[FFmpeg-trac] #4143(avfilter:open): Support Core Image of MacOSX
FFmpeg
trac at avcodec.org
Sun Mar 13 12:39:04 CET 2016
#4143: Support Core Image of MacOSX
-------------------------------------+-------------------------------------
Reporter: rusghon | Owner:
Type: enhancement | thilo.borgmann
Priority: wish | Status: open
Version: git-master | Component: avfilter
Keywords: osx | Resolution:
Blocking: | Blocked By:
Analyzed by developer: 0 | Reproduced by developer: 0
-------------------------------------+-------------------------------------
Comment (by ponpon):
thank you for your pointing out.
the result is the same. the filter isn't tried still.
{{{
./configure --prefix=${TARGET} --cc=clang-mp-3.7 --cxx=clang++-mp-3.7 &&
make -j 8
CC libavutil/xtea.o
HTML doc/ffmpeg.html
HTML doc/ffplay.html
HTML doc/ffprobe.html
HTML doc/ffserver.html
HTML doc/ffmpeg-all.html
HTML doc/ffplay-all.html
HTML doc/ffprobe-all.html
HTML doc/ffserver-all.html
HTML doc/ffmpeg-filters.html
HTML doc/libswscale.html
HTML doc/libswresample.html
HTML doc/libavcodec.html
HTML doc/libavformat.html
HTML doc/libavdevice.html
HTML doc/libavfilter.html
HTML doc/developer.html
HTML doc/faq.html
HTML doc/fate.html
doc/filters.texi:4958: misplaced {
doc/filters.texi:4958: misplaced }
doc/filters.texi:4969: @option expected braces
doc/filters.texi:4985: unexpected @
doc/filters.texi:4985: unexpected @
doc/filters.texi:4985: unexpected @
doc/filters.texi:4985: unexpected @
doc/filters.texi:5021: unknown command `inputCorrectionLevel'
make: *** [doc/ffmpeg-filters.html] Error 1
make: *** Waiting for unfinished jobs....
HTML doc/general.html
doc/filters.texi:4958: misplaced {
doc/filters.texi:4958: misplaced }
doc/filters.texi:4969: @option expected braces
doc/filters.texi:4985: unexpected @
doc/filters.texi:4985: unexpected @
doc/filters.texi:4985: unexpected @
doc/filters.texi:4985: unexpected @
doc/filters.texi:5021: unknown command `inputCorrectionLevel'
make: *** [doc/ffplay-all.html] Error 1
doc/filters.texi:4958: misplaced {
doc/filters.texi:4958: misplaced }
doc/filters.texi:4969: @option expected braces
doc/filters.texi:4985: unexpected @
doc/filters.texi:4985: unexpected @
doc/filters.texi:4985: unexpected @
doc/filters.texi:4985: unexpected @
doc/filters.texi:5021: unknown command `inputCorrectionLevel'
make: *** [doc/ffprobe-all.html] Error 1
doc/filters.texi:4958: misplaced {
doc/filters.texi:4958: misplaced }
doc/filters.texi:4969: @option expected braces
doc/filters.texi:4985: unexpected @
doc/filters.texi:4985: unexpected @
doc/filters.texi:4985: unexpected @
doc/filters.texi:4985: unexpected @
doc/filters.texi:5021: unknown command `inputCorrectionLevel'
make: *** [doc/ffmpeg-all.html] Error 1
doc/filters.texi:4958: misplaced {
doc/filters.texi:4958: misplaced }
doc/filters.texi:4969: @option expected braces
doc/filters.texi:4985: unexpected @
doc/filters.texi:4985: unexpected @
doc/filters.texi:4985: unexpected @
doc/filters.texi:4985: unexpected @
doc/filters.texi:5021: unknown command `inputCorrectionLevel'
make: *** [doc/ffserver-all.html] Error 1
}}}
man page
{{{
man ffmpeg-filters
copy
Copy the input source unchanged to the output. This is mainly
useful for testing purposes.
at section coreimage
Video filtering on GPU using Apple's CoreImage API on OSX.
Hardware acceleration is based on an OpenGL context. Usually, this
means it is processed by video hardware. However, software-based OpenGL
implementations exist which means there is no guarantee for hardware
processing. It depends on the respective OSX.
There are many filters and image generators provided by Apple that
come with a large variety of options. The filter has to be referenced by
its name along with its options.
The coreimage filter accepts the following options:
at table @option
at item list_filters List all available filters along with all
their respective options as well as possible minimum and maximum values
along with the default values.
at example
coreimage=list_filters=true
at end example
at item filter
Specifiy all filters by their respective name and options.
Use B<list_filters> to determine all valid filter names and
options.
Numerical options are specified by a float value and are
automatically clamped to their respective value range.
Vector and color options have to be specified by a list of space
separated float values. Character escaping has to be done.
A special option name C<default> is available to use default
options for a filter.
It is required to specify either C<default> or at least one of the
filter options.
All omitted options are used with their default values.
The syntax of the filter string is as follows:
at example
filter=E<lt>NAMEE<gt>@E<lt>OPTIONE<gt>=E<lt>VALUEE<gt>[@E<lt>OPTIONE<gt>=E<lt>VALUEE<gt>][...][#E<lt>NAMEE<gt>@E<lt>OPTIONE<gt>=E<lt>VALUEE<gt>[@E<lt>OPTIONE<gt>=E<lt>VALUEE<gt>][...]]
at end example
at end table
Several filters can be chained for successive processing without
GPU-HOST transfers allowing for fast processing of complex filter chains.
Currently, only filters with zero (generators) or exactly one (filters)
input image and one output image are supported. Also, transition
filters are not yet usable as intended.
Some filters generate output images with additional padding
depending on the respective filter kernel. The padding is automatically
removed to ensure the filter output has the same size as the input image.
For image
generators, the size of the output image is determined by the given
input image. The generators do not use the pixel information of the input
image to generate their output. However, the generated output is blended
onto the input image, resulting in partial or complete coverage of
the output image.
at subsection Examples
at itemize
at item
List all filters available:
at example
coreimage=list_filters=true
at end example
at item
Use the CIBoxBlur filter with default options to blur an image:
at example
coreimage=filter=CIBoxBlur at default
at end example
at item
Use a filter chain with CISepiaTone at default values and
CIVignetteEffect with its center at 100x100 and a radius of 50 pixels:
at example
coreimage=filter=CIBoxBlur at default#CIVignetteEffect at
inputCenter=100\ 100 at inputRadius=50
at end example
at item
Use nullsrc and CIQRCodeGenerator to create a QR code for the
FFmpeg homepage, given as complete and escaped command-line for Apple's
standard bash shell:
at example
./ffmpeg -f lavfi -i
nullsrc=s=100x100,coreimage=filter=CIQRCodeGenerator at
inputMessage=https\\\\\://FFmpeg.org/@inputCorrectionLevel=H -frames:v 1
QRCode.png
at end example
at end itemize
crop
Crop the input video to given dimensions.
}}}
--
Ticket URL: <https://trac.ffmpeg.org/ticket/4143#comment:11>
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