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avfilter/vf_avgblur: add support for commands

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This commit is contained in:
Paul B Mahol 2019-10-06 15:44:20 +02:00
parent da9337c911
commit 66d45af13c
2 changed files with 24 additions and 0 deletions
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7
doc/filters.texi
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@ -6211,6 +6211,13 @@ Set vertical radius size, if zero it will be same as @code{sizeX}.
Default is @code{0}.
@end table
@subsection Commands
This filter supports same commands as options.
The command accepts the same syntax of the corresponding option.
If the specified expression is not valid, it is kept at its current
value.
@section bbox
Compute the bounding box for the non-black pixels in the input frame

17
libavfilter/vf_avgblur.c
View File

@ -287,6 +287,22 @@ static int filter_frame(AVFilterLink *inlink, AVFrame *in)
return ff_filter_frame(outlink, out);
}
static int process_command(AVFilterContext *ctx, const char *cmd, const char *args,
char *res, int res_len, int flags)
{
AverageBlurContext *s = ctx->priv;
int ret = 0;
if ( !strcmp(cmd, "sizeX") || !strcmp(cmd, "sizeY")
|| !strcmp(cmd, "planes")) {
av_opt_set(s, cmd, args, 0);
} else {
ret = AVERROR(ENOSYS);
}
return ret;
}
static av_cold void uninit(AVFilterContext *ctx)
{
AverageBlurContext *s = ctx->priv;
@ -322,4 +338,5 @@ AVFilter ff_vf_avgblur = {
.inputs = avgblur_inputs,
.outputs = avgblur_outputs,
.flags = AVFILTER_FLAG_SUPPORT_TIMELINE_GENERIC | AVFILTER_FLAG_SLICE_THREADS,
.process_command = process_command,
};