On Thu, Jun 12, 2025 at 11:38:59AM +0200, Quentin RENARD wrote: > As mentioned here > (https://ffmpeg.org/pipermail/ffmpeg-devel/2025-June/344593.html), this is > the first step of a 2 steps patch: move the interpolation code out of the > vf_perspective filter so that we can use it in a new zoompan filter and apply > scale/crop floating point precision there. > > Signed-off-by: Quentin Renard <contact-git...@asticode.com> > --- > libavfilter/Makefile | 2 +- > libavfilter/perspective.c | 404 +++++++++++++++++++++++++++++++++++ > libavfilter/perspective.h | 67 ++++++ > libavfilter/vf_perspective.c | 372 +++----------------------------- > 4 files changed, 497 insertions(+), 348 deletions(-) > create mode 100644 libavfilter/perspective.c > create mode 100644 libavfilter/perspective.h > > diff --git a/libavfilter/Makefile b/libavfilter/Makefile > index 97f8f17272..7c6dfcf4bf 100644 > --- a/libavfilter/Makefile > +++ b/libavfilter/Makefile > @@ -426,7 +426,7 @@ OBJS-$(CONFIG_PAD_OPENCL_FILTER) += > vf_pad_opencl.o opencl.o opencl/ > OBJS-$(CONFIG_PALETTEGEN_FILTER) += vf_palettegen.o palette.o > OBJS-$(CONFIG_PALETTEUSE_FILTER) += vf_paletteuse.o framesync.o > palette.o > OBJS-$(CONFIG_PERMS_FILTER) += f_perms.o > -OBJS-$(CONFIG_PERSPECTIVE_FILTER) += vf_perspective.o > +OBJS-$(CONFIG_PERSPECTIVE_FILTER) += vf_perspective.o > perspective.o > OBJS-$(CONFIG_PHASE_FILTER) += vf_phase.o > OBJS-$(CONFIG_PHOTOSENSITIVITY_FILTER) += vf_photosensitivity.o > OBJS-$(CONFIG_PIXDESCTEST_FILTER) += vf_pixdesctest.o > diff --git a/libavfilter/perspective.c b/libavfilter/perspective.c > new file mode 100644 > index 0000000000..ab200f8532 > --- /dev/null > +++ b/libavfilter/perspective.c [...] > +static int perspective_resample_cubic(AVFilterContext *ctx, void *arg, > + int job, int nb_jobs) > +{ [...] > +static int perspective_resample_linear(AVFilterContext *ctx, void *arg, > + int job, int nb_jobs) > +{ [...] > +static int calc_luts(PerspectiveResampleContext *s, int w, int h, double > ref[4][2]) > +{ [...] > diff --git a/libavfilter/vf_perspective.c b/libavfilter/vf_perspective.c > index 58510f6f13..f5766eed7a 100644 > --- a/libavfilter/vf_perspective.c > +++ b/libavfilter/vf_perspective.c [...] > -static int calc_persp_luts(AVFilterContext *ctx, AVFilterLink *inlink) [...] > -static int resample_cubic(AVFilterContext *ctx, void *arg, > - int job, int nb_jobs) > -{ [...] > -static int resample_linear(AVFilterContext *ctx, void *arg, > - int job, int nb_jobs) > -{
please keep the functions in the same order so that a diff between
new libavfilter/perspective.c
and
old libavfilter/vf_perspective.c
is easy readable
thx
[...]
--
Michael GnuPG fingerprint: 9FF2128B147EF6730BADF133611EC787040B0FAB
Old school: Use the lowest level language in which you can solve the problem
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New school: Use the highest level language in which the latest supercomputer
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