[FFmpeg-devel] avfilter: add setrange filter

Signed-off-by: Paul B Mahol <onemda@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

On 12/3/17, Paul B Mahol <onemda@gmail.com> wrote:
> Signed-off-by: Paul B Mahol <onemda@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
>
> +@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:
> +
> +@table @option
> +
> +@item range
> +Available values are:
> +
> +@table @samp
> +@item auto
> +Keep the same color range property.
> +
> +@item unspecified, unknown
> +Set the color range as unspecified.
> +
> +@item limited, tv, mpeg
> +Set the color range as limited.
> +
> +@item full, pc, jpeg
> +Set the color range as full.
> +@end table
> +@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.