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 void dvb_dmxdev_buffer_init(struct dmxdev_buffer *buffer)
52 init_waitqueue_head(&buffer->queue);
55 static inline int dvb_dmxdev_buffer_write(struct dmxdev_buffer *buf, const u8 *src, int len)
66 free=buf->pread-buf->pwrite;
70 split=buf->size-buf->pwrite;
73 dprintk("dmxdev: buffer overflow\n");
80 memcpy(buf->data + buf->pwrite, src, split);
84 memcpy(buf->data + buf->pwrite, src+split, todo);
85 buf->pwrite=(buf->pwrite+todo)%buf->size;
89 static ssize_t dvb_dmxdev_buffer_read(struct dmxdev_buffer *src,
90 int non_blocking, char __user *buf, size_t count, loff_t *ppos)
92 unsigned long todo=count;
93 int split, avail, error;
98 if ((error=src->error)) {
99 src->pwrite=src->pread;
104 if (non_blocking && (src->pwrite==src->pread))
108 if (non_blocking && (src->pwrite==src->pread))
109 return (count-todo) ? (count-todo) : -EWOULDBLOCK;
111 if (wait_event_interruptible(src->queue,
112 (src->pread!=src->pwrite) ||
116 if ((error=src->error)) {
117 src->pwrite=src->pread;
123 avail=src->pwrite - src->pread;
126 split=src->size - src->pread;
131 if (copy_to_user(buf, src->data+src->pread, split))
139 if (copy_to_user(buf, src->data+src->pread, avail))
141 src->pread = (src->pread + avail) % src->size;
149 static struct dmx_frontend * get_fe(struct dmx_demux *demux, int type)
151 struct list_head *head, *pos;
153 head=demux->get_frontends(demux);
156 list_for_each(pos, head)
157 if (DMX_FE_ENTRY(pos)->source==type)
158 return DMX_FE_ENTRY(pos);
163 static int dvb_dvr_open(struct inode *inode, struct file *file)
165 struct dvb_device *dvbdev = file->private_data;
166 struct dmxdev *dmxdev = dvbdev->priv;
167 struct dmx_frontend *front;
169 dprintk ("function : %s\n", __FUNCTION__);
171 if (mutex_lock_interruptible(&dmxdev->mutex))
174 if ((file->f_flags&O_ACCMODE)==O_RDWR) {
175 if (!(dmxdev->capabilities&DMXDEV_CAP_DUPLEX)) {
176 mutex_unlock(&dmxdev->mutex);
181 if ((file->f_flags&O_ACCMODE)==O_RDONLY) {
182 dvb_dmxdev_buffer_init(&dmxdev->dvr_buffer);
183 dmxdev->dvr_buffer.size=DVR_BUFFER_SIZE;
184 dmxdev->dvr_buffer.data=vmalloc(DVR_BUFFER_SIZE);
185 if (!dmxdev->dvr_buffer.data) {
186 mutex_unlock(&dmxdev->mutex);
191 if ((file->f_flags&O_ACCMODE)==O_WRONLY) {
192 dmxdev->dvr_orig_fe=dmxdev->demux->frontend;
194 if (!dmxdev->demux->write) {
195 mutex_unlock(&dmxdev->mutex);
199 front=get_fe(dmxdev->demux, DMX_MEMORY_FE);
202 mutex_unlock(&dmxdev->mutex);
205 dmxdev->demux->disconnect_frontend(dmxdev->demux);
206 dmxdev->demux->connect_frontend(dmxdev->demux, front);
208 mutex_unlock(&dmxdev->mutex);
212 static int dvb_dvr_release(struct inode *inode, struct file *file)
214 struct dvb_device *dvbdev = file->private_data;
215 struct dmxdev *dmxdev = dvbdev->priv;
217 if (mutex_lock_interruptible(&dmxdev->mutex))
220 if ((file->f_flags&O_ACCMODE)==O_WRONLY) {
221 dmxdev->demux->disconnect_frontend(dmxdev->demux);
222 dmxdev->demux->connect_frontend(dmxdev->demux,
223 dmxdev->dvr_orig_fe);
225 if ((file->f_flags&O_ACCMODE)==O_RDONLY) {
226 if (dmxdev->dvr_buffer.data) {
227 void *mem=dmxdev->dvr_buffer.data;
229 spin_lock_irq(&dmxdev->lock);
230 dmxdev->dvr_buffer.data=NULL;
231 spin_unlock_irq(&dmxdev->lock);
235 mutex_unlock(&dmxdev->mutex);
239 static ssize_t dvb_dvr_write(struct file *file, const char __user *buf,
240 size_t count, loff_t *ppos)
242 struct dvb_device *dvbdev = file->private_data;
243 struct dmxdev *dmxdev = dvbdev->priv;
246 if (!dmxdev->demux->write)
248 if ((file->f_flags&O_ACCMODE)!=O_WRONLY)
250 if (mutex_lock_interruptible(&dmxdev->mutex))
252 ret=dmxdev->demux->write(dmxdev->demux, buf, count);
253 mutex_unlock(&dmxdev->mutex);
257 static ssize_t dvb_dvr_read(struct file *file, char __user *buf, size_t count,
260 struct dvb_device *dvbdev = file->private_data;
261 struct dmxdev *dmxdev = dvbdev->priv;
264 //mutex_lock(&dmxdev->mutex);
265 ret= dvb_dmxdev_buffer_read(&dmxdev->dvr_buffer,
266 file->f_flags&O_NONBLOCK,
268 //mutex_unlock(&dmxdev->mutex);
272 static inline void dvb_dmxdev_filter_state_set(struct dmxdev_filter *dmxdevfilter, int state)
274 spin_lock_irq(&dmxdevfilter->dev->lock);
275 dmxdevfilter->state=state;
276 spin_unlock_irq(&dmxdevfilter->dev->lock);
279 static int dvb_dmxdev_set_buffer_size(struct dmxdev_filter *dmxdevfilter, unsigned long size)
281 struct dmxdev_buffer *buf=&dmxdevfilter->buffer;
286 if (dmxdevfilter->state>=DMXDEV_STATE_GO)
288 spin_lock_irq(&dmxdevfilter->dev->lock);
292 buf->pwrite=buf->pread=0;
293 spin_unlock_irq(&dmxdevfilter->dev->lock);
297 mem=vmalloc(dmxdevfilter->buffer.size);
300 spin_lock_irq(&dmxdevfilter->dev->lock);
302 spin_unlock_irq(&dmxdevfilter->dev->lock);
307 static void dvb_dmxdev_filter_timeout(unsigned long data)
309 struct dmxdev_filter *dmxdevfilter=(struct dmxdev_filter *)data;
311 dmxdevfilter->buffer.error=-ETIMEDOUT;
312 spin_lock_irq(&dmxdevfilter->dev->lock);
313 dmxdevfilter->state=DMXDEV_STATE_TIMEDOUT;
314 spin_unlock_irq(&dmxdevfilter->dev->lock);
315 wake_up(&dmxdevfilter->buffer.queue);
318 static void dvb_dmxdev_filter_timer(struct dmxdev_filter *dmxdevfilter)
320 struct dmx_sct_filter_params *para=&dmxdevfilter->params.sec;
322 del_timer(&dmxdevfilter->timer);
324 dmxdevfilter->timer.function=dvb_dmxdev_filter_timeout;
325 dmxdevfilter->timer.data=(unsigned long) dmxdevfilter;
326 dmxdevfilter->timer.expires=jiffies+1+(HZ/2+HZ*para->timeout)/1000;
327 add_timer(&dmxdevfilter->timer);
331 static int dvb_dmxdev_section_callback(const u8 *buffer1, size_t buffer1_len,
332 const u8 *buffer2, size_t buffer2_len,
333 struct dmx_section_filter *filter, enum dmx_success success)
335 struct dmxdev_filter *dmxdevfilter = filter->priv;
338 if (dmxdevfilter->buffer.error) {
339 wake_up(&dmxdevfilter->buffer.queue);
342 spin_lock(&dmxdevfilter->dev->lock);
343 if (dmxdevfilter->state!=DMXDEV_STATE_GO) {
344 spin_unlock(&dmxdevfilter->dev->lock);
347 del_timer(&dmxdevfilter->timer);
348 dprintk("dmxdev: section callback %02x %02x %02x %02x %02x %02x\n",
349 buffer1[0], buffer1[1],
350 buffer1[2], buffer1[3],
351 buffer1[4], buffer1[5]);
352 ret=dvb_dmxdev_buffer_write(&dmxdevfilter->buffer, buffer1, buffer1_len);
353 if (ret==buffer1_len) {
354 ret=dvb_dmxdev_buffer_write(&dmxdevfilter->buffer, buffer2, buffer2_len);
357 dmxdevfilter->buffer.pwrite=dmxdevfilter->buffer.pread;
358 dmxdevfilter->buffer.error=-EOVERFLOW;
360 if (dmxdevfilter->params.sec.flags&DMX_ONESHOT)
361 dmxdevfilter->state=DMXDEV_STATE_DONE;
362 spin_unlock(&dmxdevfilter->dev->lock);
363 wake_up(&dmxdevfilter->buffer.queue);
367 static int dvb_dmxdev_ts_callback(const u8 *buffer1, size_t buffer1_len,
368 const u8 *buffer2, size_t buffer2_len,
369 struct dmx_ts_feed *feed, enum dmx_success success)
371 struct dmxdev_filter *dmxdevfilter = feed->priv;
372 struct dmxdev_buffer *buffer;
375 spin_lock(&dmxdevfilter->dev->lock);
376 if (dmxdevfilter->params.pes.output==DMX_OUT_DECODER) {
377 spin_unlock(&dmxdevfilter->dev->lock);
381 if (dmxdevfilter->params.pes.output==DMX_OUT_TAP)
382 buffer=&dmxdevfilter->buffer;
384 buffer=&dmxdevfilter->dev->dvr_buffer;
386 spin_unlock(&dmxdevfilter->dev->lock);
387 wake_up(&buffer->queue);
390 ret=dvb_dmxdev_buffer_write(buffer, buffer1, buffer1_len);
391 if (ret==buffer1_len)
392 ret=dvb_dmxdev_buffer_write(buffer, buffer2, buffer2_len);
394 buffer->pwrite=buffer->pread;
395 buffer->error=-EOVERFLOW;
397 spin_unlock(&dmxdevfilter->dev->lock);
398 wake_up(&buffer->queue);
403 /* stop feed but only mark the specified filter as stopped (state set) */
405 static int dvb_dmxdev_feed_stop(struct dmxdev_filter *dmxdevfilter)
407 dvb_dmxdev_filter_state_set(dmxdevfilter, DMXDEV_STATE_SET);
409 switch (dmxdevfilter->type) {
410 case DMXDEV_TYPE_SEC:
411 del_timer(&dmxdevfilter->timer);
412 dmxdevfilter->feed.sec->stop_filtering(dmxdevfilter->feed.sec);
414 case DMXDEV_TYPE_PES:
415 dmxdevfilter->feed.ts->stop_filtering(dmxdevfilter->feed.ts);
424 /* start feed associated with the specified filter */
426 static int dvb_dmxdev_feed_start(struct dmxdev_filter *filter)
428 dvb_dmxdev_filter_state_set (filter, DMXDEV_STATE_GO);
430 switch (filter->type) {
431 case DMXDEV_TYPE_SEC:
432 return filter->feed.sec->start_filtering(filter->feed.sec);
434 case DMXDEV_TYPE_PES:
435 return filter->feed.ts->start_filtering(filter->feed.ts);
445 /* restart section feed if it has filters left associated with it,
446 otherwise release the feed */
448 static int dvb_dmxdev_feed_restart(struct dmxdev_filter *filter)
451 struct dmxdev *dmxdev = filter->dev;
452 u16 pid = filter->params.sec.pid;
454 for (i=0; i<dmxdev->filternum; i++)
455 if (dmxdev->filter[i].state>=DMXDEV_STATE_GO &&
456 dmxdev->filter[i].type==DMXDEV_TYPE_SEC &&
457 dmxdev->filter[i].pid==pid) {
458 dvb_dmxdev_feed_start(&dmxdev->filter[i]);
462 filter->dev->demux->release_section_feed(dmxdev->demux, filter->feed.sec);
467 static int dvb_dmxdev_filter_stop(struct dmxdev_filter *dmxdevfilter)
469 if (dmxdevfilter->state<DMXDEV_STATE_GO)
472 switch (dmxdevfilter->type) {
473 case DMXDEV_TYPE_SEC:
474 if (!dmxdevfilter->feed.sec)
476 dvb_dmxdev_feed_stop(dmxdevfilter);
477 if (dmxdevfilter->filter.sec)
478 dmxdevfilter->feed.sec->
479 release_filter(dmxdevfilter->feed.sec,
480 dmxdevfilter->filter.sec);
481 dvb_dmxdev_feed_restart(dmxdevfilter);
482 dmxdevfilter->feed.sec=NULL;
484 case DMXDEV_TYPE_PES:
485 if (!dmxdevfilter->feed.ts)
487 dvb_dmxdev_feed_stop(dmxdevfilter);
488 dmxdevfilter->dev->demux->
489 release_ts_feed(dmxdevfilter->dev->demux,
490 dmxdevfilter->feed.ts);
491 dmxdevfilter->feed.ts=NULL;
494 if (dmxdevfilter->state==DMXDEV_STATE_ALLOCATED)
498 dmxdevfilter->buffer.pwrite=dmxdevfilter->buffer.pread=0;
502 static inline int dvb_dmxdev_filter_reset(struct dmxdev_filter *dmxdevfilter)
504 if (dmxdevfilter->state<DMXDEV_STATE_SET)
507 dmxdevfilter->type=DMXDEV_TYPE_NONE;
508 dmxdevfilter->pid=0xffff;
509 dvb_dmxdev_filter_state_set(dmxdevfilter, DMXDEV_STATE_ALLOCATED);
513 static int dvb_dmxdev_filter_start(struct dmxdev_filter *filter)
515 struct dmxdev *dmxdev = filter->dev;
519 if (filter->state < DMXDEV_STATE_SET)
522 if (filter->state >= DMXDEV_STATE_GO)
523 dvb_dmxdev_filter_stop(filter);
525 if (!(mem = filter->buffer.data)) {
526 mem = vmalloc(filter->buffer.size);
527 spin_lock_irq(&filter->dev->lock);
528 filter->buffer.data=mem;
529 spin_unlock_irq(&filter->dev->lock);
530 if (!filter->buffer.data)
534 filter->buffer.pwrite = filter->buffer.pread = 0;
536 switch (filter->type) {
537 case DMXDEV_TYPE_SEC:
539 struct dmx_sct_filter_params *para=&filter->params.sec;
540 struct dmx_section_filter **secfilter=&filter->filter.sec;
541 struct dmx_section_feed **secfeed=&filter->feed.sec;
546 /* find active filter/feed with same PID */
547 for (i=0; i<dmxdev->filternum; i++) {
548 if (dmxdev->filter[i].state >= DMXDEV_STATE_GO &&
549 dmxdev->filter[i].pid == para->pid &&
550 dmxdev->filter[i].type == DMXDEV_TYPE_SEC) {
551 *secfeed = dmxdev->filter[i].feed.sec;
556 /* if no feed found, try to allocate new one */
558 ret=dmxdev->demux->allocate_section_feed(dmxdev->demux,
560 dvb_dmxdev_section_callback);
562 printk ("DVB (%s): could not alloc feed\n",
567 ret=(*secfeed)->set(*secfeed, para->pid, 32768,
568 (para->flags & DMX_CHECK_CRC) ? 1 : 0);
571 printk ("DVB (%s): could not set feed\n",
573 dvb_dmxdev_feed_restart(filter);
577 dvb_dmxdev_feed_stop(filter);
580 ret=(*secfeed)->allocate_filter(*secfeed, secfilter);
583 dvb_dmxdev_feed_restart(filter);
584 filter->feed.sec->start_filtering(*secfeed);
585 dprintk ("could not get filter\n");
589 (*secfilter)->priv = filter;
591 memcpy(&((*secfilter)->filter_value[3]),
592 &(para->filter.filter[1]), DMX_FILTER_SIZE-1);
593 memcpy(&(*secfilter)->filter_mask[3],
594 ¶->filter.mask[1], DMX_FILTER_SIZE-1);
595 memcpy(&(*secfilter)->filter_mode[3],
596 ¶->filter.mode[1], DMX_FILTER_SIZE-1);
598 (*secfilter)->filter_value[0]=para->filter.filter[0];
599 (*secfilter)->filter_mask[0]=para->filter.mask[0];
600 (*secfilter)->filter_mode[0]=para->filter.mode[0];
601 (*secfilter)->filter_mask[1]=0;
602 (*secfilter)->filter_mask[2]=0;
606 ret = filter->feed.sec->start_filtering (filter->feed.sec);
611 dvb_dmxdev_filter_timer(filter);
615 case DMXDEV_TYPE_PES:
617 struct timespec timeout = { 0 };
618 struct dmx_pes_filter_params *para = &filter->params.pes;
622 enum dmx_ts_pes ts_pes;
623 struct dmx_ts_feed **tsfeed = &filter->feed.ts;
625 filter->feed.ts = NULL;
628 ts_pes=(enum dmx_ts_pes) para->pes_type;
630 if (ts_pes<DMX_PES_OTHER)
635 if (otype == DMX_OUT_TS_TAP)
636 ts_type |= TS_PACKET;
638 if (otype == DMX_OUT_TAP)
639 ts_type |= TS_PAYLOAD_ONLY|TS_PACKET;
641 ret=dmxdev->demux->allocate_ts_feed(dmxdev->demux,
643 dvb_dmxdev_ts_callback);
647 (*tsfeed)->priv = (void *) filter;
649 ret = (*tsfeed)->set(*tsfeed, para->pid, ts_type, ts_pes,
653 dmxdev->demux->release_ts_feed(dmxdev->demux, *tsfeed);
657 ret = filter->feed.ts->start_filtering(filter->feed.ts);
660 dmxdev->demux->release_ts_feed(dmxdev->demux, *tsfeed);
670 dvb_dmxdev_filter_state_set(filter, DMXDEV_STATE_GO);
674 static int dvb_demux_open(struct inode *inode, struct file *file)
676 struct dvb_device *dvbdev = file->private_data;
677 struct dmxdev *dmxdev = dvbdev->priv;
679 struct dmxdev_filter *dmxdevfilter;
684 if (mutex_lock_interruptible(&dmxdev->mutex))
687 for (i=0; i<dmxdev->filternum; i++)
688 if (dmxdev->filter[i].state==DMXDEV_STATE_FREE)
691 if (i==dmxdev->filternum) {
692 mutex_unlock(&dmxdev->mutex);
696 dmxdevfilter=&dmxdev->filter[i];
697 mutex_init(&dmxdevfilter->mutex);
698 dmxdevfilter->dvbdev=dmxdev->dvbdev;
699 file->private_data=dmxdevfilter;
701 dvb_dmxdev_buffer_init(&dmxdevfilter->buffer);
702 dmxdevfilter->type=DMXDEV_TYPE_NONE;
703 dvb_dmxdev_filter_state_set(dmxdevfilter, DMXDEV_STATE_ALLOCATED);
704 dmxdevfilter->feed.ts=NULL;
705 init_timer(&dmxdevfilter->timer);
707 mutex_unlock(&dmxdev->mutex);
712 static int dvb_dmxdev_filter_free(struct dmxdev *dmxdev, struct dmxdev_filter *dmxdevfilter)
714 if (mutex_lock_interruptible(&dmxdev->mutex))
717 if (mutex_lock_interruptible(&dmxdevfilter->mutex)) {
718 mutex_unlock(&dmxdev->mutex);
722 dvb_dmxdev_filter_stop(dmxdevfilter);
723 dvb_dmxdev_filter_reset(dmxdevfilter);
725 if (dmxdevfilter->buffer.data) {
726 void *mem=dmxdevfilter->buffer.data;
728 spin_lock_irq(&dmxdev->lock);
729 dmxdevfilter->buffer.data=NULL;
730 spin_unlock_irq(&dmxdev->lock);
734 dvb_dmxdev_filter_state_set(dmxdevfilter, DMXDEV_STATE_FREE);
735 wake_up(&dmxdevfilter->buffer.queue);
736 mutex_unlock(&dmxdevfilter->mutex);
737 mutex_unlock(&dmxdev->mutex);
741 static inline void invert_mode(dmx_filter_t *filter)
745 for (i=0; i<DMX_FILTER_SIZE; i++)
746 filter->mode[i]^=0xff;
750 static int dvb_dmxdev_filter_set(struct dmxdev *dmxdev,
751 struct dmxdev_filter *dmxdevfilter,
752 struct dmx_sct_filter_params *params)
754 dprintk ("function : %s\n", __FUNCTION__);
756 dvb_dmxdev_filter_stop(dmxdevfilter);
758 dmxdevfilter->type=DMXDEV_TYPE_SEC;
759 dmxdevfilter->pid=params->pid;
760 memcpy(&dmxdevfilter->params.sec,
761 params, sizeof(struct dmx_sct_filter_params));
762 invert_mode(&dmxdevfilter->params.sec.filter);
763 dvb_dmxdev_filter_state_set(dmxdevfilter, DMXDEV_STATE_SET);
765 if (params->flags&DMX_IMMEDIATE_START)
766 return dvb_dmxdev_filter_start(dmxdevfilter);
771 static int dvb_dmxdev_pes_filter_set(struct dmxdev *dmxdev,
772 struct dmxdev_filter *dmxdevfilter,
773 struct dmx_pes_filter_params *params)
775 dvb_dmxdev_filter_stop(dmxdevfilter);
777 if (params->pes_type>DMX_PES_OTHER || params->pes_type<0)
780 dmxdevfilter->type=DMXDEV_TYPE_PES;
781 dmxdevfilter->pid=params->pid;
782 memcpy(&dmxdevfilter->params, params, sizeof(struct dmx_pes_filter_params));
784 dvb_dmxdev_filter_state_set(dmxdevfilter, DMXDEV_STATE_SET);
786 if (params->flags&DMX_IMMEDIATE_START)
787 return dvb_dmxdev_filter_start(dmxdevfilter);
792 static ssize_t dvb_dmxdev_read_sec(struct dmxdev_filter *dfil,
793 struct file *file, char __user *buf, size_t count, loff_t *ppos)
802 result=dvb_dmxdev_buffer_read(&dfil->buffer, file->f_flags&O_NONBLOCK,
808 if (copy_from_user(dfil->secheader-dfil->todo, buf, result))
816 dfil->todo=((dfil->secheader[1]<<8)|dfil->secheader[2])&0xfff;
820 if (count>dfil->todo)
822 result=dvb_dmxdev_buffer_read(&dfil->buffer, file->f_flags&O_NONBLOCK,
827 return (result+done);
832 dvb_demux_read(struct file *file, char __user *buf, size_t count, loff_t *ppos)
834 struct dmxdev_filter *dmxdevfilter= file->private_data;
837 if (mutex_lock_interruptible(&dmxdevfilter->mutex))
840 if (dmxdevfilter->type==DMXDEV_TYPE_SEC)
841 ret=dvb_dmxdev_read_sec(dmxdevfilter, file, buf, count, ppos);
843 ret=dvb_dmxdev_buffer_read(&dmxdevfilter->buffer,
844 file->f_flags&O_NONBLOCK,
847 mutex_unlock(&dmxdevfilter->mutex);
852 static int dvb_demux_do_ioctl(struct inode *inode, struct file *file,
853 unsigned int cmd, void *parg)
855 struct dmxdev_filter *dmxdevfilter = file->private_data;
856 struct dmxdev *dmxdev=dmxdevfilter->dev;
857 unsigned long arg=(unsigned long) parg;
860 if (mutex_lock_interruptible(&dmxdev->mutex))
865 if (mutex_lock_interruptible(&dmxdevfilter->mutex)) {
866 mutex_unlock(&dmxdev->mutex);
869 if (dmxdevfilter->state<DMXDEV_STATE_SET)
872 ret = dvb_dmxdev_filter_start(dmxdevfilter);
873 mutex_unlock(&dmxdevfilter->mutex);
877 if (mutex_lock_interruptible(&dmxdevfilter->mutex)) {
878 mutex_unlock(&dmxdev->mutex);
881 ret=dvb_dmxdev_filter_stop(dmxdevfilter);
882 mutex_unlock(&dmxdevfilter->mutex);
886 if (mutex_lock_interruptible(&dmxdevfilter->mutex)) {
887 mutex_unlock(&dmxdev->mutex);
890 ret = dvb_dmxdev_filter_set(dmxdev, dmxdevfilter,
891 (struct dmx_sct_filter_params *)parg);
892 mutex_unlock(&dmxdevfilter->mutex);
895 case DMX_SET_PES_FILTER:
896 if (mutex_lock_interruptible(&dmxdevfilter->mutex)) {
897 mutex_unlock(&dmxdev->mutex);
900 ret=dvb_dmxdev_pes_filter_set(dmxdev, dmxdevfilter,
901 (struct dmx_pes_filter_params *)parg);
902 mutex_unlock(&dmxdevfilter->mutex);
905 case DMX_SET_BUFFER_SIZE:
906 if (mutex_lock_interruptible(&dmxdevfilter->mutex)) {
907 mutex_unlock(&dmxdev->mutex);
910 ret=dvb_dmxdev_set_buffer_size(dmxdevfilter, arg);
911 mutex_unlock(&dmxdevfilter->mutex);
917 case DMX_GET_PES_PIDS:
918 if (!dmxdev->demux->get_pes_pids) {
922 dmxdev->demux->get_pes_pids(dmxdev->demux, (u16 *)parg);
926 if (!dmxdev->demux->get_caps) {
930 ret = dmxdev->demux->get_caps(dmxdev->demux, parg);
934 if (!dmxdev->demux->set_source) {
938 ret = dmxdev->demux->set_source(dmxdev->demux, parg);
942 if (!dmxdev->demux->get_stc) {
946 ret = dmxdev->demux->get_stc(dmxdev->demux,
947 ((struct dmx_stc *)parg)->num,
948 &((struct dmx_stc *)parg)->stc,
949 &((struct dmx_stc *)parg)->base);
955 mutex_unlock(&dmxdev->mutex);
959 static int dvb_demux_ioctl(struct inode *inode, struct file *file,
960 unsigned int cmd, unsigned long arg)
962 return dvb_usercopy(inode, file, cmd, arg, dvb_demux_do_ioctl);
966 static unsigned int dvb_demux_poll (struct file *file, poll_table *wait)
968 struct dmxdev_filter *dmxdevfilter = file->private_data;
969 unsigned int mask = 0;
974 poll_wait(file, &dmxdevfilter->buffer.queue, wait);
976 if (dmxdevfilter->state != DMXDEV_STATE_GO &&
977 dmxdevfilter->state != DMXDEV_STATE_DONE &&
978 dmxdevfilter->state != DMXDEV_STATE_TIMEDOUT)
981 if (dmxdevfilter->buffer.error)
982 mask |= (POLLIN | POLLRDNORM | POLLPRI | POLLERR);
984 if (dmxdevfilter->buffer.pread != dmxdevfilter->buffer.pwrite)
985 mask |= (POLLIN | POLLRDNORM | POLLPRI);
991 static int dvb_demux_release(struct inode *inode, struct file *file)
993 struct dmxdev_filter *dmxdevfilter = file->private_data;
994 struct dmxdev *dmxdev = dmxdevfilter->dev;
996 return dvb_dmxdev_filter_free(dmxdev, dmxdevfilter);
1000 static struct file_operations dvb_demux_fops = {
1001 .owner = THIS_MODULE,
1002 .read = dvb_demux_read,
1003 .ioctl = dvb_demux_ioctl,
1004 .open = dvb_demux_open,
1005 .release = dvb_demux_release,
1006 .poll = dvb_demux_poll,
1010 static struct dvb_device dvbdev_demux = {
1014 .fops = &dvb_demux_fops
1018 static int dvb_dvr_do_ioctl(struct inode *inode, struct file *file,
1019 unsigned int cmd, void *parg)
1021 struct dvb_device *dvbdev = file->private_data;
1022 struct dmxdev *dmxdev = dvbdev->priv;
1026 if (mutex_lock_interruptible(&dmxdev->mutex))
1027 return -ERESTARTSYS;
1030 case DMX_SET_BUFFER_SIZE:
1038 mutex_unlock(&dmxdev->mutex);
1043 static int dvb_dvr_ioctl(struct inode *inode, struct file *file,
1044 unsigned int cmd, unsigned long arg)
1046 return dvb_usercopy(inode, file, cmd, arg, dvb_dvr_do_ioctl);
1050 static unsigned int dvb_dvr_poll (struct file *file, poll_table *wait)
1052 struct dvb_device *dvbdev = file->private_data;
1053 struct dmxdev *dmxdev = dvbdev->priv;
1054 unsigned int mask = 0;
1056 dprintk ("function : %s\n", __FUNCTION__);
1058 poll_wait(file, &dmxdev->dvr_buffer.queue, wait);
1060 if ((file->f_flags&O_ACCMODE) == O_RDONLY) {
1061 if (dmxdev->dvr_buffer.error)
1062 mask |= (POLLIN | POLLRDNORM | POLLPRI | POLLERR);
1064 if (dmxdev->dvr_buffer.pread!=dmxdev->dvr_buffer.pwrite)
1065 mask |= (POLLIN | POLLRDNORM | POLLPRI);
1067 mask |= (POLLOUT | POLLWRNORM | POLLPRI);
1073 static struct file_operations dvb_dvr_fops = {
1074 .owner = THIS_MODULE,
1075 .read = dvb_dvr_read,
1076 .write = dvb_dvr_write,
1077 .ioctl = dvb_dvr_ioctl,
1078 .open = dvb_dvr_open,
1079 .release = dvb_dvr_release,
1080 .poll = dvb_dvr_poll,
1083 static struct dvb_device dvbdev_dvr = {
1087 .fops = &dvb_dvr_fops
1091 dvb_dmxdev_init(struct dmxdev *dmxdev, struct dvb_adapter *dvb_adapter)
1095 if (dmxdev->demux->open(dmxdev->demux) < 0)
1098 dmxdev->filter = vmalloc(dmxdev->filternum*sizeof(struct dmxdev_filter));
1099 if (!dmxdev->filter)
1102 mutex_init(&dmxdev->mutex);
1103 spin_lock_init(&dmxdev->lock);
1104 for (i=0; i<dmxdev->filternum; i++) {
1105 dmxdev->filter[i].dev=dmxdev;
1106 dmxdev->filter[i].buffer.data=NULL;
1107 dvb_dmxdev_filter_state_set(&dmxdev->filter[i], DMXDEV_STATE_FREE);
1110 dvb_register_device(dvb_adapter, &dmxdev->dvbdev, &dvbdev_demux, dmxdev, DVB_DEVICE_DEMUX);
1111 dvb_register_device(dvb_adapter, &dmxdev->dvr_dvbdev, &dvbdev_dvr, dmxdev, DVB_DEVICE_DVR);
1113 dvb_dmxdev_buffer_init(&dmxdev->dvr_buffer);
1117 EXPORT_SYMBOL(dvb_dmxdev_init);
1120 dvb_dmxdev_release(struct dmxdev *dmxdev)
1122 dvb_unregister_device(dmxdev->dvbdev);
1123 dvb_unregister_device(dmxdev->dvr_dvbdev);
1125 vfree(dmxdev->filter);
1126 dmxdev->filter=NULL;
1127 dmxdev->demux->close(dmxdev->demux);
1129 EXPORT_SYMBOL(dvb_dmxdev_release);