[FFmpeg-devel] [PATCH] avfilter: add setrange filter
Paul B Mahol
onemda at gmail.com
Wed Dec 6 10:14:09 EET 2017
On 12/3/17, Paul B Mahol <onemda at gmail.com> wrote:
> Signed-off-by: Paul B Mahol <onemda at gmail.com>
> ---
> doc/filters.texi | 31 ++++++++++++++++++
> libavfilter/Makefile | 1 +
> libavfilter/allfilters.c | 1 +
> libavfilter/vf_setparams.c | 82
> ++++++++++++++++++++++++++++++++++++++++++++++
> 4 files changed, 115 insertions(+)
> create mode 100644 libavfilter/vf_setparams.c
>
> diff --git a/doc/filters.texi b/doc/filters.texi
> index f7c371592f..718263a608 100644
> --- a/doc/filters.texi
> +++ b/doc/filters.texi
> @@ -18496,6 +18496,37 @@ asetpts=N/SR/TB
>
> @end itemize
>
> + at section setrange
> +
> +Force color range for the output video frame.
> +
> +The @code{setrange} filter marks the color range property for the
> +output frames. It does not change the input frame, but only sets the
> +corresponding property, which affects how the frame is treated by
> +following filters.
> +
> +The filter accepts the following options:
> +
> + at table @option
> +
> + at item range
> +Available values are:
> +
> + at table @samp
> + at item auto
> +Keep the same color range property.
> +
> + at item unspecified, unknown
> +Set the color range as unspecified.
> +
> + at item limited, tv, mpeg
> +Set the color range as limited.
> +
> + at item full, pc, jpeg
> +Set the color range as full.
> + at end table
> + at end table
> +
> @section settb, asettb
>
> Set the timebase to use for the output frames timestamps.
> diff --git a/libavfilter/Makefile b/libavfilter/Makefile
> index 1c0cc1da80..6b06d57234 100644
> --- a/libavfilter/Makefile
> +++ b/libavfilter/Makefile
> @@ -300,6 +300,7 @@ OBJS-$(CONFIG_SEPARATEFIELDS_FILTER) +=
> vf_separatefields.o
> OBJS-$(CONFIG_SETDAR_FILTER) += vf_aspect.o
> OBJS-$(CONFIG_SETFIELD_FILTER) += vf_setfield.o
> OBJS-$(CONFIG_SETPTS_FILTER) += setpts.o
> +OBJS-$(CONFIG_SETRANGE_FILTER) += vf_setparams.o
> OBJS-$(CONFIG_SETSAR_FILTER) += vf_aspect.o
> OBJS-$(CONFIG_SETTB_FILTER) += settb.o
> OBJS-$(CONFIG_SHOWINFO_FILTER) += vf_showinfo.o
> diff --git a/libavfilter/allfilters.c b/libavfilter/allfilters.c
> index fc212e58db..707faad777 100644
> --- a/libavfilter/allfilters.c
> +++ b/libavfilter/allfilters.c
> @@ -309,6 +309,7 @@ static void register_all(void)
> REGISTER_FILTER(SETDAR, setdar, vf);
> REGISTER_FILTER(SETFIELD, setfield, vf);
> REGISTER_FILTER(SETPTS, setpts, vf);
> + REGISTER_FILTER(SETRANGE, setrange, vf);
> REGISTER_FILTER(SETSAR, setsar, vf);
> REGISTER_FILTER(SETTB, settb, vf);
> REGISTER_FILTER(SHOWINFO, showinfo, vf);
> diff --git a/libavfilter/vf_setparams.c b/libavfilter/vf_setparams.c
> new file mode 100644
> index 0000000000..7668bd4cdf
> --- /dev/null
> +++ b/libavfilter/vf_setparams.c
> @@ -0,0 +1,82 @@
> +/*
> + * This file is part of FFmpeg.
> + *
> + * FFmpeg is free software; you can redistribute it and/or
> + * modify it under the terms of the GNU Lesser General Public
> + * License as published by the Free Software Foundation; either
> + * version 2.1 of the License, or (at your option) any later version.
> + *
> + * FFmpeg is distributed in the hope that it will be useful,
> + * but WITHOUT ANY WARRANTY; without even the implied warranty of
> + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
> + * Lesser General Public License for more details.
> + *
> + * You should have received a copy of the GNU Lesser General Public
> + * License along with FFmpeg; if not, write to the Free Software
> + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301
> USA
> + */
> +
> +#include "libavutil/pixfmt.h"
> +#include "libavutil/opt.h"
> +#include "avfilter.h"
> +#include "internal.h"
> +#include "video.h"
> +
> +typedef struct SetParamsContext {
> + const AVClass *class;
> + int color_range;
> +} SetParamsContext;
> +
> +#define OFFSET(x) offsetof(SetParamsContext, x)
> +#define FLAGS AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_VIDEO_PARAM
> +
> +static const AVOption setrange_options[] = {
> + {"range", "select color range", OFFSET(color_range), AV_OPT_TYPE_INT,
> {.i64=-1},-1, AVCOL_RANGE_NB-1, FLAGS, "range"},
> + {"auto", "keep the same color range", 0, AV_OPT_TYPE_CONST,
> {.i64=-1}, 0, 0, FLAGS, "range"},
> + {"unspecified", NULL, 0, AV_OPT_TYPE_CONST,
> {.i64=AVCOL_RANGE_UNSPECIFIED}, 0, 0, FLAGS, "range"},
> + {"unknown", NULL, 0, AV_OPT_TYPE_CONST,
> {.i64=AVCOL_RANGE_UNSPECIFIED}, 0, 0, FLAGS, "range"},
> + {"limited", NULL, 0, AV_OPT_TYPE_CONST,
> {.i64=AVCOL_RANGE_MPEG}, 0, 0, FLAGS, "range"},
> + {"tv", NULL, 0, AV_OPT_TYPE_CONST,
> {.i64=AVCOL_RANGE_MPEG}, 0, 0, FLAGS, "range"},
> + {"mpeg", NULL, 0, AV_OPT_TYPE_CONST,
> {.i64=AVCOL_RANGE_MPEG}, 0, 0, FLAGS, "range"},
> + {"full", NULL, 0, AV_OPT_TYPE_CONST,
> {.i64=AVCOL_RANGE_JPEG}, 0, 0, FLAGS, "range"},
> + {"pc", NULL, 0, AV_OPT_TYPE_CONST,
> {.i64=AVCOL_RANGE_JPEG}, 0, 0, FLAGS, "range"},
> + {"jpeg", NULL, 0, AV_OPT_TYPE_CONST,
> {.i64=AVCOL_RANGE_JPEG}, 0, 0, FLAGS, "range"},
> + {NULL}
> +};
> +
> +AVFILTER_DEFINE_CLASS(setrange);
> +
> +static int filter_frame(AVFilterLink *inlink, AVFrame *frame)
> +{
> + SetParamsContext *s = inlink->dst->priv;
> +
> + if (s->color_range >= 0)
> + frame->color_range = s->color_range;
> + return ff_filter_frame(inlink->dst->outputs[0], frame);
> +}
> +
> +static const AVFilterPad inputs[] = {
> + {
> + .name = "default",
> + .type = AVMEDIA_TYPE_VIDEO,
> + .filter_frame = filter_frame,
> + },
> + { NULL }
> +};
> +
> +static const AVFilterPad outputs[] = {
> + {
> + .name = "default",
> + .type = AVMEDIA_TYPE_VIDEO,
> + },
> + { NULL }
> +};
> +
> +AVFilter ff_vf_setrange = {
> + .name = "setrange",
> + .description = NULL_IF_CONFIG_SMALL("Force color range for the output
> video frame."),
> + .priv_size = sizeof(SetParamsContext),
> + .priv_class = &setrange_class,
> + .inputs = inputs,
> + .outputs = outputs,
> +};
> --
> 2.11.0
>
>
will apply soon.
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