SYNOPSIS

struct dmx_section_feed {
int is_filtering;
struct dmx_demux * parent;
void * priv;
int check_crc;
int (* set) (struct dmx_section_feed *feed,u16 pid,size_t circular_buffer_size,int check_crc);
int (* allocate_filter) (struct dmx_section_feed *feed,struct dmx_section_filter **filter);
int (* release_filter) (struct dmx_section_feed *feed,struct dmx_section_filter *filter);
int (* start_filtering) (struct dmx_section_feed *feed);
int (* stop_filtering) (struct dmx_section_feed *feed);
};

MEMBERS

is_filtering

Set to non-zero when filtering in progress

parent

pointer to struct dmx_demux

priv

pointer to private data of the API client

check_crc

If non-zero, check the CRC values of filtered sections.

set

sets the section filter

allocate_filter

This function is used to allocate a section filter on the demux. It should only be called when no filtering is in progress on this section feed. If a filter cannot be allocated, the function fails with -ENOSPC.

release_filter

This function releases all the resources of a previously allocated section filter. The function should not be called while filtering is in progress on this section feed. After calling this function, the caller should not try to dereference the filter pointer.

start_filtering

starts section filtering

stop_filtering

stops section filtering

DESCRIPTION

A TS feed is typically mapped to a hardware PID filter on the demux chip. Using this API, the client can set the filtering properties to start/stop filtering TS packets on a particular TS feed.

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