android_kernel_xiaomi_sm8350/include
Peter Hartley b01cd93789 V4L/DVB (7293): DMX_OUT_TSDEMUX_TAP: record two streams from same mux, resend
Currently (in linux-2.6.24, but linux-dvb hg looks similar), the
dmx_output_t in the dmx_pes_filter_params decides two things: whether
output is sent to demux0 or dvr0 (in dmxdev.c:dvb_dmxdev_ts_callback),
*and* whether to depacketise TS (in dmxdev.c:dvb_dmxdev_filter_start).
As it stands, those two things can't be set independently: output
destined for demux0 is depacketised, output for dvr0 isn't.

This is what you want for capturing multiple audio streams from the same
multiplex simultaneously: open demux0 several times and send
depacketised output there. And capturing a single video stream is fine
not what you want: you want multi-open (so demux0, not dvr0), but you
want the TS nature preserved (because that's what you want on output, as
you're going to re-multiplex it with the audio).

At least one existing solution -- GStreamer -- sends all its streams
simultaneously via dvr0 and demuxes again in userland, but it seems a
bit of a shame to pick out all the PIDs in kernel, stick them back
together in kernel, and send them to userland only to get unpicked
again, when the alternative is such a small API addition.

The attached patch adds a new value for dmx_output_t:
DMX_OUT_TSDEMUX_TAP, which sends TS to the demux0 device. With this
patch and a dvb-usb-dib0700 (and UK Freeview from Sandy Heath), I can
successfully capture an audio/video PID pair into a TS file that mplayer
can play back.

Signed-off-by: Peter Hartley <pdh@utter.chaos.org.uk>
Acked-by: Andreas Oberritter <obi@linuxtv.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
2008-04-24 14:07:46 -03:00
..
acpi
asm-alpha asm-generic: add node_to_cpumask_ptr macro 2008-04-19 19:44:58 +02:00
asm-arm Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/drzeus/mmc 2008-04-21 17:23:30 -07:00
asm-avr32 avr32: add include/asm-avr32/serial.h 2008-04-19 20:40:10 -04:00
asm-blackfin
asm-cris
asm-frv frv: remove HARD_RESET_NOW() 2008-04-21 16:03:13 -07:00
asm-generic asm-generic: add node_to_cpumask_ptr macro 2008-04-19 19:44:58 +02:00
asm-h8300
asm-ia64 [IA64] move XP and XPC to drivers/misc/sgi-xp 2008-04-22 15:08:17 -07:00
asm-m32r
asm-m68k
asm-m68knommu
asm-mips
asm-mn10300
asm-parisc
asm-powerpc Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpc 2008-04-21 15:50:49 -07:00
asm-ppc
asm-s390
asm-sh i2c: Renesas SH7760 I2C master driver 2008-04-22 22:16:47 +02:00
asm-sparc Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc-2.6 2008-04-21 17:20:53 -07:00
asm-sparc64 Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc-2.6 2008-04-21 17:20:53 -07:00
asm-um
asm-v850
asm-x86 Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mingo/linux-2.6-sched-devel 2008-04-21 15:40:24 -07:00
asm-xtensa
crypto [CRYPTO] aes: Export generic setkey 2008-04-21 10:19:34 +08:00
keys KEYS: Fix the comment to match the file name in rxrpc-type.h. 2008-04-21 22:43:55 +00:00
linux V4L/DVB (7293): DMX_OUT_TSDEMUX_TAP: record two streams from same mux, resend 2008-04-24 14:07:46 -03:00
math-emu
media V4L/DVB (7276): soc-camera: deactivate cameras when not used 2008-04-24 14:07:46 -03:00
mtd
net [IPSEC]: Fix catch-22 with algorithm IDs above 31 2008-04-22 00:46:42 -07:00
pcmcia
rdma IB: convert struct class_device to struct device 2008-04-19 19:10:30 -07:00
rxrpc
scsi Merge git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-2.6 2008-04-21 15:49:58 -07:00
sound
video
xen
Kbuild