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 #define pr_fmt(fmt) "dmxdev: " fmt
25 #include <linux/sched.h>
26 #include <linux/spinlock.h>
27 #include <linux/slab.h>
28 #include <linux/vmalloc.h>
29 #include <linux/module.h>
30 #include <linux/poll.h>
31 #include <linux/ioctl.h>
32 #include <linux/wait.h>
33 #include <linux/uaccess.h>
38 module_param(debug, int, 0644);
39 MODULE_PARM_DESC(debug, "Turn on/off debugging (default:off).");
41 #define dprintk(fmt, arg...) do { \
43 printk(KERN_DEBUG pr_fmt("%s: " fmt), \
47 static int dvb_dmxdev_buffer_write(struct dvb_ringbuffer *buf,
48 const u8 *src, size_t len)
57 free = dvb_ringbuffer_free(buf);
59 dprintk("buffer overflow\n");
63 return dvb_ringbuffer_write(buf, src, len);
66 static ssize_t dvb_dmxdev_buffer_read(struct dvb_ringbuffer *src,
67 int non_blocking, char __user *buf,
68 size_t count, loff_t *ppos)
79 dvb_ringbuffer_flush(src);
83 for (todo = count; todo > 0; todo -= ret) {
84 if (non_blocking && dvb_ringbuffer_empty(src)) {
89 ret = wait_event_interruptible(src->queue,
90 !dvb_ringbuffer_empty(src) ||
97 dvb_ringbuffer_flush(src);
101 avail = dvb_ringbuffer_avail(src);
105 ret = dvb_ringbuffer_read_user(src, buf, avail);
112 return (count - todo) ? (count - todo) : ret;
115 static struct dmx_frontend *get_fe(struct dmx_demux *demux, int type)
117 struct list_head *head, *pos;
119 head = demux->get_frontends(demux);
122 list_for_each(pos, head)
123 if (DMX_FE_ENTRY(pos)->source == type)
124 return DMX_FE_ENTRY(pos);
129 static int dvb_dvr_open(struct inode *inode, struct file *file)
131 struct dvb_device *dvbdev = file->private_data;
132 struct dmxdev *dmxdev = dvbdev->priv;
133 struct dmx_frontend *front;
135 dprintk("%s\n", __func__);
137 if (mutex_lock_interruptible(&dmxdev->mutex))
141 mutex_unlock(&dmxdev->mutex);
145 if ((file->f_flags & O_ACCMODE) == O_RDWR) {
146 if (!(dmxdev->capabilities & DMXDEV_CAP_DUPLEX)) {
147 mutex_unlock(&dmxdev->mutex);
152 if ((file->f_flags & O_ACCMODE) == O_RDONLY) {
154 if (!dvbdev->readers) {
155 mutex_unlock(&dmxdev->mutex);
158 mem = vmalloc(DVR_BUFFER_SIZE);
160 mutex_unlock(&dmxdev->mutex);
163 dvb_ringbuffer_init(&dmxdev->dvr_buffer, mem, DVR_BUFFER_SIZE);
167 if ((file->f_flags & O_ACCMODE) == O_WRONLY) {
168 dmxdev->dvr_orig_fe = dmxdev->demux->frontend;
170 if (!dmxdev->demux->write) {
171 mutex_unlock(&dmxdev->mutex);
175 front = get_fe(dmxdev->demux, DMX_MEMORY_FE);
178 mutex_unlock(&dmxdev->mutex);
181 dmxdev->demux->disconnect_frontend(dmxdev->demux);
182 dmxdev->demux->connect_frontend(dmxdev->demux, front);
185 mutex_unlock(&dmxdev->mutex);
189 static int dvb_dvr_release(struct inode *inode, struct file *file)
191 struct dvb_device *dvbdev = file->private_data;
192 struct dmxdev *dmxdev = dvbdev->priv;
194 mutex_lock(&dmxdev->mutex);
196 if ((file->f_flags & O_ACCMODE) == O_WRONLY) {
197 dmxdev->demux->disconnect_frontend(dmxdev->demux);
198 dmxdev->demux->connect_frontend(dmxdev->demux,
199 dmxdev->dvr_orig_fe);
201 if ((file->f_flags & O_ACCMODE) == O_RDONLY) {
203 if (dmxdev->dvr_buffer.data) {
204 void *mem = dmxdev->dvr_buffer.data;
206 spin_lock_irq(&dmxdev->lock);
207 dmxdev->dvr_buffer.data = NULL;
208 spin_unlock_irq(&dmxdev->lock);
214 if (dvbdev->users == 1 && dmxdev->exit == 1) {
215 mutex_unlock(&dmxdev->mutex);
216 wake_up(&dvbdev->wait_queue);
218 mutex_unlock(&dmxdev->mutex);
223 static ssize_t dvb_dvr_write(struct file *file, const char __user *buf,
224 size_t count, loff_t *ppos)
226 struct dvb_device *dvbdev = file->private_data;
227 struct dmxdev *dmxdev = dvbdev->priv;
230 if (!dmxdev->demux->write)
232 if ((file->f_flags & O_ACCMODE) != O_WRONLY)
234 if (mutex_lock_interruptible(&dmxdev->mutex))
238 mutex_unlock(&dmxdev->mutex);
241 ret = dmxdev->demux->write(dmxdev->demux, buf, count);
242 mutex_unlock(&dmxdev->mutex);
246 static ssize_t dvb_dvr_read(struct file *file, char __user *buf, size_t count,
249 struct dvb_device *dvbdev = file->private_data;
250 struct dmxdev *dmxdev = dvbdev->priv;
255 return dvb_dmxdev_buffer_read(&dmxdev->dvr_buffer,
256 file->f_flags & O_NONBLOCK,
260 static int dvb_dvr_set_buffer_size(struct dmxdev *dmxdev,
263 struct dvb_ringbuffer *buf = &dmxdev->dvr_buffer;
267 dprintk("%s\n", __func__);
269 if (buf->size == size)
274 newmem = vmalloc(size);
280 spin_lock_irq(&dmxdev->lock);
284 /* reset and not flush in case the buffer shrinks */
285 dvb_ringbuffer_reset(buf);
286 spin_unlock_irq(&dmxdev->lock);
293 static inline void dvb_dmxdev_filter_state_set(struct dmxdev_filter
294 *dmxdevfilter, int state)
296 spin_lock_irq(&dmxdevfilter->dev->lock);
297 dmxdevfilter->state = state;
298 spin_unlock_irq(&dmxdevfilter->dev->lock);
301 static int dvb_dmxdev_set_buffer_size(struct dmxdev_filter *dmxdevfilter,
304 struct dvb_ringbuffer *buf = &dmxdevfilter->buffer;
308 if (buf->size == size)
312 if (dmxdevfilter->state >= DMXDEV_STATE_GO)
315 newmem = vmalloc(size);
321 spin_lock_irq(&dmxdevfilter->dev->lock);
325 /* reset and not flush in case the buffer shrinks */
326 dvb_ringbuffer_reset(buf);
327 spin_unlock_irq(&dmxdevfilter->dev->lock);
334 static void dvb_dmxdev_filter_timeout(unsigned long data)
336 struct dmxdev_filter *dmxdevfilter = (struct dmxdev_filter *)data;
338 dmxdevfilter->buffer.error = -ETIMEDOUT;
339 spin_lock_irq(&dmxdevfilter->dev->lock);
340 dmxdevfilter->state = DMXDEV_STATE_TIMEDOUT;
341 spin_unlock_irq(&dmxdevfilter->dev->lock);
342 wake_up(&dmxdevfilter->buffer.queue);
345 static void dvb_dmxdev_filter_timer(struct dmxdev_filter *dmxdevfilter)
347 struct dmx_sct_filter_params *para = &dmxdevfilter->params.sec;
349 del_timer(&dmxdevfilter->timer);
351 dmxdevfilter->timer.function = dvb_dmxdev_filter_timeout;
352 dmxdevfilter->timer.data = (unsigned long)dmxdevfilter;
353 dmxdevfilter->timer.expires =
354 jiffies + 1 + (HZ / 2 + HZ * para->timeout) / 1000;
355 add_timer(&dmxdevfilter->timer);
359 static int dvb_dmxdev_section_callback(const u8 *buffer1, size_t buffer1_len,
360 const u8 *buffer2, size_t buffer2_len,
361 struct dmx_section_filter *filter)
363 struct dmxdev_filter *dmxdevfilter = filter->priv;
366 if (dmxdevfilter->buffer.error) {
367 wake_up(&dmxdevfilter->buffer.queue);
370 spin_lock(&dmxdevfilter->dev->lock);
371 if (dmxdevfilter->state != DMXDEV_STATE_GO) {
372 spin_unlock(&dmxdevfilter->dev->lock);
375 del_timer(&dmxdevfilter->timer);
376 dprintk("section callback %*ph\n", 6, buffer1);
377 ret = dvb_dmxdev_buffer_write(&dmxdevfilter->buffer, buffer1,
379 if (ret == buffer1_len) {
380 ret = dvb_dmxdev_buffer_write(&dmxdevfilter->buffer, buffer2,
384 dmxdevfilter->buffer.error = ret;
385 if (dmxdevfilter->params.sec.flags & DMX_ONESHOT)
386 dmxdevfilter->state = DMXDEV_STATE_DONE;
387 spin_unlock(&dmxdevfilter->dev->lock);
388 wake_up(&dmxdevfilter->buffer.queue);
392 static int dvb_dmxdev_ts_callback(const u8 *buffer1, size_t buffer1_len,
393 const u8 *buffer2, size_t buffer2_len,
394 struct dmx_ts_feed *feed)
396 struct dmxdev_filter *dmxdevfilter = feed->priv;
397 struct dvb_ringbuffer *buffer;
400 spin_lock(&dmxdevfilter->dev->lock);
401 if (dmxdevfilter->params.pes.output == DMX_OUT_DECODER) {
402 spin_unlock(&dmxdevfilter->dev->lock);
406 if (dmxdevfilter->params.pes.output == DMX_OUT_TAP
407 || dmxdevfilter->params.pes.output == DMX_OUT_TSDEMUX_TAP)
408 buffer = &dmxdevfilter->buffer;
410 buffer = &dmxdevfilter->dev->dvr_buffer;
412 spin_unlock(&dmxdevfilter->dev->lock);
413 wake_up(&buffer->queue);
416 ret = dvb_dmxdev_buffer_write(buffer, buffer1, buffer1_len);
417 if (ret == buffer1_len)
418 ret = dvb_dmxdev_buffer_write(buffer, buffer2, buffer2_len);
421 spin_unlock(&dmxdevfilter->dev->lock);
422 wake_up(&buffer->queue);
426 /* stop feed but only mark the specified filter as stopped (state set) */
427 static int dvb_dmxdev_feed_stop(struct dmxdev_filter *dmxdevfilter)
429 struct dmxdev_feed *feed;
431 dvb_dmxdev_filter_state_set(dmxdevfilter, DMXDEV_STATE_SET);
433 switch (dmxdevfilter->type) {
434 case DMXDEV_TYPE_SEC:
435 del_timer(&dmxdevfilter->timer);
436 dmxdevfilter->feed.sec->stop_filtering(dmxdevfilter->feed.sec);
438 case DMXDEV_TYPE_PES:
439 list_for_each_entry(feed, &dmxdevfilter->feed.ts, next)
440 feed->ts->stop_filtering(feed->ts);
448 /* start feed associated with the specified filter */
449 static int dvb_dmxdev_feed_start(struct dmxdev_filter *filter)
451 struct dmxdev_feed *feed;
454 dvb_dmxdev_filter_state_set(filter, DMXDEV_STATE_GO);
456 switch (filter->type) {
457 case DMXDEV_TYPE_SEC:
458 return filter->feed.sec->start_filtering(filter->feed.sec);
459 case DMXDEV_TYPE_PES:
460 list_for_each_entry(feed, &filter->feed.ts, next) {
461 ret = feed->ts->start_filtering(feed->ts);
463 dvb_dmxdev_feed_stop(filter);
475 /* restart section feed if it has filters left associated with it,
476 otherwise release the feed */
477 static int dvb_dmxdev_feed_restart(struct dmxdev_filter *filter)
480 struct dmxdev *dmxdev = filter->dev;
481 u16 pid = filter->params.sec.pid;
483 for (i = 0; i < dmxdev->filternum; i++)
484 if (dmxdev->filter[i].state >= DMXDEV_STATE_GO &&
485 dmxdev->filter[i].type == DMXDEV_TYPE_SEC &&
486 dmxdev->filter[i].params.sec.pid == pid) {
487 dvb_dmxdev_feed_start(&dmxdev->filter[i]);
491 filter->dev->demux->release_section_feed(dmxdev->demux,
497 static int dvb_dmxdev_filter_stop(struct dmxdev_filter *dmxdevfilter)
499 struct dmxdev_feed *feed;
500 struct dmx_demux *demux;
502 if (dmxdevfilter->state < DMXDEV_STATE_GO)
505 switch (dmxdevfilter->type) {
506 case DMXDEV_TYPE_SEC:
507 if (!dmxdevfilter->feed.sec)
509 dvb_dmxdev_feed_stop(dmxdevfilter);
510 if (dmxdevfilter->filter.sec)
511 dmxdevfilter->feed.sec->
512 release_filter(dmxdevfilter->feed.sec,
513 dmxdevfilter->filter.sec);
514 dvb_dmxdev_feed_restart(dmxdevfilter);
515 dmxdevfilter->feed.sec = NULL;
517 case DMXDEV_TYPE_PES:
518 dvb_dmxdev_feed_stop(dmxdevfilter);
519 demux = dmxdevfilter->dev->demux;
520 list_for_each_entry(feed, &dmxdevfilter->feed.ts, next) {
521 demux->release_ts_feed(demux, feed->ts);
526 if (dmxdevfilter->state == DMXDEV_STATE_ALLOCATED)
531 dvb_ringbuffer_flush(&dmxdevfilter->buffer);
535 static void dvb_dmxdev_delete_pids(struct dmxdev_filter *dmxdevfilter)
537 struct dmxdev_feed *feed, *tmp;
539 /* delete all PIDs */
540 list_for_each_entry_safe(feed, tmp, &dmxdevfilter->feed.ts, next) {
541 list_del(&feed->next);
545 BUG_ON(!list_empty(&dmxdevfilter->feed.ts));
548 static inline int dvb_dmxdev_filter_reset(struct dmxdev_filter *dmxdevfilter)
550 if (dmxdevfilter->state < DMXDEV_STATE_SET)
553 if (dmxdevfilter->type == DMXDEV_TYPE_PES)
554 dvb_dmxdev_delete_pids(dmxdevfilter);
556 dmxdevfilter->type = DMXDEV_TYPE_NONE;
557 dvb_dmxdev_filter_state_set(dmxdevfilter, DMXDEV_STATE_ALLOCATED);
561 static int dvb_dmxdev_start_feed(struct dmxdev *dmxdev,
562 struct dmxdev_filter *filter,
563 struct dmxdev_feed *feed)
566 struct dmx_pes_filter_params *para = &filter->params.pes;
570 enum dmx_ts_pes ts_pes;
571 struct dmx_ts_feed *tsfeed;
574 otype = para->output;
576 ts_pes = para->pes_type;
578 if (ts_pes < DMX_PES_OTHER)
579 ts_type = TS_DECODER;
583 if (otype == DMX_OUT_TS_TAP)
584 ts_type |= TS_PACKET;
585 else if (otype == DMX_OUT_TSDEMUX_TAP)
586 ts_type |= TS_PACKET | TS_DEMUX;
587 else if (otype == DMX_OUT_TAP)
588 ts_type |= TS_PACKET | TS_DEMUX | TS_PAYLOAD_ONLY;
590 ret = dmxdev->demux->allocate_ts_feed(dmxdev->demux, &feed->ts,
591 dvb_dmxdev_ts_callback);
596 tsfeed->priv = filter;
598 ret = tsfeed->set(tsfeed, feed->pid, ts_type, ts_pes, timeout);
600 dmxdev->demux->release_ts_feed(dmxdev->demux, tsfeed);
604 ret = tsfeed->start_filtering(tsfeed);
606 dmxdev->demux->release_ts_feed(dmxdev->demux, tsfeed);
613 static int dvb_dmxdev_filter_start(struct dmxdev_filter *filter)
615 struct dmxdev *dmxdev = filter->dev;
616 struct dmxdev_feed *feed;
620 if (filter->state < DMXDEV_STATE_SET)
623 if (filter->state >= DMXDEV_STATE_GO)
624 dvb_dmxdev_filter_stop(filter);
626 if (!filter->buffer.data) {
627 mem = vmalloc(filter->buffer.size);
630 spin_lock_irq(&filter->dev->lock);
631 filter->buffer.data = mem;
632 spin_unlock_irq(&filter->dev->lock);
635 dvb_ringbuffer_flush(&filter->buffer);
637 switch (filter->type) {
638 case DMXDEV_TYPE_SEC:
640 struct dmx_sct_filter_params *para = &filter->params.sec;
641 struct dmx_section_filter **secfilter = &filter->filter.sec;
642 struct dmx_section_feed **secfeed = &filter->feed.sec;
648 /* find active filter/feed with same PID */
649 for (i = 0; i < dmxdev->filternum; i++) {
650 if (dmxdev->filter[i].state >= DMXDEV_STATE_GO &&
651 dmxdev->filter[i].type == DMXDEV_TYPE_SEC &&
652 dmxdev->filter[i].params.sec.pid == para->pid) {
653 *secfeed = dmxdev->filter[i].feed.sec;
658 /* if no feed found, try to allocate new one */
660 ret = dmxdev->demux->allocate_section_feed(dmxdev->demux,
662 dvb_dmxdev_section_callback);
664 pr_err("DVB (%s): could not alloc feed\n",
669 ret = (*secfeed)->set(*secfeed, para->pid,
670 (para->flags & DMX_CHECK_CRC) ? 1 : 0);
672 pr_err("DVB (%s): could not set feed\n",
674 dvb_dmxdev_feed_restart(filter);
678 dvb_dmxdev_feed_stop(filter);
681 ret = (*secfeed)->allocate_filter(*secfeed, secfilter);
683 dvb_dmxdev_feed_restart(filter);
684 filter->feed.sec->start_filtering(*secfeed);
685 dprintk("could not get filter\n");
689 (*secfilter)->priv = filter;
691 memcpy(&((*secfilter)->filter_value[3]),
692 &(para->filter.filter[1]), DMX_FILTER_SIZE - 1);
693 memcpy(&(*secfilter)->filter_mask[3],
694 ¶->filter.mask[1], DMX_FILTER_SIZE - 1);
695 memcpy(&(*secfilter)->filter_mode[3],
696 ¶->filter.mode[1], DMX_FILTER_SIZE - 1);
698 (*secfilter)->filter_value[0] = para->filter.filter[0];
699 (*secfilter)->filter_mask[0] = para->filter.mask[0];
700 (*secfilter)->filter_mode[0] = para->filter.mode[0];
701 (*secfilter)->filter_mask[1] = 0;
702 (*secfilter)->filter_mask[2] = 0;
706 ret = filter->feed.sec->start_filtering(filter->feed.sec);
710 dvb_dmxdev_filter_timer(filter);
713 case DMXDEV_TYPE_PES:
714 list_for_each_entry(feed, &filter->feed.ts, next) {
715 ret = dvb_dmxdev_start_feed(dmxdev, filter, feed);
717 dvb_dmxdev_filter_stop(filter);
726 dvb_dmxdev_filter_state_set(filter, DMXDEV_STATE_GO);
730 static int dvb_demux_open(struct inode *inode, struct file *file)
732 struct dvb_device *dvbdev = file->private_data;
733 struct dmxdev *dmxdev = dvbdev->priv;
735 struct dmxdev_filter *dmxdevfilter;
740 if (mutex_lock_interruptible(&dmxdev->mutex))
743 for (i = 0; i < dmxdev->filternum; i++)
744 if (dmxdev->filter[i].state == DMXDEV_STATE_FREE)
747 if (i == dmxdev->filternum) {
748 mutex_unlock(&dmxdev->mutex);
752 dmxdevfilter = &dmxdev->filter[i];
753 mutex_init(&dmxdevfilter->mutex);
754 file->private_data = dmxdevfilter;
756 dvb_ringbuffer_init(&dmxdevfilter->buffer, NULL, 8192);
757 dmxdevfilter->type = DMXDEV_TYPE_NONE;
758 dvb_dmxdev_filter_state_set(dmxdevfilter, DMXDEV_STATE_ALLOCATED);
759 init_timer(&dmxdevfilter->timer);
763 mutex_unlock(&dmxdev->mutex);
767 static int dvb_dmxdev_filter_free(struct dmxdev *dmxdev,
768 struct dmxdev_filter *dmxdevfilter)
770 mutex_lock(&dmxdev->mutex);
771 mutex_lock(&dmxdevfilter->mutex);
773 dvb_dmxdev_filter_stop(dmxdevfilter);
774 dvb_dmxdev_filter_reset(dmxdevfilter);
776 if (dmxdevfilter->buffer.data) {
777 void *mem = dmxdevfilter->buffer.data;
779 spin_lock_irq(&dmxdev->lock);
780 dmxdevfilter->buffer.data = NULL;
781 spin_unlock_irq(&dmxdev->lock);
785 dvb_dmxdev_filter_state_set(dmxdevfilter, DMXDEV_STATE_FREE);
786 wake_up(&dmxdevfilter->buffer.queue);
787 mutex_unlock(&dmxdevfilter->mutex);
788 mutex_unlock(&dmxdev->mutex);
792 static inline void invert_mode(dmx_filter_t *filter)
796 for (i = 0; i < DMX_FILTER_SIZE; i++)
797 filter->mode[i] ^= 0xff;
800 static int dvb_dmxdev_add_pid(struct dmxdev *dmxdev,
801 struct dmxdev_filter *filter, u16 pid)
803 struct dmxdev_feed *feed;
805 if ((filter->type != DMXDEV_TYPE_PES) ||
806 (filter->state < DMXDEV_STATE_SET))
809 /* only TS packet filters may have multiple PIDs */
810 if ((filter->params.pes.output != DMX_OUT_TSDEMUX_TAP) &&
811 (!list_empty(&filter->feed.ts)))
814 feed = kzalloc(sizeof(struct dmxdev_feed), GFP_KERNEL);
819 list_add(&feed->next, &filter->feed.ts);
821 if (filter->state >= DMXDEV_STATE_GO)
822 return dvb_dmxdev_start_feed(dmxdev, filter, feed);
827 static int dvb_dmxdev_remove_pid(struct dmxdev *dmxdev,
828 struct dmxdev_filter *filter, u16 pid)
830 struct dmxdev_feed *feed, *tmp;
832 if ((filter->type != DMXDEV_TYPE_PES) ||
833 (filter->state < DMXDEV_STATE_SET))
836 list_for_each_entry_safe(feed, tmp, &filter->feed.ts, next) {
837 if ((feed->pid == pid) && (feed->ts != NULL)) {
838 feed->ts->stop_filtering(feed->ts);
839 filter->dev->demux->release_ts_feed(filter->dev->demux,
841 list_del(&feed->next);
849 static int dvb_dmxdev_filter_set(struct dmxdev *dmxdev,
850 struct dmxdev_filter *dmxdevfilter,
851 struct dmx_sct_filter_params *params)
853 dprintk("%s: PID=0x%04x, flags=%02x, timeout=%d\n",
854 __func__, params->pid, params->flags, params->timeout);
856 dvb_dmxdev_filter_stop(dmxdevfilter);
858 dmxdevfilter->type = DMXDEV_TYPE_SEC;
859 memcpy(&dmxdevfilter->params.sec,
860 params, sizeof(struct dmx_sct_filter_params));
861 invert_mode(&dmxdevfilter->params.sec.filter);
862 dvb_dmxdev_filter_state_set(dmxdevfilter, DMXDEV_STATE_SET);
864 if (params->flags & DMX_IMMEDIATE_START)
865 return dvb_dmxdev_filter_start(dmxdevfilter);
870 static int dvb_dmxdev_pes_filter_set(struct dmxdev *dmxdev,
871 struct dmxdev_filter *dmxdevfilter,
872 struct dmx_pes_filter_params *params)
876 dvb_dmxdev_filter_stop(dmxdevfilter);
877 dvb_dmxdev_filter_reset(dmxdevfilter);
879 if ((unsigned)params->pes_type > DMX_PES_OTHER)
882 dmxdevfilter->type = DMXDEV_TYPE_PES;
883 memcpy(&dmxdevfilter->params, params,
884 sizeof(struct dmx_pes_filter_params));
885 INIT_LIST_HEAD(&dmxdevfilter->feed.ts);
887 dvb_dmxdev_filter_state_set(dmxdevfilter, DMXDEV_STATE_SET);
889 ret = dvb_dmxdev_add_pid(dmxdev, dmxdevfilter,
890 dmxdevfilter->params.pes.pid);
894 if (params->flags & DMX_IMMEDIATE_START)
895 return dvb_dmxdev_filter_start(dmxdevfilter);
900 static ssize_t dvb_dmxdev_read_sec(struct dmxdev_filter *dfil,
901 struct file *file, char __user *buf,
902 size_t count, loff_t *ppos)
907 if (dfil->todo <= 0) {
908 hcount = 3 + dfil->todo;
911 result = dvb_dmxdev_buffer_read(&dfil->buffer,
912 file->f_flags & O_NONBLOCK,
918 if (copy_from_user(dfil->secheader - dfil->todo, buf, result))
923 dfil->todo -= result;
926 dfil->todo = ((dfil->secheader[1] << 8) | dfil->secheader[2]) & 0xfff;
930 if (count > dfil->todo)
932 result = dvb_dmxdev_buffer_read(&dfil->buffer,
933 file->f_flags & O_NONBLOCK,
937 dfil->todo -= result;
938 return (result + done);
942 dvb_demux_read(struct file *file, char __user *buf, size_t count,
945 struct dmxdev_filter *dmxdevfilter = file->private_data;
948 if (mutex_lock_interruptible(&dmxdevfilter->mutex))
951 if (dmxdevfilter->type == DMXDEV_TYPE_SEC)
952 ret = dvb_dmxdev_read_sec(dmxdevfilter, file, buf, count, ppos);
954 ret = dvb_dmxdev_buffer_read(&dmxdevfilter->buffer,
955 file->f_flags & O_NONBLOCK,
958 mutex_unlock(&dmxdevfilter->mutex);
962 static int dvb_demux_do_ioctl(struct file *file,
963 unsigned int cmd, void *parg)
965 struct dmxdev_filter *dmxdevfilter = file->private_data;
966 struct dmxdev *dmxdev = dmxdevfilter->dev;
967 unsigned long arg = (unsigned long)parg;
970 if (mutex_lock_interruptible(&dmxdev->mutex))
975 if (mutex_lock_interruptible(&dmxdevfilter->mutex)) {
976 mutex_unlock(&dmxdev->mutex);
979 if (dmxdevfilter->state < DMXDEV_STATE_SET)
982 ret = dvb_dmxdev_filter_start(dmxdevfilter);
983 mutex_unlock(&dmxdevfilter->mutex);
987 if (mutex_lock_interruptible(&dmxdevfilter->mutex)) {
988 mutex_unlock(&dmxdev->mutex);
991 ret = dvb_dmxdev_filter_stop(dmxdevfilter);
992 mutex_unlock(&dmxdevfilter->mutex);
996 if (mutex_lock_interruptible(&dmxdevfilter->mutex)) {
997 mutex_unlock(&dmxdev->mutex);
1000 ret = dvb_dmxdev_filter_set(dmxdev, dmxdevfilter, parg);
1001 mutex_unlock(&dmxdevfilter->mutex);
1004 case DMX_SET_PES_FILTER:
1005 if (mutex_lock_interruptible(&dmxdevfilter->mutex)) {
1006 mutex_unlock(&dmxdev->mutex);
1007 return -ERESTARTSYS;
1009 ret = dvb_dmxdev_pes_filter_set(dmxdev, dmxdevfilter, parg);
1010 mutex_unlock(&dmxdevfilter->mutex);
1013 case DMX_SET_BUFFER_SIZE:
1014 if (mutex_lock_interruptible(&dmxdevfilter->mutex)) {
1015 mutex_unlock(&dmxdev->mutex);
1016 return -ERESTARTSYS;
1018 ret = dvb_dmxdev_set_buffer_size(dmxdevfilter, arg);
1019 mutex_unlock(&dmxdevfilter->mutex);
1022 case DMX_GET_PES_PIDS:
1023 if (!dmxdev->demux->get_pes_pids) {
1027 dmxdev->demux->get_pes_pids(dmxdev->demux, parg);
1031 /* Not used upstream and never documented */
1034 if (!dmxdev->demux->get_caps) {
1038 ret = dmxdev->demux->get_caps(dmxdev->demux, parg);
1041 case DMX_SET_SOURCE:
1042 if (!dmxdev->demux->set_source) {
1046 ret = dmxdev->demux->set_source(dmxdev->demux, parg);
1051 if (!dmxdev->demux->get_stc) {
1055 ret = dmxdev->demux->get_stc(dmxdev->demux,
1056 ((struct dmx_stc *)parg)->num,
1057 &((struct dmx_stc *)parg)->stc,
1058 &((struct dmx_stc *)parg)->base);
1062 if (mutex_lock_interruptible(&dmxdevfilter->mutex)) {
1066 ret = dvb_dmxdev_add_pid(dmxdev, dmxdevfilter, *(u16 *)parg);
1067 mutex_unlock(&dmxdevfilter->mutex);
1070 case DMX_REMOVE_PID:
1071 if (mutex_lock_interruptible(&dmxdevfilter->mutex)) {
1075 ret = dvb_dmxdev_remove_pid(dmxdev, dmxdevfilter, *(u16 *)parg);
1076 mutex_unlock(&dmxdevfilter->mutex);
1083 mutex_unlock(&dmxdev->mutex);
1087 static long dvb_demux_ioctl(struct file *file, unsigned int cmd,
1090 return dvb_usercopy(file, cmd, arg, dvb_demux_do_ioctl);
1093 static unsigned int dvb_demux_poll(struct file *file, poll_table *wait)
1095 struct dmxdev_filter *dmxdevfilter = file->private_data;
1096 unsigned int mask = 0;
1098 if ((!dmxdevfilter) || dmxdevfilter->dev->exit)
1101 poll_wait(file, &dmxdevfilter->buffer.queue, wait);
1103 if (dmxdevfilter->state != DMXDEV_STATE_GO &&
1104 dmxdevfilter->state != DMXDEV_STATE_DONE &&
1105 dmxdevfilter->state != DMXDEV_STATE_TIMEDOUT)
1108 if (dmxdevfilter->buffer.error)
1109 mask |= (POLLIN | POLLRDNORM | POLLPRI | POLLERR);
1111 if (!dvb_ringbuffer_empty(&dmxdevfilter->buffer))
1112 mask |= (POLLIN | POLLRDNORM | POLLPRI);
1117 static int dvb_demux_release(struct inode *inode, struct file *file)
1119 struct dmxdev_filter *dmxdevfilter = file->private_data;
1120 struct dmxdev *dmxdev = dmxdevfilter->dev;
1124 ret = dvb_dmxdev_filter_free(dmxdev, dmxdevfilter);
1126 mutex_lock(&dmxdev->mutex);
1127 dmxdev->dvbdev->users--;
1128 if(dmxdev->dvbdev->users==1 && dmxdev->exit==1) {
1129 mutex_unlock(&dmxdev->mutex);
1130 wake_up(&dmxdev->dvbdev->wait_queue);
1132 mutex_unlock(&dmxdev->mutex);
1137 static const struct file_operations dvb_demux_fops = {
1138 .owner = THIS_MODULE,
1139 .read = dvb_demux_read,
1140 .unlocked_ioctl = dvb_demux_ioctl,
1141 .open = dvb_demux_open,
1142 .release = dvb_demux_release,
1143 .poll = dvb_demux_poll,
1144 .llseek = default_llseek,
1147 static const struct dvb_device dvbdev_demux = {
1151 #if defined(CONFIG_MEDIA_CONTROLLER_DVB)
1152 .name = "dvb-demux",
1154 .fops = &dvb_demux_fops
1157 static int dvb_dvr_do_ioctl(struct file *file,
1158 unsigned int cmd, void *parg)
1160 struct dvb_device *dvbdev = file->private_data;
1161 struct dmxdev *dmxdev = dvbdev->priv;
1162 unsigned long arg = (unsigned long)parg;
1165 if (mutex_lock_interruptible(&dmxdev->mutex))
1166 return -ERESTARTSYS;
1169 case DMX_SET_BUFFER_SIZE:
1170 ret = dvb_dvr_set_buffer_size(dmxdev, arg);
1177 mutex_unlock(&dmxdev->mutex);
1181 static long dvb_dvr_ioctl(struct file *file,
1182 unsigned int cmd, unsigned long arg)
1184 return dvb_usercopy(file, cmd, arg, dvb_dvr_do_ioctl);
1187 static unsigned int dvb_dvr_poll(struct file *file, poll_table *wait)
1189 struct dvb_device *dvbdev = file->private_data;
1190 struct dmxdev *dmxdev = dvbdev->priv;
1191 unsigned int mask = 0;
1193 dprintk("%s\n", __func__);
1198 poll_wait(file, &dmxdev->dvr_buffer.queue, wait);
1200 if ((file->f_flags & O_ACCMODE) == O_RDONLY) {
1201 if (dmxdev->dvr_buffer.error)
1202 mask |= (POLLIN | POLLRDNORM | POLLPRI | POLLERR);
1204 if (!dvb_ringbuffer_empty(&dmxdev->dvr_buffer))
1205 mask |= (POLLIN | POLLRDNORM | POLLPRI);
1207 mask |= (POLLOUT | POLLWRNORM | POLLPRI);
1212 static const struct file_operations dvb_dvr_fops = {
1213 .owner = THIS_MODULE,
1214 .read = dvb_dvr_read,
1215 .write = dvb_dvr_write,
1216 .unlocked_ioctl = dvb_dvr_ioctl,
1217 .open = dvb_dvr_open,
1218 .release = dvb_dvr_release,
1219 .poll = dvb_dvr_poll,
1220 .llseek = default_llseek,
1223 static const struct dvb_device dvbdev_dvr = {
1227 #if defined(CONFIG_MEDIA_CONTROLLER_DVB)
1230 .fops = &dvb_dvr_fops
1232 int dvb_dmxdev_init(struct dmxdev *dmxdev, struct dvb_adapter *dvb_adapter)
1236 if (dmxdev->demux->open(dmxdev->demux) < 0)
1239 dmxdev->filter = vmalloc(dmxdev->filternum * sizeof(struct dmxdev_filter));
1240 if (!dmxdev->filter)
1243 mutex_init(&dmxdev->mutex);
1244 spin_lock_init(&dmxdev->lock);
1245 for (i = 0; i < dmxdev->filternum; i++) {
1246 dmxdev->filter[i].dev = dmxdev;
1247 dmxdev->filter[i].buffer.data = NULL;
1248 dvb_dmxdev_filter_state_set(&dmxdev->filter[i],
1252 dvb_register_device(dvb_adapter, &dmxdev->dvbdev, &dvbdev_demux, dmxdev,
1253 DVB_DEVICE_DEMUX, dmxdev->filternum);
1254 dvb_register_device(dvb_adapter, &dmxdev->dvr_dvbdev, &dvbdev_dvr,
1255 dmxdev, DVB_DEVICE_DVR, dmxdev->filternum);
1257 dvb_ringbuffer_init(&dmxdev->dvr_buffer, NULL, 8192);
1262 EXPORT_SYMBOL(dvb_dmxdev_init);
1264 void dvb_dmxdev_release(struct dmxdev *dmxdev)
1267 if (dmxdev->dvbdev->users > 1) {
1268 wait_event(dmxdev->dvbdev->wait_queue,
1269 dmxdev->dvbdev->users==1);
1271 if (dmxdev->dvr_dvbdev->users > 1) {
1272 wait_event(dmxdev->dvr_dvbdev->wait_queue,
1273 dmxdev->dvr_dvbdev->users==1);
1276 dvb_unregister_device(dmxdev->dvbdev);
1277 dvb_unregister_device(dmxdev->dvr_dvbdev);
1279 vfree(dmxdev->filter);
1280 dmxdev->filter = NULL;
1281 dmxdev->demux->close(dmxdev->demux);
1284 EXPORT_SYMBOL(dvb_dmxdev_release);