diff options
Diffstat (limited to 'drivers/media')
| -rw-r--r-- | drivers/media/dvb/dvb-core/dmxdev.c | 650 |
1 files changed, 321 insertions, 329 deletions
diff --git a/drivers/media/dvb/dvb-core/dmxdev.c b/drivers/media/dvb/dvb-core/dmxdev.c index 5cd2f98290a..f6932d6c62e 100644 --- a/drivers/media/dvb/dvb-core/dmxdev.c +++ b/drivers/media/dvb/dvb-core/dmxdev.c @@ -1,9 +1,8 @@ /* * 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 @@ -32,7 +31,6 @@ #include <linux/wait.h> #include <asm/uaccess.h> #include <asm/system.h> - #include "dmxdev.h" static int debug; @@ -44,15 +42,16 @@ MODULE_PARM_DESC(debug, "Turn on/off debugging (default:off)."); 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; + 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 inline int dvb_dmxdev_buffer_write(struct dmxdev_buffer *buf, + const u8 *src, int len) { int split; int free; @@ -63,98 +62,99 @@ static inline int dvb_dmxdev_buffer_write(struct dmxdev_buffer *buf, const u8 *s if (!buf->data) return 0; - free=buf->pread-buf->pwrite; - split=0; - if (free<=0) { - free+=buf->size; - split=buf->size-buf->pwrite; + free = buf->pread - buf->pwrite; + split = 0; + if (free <= 0) { + free += buf->size; + split = buf->size - buf->pwrite; } - if (len>=free) { + if (len >= free) { dprintk("dmxdev: buffer overflow\n"); return -1; } - if (split>=len) - split=0; - todo=len; + if (split >= len) + split = 0; + todo = len; if (split) { memcpy(buf->data + buf->pwrite, src, split); - todo-=split; - buf->pwrite=0; + todo -= split; + buf->pwrite = 0; } - memcpy(buf->data + buf->pwrite, src+split, todo); - buf->pwrite=(buf->pwrite+todo)%buf->size; + memcpy(buf->data + buf->pwrite, src + split, todo); + buf->pwrite = (buf->pwrite + todo) % buf->size; return len; } static ssize_t dvb_dmxdev_buffer_read(struct dmxdev_buffer *src, - int non_blocking, char __user *buf, size_t count, loff_t *ppos) + int non_blocking, char __user *buf, + size_t count, loff_t *ppos) { - unsigned long todo=count; + unsigned long todo = count; int split, avail, error; if (!src->data) return 0; - if ((error=src->error)) { - src->pwrite=src->pread; - src->error=0; + if ((error = src->error)) { + src->pwrite = src->pread; + src->error = 0; return error; } - if (non_blocking && (src->pwrite==src->pread)) + 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; + while (todo > 0) { + if (non_blocking && (src->pwrite == src->pread)) + return (count - todo) ? (count - todo) : -EWOULDBLOCK; if (wait_event_interruptible(src->queue, - (src->pread!=src->pwrite) || - (src->error))<0) - return count-todo; + (src->pread != src->pwrite) || + (src->error)) < 0) + return count - todo; - if ((error=src->error)) { - src->pwrite=src->pread; - src->error=0; + if ((error = src->error)) { + src->pwrite = src->pread; + src->error = 0; return error; } - split=src->size; - avail=src->pwrite - src->pread; - if (avail<0) { - avail+=src->size; - split=src->size - src->pread; + 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 > 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)) + if (copy_to_user(buf, src->data + src->pread, avail)) return -EFAULT; src->pread = (src->pread + avail) % src->size; - todo-=avail; - buf+=avail; + todo -= avail; + buf += avail; } } return count; } -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; @@ -166,37 +166,37 @@ static int dvb_dvr_open(struct inode *inode, struct file *file) struct dmxdev *dmxdev = dvbdev->priv; struct dmx_frontend *front; - dprintk ("function : %s\n", __FUNCTION__); + dprintk("function : %s\n", __FUNCTION__); if (mutex_lock_interruptible(&dmxdev->mutex)) return -ERESTARTSYS; - if ((file->f_flags&O_ACCMODE)==O_RDWR) { - if (!(dmxdev->capabilities&DMXDEV_CAP_DUPLEX)) { + 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) { - mutex_unlock(&dmxdev->mutex); - return -ENOMEM; - } + 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) { + mutex_unlock(&dmxdev->mutex); + return -ENOMEM; + } } - 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) { mutex_unlock(&dmxdev->mutex); return -EOPNOTSUPP; } - front=get_fe(dmxdev->demux, DMX_MEMORY_FE); + front = get_fe(dmxdev->demux, DMX_MEMORY_FE); if (!front) { mutex_unlock(&dmxdev->mutex); @@ -217,17 +217,17 @@ static int dvb_dvr_release(struct inode *inode, struct file *file) if (mutex_lock_interruptible(&dmxdev->mutex)) return -ERESTARTSYS; - 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) { 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); } @@ -237,7 +237,7 @@ static int dvb_dvr_release(struct inode *inode, struct file *file) } 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; @@ -245,60 +245,62 @@ static ssize_t dvb_dvr_write(struct file *file, const char __user *buf, 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 (mutex_lock_interruptible(&dmxdev->mutex)) return -ERESTARTSYS; - ret=dmxdev->demux->write(dmxdev->demux, buf, count); + 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; //mutex_lock(&dmxdev->mutex); - ret= dvb_dmxdev_buffer_read(&dmxdev->dvr_buffer, - file->f_flags&O_NONBLOCK, - buf, count, ppos); + ret = dvb_dmxdev_buffer_read(&dmxdev->dvr_buffer, + file->f_flags & O_NONBLOCK, + buf, count, ppos); //mutex_unlock(&dmxdev->mutex); return ret; } -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; + struct dmxdev_buffer *buf = &dmxdevfilter->buffer; void *mem; - if (buf->size==size) + if (buf->size == size) return 0; - if (dmxdevfilter->state>=DMXDEV_STATE_GO) + if (dmxdevfilter->state >= DMXDEV_STATE_GO) return -EBUSY; spin_lock_irq(&dmxdevfilter->dev->lock); - mem=buf->data; - buf->data=NULL; - buf->size=size; - buf->pwrite=buf->pread=0; + mem = buf->data; + buf->data = NULL; + buf->size = size; + buf->pwrite = buf->pread = 0; spin_unlock_irq(&dmxdevfilter->dev->lock); vfree(mem); if (buf->size) { - mem=vmalloc(dmxdevfilter->buffer.size); + mem = vmalloc(dmxdevfilter->buffer.size); if (!mem) return -ENOMEM; spin_lock_irq(&dmxdevfilter->dev->lock); - buf->data=mem; + buf->data = mem; spin_unlock_irq(&dmxdevfilter->dev->lock); } return 0; @@ -306,31 +308,33 @@ static int dvb_dmxdev_set_buffer_size(struct dmxdev_filter *dmxdevfilter, unsign 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; @@ -340,68 +344,68 @@ static int dvb_dmxdev_section_callback(const u8 *buffer1, size_t buffer1_len, 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) { + dmxdevfilter->buffer.pwrite = dmxdevfilter->buffer.pread; + dmxdevfilter->buffer.error = -EOVERFLOW; } - 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; 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) + 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) { + buffer->pwrite = buffer->pread; + buffer->error = -EOVERFLOW; } 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) { dvb_dmxdev_filter_state_set(dmxdevfilter, DMXDEV_STATE_SET); @@ -420,20 +424,16 @@ static int dvb_dmxdev_feed_stop(struct dmxdev_filter *dmxdevfilter) 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); + 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); - break; default: return -EINVAL; } @@ -441,32 +441,31 @@ static int dvb_dmxdev_feed_start(struct dmxdev_filter *filter) 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].params.sec.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) + if (dmxdevfilter->state < DMXDEV_STATE_GO) return 0; switch (dmxdevfilter->type) { @@ -476,35 +475,35 @@ static int dvb_dmxdev_filter_stop(struct dmxdev_filter *dmxdevfilter) 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; + release_ts_feed(dmxdevfilter->dev->demux, + dmxdevfilter->feed.ts); + dmxdevfilter->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; + dmxdevfilter->buffer.pwrite = dmxdevfilter->buffer.pread = 0; return 0; } 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->type = DMXDEV_TYPE_NONE; dvb_dmxdev_filter_state_set(dmxdevfilter, DMXDEV_STATE_ALLOCATED); return 0; } @@ -524,7 +523,7 @@ static int dvb_dmxdev_filter_start(struct dmxdev_filter *filter) if (!(mem = filter->buffer.data)) { mem = vmalloc(filter->buffer.size); 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; @@ -535,15 +534,16 @@ static int dvb_dmxdev_filter_start(struct dmxdev_filter *filter) 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].type == DMXDEV_TYPE_SEC && dmxdev->filter[i].params.sec.pid == para->pid) { @@ -554,21 +554,20 @@ static int dvb_dmxdev_filter_start(struct dmxdev_filter *filter) /* 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", + __FUNCTION__); return ret; } - 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", - __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", + __FUNCTION__); dvb_dmxdev_feed_restart(filter); return ret; } @@ -576,41 +575,38 @@ static int dvb_dmxdev_filter_start(struct dmxdev_filter *filter) 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 }; @@ -622,41 +618,41 @@ static int dvb_dmxdev_filter_start(struct dmxdev_filter *filter) struct dmx_ts_feed **tsfeed = &filter->feed.ts; filter->feed.ts = NULL; - otype=para->output; + otype = para->output; - ts_pes=(enum dmx_ts_pes) para->pes_type; + ts_pes = (enum dmx_ts_pes)para->pes_type; - if (ts_pes<DMX_PES_OTHER) - ts_type=TS_DECODER; + if (ts_pes < DMX_PES_OTHER) + ts_type = TS_DECODER; else - ts_type=0; + 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; + ts_type |= TS_PAYLOAD_ONLY | TS_PACKET; - ret=dmxdev->demux->allocate_ts_feed(dmxdev->demux, - tsfeed, - dvb_dmxdev_ts_callback); - if (ret<0) + ret = dmxdev->demux->allocate_ts_feed(dmxdev->demux, + tsfeed, + dvb_dmxdev_ts_callback); + if (ret < 0) return ret; - (*tsfeed)->priv = (void *) filter; + (*tsfeed)->priv = filter; ret = (*tsfeed)->set(*tsfeed, para->pid, ts_type, ts_pes, 32768, timeout); - if (ret < 0) { - dmxdev->demux->release_ts_feed(dmxdev->demux, *tsfeed); + 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); + dmxdev->demux->release_ts_feed(dmxdev->demux, + *tsfeed); return ret; } @@ -683,31 +679,31 @@ static int dvb_demux_open(struct inode *inode, struct file *file) 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) { + if (i == dmxdev->filternum) { mutex_unlock(&dmxdev->mutex); return -EMFILE; } - dmxdevfilter=&dmxdev->filter[i]; + dmxdevfilter = &dmxdev->filter[i]; mutex_init(&dmxdevfilter->mutex); - file->private_data=dmxdevfilter; + file->private_data = dmxdevfilter; dvb_dmxdev_buffer_init(&dmxdevfilter->buffer); - dmxdevfilter->type=DMXDEV_TYPE_NONE; + dmxdevfilter->type = DMXDEV_TYPE_NONE; dvb_dmxdev_filter_state_set(dmxdevfilter, DMXDEV_STATE_ALLOCATED); - dmxdevfilter->feed.ts=NULL; + dmxdevfilter->feed.ts = NULL; init_timer(&dmxdevfilter->timer); 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 (mutex_lock_interruptible(&dmxdev->mutex)) return -ERESTARTSYS; @@ -721,10 +717,10 @@ static int dvb_dmxdev_filter_free(struct dmxdev *dmxdev, struct dmxdev_filter *d 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); } @@ -740,118 +736,120 @@ static inline void invert_mode(dmx_filter_t *filter) { 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_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", __FUNCTION__); dvb_dmxdev_filter_stop(dmxdevfilter); - dmxdevfilter->type=DMXDEV_TYPE_SEC; + 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) { dvb_dmxdev_filter_stop(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; - 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) + 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= file->private_data; - int ret=0; + struct dmxdev_filter *dmxdevfilter = file->private_data; + int ret; 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); 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 = file->private_data; - struct dmxdev *dmxdev=dmxdevfilter->dev; - unsigned long arg=(unsigned long) parg; - int ret=0; + struct dmxdev *dmxdev = dmxdevfilter->dev; + unsigned long arg = (unsigned long)parg; + int ret = 0; if (mutex_lock_interruptible(&dmxdev->mutex)) return -ERESTARTSYS; @@ -862,7 +860,7 @@ static int dvb_demux_do_ioctl(struct inode *inode, struct file *file, 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); @@ -874,7 +872,7 @@ static int dvb_demux_do_ioctl(struct inode *inode, struct file *file, mutex_unlock(&dmxdev->mutex); return -ERESTARTSYS; } - ret=dvb_dmxdev_filter_stop(dmxdevfilter); + ret = dvb_dmxdev_filter_stop(dmxdevfilter); mutex_unlock(&dmxdevfilter->mutex); break; @@ -883,8 +881,7 @@ static int dvb_demux_do_ioctl(struct inode *inode, struct file *file, mutex_unlock(&dmxdev->mutex); return -ERESTARTSYS; } - ret = dvb_dmxdev_filter_set(dmxdev, dmxdevfilter, - (struct dmx_sct_filter_params *)parg); + ret = dvb_dmxdev_filter_set(dmxdev, dmxdevfilter, parg); mutex_unlock(&dmxdevfilter->mutex); break; @@ -893,8 +890,7 @@ static int dvb_demux_do_ioctl(struct inode *inode, struct file *file, mutex_unlock(&dmxdev->mutex); return -ERESTARTSYS; } - ret=dvb_dmxdev_pes_filter_set(dmxdev, dmxdevfilter, - (struct dmx_pes_filter_params *)parg); + ret = dvb_dmxdev_pes_filter_set(dmxdev, dmxdevfilter, parg); mutex_unlock(&dmxdevfilter->mutex); break; @@ -903,7 +899,7 @@ static int dvb_demux_do_ioctl(struct inode *inode, struct file *file, mutex_unlock(&dmxdev->mutex); return -ERESTARTSYS; } - ret=dvb_dmxdev_set_buffer_size(dmxdevfilter, arg); + ret = dvb_dmxdev_set_buffer_size(dmxdevfilter, arg); mutex_unlock(&dmxdevfilter->mutex); break; @@ -912,10 +908,10 @@ static int dvb_demux_do_ioctl(struct inode *inode, struct file *file, case DMX_GET_PES_PIDS: if (!dmxdev->demux->get_pes_pids) { - ret=-EINVAL; + ret = -EINVAL; break; } - dmxdev->demux->get_pes_pids(dmxdev->demux, (u16 *)parg); + dmxdev->demux->get_pes_pids(dmxdev->demux, parg); break; case DMX_GET_CAPS: @@ -936,17 +932,18 @@ static int dvb_demux_do_ioctl(struct inode *inode, struct file *file, 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; default: - ret=-EINVAL; + ret = -EINVAL; + break; } mutex_unlock(&dmxdev->mutex); return ret; @@ -958,8 +955,7 @@ static int dvb_demux_ioctl(struct inode *inode, struct file *file, 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 = file->private_data; unsigned int mask = 0; @@ -983,7 +979,6 @@ static unsigned int dvb_demux_poll (struct file *file, poll_table *wait) return mask; } - static int dvb_demux_release(struct inode *inode, struct file *file) { struct dmxdev_filter *dmxdevfilter = file->private_data; @@ -992,32 +987,28 @@ static int dvb_demux_release(struct inode *inode, struct file *file) return 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, + .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 + .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; - - int ret=0; + int ret; if (mutex_lock_interruptible(&dmxdev->mutex)) return -ERESTARTSYS; @@ -1025,39 +1016,38 @@ static int dvb_dvr_do_ioctl(struct inode *inode, struct file *file, switch (cmd) { case DMX_SET_BUFFER_SIZE: // FIXME: implement - ret=0; + ret = 0; break; default: - ret=-EINVAL; + ret = -EINVAL; + break; } 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", __FUNCTION__); 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 (dmxdev->dvr_buffer.pread != dmxdev->dvr_buffer.pwrite) mask |= (POLLIN | POLLRDNORM | POLLPRI); } else mask |= (POLLOUT | POLLWRNORM | POLLPRI); @@ -1065,61 +1055,63 @@ static unsigned int dvb_dvr_poll (struct file *file, poll_table *wait) 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, + .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, + .users = 1, + .writers = 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; 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); + 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); return 0; } + EXPORT_SYMBOL(dvb_dmxdev_init); -void -dvb_dmxdev_release(struct dmxdev *dmxdev) +void dvb_dmxdev_release(struct dmxdev *dmxdev) { dvb_unregister_device(dmxdev->dvbdev); dvb_unregister_device(dmxdev->dvr_dvbdev); vfree(dmxdev->filter); - dmxdev->filter=NULL; + dmxdev->filter = NULL; dmxdev->demux->close(dmxdev->demux); } + EXPORT_SYMBOL(dvb_dmxdev_release); |