Motivated by a desire to use vf_libplacebo as a GPU-accelerated
cropping/padding/zooming filter. This commit adds support for setting
the `input/target.crop` fields as dynamic expressions.
Re-use the same generic variables available to other scale and crop type
filters, and also add some more that we can afford as a result of being
able to set these properties dynamically.
It's worth pointing out that `out_t/ot` is currently redundant with
`in_t/t` since it will always contain the same PTS values, but I plan on
changing this in the near future.
I decided to also expose `crop_w/crop_h` and `pos_w/pos_h` as variables
in the expression parser itself, since this enables the fairly common
use case of determining dimensions first and then placing the image
appropriately, such as is done in the default behavior (which centers
the cropped/placed region by default).
In some circumstances, libplacebo will clear the background as a result
of cropping/padding. Currently, this uses the hard-coded default fill
color of black. This option makes this behavior configurable.
Will remove native backend, so change the default backend in filters,
and also remove the python scripts which generate native model file.
Signed-off-by: Ting Fu <ting.fu@intel.com>
Native backend will be removed in following commits, so change the
dnn interface and modify the error message in it first.
Signed-off-by: Ting Fu <ting.fu@intel.com>
Not doing so is an obvious oversight - the ICC profile is tied to the
original colorspace, so if we change it, we should definitely strip this
information.
We should probably also have an extra option to control whether the ICC
profile should be stripped, ignored, or applied, but for now this fixes
an existing bug.
Otherwise main and overlay videos share the same input region. Note NULL
pointer imples the whole overlay video will be processed.
Signed-off-by: Haihao Xiang <haihao.xiang@intel.com>
Clarify failure in case of x/y building a too big matrix.
Example:
$ ffmpeg -hide_banner -f lavfi -i color=c=white:size=640x360,unsharp=lx=5:ly=23 -f null -t 1 -
[Parsed_unsharp_1 @ 0x5650e1c30240] luma matrix size (lx/2+ly/2)*2=26 greater than maximum value 25
color=c=white:size=640x360,unsharp=lx=5:ly=23: Invalid argument
Fix trac issue:
http://trac.ffmpeg.org/ticket/6033
Otherwise the output format is not changed when output is in system
memory. For example, the output format is still p010le in the following
case:
$ ffmpeg -qsv_device /dev/dri/renderD128 -f lavfi -i testsrc -vf
"format=p010le,vpp_qsv=extra_hw_frames=8:format=nv12" -f null -
...
Output #0, null, to 'pipe:':
Metadata:
encoder : Lavf60.4.100
Stream #0:0: Video: wrapped_avframe, p010le(tv, progressive), 320x240
[SAR 1:1 DAR 4:3], q=2-31, 200 kb/s, 25 fps, 25 tbn
Signed-off-by: Haihao Xiang <haihao.xiang@intel.com>
