static int parse_inputs(const char **buf, AVFilterInOut **curr_inputs,
AVFilterInOut **open_outputs, AVClass *log_ctx)
{
int pad = 0;
while (**buf == '[') {
char *name = parse_link_name(buf, log_ctx);
AVFilterInOut *match;
if (!name)
return AVERROR(EINVAL);
/* First check if the label is not in the open_outputs list */
match = extract_inout(name, open_outputs);
if (match) {
av_free(name);
} else {
/* Not in the list, so add it as an input */
if (!(match = av_mallocz(sizeof(AVFilterInOut))))
return AVERROR(ENOMEM);
match->name = name;
match->pad_idx = pad;
}
insert_inout(curr_inputs, match);
*buf += strspn(*buf, WHITESPACES);
pad++;
}
return pad;
}
static int parse_outputs(const char **buf, AVFilterInOut **curr_inputs,
AVFilterInOut **open_inputs,
AVFilterInOut **open_outputs, void *log_ctx)
{
int ret, pad = 0;
while (**buf == '[') {
char *name = parse_link_name(buf, log_ctx);
AVFilterInOut *match;
AVFilterInOut *input = *curr_inputs;
if (!name)
return AVERROR(EINVAL);
if (!input) {
av_log(log_ctx, AV_LOG_ERROR,
"No output pad can be associated to link label '%s'.\n", name);
av_free(name);
return AVERROR(EINVAL);
}
*curr_inputs = (*curr_inputs)->next;
/* First check if the label is not in the open_inputs list */
match = extract_inout(name, open_inputs);
if (match) {
if ((ret = link_filter(input->filter_ctx, input->pad_idx,
match->filter_ctx, match->pad_idx, log_ctx)) < 0) {
av_free(name);
return ret;
}
av_freep(&match->name);
av_freep(&name);
av_freep(&match);
av_freep(&input);
} else {
/* Not in the list, so add the first input as a open_output */
input->name = name;
insert_inout(open_outputs, input);
}
*buf += strspn(*buf, WHITESPACES);
pad++;
}
return pad;
}