Decklink devices can output 2, 8 or 16 audio channels along video.
The code was limited to 2 or 8 channels. The commit enables 16 audio
channels (relevant for SDI outputs).
Signed-off-by: Marton Balint <cus@passwd.hu>
v2:
- use uint16_t instead of int to store 10-bit ancillary data
- fix ancillary line numbers for 1080p
- some comments and clarifications as requested by Aaron Levinson
Signed-off-by: Marton Balint <cus@passwd.hu>
This also add supports for 4K DeckLink cards because they always output the
ancillary data in 10-bit.
v2:
- only try teletext decoding for 576i PAL mode
- some comments as requested by Aaron Levinson
Signed-off-by: Marton Balint <cus@passwd.hu>
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
Purpose: Made minor changes to get the decklink avdevice code to build
using Visual C++.
Notes: Made changes to configure per Hendrik Leppkes's review of first
and second versions of patch. Also made slight alterations per Marton
Balint's reviews.
Comments:
-- configure: Added if enabled decklink section and setting
decklink_indev_extralibs and decklink_outdev_extralibs here for
both mingw and Windows. Also eliminated the setting of these
variables in the mingw section earlier in the file.
-- libavdevice/decklink_common.cpp: Switched the order of the include
of libavformat/internal.h to workaround build issues with Visual
C++. See comment in file for more details.
-- libavdevice/decklink_dec.cpp:
a) Rearranged the include of libavformat/internal.h (for reasons as
described above).
b) Made slight alteration to an argument for call to av_rescale_q() to
workaround a compiler error with Visual C++. This appears to only
be an issue when building C++ files with Visual C++. See comment
in code for more details.
-- libavdevice/decklink_enc.cpp: Rearranged the include of
libavformat/internal.h (for reasons as described above).
Signed-off-by: Aaron Levinson <alevinsn@aracnet.com>
Signed-off-by: Marton Balint <cus@passwd.hu>
* commit '92db5083077a8b0f8e1050507671b456fd155125':
build: Generate pkg-config files from Make and not from configure
build: Store library version numbers in .version files
Includes cherry-picked commits 8a34f36593 and
ee164727dd to fix issues.
Changes were also made to retain support for raise_major and build_suffix.
Reviewed-by: ubitux
Merged-by: James Almer <jamrial@gmail.com>
* commit '11a9320de54759340531177c9f2b1e31e6112cc2':
build: Move build-system-related helper files to a separate subdirectory
"ffbuild" directory name is used instead of "avbuild".
Merged-by: Clément Bœsch <u@pkh.me>
* commit '1818a640cfdccd52e97edf13564f45bc3d0d93eb':
build: Fix dependencies for alsa/jack/sndio support
Added explicit enable (which will be automatically added later on in
ee480790c) to actually fix this commit. Without the explicit enables,
alsa, jack and sndio gets disabled.
Also added jack, alsa and sndio to the have list so the HAVE_* are
populated to make (this fixes the SKIPHEADERS chunks).
Merged-by: Clément Bœsch <u@pkh.me>
Purpose: avdevice/decklink: Removed pthread dependency by replacing
semaphore used in code appropriately. Doing so makes it easier to
build ffmpeg using Visual C++ on Windows. This is a contination of
Kyle Schwarz's "avdevice/decklink: Remove pthread dependency" patch
that is available at https://patchwork.ffmpeg.org/patch/2654/ . This
patch wasn't accepted, and as far as I can tell, there was no
follow-up after it was rejected.
Notes: Used Visual Studio 2015 (with update 3) for this.
Comments:
-- configure: Eliminated pthreads dependency for decklink_indev_deps
and decklink_outdev_deps and replaced with threads dependency
-- libavdevice/decklink_common.cpp / .h:
a) Eliminated semaphore and replaced with a combination of a mutex,
condition variable, and a counter (frames_buffer_available_spots).
b) Removed include of pthread.h and semaphore.h and now using
libavutil/thread.h instead.
-- libavdevice/decklink_dec.cpp: Eliminated include of pthread.h and
semaphore.h.
-- libavdevice/decklink_enc.cpp:
a) Eliminated include of pthread.h and semaphore.h.
b) Replaced use of semaphore with the equivalent using a combination
of a mutex, condition variable, and a counter
(frames_buffer_available_spots). In theory, libavutil/thread.h and
the associated code could have been modified instead to add
cross-platform implementations of the sem_ functions, but an
inspection of the ffmpeg source base indicates that there are only
two cases in which semaphores are used (including this one that was
replaced), so it was deemed to not be worth the effort.
Signed-off-by: Marton Balint <cus@passwd.hu>
* commit '2f806622e1270d3ed1d41a53049a19673dafbe70':
bktr: Use memset(0) instead of zero initialization for struct sigaction
Merged-by: Clément Bœsch <u@pkh.me>
This disables everything that was deprecated at least 18 months ago.
Readjust the minimum API version as needed, postponing any
API-incompatible changes until the next bump.
Signed-off-by: Vittorio Giovara <vittorio.giovara@gmail.com>
This moves work from the configure to the Make stage where it can
be parallelized and ensures that pkgconfig files are updated when
library versions change.
Bug-Id: 449
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.
sigaction is not defined in standards as a struct starting with another
struct. Some *BSD variants do however, resulting in a warning from the
zero initialization, which this change eliminates.
This partially reverts a92be9b856.
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>
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>
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>
Split version files into one line per symbol/directive to allow compatibility
with the Solaris linker without preprocessing and eliminate $ from version file
templates to simplify the postprocessing shell command.
* commit 'd12b5b2f135aade4099f4b26b0fe678656158c13':
build: Split test programs off into separate files
Some conversions done by: James Almer <jamrial@gmail.com>
Merged-by: Derek Buitenhuis <derek.buitenhuis@gmail.com>
There are still a couple of deprecated calls that I’m not sure what to do with.
They are both related to some logic around AVCodecContext.coded_frame.
I couldn’t find anywhere that really documented what that was, or where it was intended to move to.
I left the warnings on.
Reviewed-by: Deti Fliegl <deti@fliegl.de>
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
* commit '30e9ef21cea09fa5e880e979c9f5b39edccbb6f4':
timefilter-test: Only compile timefilter-test if JACK is enabled
Merged-by: Derek Buitenhuis <derek.buitenhuis@gmail.com>
Restore alphabetical order in lists, break overly long lines, do some
prettyprinting, add some explanatory section comments, group parts
together that belong together logically.
Currently, AVStream contains an embedded AVCodecContext instance, which
is used by demuxers to export stream parameters to the caller and by
muxers to receive stream parameters from the caller. It is also used
internally as the codec context that is passed to parsers.
In addition, it is also widely used by the callers as the decoding (when
demuxer) or encoding (when muxing) context, though this has been
officially discouraged since Libav 11.
There are multiple important problems with this approach:
- the fields in AVCodecContext are in general one of
* stream parameters
* codec options
* codec state
However, it's not clear which ones are which. It is consequently
unclear which fields are a demuxer allowed to set or a muxer allowed to
read. This leads to erratic behaviour depending on whether decoding or
encoding is being performed or not (and whether it uses the AVStream
embedded codec context).
- various synchronization issues arising from the fact that the same
context is used by several different APIs (muxers/demuxers,
parsers, bitstream filters and encoders/decoders) simultaneously, with
there being no clear rules for who can modify what and the different
processes being typically delayed with respect to each other.
- avformat_find_stream_info() making it necessary to support opening
and closing a single codec context multiple times, thus
complicating the semantics of freeing various allocated objects in the
codec context.
Those problems are resolved by replacing the AVStream embedded codec
context with a newly added AVCodecParameters instance, which stores only
the stream parameters exported by the demuxers or read by the muxers.
Current if statement would always be false due to assigning the value of
S_OK which equals 0.
Signed-off-by: FearThe1337 <git@fearthe1337.com>
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
The next frame time could slip, causing the frame rate to drop until
frames were dropped. Now will capture at the next correct moment instead.
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
As it is already written in the documentation, BMD DeckLink cards
are capable of capturing 2, 8 or 16 audio channels (for SDI Inputs).
Currently the value is hardcoded to 2. Introduces new option.
Reviewed-by: Deti Fliegl <deti@fliegl.de>
Signed-off-by: Matthias Hunstock <atze@fem.tu-ilmenau.de>
Signed-off-by: Marton Balint <cus@passwd.hu>
Libav, for some reason, merged this as a public API function. This will
aid in future merges.
A define is left for backwards compat, just in case some person
used it, since it is in a public header.
Signed-off-by: Derek Buitenhuis <derek.buitenhuis@gmail.com>
Here it is mostly a cosmetic change, but there might be benefits in that
there are no compat hacks for lround, while there are for lrint.
Signed-off-by: Ganesh Ajjanagadde <gajjanagadde@gmail.com>
