Both GCC and Clang create code that inlines the loops in
next_input() and next_output() at high optimization
levels (presumably when there are not too many devices)
and this code leads to the creation of .got entries:
e7: 48 3b 3d 00 00 00 00 cmp 0x0(%rip),%rdi # ee <av_input_video_device_next+0xe>
ea: R_X86_64_REX_GOTPCRELX ff_alsa_demuxer-0x4
ee: 74 43 je 133 <av_input_video_device_next+0x53>
f0: 48 3b 3d 00 00 00 00 cmp 0x0(%rip),%rdi # f7 <av_input_video_device_next+0x17>
f3: R_X86_64_REX_GOTPCRELX ff_fbdev_demuxer-0x4
f7: 74 41 je 13a <av_input_video_device_next+0x5a>
These relocations can't be fixed up lateron when it is known
that the symbols exist in the same DSO.
This commit therefore marks these symbols as hidden, leading
to code like this:
f7: 48 8d 05 00 00 00 00 lea 0x0(%rip),%rax # fe <av_input_video_device_next+0xe>
fa: R_X86_64_PC32 ff_alsa_demuxer-0x4
fe: 48 39 c7 cmp %rax,%rdi
101: 74 55 je 158 <av_input_video_device_next+0x68>
103: 48 8d 05 00 00 00 00 lea 0x0(%rip),%rax # 10a <av_input_video_device_next+0x1a>
106: R_X86_64_PC32 ff_fbdev_demuxer-0x4
10a: 48 39 c7 cmp %rax,%rdi
10d: 74 50 je 15f <av_input_video_device_next+0x6f>
(Note: It is actually strange that the compiler creates code
that tries to read the addresses from the .got given that the
addresses can be read directly from indev_list/outdev_list.)
Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
This commit does for AVInputFormat what commit
59c9dc82f4 did for AVOutputFormat:
It adds a new type FFInputFormat, moves all the internals
of AVInputFormat to it and adds a now reduced AVInputFormat
as first member.
This does not affect/improve extensibility of both public
or private fields for demuxers (it is still a mess due to lavd).
This is possible since 50f34172e0
(which removed the last usage of an internal field of AVInputFormat
in fftools).
(Hint: tools/probetest.c accesses the internals of FFInputFormat
as well, but given that it is a testing tool this is not considered
a problem.)
Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
This commit does for AVOutputFormat what commit
20f9727018 did for AVCodec:
It adds a new type FFOutputFormat, moves all the internals
of AVOutputFormat to it and adds a now reduced AVOutputFormat
as first member.
This does not affect/improve extensibility of both public
or private fields for muxers (it is still a mess due to lavd).
Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
Signed-off-by: Anton Khirnov <anton@khirnov.net>
This group is mainly for the users of *_mpeg4audio_get_config2();
it is not for those who only use avpriv_mpeg4audio_sample_rates.
This is in preparation for splitting the latter into a file of its own;
if there were no CONFIG_EXTRA group for *_mpeg4audio_get_config2()
users, one would have to add a dependency to the new file for all
these users on top of the existing dependency on mpeg4audio.o.
Adding a new CONFIG_EXTRA group only takes effect after a reconfigure;
so in order to force a reconfigure some unnecessary headers from
libavdevice/alldevices.c have been removed.
Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
This is possible now that the next-API is gone.
Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
Signed-off-by: James Almer <jamrial@gmail.com>
This reverts commit 0fd475704e.
Revert "lavd: fix iterating of input and output devices"
This reverts commit ce1d77a5e7.
Signed-off-by: Josh de Kock <josh@itanimul.li>
In the previous implementation the first input or output device
was skipped when device_next was called with prev = NULL
Signed-off-by: Felix Matouschek <felix@matouschek.org>
Signed-off-by: Timo Rothenpieler <timo@rothenpieler.org>
This commit adds an indev for Android devices on API level 24+ which
uses the Android NDK Camera2 API to capture video from builtin cameras
Signed-off-by: Felix Matouschek <felix@matouschek.org>
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
Support for this device has been removed in the Linux kernel since v2.6.37.
dv1394 has been superseded by libiec61883 which is functionally equivalent.
Signed-off-by: Josh de Kock <josh@itanimul.li>
Signed-off-by: Diego Biurrun <diego@biurrun.de>
The libavformat API is not suitable for exporting output devices as muxers.
Some practical problems are e.g. lack of timing/synchronization mechanisms
or interaction with output-specific features.
Support for this device has been removed in kernel since v2.6.37. dv1394 has been superseded by libiec61883 which is functionally equivalent.
Signed-off-by: Josh de Kock <josh@itanimul.li>
Signed-off-by: wm4 <nfxjfg@googlemail.com>
Using AVOnce as a stack variable makes no sense as the state is lost
when the function exits.
This fixes repeated calls to av(filter/device)_register_all
Based on original code by Christophe Gisquet in 2010, updated to work
with current ffmpeg APIs.
Supports grabbing a single window or an area of the screen, including
support for multiple monitors (Windows does funky stuff with negative
coordinates here).
I've moved most of the configuration to AVOptions; the input file name
is now only the string "desktop", or "title=<windowname>" to select a
single window. The AVOptions are the same as x11grab where possible.
Code has been added to support a "show_region" mode, like x11grab, which
will draw a rectangle on the screen around the area being captured.
Instead of duplicating code for paletted image handling, I make use of
the GDI API's ability to output DIB (BMP) images, which can be run
through ffmpeg's existing BMP decoder.
Signed-off-by: Calvin Walton <calvin.walton@kepstin.ca>
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
Based on the work of Jeff Moguillansky <Jeff.Moguillansky@am.sony.com>.
See thread:
Subject: [FFmpeg-devel] x11 output device for libavdevice
Date: Wed, 10 Apr 2013 23:10:47 +0000
The function find_things() in configure is confused by component
registration calls as part of multiline macros defining combined
component registration. Coalesce those macros into one line to
work around the issue.
Signed-off-by: Diego Biurrun <diego@biurrun.de>
Signed-off-by: Martin Storsjö <martin@martin.st>
It currently use the simple api and is using the latency information
provided only to offset the stream start.
Signed-off-by: Luca Barbato <lu_zero@gentoo.org>
Andreas Rheinhardt
Andreas Rheinhardt
James Almer
Thilo Borgmann
Carl Eugen Hoyos
Josh de Kock
Felix Matouschek
Diego Biurrun
Mark Thompson
Clément Bœsch
Clément Bœsch
Maksym Veremeyenko
Hendrik Leppkes
Muhammad Faiz
Alexandre Lision
Luca Barbato
Deti Fliegl
Thilo Borgmann
Calvin Walton
Vadim Kalinsky
Ramiro Polla
Lukasz Marek
Stefano Sabatini
Clément Bœsch
Paul B Mahol
Georg Lippitsch
Michael Niedermayer
Anton Khirnov