Add an AVOption to the libjxl encoder wrapper, which exposes the flag
uses_original_profile in libjxl. For highly unusual ICC profiles where
the target needs to stay in the original space, this can be useful.
Signed-off-by: Leo Izen <leo.izen@gmail.com>
libjxl doesn't support negative strides, but JPEG XL has an orientation
flag inside the codestream. We can use this to work around the library
limitation, by taking the absolute value of the negative row stride,
sending the image up-side-down, and telling the library that the image
has a vertical-flip orientation.
Signed-off-by: Leo Izen <leo.izen@gmail.com>
These pixel formats have always been supported by libjxl, but at the
time this plugin was written, they were not in FFmpeg yet. Now that
they are in FFmpeg, we should support them.
Signed-off-by: Leo Izen <leo.izen@gmail.com>
Unnecessary since acf63d5350adeae551d412db699f8ca03f7e76b9;
also avoids relocations.
Reviewed-by: Anton Khirnov <anton@khirnov.net>
Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
Since many distributions ship libjxl 0.7.0 still, we'd still prefer to
compile against that, but don't want to lose the features that require
libjxl 0.8.0 or greater. For this reason I've added preprocessor #ifdef
guards around the features that aren't necessarily in libjxl 0.7.0.
Signed-off-by: Leo Izen <leo.izen@gmail.com>
libjxl only accepts 16-bit buffers with its API, but it can
accept 9-bit to 15-bit input via a 16-bit buffer, provided the flag
is set declaring the buffer to be of the respective significant depth.
Likewise, it can only provide pixel data on decode as a 16-bit buffer
(if higher than 8) but does provide the metadata tagging the actual bit
depth.
This commit causes libjxlenc.c and libjxldec.c to respect this metadata
and tag/read it accordingly from AVCodecContext->bits_per_raw_sample.
Signed-off-by: Leo Izen <leo.izen@gmail.com>
It reduces typing: Before this patch, there were 105 codecs
whose long_name-definition exceeded the 80 char line length
limit. Now there are only nine of them.
Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
Codecs that can read/write ICC profiles deserve a special capability so
the common logic in encode.c/decode.c can decide whether or not there
needs to be any special handling for ICC profiles. The motivation here
is to be able to use it to decide whether or not an ICC profile needs to
be generated in the encode path, but it might as well get added to
decoders as well for purely informative reasons.
It's not entirely clear to me whether the "thp" and "smvjpeg" variants
of "mjpeg" should have this capability set or not, given that the code
technically supports it but I somehow doubt these files may contain
them. In either case, this cap is purely informative for decoders so it
doesn't matter too much either way.
It's also not entirely clear whether the "amv" encoder should signal ICC
profile support, but again erring on the side of caution, we probably
*shouldn't* be generating (and encoding!) ICC profiles for this type of
media file.
Signed-off-by: Niklas Haas <git@haasn.dev>
This is in preparation of switching the default init-thread-safety
to a codec being init-thread-safe.
Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
This patch prevents the libjxl encoder wrapper from failing to
encode images when the input video has untagged primaries. It will
instead assume BT.709/sRGB primaries and print a warning.
Signed-off-by: Leo Izen <leo.izen@gmail.com>
Whether an ICC profile is present or not, the libjxl
encoder wrapper should now properly read colorspace tags
and forward them to libjxl appropriately, rather than just
assume sRGB as before. It will also print warnings when
colorimetric assumptions are made about the input data.
Reviewed-by: Niklas Haas <git@haasn.dev>
Signed-off-by: Leo Izen <leo.izen@gmail.com>
Leo Izen
Anton Khirnov
Andreas Rheinhardt
Niklas Haas