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V4L/DVB (7329): add flag to allow software demux to recognize the output type 

Previously, the macro DVR_FEED, which is used to recognize and filter
out duplicate packets going to the DVR device, used the TS_PAYLOAD_ONLY
flag to identify a packet's destination.

This kind of filtering was introduced by the following two changesets:

Now, that it is possible to record TS PIDs using the demux device by
setting the output type to DMX_OUT_TSDEMUX_TAP, checking TS_PAYLOAD_ONLY
is not sufficient anymore. Therefore another flag, TS_DEMUX, is added to
specify the output type of a feed.

This allows multiple clients to filter the same TS PID on a demux device
simultaneously.

Signed-off-by: Andreas Oberritter <obi@linuxtv.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
This commit is contained in:
Andreas Oberritter 2008-04-22 14:45:47 -03:00 committed by Mauro Carvalho Chehab
parent a9317abfba
commit 4a24ce3a17
3 changed files with 8 additions and 5 deletions
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2
drivers/media/dvb/dvb-core/demux.h
View File

@ -80,6 +80,8 @@ enum dmx_success {
#define TS_PAYLOAD_ONLY 2 /* in case TS_PACKET is set, only send the TS
payload (<=184 bytes per packet) to callback */
#define TS_DECODER 4 /* send stream to built-in decoder (if present) */
#define TS_DEMUX 8 /* in case TS_PACKET is set, send the TS to
the demux device, not to the dvr device */
/* PES type for filters which write to built-in decoder */
/* these should be kept identical to the types in dmx.h */

9
drivers/media/dvb/dvb-core/dmxdev.c
View File

@ -619,11 +619,12 @@ static int dvb_dmxdev_filter_start(struct dmxdev_filter *filter)
else
ts_type = 0;
if (otype == DMX_OUT_TS_TAP || otype == DMX_OUT_TSDEMUX_TAP)
if (otype == DMX_OUT_TS_TAP)
ts_type |= TS_PACKET;
if (otype == DMX_OUT_TAP)
ts_type |= TS_PAYLOAD_ONLY | 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,

2
drivers/media/dvb/dvb-core/dvb_demux.c
View File

@ -368,7 +368,7 @@ static inline void dvb_dmx_swfilter_packet_type(struct dvb_demux_feed *feed,
#define DVR_FEED(f) \
(((f)->type == DMX_TYPE_TS) && \
((f)->feed.ts.is_filtering) && \
(((f)->ts_type & (TS_PACKET|TS_PAYLOAD_ONLY)) == TS_PACKET))
(((f)->ts_type & (TS_PACKET | TS_DEMUX)) == TS_PACKET))
static void dvb_dmx_swfilter_packet(struct dvb_demux *demux, const u8 *buf)
{