LT |
253 | |
254 | /* to be sure always set secbuf */ | |
255 | sec->secbuf = sec->secbuf_base + sec->secbufp; | |
256 | ||
dad4a730 | 257 | for (n = 0; sec->secbufp + 2 < limit; n++) { |
1da177e4 | 258 | seclen = section_length(sec->secbuf); |
b3967d6c | 259 | if (seclen <= 0 || seclen > DMX_MAX_SECTION_SIZE |
dad4a730 | 260 | || seclen + sec->secbufp > limit) |
1da177e4 LT |
261 | return 0; |
262 | sec->seclen = seclen; | |
263 | sec->crc_val = ~0; | |
264 | /* dump [secbuf .. secbuf+seclen) */ | |
dad4a730 | 265 | if (feed->pusi_seen) |
1da177e4 LT |
266 | dvb_dmx_swfilter_section_feed(feed); |
267 | #ifdef DVB_DEMUX_SECTION_LOSS_LOG | |
268 | else | |
269 | printk("dvb_demux.c pusi not seen, discarding section data\n"); | |
270 | #endif | |
dad4a730 AO |
271 | sec->secbufp += seclen; /* secbufp and secbuf moving together is */ |
272 | sec->secbuf += seclen; /* redundant but saves pointer arithmetic */ | |
1da177e4 LT |
273 | } |
274 | ||
275 | return 0; | |
276 | } | |
277 | ||
dad4a730 AO |
278 | static int dvb_dmx_swfilter_section_packet(struct dvb_demux_feed *feed, |
279 | const u8 *buf) | |
1da177e4 LT |
280 | { |
281 | u8 p, count; | |
282 | int ccok, dc_i = 0; | |
283 | u8 cc; | |
284 | ||
285 | count = payload(buf); | |
286 | ||
dad4a730 | 287 | if (count == 0) /* count == 0 if no payload or out of range */ |
1da177e4 LT |
288 | return -1; |
289 | ||
dad4a730 | 290 | p = 188 - count; /* payload start */ |
1da177e4 LT |
291 | |
292 | cc = buf[3] & 0x0f; | |
293 | ccok = ((feed->cc + 1) & 0x0f) == cc; | |
294 | feed->cc = cc; | |
295 | ||
296 | if (buf[3] & 0x20) { | |
297 | /* adaption field present, check for discontinuity_indicator */ | |
298 | if ((buf[4] > 0) && (buf[5] & 0x80)) | |
299 | dc_i = 1; | |
300 | } | |
301 | ||
302 | if (!ccok || dc_i) { | |
303 | #ifdef DVB_DEMUX_SECTION_LOSS_LOG | |
dad4a730 AO |
304 | printk("dvb_demux.c discontinuity detected %d bytes lost\n", |
305 | count); | |
306 | /* | |
307 | * those bytes under sume circumstances will again be reported | |
308 | * in the following dvb_dmx_swfilter_section_new | |
309 | */ | |
1da177e4 | 310 | #endif |
dad4a730 AO |
311 | /* |
312 | * Discontinuity detected. Reset pusi_seen = 0 to | |
313 | * stop feeding of suspicious data until next PUSI=1 arrives | |
314 | */ | |
1da177e4 LT |
315 | feed->pusi_seen = 0; |
316 | dvb_dmx_swfilter_section_new(feed); | |
1da177e4 LT |
317 | } |
318 | ||
319 | if (buf[1] & 0x40) { | |
dad4a730 | 320 | /* PUSI=1 (is set), section boundary is here */ |
1da177e4 | 321 | if (count > 1 && buf[p] < count) { |
dad4a730 | 322 | const u8 *before = &buf[p + 1]; |
1da177e4 | 323 | u8 before_len = buf[p]; |
dad4a730 AO |
324 | const u8 *after = &before[before_len]; |
325 | u8 after_len = count - 1 - before_len; | |
1da177e4 | 326 | |
dad4a730 AO |
327 | dvb_dmx_swfilter_section_copy_dump(feed, before, |
328 | before_len); | |
1da177e4 LT |
329 | /* before start of new section, set pusi_seen = 1 */ |
330 | feed->pusi_seen = 1; | |
331 | dvb_dmx_swfilter_section_new(feed); | |
dad4a730 AO |
332 | dvb_dmx_swfilter_section_copy_dump(feed, after, |
333 | after_len); | |
1da177e4 LT |
334 | } |
335 | #ifdef DVB_DEMUX_SECTION_LOSS_LOG | |
dad4a730 AO |
336 | else if (count > 0) |
337 | printk("dvb_demux.c PUSI=1 but %d bytes lost\n", count); | |
1da177e4 LT |
338 | #endif |
339 | } else { | |
dad4a730 AO |
340 | /* PUSI=0 (is not set), no section boundary */ |
341 | dvb_dmx_swfilter_section_copy_dump(feed, &buf[p], count); | |
1da177e4 | 342 | } |
dad4a730 | 343 | |
1da177e4 LT |
344 | return 0; |
345 | } | |
346 | ||
dad4a730 AO |
347 | static inline void dvb_dmx_swfilter_packet_type(struct dvb_demux_feed *feed, |
348 | const u8 *buf) | |
1da177e4 | 349 | { |
dad4a730 | 350 | switch (feed->type) { |
1da177e4 LT |
351 | case DMX_TYPE_TS: |
352 | if (!feed->feed.ts.is_filtering) | |
353 | break; | |
354 | if (feed->ts_type & TS_PACKET) { | |
355 | if (feed->ts_type & TS_PAYLOAD_ONLY) | |
356 | dvb_dmx_swfilter_payload(feed, buf); | |
357 | else | |
dad4a730 AO |
358 | feed->cb.ts(buf, 188, NULL, 0, &feed->feed.ts, |
359 | DMX_OK); | |
1da177e4 LT |
360 | } |
361 | if (feed->ts_type & TS_DECODER) | |
362 | if (feed->demux->write_to_decoder) | |
363 | feed->demux->write_to_decoder(feed, buf, 188); | |
364 | break; | |
365 | ||
366 | case DMX_TYPE_SEC: | |
367 | if (!feed->feed.sec.is_filtering) | |
368 | break; | |
369 | if (dvb_dmx_swfilter_section_packet(feed, buf) < 0) | |
dad4a730 | 370 | feed->feed.sec.seclen = feed->feed.sec.secbufp = 0; |
1da177e4 LT |
371 | break; |
372 | ||
373 | default: | |
374 | break; | |
375 | } | |
376 | } | |
377 | ||
378 | #define DVR_FEED(f) \ | |
379 | (((f)->type == DMX_TYPE_TS) && \ | |
380 | ((f)->feed.ts.is_filtering) && \ | |
4a24ce3a | 381 | (((f)->ts_type & (TS_PACKET | TS_DEMUX)) == TS_PACKET)) |
1da177e4 LT |
382 | |
383 | static void dvb_dmx_swfilter_packet(struct dvb_demux *demux, const u8 *buf) | |
384 | { | |
385 | struct dvb_demux_feed *feed; | |
1da177e4 LT |
386 | u16 pid = ts_pid(buf); |
387 | int dvr_done = 0; | |
388 | ||
0d834635 AO |
389 | if (dvb_demux_tscheck) { |
390 | if (!demux->cnt_storage) | |
391 | demux->cnt_storage = vmalloc(MAX_PID + 1); | |
392 | ||
393 | if (!demux->cnt_storage) { | |
394 | printk(KERN_WARNING "Couldn't allocate memory for TS/TEI check. Disabling it\n"); | |
395 | dvb_demux_tscheck = 0; | |
396 | goto no_dvb_demux_tscheck; | |
397 | } | |
398 | ||
399 | /* check pkt counter */ | |
400 | if (pid < MAX_PID) { | |
401 | if (buf[1] & 0x80) | |
402 | dprintk_tscheck("TEI detected. " | |
403 | "PID=0x%x data1=0x%x\n", | |
404 | pid, buf[1]); | |
405 | ||
406 | if ((buf[3] & 0xf) != demux->cnt_storage[pid]) | |
407 | dprintk_tscheck("TS packet counter mismatch. " | |
408 | "PID=0x%x expected 0x%x " | |
409 | "got 0x%x\n", | |
410 | pid, demux->cnt_storage[pid], | |
411 | buf[3] & 0xf); | |
412 | ||
413 | demux->cnt_storage[pid] = ((buf[3] & 0xf) + 1)&0xf; | |
414 | }; | |
415 | /* end check */ | |
416 | }; | |
417 | no_dvb_demux_tscheck: | |
418 | ||
79482619 | 419 | list_for_each_entry(feed, &demux->feed_list, list_head) { |
1da177e4 LT |
420 | if ((feed->pid != pid) && (feed->pid != 0x2000)) |
421 | continue; | |
422 | ||
423 | /* copy each packet only once to the dvr device, even | |
424 | * if a PID is in multiple filters (e.g. video + PCR) */ | |
425 | if ((DVR_FEED(feed)) && (dvr_done++)) | |
426 | continue; | |
427 | ||
a4afd658 | 428 | if (feed->pid == pid) |
1da177e4 | 429 | dvb_dmx_swfilter_packet_type(feed, buf); |
a4afd658 | 430 | else if (feed->pid == 0x2000) |
1da177e4 LT |
431 | feed->cb.ts(buf, 188, NULL, 0, &feed->feed.ts, DMX_OK); |
432 | } | |
433 | } | |
434 | ||
dad4a730 AO |
435 | void dvb_dmx_swfilter_packets(struct dvb_demux *demux, const u8 *buf, |
436 | size_t count) | |
1da177e4 | 437 | { |
28100165 | 438 | spin_lock(&demux->lock); |
1da177e4 LT |
439 | |
440 | while (count--) { | |
dad4a730 AO |
441 | if (buf[0] == 0x47) |
442 | dvb_dmx_swfilter_packet(demux, buf); | |
1da177e4 LT |
443 | buf += 188; |
444 | } | |
445 | ||
28100165 | 446 | spin_unlock(&demux->lock); |
1da177e4 | 447 | } |
1da177e4 | 448 | |
dad4a730 | 449 | EXPORT_SYMBOL(dvb_dmx_swfilter_packets); |
1da177e4 LT |
450 | |
451 | void dvb_dmx_swfilter(struct dvb_demux *demux, const u8 *buf, size_t count) | |
452 | { | |
453 | int p = 0, i, j; | |
454 | ||
28100165 | 455 | spin_lock(&demux->lock); |
1da177e4 | 456 | |
dad4a730 AO |
457 | if (demux->tsbufp) { |
458 | i = demux->tsbufp; | |
459 | j = 188 - i; | |
460 | if (count < j) { | |
1da177e4 LT |
461 | memcpy(&demux->tsbuf[i], buf, count); |
462 | demux->tsbufp += count; | |
463 | goto bailout; | |
464 | } | |
465 | memcpy(&demux->tsbuf[i], buf, j); | |
466 | if (demux->tsbuf[0] == 0x47) | |
467 | dvb_dmx_swfilter_packet(demux, demux->tsbuf); | |
468 | demux->tsbufp = 0; | |
469 | p += j; | |
470 | } | |
471 | ||
472 | while (p < count) { | |
473 | if (buf[p] == 0x47) { | |
dad4a730 AO |
474 | if (count - p >= 188) { |
475 | dvb_dmx_swfilter_packet(demux, &buf[p]); | |
1da177e4 LT |
476 | p += 188; |
477 | } else { | |
dad4a730 AO |
478 | i = count - p; |
479 | memcpy(demux->tsbuf, &buf[p], i); | |
480 | demux->tsbufp = i; | |
1da177e4 LT |
481 | goto bailout; |
482 | } | |
483 | } else | |
484 | p++; | |
485 | } | |
486 | ||
487 | bailout: | |
28100165 | 488 | spin_unlock(&demux->lock); |
1da177e4 | 489 | } |
dad4a730 | 490 | |
1da177e4 LT |
491 | EXPORT_SYMBOL(dvb_dmx_swfilter); |
492 | ||
493 | void dvb_dmx_swfilter_204(struct dvb_demux *demux, const u8 *buf, size_t count) | |
494 | { | |
dad4a730 | 495 | int p = 0, i, j; |
1da177e4 | 496 | u8 tmppack[188]; |
dad4a730 | 497 | |
28100165 | 498 | spin_lock(&demux->lock); |
1da177e4 | 499 | |
dad4a730 AO |
500 | if (demux->tsbufp) { |
501 | i = demux->tsbufp; | |
502 | j = 204 - i; | |
503 | if (count < j) { | |
1da177e4 LT |
504 | memcpy(&demux->tsbuf[i], buf, count); |
505 | demux->tsbufp += count; | |
506 | goto bailout; | |
507 | } | |
508 | memcpy(&demux->tsbuf[i], buf, j); | |
ec675bce | 509 | if ((demux->tsbuf[0] == 0x47) || (demux->tsbuf[0] == 0xB8)) { |
1da177e4 | 510 | memcpy(tmppack, demux->tsbuf, 188); |
dad4a730 AO |
511 | if (tmppack[0] == 0xB8) |
512 | tmppack[0] = 0x47; | |
1da177e4 LT |
513 | dvb_dmx_swfilter_packet(demux, tmppack); |
514 | } | |
515 | demux->tsbufp = 0; | |
516 | p += j; | |
517 | } | |
518 | ||
519 | while (p < count) { | |
ec675bce | 520 | if ((buf[p] == 0x47) || (buf[p] == 0xB8)) { |
dad4a730 AO |
521 | if (count - p >= 204) { |
522 | memcpy(tmppack, &buf[p], 188); | |
523 | if (tmppack[0] == 0xB8) | |
524 | tmppack[0] = 0x47; | |
1da177e4 LT |
525 | dvb_dmx_swfilter_packet(demux, tmppack); |
526 | p += 204; | |
527 | } else { | |
dad4a730 AO |
528 | i = count - p; |
529 | memcpy(demux->tsbuf, &buf[p], i); | |
530 | demux->tsbufp = i; | |
1da177e4 LT |
531 | goto bailout; |
532 | } | |
533 | } else { | |
534 | p++; | |
535 | } | |
536 | } | |
537 | ||
538 | bailout: | |
28100165 | 539 | spin_unlock(&demux->lock); |
1da177e4 | 540 | } |
1da177e4 | 541 | |
dad4a730 | 542 | EXPORT_SYMBOL(dvb_dmx_swfilter_204); |
1da177e4 | 543 | |
dad4a730 | 544 | static struct dvb_demux_filter *dvb_dmx_filter_alloc(struct dvb_demux *demux) |
1da177e4 LT |
545 | { |
546 | int i; | |
547 | ||
dad4a730 | 548 | for (i = 0; i < demux->filternum; i++) |
1da177e4 LT |
549 | if (demux->filter[i].state == DMX_STATE_FREE) |
550 | break; | |
551 | ||
552 | if (i == demux->filternum) | |
553 | return NULL; | |
554 | ||
555 | demux->filter[i].state = DMX_STATE_ALLOCATED; | |
556 | ||
557 | return &demux->filter[i]; | |
558 | } | |
559 | ||
dad4a730 | 560 | static struct dvb_demux_feed *dvb_dmx_feed_alloc(struct dvb_demux *demux) |
1da177e4 LT |
561 | { |
562 | int i; | |
563 | ||
dad4a730 | 564 | for (i = 0; i < demux->feednum; i++) |
1da177e4 LT |
565 | if (demux->feed[i].state == DMX_STATE_FREE) |
566 | break; | |
567 | ||
568 | if (i == demux->feednum) | |
569 | return NULL; | |
570 | ||
571 | demux->feed[i].state = DMX_STATE_ALLOCATED; | |
572 | ||
573 | return &demux->feed[i]; | |
574 | } | |
575 | ||
576 | static int dvb_demux_feed_find(struct dvb_demux_feed *feed) | |
577 | { | |
578 | struct dvb_demux_feed *entry; | |
579 | ||
580 | list_for_each_entry(entry, &feed->demux->feed_list, list_head) | |
581 | if (entry == feed) | |
582 | return 1; | |
583 | ||
584 | return 0; | |
585 | } | |
586 | ||
587 | static void dvb_demux_feed_add(struct dvb_demux_feed *feed) | |
588 | { | |
589 | spin_lock_irq(&feed->demux->lock); | |
590 | if (dvb_demux_feed_find(feed)) { | |
591 | printk(KERN_ERR "%s: feed already in list (type=%x state=%x pid=%x)\n", | |
46b4f7c1 | 592 | __func__, feed->type, feed->state, feed->pid); |
1da177e4 LT |
593 | goto out; |
594 | } | |
595 | ||
596 | list_add(&feed->list_head, &feed->demux->feed_list); | |
597 | out: | |
598 | spin_unlock_irq(&feed->demux->lock); | |
599 | } | |
600 | ||
601 | static void dvb_demux_feed_del(struct dvb_demux_feed *feed) | |
602 | { | |
603 | spin_lock_irq(&feed->demux->lock); | |
604 | if (!(dvb_demux_feed_find(feed))) { | |
605 | printk(KERN_ERR "%s: feed not in list (type=%x state=%x pid=%x)\n", | |
46b4f7c1 | 606 | __func__, feed->type, feed->state, feed->pid); |
1da177e4 LT |
607 | goto out; |
608 | } | |
609 | ||
610 | list_del(&feed->list_head); | |
611 | out: | |
612 | spin_unlock_irq(&feed->demux->lock); | |
613 | } | |
614 | ||
dad4a730 AO |
615 | static int dmx_ts_feed_set(struct dmx_ts_feed *ts_feed, u16 pid, int ts_type, |
616 | enum dmx_ts_pes pes_type, | |
617 | size_t circular_buffer_size, struct timespec timeout) | |
1da177e4 | 618 | { |
dad4a730 | 619 | struct dvb_demux_feed *feed = (struct dvb_demux_feed *)ts_feed; |
1da177e4 LT |
620 | struct dvb_demux *demux = feed->demux; |
621 | ||
622 | if (pid > DMX_MAX_PID) | |
623 | return -EINVAL; | |
624 | ||
3593cab5 | 625 | if (mutex_lock_interruptible(&demux->mutex)) |
1da177e4 LT |
626 | return -ERESTARTSYS; |
627 | ||
628 | if (ts_type & TS_DECODER) { | |
629 | if (pes_type >= DMX_TS_PES_OTHER) { | |
3593cab5 | 630 | mutex_unlock(&demux->mutex); |
1da177e4 LT |
631 | return -EINVAL; |
632 | } | |
633 | ||
634 | if (demux->pesfilter[pes_type] && | |
635 | demux->pesfilter[pes_type] != feed) { | |
3593cab5 | 636 | mutex_unlock(&demux->mutex); |
1da177e4 LT |
637 | return -EINVAL; |
638 | } | |
639 | ||
640 | demux->pesfilter[pes_type] = feed; | |
641 | demux->pids[pes_type] = pid; | |
642 | } | |
643 | ||
644 | dvb_demux_feed_add(feed); | |
645 | ||
646 | feed->pid = pid; | |
647 | feed->buffer_size = circular_buffer_size; | |
1da177e4 | 648 | feed->timeout = timeout; |
1da177e4 LT |
649 | feed->ts_type = ts_type; |
650 | feed->pes_type = pes_type; | |
651 | ||
1da177e4 LT |
652 | if (feed->buffer_size) { |
653 | #ifdef NOBUFS | |
dad4a730 | 654 | feed->buffer = NULL; |
1da177e4 LT |
655 | #else |
656 | feed->buffer = vmalloc(feed->buffer_size); | |
657 | if (!feed->buffer) { | |
3593cab5 | 658 | mutex_unlock(&demux->mutex); |
1da177e4 LT |
659 | return -ENOMEM; |
660 | } | |
661 | #endif | |
662 | } | |
663 | ||
664 | feed->state = DMX_STATE_READY; | |
3593cab5 | 665 | mutex_unlock(&demux->mutex); |
1da177e4 LT |
666 | |
667 | return 0; | |
668 | } | |
669 | ||
dad4a730 | 670 | static int dmx_ts_feed_start_filtering(struct dmx_ts_feed *ts_feed) |
1da177e4 | 671 | { |
dad4a730 | 672 | struct dvb_demux_feed *feed = (struct dvb_demux_feed *)ts_feed; |
1da177e4 LT |
673 | struct dvb_demux *demux = feed->demux; |
674 | int ret; | |
675 | ||
3593cab5 | 676 | if (mutex_lock_interruptible(&demux->mutex)) |
1da177e4 LT |
677 | return -ERESTARTSYS; |
678 | ||
679 | if (feed->state != DMX_STATE_READY || feed->type != DMX_TYPE_TS) { | |
3593cab5 | 680 | mutex_unlock(&demux->mutex); |
1da177e4 LT |
681 | return -EINVAL; |
682 | } | |
683 | ||
684 | if (!demux->start_feed) { | |
3593cab5 | 685 | mutex_unlock(&demux->mutex); |
1da177e4 LT |
686 | return -ENODEV; |
687 | } | |
688 | ||
689 | if ((ret = demux->start_feed(feed)) < 0) { | |
3593cab5 | 690 | mutex_unlock(&demux->mutex); |
1da177e4 LT |
691 | return ret; |
692 | } | |
693 | ||
694 | spin_lock_irq(&demux->lock); | |
695 | ts_feed->is_filtering = 1; | |
696 | feed->state = DMX_STATE_GO; | |
697 | spin_unlock_irq(&demux->lock); | |
3593cab5 | 698 | mutex_unlock(&demux->mutex); |
1da177e4 LT |
699 | |
700 | return 0; | |
701 | } | |
702 | ||
dad4a730 | 703 | static int dmx_ts_feed_stop_filtering(struct dmx_ts_feed *ts_feed) |
1da177e4 | 704 | { |
dad4a730 | 705 | struct dvb_demux_feed *feed = (struct dvb_demux_feed *)ts_feed; |
1da177e4 LT |
706 | struct dvb_demux *demux = feed->demux; |
707 | int ret; | |
708 | ||
c2788502 | 709 | mutex_lock(&demux->mutex); |
1da177e4 LT |
710 | |
711 | if (feed->state < DMX_STATE_GO) { | |
3593cab5 | 712 | mutex_unlock(&demux->mutex); |
1da177e4 LT |
713 | return -EINVAL; |
714 | } | |
715 | ||
716 | if (!demux->stop_feed) { | |
3593cab5 | 717 | mutex_unlock(&demux->mutex); |
1da177e4 LT |
718 | return -ENODEV; |
719 | } | |
720 | ||
721 | ret = demux->stop_feed(feed); | |
722 | ||
723 | spin_lock_irq(&demux->lock); | |
724 | ts_feed->is_filtering = 0; | |
725 | feed->state = DMX_STATE_ALLOCATED; | |
726 | spin_unlock_irq(&demux->lock); | |
3593cab5 | 727 | mutex_unlock(&demux->mutex); |
1da177e4 LT |
728 | |
729 | return ret; | |
730 | } | |
731 | ||
dad4a730 AO |
732 | static int dvbdmx_allocate_ts_feed(struct dmx_demux *dmx, |
733 | struct dmx_ts_feed **ts_feed, | |
734 | dmx_ts_cb callback) | |
1da177e4 | 735 | { |
dad4a730 | 736 | struct dvb_demux *demux = (struct dvb_demux *)dmx; |
1da177e4 LT |
737 | struct dvb_demux_feed *feed; |
738 | ||
3593cab5 | 739 | if (mutex_lock_interruptible(&demux->mutex)) |
1da177e4 LT |
740 | return -ERESTARTSYS; |
741 | ||
742 | if (!(feed = dvb_dmx_feed_alloc(demux))) { | |
3593cab5 | 743 | mutex_unlock(&demux->mutex); |
1da177e4 LT |
744 | return -EBUSY; |
745 | } | |
746 | ||
747 | feed->type = DMX_TYPE_TS; | |
748 | feed->cb.ts = callback; | |
749 | feed->demux = demux; | |
750 | feed->pid = 0xffff; | |
751 | feed->peslen = 0xfffa; | |
752 | feed->buffer = NULL; | |
753 | ||
754 | (*ts_feed) = &feed->feed.ts; | |
755 | (*ts_feed)->parent = dmx; | |
756 | (*ts_feed)->priv = NULL; | |
757 | (*ts_feed)->is_filtering = 0; | |
758 | (*ts_feed)->start_filtering = dmx_ts_feed_start_filtering; | |
759 | (*ts_feed)->stop_filtering = dmx_ts_feed_stop_filtering; | |
760 | (*ts_feed)->set = dmx_ts_feed_set; | |
761 | ||
1da177e4 LT |
762 | if (!(feed->filter = dvb_dmx_filter_alloc(demux))) { |
763 | feed->state = DMX_STATE_FREE; | |
3593cab5 | 764 | mutex_unlock(&demux->mutex); |
1da177e4 LT |
765 | return -EBUSY; |
766 | } | |
767 | ||
768 | feed->filter->type = DMX_TYPE_TS; | |
769 | feed->filter->feed = feed; | |
770 | feed->filter->state = DMX_STATE_READY; | |
771 | ||
3593cab5 | 772 | mutex_unlock(&demux->mutex); |
1da177e4 LT |
773 | |
774 | return 0; | |
775 | } | |
776 | ||
dad4a730 AO |
777 | static int dvbdmx_release_ts_feed(struct dmx_demux *dmx, |
778 | struct dmx_ts_feed *ts_feed) | |
1da177e4 | 779 | { |
dad4a730 AO |
780 | struct dvb_demux *demux = (struct dvb_demux *)dmx; |
781 | struct dvb_demux_feed *feed = (struct dvb_demux_feed *)ts_feed; | |
1da177e4 | 782 | |
c2788502 | 783 | mutex_lock(&demux->mutex); |
1da177e4 LT |
784 | |
785 | if (feed->state == DMX_STATE_FREE) { | |
3593cab5 | 786 | mutex_unlock(&demux->mutex); |
1da177e4 LT |
787 | return -EINVAL; |
788 | } | |
1da177e4 LT |
789 | #ifndef NOBUFS |
790 | vfree(feed->buffer); | |
dad4a730 | 791 | feed->buffer = NULL; |
1da177e4 LT |
792 | #endif |
793 | ||
794 | feed->state = DMX_STATE_FREE; | |
795 | feed->filter->state = DMX_STATE_FREE; | |
796 | ||
797 | dvb_demux_feed_del(feed); | |
798 | ||
799 | feed->pid = 0xffff; | |
800 | ||
801 | if (feed->ts_type & TS_DECODER && feed->pes_type < DMX_TS_PES_OTHER) | |
802 | demux->pesfilter[feed->pes_type] = NULL; | |
803 | ||
3593cab5 | 804 | mutex_unlock(&demux->mutex); |
1da177e4 LT |
805 | return 0; |
806 | } | |
807 | ||
1da177e4 LT |
808 | /****************************************************************************** |
809 | * dmx_section_feed API calls | |
810 | ******************************************************************************/ | |
811 | ||
dad4a730 AO |
812 | static int dmx_section_feed_allocate_filter(struct dmx_section_feed *feed, |
813 | struct dmx_section_filter **filter) | |
1da177e4 | 814 | { |
dad4a730 | 815 | struct dvb_demux_feed *dvbdmxfeed = (struct dvb_demux_feed *)feed; |
1da177e4 LT |
816 | struct dvb_demux *dvbdemux = dvbdmxfeed->demux; |
817 | struct dvb_demux_filter *dvbdmxfilter; | |
818 | ||
3593cab5 | 819 | if (mutex_lock_interruptible(&dvbdemux->mutex)) |
1da177e4 LT |
820 | return -ERESTARTSYS; |
821 | ||
822 | dvbdmxfilter = dvb_dmx_filter_alloc(dvbdemux); | |
823 | if (!dvbdmxfilter) { | |
3593cab5 | 824 | mutex_unlock(&dvbdemux->mutex); |
1da177e4 LT |
825 | return -EBUSY; |
826 | } | |
827 | ||
828 | spin_lock_irq(&dvbdemux->lock); | |
829 | *filter = &dvbdmxfilter->filter; | |
830 | (*filter)->parent = feed; | |
831 | (*filter)->priv = NULL; | |
832 | dvbdmxfilter->feed = dvbdmxfeed; | |
833 | dvbdmxfilter->type = DMX_TYPE_SEC; | |
834 | dvbdmxfilter->state = DMX_STATE_READY; | |
835 | dvbdmxfilter->next = dvbdmxfeed->filter; | |
836 | dvbdmxfeed->filter = dvbdmxfilter; | |
837 | spin_unlock_irq(&dvbdemux->lock); | |
838 | ||
3593cab5 | 839 | mutex_unlock(&dvbdemux->mutex); |
1da177e4 LT |
840 | return 0; |
841 | } | |
842 | ||
dad4a730 AO |
843 | static int dmx_section_feed_set(struct dmx_section_feed *feed, |
844 | u16 pid, size_t circular_buffer_size, | |
845 | int check_crc) | |
1da177e4 | 846 | { |
dad4a730 | 847 | struct dvb_demux_feed *dvbdmxfeed = (struct dvb_demux_feed *)feed; |
1da177e4 LT |
848 | struct dvb_demux *dvbdmx = dvbdmxfeed->demux; |
849 | ||
850 | if (pid > 0x1fff) | |
851 | return -EINVAL; | |
852 | ||
3593cab5 | 853 | if (mutex_lock_interruptible(&dvbdmx->mutex)) |
1da177e4 LT |
854 | return -ERESTARTSYS; |
855 | ||
856 | dvb_demux_feed_add(dvbdmxfeed); | |
857 | ||
858 | dvbdmxfeed->pid = pid; | |
859 | dvbdmxfeed->buffer_size = circular_buffer_size; | |
1da177e4 LT |
860 | dvbdmxfeed->feed.sec.check_crc = check_crc; |
861 | ||
862 | #ifdef NOBUFS | |
863 | dvbdmxfeed->buffer = NULL; | |
864 | #else | |
dad4a730 | 865 | dvbdmxfeed->buffer = vmalloc(dvbdmxfeed->buffer_size); |
1da177e4 | 866 | if (!dvbdmxfeed->buffer) { |
3593cab5 | 867 | mutex_unlock(&dvbdmx->mutex); |
1da177e4 LT |
868 | return -ENOMEM; |
869 | } | |
870 | #endif | |
871 | ||
872 | dvbdmxfeed->state = DMX_STATE_READY; | |
3593cab5 | 873 | mutex_unlock(&dvbdmx->mutex); |
1da177e4 LT |
874 | return 0; |
875 | } | |
876 | ||
1da177e4 LT |
877 | static void prepare_secfilters(struct dvb_demux_feed *dvbdmxfeed) |
878 | { | |
879 | int i; | |
880 | struct dvb_demux_filter *f; | |
881 | struct dmx_section_filter *sf; | |
882 | u8 mask, mode, doneq; | |
883 | ||
dad4a730 | 884 | if (!(f = dvbdmxfeed->filter)) |
1da177e4 LT |
885 | return; |
886 | do { | |
887 | sf = &f->filter; | |
888 | doneq = 0; | |
dad4a730 | 889 | for (i = 0; i < DVB_DEMUX_MASK_MAX; i++) { |
1da177e4 LT |
890 | mode = sf->filter_mode[i]; |
891 | mask = sf->filter_mask[i]; | |
892 | f->maskandmode[i] = mask & mode; | |
893 | doneq |= f->maskandnotmode[i] = mask & ~mode; | |
894 | } | |
895 | f->doneq = doneq ? 1 : 0; | |
896 | } while ((f = f->next)); | |
897 | } | |
898 | ||
1da177e4 LT |
899 | static int dmx_section_feed_start_filtering(struct dmx_section_feed *feed) |
900 | { | |
dad4a730 | 901 | struct dvb_demux_feed *dvbdmxfeed = (struct dvb_demux_feed *)feed; |
1da177e4 LT |
902 | struct dvb_demux *dvbdmx = dvbdmxfeed->demux; |
903 | int ret; | |
904 | ||
3593cab5 | 905 | if (mutex_lock_interruptible(&dvbdmx->mutex)) |
1da177e4 LT |
906 | return -ERESTARTSYS; |
907 | ||
908 | if (feed->is_filtering) { | |
3593cab5 | 909 | mutex_unlock(&dvbdmx->mutex); |
1da177e4 LT |
910 | return -EBUSY; |
911 | } | |
912 | ||
913 | if (!dvbdmxfeed->filter) { | |
3593cab5 | 914 | mutex_unlock(&dvbdmx->mutex); |
1da177e4 LT |
915 | return -EINVAL; |
916 | } | |
917 | ||
918 | dvbdmxfeed->feed.sec.tsfeedp = 0; | |
919 | dvbdmxfeed->feed.sec.secbuf = dvbdmxfeed->feed.sec.secbuf_base; | |
920 | dvbdmxfeed->feed.sec.secbufp = 0; | |
921 | dvbdmxfeed->feed.sec.seclen = 0; | |
922 | ||
923 | if (!dvbdmx->start_feed) { | |
3593cab5 | 924 | mutex_unlock(&dvbdmx->mutex); |
1da177e4 LT |
925 | return -ENODEV; |
926 | } | |
927 | ||
928 | prepare_secfilters(dvbdmxfeed); | |
929 | ||
930 | if ((ret = dvbdmx->start_feed(dvbdmxfeed)) < 0) { | |
3593cab5 | 931 | mutex_unlock(&dvbdmx->mutex); |
1da177e4 LT |
932 | return ret; |
933 | } | |
934 | ||
935 | spin_lock_irq(&dvbdmx->lock); | |
936 | feed->is_filtering = 1; | |
937 | dvbdmxfeed->state = DMX_STATE_GO; | |
938 | spin_unlock_irq(&dvbdmx->lock); | |
939 | ||
3593cab5 | 940 | mutex_unlock(&dvbdmx->mutex); |
1da177e4 LT |
941 | return 0; |
942 | } | |
943 | ||
dad4a730 | 944 | static int dmx_section_feed_stop_filtering(struct dmx_section_feed *feed) |
1da177e4 | 945 | { |
dad4a730 | 946 | struct dvb_demux_feed *dvbdmxfeed = (struct dvb_demux_feed *)feed; |
1da177e4 LT |
947 | struct dvb_demux *dvbdmx = dvbdmxfeed->demux; |
948 | int ret; | |
949 | ||
c2788502 | 950 | mutex_lock(&dvbdmx->mutex); |
1da177e4 LT |
951 | |
952 | if (!dvbdmx->stop_feed) { | |
3593cab5 | 953 | mutex_unlock(&dvbdmx->mutex); |
1da177e4 LT |
954 | return -ENODEV; |
955 | } | |
956 | ||
957 | ret = dvbdmx->stop_feed(dvbdmxfeed); | |
958 | ||
959 | spin_lock_irq(&dvbdmx->lock); | |
960 | dvbdmxfeed->state = DMX_STATE_READY; | |
961 | feed->is_filtering = 0; | |
962 | spin_unlock_irq(&dvbdmx->lock); | |
963 | ||
3593cab5 | 964 | mutex_unlock(&dvbdmx->mutex); |
1da177e4 LT |
965 | return ret; |
966 | } | |
967 | ||
1da177e4 | 968 | static int dmx_section_feed_release_filter(struct dmx_section_feed *feed, |
dad4a730 | 969 | struct dmx_section_filter *filter) |
1da177e4 | 970 | { |
dad4a730 AO |
971 | struct dvb_demux_filter *dvbdmxfilter = (struct dvb_demux_filter *)filter, *f; |
972 | struct dvb_demux_feed *dvbdmxfeed = (struct dvb_demux_feed *)feed; | |
1da177e4 LT |
973 | struct dvb_demux *dvbdmx = dvbdmxfeed->demux; |
974 | ||
c2788502 | 975 | mutex_lock(&dvbdmx->mutex); |
1da177e4 LT |
976 | |
977 | if (dvbdmxfilter->feed != dvbdmxfeed) { | |
3593cab5 | 978 | mutex_unlock(&dvbdmx->mutex); |
1da177e4 LT |
979 | return -EINVAL; |
980 | } | |
981 | ||
982 | if (feed->is_filtering) | |
983 | feed->stop_filtering(feed); | |
984 | ||
985 | spin_lock_irq(&dvbdmx->lock); | |
986 | f = dvbdmxfeed->filter; | |
987 | ||
988 | if (f == dvbdmxfilter) { | |
989 | dvbdmxfeed->filter = dvbdmxfilter->next; | |
990 | } else { | |
dad4a730 | 991 | while (f->next != dvbdmxfilter) |
1da177e4 LT |
992 | f = f->next; |
993 | f->next = f->next->next; | |
994 | } | |
995 | ||
996 | dvbdmxfilter->state = DMX_STATE_FREE; | |
997 | spin_unlock_irq(&dvbdmx->lock); | |
3593cab5 | 998 | mutex_unlock(&dvbdmx->mutex); |
1da177e4 LT |
999 | return 0; |
1000 | } | |
1001 | ||
1002 | static int dvbdmx_allocate_section_feed(struct dmx_demux *demux, | |
1003 | struct dmx_section_feed **feed, | |
1004 | dmx_section_cb callback) | |
1005 | { | |
dad4a730 | 1006 | struct dvb_demux *dvbdmx = (struct dvb_demux *)demux; |
1da177e4 LT |
1007 | struct dvb_demux_feed *dvbdmxfeed; |
1008 | ||
3593cab5 | 1009 | if (mutex_lock_interruptible(&dvbdmx->mutex)) |
1da177e4 LT |
1010 | return -ERESTARTSYS; |
1011 | ||
1012 | if (!(dvbdmxfeed = dvb_dmx_feed_alloc(dvbdmx))) { | |
3593cab5 | 1013 | mutex_unlock(&dvbdmx->mutex); |
1da177e4 LT |
1014 | return -EBUSY; |
1015 | } | |
1016 | ||
1017 | dvbdmxfeed->type = DMX_TYPE_SEC; | |
1018 | dvbdmxfeed->cb.sec = callback; | |
1019 | dvbdmxfeed->demux = dvbdmx; | |
1020 | dvbdmxfeed->pid = 0xffff; | |
1021 | dvbdmxfeed->feed.sec.secbuf = dvbdmxfeed->feed.sec.secbuf_base; | |
1022 | dvbdmxfeed->feed.sec.secbufp = dvbdmxfeed->feed.sec.seclen = 0; | |
1023 | dvbdmxfeed->feed.sec.tsfeedp = 0; | |
1024 | dvbdmxfeed->filter = NULL; | |
1025 | dvbdmxfeed->buffer = NULL; | |
1026 | ||
dad4a730 | 1027 | (*feed) = &dvbdmxfeed->feed.sec; |
1da177e4 LT |
1028 | (*feed)->is_filtering = 0; |
1029 | (*feed)->parent = demux; | |
1030 | (*feed)->priv = NULL; | |
1031 | ||
1032 | (*feed)->set = dmx_section_feed_set; | |
1033 | (*feed)->allocate_filter = dmx_section_feed_allocate_filter; | |
1034 | (*feed)->start_filtering = dmx_section_feed_start_filtering; | |
1035 | (*feed)->stop_filtering = dmx_section_feed_stop_filtering; | |
1036 | (*feed)->release_filter = dmx_section_feed_release_filter; | |
1037 | ||
3593cab5 | 1038 | mutex_unlock(&dvbdmx->mutex); |
1da177e4 LT |
1039 | return 0; |
1040 | } | |
1041 | ||
1042 | static int dvbdmx_release_section_feed(struct dmx_demux *demux, | |
1043 | struct dmx_section_feed *feed) | |
1044 | { | |
dad4a730 AO |
1045 | struct dvb_demux_feed *dvbdmxfeed = (struct dvb_demux_feed *)feed; |
1046 | struct dvb_demux *dvbdmx = (struct dvb_demux *)demux; | |
1da177e4 | 1047 | |
c2788502 | 1048 | mutex_lock(&dvbdmx->mutex); |
1da177e4 | 1049 | |
dad4a730 | 1050 | if (dvbdmxfeed->state == DMX_STATE_FREE) { |
3593cab5 | 1051 | mutex_unlock(&dvbdmx->mutex); |
1da177e4 LT |
1052 | return -EINVAL; |
1053 | } | |
1054 | #ifndef NOBUFS | |
1055 | vfree(dvbdmxfeed->buffer); | |
dad4a730 | 1056 | dvbdmxfeed->buffer = NULL; |
1da177e4 | 1057 | #endif |
dad4a730 | 1058 | dvbdmxfeed->state = DMX_STATE_FREE; |
1da177e4 LT |
1059 | |
1060 | dvb_demux_feed_del(dvbdmxfeed); | |
1061 | ||
1062 | dvbdmxfeed->pid = 0xffff; | |
1063 | ||
3593cab5 | 1064 | mutex_unlock(&dvbdmx->mutex); |
1da177e4 LT |
1065 | return 0; |
1066 | } | |
1067 | ||
1da177e4 LT |
1068 | /****************************************************************************** |
1069 | * dvb_demux kernel data API calls | |
1070 | ******************************************************************************/ | |
1071 | ||
1072 | static int dvbdmx_open(struct dmx_demux *demux) | |
1073 | { | |
dad4a730 | 1074 | struct dvb_demux *dvbdemux = (struct dvb_demux *)demux; |
1da177e4 LT |
1075 | |
1076 | if (dvbdemux->users >= MAX_DVB_DEMUX_USERS) | |
1077 | return -EUSERS; | |
1078 | ||
1079 | dvbdemux->users++; | |
1080 | return 0; | |
1081 | } | |
1082 | ||
1da177e4 LT |
1083 | static int dvbdmx_close(struct dmx_demux *demux) |
1084 | { | |
dad4a730 | 1085 | struct dvb_demux *dvbdemux = (struct dvb_demux *)demux; |
1da177e4 LT |
1086 | |
1087 | if (dvbdemux->users == 0) | |
1088 | return -ENODEV; | |
1089 | ||
1090 | dvbdemux->users--; | |
1091 | //FIXME: release any unneeded resources if users==0 | |
1092 | return 0; | |
1093 | } | |
1094 | ||
947a0800 | 1095 | static int dvbdmx_write(struct dmx_demux *demux, const char __user *buf, size_t count) |
1da177e4 | 1096 | { |
dad4a730 | 1097 | struct dvb_demux *dvbdemux = (struct dvb_demux *)demux; |
947a0800 | 1098 | void *p; |
1da177e4 LT |
1099 | |
1100 | if ((!demux->frontend) || (demux->frontend->source != DMX_MEMORY_FE)) | |
1101 | return -EINVAL; | |
1102 | ||
947a0800 AV |
1103 | p = kmalloc(count, GFP_USER); |
1104 | if (!p) | |
1105 | return -ENOMEM; | |
1106 | if (copy_from_user(p, buf, count)) { | |
1107 | kfree(p); | |
1108 | return -EFAULT; | |
1109 | } | |
1110 | if (mutex_lock_interruptible(&dvbdemux->mutex)) { | |
1111 | kfree(p); | |
1da177e4 | 1112 | return -ERESTARTSYS; |
947a0800 AV |
1113 | } |
1114 | dvb_dmx_swfilter(dvbdemux, p, count); | |
1115 | kfree(p); | |
3593cab5 | 1116 | mutex_unlock(&dvbdemux->mutex); |
1da177e4 LT |
1117 | |
1118 | if (signal_pending(current)) | |
1119 | return -EINTR; | |
1120 | return count; | |
1121 | } | |
1122 | ||
dad4a730 AO |
1123 | static int dvbdmx_add_frontend(struct dmx_demux *demux, |
1124 | struct dmx_frontend *frontend) | |
1da177e4 | 1125 | { |
dad4a730 | 1126 | struct dvb_demux *dvbdemux = (struct dvb_demux *)demux; |
1da177e4 LT |
1127 | struct list_head *head = &dvbdemux->frontend_list; |
1128 | ||
1129 | list_add(&(frontend->connectivity_list), head); | |
1130 | ||
1131 | return 0; | |
1132 | } | |
1133 | ||
dad4a730 AO |
1134 | static int dvbdmx_remove_frontend(struct dmx_demux *demux, |
1135 | struct dmx_frontend *frontend) | |
1da177e4 | 1136 | { |
dad4a730 | 1137 | struct dvb_demux *dvbdemux = (struct dvb_demux *)demux; |
1da177e4 LT |
1138 | struct list_head *pos, *n, *head = &dvbdemux->frontend_list; |
1139 | ||
dad4a730 | 1140 | list_for_each_safe(pos, n, head) { |
1da177e4 LT |
1141 | if (DMX_FE_ENTRY(pos) == frontend) { |
1142 | list_del(pos); | |
1143 | return 0; | |
1144 | } | |
1145 | } | |
1146 | ||
1147 | return -ENODEV; | |
1148 | } | |
1149 | ||
dad4a730 | 1150 | static struct list_head *dvbdmx_get_frontends(struct dmx_demux *demux) |
1da177e4 | 1151 | { |
dad4a730 | 1152 | struct dvb_demux *dvbdemux = (struct dvb_demux *)demux; |
1da177e4 LT |
1153 | |
1154 | if (list_empty(&dvbdemux->frontend_list)) | |
1155 | return NULL; | |
dad4a730 | 1156 | |
1da177e4 LT |
1157 | return &dvbdemux->frontend_list; |
1158 | } | |
1159 | ||
dad4a730 AO |
1160 | static int dvbdmx_connect_frontend(struct dmx_demux *demux, |
1161 | struct dmx_frontend *frontend) | |
1da177e4 | 1162 | { |
dad4a730 | 1163 | struct dvb_demux *dvbdemux = (struct dvb_demux *)demux; |
1da177e4 LT |
1164 | |
1165 | if (demux->frontend) | |
1166 | return -EINVAL; | |
1167 | ||
c2788502 | 1168 | mutex_lock(&dvbdemux->mutex); |
1da177e4 LT |
1169 | |
1170 | demux->frontend = frontend; | |
3593cab5 | 1171 | mutex_unlock(&dvbdemux->mutex); |
1da177e4 LT |
1172 | return 0; |
1173 | } | |
1174 | ||
1da177e4 LT |
1175 | static int dvbdmx_disconnect_frontend(struct dmx_demux *demux) |
1176 | { | |
dad4a730 | 1177 | struct dvb_demux *dvbdemux = (struct dvb_demux *)demux; |
1da177e4 | 1178 | |
c2788502 | 1179 | mutex_lock(&dvbdemux->mutex); |
1da177e4 LT |
1180 | |
1181 | demux->frontend = NULL; | |
3593cab5 | 1182 | mutex_unlock(&dvbdemux->mutex); |
1da177e4 LT |
1183 | return 0; |
1184 | } | |
1185 | ||
dad4a730 | 1186 | static int dvbdmx_get_pes_pids(struct dmx_demux *demux, u16 * pids) |
1da177e4 | 1187 | { |
dad4a730 | 1188 | struct dvb_demux *dvbdemux = (struct dvb_demux *)demux; |
1da177e4 | 1189 | |
dad4a730 | 1190 | memcpy(pids, dvbdemux->pids, 5 * sizeof(u16)); |
1da177e4 LT |
1191 | return 0; |
1192 | } | |
1193 | ||
1da177e4 LT |
1194 | int dvb_dmx_init(struct dvb_demux *dvbdemux) |
1195 | { | |
93653467 | 1196 | int i; |
1da177e4 LT |
1197 | struct dmx_demux *dmx = &dvbdemux->dmx; |
1198 | ||
0d834635 | 1199 | dvbdemux->cnt_storage = NULL; |
1da177e4 | 1200 | dvbdemux->users = 0; |
dad4a730 | 1201 | dvbdemux->filter = vmalloc(dvbdemux->filternum * sizeof(struct dvb_demux_filter)); |
1da177e4 LT |
1202 | |
1203 | if (!dvbdemux->filter) | |
1204 | return -ENOMEM; | |
1205 | ||
dad4a730 | 1206 | dvbdemux->feed = vmalloc(dvbdemux->feednum * sizeof(struct dvb_demux_feed)); |
1da177e4 LT |
1207 | if (!dvbdemux->feed) { |
1208 | vfree(dvbdemux->filter); | |
1209 | return -ENOMEM; | |
1210 | } | |
dad4a730 | 1211 | for (i = 0; i < dvbdemux->filternum; i++) { |
1da177e4 LT |
1212 | dvbdemux->filter[i].state = DMX_STATE_FREE; |
1213 | dvbdemux->filter[i].index = i; | |
1214 | } | |
dad4a730 | 1215 | for (i = 0; i < dvbdemux->feednum; i++) { |
1da177e4 LT |
1216 | dvbdemux->feed[i].state = DMX_STATE_FREE; |
1217 | dvbdemux->feed[i].index = i; | |
1218 | } | |
db574d7d AO |
1219 | |
1220 | INIT_LIST_HEAD(&dvbdemux->frontend_list); | |
1221 | ||
dad4a730 | 1222 | for (i = 0; i < DMX_TS_PES_OTHER; i++) { |
1da177e4 LT |
1223 | dvbdemux->pesfilter[i] = NULL; |
1224 | dvbdemux->pids[i] = 0xffff; | |
1225 | } | |
1226 | ||
1227 | INIT_LIST_HEAD(&dvbdemux->feed_list); | |
1228 | ||
1229 | dvbdemux->playing = 0; | |
1230 | dvbdemux->recording = 0; | |
1231 | dvbdemux->tsbufp = 0; | |
1232 | ||
1233 | if (!dvbdemux->check_crc32) | |
1234 | dvbdemux->check_crc32 = dvb_dmx_crc32; | |
1235 | ||
dad4a730 AO |
1236 | if (!dvbdemux->memcopy) |
1237 | dvbdemux->memcopy = dvb_dmx_memcopy; | |
1da177e4 LT |
1238 | |
1239 | dmx->frontend = NULL; | |
dad4a730 | 1240 | dmx->priv = dvbdemux; |
1da177e4 LT |
1241 | dmx->open = dvbdmx_open; |
1242 | dmx->close = dvbdmx_close; | |
1243 | dmx->write = dvbdmx_write; | |
1244 | dmx->allocate_ts_feed = dvbdmx_allocate_ts_feed; | |
1245 | dmx->release_ts_feed = dvbdmx_release_ts_feed; | |
1246 | dmx->allocate_section_feed = dvbdmx_allocate_section_feed; | |
1247 | dmx->release_section_feed = dvbdmx_release_section_feed; | |
1248 | ||
1da177e4 LT |
1249 | dmx->add_frontend = dvbdmx_add_frontend; |
1250 | dmx->remove_frontend = dvbdmx_remove_frontend; | |
1251 | dmx->get_frontends = dvbdmx_get_frontends; | |
1252 | dmx->connect_frontend = dvbdmx_connect_frontend; | |
1253 | dmx->disconnect_frontend = dvbdmx_disconnect_frontend; | |
1254 | dmx->get_pes_pids = dvbdmx_get_pes_pids; | |
1255 | ||
3593cab5 | 1256 | mutex_init(&dvbdemux->mutex); |
1da177e4 LT |
1257 | spin_lock_init(&dvbdemux->lock); |
1258 | ||
1da177e4 LT |
1259 | return 0; |
1260 | } | |
1da177e4 | 1261 | |
dad4a730 | 1262 | EXPORT_SYMBOL(dvb_dmx_init); |
1da177e4 | 1263 | |
93653467 | 1264 | void dvb_dmx_release(struct dvb_demux *dvbdemux) |
1da177e4 | 1265 | { |
0d834635 | 1266 | vfree(dvbdemux->cnt_storage); |
1da177e4 LT |
1267 | vfree(dvbdemux->filter); |
1268 | vfree(dvbdemux->feed); | |
1da177e4 | 1269 | } |
dad4a730 | 1270 | |
1da177e4 | 1271 | EXPORT_SYMBOL(dvb_dmx_release); |