if (!filter)
return 0;
- ret = av_malloc(sizeof(AVFilterContext));
+ ret = av_mallocz(sizeof(AVFilterContext));
ret->av_class = &avfilter_class;
ret->filter = filter;
ret->priv = av_mallocz(filter->priv_size);
ret->input_count = pad_count(filter->inputs);
+ if (ret->input_count) {
ret->input_pads = av_malloc(sizeof(AVFilterPad) * ret->input_count);
memcpy(ret->input_pads, filter->inputs, sizeof(AVFilterPad)*ret->input_count);
ret->inputs = av_mallocz(sizeof(AVFilterLink*) * ret->input_count);
+ }
ret->output_count = pad_count(filter->outputs);
+ if (ret->output_count) {
ret->output_pads = av_malloc(sizeof(AVFilterPad) * ret->output_count);
memcpy(ret->output_pads, filter->outputs, sizeof(AVFilterPad)*ret->output_count);
ret->outputs = av_mallocz(sizeof(AVFilterLink*) * ret->output_count);
+ }
return ret;
}