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lavfi/vf_libplacebo: add nb_inputs option

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To control the number of inputs.
This commit is contained in:
Niklas Haas 2023-06-15 13:36:20 +02:00
parent 9049ea6763
commit f998a618ba
2 changed files with 19 additions and 11 deletions
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5
doc/filters.texi
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@ -16224,6 +16224,11 @@ to preserve the source colorimetry and size as best as it can, but it will
apply any embedded film grain, dolby vision metadata or anamorphic SAR present
in source frames.
@table @option
@item inputs
Set the number of inputs. This can be used, alongside the @code{idx} variable,
to allow placing/blending multiple inputs inside the output frame. This
effectively enables functionality similar to @ref{hstack}, @ref{overlay}, etc.
@item w
@item h
Set the output video dimension expression. Default values are @code{iw} and

25
libavfilter/vf_libplacebo.c
View File

@ -502,6 +502,7 @@ static int parse_shader(AVFilterContext *avctx, const void *shader, size_t len)
}
static void libplacebo_uninit(AVFilterContext *avctx);
static int libplacebo_config_input(AVFilterLink *inlink);
static int libplacebo_init(AVFilterContext *avctx)
{
@ -530,6 +531,17 @@ static int libplacebo_init(AVFilterContext *avctx)
s->out_format = AV_PIX_FMT_NONE;
}
for (int i = 0; i < s->nb_inputs; i++) {
AVFilterPad pad = {
.name = av_asprintf("input%d", i),
.type = AVMEDIA_TYPE_VIDEO,
.config_props = &libplacebo_config_input,
};
if (!pad.name)
return AVERROR(ENOMEM);
RET(ff_append_inpad_free_name(avctx, &pad));
}
RET(update_settings(avctx));
RET(av_expr_parse(&s->crop_x_pexpr, s->crop_x_expr, var_names,
NULL, NULL, NULL, NULL, 0, s));
@ -665,7 +677,6 @@ static int init_vulkan(AVFilterContext *avctx, const AVVulkanDeviceContext *hwct
}
/* Initialize inputs */
s->nb_inputs = 1;
s->inputs = av_calloc(s->nb_inputs, sizeof(*s->inputs));
if (!s->inputs)
return AVERROR(ENOMEM);
@ -1252,6 +1263,7 @@ fail:
#define DYNAMIC (STATIC | AV_OPT_FLAG_RUNTIME_PARAM)
static const AVOption libplacebo_options[] = {
{ "inputs", "Number of inputs", OFFSET(nb_inputs), AV_OPT_TYPE_INT, {.i64 = 1}, 1, INT_MAX, .flags = STATIC },
{ "w", "Output video frame width", OFFSET(w_expr), AV_OPT_TYPE_STRING, {.str = "iw"}, .flags = STATIC },
{ "h", "Output video frame height", OFFSET(h_expr), AV_OPT_TYPE_STRING, {.str = "ih"}, .flags = STATIC },
{ "fps", "Output video frame rate", OFFSET(fps_string), AV_OPT_TYPE_STRING, {.str = "none"}, .flags = STATIC },
@ -1443,14 +1455,6 @@ static const AVOption libplacebo_options[] = {
AVFILTER_DEFINE_CLASS(libplacebo);
static const AVFilterPad libplacebo_inputs[] = {
{
.name = "default",
.type = AVMEDIA_TYPE_VIDEO,
.config_props = &libplacebo_config_input,
},
};
static const AVFilterPad libplacebo_outputs[] = {
{
.name = "default",
@ -1467,10 +1471,9 @@ const AVFilter ff_vf_libplacebo = {
.uninit = &libplacebo_uninit,
.activate = &libplacebo_activate,
.process_command = &libplacebo_process_command,
FILTER_INPUTS(libplacebo_inputs),
FILTER_OUTPUTS(libplacebo_outputs),
FILTER_QUERY_FUNC(libplacebo_query_format),
.priv_class = &libplacebo_class,
.flags_internal = FF_FILTER_FLAG_HWFRAME_AWARE,
.flags = AVFILTER_FLAG_HWDEVICE,
.flags = AVFILTER_FLAG_HWDEVICE | AVFILTER_FLAG_DYNAMIC_INPUTS,
};