static int link_filter_inouts(AVFilterContext *filt_ctx,
AVFilterInOut **curr_inputs,
AVFilterInOut **open_inputs, void *log_ctx)
{
int pad, ret;
for (pad = 0; pad < filt_ctx->nb_inputs; pad++) {
AVFilterInOut *p = *curr_inputs;
if (p) {
*curr_inputs = (*curr_inputs)->next;
p->next = NULL;
} else if (!(p = av_mallocz(sizeof(*p))))
return AVERROR(ENOMEM);
if (p->filter_ctx) {
ret = link_filter(p->filter_ctx, p->pad_idx, filt_ctx, pad, log_ctx);
av_freep(&p->name);
av_freep(&p);
if (ret < 0)
return ret;
} else {
p->filter_ctx = filt_ctx;
p->pad_idx = pad;
append_inout(open_inputs, &p);
}
}
if (*curr_inputs) {
av_log(log_ctx, AV_LOG_ERROR,
"Too many inputs specified for the \"%s\" filter.\n",
filt_ctx->filter->name);
return AVERROR(EINVAL);
}
pad = filt_ctx->nb_outputs;
while (pad--) {
AVFilterInOut *currlinkn = av_mallocz(sizeof(AVFilterInOut));
if (!currlinkn)
return AVERROR(ENOMEM);
currlinkn->filter_ctx = filt_ctx;
currlinkn->pad_idx = pad;
insert_inout(curr_inputs, currlinkn);
}
return 0;
}
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_free(match->name);
av_free(name);
av_free(match);
av_free(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;
}
