/*
* dmxdev.c - DVB demultiplexer device
*
- * Copyright (C) 2000 Ralph Metzler <ralph@convergence.de>
- * & Marcus Metzler <marcus@convergence.de>
- for convergence integrated media GmbH
+ * Copyright (C) 2000 Ralph Metzler & Marcus Metzler
+ * for convergence integrated media GmbH
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public License
#include <linux/slab.h>
#include <linux/vmalloc.h>
#include <linux/module.h>
-#include <linux/moduleparam.h>
-#include <linux/sched.h>
#include <linux/poll.h>
#include <linux/ioctl.h>
#include <linux/wait.h>
#include <asm/uaccess.h>
#include <asm/system.h>
-
#include "dmxdev.h"
static int debug;
#define dprintk if (debug) printk
-static inline struct dmxdev_filter *
-dvb_dmxdev_file_to_filter(struct file *file)
-{
- return (struct dmxdev_filter *) file->private_data;
-}
-
-static inline void dvb_dmxdev_buffer_init(struct dmxdev_buffer *buffer)
-{
- buffer->data=NULL;
- buffer->size=8192;
- buffer->pread=0;
- buffer->pwrite=0;
- buffer->error=0;
- init_waitqueue_head(&buffer->queue);
-}
-
-static inline int dvb_dmxdev_buffer_write(struct dmxdev_buffer *buf, const u8 *src, int len)
+static int dvb_dmxdev_buffer_write(struct dvb_ringbuffer *buf,
+ const u8 *src, size_t len)
{
- int split;
- int free;
- int todo;
+ ssize_t free;
if (!len)
return 0;
if (!buf->data)
return 0;
- free=buf->pread-buf->pwrite;
- split=0;
- if (free<=0) {
- free+=buf->size;
- split=buf->size-buf->pwrite;
- }
- if (len>=free) {
+ free = dvb_ringbuffer_free(buf);
+ if (len > free) {
dprintk("dmxdev: buffer overflow\n");
- return -1;
- }
- if (split>=len)
- split=0;
- todo=len;
- if (split) {
- memcpy(buf->data + buf->pwrite, src, split);
- todo-=split;
- buf->pwrite=0;
+ return -EOVERFLOW;
}
- memcpy(buf->data + buf->pwrite, src+split, todo);
- buf->pwrite=(buf->pwrite+todo)%buf->size;
- return len;
+
+ return dvb_ringbuffer_write(buf, src, len);
}
-static ssize_t dvb_dmxdev_buffer_read(struct dmxdev_buffer *src,
- int non_blocking, char __user *buf, size_t count, loff_t *ppos)
+static ssize_t dvb_dmxdev_buffer_read(struct dvb_ringbuffer *src,
+ int non_blocking, char __user *buf,
+ size_t count, loff_t *ppos)
{
- unsigned long todo=count;
- int split, avail, error;
+ size_t todo;
+ ssize_t avail;
+ ssize_t ret = 0;
if (!src->data)
return 0;
- if ((error=src->error)) {
- src->pwrite=src->pread;
- src->error=0;
- return error;
+ if (src->error) {
+ ret = src->error;
+ dvb_ringbuffer_flush(src);
+ return ret;
}
- if (non_blocking && (src->pwrite==src->pread))
- return -EWOULDBLOCK;
-
- while (todo>0) {
- if (non_blocking && (src->pwrite==src->pread))
- return (count-todo) ? (count-todo) : -EWOULDBLOCK;
+ for (todo = count; todo > 0; todo -= ret) {
+ if (non_blocking && dvb_ringbuffer_empty(src)) {
+ ret = -EWOULDBLOCK;
+ break;
+ }
- if (wait_event_interruptible(src->queue,
- (src->pread!=src->pwrite) ||
- (src->error))<0)
- return count-todo;
+ ret = wait_event_interruptible(src->queue,
+ !dvb_ringbuffer_empty(src) ||
+ (src->error != 0));
+ if (ret < 0)
+ break;
- if ((error=src->error)) {
- src->pwrite=src->pread;
- src->error=0;
- return error;
+ if (src->error) {
+ ret = src->error;
+ dvb_ringbuffer_flush(src);
+ break;
}
- split=src->size;
- avail=src->pwrite - src->pread;
- if (avail<0) {
- avail+=src->size;
- split=src->size - src->pread;
- }
- if (avail>todo)
- avail=todo;
- if (split<avail) {
- if (copy_to_user(buf, src->data+src->pread, split))
- return -EFAULT;
- buf+=split;
- src->pread=0;
- todo-=split;
- avail-=split;
- }
- if (avail) {
- if (copy_to_user(buf, src->data+src->pread, avail))
- return -EFAULT;
- src->pread = (src->pread + avail) % src->size;
- todo-=avail;
- buf+=avail;
- }
+ avail = dvb_ringbuffer_avail(src);
+ if (avail > todo)
+ avail = todo;
+
+ ret = dvb_ringbuffer_read_user(src, buf, avail);
+ if (ret < 0)
+ break;
+
+ buf += ret;
}
- return count;
+
+ return (count - todo) ? (count - todo) : ret;
}
-static struct dmx_frontend * get_fe(struct dmx_demux *demux, int type)
+static struct dmx_frontend *get_fe(struct dmx_demux *demux, int type)
{
struct list_head *head, *pos;
- head=demux->get_frontends(demux);
+ head = demux->get_frontends(demux);
if (!head)
return NULL;
list_for_each(pos, head)
- if (DMX_FE_ENTRY(pos)->source==type)
+ if (DMX_FE_ENTRY(pos)->source == type)
return DMX_FE_ENTRY(pos);
return NULL;
}
-static inline void dvb_dmxdev_dvr_state_set(struct dmxdev_dvr *dmxdevdvr, int state)
-{
- spin_lock_irq(&dmxdevdvr->dev->lock);
- dmxdevdvr->state=state;
- spin_unlock_irq(&dmxdevdvr->dev->lock);
-}
-
static int dvb_dvr_open(struct inode *inode, struct file *file)
{
struct dvb_device *dvbdev = file->private_data;
struct dmxdev *dmxdev = dvbdev->priv;
struct dmx_frontend *front;
- dprintk ("function : %s\n", __FUNCTION__);
+ dprintk("function : %s\n", __func__);
- if (down_interruptible (&dmxdev->mutex))
+ if (mutex_lock_interruptible(&dmxdev->mutex))
return -ERESTARTSYS;
- if ((file->f_flags&O_ACCMODE)==O_RDWR) {
- if (!(dmxdev->capabilities&DMXDEV_CAP_DUPLEX)) {
- up(&dmxdev->mutex);
+ if (dmxdev->exit) {
+ mutex_unlock(&dmxdev->mutex);
+ return -ENODEV;
+ }
+
+ if ((file->f_flags & O_ACCMODE) == O_RDWR) {
+ if (!(dmxdev->capabilities & DMXDEV_CAP_DUPLEX)) {
+ mutex_unlock(&dmxdev->mutex);
return -EOPNOTSUPP;
}
}
- if ((file->f_flags&O_ACCMODE)==O_RDONLY) {
- dvb_dmxdev_buffer_init(&dmxdev->dvr_buffer);
- dmxdev->dvr_buffer.size=DVR_BUFFER_SIZE;
- dmxdev->dvr_buffer.data=vmalloc(DVR_BUFFER_SIZE);
- if (!dmxdev->dvr_buffer.data) {
- up(&dmxdev->mutex);
- return -ENOMEM;
- }
+ if ((file->f_flags & O_ACCMODE) == O_RDONLY) {
+ void *mem;
+ if (!dvbdev->readers) {
+ mutex_unlock(&dmxdev->mutex);
+ return -EBUSY;
+ }
+ mem = vmalloc(DVR_BUFFER_SIZE);
+ if (!mem) {
+ mutex_unlock(&dmxdev->mutex);
+ return -ENOMEM;
+ }
+ dvb_ringbuffer_init(&dmxdev->dvr_buffer, mem, DVR_BUFFER_SIZE);
+ dvbdev->readers--;
}
- if ((file->f_flags&O_ACCMODE)==O_WRONLY) {
- dmxdev->dvr_orig_fe=dmxdev->demux->frontend;
+ if ((file->f_flags & O_ACCMODE) == O_WRONLY) {
+ dmxdev->dvr_orig_fe = dmxdev->demux->frontend;
if (!dmxdev->demux->write) {
- up(&dmxdev->mutex);
+ mutex_unlock(&dmxdev->mutex);
return -EOPNOTSUPP;
}
- front=get_fe(dmxdev->demux, DMX_MEMORY_FE);
+ front = get_fe(dmxdev->demux, DMX_MEMORY_FE);
if (!front) {
- up(&dmxdev->mutex);
+ mutex_unlock(&dmxdev->mutex);
return -EINVAL;
}
dmxdev->demux->disconnect_frontend(dmxdev->demux);
dmxdev->demux->connect_frontend(dmxdev->demux, front);
}
- up(&dmxdev->mutex);
+ dvbdev->users++;
+ mutex_unlock(&dmxdev->mutex);
return 0;
}
struct dvb_device *dvbdev = file->private_data;
struct dmxdev *dmxdev = dvbdev->priv;
- if (down_interruptible (&dmxdev->mutex))
- return -ERESTARTSYS;
+ mutex_lock(&dmxdev->mutex);
- if ((file->f_flags&O_ACCMODE)==O_WRONLY) {
+ if ((file->f_flags & O_ACCMODE) == O_WRONLY) {
dmxdev->demux->disconnect_frontend(dmxdev->demux);
dmxdev->demux->connect_frontend(dmxdev->demux,
dmxdev->dvr_orig_fe);
}
- if ((file->f_flags&O_ACCMODE)==O_RDONLY) {
+ if ((file->f_flags & O_ACCMODE) == O_RDONLY) {
+ dvbdev->readers++;
if (dmxdev->dvr_buffer.data) {
- void *mem=dmxdev->dvr_buffer.data;
+ void *mem = dmxdev->dvr_buffer.data;
mb();
spin_lock_irq(&dmxdev->lock);
- dmxdev->dvr_buffer.data=NULL;
+ dmxdev->dvr_buffer.data = NULL;
spin_unlock_irq(&dmxdev->lock);
vfree(mem);
}
}
- up(&dmxdev->mutex);
+ /* TODO */
+ dvbdev->users--;
+ if(dvbdev->users==-1 && dmxdev->exit==1) {
+ fops_put(file->f_op);
+ file->f_op = NULL;
+ mutex_unlock(&dmxdev->mutex);
+ wake_up(&dvbdev->wait_queue);
+ } else
+ mutex_unlock(&dmxdev->mutex);
+
return 0;
}
static ssize_t dvb_dvr_write(struct file *file, const char __user *buf,
- size_t count, loff_t *ppos)
+ size_t count, loff_t *ppos)
{
struct dvb_device *dvbdev = file->private_data;
struct dmxdev *dmxdev = dvbdev->priv;
if (!dmxdev->demux->write)
return -EOPNOTSUPP;
- if ((file->f_flags&O_ACCMODE)!=O_WRONLY)
+ if ((file->f_flags & O_ACCMODE) != O_WRONLY)
return -EINVAL;
- if (down_interruptible (&dmxdev->mutex))
+ if (mutex_lock_interruptible(&dmxdev->mutex))
return -ERESTARTSYS;
- ret=dmxdev->demux->write(dmxdev->demux, buf, count);
- up(&dmxdev->mutex);
+
+ if (dmxdev->exit) {
+ mutex_unlock(&dmxdev->mutex);
+ return -ENODEV;
+ }
+ ret = dmxdev->demux->write(dmxdev->demux, buf, count);
+ mutex_unlock(&dmxdev->mutex);
return ret;
}
static ssize_t dvb_dvr_read(struct file *file, char __user *buf, size_t count,
- loff_t *ppos)
+ loff_t *ppos)
{
struct dvb_device *dvbdev = file->private_data;
struct dmxdev *dmxdev = dvbdev->priv;
- int ret;
- //down(&dmxdev->mutex);
- ret= dvb_dmxdev_buffer_read(&dmxdev->dvr_buffer,
- file->f_flags&O_NONBLOCK,
- buf, count, ppos);
- //up(&dmxdev->mutex);
- return ret;
+ if (dmxdev->exit)
+ return -ENODEV;
+
+ return dvb_dmxdev_buffer_read(&dmxdev->dvr_buffer,
+ file->f_flags & O_NONBLOCK,
+ buf, count, ppos);
+}
+
+static int dvb_dvr_set_buffer_size(struct dmxdev *dmxdev,
+ unsigned long size)
+{
+ struct dvb_ringbuffer *buf = &dmxdev->dvr_buffer;
+ void *newmem;
+ void *oldmem;
+
+ dprintk("function : %s\n", __func__);
+
+ if (buf->size == size)
+ return 0;
+ if (!size)
+ return -EINVAL;
+
+ newmem = vmalloc(size);
+ if (!newmem)
+ return -ENOMEM;
+
+ oldmem = buf->data;
+
+ spin_lock_irq(&dmxdev->lock);
+ buf->data = newmem;
+ buf->size = size;
+
+ /* reset and not flush in case the buffer shrinks */
+ dvb_ringbuffer_reset(buf);
+ spin_unlock_irq(&dmxdev->lock);
+
+ vfree(oldmem);
+
+ return 0;
}
-static inline void dvb_dmxdev_filter_state_set(struct dmxdev_filter *dmxdevfilter, int state)
+static inline void dvb_dmxdev_filter_state_set(struct dmxdev_filter
+ *dmxdevfilter, int state)
{
spin_lock_irq(&dmxdevfilter->dev->lock);
- dmxdevfilter->state=state;
+ dmxdevfilter->state = state;
spin_unlock_irq(&dmxdevfilter->dev->lock);
}
-static int dvb_dmxdev_set_buffer_size(struct dmxdev_filter *dmxdevfilter, unsigned long size)
+static int dvb_dmxdev_set_buffer_size(struct dmxdev_filter *dmxdevfilter,
+ unsigned long size)
{
- struct dmxdev_buffer *buf=&dmxdevfilter->buffer;
- void *mem;
+ struct dvb_ringbuffer *buf = &dmxdevfilter->buffer;
+ void *newmem;
+ void *oldmem;
- if (buf->size==size)
+ if (buf->size == size)
return 0;
- if (dmxdevfilter->state>=DMXDEV_STATE_GO)
+ if (!size)
+ return -EINVAL;
+ if (dmxdevfilter->state >= DMXDEV_STATE_GO)
return -EBUSY;
+
+ newmem = vmalloc(size);
+ if (!newmem)
+ return -ENOMEM;
+
+ oldmem = buf->data;
+
spin_lock_irq(&dmxdevfilter->dev->lock);
- mem=buf->data;
- buf->data=NULL;
- buf->size=size;
- buf->pwrite=buf->pread=0;
+ buf->data = newmem;
+ buf->size = size;
+
+ /* reset and not flush in case the buffer shrinks */
+ dvb_ringbuffer_reset(buf);
spin_unlock_irq(&dmxdevfilter->dev->lock);
- vfree(mem);
- if (buf->size) {
- mem=vmalloc(dmxdevfilter->buffer.size);
- if (!mem)
- return -ENOMEM;
- spin_lock_irq(&dmxdevfilter->dev->lock);
- buf->data=mem;
- spin_unlock_irq(&dmxdevfilter->dev->lock);
- }
+ vfree(oldmem);
+
return 0;
}
static void dvb_dmxdev_filter_timeout(unsigned long data)
{
- struct dmxdev_filter *dmxdevfilter=(struct dmxdev_filter *)data;
+ struct dmxdev_filter *dmxdevfilter = (struct dmxdev_filter *)data;
- dmxdevfilter->buffer.error=-ETIMEDOUT;
+ dmxdevfilter->buffer.error = -ETIMEDOUT;
spin_lock_irq(&dmxdevfilter->dev->lock);
- dmxdevfilter->state=DMXDEV_STATE_TIMEDOUT;
+ dmxdevfilter->state = DMXDEV_STATE_TIMEDOUT;
spin_unlock_irq(&dmxdevfilter->dev->lock);
wake_up(&dmxdevfilter->buffer.queue);
}
static void dvb_dmxdev_filter_timer(struct dmxdev_filter *dmxdevfilter)
{
- struct dmx_sct_filter_params *para=&dmxdevfilter->params.sec;
+ struct dmx_sct_filter_params *para = &dmxdevfilter->params.sec;
del_timer(&dmxdevfilter->timer);
if (para->timeout) {
- dmxdevfilter->timer.function=dvb_dmxdev_filter_timeout;
- dmxdevfilter->timer.data=(unsigned long) dmxdevfilter;
- dmxdevfilter->timer.expires=jiffies+1+(HZ/2+HZ*para->timeout)/1000;
+ dmxdevfilter->timer.function = dvb_dmxdev_filter_timeout;
+ dmxdevfilter->timer.data = (unsigned long)dmxdevfilter;
+ dmxdevfilter->timer.expires =
+ jiffies + 1 + (HZ / 2 + HZ * para->timeout) / 1000;
add_timer(&dmxdevfilter->timer);
}
}
static int dvb_dmxdev_section_callback(const u8 *buffer1, size_t buffer1_len,
- const u8 *buffer2, size_t buffer2_len,
- struct dmx_section_filter *filter, enum dmx_success success)
+ const u8 *buffer2, size_t buffer2_len,
+ struct dmx_section_filter *filter,
+ enum dmx_success success)
{
struct dmxdev_filter *dmxdevfilter = filter->priv;
int ret;
return 0;
}
spin_lock(&dmxdevfilter->dev->lock);
- if (dmxdevfilter->state!=DMXDEV_STATE_GO) {
+ if (dmxdevfilter->state != DMXDEV_STATE_GO) {
spin_unlock(&dmxdevfilter->dev->lock);
return 0;
}
del_timer(&dmxdevfilter->timer);
dprintk("dmxdev: section callback %02x %02x %02x %02x %02x %02x\n",
buffer1[0], buffer1[1],
- buffer1[2], buffer1[3],
- buffer1[4], buffer1[5]);
- ret=dvb_dmxdev_buffer_write(&dmxdevfilter->buffer, buffer1, buffer1_len);
- if (ret==buffer1_len) {
- ret=dvb_dmxdev_buffer_write(&dmxdevfilter->buffer, buffer2, buffer2_len);
+ buffer1[2], buffer1[3], buffer1[4], buffer1[5]);
+ ret = dvb_dmxdev_buffer_write(&dmxdevfilter->buffer, buffer1,
+ buffer1_len);
+ if (ret == buffer1_len) {
+ ret = dvb_dmxdev_buffer_write(&dmxdevfilter->buffer, buffer2,
+ buffer2_len);
}
- if (ret<0) {
- dmxdevfilter->buffer.pwrite=dmxdevfilter->buffer.pread;
- dmxdevfilter->buffer.error=-EOVERFLOW;
+ if (ret < 0) {
+ dvb_ringbuffer_flush(&dmxdevfilter->buffer);
+ dmxdevfilter->buffer.error = ret;
}
- if (dmxdevfilter->params.sec.flags&DMX_ONESHOT)
- dmxdevfilter->state=DMXDEV_STATE_DONE;
+ if (dmxdevfilter->params.sec.flags & DMX_ONESHOT)
+ dmxdevfilter->state = DMXDEV_STATE_DONE;
spin_unlock(&dmxdevfilter->dev->lock);
wake_up(&dmxdevfilter->buffer.queue);
return 0;
}
static int dvb_dmxdev_ts_callback(const u8 *buffer1, size_t buffer1_len,
- const u8 *buffer2, size_t buffer2_len,
- struct dmx_ts_feed *feed, enum dmx_success success)
+ const u8 *buffer2, size_t buffer2_len,
+ struct dmx_ts_feed *feed,
+ enum dmx_success success)
{
struct dmxdev_filter *dmxdevfilter = feed->priv;
- struct dmxdev_buffer *buffer;
+ struct dvb_ringbuffer *buffer;
int ret;
spin_lock(&dmxdevfilter->dev->lock);
- if (dmxdevfilter->params.pes.output==DMX_OUT_DECODER) {
+ if (dmxdevfilter->params.pes.output == DMX_OUT_DECODER) {
spin_unlock(&dmxdevfilter->dev->lock);
return 0;
}
- if (dmxdevfilter->params.pes.output==DMX_OUT_TAP)
- buffer=&dmxdevfilter->buffer;
+ if (dmxdevfilter->params.pes.output == DMX_OUT_TAP
+ || dmxdevfilter->params.pes.output == DMX_OUT_TSDEMUX_TAP)
+ buffer = &dmxdevfilter->buffer;
else
- buffer=&dmxdevfilter->dev->dvr_buffer;
+ buffer = &dmxdevfilter->dev->dvr_buffer;
if (buffer->error) {
spin_unlock(&dmxdevfilter->dev->lock);
wake_up(&buffer->queue);
return 0;
}
- ret=dvb_dmxdev_buffer_write(buffer, buffer1, buffer1_len);
- if (ret==buffer1_len)
- ret=dvb_dmxdev_buffer_write(buffer, buffer2, buffer2_len);
- if (ret<0) {
- buffer->pwrite=buffer->pread;
- buffer->error=-EOVERFLOW;
+ ret = dvb_dmxdev_buffer_write(buffer, buffer1, buffer1_len);
+ if (ret == buffer1_len)
+ ret = dvb_dmxdev_buffer_write(buffer, buffer2, buffer2_len);
+ if (ret < 0) {
+ dvb_ringbuffer_flush(buffer);
+ buffer->error = ret;
}
spin_unlock(&dmxdevfilter->dev->lock);
wake_up(&buffer->queue);
return 0;
}
-
/* stop feed but only mark the specified filter as stopped (state set) */
-
static int dvb_dmxdev_feed_stop(struct dmxdev_filter *dmxdevfilter)
{
+ struct dmxdev_feed *feed;
+
dvb_dmxdev_filter_state_set(dmxdevfilter, DMXDEV_STATE_SET);
switch (dmxdevfilter->type) {
dmxdevfilter->feed.sec->stop_filtering(dmxdevfilter->feed.sec);
break;
case DMXDEV_TYPE_PES:
- dmxdevfilter->feed.ts->stop_filtering(dmxdevfilter->feed.ts);
+ list_for_each_entry(feed, &dmxdevfilter->feed.ts, next)
+ feed->ts->stop_filtering(feed->ts);
break;
default:
return -EINVAL;
return 0;
}
-
/* start feed associated with the specified filter */
-
static int dvb_dmxdev_feed_start(struct dmxdev_filter *filter)
{
- dvb_dmxdev_filter_state_set (filter, DMXDEV_STATE_GO);
+ struct dmxdev_feed *feed;
+ int ret;
+
+ dvb_dmxdev_filter_state_set(filter, DMXDEV_STATE_GO);
switch (filter->type) {
case DMXDEV_TYPE_SEC:
return filter->feed.sec->start_filtering(filter->feed.sec);
- break;
case DMXDEV_TYPE_PES:
- return filter->feed.ts->start_filtering(filter->feed.ts);
+ list_for_each_entry(feed, &filter->feed.ts, next) {
+ ret = feed->ts->start_filtering(feed->ts);
+ if (ret < 0) {
+ dvb_dmxdev_feed_stop(filter);
+ return ret;
+ }
+ }
break;
default:
return -EINVAL;
return 0;
}
-
/* restart section feed if it has filters left associated with it,
otherwise release the feed */
-
static int dvb_dmxdev_feed_restart(struct dmxdev_filter *filter)
{
int i;
struct dmxdev *dmxdev = filter->dev;
u16 pid = filter->params.sec.pid;
- for (i=0; i<dmxdev->filternum; i++)
- if (dmxdev->filter[i].state>=DMXDEV_STATE_GO &&
- dmxdev->filter[i].type==DMXDEV_TYPE_SEC &&
- dmxdev->filter[i].pid==pid) {
+ for (i = 0; i < dmxdev->filternum; i++)
+ if (dmxdev->filter[i].state >= DMXDEV_STATE_GO &&
+ dmxdev->filter[i].type == DMXDEV_TYPE_SEC &&
+ dmxdev->filter[i].params.sec.pid == pid) {
dvb_dmxdev_feed_start(&dmxdev->filter[i]);
return 0;
}
- filter->dev->demux->release_section_feed(dmxdev->demux, filter->feed.sec);
+ filter->dev->demux->release_section_feed(dmxdev->demux,
+ filter->feed.sec);
return 0;
}
static int dvb_dmxdev_filter_stop(struct dmxdev_filter *dmxdevfilter)
{
- if (dmxdevfilter->state<DMXDEV_STATE_GO)
+ struct dmxdev_feed *feed;
+ struct dmx_demux *demux;
+
+ if (dmxdevfilter->state < DMXDEV_STATE_GO)
return 0;
switch (dmxdevfilter->type) {
dvb_dmxdev_feed_stop(dmxdevfilter);
if (dmxdevfilter->filter.sec)
dmxdevfilter->feed.sec->
- release_filter(dmxdevfilter->feed.sec,
- dmxdevfilter->filter.sec);
+ release_filter(dmxdevfilter->feed.sec,
+ dmxdevfilter->filter.sec);
dvb_dmxdev_feed_restart(dmxdevfilter);
- dmxdevfilter->feed.sec=NULL;
+ dmxdevfilter->feed.sec = NULL;
break;
case DMXDEV_TYPE_PES:
- if (!dmxdevfilter->feed.ts)
- break;
dvb_dmxdev_feed_stop(dmxdevfilter);
- dmxdevfilter->dev->demux->
- release_ts_feed(dmxdevfilter->dev->demux,
- dmxdevfilter->feed.ts);
- dmxdevfilter->feed.ts=NULL;
+ demux = dmxdevfilter->dev->demux;
+ list_for_each_entry(feed, &dmxdevfilter->feed.ts, next) {
+ demux->release_ts_feed(demux, feed->ts);
+ feed->ts = NULL;
+ }
break;
default:
- if (dmxdevfilter->state==DMXDEV_STATE_ALLOCATED)
+ if (dmxdevfilter->state == DMXDEV_STATE_ALLOCATED)
return 0;
return -EINVAL;
}
- dmxdevfilter->buffer.pwrite=dmxdevfilter->buffer.pread=0;
+
+ dvb_ringbuffer_flush(&dmxdevfilter->buffer);
return 0;
}
+static void dvb_dmxdev_delete_pids(struct dmxdev_filter *dmxdevfilter)
+{
+ struct dmxdev_feed *feed, *tmp;
+
+ /* delete all PIDs */
+ list_for_each_entry_safe(feed, tmp, &dmxdevfilter->feed.ts, next) {
+ list_del(&feed->next);
+ kfree(feed);
+ }
+
+ BUG_ON(!list_empty(&dmxdevfilter->feed.ts));
+}
+
static inline int dvb_dmxdev_filter_reset(struct dmxdev_filter *dmxdevfilter)
{
- if (dmxdevfilter->state<DMXDEV_STATE_SET)
+ if (dmxdevfilter->state < DMXDEV_STATE_SET)
return 0;
- dmxdevfilter->type=DMXDEV_TYPE_NONE;
- dmxdevfilter->pid=0xffff;
+ if (dmxdevfilter->type == DMXDEV_TYPE_PES)
+ dvb_dmxdev_delete_pids(dmxdevfilter);
+
+ dmxdevfilter->type = DMXDEV_TYPE_NONE;
dvb_dmxdev_filter_state_set(dmxdevfilter, DMXDEV_STATE_ALLOCATED);
return 0;
}
+static int dvb_dmxdev_start_feed(struct dmxdev *dmxdev,
+ struct dmxdev_filter *filter,
+ struct dmxdev_feed *feed)
+{
+ struct timespec timeout = { 0 };
+ struct dmx_pes_filter_params *para = &filter->params.pes;
+ dmx_output_t otype;
+ int ret;
+ int ts_type;
+ enum dmx_ts_pes ts_pes;
+ struct dmx_ts_feed *tsfeed;
+
+ feed->ts = NULL;
+ otype = para->output;
+
+ ts_pes = (enum dmx_ts_pes)para->pes_type;
+
+ if (ts_pes < DMX_PES_OTHER)
+ ts_type = TS_DECODER;
+ else
+ ts_type = 0;
+
+ if (otype == DMX_OUT_TS_TAP)
+ ts_type |= TS_PACKET;
+ else if (otype == DMX_OUT_TSDEMUX_TAP)
+ ts_type |= TS_PACKET | TS_DEMUX;
+ else if (otype == DMX_OUT_TAP)
+ ts_type |= TS_PACKET | TS_DEMUX | TS_PAYLOAD_ONLY;
+
+ ret = dmxdev->demux->allocate_ts_feed(dmxdev->demux, &feed->ts,
+ dvb_dmxdev_ts_callback);
+ if (ret < 0)
+ return ret;
+
+ tsfeed = feed->ts;
+ tsfeed->priv = filter;
+
+ ret = tsfeed->set(tsfeed, feed->pid, ts_type, ts_pes, 32768, timeout);
+ if (ret < 0) {
+ dmxdev->demux->release_ts_feed(dmxdev->demux, tsfeed);
+ return ret;
+ }
+
+ ret = tsfeed->start_filtering(tsfeed);
+ if (ret < 0) {
+ dmxdev->demux->release_ts_feed(dmxdev->demux, tsfeed);
+ return ret;
+ }
+
+ return 0;
+}
+
static int dvb_dmxdev_filter_start(struct dmxdev_filter *filter)
{
struct dmxdev *dmxdev = filter->dev;
+ struct dmxdev_feed *feed;
void *mem;
int ret, i;
if (filter->state >= DMXDEV_STATE_GO)
dvb_dmxdev_filter_stop(filter);
- if (!(mem = filter->buffer.data)) {
+ if (!filter->buffer.data) {
mem = vmalloc(filter->buffer.size);
+ if (!mem)
+ return -ENOMEM;
spin_lock_irq(&filter->dev->lock);
- filter->buffer.data=mem;
+ filter->buffer.data = mem;
spin_unlock_irq(&filter->dev->lock);
- if (!filter->buffer.data)
- return -ENOMEM;
}
- filter->buffer.pwrite = filter->buffer.pread = 0;
+ dvb_ringbuffer_flush(&filter->buffer);
switch (filter->type) {
case DMXDEV_TYPE_SEC:
{
- struct dmx_sct_filter_params *para=&filter->params.sec;
- struct dmx_section_filter **secfilter=&filter->filter.sec;
- struct dmx_section_feed **secfeed=&filter->feed.sec;
+ struct dmx_sct_filter_params *para = &filter->params.sec;
+ struct dmx_section_filter **secfilter = &filter->filter.sec;
+ struct dmx_section_feed **secfeed = &filter->feed.sec;
+
+ *secfilter = NULL;
+ *secfeed = NULL;
- *secfilter=NULL;
- *secfeed=NULL;
/* find active filter/feed with same PID */
- for (i=0; i<dmxdev->filternum; i++) {
+ for (i = 0; i < dmxdev->filternum; i++) {
if (dmxdev->filter[i].state >= DMXDEV_STATE_GO &&
- dmxdev->filter[i].pid == para->pid &&
- dmxdev->filter[i].type == DMXDEV_TYPE_SEC) {
+ dmxdev->filter[i].type == DMXDEV_TYPE_SEC &&
+ dmxdev->filter[i].params.sec.pid == para->pid) {
*secfeed = dmxdev->filter[i].feed.sec;
break;
}
/* if no feed found, try to allocate new one */
if (!*secfeed) {
- ret=dmxdev->demux->allocate_section_feed(dmxdev->demux,
- secfeed,
- dvb_dmxdev_section_callback);
- if (ret<0) {
- printk ("DVB (%s): could not alloc feed\n",
- __FUNCTION__);
+ ret = dmxdev->demux->allocate_section_feed(dmxdev->demux,
+ secfeed,
+ dvb_dmxdev_section_callback);
+ if (ret < 0) {
+ printk("DVB (%s): could not alloc feed\n",
+ __func__);
return ret;
}
- ret=(*secfeed)->set(*secfeed, para->pid, 32768, 0,
- (para->flags & DMX_CHECK_CRC) ? 1 : 0);
-
- if (ret<0) {
- printk ("DVB (%s): could not set feed\n",
- __FUNCTION__);
+ ret = (*secfeed)->set(*secfeed, para->pid, 32768,
+ (para->flags & DMX_CHECK_CRC) ? 1 : 0);
+ if (ret < 0) {
+ printk("DVB (%s): could not set feed\n",
+ __func__);
dvb_dmxdev_feed_restart(filter);
return ret;
}
dvb_dmxdev_feed_stop(filter);
}
- ret=(*secfeed)->allocate_filter(*secfeed, secfilter);
-
+ ret = (*secfeed)->allocate_filter(*secfeed, secfilter);
if (ret < 0) {
dvb_dmxdev_feed_restart(filter);
filter->feed.sec->start_filtering(*secfeed);
- dprintk ("could not get filter\n");
+ dprintk("could not get filter\n");
return ret;
}
(*secfilter)->priv = filter;
memcpy(&((*secfilter)->filter_value[3]),
- &(para->filter.filter[1]), DMX_FILTER_SIZE-1);
+ &(para->filter.filter[1]), DMX_FILTER_SIZE - 1);
memcpy(&(*secfilter)->filter_mask[3],
- ¶->filter.mask[1], DMX_FILTER_SIZE-1);
+ ¶->filter.mask[1], DMX_FILTER_SIZE - 1);
memcpy(&(*secfilter)->filter_mode[3],
- ¶->filter.mode[1], DMX_FILTER_SIZE-1);
+ ¶->filter.mode[1], DMX_FILTER_SIZE - 1);
- (*secfilter)->filter_value[0]=para->filter.filter[0];
- (*secfilter)->filter_mask[0]=para->filter.mask[0];
- (*secfilter)->filter_mode[0]=para->filter.mode[0];
- (*secfilter)->filter_mask[1]=0;
- (*secfilter)->filter_mask[2]=0;
+ (*secfilter)->filter_value[0] = para->filter.filter[0];
+ (*secfilter)->filter_mask[0] = para->filter.mask[0];
+ (*secfilter)->filter_mode[0] = para->filter.mode[0];
+ (*secfilter)->filter_mask[1] = 0;
+ (*secfilter)->filter_mask[2] = 0;
filter->todo = 0;
- ret = filter->feed.sec->start_filtering (filter->feed.sec);
-
+ ret = filter->feed.sec->start_filtering(filter->feed.sec);
if (ret < 0)
return ret;
dvb_dmxdev_filter_timer(filter);
break;
}
-
case DMXDEV_TYPE_PES:
- {
- struct timespec timeout = { 0 };
- struct dmx_pes_filter_params *para = &filter->params.pes;
- dmx_output_t otype;
- int ret;
- int ts_type;
- enum dmx_ts_pes ts_pes;
- struct dmx_ts_feed **tsfeed = &filter->feed.ts;
-
- filter->feed.ts = NULL;
- otype=para->output;
-
- ts_pes=(enum dmx_ts_pes) para->pes_type;
-
- if (ts_pes<DMX_PES_OTHER)
- ts_type=TS_DECODER;
- else
- ts_type=0;
-
- if (otype == DMX_OUT_TS_TAP)
- ts_type |= TS_PACKET;
-
- if (otype == DMX_OUT_TAP)
- ts_type |= TS_PAYLOAD_ONLY|TS_PACKET;
-
- ret=dmxdev->demux->allocate_ts_feed(dmxdev->demux,
- tsfeed,
- dvb_dmxdev_ts_callback);
- if (ret<0)
- return ret;
-
- (*tsfeed)->priv = (void *) filter;
-
- ret = (*tsfeed)->set(*tsfeed, para->pid, ts_type, ts_pes,
- 188, 32768, 0, timeout);
-
- if (ret < 0) {
- dmxdev->demux->release_ts_feed(dmxdev->demux, *tsfeed);
- return ret;
- }
-
- ret = filter->feed.ts->start_filtering(filter->feed.ts);
-
- if (ret < 0) {
- dmxdev->demux->release_ts_feed(dmxdev->demux, *tsfeed);
- return ret;
+ list_for_each_entry(feed, &filter->feed.ts, next) {
+ ret = dvb_dmxdev_start_feed(dmxdev, filter, feed);
+ if (ret < 0) {
+ dvb_dmxdev_filter_stop(filter);
+ return ret;
+ }
}
-
break;
- }
default:
return -EINVAL;
}
if (!dmxdev->filter)
return -EINVAL;
- if (down_interruptible(&dmxdev->mutex))
+ if (mutex_lock_interruptible(&dmxdev->mutex))
return -ERESTARTSYS;
- for (i=0; i<dmxdev->filternum; i++)
- if (dmxdev->filter[i].state==DMXDEV_STATE_FREE)
+ for (i = 0; i < dmxdev->filternum; i++)
+ if (dmxdev->filter[i].state == DMXDEV_STATE_FREE)
break;
- if (i==dmxdev->filternum) {
- up(&dmxdev->mutex);
+ if (i == dmxdev->filternum) {
+ mutex_unlock(&dmxdev->mutex);
return -EMFILE;
}
- dmxdevfilter=&dmxdev->filter[i];
- sema_init(&dmxdevfilter->mutex, 1);
- dmxdevfilter->dvbdev=dmxdev->dvbdev;
- file->private_data=dmxdevfilter;
+ dmxdevfilter = &dmxdev->filter[i];
+ mutex_init(&dmxdevfilter->mutex);
+ file->private_data = dmxdevfilter;
- dvb_dmxdev_buffer_init(&dmxdevfilter->buffer);
- dmxdevfilter->type=DMXDEV_TYPE_NONE;
+ dvb_ringbuffer_init(&dmxdevfilter->buffer, NULL, 8192);
+ dmxdevfilter->type = DMXDEV_TYPE_NONE;
dvb_dmxdev_filter_state_set(dmxdevfilter, DMXDEV_STATE_ALLOCATED);
- dmxdevfilter->feed.ts=NULL;
+ INIT_LIST_HEAD(&dmxdevfilter->feed.ts);
init_timer(&dmxdevfilter->timer);
- up(&dmxdev->mutex);
+ dvbdev->users++;
+
+ mutex_unlock(&dmxdev->mutex);
return 0;
}
-
-static int dvb_dmxdev_filter_free(struct dmxdev *dmxdev, struct dmxdev_filter *dmxdevfilter)
+static int dvb_dmxdev_filter_free(struct dmxdev *dmxdev,
+ struct dmxdev_filter *dmxdevfilter)
{
- if (down_interruptible(&dmxdev->mutex))
- return -ERESTARTSYS;
-
- if (down_interruptible(&dmxdevfilter->mutex)) {
- up(&dmxdev->mutex);
- return -ERESTARTSYS;
- }
+ mutex_lock(&dmxdev->mutex);
+ mutex_lock(&dmxdevfilter->mutex);
dvb_dmxdev_filter_stop(dmxdevfilter);
dvb_dmxdev_filter_reset(dmxdevfilter);
if (dmxdevfilter->buffer.data) {
- void *mem=dmxdevfilter->buffer.data;
+ void *mem = dmxdevfilter->buffer.data;
spin_lock_irq(&dmxdev->lock);
- dmxdevfilter->buffer.data=NULL;
+ dmxdevfilter->buffer.data = NULL;
spin_unlock_irq(&dmxdev->lock);
vfree(mem);
}
dvb_dmxdev_filter_state_set(dmxdevfilter, DMXDEV_STATE_FREE);
wake_up(&dmxdevfilter->buffer.queue);
- up(&dmxdevfilter->mutex);
- up(&dmxdev->mutex);
+ mutex_unlock(&dmxdevfilter->mutex);
+ mutex_unlock(&dmxdev->mutex);
return 0;
}
{
int i;
- for (i=0; i<DMX_FILTER_SIZE; i++)
- filter->mode[i]^=0xff;
+ for (i = 0; i < DMX_FILTER_SIZE; i++)
+ filter->mode[i] ^= 0xff;
}
+static int dvb_dmxdev_add_pid(struct dmxdev *dmxdev,
+ struct dmxdev_filter *filter, u16 pid)
+{
+ struct dmxdev_feed *feed;
+
+ if ((filter->type != DMXDEV_TYPE_PES) ||
+ (filter->state < DMXDEV_STATE_SET))
+ return -EINVAL;
+
+ /* only TS packet filters may have multiple PIDs */
+ if ((filter->params.pes.output != DMX_OUT_TSDEMUX_TAP) &&
+ (!list_empty(&filter->feed.ts)))
+ return -EINVAL;
+
+ feed = kzalloc(sizeof(struct dmxdev_feed), GFP_KERNEL);
+ if (feed == NULL)
+ return -ENOMEM;
+
+ feed->pid = pid;
+ list_add(&feed->next, &filter->feed.ts);
+
+ if (filter->state >= DMXDEV_STATE_GO)
+ return dvb_dmxdev_start_feed(dmxdev, filter, feed);
+
+ return 0;
+}
+
+static int dvb_dmxdev_remove_pid(struct dmxdev *dmxdev,
+ struct dmxdev_filter *filter, u16 pid)
+{
+ struct dmxdev_feed *feed, *tmp;
+
+ if ((filter->type != DMXDEV_TYPE_PES) ||
+ (filter->state < DMXDEV_STATE_SET))
+ return -EINVAL;
+
+ list_for_each_entry_safe(feed, tmp, &filter->feed.ts, next) {
+ if ((feed->pid == pid) && (feed->ts != NULL)) {
+ feed->ts->stop_filtering(feed->ts);
+ filter->dev->demux->release_ts_feed(filter->dev->demux,
+ feed->ts);
+ list_del(&feed->next);
+ kfree(feed);
+ }
+ }
+
+ return 0;
+}
static int dvb_dmxdev_filter_set(struct dmxdev *dmxdev,
- struct dmxdev_filter *dmxdevfilter,
- struct dmx_sct_filter_params *params)
+ struct dmxdev_filter *dmxdevfilter,
+ struct dmx_sct_filter_params *params)
{
- dprintk ("function : %s\n", __FUNCTION__);
+ dprintk("function : %s\n", __func__);
dvb_dmxdev_filter_stop(dmxdevfilter);
- dmxdevfilter->type=DMXDEV_TYPE_SEC;
- dmxdevfilter->pid=params->pid;
+ dmxdevfilter->type = DMXDEV_TYPE_SEC;
memcpy(&dmxdevfilter->params.sec,
params, sizeof(struct dmx_sct_filter_params));
invert_mode(&dmxdevfilter->params.sec.filter);
dvb_dmxdev_filter_state_set(dmxdevfilter, DMXDEV_STATE_SET);
- if (params->flags&DMX_IMMEDIATE_START)
+ if (params->flags & DMX_IMMEDIATE_START)
return dvb_dmxdev_filter_start(dmxdevfilter);
return 0;
}
static int dvb_dmxdev_pes_filter_set(struct dmxdev *dmxdev,
- struct dmxdev_filter *dmxdevfilter,
- struct dmx_pes_filter_params *params)
+ struct dmxdev_filter *dmxdevfilter,
+ struct dmx_pes_filter_params *params)
{
+ int ret;
+
dvb_dmxdev_filter_stop(dmxdevfilter);
+ dvb_dmxdev_filter_reset(dmxdevfilter);
- if (params->pes_type>DMX_PES_OTHER || params->pes_type<0)
+ if (params->pes_type > DMX_PES_OTHER || params->pes_type < 0)
return -EINVAL;
- dmxdevfilter->type=DMXDEV_TYPE_PES;
- dmxdevfilter->pid=params->pid;
- memcpy(&dmxdevfilter->params, params, sizeof(struct dmx_pes_filter_params));
+ dmxdevfilter->type = DMXDEV_TYPE_PES;
+ memcpy(&dmxdevfilter->params, params,
+ sizeof(struct dmx_pes_filter_params));
dvb_dmxdev_filter_state_set(dmxdevfilter, DMXDEV_STATE_SET);
- if (params->flags&DMX_IMMEDIATE_START)
+ ret = dvb_dmxdev_add_pid(dmxdev, dmxdevfilter,
+ dmxdevfilter->params.pes.pid);
+ if (ret < 0)
+ return ret;
+
+ if (params->flags & DMX_IMMEDIATE_START)
return dvb_dmxdev_filter_start(dmxdevfilter);
return 0;
}
static ssize_t dvb_dmxdev_read_sec(struct dmxdev_filter *dfil,
- struct file *file, char __user *buf, size_t count, loff_t *ppos)
+ struct file *file, char __user *buf,
+ size_t count, loff_t *ppos)
{
int result, hcount;
- int done=0;
-
- if (dfil->todo<=0) {
- hcount=3+dfil->todo;
- if (hcount>count)
- hcount=count;
- result=dvb_dmxdev_buffer_read(&dfil->buffer, file->f_flags&O_NONBLOCK,
- buf, hcount, ppos);
- if (result<0) {
- dfil->todo=0;
+ int done = 0;
+
+ if (dfil->todo <= 0) {
+ hcount = 3 + dfil->todo;
+ if (hcount > count)
+ hcount = count;
+ result = dvb_dmxdev_buffer_read(&dfil->buffer,
+ file->f_flags & O_NONBLOCK,
+ buf, hcount, ppos);
+ if (result < 0) {
+ dfil->todo = 0;
return result;
}
- if (copy_from_user(dfil->secheader-dfil->todo, buf, result))
+ if (copy_from_user(dfil->secheader - dfil->todo, buf, result))
return -EFAULT;
- buf+=result;
- done=result;
- count-=result;
- dfil->todo-=result;
- if (dfil->todo>-3)
+ buf += result;
+ done = result;
+ count -= result;
+ dfil->todo -= result;
+ if (dfil->todo > -3)
return done;
- dfil->todo=((dfil->secheader[1]<<8)|dfil->secheader[2])&0xfff;
+ dfil->todo = ((dfil->secheader[1] << 8) | dfil->secheader[2]) & 0xfff;
if (!count)
return done;
}
- if (count>dfil->todo)
- count=dfil->todo;
- result=dvb_dmxdev_buffer_read(&dfil->buffer, file->f_flags&O_NONBLOCK,
- buf, count, ppos);
- if (result<0)
+ if (count > dfil->todo)
+ count = dfil->todo;
+ result = dvb_dmxdev_buffer_read(&dfil->buffer,
+ file->f_flags & O_NONBLOCK,
+ buf, count, ppos);
+ if (result < 0)
return result;
- dfil->todo-=result;
- return (result+done);
+ dfil->todo -= result;
+ return (result + done);
}
-
static ssize_t
-dvb_demux_read(struct file *file, char __user *buf, size_t count, loff_t *ppos)
+dvb_demux_read(struct file *file, char __user *buf, size_t count,
+ loff_t *ppos)
{
- struct dmxdev_filter *dmxdevfilter=dvb_dmxdev_file_to_filter(file);
- int ret=0;
+ struct dmxdev_filter *dmxdevfilter = file->private_data;
+ int ret;
- if (down_interruptible(&dmxdevfilter->mutex))
+ if (mutex_lock_interruptible(&dmxdevfilter->mutex))
return -ERESTARTSYS;
- if (dmxdevfilter->type==DMXDEV_TYPE_SEC)
- ret=dvb_dmxdev_read_sec(dmxdevfilter, file, buf, count, ppos);
+ if (dmxdevfilter->type == DMXDEV_TYPE_SEC)
+ ret = dvb_dmxdev_read_sec(dmxdevfilter, file, buf, count, ppos);
else
- ret=dvb_dmxdev_buffer_read(&dmxdevfilter->buffer,
- file->f_flags&O_NONBLOCK,
- buf, count, ppos);
+ ret = dvb_dmxdev_buffer_read(&dmxdevfilter->buffer,
+ file->f_flags & O_NONBLOCK,
+ buf, count, ppos);
- up(&dmxdevfilter->mutex);
+ mutex_unlock(&dmxdevfilter->mutex);
return ret;
}
-
static int dvb_demux_do_ioctl(struct inode *inode, struct file *file,
unsigned int cmd, void *parg)
{
- struct dmxdev_filter *dmxdevfilter=dvb_dmxdev_file_to_filter(file);
- struct dmxdev *dmxdev=dmxdevfilter->dev;
- unsigned long arg=(unsigned long) parg;
- int ret=0;
+ struct dmxdev_filter *dmxdevfilter = file->private_data;
+ struct dmxdev *dmxdev = dmxdevfilter->dev;
+ unsigned long arg = (unsigned long)parg;
+ int ret = 0;
- if (down_interruptible (&dmxdev->mutex))
+ if (mutex_lock_interruptible(&dmxdev->mutex))
return -ERESTARTSYS;
switch (cmd) {
case DMX_START:
- if (down_interruptible(&dmxdevfilter->mutex)) {
- up(&dmxdev->mutex);
+ if (mutex_lock_interruptible(&dmxdevfilter->mutex)) {
+ mutex_unlock(&dmxdev->mutex);
return -ERESTARTSYS;
}
- if (dmxdevfilter->state<DMXDEV_STATE_SET)
+ if (dmxdevfilter->state < DMXDEV_STATE_SET)
ret = -EINVAL;
else
ret = dvb_dmxdev_filter_start(dmxdevfilter);
- up(&dmxdevfilter->mutex);
+ mutex_unlock(&dmxdevfilter->mutex);
break;
case DMX_STOP:
- if (down_interruptible(&dmxdevfilter->mutex)) {
- up(&dmxdev->mutex);
+ if (mutex_lock_interruptible(&dmxdevfilter->mutex)) {
+ mutex_unlock(&dmxdev->mutex);
return -ERESTARTSYS;
}
- ret=dvb_dmxdev_filter_stop(dmxdevfilter);
- up(&dmxdevfilter->mutex);
+ ret = dvb_dmxdev_filter_stop(dmxdevfilter);
+ mutex_unlock(&dmxdevfilter->mutex);
break;
case DMX_SET_FILTER:
- if (down_interruptible(&dmxdevfilter->mutex)) {
- up(&dmxdev->mutex);
+ if (mutex_lock_interruptible(&dmxdevfilter->mutex)) {
+ mutex_unlock(&dmxdev->mutex);
return -ERESTARTSYS;
}
- ret = dvb_dmxdev_filter_set(dmxdev, dmxdevfilter,
- (struct dmx_sct_filter_params *)parg);
- up(&dmxdevfilter->mutex);
+ ret = dvb_dmxdev_filter_set(dmxdev, dmxdevfilter, parg);
+ mutex_unlock(&dmxdevfilter->mutex);
break;
case DMX_SET_PES_FILTER:
- if (down_interruptible(&dmxdevfilter->mutex)) {
- up(&dmxdev->mutex);
+ if (mutex_lock_interruptible(&dmxdevfilter->mutex)) {
+ mutex_unlock(&dmxdev->mutex);
return -ERESTARTSYS;
}
- ret=dvb_dmxdev_pes_filter_set(dmxdev, dmxdevfilter,
- (struct dmx_pes_filter_params *)parg);
- up(&dmxdevfilter->mutex);
+ ret = dvb_dmxdev_pes_filter_set(dmxdev, dmxdevfilter, parg);
+ mutex_unlock(&dmxdevfilter->mutex);
break;
case DMX_SET_BUFFER_SIZE:
- if (down_interruptible(&dmxdevfilter->mutex)) {
- up(&dmxdev->mutex);
+ if (mutex_lock_interruptible(&dmxdevfilter->mutex)) {
+ mutex_unlock(&dmxdev->mutex);
return -ERESTARTSYS;
}
- ret=dvb_dmxdev_set_buffer_size(dmxdevfilter, arg);
- up(&dmxdevfilter->mutex);
- break;
-
- case DMX_GET_EVENT:
+ ret = dvb_dmxdev_set_buffer_size(dmxdevfilter, arg);
+ mutex_unlock(&dmxdevfilter->mutex);
break;
case DMX_GET_PES_PIDS:
if (!dmxdev->demux->get_pes_pids) {
- ret=-EINVAL;
+ ret = -EINVAL;
+ break;
+ }
+ dmxdev->demux->get_pes_pids(dmxdev->demux, parg);
+ break;
+
+ case DMX_GET_CAPS:
+ if (!dmxdev->demux->get_caps) {
+ ret = -EINVAL;
break;
}
- dmxdev->demux->get_pes_pids(dmxdev->demux, (u16 *)parg);
+ ret = dmxdev->demux->get_caps(dmxdev->demux, parg);
+ break;
+
+ case DMX_SET_SOURCE:
+ if (!dmxdev->demux->set_source) {
+ ret = -EINVAL;
+ break;
+ }
+ ret = dmxdev->demux->set_source(dmxdev->demux, parg);
break;
case DMX_GET_STC:
if (!dmxdev->demux->get_stc) {
- ret=-EINVAL;
+ ret = -EINVAL;
break;
}
ret = dmxdev->demux->get_stc(dmxdev->demux,
- ((struct dmx_stc *)parg)->num,
- &((struct dmx_stc *)parg)->stc,
- &((struct dmx_stc *)parg)->base);
+ ((struct dmx_stc *)parg)->num,
+ &((struct dmx_stc *)parg)->stc,
+ &((struct dmx_stc *)parg)->base);
+ break;
+
+ case DMX_ADD_PID:
+ if (mutex_lock_interruptible(&dmxdevfilter->mutex)) {
+ ret = -ERESTARTSYS;
+ break;
+ }
+ ret = dvb_dmxdev_add_pid(dmxdev, dmxdevfilter, *(u16 *)parg);
+ mutex_unlock(&dmxdevfilter->mutex);
+ break;
+
+ case DMX_REMOVE_PID:
+ if (mutex_lock_interruptible(&dmxdevfilter->mutex)) {
+ ret = -ERESTARTSYS;
+ break;
+ }
+ ret = dvb_dmxdev_remove_pid(dmxdev, dmxdevfilter, *(u16 *)parg);
+ mutex_unlock(&dmxdevfilter->mutex);
break;
default:
- ret=-EINVAL;
+ ret = -EINVAL;
+ break;
}
- up(&dmxdev->mutex);
+ mutex_unlock(&dmxdev->mutex);
return ret;
}
return dvb_usercopy(inode, file, cmd, arg, dvb_demux_do_ioctl);
}
-
-static unsigned int dvb_demux_poll (struct file *file, poll_table *wait)
+static unsigned int dvb_demux_poll(struct file *file, poll_table *wait)
{
- struct dmxdev_filter *dmxdevfilter = dvb_dmxdev_file_to_filter(file);
+ struct dmxdev_filter *dmxdevfilter = file->private_data;
unsigned int mask = 0;
if (!dmxdevfilter)
if (dmxdevfilter->buffer.error)
mask |= (POLLIN | POLLRDNORM | POLLPRI | POLLERR);
- if (dmxdevfilter->buffer.pread != dmxdevfilter->buffer.pwrite)
+ if (!dvb_ringbuffer_empty(&dmxdevfilter->buffer))
mask |= (POLLIN | POLLRDNORM | POLLPRI);
return mask;
}
-
static int dvb_demux_release(struct inode *inode, struct file *file)
{
- struct dmxdev_filter *dmxdevfilter = dvb_dmxdev_file_to_filter(file);
+ struct dmxdev_filter *dmxdevfilter = file->private_data;
struct dmxdev *dmxdev = dmxdevfilter->dev;
- return dvb_dmxdev_filter_free(dmxdev, dmxdevfilter);
-}
+ int ret;
+ ret = dvb_dmxdev_filter_free(dmxdev, dmxdevfilter);
-static struct file_operations dvb_demux_fops = {
- .owner = THIS_MODULE,
- .read = dvb_demux_read,
- .ioctl = dvb_demux_ioctl,
- .open = dvb_demux_open,
- .release = dvb_demux_release,
- .poll = dvb_demux_poll,
-};
+ mutex_lock(&dmxdev->mutex);
+ dmxdev->dvbdev->users--;
+ if(dmxdev->dvbdev->users==1 && dmxdev->exit==1) {
+ fops_put(file->f_op);
+ file->f_op = NULL;
+ mutex_unlock(&dmxdev->mutex);
+ wake_up(&dmxdev->dvbdev->wait_queue);
+ } else
+ mutex_unlock(&dmxdev->mutex);
+ return ret;
+}
-static struct dvb_device dvbdev_demux = {
- .priv = NULL,
- .users = 1,
- .writers = 1,
- .fops = &dvb_demux_fops
+static const struct file_operations dvb_demux_fops = {
+ .owner = THIS_MODULE,
+ .read = dvb_demux_read,
+ .ioctl = dvb_demux_ioctl,
+ .open = dvb_demux_open,
+ .release = dvb_demux_release,
+ .poll = dvb_demux_poll,
};
+static struct dvb_device dvbdev_demux = {
+ .priv = NULL,
+ .users = 1,
+ .writers = 1,
+ .fops = &dvb_demux_fops
+};
static int dvb_dvr_do_ioctl(struct inode *inode, struct file *file,
- unsigned int cmd, void *parg)
+ unsigned int cmd, void *parg)
{
struct dvb_device *dvbdev = file->private_data;
struct dmxdev *dmxdev = dvbdev->priv;
+ unsigned long arg = (unsigned long)parg;
+ int ret;
- int ret=0;
-
- if (down_interruptible (&dmxdev->mutex))
+ if (mutex_lock_interruptible(&dmxdev->mutex))
return -ERESTARTSYS;
switch (cmd) {
case DMX_SET_BUFFER_SIZE:
- // FIXME: implement
- ret=0;
+ ret = dvb_dvr_set_buffer_size(dmxdev, arg);
break;
default:
- ret=-EINVAL;
+ ret = -EINVAL;
+ break;
}
- up(&dmxdev->mutex);
+ mutex_unlock(&dmxdev->mutex);
return ret;
}
-
static int dvb_dvr_ioctl(struct inode *inode, struct file *file,
- unsigned int cmd, unsigned long arg)
+ unsigned int cmd, unsigned long arg)
{
return dvb_usercopy(inode, file, cmd, arg, dvb_dvr_do_ioctl);
}
-
-static unsigned int dvb_dvr_poll (struct file *file, poll_table *wait)
+static unsigned int dvb_dvr_poll(struct file *file, poll_table *wait)
{
struct dvb_device *dvbdev = file->private_data;
struct dmxdev *dmxdev = dvbdev->priv;
unsigned int mask = 0;
- dprintk ("function : %s\n", __FUNCTION__);
+ dprintk("function : %s\n", __func__);
poll_wait(file, &dmxdev->dvr_buffer.queue, wait);
- if ((file->f_flags&O_ACCMODE) == O_RDONLY) {
+ if ((file->f_flags & O_ACCMODE) == O_RDONLY) {
if (dmxdev->dvr_buffer.error)
mask |= (POLLIN | POLLRDNORM | POLLPRI | POLLERR);
- if (dmxdev->dvr_buffer.pread!=dmxdev->dvr_buffer.pwrite)
+ if (!dvb_ringbuffer_empty(&dmxdev->dvr_buffer))
mask |= (POLLIN | POLLRDNORM | POLLPRI);
} else
mask |= (POLLOUT | POLLWRNORM | POLLPRI);
return mask;
}
-
-static struct file_operations dvb_dvr_fops = {
- .owner = THIS_MODULE,
- .read = dvb_dvr_read,
- .write = dvb_dvr_write,
- .ioctl = dvb_dvr_ioctl,
- .open = dvb_dvr_open,
- .release = dvb_dvr_release,
- .poll = dvb_dvr_poll,
+static const struct file_operations dvb_dvr_fops = {
+ .owner = THIS_MODULE,
+ .read = dvb_dvr_read,
+ .write = dvb_dvr_write,
+ .ioctl = dvb_dvr_ioctl,
+ .open = dvb_dvr_open,
+ .release = dvb_dvr_release,
+ .poll = dvb_dvr_poll,
};
static struct dvb_device dvbdev_dvr = {
- .priv = NULL,
- .users = 1,
- .writers = 1,
- .fops = &dvb_dvr_fops
+ .priv = NULL,
+ .readers = 1,
+ .users = 1,
+ .fops = &dvb_dvr_fops
};
-int
-dvb_dmxdev_init(struct dmxdev *dmxdev, struct dvb_adapter *dvb_adapter)
+int dvb_dmxdev_init(struct dmxdev *dmxdev, struct dvb_adapter *dvb_adapter)
{
int i;
if (dmxdev->demux->open(dmxdev->demux) < 0)
return -EUSERS;
- dmxdev->filter = vmalloc(dmxdev->filternum*sizeof(struct dmxdev_filter));
+ dmxdev->filter = vmalloc(dmxdev->filternum * sizeof(struct dmxdev_filter));
if (!dmxdev->filter)
return -ENOMEM;
- dmxdev->dvr = vmalloc(dmxdev->filternum*sizeof(struct dmxdev_dvr));
- if (!dmxdev->dvr) {
- vfree(dmxdev->filter);
- dmxdev->filter = NULL;
- return -ENOMEM;
- }
-
- sema_init(&dmxdev->mutex, 1);
+ mutex_init(&dmxdev->mutex);
spin_lock_init(&dmxdev->lock);
- for (i=0; i<dmxdev->filternum; i++) {
- dmxdev->filter[i].dev=dmxdev;
- dmxdev->filter[i].buffer.data=NULL;
- dvb_dmxdev_filter_state_set(&dmxdev->filter[i], DMXDEV_STATE_FREE);
- dmxdev->dvr[i].dev=dmxdev;
- dmxdev->dvr[i].buffer.data=NULL;
- dvb_dmxdev_filter_state_set(&dmxdev->filter[i], DMXDEV_STATE_FREE);
- dvb_dmxdev_dvr_state_set(&dmxdev->dvr[i], DMXDEV_STATE_FREE);
+ for (i = 0; i < dmxdev->filternum; i++) {
+ dmxdev->filter[i].dev = dmxdev;
+ dmxdev->filter[i].buffer.data = NULL;
+ dvb_dmxdev_filter_state_set(&dmxdev->filter[i],
+ DMXDEV_STATE_FREE);
}
- dvb_register_device(dvb_adapter, &dmxdev->dvbdev, &dvbdev_demux, dmxdev, DVB_DEVICE_DEMUX);
- dvb_register_device(dvb_adapter, &dmxdev->dvr_dvbdev, &dvbdev_dvr, dmxdev, DVB_DEVICE_DVR);
+ dvb_register_device(dvb_adapter, &dmxdev->dvbdev, &dvbdev_demux, dmxdev,
+ DVB_DEVICE_DEMUX);
+ dvb_register_device(dvb_adapter, &dmxdev->dvr_dvbdev, &dvbdev_dvr,
+ dmxdev, DVB_DEVICE_DVR);
- dvb_dmxdev_buffer_init(&dmxdev->dvr_buffer);
+ dvb_ringbuffer_init(&dmxdev->dvr_buffer, NULL, 8192);
return 0;
}
+
EXPORT_SYMBOL(dvb_dmxdev_init);
-void
-dvb_dmxdev_release(struct dmxdev *dmxdev)
+void dvb_dmxdev_release(struct dmxdev *dmxdev)
{
+ dmxdev->exit=1;
+ if (dmxdev->dvbdev->users > 1) {
+ wait_event(dmxdev->dvbdev->wait_queue,
+ dmxdev->dvbdev->users==1);
+ }
+ if (dmxdev->dvr_dvbdev->users > 1) {
+ wait_event(dmxdev->dvr_dvbdev->wait_queue,
+ dmxdev->dvr_dvbdev->users==1);
+ }
+
dvb_unregister_device(dmxdev->dvbdev);
dvb_unregister_device(dmxdev->dvr_dvbdev);
vfree(dmxdev->filter);
- dmxdev->filter=NULL;
- vfree(dmxdev->dvr);
- dmxdev->dvr=NULL;
+ dmxdev->filter = NULL;
dmxdev->demux->close(dmxdev->demux);
}
+
EXPORT_SYMBOL(dvb_dmxdev_release);
git://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff