15d160cc0b increased the UDP socket receiving buffer size
(64K ->384K), but missed to update this comments.
Reviewed-by: Marton Balint <cus@passwd.hu>
Signed-off-by: Jun Zhao <barryjzhao@tencent.com>
recvfrom() is not a cancellation point in pthreads-win32, see
https://sourceware.org/pthreads-win32/manual/pthread_cancel.html
In order to be able to cancel the reader thread on Win32 properly we first
shutdown the socket then call CancelIoEx to abort pending IO. Subsequent
recvfrom() calls will fail with WSAESHUTDOWN causing the thread to exit.
Fixes ticket #5717.
Signed-off-by: Marton Balint <cus@passwd.hu>
It is a common mistake that people only increase fifo_size when they experience
drops, unfortunately this does not help for higher bitrate (> 100 Mbps) streams
when the reader thread simply might not receive the packets in time (especially
under high CPU load) if the default 64 KB of kernel buffer size is used.
New default is determined so that common linux systems can set this buffer size
without tuning kernel parameters.
Signed-off-by: Marton Balint <cus@passwd.hu>
That alone supports specifying the interface based on its address. Getting the
interface index from the local address seems quite a bit of work in a platform
independent way...
Obviously for IPv6 we still always use MCAST_JOIN_SOURCE_GROUP.
As a side effect this also fixes ticket #7459.
Signed-off-by: Marton Balint <cus@passwd.hu>
We already use localaddr for the multicast joins without source filters, so we
should use them for source filters as well. This patch only fixes the
IP_ADD_SOURCE_MEMBERSHIP and the IP_BLOCK_SOURCE case.
Unless we do this, the kernel automatically selects an interface based on the
source address, and that interface might be different from the one set in
localaddr. For blocked sources this even casues EINVAL because we joined the
multicast group on a different interface.
Signed-off-by: Marton Balint <cus@passwd.hu>
This allows getting data only from a specific source IP. This is useful not
only for unicast but for multicast as well because multicast source
subscriptions do not act as source filters for the incoming packets.
Signed-off-by: Marton Balint <cus@passwd.hu>
glibc introduced _DEFAULT_SOURCE in version 2.19 to replace _BSD_SOURCE and
_SVID_SOURCE, which were deprecated in version 2.20. Add _DEFAULT_SOURCE
where the latter two are used to be forwards-compatible and avoid warnings
about the use of deprecated definitions.
We haven't had a stable release since the packet_gap addition, so probably it
is worth reworking the option to something that makes more sense to the end
user. Also add burst_bits option to specify maximum length of bit bursts.
Signed-off-by: Marton Balint <cus@passwd.hu>
Since d607861, service can not be NULL, only "0".
An UDP address with neither local port nor address leaves both
service and node to their default value, and POSIX specifies
that they are not allowed to be both NULL; "0" is equivalent
to an unspecified port for all currently known protocols.
Fix CID 1341570.
This fixes partially completed send()
Avoids holding the mutex during send()
fixes race conditions in error handling
removes copied non thread specific blocking code
Fixes deadlocks on closure
Fixes data loss on closure
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
This commit enables sending UDP packets in a background thread with specified delay.
When sending packets without a delay some devices with small RX buffer
( MAG200 STB, for example) will drop tail packets in bursts causing
decoding errors.
To use it specify "fifo_size" with "packet_gap" .
The output url will looks like udp://xxx:yyy?fifo_size=<output fifo
size>&packet_gap=<delay in usecs>
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
Instead of a linked list constructed at av_register_all(), store them
in a constant array of pointers.
Since no registration is necessary now, this removes some global state
from lavf. This will also allow the urlprotocol layer caller to limit
the available protocols in a simple and flexible way in the following
commits.
Glibc 2.20 onwards generates a deprecation warning for usage of _BSD_SOURCE and _SVID_SOURCE.
The solution from man feature_test_macros is to define both _DEFAULT_SOURCE and the old macros.
This solution is on the lines of the one in commit af1818276e.
Signed-off-by: Ganesh Ajjanagadde <gajjanagadde@gmail.com>
Signed-off-by: Ronald S. Bultje <rsbultje@gmail.com>
Add a missing AVClass member, check whether localaddr is null.
(Previously, localaddr was always a local stack buffer, while it
now also can be an avoption string which can be null.)
This fixes crashes when not passing any localaddr parameter, since
66028b7ba.
Signed-off-by: Martin Storsjö <martin@martin.st>
By appending `?dscp=26` to the URL, IP packets will be classified as
AF31 (assured forwarding for multimedia flows with low probability of
loss). On congested network, this allows a user to assign priorities to
flows.
Signed-off-by: Vincent Bernat <vincent@bernat.im>
Use the required socket option SO_BROADCAST to be able to stream to a broadcast
address.
Prior to the patch, trying to stream to a broadcast address was resulting to the
following error:
av_interleaved_write_frame(): Permission denied
The patch has been tested with:
ffmpeg -f v4l2 -framerate 30 -input_format yuyv422 -video_size 640x480 -i /dev/video0 \
-c:v libx264 -profile:v high -preset ultrafast -tune zerolatency -b:v 500k -pix_fmt yuv420p \
-f mpegts udp://192.168.1.255:5004?broadcast=1
I have added an option to let the user explicitly request broadcast in order to avoid
ffmpeg to broadcast unintentionally.
Signed-off-by: Olivier Langlois <olivier@trillion01.com>
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
When joining multicast groups, ffmpeg was using INADDR_ANY as interface address
which leads to enabling the multicast group on the interface with "default gateway".
Often multicast traffic is received over dedicated interface, which scenario ffmpeg was
unable to handle. With this patch, ffmpeg will enable multicast group to the interfaces
configured with address specified in &localaddr= parameter of udp:// URL. To avoid
loacal_addr resolve at udp_close(...) the UDPContext structure was extended with
struct sockaddr_storage local_addr_storage member, which is populated in udp_open(..)
and passed to udp_join_multicast_group() and udp_leave_multicast_group().
Signed-off-by: Stoian Ivanov <s.ivanov@teracomm.bg>
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
This allows us to explicitly fail if the caller tried to set
both inclusions and exclusions at the same time.
Signed-off-by: Martin Storsjö <martin@martin.st>
Jun Zhao
phunkyfish
Marton Balint
Xuchen Su
Steven Liu
Jun Zhao
Derek Buitenhuis
Diego Biurrun
Carl Eugen Hoyos
Nicolas George
Michael Niedermayer
Pavel Nikiforov
Anton Khirnov
Clément Bœsch
Luca Barbato
Ganesh Ajjanagadde
Michael Niedermayer
Martin Storsjö
Vincent Bernat
Thomas Volkert
Olivier Langlois
Lukasz Marek
rogerdpack
Stefano Sabatini
Stoian Ivanov
Ed Torbett