2 * dmxdev.c - DVB demultiplexer device
4 * Copyright (C) 2000 Ralph Metzler <ralph@convergence.de>
5 * & Marcus Metzler <marcus@convergence.de>
6 for convergence integrated media GmbH
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.
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.
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.
24 #include <linux/spinlock.h>
25 #include <linux/slab.h>
26 #include <linux/vmalloc.h>
27 #include <linux/module.h>
28 #include <linux/moduleparam.h>
29 #include <linux/sched.h>
30 #include <linux/poll.h>
31 #include <linux/ioctl.h>
32 #include <linux/wait.h>
33 #include <asm/uaccess.h>
34 #include <asm/system.h>
40 module_param(debug, int, 0644);
41 MODULE_PARM_DESC(debug, "Turn on/off debugging (default:off).");
43 #define dprintk if (debug) printk
45 static inline struct dmxdev_filter *
46 dvb_dmxdev_file_to_filter(struct file *file)
48 return (struct dmxdev_filter *) file->private_data;
51 static inline void dvb_dmxdev_buffer_init(struct dmxdev_buffer *buffer)
58 init_waitqueue_head(&buffer->queue);
61 static inline int dvb_dmxdev_buffer_write(struct dmxdev_buffer *buf, const u8 *src, int len)
72 free=buf->pread-buf->pwrite;
76 split=buf->size-buf->pwrite;
79 dprintk("dmxdev: buffer overflow\n");
86 memcpy(buf->data + buf->pwrite, src, split);
90 memcpy(buf->data + buf->pwrite, src+split, todo);
91 buf->pwrite=(buf->pwrite+todo)%buf->size;
95 static ssize_t dvb_dmxdev_buffer_read(struct dmxdev_buffer *src,
96 int non_blocking, char __user *buf, size_t count, loff_t *ppos)
98 unsigned long todo=count;
99 int split, avail, error;
104 if ((error=src->error)) {
105 src->pwrite=src->pread;
110 if (non_blocking && (src->pwrite==src->pread))
114 if (non_blocking && (src->pwrite==src->pread))
115 return (count-todo) ? (count-todo) : -EWOULDBLOCK;
117 if (wait_event_interruptible(src->queue,
118 (src->pread!=src->pwrite) ||
122 if ((error=src->error)) {
123 src->pwrite=src->pread;
129 avail=src->pwrite - src->pread;
132 split=src->size - src->pread;
137 if (copy_to_user(buf, src->data+src->pread, split))
145 if (copy_to_user(buf, src->data+src->pread, avail))
147 src->pread = (src->pread + avail) % src->size;
155 static struct dmx_frontend * get_fe(struct dmx_demux *demux, int type)
157 struct list_head *head, *pos;
159 head=demux->get_frontends(demux);
162 list_for_each(pos, head)
163 if (DMX_FE_ENTRY(pos)->source==type)
164 return DMX_FE_ENTRY(pos);
169 static inline void dvb_dmxdev_dvr_state_set(struct dmxdev_dvr *dmxdevdvr, int state)
171 spin_lock_irq(&dmxdevdvr->dev->lock);
172 dmxdevdvr->state=state;
173 spin_unlock_irq(&dmxdevdvr->dev->lock);
176 static int dvb_dvr_open(struct inode *inode, struct file *file)
178 struct dvb_device *dvbdev = file->private_data;
179 struct dmxdev *dmxdev = dvbdev->priv;
180 struct dmx_frontend *front;
182 dprintk ("function : %s\n", __FUNCTION__);
184 if (down_interruptible (&dmxdev->mutex))
187 if ((file->f_flags&O_ACCMODE)==O_RDWR) {
188 if (!(dmxdev->capabilities&DMXDEV_CAP_DUPLEX)) {
194 if ((file->f_flags&O_ACCMODE)==O_RDONLY) {
195 dvb_dmxdev_buffer_init(&dmxdev->dvr_buffer);
196 dmxdev->dvr_buffer.size=DVR_BUFFER_SIZE;
197 dmxdev->dvr_buffer.data=vmalloc(DVR_BUFFER_SIZE);
198 if (!dmxdev->dvr_buffer.data) {
204 if ((file->f_flags&O_ACCMODE)==O_WRONLY) {
205 dmxdev->dvr_orig_fe=dmxdev->demux->frontend;
207 if (!dmxdev->demux->write) {
212 front=get_fe(dmxdev->demux, DMX_MEMORY_FE);
218 dmxdev->demux->disconnect_frontend(dmxdev->demux);
219 dmxdev->demux->connect_frontend(dmxdev->demux, front);
225 static int dvb_dvr_release(struct inode *inode, struct file *file)
227 struct dvb_device *dvbdev = file->private_data;
228 struct dmxdev *dmxdev = dvbdev->priv;
230 if (down_interruptible (&dmxdev->mutex))
233 if ((file->f_flags&O_ACCMODE)==O_WRONLY) {
234 dmxdev->demux->disconnect_frontend(dmxdev->demux);
235 dmxdev->demux->connect_frontend(dmxdev->demux,
236 dmxdev->dvr_orig_fe);
238 if ((file->f_flags&O_ACCMODE)==O_RDONLY) {
239 if (dmxdev->dvr_buffer.data) {
240 void *mem=dmxdev->dvr_buffer.data;
242 spin_lock_irq(&dmxdev->lock);
243 dmxdev->dvr_buffer.data=NULL;
244 spin_unlock_irq(&dmxdev->lock);
252 static ssize_t dvb_dvr_write(struct file *file, const char __user *buf,
253 size_t count, loff_t *ppos)
255 struct dvb_device *dvbdev = file->private_data;
256 struct dmxdev *dmxdev = dvbdev->priv;
259 if (!dmxdev->demux->write)
261 if ((file->f_flags&O_ACCMODE)!=O_WRONLY)
263 if (down_interruptible (&dmxdev->mutex))
265 ret=dmxdev->demux->write(dmxdev->demux, buf, count);
270 static ssize_t dvb_dvr_read(struct file *file, char __user *buf, size_t count,
273 struct dvb_device *dvbdev = file->private_data;
274 struct dmxdev *dmxdev = dvbdev->priv;
277 //down(&dmxdev->mutex);
278 ret= dvb_dmxdev_buffer_read(&dmxdev->dvr_buffer,
279 file->f_flags&O_NONBLOCK,
281 //up(&dmxdev->mutex);
285 static inline void dvb_dmxdev_filter_state_set(struct dmxdev_filter *dmxdevfilter, int state)
287 spin_lock_irq(&dmxdevfilter->dev->lock);
288 dmxdevfilter->state=state;
289 spin_unlock_irq(&dmxdevfilter->dev->lock);
292 static int dvb_dmxdev_set_buffer_size(struct dmxdev_filter *dmxdevfilter, unsigned long size)
294 struct dmxdev_buffer *buf=&dmxdevfilter->buffer;
299 if (dmxdevfilter->state>=DMXDEV_STATE_GO)
301 spin_lock_irq(&dmxdevfilter->dev->lock);
305 buf->pwrite=buf->pread=0;
306 spin_unlock_irq(&dmxdevfilter->dev->lock);
310 mem=vmalloc(dmxdevfilter->buffer.size);
313 spin_lock_irq(&dmxdevfilter->dev->lock);
315 spin_unlock_irq(&dmxdevfilter->dev->lock);
320 static void dvb_dmxdev_filter_timeout(unsigned long data)
322 struct dmxdev_filter *dmxdevfilter=(struct dmxdev_filter *)data;
324 dmxdevfilter->buffer.error=-ETIMEDOUT;
325 spin_lock_irq(&dmxdevfilter->dev->lock);
326 dmxdevfilter->state=DMXDEV_STATE_TIMEDOUT;
327 spin_unlock_irq(&dmxdevfilter->dev->lock);
328 wake_up(&dmxdevfilter->buffer.queue);
331 static void dvb_dmxdev_filter_timer(struct dmxdev_filter *dmxdevfilter)
333 struct dmx_sct_filter_params *para=&dmxdevfilter->params.sec;
335 del_timer(&dmxdevfilter->timer);
337 dmxdevfilter->timer.function=dvb_dmxdev_filter_timeout;
338 dmxdevfilter->timer.data=(unsigned long) dmxdevfilter;
339 dmxdevfilter->timer.expires=jiffies+1+(HZ/2+HZ*para->timeout)/1000;
340 add_timer(&dmxdevfilter->timer);
344 static int dvb_dmxdev_section_callback(const u8 *buffer1, size_t buffer1_len,
345 const u8 *buffer2, size_t buffer2_len,
346 struct dmx_section_filter *filter, enum dmx_success success)
348 struct dmxdev_filter *dmxdevfilter = filter->priv;
351 if (dmxdevfilter->buffer.error) {
352 wake_up(&dmxdevfilter->buffer.queue);
355 spin_lock(&dmxdevfilter->dev->lock);
356 if (dmxdevfilter->state!=DMXDEV_STATE_GO) {
357 spin_unlock(&dmxdevfilter->dev->lock);
360 del_timer(&dmxdevfilter->timer);
361 dprintk("dmxdev: section callback %02x %02x %02x %02x %02x %02x\n",
362 buffer1[0], buffer1[1],
363 buffer1[2], buffer1[3],
364 buffer1[4], buffer1[5]);
365 ret=dvb_dmxdev_buffer_write(&dmxdevfilter->buffer, buffer1, buffer1_len);
366 if (ret==buffer1_len) {
367 ret=dvb_dmxdev_buffer_write(&dmxdevfilter->buffer, buffer2, buffer2_len);
370 dmxdevfilter->buffer.pwrite=dmxdevfilter->buffer.pread;
371 dmxdevfilter->buffer.error=-EOVERFLOW;
373 if (dmxdevfilter->params.sec.flags&DMX_ONESHOT)
374 dmxdevfilter->state=DMXDEV_STATE_DONE;
375 spin_unlock(&dmxdevfilter->dev->lock);
376 wake_up(&dmxdevfilter->buffer.queue);
380 static int dvb_dmxdev_ts_callback(const u8 *buffer1, size_t buffer1_len,
381 const u8 *buffer2, size_t buffer2_len,
382 struct dmx_ts_feed *feed, enum dmx_success success)
384 struct dmxdev_filter *dmxdevfilter = feed->priv;
385 struct dmxdev_buffer *buffer;
388 spin_lock(&dmxdevfilter->dev->lock);
389 if (dmxdevfilter->params.pes.output==DMX_OUT_DECODER) {
390 spin_unlock(&dmxdevfilter->dev->lock);
394 if (dmxdevfilter->params.pes.output==DMX_OUT_TAP)
395 buffer=&dmxdevfilter->buffer;
397 buffer=&dmxdevfilter->dev->dvr_buffer;
399 spin_unlock(&dmxdevfilter->dev->lock);
400 wake_up(&buffer->queue);
403 ret=dvb_dmxdev_buffer_write(buffer, buffer1, buffer1_len);
404 if (ret==buffer1_len)
405 ret=dvb_dmxdev_buffer_write(buffer, buffer2, buffer2_len);
407 buffer->pwrite=buffer->pread;
408 buffer->error=-EOVERFLOW;
410 spin_unlock(&dmxdevfilter->dev->lock);
411 wake_up(&buffer->queue);
416 /* stop feed but only mark the specified filter as stopped (state set) */
418 static int dvb_dmxdev_feed_stop(struct dmxdev_filter *dmxdevfilter)
420 dvb_dmxdev_filter_state_set(dmxdevfilter, DMXDEV_STATE_SET);
422 switch (dmxdevfilter->type) {
423 case DMXDEV_TYPE_SEC:
424 del_timer(&dmxdevfilter->timer);
425 dmxdevfilter->feed.sec->stop_filtering(dmxdevfilter->feed.sec);
427 case DMXDEV_TYPE_PES:
428 dmxdevfilter->feed.ts->stop_filtering(dmxdevfilter->feed.ts);
437 /* start feed associated with the specified filter */
439 static int dvb_dmxdev_feed_start(struct dmxdev_filter *filter)
441 dvb_dmxdev_filter_state_set (filter, DMXDEV_STATE_GO);
443 switch (filter->type) {
444 case DMXDEV_TYPE_SEC:
445 return filter->feed.sec->start_filtering(filter->feed.sec);
447 case DMXDEV_TYPE_PES:
448 return filter->feed.ts->start_filtering(filter->feed.ts);
458 /* restart section feed if it has filters left associated with it,
459 otherwise release the feed */
461 static int dvb_dmxdev_feed_restart(struct dmxdev_filter *filter)
464 struct dmxdev *dmxdev = filter->dev;
465 u16 pid = filter->params.sec.pid;
467 for (i=0; i<dmxdev->filternum; i++)
468 if (dmxdev->filter[i].state>=DMXDEV_STATE_GO &&
469 dmxdev->filter[i].type==DMXDEV_TYPE_SEC &&
470 dmxdev->filter[i].pid==pid) {
471 dvb_dmxdev_feed_start(&dmxdev->filter[i]);
475 filter->dev->demux->release_section_feed(dmxdev->demux, filter->feed.sec);
480 static int dvb_dmxdev_filter_stop(struct dmxdev_filter *dmxdevfilter)
482 if (dmxdevfilter->state<DMXDEV_STATE_GO)
485 switch (dmxdevfilter->type) {
486 case DMXDEV_TYPE_SEC:
487 if (!dmxdevfilter->feed.sec)
489 dvb_dmxdev_feed_stop(dmxdevfilter);
490 if (dmxdevfilter->filter.sec)
491 dmxdevfilter->feed.sec->
492 release_filter(dmxdevfilter->feed.sec,
493 dmxdevfilter->filter.sec);
494 dvb_dmxdev_feed_restart(dmxdevfilter);
495 dmxdevfilter->feed.sec=NULL;
497 case DMXDEV_TYPE_PES:
498 if (!dmxdevfilter->feed.ts)
500 dvb_dmxdev_feed_stop(dmxdevfilter);
501 dmxdevfilter->dev->demux->
502 release_ts_feed(dmxdevfilter->dev->demux,
503 dmxdevfilter->feed.ts);
504 dmxdevfilter->feed.ts=NULL;
507 if (dmxdevfilter->state==DMXDEV_STATE_ALLOCATED)
511 dmxdevfilter->buffer.pwrite=dmxdevfilter->buffer.pread=0;
515 static inline int dvb_dmxdev_filter_reset(struct dmxdev_filter *dmxdevfilter)
517 if (dmxdevfilter->state<DMXDEV_STATE_SET)
520 dmxdevfilter->type=DMXDEV_TYPE_NONE;
521 dmxdevfilter->pid=0xffff;
522 dvb_dmxdev_filter_state_set(dmxdevfilter, DMXDEV_STATE_ALLOCATED);
526 static int dvb_dmxdev_filter_start(struct dmxdev_filter *filter)
528 struct dmxdev *dmxdev = filter->dev;
532 if (filter->state < DMXDEV_STATE_SET)
535 if (filter->state >= DMXDEV_STATE_GO)
536 dvb_dmxdev_filter_stop(filter);
538 if (!(mem = filter->buffer.data)) {
539 mem = vmalloc(filter->buffer.size);
540 spin_lock_irq(&filter->dev->lock);
541 filter->buffer.data=mem;
542 spin_unlock_irq(&filter->dev->lock);
543 if (!filter->buffer.data)
547 filter->buffer.pwrite = filter->buffer.pread = 0;
549 switch (filter->type) {
550 case DMXDEV_TYPE_SEC:
552 struct dmx_sct_filter_params *para=&filter->params.sec;
553 struct dmx_section_filter **secfilter=&filter->filter.sec;
554 struct dmx_section_feed **secfeed=&filter->feed.sec;
559 /* find active filter/feed with same PID */
560 for (i=0; i<dmxdev->filternum; i++) {
561 if (dmxdev->filter[i].state >= DMXDEV_STATE_GO &&
562 dmxdev->filter[i].pid == para->pid &&
563 dmxdev->filter[i].type == DMXDEV_TYPE_SEC) {
564 *secfeed = dmxdev->filter[i].feed.sec;
569 /* if no feed found, try to allocate new one */
571 ret=dmxdev->demux->allocate_section_feed(dmxdev->demux,
573 dvb_dmxdev_section_callback);
575 printk ("DVB (%s): could not alloc feed\n",
580 ret=(*secfeed)->set(*secfeed, para->pid, 32768, 0,
581 (para->flags & DMX_CHECK_CRC) ? 1 : 0);
584 printk ("DVB (%s): could not set feed\n",
586 dvb_dmxdev_feed_restart(filter);
590 dvb_dmxdev_feed_stop(filter);
593 ret=(*secfeed)->allocate_filter(*secfeed, secfilter);
596 dvb_dmxdev_feed_restart(filter);
597 filter->feed.sec->start_filtering(*secfeed);
598 dprintk ("could not get filter\n");
602 (*secfilter)->priv = filter;
604 memcpy(&((*secfilter)->filter_value[3]),
605 &(para->filter.filter[1]), DMX_FILTER_SIZE-1);
606 memcpy(&(*secfilter)->filter_mask[3],
607 ¶->filter.mask[1], DMX_FILTER_SIZE-1);
608 memcpy(&(*secfilter)->filter_mode[3],
609 ¶->filter.mode[1], DMX_FILTER_SIZE-1);
611 (*secfilter)->filter_value[0]=para->filter.filter[0];
612 (*secfilter)->filter_mask[0]=para->filter.mask[0];
613 (*secfilter)->filter_mode[0]=para->filter.mode[0];
614 (*secfilter)->filter_mask[1]=0;
615 (*secfilter)->filter_mask[2]=0;
619 ret = filter->feed.sec->start_filtering (filter->feed.sec);
624 dvb_dmxdev_filter_timer(filter);
628 case DMXDEV_TYPE_PES:
630 struct timespec timeout = { 0 };
631 struct dmx_pes_filter_params *para = &filter->params.pes;
635 enum dmx_ts_pes ts_pes;
636 struct dmx_ts_feed **tsfeed = &filter->feed.ts;
638 filter->feed.ts = NULL;
641 ts_pes=(enum dmx_ts_pes) para->pes_type;
643 if (ts_pes<DMX_PES_OTHER)
648 if (otype == DMX_OUT_TS_TAP)
649 ts_type |= TS_PACKET;
651 if (otype == DMX_OUT_TAP)
652 ts_type |= TS_PAYLOAD_ONLY|TS_PACKET;
654 ret=dmxdev->demux->allocate_ts_feed(dmxdev->demux,
656 dvb_dmxdev_ts_callback);
660 (*tsfeed)->priv = (void *) filter;
662 ret = (*tsfeed)->set(*tsfeed, para->pid, ts_type, ts_pes,
663 188, 32768, 0, timeout);
666 dmxdev->demux->release_ts_feed(dmxdev->demux, *tsfeed);
670 ret = filter->feed.ts->start_filtering(filter->feed.ts);
673 dmxdev->demux->release_ts_feed(dmxdev->demux, *tsfeed);
683 dvb_dmxdev_filter_state_set(filter, DMXDEV_STATE_GO);
687 static int dvb_demux_open(struct inode *inode, struct file *file)
689 struct dvb_device *dvbdev = file->private_data;
690 struct dmxdev *dmxdev = dvbdev->priv;
692 struct dmxdev_filter *dmxdevfilter;
697 if (down_interruptible(&dmxdev->mutex))
700 for (i=0; i<dmxdev->filternum; i++)
701 if (dmxdev->filter[i].state==DMXDEV_STATE_FREE)
704 if (i==dmxdev->filternum) {
709 dmxdevfilter=&dmxdev->filter[i];
710 sema_init(&dmxdevfilter->mutex, 1);
711 dmxdevfilter->dvbdev=dmxdev->dvbdev;
712 file->private_data=dmxdevfilter;
714 dvb_dmxdev_buffer_init(&dmxdevfilter->buffer);
715 dmxdevfilter->type=DMXDEV_TYPE_NONE;
716 dvb_dmxdev_filter_state_set(dmxdevfilter, DMXDEV_STATE_ALLOCATED);
717 dmxdevfilter->feed.ts=NULL;
718 init_timer(&dmxdevfilter->timer);
725 static int dvb_dmxdev_filter_free(struct dmxdev *dmxdev, struct dmxdev_filter *dmxdevfilter)
727 if (down_interruptible(&dmxdev->mutex))
730 if (down_interruptible(&dmxdevfilter->mutex)) {
735 dvb_dmxdev_filter_stop(dmxdevfilter);
736 dvb_dmxdev_filter_reset(dmxdevfilter);
738 if (dmxdevfilter->buffer.data) {
739 void *mem=dmxdevfilter->buffer.data;
741 spin_lock_irq(&dmxdev->lock);
742 dmxdevfilter->buffer.data=NULL;
743 spin_unlock_irq(&dmxdev->lock);
747 dvb_dmxdev_filter_state_set(dmxdevfilter, DMXDEV_STATE_FREE);
748 wake_up(&dmxdevfilter->buffer.queue);
749 up(&dmxdevfilter->mutex);
754 static inline void invert_mode(dmx_filter_t *filter)
758 for (i=0; i<DMX_FILTER_SIZE; i++)
759 filter->mode[i]^=0xff;
763 static int dvb_dmxdev_filter_set(struct dmxdev *dmxdev,
764 struct dmxdev_filter *dmxdevfilter,
765 struct dmx_sct_filter_params *params)
767 dprintk ("function : %s\n", __FUNCTION__);
769 dvb_dmxdev_filter_stop(dmxdevfilter);
771 dmxdevfilter->type=DMXDEV_TYPE_SEC;
772 dmxdevfilter->pid=params->pid;
773 memcpy(&dmxdevfilter->params.sec,
774 params, sizeof(struct dmx_sct_filter_params));
775 invert_mode(&dmxdevfilter->params.sec.filter);
776 dvb_dmxdev_filter_state_set(dmxdevfilter, DMXDEV_STATE_SET);
778 if (params->flags&DMX_IMMEDIATE_START)
779 return dvb_dmxdev_filter_start(dmxdevfilter);
784 static int dvb_dmxdev_pes_filter_set(struct dmxdev *dmxdev,
785 struct dmxdev_filter *dmxdevfilter,
786 struct dmx_pes_filter_params *params)
788 dvb_dmxdev_filter_stop(dmxdevfilter);
790 if (params->pes_type>DMX_PES_OTHER || params->pes_type<0)
793 dmxdevfilter->type=DMXDEV_TYPE_PES;
794 dmxdevfilter->pid=params->pid;
795 memcpy(&dmxdevfilter->params, params, sizeof(struct dmx_pes_filter_params));
797 dvb_dmxdev_filter_state_set(dmxdevfilter, DMXDEV_STATE_SET);
799 if (params->flags&DMX_IMMEDIATE_START)
800 return dvb_dmxdev_filter_start(dmxdevfilter);
805 static ssize_t dvb_dmxdev_read_sec(struct dmxdev_filter *dfil,
806 struct file *file, char __user *buf, size_t count, loff_t *ppos)
815 result=dvb_dmxdev_buffer_read(&dfil->buffer, file->f_flags&O_NONBLOCK,
821 if (copy_from_user(dfil->secheader-dfil->todo, buf, result))
829 dfil->todo=((dfil->secheader[1]<<8)|dfil->secheader[2])&0xfff;
833 if (count>dfil->todo)
835 result=dvb_dmxdev_buffer_read(&dfil->buffer, file->f_flags&O_NONBLOCK,
840 return (result+done);
845 dvb_demux_read(struct file *file, char __user *buf, size_t count, loff_t *ppos)
847 struct dmxdev_filter *dmxdevfilter=dvb_dmxdev_file_to_filter(file);
850 if (down_interruptible(&dmxdevfilter->mutex))
853 if (dmxdevfilter->type==DMXDEV_TYPE_SEC)
854 ret=dvb_dmxdev_read_sec(dmxdevfilter, file, buf, count, ppos);
856 ret=dvb_dmxdev_buffer_read(&dmxdevfilter->buffer,
857 file->f_flags&O_NONBLOCK,
860 up(&dmxdevfilter->mutex);
865 static int dvb_demux_do_ioctl(struct inode *inode, struct file *file,
866 unsigned int cmd, void *parg)
868 struct dmxdev_filter *dmxdevfilter=dvb_dmxdev_file_to_filter(file);
869 struct dmxdev *dmxdev=dmxdevfilter->dev;
870 unsigned long arg=(unsigned long) parg;
873 if (down_interruptible (&dmxdev->mutex))
878 if (down_interruptible(&dmxdevfilter->mutex)) {
882 if (dmxdevfilter->state<DMXDEV_STATE_SET)
885 ret = dvb_dmxdev_filter_start(dmxdevfilter);
886 up(&dmxdevfilter->mutex);
890 if (down_interruptible(&dmxdevfilter->mutex)) {
894 ret=dvb_dmxdev_filter_stop(dmxdevfilter);
895 up(&dmxdevfilter->mutex);
899 if (down_interruptible(&dmxdevfilter->mutex)) {
903 ret = dvb_dmxdev_filter_set(dmxdev, dmxdevfilter,
904 (struct dmx_sct_filter_params *)parg);
905 up(&dmxdevfilter->mutex);
908 case DMX_SET_PES_FILTER:
909 if (down_interruptible(&dmxdevfilter->mutex)) {
913 ret=dvb_dmxdev_pes_filter_set(dmxdev, dmxdevfilter,
914 (struct dmx_pes_filter_params *)parg);
915 up(&dmxdevfilter->mutex);
918 case DMX_SET_BUFFER_SIZE:
919 if (down_interruptible(&dmxdevfilter->mutex)) {
923 ret=dvb_dmxdev_set_buffer_size(dmxdevfilter, arg);
924 up(&dmxdevfilter->mutex);
930 case DMX_GET_PES_PIDS:
931 if (!dmxdev->demux->get_pes_pids) {
935 dmxdev->demux->get_pes_pids(dmxdev->demux, (u16 *)parg);
939 if (!dmxdev->demux->get_stc) {
943 ret = dmxdev->demux->get_stc(dmxdev->demux,
944 ((struct dmx_stc *)parg)->num,
945 &((struct dmx_stc *)parg)->stc,
946 &((struct dmx_stc *)parg)->base);
956 static int dvb_demux_ioctl(struct inode *inode, struct file *file,
957 unsigned int cmd, unsigned long arg)
959 return dvb_usercopy(inode, file, cmd, arg, dvb_demux_do_ioctl);
963 static unsigned int dvb_demux_poll (struct file *file, poll_table *wait)
965 struct dmxdev_filter *dmxdevfilter = dvb_dmxdev_file_to_filter(file);
966 unsigned int mask = 0;
971 poll_wait(file, &dmxdevfilter->buffer.queue, wait);
973 if (dmxdevfilter->state != DMXDEV_STATE_GO &&
974 dmxdevfilter->state != DMXDEV_STATE_DONE &&
975 dmxdevfilter->state != DMXDEV_STATE_TIMEDOUT)
978 if (dmxdevfilter->buffer.error)
979 mask |= (POLLIN | POLLRDNORM | POLLPRI | POLLERR);
981 if (dmxdevfilter->buffer.pread != dmxdevfilter->buffer.pwrite)
982 mask |= (POLLIN | POLLRDNORM | POLLPRI);
988 static int dvb_demux_release(struct inode *inode, struct file *file)
990 struct dmxdev_filter *dmxdevfilter = dvb_dmxdev_file_to_filter(file);
991 struct dmxdev *dmxdev = dmxdevfilter->dev;
993 return dvb_dmxdev_filter_free(dmxdev, dmxdevfilter);
997 static struct file_operations dvb_demux_fops = {
998 .owner = THIS_MODULE,
999 .read = dvb_demux_read,
1000 .ioctl = dvb_demux_ioctl,
1001 .open = dvb_demux_open,
1002 .release = dvb_demux_release,
1003 .poll = dvb_demux_poll,
1007 static struct dvb_device dvbdev_demux = {
1011 .fops = &dvb_demux_fops
1015 static int dvb_dvr_do_ioctl(struct inode *inode, struct file *file,
1016 unsigned int cmd, void *parg)
1018 struct dvb_device *dvbdev = file->private_data;
1019 struct dmxdev *dmxdev = dvbdev->priv;
1023 if (down_interruptible (&dmxdev->mutex))
1024 return -ERESTARTSYS;
1027 case DMX_SET_BUFFER_SIZE:
1040 static int dvb_dvr_ioctl(struct inode *inode, struct file *file,
1041 unsigned int cmd, unsigned long arg)
1043 return dvb_usercopy(inode, file, cmd, arg, dvb_dvr_do_ioctl);
1047 static unsigned int dvb_dvr_poll (struct file *file, poll_table *wait)
1049 struct dvb_device *dvbdev = file->private_data;
1050 struct dmxdev *dmxdev = dvbdev->priv;
1051 unsigned int mask = 0;
1053 dprintk ("function : %s\n", __FUNCTION__);
1055 poll_wait(file, &dmxdev->dvr_buffer.queue, wait);
1057 if ((file->f_flags&O_ACCMODE) == O_RDONLY) {
1058 if (dmxdev->dvr_buffer.error)
1059 mask |= (POLLIN | POLLRDNORM | POLLPRI | POLLERR);
1061 if (dmxdev->dvr_buffer.pread!=dmxdev->dvr_buffer.pwrite)
1062 mask |= (POLLIN | POLLRDNORM | POLLPRI);
1064 mask |= (POLLOUT | POLLWRNORM | POLLPRI);
1070 static struct file_operations dvb_dvr_fops = {
1071 .owner = THIS_MODULE,
1072 .read = dvb_dvr_read,
1073 .write = dvb_dvr_write,
1074 .ioctl = dvb_dvr_ioctl,
1075 .open = dvb_dvr_open,
1076 .release = dvb_dvr_release,
1077 .poll = dvb_dvr_poll,
1080 static struct dvb_device dvbdev_dvr = {
1084 .fops = &dvb_dvr_fops
1088 dvb_dmxdev_init(struct dmxdev *dmxdev, struct dvb_adapter *dvb_adapter)
1092 if (dmxdev->demux->open(dmxdev->demux) < 0)
1095 dmxdev->filter = vmalloc(dmxdev->filternum*sizeof(struct dmxdev_filter));
1096 if (!dmxdev->filter)
1099 dmxdev->dvr = vmalloc(dmxdev->filternum*sizeof(struct dmxdev_dvr));
1101 vfree(dmxdev->filter);
1102 dmxdev->filter = NULL;
1106 sema_init(&dmxdev->mutex, 1);
1107 spin_lock_init(&dmxdev->lock);
1108 for (i=0; i<dmxdev->filternum; i++) {
1109 dmxdev->filter[i].dev=dmxdev;
1110 dmxdev->filter[i].buffer.data=NULL;
1111 dvb_dmxdev_filter_state_set(&dmxdev->filter[i], DMXDEV_STATE_FREE);
1112 dmxdev->dvr[i].dev=dmxdev;
1113 dmxdev->dvr[i].buffer.data=NULL;
1114 dvb_dmxdev_filter_state_set(&dmxdev->filter[i], DMXDEV_STATE_FREE);
1115 dvb_dmxdev_dvr_state_set(&dmxdev->dvr[i], DMXDEV_STATE_FREE);
1118 dvb_register_device(dvb_adapter, &dmxdev->dvbdev, &dvbdev_demux, dmxdev, DVB_DEVICE_DEMUX);
1119 dvb_register_device(dvb_adapter, &dmxdev->dvr_dvbdev, &dvbdev_dvr, dmxdev, DVB_DEVICE_DVR);
1121 dvb_dmxdev_buffer_init(&dmxdev->dvr_buffer);
1125 EXPORT_SYMBOL(dvb_dmxdev_init);
1128 dvb_dmxdev_release(struct dmxdev *dmxdev)
1130 dvb_unregister_device(dmxdev->dvbdev);
1131 dvb_unregister_device(dmxdev->dvr_dvbdev);
1133 vfree(dmxdev->filter);
1134 dmxdev->filter=NULL;
1137 dmxdev->demux->close(dmxdev->demux);
1139 EXPORT_SYMBOL(dvb_dmxdev_release);