Fixes Coverity CID 1396863.

Signed-off-by: Marton Balint <cus@passwd.hu>

Fixes Coverity CID 1396859.

Signed-off-by: Marton Balint <cus@passwd.hu>

The framework will allocate a buffer and copy the data to it,
that takes time. But it avoids constently creating and
destroyng the shared memory segment, and that saves more time.

On my setup,
from ~200 to ~300 FPS at full screen (1920×1200),
from ~1400 to ~3300 at smaller size (640×480),
similar to legacy x11grab and confirmed by others.

Plus, shared memory segments are a scarce resource,
allocating potentially many is a bad idea.

Note: if the application were to drop all references to the
buffer before the next call to av_read_frame(), then passing
the shared memory segment as a refcounted buffer would be
even more efficient, but it is hard to guarantee, and it does
not happen with the ffmpeg command-line tool. Using a small
number of preallocated buffers and resorting to a copy when
the pool is exhausted would be a solution to get the better
of both worlds.

Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>

Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>

Signed-off-by: Marton Balint <cus@passwd.hu>

Signed-off-by: Marton Balint <cus@passwd.hu>

Signed-off-by: Marton Balint <cus@passwd.hu>

This commit also adds an sdl alias for the configure script.

There is a paragraph for unsupported SDL formats.

Signed-off-by: Josh de Kock <josh@itanimul.li>

Signed-off-by: Lukasz Marek <lukasz.m.luki2@gmail.com>
Signed-off-by: Josh de Kock <josh@itanimul.li>

Acked-by: Michael Niedermayer
Signed-off-by: Josh de Kock <josh@itanimul.li>

prevent non-rgb24 crashes on windows 10 anniversary ed

Signed-off-by: Roger Pack <rogerpack2005@gmail.com>

When finding a video mode based on frame size and frame rate,
use AVRational methods instead of simple comparison. Add debug information.

Signed-off-by: Matthias Hunstock <atze@fem.tu-ilmenau.de>
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>

Provide the stream with the correct fps information when capturing.

Signed-off-by: Matthias Hunstock <atze@fem.tu-ilmenau.de>
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>

Signed-off-by: Timothy Gu <timothygu99@gmail.com>

The macros were moved to compat/dispatch_semaphore/semaphore.h after a libav merge, and were never removed from jack.c

Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>

Signed-off-by: James Almer <jamrial@gmail.com>

The input packet is already unref'd by the calling function.

Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>

Fixes ticket #5669.

Signed-off-by: Marton Balint <cus@passwd.hu>

Reviewed-by: Deti Fliegl <deti@fliegl.de>
Signed-off-by: Marton Balint <cus@passwd.hu>

Reviewed-by: Deti Fliegl <deti@fliegl.de>
Signed-off-by: Marton Balint <cus@passwd.hu>

This patch also makes BlackMagic drivers v10.6.1 a hard requirement.

Reviewed-by: Deti Fliegl <deti@fliegl.de>
Signed-off-by: Marton Balint <cus@passwd.hu>

Reviewed-by: Deti Fliegl <deti@fliegl.de>
Signed-off-by: Marton Balint <cus@passwd.hu>

Reviewed-by: Deti Fliegl <deti@fliegl.de>
Signed-off-by: Marton Balint <cus@passwd.hu>

Reviewed-by: Deti Fliegl <deti@fliegl.de>
Signed-off-by: Marton Balint <cus@passwd.hu>

Reviewed-by: Deti Fliegl <deti@fliegl.de>
Signed-off-by: Marton Balint <cus@passwd.hu>

Reviewed-by: Deti Fliegl <deti@fliegl.de>
Signed-off-by: Marton Balint <cus@passwd.hu>

Signed-off-by: rogerdpack <rogerpack2005@gmail.com>
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>

Signed-off-by: rogerdpack <rogerpack2005@gmail.com>
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>

Not all v4l2 devices implement the VIDIOC_G_PARM ioctl. This patch allow
ffmpeg to open such device and treat it the same as devices that do
implement the ioctl but returns that it do not implement the
V4L2_CAP_TIMEPERFRAME capability.

Signed-off-by: Niklas Söderlund <niklas.soderlund+renesas@ragnatech.se>
Reviewed-by: Benoit Fouet <benoit.fouet@free.fr>
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>