From: Niklas Haas <g...@haasn.dev>
Can be used to configure libplacebo's underlying raw options, which
sometimes includes new or advanced / in-depth settings not (yet) exposed
by vf_libplacebo.
---
doc/filters.texi | 10 ++++++++++
libavfilter/vf_libplacebo.c | 13 +++++++++++++
2 files changed, 23 insertions(+)
diff --git a/doc/filters.texi b/doc/filters.texi
index cac1ee43810..421785ef46f 100644
--- a/doc/filters.texi
+++ b/doc/filters.texi
@@ -16312,6 +16312,16 @@ Render frames with rounded corners. The value, given
as a float ranging from
square to fully circular. In other words, it gives the radius divided by half
the smaller side length. Defaults to @code{0.0}.
+@item extra_opts
+Pass extra libplacebo internal configuration options. These can be specified
+as a list of @var{key}=@var{value} pairs separated by ':'. The following
example
+shows how to configure a custom filter kernel ("EWA LanczosSharp") and use it
+to double the input image resolution:
+
+@example
+-vf
"libplacebo=w=iw*2:h=ih*2:extra_opts='upscaler=custom\:upscaler_preset=ewa_lanczos\:upscaler_blur=0.9812505644269356'"
+@end example
+
@item colorspace
@item color_primaries
@item color_trc
diff --git a/libavfilter/vf_libplacebo.c b/libavfilter/vf_libplacebo.c
index b9effdbad95..942c3210424 100644
--- a/libavfilter/vf_libplacebo.c
+++ b/libavfilter/vf_libplacebo.c
@@ -192,6 +192,7 @@ typedef struct LibplaceboContext {
int color_range;
int color_primaries;
int color_trc;
+ AVDictionary *extra_opts;
/* pl_render_params */
pl_options opts;
@@ -376,6 +377,7 @@ static int update_settings(AVFilterContext *ctx)
{
int err = 0;
LibplaceboContext *s = ctx->priv;
+ AVDictionaryEntry *e = NULL;
pl_options opts = s->opts;
int gamut_mode = s->gamut_mode;
uint8_t color_rgba[4];
@@ -505,6 +507,16 @@ static int update_settings(AVFilterContext *ctx)
RET(find_scaler(ctx, &opts->params.upscaler, s->upscaler, 0));
RET(find_scaler(ctx, &opts->params.downscaler, s->downscaler, 0));
RET(find_scaler(ctx, &opts->params.frame_mixer, s->frame_mixer, 1));
+
+#if PL_API_VER >= 309
+ while ((e = av_dict_get(s->extra_opts, "", e, AV_DICT_IGNORE_SUFFIX))) {
+ if (!pl_options_set_str(s->opts, e->key, e->value)) {
+ err = AVERROR(EINVAL);
+ goto fail;
+ }
+ }
+#endif
+
return 0;
fail:
@@ -1322,6 +1334,7 @@ static const AVOption libplacebo_options[] = {
{ "pad_crop_ratio", "ratio between padding and cropping when normalizing
SAR (0=pad, 1=crop)", OFFSET(pad_crop_ratio), AV_OPT_TYPE_FLOAT, {.dbl=0.0},
0.0, 1.0, DYNAMIC },
{ "fillcolor", "Background fill color", OFFSET(fillcolor),
AV_OPT_TYPE_STRING, {.str = "black"}, .flags = DYNAMIC },
{ "corner_rounding", "Corner rounding radius", OFFSET(corner_rounding),
AV_OPT_TYPE_FLOAT, {.dbl = 0.0}, 0.0, 1.0, .flags = DYNAMIC },
+ { "extra_opts", "Pass extra libplacebo-specific options using a
:-separated list of key=value pairs", OFFSET(extra_opts), AV_OPT_TYPE_DICT,
.flags = DYNAMIC },
{"colorspace", "select colorspace", OFFSET(colorspace), AV_OPT_TYPE_INT,
{.i64=-1}, -1, AVCOL_SPC_NB-1, DYNAMIC, "colorspace"},
{"auto", "keep the same colorspace", 0, AV_OPT_TYPE_CONST, {.i64=-1},
INT_MIN, INT_MAX, STATIC, "colorspace"},
--
2.41.0
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