static int dvb_dmxdev_filter_free(struct dmxdev *dmxdev,
struct dmxdev_filter *dmxdevfilter)
{
if (mutex_lock_interruptible(&dmxdev->mutex))
return -ERESTARTSYS;
if (mutex_lock_interruptible(&dmxdevfilter->mutex)) {
mutex_unlock(&dmxdev->mutex);
return -ERESTARTSYS;
}
dvb_dmxdev_filter_stop(dmxdevfilter);
dvb_dmxdev_filter_reset(dmxdevfilter);
if (dmxdevfilter->buffer.data) {
void *mem = dmxdevfilter->buffer.data;
spin_lock_irq(&dmxdev->lock);
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);
mutex_unlock(&dmxdevfilter->mutex);
mutex_unlock(&dmxdev->mutex);
return 0;
}
static int dvb_dmxdev_filter_set(struct dmxdev *dmxdev,
struct dmxdev_filter *dmxdevfilter,
struct dmx_sct_filter_params *params)
{
dprintk("function : %s\n", __func__);
dvb_dmxdev_filter_stop(dmxdevfilter);
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)
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)
{
dvb_dmxdev_filter_stop(dmxdevfilter);
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));
dvb_dmxdev_filter_state_set(dmxdevfilter, DMXDEV_STATE_SET);
if (params->flags & DMX_IMMEDIATE_START)
return dvb_dmxdev_filter_start(dmxdevfilter);
return 0;
}
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;
if (mutex_lock_interruptible(&dmxdev->mutex))
return -ERESTARTSYS;
switch (cmd) {
case DMX_START:
if (mutex_lock_interruptible(&dmxdevfilter->mutex)) {
mutex_unlock(&dmxdev->mutex);
return -ERESTARTSYS;
}
if (dmxdevfilter->state < DMXDEV_STATE_SET)
ret = -EINVAL;
else
ret = dvb_dmxdev_filter_start(dmxdevfilter);
mutex_unlock(&dmxdevfilter->mutex);
break;
case DMX_STOP:
if (mutex_lock_interruptible(&dmxdevfilter->mutex)) {
mutex_unlock(&dmxdev->mutex);
return -ERESTARTSYS;
}
ret = dvb_dmxdev_filter_stop(dmxdevfilter);
mutex_unlock(&dmxdevfilter->mutex);
break;
case DMX_SET_FILTER:
if (mutex_lock_interruptible(&dmxdevfilter->mutex)) {
mutex_unlock(&dmxdev->mutex);
return -ERESTARTSYS;
}
ret = dvb_dmxdev_filter_set(dmxdev, dmxdevfilter, parg);
mutex_unlock(&dmxdevfilter->mutex);
break;
case DMX_SET_PES_FILTER:
if (mutex_lock_interruptible(&dmxdevfilter->mutex)) {
mutex_unlock(&dmxdev->mutex);
return -ERESTARTSYS;
}
ret = dvb_dmxdev_pes_filter_set(dmxdev, dmxdevfilter, parg);
mutex_unlock(&dmxdevfilter->mutex);
break;
case DMX_SET_BUFFER_SIZE:
if (mutex_lock_interruptible(&dmxdevfilter->mutex)) {
mutex_unlock(&dmxdev->mutex);
return -ERESTARTSYS;
}
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;
break;
}
dmxdev->demux->get_pes_pids(dmxdev->demux, parg);
break;
case DMX_GET_CAPS:
if (!dmxdev->demux->get_caps) {
ret = -EINVAL;
break;
}
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;
break;
}
ret = dmxdev->demux->get_stc(dmxdev->demux,
((struct dmx_stc *)parg)->num,
&((struct dmx_stc *)parg)->stc,
&((struct dmx_stc *)parg)->base);
break;
default:
ret = -EINVAL;
break;
}
mutex_unlock(&dmxdev->mutex);
return ret;
}
static int dvb_dmxdev_filter_start(struct dmxdev_filter *filter)
{
struct dmxdev *dmxdev = filter->dev;
void *mem;
int ret, i;
if (filter->state < DMXDEV_STATE_SET)
return -EINVAL;
if (filter->state >= DMXDEV_STATE_GO)
dvb_dmxdev_filter_stop(filter);
if (!filter->buffer.data) {
mem = vmalloc(filter->buffer.size);
if (!mem)
return -ENOMEM;
spin_lock_irq(&filter->dev->lock);
filter->buffer.data = mem;
spin_unlock_irq(&filter->dev->lock);
}
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;
*secfilter = NULL;
*secfeed = NULL;
/* find active filter/feed with same 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 == 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",
__func__);
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",
__func__);
dvb_dmxdev_feed_restart(filter);
return ret;
}
} else {
dvb_dmxdev_feed_stop(filter);
}
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");
return ret;
}
(*secfilter)->priv = filter;
memcpy(&((*secfilter)->filter_value[3]),
&(para->filter.filter[1]), DMX_FILTER_SIZE - 1);
memcpy(&(*secfilter)->filter_mask[3],
¶->filter.mask[1], DMX_FILTER_SIZE - 1);
memcpy(&(*secfilter)->filter_mode[3],
¶->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;
filter->todo = 0;
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;
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,
tsfeed,
dvb_dmxdev_ts_callback);
if (ret < 0)
return ret;
(*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);
return ret;
}
ret = filter->feed.ts->start_filtering(filter->feed.ts);
if (ret < 0) {
dmxdev->demux->release_ts_feed(dmxdev->demux,
*tsfeed);
return ret;
}
break;
}
default:
return -EINVAL;
}
dvb_dmxdev_filter_state_set(filter, DMXDEV_STATE_GO);
return 0;
}
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;
if (down_interruptible (&dmxdev->mutex))
return -ERESTARTSYS;
switch (cmd) {
case DMX_START:
if (down_interruptible(&dmxdevfilter->mutex)) {
up(&dmxdev->mutex);
return -ERESTARTSYS;
}
if (dmxdevfilter->state<DMXDEV_STATE_SET)
ret = -EINVAL;
else
ret = dvb_dmxdev_filter_start(dmxdevfilter);
up(&dmxdevfilter->mutex);
break;
case DMX_STOP:
if (down_interruptible(&dmxdevfilter->mutex)) {
up(&dmxdev->mutex);
return -ERESTARTSYS;
}
ret=dvb_dmxdev_filter_stop(dmxdevfilter);
up(&dmxdevfilter->mutex);
break;
case DMX_SET_FILTER:
if (down_interruptible(&dmxdevfilter->mutex)) {
up(&dmxdev->mutex);
return -ERESTARTSYS;
}
ret = dvb_dmxdev_filter_set(dmxdev, dmxdevfilter,
(struct dmx_sct_filter_params *)parg);
up(&dmxdevfilter->mutex);
break;
case DMX_SET_PES_FILTER:
if (down_interruptible(&dmxdevfilter->mutex)) {
up(&dmxdev->mutex);
return -ERESTARTSYS;
}
ret=dvb_dmxdev_pes_filter_set(dmxdev, dmxdevfilter,
(struct dmx_pes_filter_params *)parg);
up(&dmxdevfilter->mutex);
break;
case DMX_SET_BUFFER_SIZE:
if (down_interruptible(&dmxdevfilter->mutex)) {
up(&dmxdev->mutex);
return -ERESTARTSYS;
}
ret=dvb_dmxdev_set_buffer_size(dmxdevfilter, arg);
up(&dmxdevfilter->mutex);
break;
case DMX_GET_EVENT:
break;
case DMX_GET_PES_PIDS:
if (!dmxdev->demux->get_pes_pids) {
ret=-EINVAL;
break;
}
dmxdev->demux->get_pes_pids(dmxdev->demux, (u16 *)parg);
break;
case DMX_GET_STC:
if (!dmxdev->demux->get_stc) {
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);
break;
default:
ret=-EINVAL;
}
up(&dmxdev->mutex);
return ret;
}
