2 * dmxdev.c - DVB demultiplexer device
4 * Copyright (C) 2000 Ralph Metzler & Marcus Metzler
5 * for convergence integrated media GmbH
7 * This program is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU Lesser General Public License
9 * as published by the Free Software Foundation; either version 2.1
10 * of the License, or (at your option) any later version.
12 * This program is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 * GNU General Public License for more details.
17 * You should have received a copy of the GNU Lesser General Public License
18 * along with this program; if not, write to the Free Software
19 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
23 #include <linux/sched.h>
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/ioctl.h>
30 #include <linux/wait.h>
31 #include <asm/uaccess.h>
36 module_param(debug, int, 0644);
37 MODULE_PARM_DESC(debug, "Turn on/off debugging (default:off).");
39 #define dprintk if (debug) printk
41 static int dvb_dmxdev_buffer_write(struct dvb_ringbuffer *buf,
42 const u8 *src, size_t len)
51 free = dvb_ringbuffer_free(buf);
53 dprintk("dmxdev: buffer overflow\n");
57 return dvb_ringbuffer_write(buf, src, len);
60 static ssize_t dvb_dmxdev_buffer_read(struct dvb_ringbuffer *src,
61 int non_blocking, char __user *buf,
62 size_t count, loff_t *ppos)
73 dvb_ringbuffer_flush(src);
77 for (todo = count; todo > 0; todo -= ret) {
78 if (non_blocking && dvb_ringbuffer_empty(src)) {
83 ret = wait_event_interruptible(src->queue,
84 !dvb_ringbuffer_empty(src) ||
91 dvb_ringbuffer_flush(src);
95 avail = dvb_ringbuffer_avail(src);
99 ret = dvb_ringbuffer_read_user(src, buf, avail);
106 return (count - todo) ? (count - todo) : ret;
109 static struct dmx_frontend *get_fe(struct dmx_demux *demux, int type)
111 struct list_head *head, *pos;
113 head = demux->get_frontends(demux);
116 list_for_each(pos, head)
117 if (DMX_FE_ENTRY(pos)->source == type)
118 return DMX_FE_ENTRY(pos);
123 static int dvb_dvr_open(struct inode *inode, struct file *file)
125 struct dvb_device *dvbdev = file->private_data;
126 struct dmxdev *dmxdev = dvbdev->priv;
127 struct dmx_frontend *front;
129 dprintk("function : %s\n", __func__);
131 if (mutex_lock_interruptible(&dmxdev->mutex))
135 mutex_unlock(&dmxdev->mutex);
139 if ((file->f_flags & O_ACCMODE) == O_RDWR) {
140 if (!(dmxdev->capabilities & DMXDEV_CAP_DUPLEX)) {
141 mutex_unlock(&dmxdev->mutex);
146 if ((file->f_flags & O_ACCMODE) == O_RDONLY) {
148 if (!dvbdev->readers) {
149 mutex_unlock(&dmxdev->mutex);
152 mem = vmalloc(DVR_BUFFER_SIZE);
154 mutex_unlock(&dmxdev->mutex);
157 dvb_ringbuffer_init(&dmxdev->dvr_buffer, mem, DVR_BUFFER_SIZE);
161 if ((file->f_flags & O_ACCMODE) == O_WRONLY) {
162 dmxdev->dvr_orig_fe = dmxdev->demux->frontend;
164 if (!dmxdev->demux->write) {
165 mutex_unlock(&dmxdev->mutex);
169 front = get_fe(dmxdev->demux, DMX_MEMORY_FE);
172 mutex_unlock(&dmxdev->mutex);
175 dmxdev->demux->disconnect_frontend(dmxdev->demux);
176 dmxdev->demux->connect_frontend(dmxdev->demux, front);
179 mutex_unlock(&dmxdev->mutex);
183 static int dvb_dvr_release(struct inode *inode, struct file *file)
185 struct dvb_device *dvbdev = file->private_data;
186 struct dmxdev *dmxdev = dvbdev->priv;
188 mutex_lock(&dmxdev->mutex);
190 if ((file->f_flags & O_ACCMODE) == O_WRONLY) {
191 dmxdev->demux->disconnect_frontend(dmxdev->demux);
192 dmxdev->demux->connect_frontend(dmxdev->demux,
193 dmxdev->dvr_orig_fe);
195 if ((file->f_flags & O_ACCMODE) == O_RDONLY) {
197 if (dmxdev->dvr_buffer.data) {
198 void *mem = dmxdev->dvr_buffer.data;
200 spin_lock_irq(&dmxdev->lock);
201 dmxdev->dvr_buffer.data = NULL;
202 spin_unlock_irq(&dmxdev->lock);
208 if (dvbdev->users == 1 && dmxdev->exit == 1) {
209 fops_put(file->f_op);
211 mutex_unlock(&dmxdev->mutex);
212 wake_up(&dvbdev->wait_queue);
214 mutex_unlock(&dmxdev->mutex);
219 static ssize_t dvb_dvr_write(struct file *file, const char __user *buf,
220 size_t count, loff_t *ppos)
222 struct dvb_device *dvbdev = file->private_data;
223 struct dmxdev *dmxdev = dvbdev->priv;
226 if (!dmxdev->demux->write)
228 if ((file->f_flags & O_ACCMODE) != O_WRONLY)
230 if (mutex_lock_interruptible(&dmxdev->mutex))
234 mutex_unlock(&dmxdev->mutex);
237 ret = dmxdev->demux->write(dmxdev->demux, buf, count);
238 mutex_unlock(&dmxdev->mutex);
242 static ssize_t dvb_dvr_read(struct file *file, char __user *buf, size_t count,
245 struct dvb_device *dvbdev = file->private_data;
246 struct dmxdev *dmxdev = dvbdev->priv;
251 return dvb_dmxdev_buffer_read(&dmxdev->dvr_buffer,
252 file->f_flags & O_NONBLOCK,
256 static int dvb_dvr_set_buffer_size(struct dmxdev *dmxdev,
259 struct dvb_ringbuffer *buf = &dmxdev->dvr_buffer;
263 dprintk("function : %s\n", __func__);
265 if (buf->size == size)
270 newmem = vmalloc(size);
276 spin_lock_irq(&dmxdev->lock);
280 /* reset and not flush in case the buffer shrinks */
281 dvb_ringbuffer_reset(buf);
282 spin_unlock_irq(&dmxdev->lock);
289 static inline void dvb_dmxdev_filter_state_set(struct dmxdev_filter
290 *dmxdevfilter, int state)
292 spin_lock_irq(&dmxdevfilter->dev->lock);
293 dmxdevfilter->state = state;
294 spin_unlock_irq(&dmxdevfilter->dev->lock);
297 static int dvb_dmxdev_set_buffer_size(struct dmxdev_filter *dmxdevfilter,
300 struct dvb_ringbuffer *buf = &dmxdevfilter->buffer;
304 if (buf->size == size)
308 if (dmxdevfilter->state >= DMXDEV_STATE_GO)
311 newmem = vmalloc(size);
317 spin_lock_irq(&dmxdevfilter->dev->lock);
321 /* reset and not flush in case the buffer shrinks */
322 dvb_ringbuffer_reset(buf);
323 spin_unlock_irq(&dmxdevfilter->dev->lock);
330 static void dvb_dmxdev_filter_timeout(unsigned long data)
332 struct dmxdev_filter *dmxdevfilter = (struct dmxdev_filter *)data;
334 dmxdevfilter->buffer.error = -ETIMEDOUT;
335 spin_lock_irq(&dmxdevfilter->dev->lock);
336 dmxdevfilter->state = DMXDEV_STATE_TIMEDOUT;
337 spin_unlock_irq(&dmxdevfilter->dev->lock);
338 wake_up(&dmxdevfilter->buffer.queue);
341 static void dvb_dmxdev_filter_timer(struct dmxdev_filter *dmxdevfilter)
343 struct dmx_sct_filter_params *para = &dmxdevfilter->params.sec;
345 del_timer(&dmxdevfilter->timer);
347 dmxdevfilter->timer.function = dvb_dmxdev_filter_timeout;
348 dmxdevfilter->timer.data = (unsigned long)dmxdevfilter;
349 dmxdevfilter->timer.expires =
350 jiffies + 1 + (HZ / 2 + HZ * para->timeout) / 1000;
351 add_timer(&dmxdevfilter->timer);
355 static int dvb_dmxdev_section_callback(const u8 *buffer1, size_t buffer1_len,
356 const u8 *buffer2, size_t buffer2_len,
357 struct dmx_section_filter *filter,
358 enum dmx_success success)
360 struct dmxdev_filter *dmxdevfilter = filter->priv;
363 if (dmxdevfilter->buffer.error) {
364 wake_up(&dmxdevfilter->buffer.queue);
367 spin_lock(&dmxdevfilter->dev->lock);
368 if (dmxdevfilter->state != DMXDEV_STATE_GO) {
369 spin_unlock(&dmxdevfilter->dev->lock);
372 del_timer(&dmxdevfilter->timer);
373 dprintk("dmxdev: section callback %*ph\n", 6, buffer1);
374 ret = dvb_dmxdev_buffer_write(&dmxdevfilter->buffer, buffer1,
376 if (ret == buffer1_len) {
377 ret = dvb_dmxdev_buffer_write(&dmxdevfilter->buffer, buffer2,
381 dmxdevfilter->buffer.error = ret;
382 if (dmxdevfilter->params.sec.flags & DMX_ONESHOT)
383 dmxdevfilter->state = DMXDEV_STATE_DONE;
384 spin_unlock(&dmxdevfilter->dev->lock);
385 wake_up(&dmxdevfilter->buffer.queue);
389 static int dvb_dmxdev_ts_callback(const u8 *buffer1, size_t buffer1_len,
390 const u8 *buffer2, size_t buffer2_len,
391 struct dmx_ts_feed *feed,
392 enum dmx_success success)
394 struct dmxdev_filter *dmxdevfilter = feed->priv;
395 struct dvb_ringbuffer *buffer;
398 spin_lock(&dmxdevfilter->dev->lock);
399 if (dmxdevfilter->params.pes.output == DMX_OUT_DECODER) {
400 spin_unlock(&dmxdevfilter->dev->lock);
404 if (dmxdevfilter->params.pes.output == DMX_OUT_TAP
405 || dmxdevfilter->params.pes.output == DMX_OUT_TSDEMUX_TAP)
406 buffer = &dmxdevfilter->buffer;
408 buffer = &dmxdevfilter->dev->dvr_buffer;
410 spin_unlock(&dmxdevfilter->dev->lock);
411 wake_up(&buffer->queue);
414 ret = dvb_dmxdev_buffer_write(buffer, buffer1, buffer1_len);
415 if (ret == buffer1_len)
416 ret = dvb_dmxdev_buffer_write(buffer, buffer2, buffer2_len);
419 spin_unlock(&dmxdevfilter->dev->lock);
420 wake_up(&buffer->queue);
424 /* stop feed but only mark the specified filter as stopped (state set) */
425 static int dvb_dmxdev_feed_stop(struct dmxdev_filter *dmxdevfilter)
427 struct dmxdev_feed *feed;
429 dvb_dmxdev_filter_state_set(dmxdevfilter, DMXDEV_STATE_SET);
431 switch (dmxdevfilter->type) {
432 case DMXDEV_TYPE_SEC:
433 del_timer(&dmxdevfilter->timer);
434 dmxdevfilter->feed.sec->stop_filtering(dmxdevfilter->feed.sec);
436 case DMXDEV_TYPE_PES:
437 list_for_each_entry(feed, &dmxdevfilter->feed.ts, next)
438 feed->ts->stop_filtering(feed->ts);
446 /* start feed associated with the specified filter */
447 static int dvb_dmxdev_feed_start(struct dmxdev_filter *filter)
449 struct dmxdev_feed *feed;
452 dvb_dmxdev_filter_state_set(filter, DMXDEV_STATE_GO);
454 switch (filter->type) {
455 case DMXDEV_TYPE_SEC:
456 return filter->feed.sec->start_filtering(filter->feed.sec);
457 case DMXDEV_TYPE_PES:
458 list_for_each_entry(feed, &filter->feed.ts, next) {
459 ret = feed->ts->start_filtering(feed->ts);
461 dvb_dmxdev_feed_stop(filter);
473 /* restart section feed if it has filters left associated with it,
474 otherwise release the feed */
475 static int dvb_dmxdev_feed_restart(struct dmxdev_filter *filter)
478 struct dmxdev *dmxdev = filter->dev;
479 u16 pid = filter->params.sec.pid;
481 for (i = 0; i < dmxdev->filternum; i++)
482 if (dmxdev->filter[i].state >= DMXDEV_STATE_GO &&
483 dmxdev->filter[i].type == DMXDEV_TYPE_SEC &&
484 dmxdev->filter[i].params.sec.pid == pid) {
485 dvb_dmxdev_feed_start(&dmxdev->filter[i]);
489 filter->dev->demux->release_section_feed(dmxdev->demux,
495 static int dvb_dmxdev_filter_stop(struct dmxdev_filter *dmxdevfilter)
497 struct dmxdev_feed *feed;
498 struct dmx_demux *demux;
500 if (dmxdevfilter->state < DMXDEV_STATE_GO)
503 switch (dmxdevfilter->type) {
504 case DMXDEV_TYPE_SEC:
505 if (!dmxdevfilter->feed.sec)
507 dvb_dmxdev_feed_stop(dmxdevfilter);
508 if (dmxdevfilter->filter.sec)
509 dmxdevfilter->feed.sec->
510 release_filter(dmxdevfilter->feed.sec,
511 dmxdevfilter->filter.sec);
512 dvb_dmxdev_feed_restart(dmxdevfilter);
513 dmxdevfilter->feed.sec = NULL;
515 case DMXDEV_TYPE_PES:
516 dvb_dmxdev_feed_stop(dmxdevfilter);
517 demux = dmxdevfilter->dev->demux;
518 list_for_each_entry(feed, &dmxdevfilter->feed.ts, next) {
519 demux->release_ts_feed(demux, feed->ts);
524 if (dmxdevfilter->state == DMXDEV_STATE_ALLOCATED)
529 dvb_ringbuffer_flush(&dmxdevfilter->buffer);
533 static void dvb_dmxdev_delete_pids(struct dmxdev_filter *dmxdevfilter)
535 struct dmxdev_feed *feed, *tmp;
537 /* delete all PIDs */
538 list_for_each_entry_safe(feed, tmp, &dmxdevfilter->feed.ts, next) {
539 list_del(&feed->next);
543 BUG_ON(!list_empty(&dmxdevfilter->feed.ts));
546 static inline int dvb_dmxdev_filter_reset(struct dmxdev_filter *dmxdevfilter)
548 if (dmxdevfilter->state < DMXDEV_STATE_SET)
551 if (dmxdevfilter->type == DMXDEV_TYPE_PES)
552 dvb_dmxdev_delete_pids(dmxdevfilter);
554 dmxdevfilter->type = DMXDEV_TYPE_NONE;
555 dvb_dmxdev_filter_state_set(dmxdevfilter, DMXDEV_STATE_ALLOCATED);
559 static int dvb_dmxdev_start_feed(struct dmxdev *dmxdev,
560 struct dmxdev_filter *filter,
561 struct dmxdev_feed *feed)
563 struct timespec timeout = { 0 };
564 struct dmx_pes_filter_params *para = &filter->params.pes;
568 enum dmx_ts_pes ts_pes;
569 struct dmx_ts_feed *tsfeed;
572 otype = para->output;
574 ts_pes = para->pes_type;
576 if (ts_pes < DMX_PES_OTHER)
577 ts_type = TS_DECODER;
581 if (otype == DMX_OUT_TS_TAP)
582 ts_type |= TS_PACKET;
583 else if (otype == DMX_OUT_TSDEMUX_TAP)
584 ts_type |= TS_PACKET | TS_DEMUX;
585 else if (otype == DMX_OUT_TAP)
586 ts_type |= TS_PACKET | TS_DEMUX | TS_PAYLOAD_ONLY;
588 ret = dmxdev->demux->allocate_ts_feed(dmxdev->demux, &feed->ts,
589 dvb_dmxdev_ts_callback);
594 tsfeed->priv = filter;
596 ret = tsfeed->set(tsfeed, feed->pid, ts_type, ts_pes, 32768, timeout);
598 dmxdev->demux->release_ts_feed(dmxdev->demux, tsfeed);
602 ret = tsfeed->start_filtering(tsfeed);
604 dmxdev->demux->release_ts_feed(dmxdev->demux, tsfeed);
611 static int dvb_dmxdev_filter_start(struct dmxdev_filter *filter)
613 struct dmxdev *dmxdev = filter->dev;
614 struct dmxdev_feed *feed;
618 if (filter->state < DMXDEV_STATE_SET)
621 if (filter->state >= DMXDEV_STATE_GO)
622 dvb_dmxdev_filter_stop(filter);
624 if (!filter->buffer.data) {
625 mem = vmalloc(filter->buffer.size);
628 spin_lock_irq(&filter->dev->lock);
629 filter->buffer.data = mem;
630 spin_unlock_irq(&filter->dev->lock);
633 dvb_ringbuffer_flush(&filter->buffer);
635 switch (filter->type) {
636 case DMXDEV_TYPE_SEC:
638 struct dmx_sct_filter_params *para = &filter->params.sec;
639 struct dmx_section_filter **secfilter = &filter->filter.sec;
640 struct dmx_section_feed **secfeed = &filter->feed.sec;
646 /* find active filter/feed with same PID */
647 for (i = 0; i < dmxdev->filternum; i++) {
648 if (dmxdev->filter[i].state >= DMXDEV_STATE_GO &&
649 dmxdev->filter[i].type == DMXDEV_TYPE_SEC &&
650 dmxdev->filter[i].params.sec.pid == para->pid) {
651 *secfeed = dmxdev->filter[i].feed.sec;
656 /* if no feed found, try to allocate new one */
658 ret = dmxdev->demux->allocate_section_feed(dmxdev->demux,
660 dvb_dmxdev_section_callback);
662 printk("DVB (%s): could not alloc feed\n",
667 ret = (*secfeed)->set(*secfeed, para->pid, 32768,
668 (para->flags & DMX_CHECK_CRC) ? 1 : 0);
670 printk("DVB (%s): could not set feed\n",
672 dvb_dmxdev_feed_restart(filter);
676 dvb_dmxdev_feed_stop(filter);
679 ret = (*secfeed)->allocate_filter(*secfeed, secfilter);
681 dvb_dmxdev_feed_restart(filter);
682 filter->feed.sec->start_filtering(*secfeed);
683 dprintk("could not get filter\n");
687 (*secfilter)->priv = filter;
689 memcpy(&((*secfilter)->filter_value[3]),
690 &(para->filter.filter[1]), DMX_FILTER_SIZE - 1);
691 memcpy(&(*secfilter)->filter_mask[3],
692 ¶->filter.mask[1], DMX_FILTER_SIZE - 1);
693 memcpy(&(*secfilter)->filter_mode[3],
694 ¶->filter.mode[1], DMX_FILTER_SIZE - 1);
696 (*secfilter)->filter_value[0] = para->filter.filter[0];
697 (*secfilter)->filter_mask[0] = para->filter.mask[0];
698 (*secfilter)->filter_mode[0] = para->filter.mode[0];
699 (*secfilter)->filter_mask[1] = 0;
700 (*secfilter)->filter_mask[2] = 0;
704 ret = filter->feed.sec->start_filtering(filter->feed.sec);
708 dvb_dmxdev_filter_timer(filter);
711 case DMXDEV_TYPE_PES:
712 list_for_each_entry(feed, &filter->feed.ts, next) {
713 ret = dvb_dmxdev_start_feed(dmxdev, filter, feed);
715 dvb_dmxdev_filter_stop(filter);
724 dvb_dmxdev_filter_state_set(filter, DMXDEV_STATE_GO);
728 static int dvb_demux_open(struct inode *inode, struct file *file)
730 struct dvb_device *dvbdev = file->private_data;
731 struct dmxdev *dmxdev = dvbdev->priv;
733 struct dmxdev_filter *dmxdevfilter;
738 if (mutex_lock_interruptible(&dmxdev->mutex))
741 for (i = 0; i < dmxdev->filternum; i++)
742 if (dmxdev->filter[i].state == DMXDEV_STATE_FREE)
745 if (i == dmxdev->filternum) {
746 mutex_unlock(&dmxdev->mutex);
750 dmxdevfilter = &dmxdev->filter[i];
751 mutex_init(&dmxdevfilter->mutex);
752 file->private_data = dmxdevfilter;
754 dvb_ringbuffer_init(&dmxdevfilter->buffer, NULL, 8192);
755 dmxdevfilter->type = DMXDEV_TYPE_NONE;
756 dvb_dmxdev_filter_state_set(dmxdevfilter, DMXDEV_STATE_ALLOCATED);
757 init_timer(&dmxdevfilter->timer);
761 mutex_unlock(&dmxdev->mutex);
765 static int dvb_dmxdev_filter_free(struct dmxdev *dmxdev,
766 struct dmxdev_filter *dmxdevfilter)
768 mutex_lock(&dmxdev->mutex);
769 mutex_lock(&dmxdevfilter->mutex);
771 dvb_dmxdev_filter_stop(dmxdevfilter);
772 dvb_dmxdev_filter_reset(dmxdevfilter);
774 if (dmxdevfilter->buffer.data) {
775 void *mem = dmxdevfilter->buffer.data;
777 spin_lock_irq(&dmxdev->lock);
778 dmxdevfilter->buffer.data = NULL;
779 spin_unlock_irq(&dmxdev->lock);
783 dvb_dmxdev_filter_state_set(dmxdevfilter, DMXDEV_STATE_FREE);
784 wake_up(&dmxdevfilter->buffer.queue);
785 mutex_unlock(&dmxdevfilter->mutex);
786 mutex_unlock(&dmxdev->mutex);
790 static inline void invert_mode(dmx_filter_t *filter)
794 for (i = 0; i < DMX_FILTER_SIZE; i++)
795 filter->mode[i] ^= 0xff;
798 static int dvb_dmxdev_add_pid(struct dmxdev *dmxdev,
799 struct dmxdev_filter *filter, u16 pid)
801 struct dmxdev_feed *feed;
803 if ((filter->type != DMXDEV_TYPE_PES) ||
804 (filter->state < DMXDEV_STATE_SET))
807 /* only TS packet filters may have multiple PIDs */
808 if ((filter->params.pes.output != DMX_OUT_TSDEMUX_TAP) &&
809 (!list_empty(&filter->feed.ts)))
812 feed = kzalloc(sizeof(struct dmxdev_feed), GFP_KERNEL);
817 list_add(&feed->next, &filter->feed.ts);
819 if (filter->state >= DMXDEV_STATE_GO)
820 return dvb_dmxdev_start_feed(dmxdev, filter, feed);
825 static int dvb_dmxdev_remove_pid(struct dmxdev *dmxdev,
826 struct dmxdev_filter *filter, u16 pid)
828 struct dmxdev_feed *feed, *tmp;
830 if ((filter->type != DMXDEV_TYPE_PES) ||
831 (filter->state < DMXDEV_STATE_SET))
834 list_for_each_entry_safe(feed, tmp, &filter->feed.ts, next) {
835 if ((feed->pid == pid) && (feed->ts != NULL)) {
836 feed->ts->stop_filtering(feed->ts);
837 filter->dev->demux->release_ts_feed(filter->dev->demux,
839 list_del(&feed->next);
847 static int dvb_dmxdev_filter_set(struct dmxdev *dmxdev,
848 struct dmxdev_filter *dmxdevfilter,
849 struct dmx_sct_filter_params *params)
851 dprintk("function : %s, PID=0x%04x, flags=%02x, timeout=%d\n",
852 __func__, params->pid, params->flags, params->timeout);
854 dvb_dmxdev_filter_stop(dmxdevfilter);
856 dmxdevfilter->type = DMXDEV_TYPE_SEC;
857 memcpy(&dmxdevfilter->params.sec,
858 params, sizeof(struct dmx_sct_filter_params));
859 invert_mode(&dmxdevfilter->params.sec.filter);
860 dvb_dmxdev_filter_state_set(dmxdevfilter, DMXDEV_STATE_SET);
862 if (params->flags & DMX_IMMEDIATE_START)
863 return dvb_dmxdev_filter_start(dmxdevfilter);
868 static int dvb_dmxdev_pes_filter_set(struct dmxdev *dmxdev,
869 struct dmxdev_filter *dmxdevfilter,
870 struct dmx_pes_filter_params *params)
874 dvb_dmxdev_filter_stop(dmxdevfilter);
875 dvb_dmxdev_filter_reset(dmxdevfilter);
877 if ((unsigned)params->pes_type > DMX_PES_OTHER)
880 dmxdevfilter->type = DMXDEV_TYPE_PES;
881 memcpy(&dmxdevfilter->params, params,
882 sizeof(struct dmx_pes_filter_params));
883 INIT_LIST_HEAD(&dmxdevfilter->feed.ts);
885 dvb_dmxdev_filter_state_set(dmxdevfilter, DMXDEV_STATE_SET);
887 ret = dvb_dmxdev_add_pid(dmxdev, dmxdevfilter,
888 dmxdevfilter->params.pes.pid);
892 if (params->flags & DMX_IMMEDIATE_START)
893 return dvb_dmxdev_filter_start(dmxdevfilter);
898 static ssize_t dvb_dmxdev_read_sec(struct dmxdev_filter *dfil,
899 struct file *file, char __user *buf,
900 size_t count, loff_t *ppos)
905 if (dfil->todo <= 0) {
906 hcount = 3 + dfil->todo;
909 result = dvb_dmxdev_buffer_read(&dfil->buffer,
910 file->f_flags & O_NONBLOCK,
916 if (copy_from_user(dfil->secheader - dfil->todo, buf, result))
921 dfil->todo -= result;
924 dfil->todo = ((dfil->secheader[1] << 8) | dfil->secheader[2]) & 0xfff;
928 if (count > dfil->todo)
930 result = dvb_dmxdev_buffer_read(&dfil->buffer,
931 file->f_flags & O_NONBLOCK,
935 dfil->todo -= result;
936 return (result + done);
940 dvb_demux_read(struct file *file, char __user *buf, size_t count,
943 struct dmxdev_filter *dmxdevfilter = file->private_data;
946 if (mutex_lock_interruptible(&dmxdevfilter->mutex))
949 if (dmxdevfilter->type == DMXDEV_TYPE_SEC)
950 ret = dvb_dmxdev_read_sec(dmxdevfilter, file, buf, count, ppos);
952 ret = dvb_dmxdev_buffer_read(&dmxdevfilter->buffer,
953 file->f_flags & O_NONBLOCK,
956 mutex_unlock(&dmxdevfilter->mutex);
960 static int dvb_demux_do_ioctl(struct file *file,
961 unsigned int cmd, void *parg)
963 struct dmxdev_filter *dmxdevfilter = file->private_data;
964 struct dmxdev *dmxdev = dmxdevfilter->dev;
965 unsigned long arg = (unsigned long)parg;
968 if (mutex_lock_interruptible(&dmxdev->mutex))
973 if (mutex_lock_interruptible(&dmxdevfilter->mutex)) {
974 mutex_unlock(&dmxdev->mutex);
977 if (dmxdevfilter->state < DMXDEV_STATE_SET)
980 ret = dvb_dmxdev_filter_start(dmxdevfilter);
981 mutex_unlock(&dmxdevfilter->mutex);
985 if (mutex_lock_interruptible(&dmxdevfilter->mutex)) {
986 mutex_unlock(&dmxdev->mutex);
989 ret = dvb_dmxdev_filter_stop(dmxdevfilter);
990 mutex_unlock(&dmxdevfilter->mutex);
994 if (mutex_lock_interruptible(&dmxdevfilter->mutex)) {
995 mutex_unlock(&dmxdev->mutex);
998 ret = dvb_dmxdev_filter_set(dmxdev, dmxdevfilter, parg);
999 mutex_unlock(&dmxdevfilter->mutex);
1002 case DMX_SET_PES_FILTER:
1003 if (mutex_lock_interruptible(&dmxdevfilter->mutex)) {
1004 mutex_unlock(&dmxdev->mutex);
1005 return -ERESTARTSYS;
1007 ret = dvb_dmxdev_pes_filter_set(dmxdev, dmxdevfilter, parg);
1008 mutex_unlock(&dmxdevfilter->mutex);
1011 case DMX_SET_BUFFER_SIZE:
1012 if (mutex_lock_interruptible(&dmxdevfilter->mutex)) {
1013 mutex_unlock(&dmxdev->mutex);
1014 return -ERESTARTSYS;
1016 ret = dvb_dmxdev_set_buffer_size(dmxdevfilter, arg);
1017 mutex_unlock(&dmxdevfilter->mutex);
1020 case DMX_GET_PES_PIDS:
1021 if (!dmxdev->demux->get_pes_pids) {
1025 dmxdev->demux->get_pes_pids(dmxdev->demux, parg);
1029 if (!dmxdev->demux->get_caps) {
1033 ret = dmxdev->demux->get_caps(dmxdev->demux, parg);
1036 case DMX_SET_SOURCE:
1037 if (!dmxdev->demux->set_source) {
1041 ret = dmxdev->demux->set_source(dmxdev->demux, parg);
1045 if (!dmxdev->demux->get_stc) {
1049 ret = dmxdev->demux->get_stc(dmxdev->demux,
1050 ((struct dmx_stc *)parg)->num,
1051 &((struct dmx_stc *)parg)->stc,
1052 &((struct dmx_stc *)parg)->base);
1056 if (mutex_lock_interruptible(&dmxdevfilter->mutex)) {
1060 ret = dvb_dmxdev_add_pid(dmxdev, dmxdevfilter, *(u16 *)parg);
1061 mutex_unlock(&dmxdevfilter->mutex);
1064 case DMX_REMOVE_PID:
1065 if (mutex_lock_interruptible(&dmxdevfilter->mutex)) {
1069 ret = dvb_dmxdev_remove_pid(dmxdev, dmxdevfilter, *(u16 *)parg);
1070 mutex_unlock(&dmxdevfilter->mutex);
1077 mutex_unlock(&dmxdev->mutex);
1081 static long dvb_demux_ioctl(struct file *file, unsigned int cmd,
1084 return dvb_usercopy(file, cmd, arg, dvb_demux_do_ioctl);
1087 static unsigned int dvb_demux_poll(struct file *file, poll_table *wait)
1089 struct dmxdev_filter *dmxdevfilter = file->private_data;
1090 unsigned int mask = 0;
1095 poll_wait(file, &dmxdevfilter->buffer.queue, wait);
1097 if (dmxdevfilter->state != DMXDEV_STATE_GO &&
1098 dmxdevfilter->state != DMXDEV_STATE_DONE &&
1099 dmxdevfilter->state != DMXDEV_STATE_TIMEDOUT)
1102 if (dmxdevfilter->buffer.error)
1103 mask |= (POLLIN | POLLRDNORM | POLLPRI | POLLERR);
1105 if (!dvb_ringbuffer_empty(&dmxdevfilter->buffer))
1106 mask |= (POLLIN | POLLRDNORM | POLLPRI);
1111 static int dvb_demux_release(struct inode *inode, struct file *file)
1113 struct dmxdev_filter *dmxdevfilter = file->private_data;
1114 struct dmxdev *dmxdev = dmxdevfilter->dev;
1118 ret = dvb_dmxdev_filter_free(dmxdev, dmxdevfilter);
1120 mutex_lock(&dmxdev->mutex);
1121 dmxdev->dvbdev->users--;
1122 if(dmxdev->dvbdev->users==1 && dmxdev->exit==1) {
1123 fops_put(file->f_op);
1125 mutex_unlock(&dmxdev->mutex);
1126 wake_up(&dmxdev->dvbdev->wait_queue);
1128 mutex_unlock(&dmxdev->mutex);
1133 static const struct file_operations dvb_demux_fops = {
1134 .owner = THIS_MODULE,
1135 .read = dvb_demux_read,
1136 .unlocked_ioctl = dvb_demux_ioctl,
1137 .open = dvb_demux_open,
1138 .release = dvb_demux_release,
1139 .poll = dvb_demux_poll,
1140 .llseek = default_llseek,
1143 static struct dvb_device dvbdev_demux = {
1147 .fops = &dvb_demux_fops
1150 static int dvb_dvr_do_ioctl(struct file *file,
1151 unsigned int cmd, void *parg)
1153 struct dvb_device *dvbdev = file->private_data;
1154 struct dmxdev *dmxdev = dvbdev->priv;
1155 unsigned long arg = (unsigned long)parg;
1158 if (mutex_lock_interruptible(&dmxdev->mutex))
1159 return -ERESTARTSYS;
1162 case DMX_SET_BUFFER_SIZE:
1163 ret = dvb_dvr_set_buffer_size(dmxdev, arg);
1170 mutex_unlock(&dmxdev->mutex);
1174 static long dvb_dvr_ioctl(struct file *file,
1175 unsigned int cmd, unsigned long arg)
1177 return dvb_usercopy(file, cmd, arg, dvb_dvr_do_ioctl);
1180 static unsigned int dvb_dvr_poll(struct file *file, poll_table *wait)
1182 struct dvb_device *dvbdev = file->private_data;
1183 struct dmxdev *dmxdev = dvbdev->priv;
1184 unsigned int mask = 0;
1186 dprintk("function : %s\n", __func__);
1188 poll_wait(file, &dmxdev->dvr_buffer.queue, wait);
1190 if ((file->f_flags & O_ACCMODE) == O_RDONLY) {
1191 if (dmxdev->dvr_buffer.error)
1192 mask |= (POLLIN | POLLRDNORM | POLLPRI | POLLERR);
1194 if (!dvb_ringbuffer_empty(&dmxdev->dvr_buffer))
1195 mask |= (POLLIN | POLLRDNORM | POLLPRI);
1197 mask |= (POLLOUT | POLLWRNORM | POLLPRI);
1202 static const struct file_operations dvb_dvr_fops = {
1203 .owner = THIS_MODULE,
1204 .read = dvb_dvr_read,
1205 .write = dvb_dvr_write,
1206 .unlocked_ioctl = dvb_dvr_ioctl,
1207 .open = dvb_dvr_open,
1208 .release = dvb_dvr_release,
1209 .poll = dvb_dvr_poll,
1210 .llseek = default_llseek,
1213 static struct dvb_device dvbdev_dvr = {
1217 .fops = &dvb_dvr_fops
1220 int dvb_dmxdev_init(struct dmxdev *dmxdev, struct dvb_adapter *dvb_adapter)
1224 if (dmxdev->demux->open(dmxdev->demux) < 0)
1227 dmxdev->filter = vmalloc(dmxdev->filternum * sizeof(struct dmxdev_filter));
1228 if (!dmxdev->filter)
1231 mutex_init(&dmxdev->mutex);
1232 spin_lock_init(&dmxdev->lock);
1233 for (i = 0; i < dmxdev->filternum; i++) {
1234 dmxdev->filter[i].dev = dmxdev;
1235 dmxdev->filter[i].buffer.data = NULL;
1236 dvb_dmxdev_filter_state_set(&dmxdev->filter[i],
1240 dvb_register_device(dvb_adapter, &dmxdev->dvbdev, &dvbdev_demux, dmxdev,
1242 dvb_register_device(dvb_adapter, &dmxdev->dvr_dvbdev, &dvbdev_dvr,
1243 dmxdev, DVB_DEVICE_DVR);
1245 dvb_ringbuffer_init(&dmxdev->dvr_buffer, NULL, 8192);
1250 EXPORT_SYMBOL(dvb_dmxdev_init);
1252 void dvb_dmxdev_release(struct dmxdev *dmxdev)
1255 if (dmxdev->dvbdev->users > 1) {
1256 wait_event(dmxdev->dvbdev->wait_queue,
1257 dmxdev->dvbdev->users==1);
1259 if (dmxdev->dvr_dvbdev->users > 1) {
1260 wait_event(dmxdev->dvr_dvbdev->wait_queue,
1261 dmxdev->dvr_dvbdev->users==1);
1264 dvb_unregister_device(dmxdev->dvbdev);
1265 dvb_unregister_device(dmxdev->dvr_dvbdev);
1267 vfree(dmxdev->filter);
1268 dmxdev->filter = NULL;
1269 dmxdev->demux->close(dmxdev->demux);
1272 EXPORT_SYMBOL(dvb_dmxdev_release);