From: Niklas Haas <g...@haasn.dev>
For use in diagnostic code e.g. avfilter_graph_dump().
---
libavfilter/avfilter.c | 2 ++
libavfilter/filters.h | 6 ++++++
libavfilter/graphparser.c | 6 ++++++
3 files changed, 14 insertions(+)
diff --git a/libavfilter/avfilter.c b/libavfilter/avfilter.c
index e732556ffa..b434724694 100644
--- a/libavfilter/avfilter.c
+++ b/libavfilter/avfilter.c
@@ -825,11 +825,13 @@ void avfilter_free(AVFilterContext *filter)
for (i = 0; i < filter->nb_inputs; i++) {
free_link(filter->inputs[i]);
+ av_freep(&filter->input_pads[i].label);
if (filter->input_pads[i].flags & AVFILTERPAD_FLAG_FREE_NAME)
av_freep(&filter->input_pads[i].name);
}
for (i = 0; i < filter->nb_outputs; i++) {
free_link(filter->outputs[i]);
+ av_freep(&filter->output_pads[i].label);
if (filter->output_pads[i].flags & AVFILTERPAD_FLAG_FREE_NAME)
av_freep(&filter->output_pads[i].name);
}
diff --git a/libavfilter/filters.h b/libavfilter/filters.h
index 654aed5c9e..751a125f52 100644
--- a/libavfilter/filters.h
+++ b/libavfilter/filters.h
@@ -43,6 +43,12 @@ struct AVFilterPad {
*/
const char *name;
+ /**
+ * Parsed label for this filter pad in the filter graph, or NULL if
+ * anonymous or unknown.
+ */
+ const char *label;
+
/**
* AVFilterPad type.
*/
diff --git a/libavfilter/graphparser.c b/libavfilter/graphparser.c
index a23e26d2e3..9f8dd3190a 100644
--- a/libavfilter/graphparser.c
+++ b/libavfilter/graphparser.c
@@ -564,6 +564,12 @@ int
avfilter_graph_segment_create_filters(AVFilterGraphSegment *seg, int flags)
}
}
+ /* Set all filter pad labels to their corresponding parsed labels
*/
+ for (size_t i = 0; i < FFMIN(p->nb_inputs, p->filter->nb_inputs);
i++)
+ p->filter->input_pads[i].label =
av_strdup(p->inputs[i]->label);
+ for (size_t i = 0; i < FFMIN(p->nb_outputs,
p->filter->nb_outputs); i++)
+ p->filter->output_pads[i].label =
av_strdup(p->outputs[i]->label);
+
av_freep(&p->filter_name);
av_freep(&p->instance_name);
--
2.47.0
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