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media: dvb_demux: document dvb_demux_filter and dvb_demux_feed

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Document those two structs using kernel-doc markups.

Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
This commit is contained in:
Mauro Carvalho Chehab 2017-09-19 19:04:08 -04:00
parent 4bc8525a34
commit e5c4be821a
1 changed files with 48 additions and 2 deletions
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50
drivers/media/dvb-core/dvb_demux.h
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@ -60,6 +60,21 @@ enum dvb_dmx_state {
#define SPEED_PKTS_INTERVAL 50000
/**
* struct dvb_demux_filter - Describes a DVB demux section filter.
*
* @filter: Section filter as defined by &struct dmx_section_filter.
* @maskandmode: logical ``and`` bit mask.
* @maskandnotmode: logical ``and not`` bit mask.
* @doneq: flag that indicates when a filter is ready.
* @next: pointer to the next section filter.
* @feed: &struct dvb_demux_feed pointer.
* @index: index of the used demux filter.
* @state: state of the filter as described by &enum dvb_dmx_state.
* @type: type of the filter as described
* by &enum dvb_dmx_filter_type.
*/
struct dvb_demux_filter {
struct dmx_section_filter filter;
u8 maskandmode[DMX_MAX_FILTER_SIZE];
@ -72,9 +87,40 @@ struct dvb_demux_filter {
enum dvb_dmx_state state;
enum dvb_dmx_filter_type type;
/* private: used only by av7110 */
u16 hw_handle;
};
/**
* struct dvb_demux_feed - describes a DVB field
*
* @feed: a digital TV feed. It can either be a TS or a section feed:
* - if the feed is TS, it contains &struct dvb_ts_feed;
* - if the feed is section, it contains
* &struct dmx_section_feed.
* @cb: digital TV callbacks. depending on the feed type, it can be:
* - if the feed is TS, it contains a dmx_ts_cb() callback;
* - if the feed is section, it contains a dmx_section_cb()
* callback.
*
* @demux: pointer to &struct dvb_demux.
* @priv: private data for the filter handling routine.
* @type: type of the filter, as defined by &enum dvb_dmx_filter_type.
* @state: state of the filter as defined by &enum dvb_dmx_state.
* @pid: PID to be filtered.
* @timeout: feed timeout.
* @filter: pointer to &struct dvb_demux_filter.
* @ts_type: type of TS, as defined by &enum ts_filter_type.
* @pes_type: type of PES, as defined by &enum dmx_ts_pes.
* @cc: MPEG-TS packet continuity counter
* @pusi_seen: if true, indicates that a discontinuity was detected.
* it is used to prevent feeding of garbage from previous section.
* @peslen: length of the PES (Packet Elementary Stream).
* @list_head: head for the list of digital TV demux feeds.
* @index: a unique index for each feed. Can be used as hardware
* pid filter index.
*
*/
struct dvb_demux_feed {
union {
struct dmx_ts_feed ts;
@ -99,12 +145,12 @@ struct dvb_demux_feed {
enum dmx_ts_pes pes_type;
int cc;
bool pusi_seen; /* prevents feeding of garbage from previous section */
bool pusi_seen;
u16 peslen;
struct list_head list_head;
unsigned int index; /* a unique index for each feed (can be used as hardware pid filter index) */
unsigned int index;
};
struct dvb_demux {