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avfilter/avfiltergraph: Simplify adding filter to graph

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By reallocating the array of pointers to the AVFilterContexts
before allocating the new AVFilterContext one can avoid freeing
the new AVFilterContext in case the array could not be reallocated.

Also switch to av_realloc_array() while just at it.

Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
This commit is contained in:
Andreas Rheinhardt 2021-09-28 08:07:43 +02:00
parent 68815d6791
commit 22c4f33991
1 changed files with 5 additions and 7 deletions
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12
libavfilter/avfiltergraph.c
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@ -183,17 +183,15 @@ AVFilterContext *avfilter_graph_alloc_filter(AVFilterGraph *graph,
}
}
filters = av_realloc_array(graph->filters, graph->nb_filters + 1, sizeof(*filters));
if (!filters)
return NULL;
graph->filters = filters;
s = ff_filter_alloc(filter, name);
if (!s)
return NULL;
filters = av_realloc(graph->filters, sizeof(*filters) * (graph->nb_filters + 1));
if (!filters) {
avfilter_free(s);
return NULL;
}
graph->filters = filters;
graph->filters[graph->nb_filters++] = s;
s->graph = graph;