AVFilterContext *dst, unsigned dstpad)
{
AVFilterLink *link;
- int *fmts[2], i, j;
if(src->output_count <= srcpad || dst->input_count <= dstpad ||
src->outputs[srcpad] || dst->inputs[dstpad])
link->srcpad = srcpad;
link->dstpad = dstpad;
link->cur_pic = NULL;
+ link->format = -1;
+
+ return 0;
+}
+
+int avfilter_config_link(AVFilterLink *link)
+{
+ int *fmts[2], i, j;
+ int (*config_link)(AVFilterLink *);
+
+ if(!link)
+ return 0;
/* find a format both filters support - TODO: auto-insert conversion filter */
link->format = -1;
- if(src->output_pads[srcpad].query_formats)
- fmts[0] = src->output_pads[srcpad].query_formats(link);
+ if(link->src->output_pads[link->srcpad].query_formats)
+ fmts[0] = link->src->output_pads[link->srcpad].query_formats(link);
else
fmts[0] = avfilter_default_query_output_formats(link);
- fmts[1] = dst->input_pads[dstpad].query_formats(link);
+ fmts[1] = link->dst->input_pads[link->dstpad].query_formats(link);
for(i = 0; fmts[0][i] != -1; i ++)
for(j = 0; fmts[1][j] != -1; j ++)
if(fmts[0][i] == fmts[1][j]) {
format_done:
av_free(fmts[0]);
av_free(fmts[1]);
- if(link->format == -1) {
- /* failed to find a format. fail at creating the link */
- av_free(link);
- src->outputs[srcpad] = NULL;
- dst->inputs[dstpad] = NULL;
+ if(link->format == -1)
return -1;
- }
- if (src->output_pads[srcpad].config_props)
- src->output_pads[srcpad].config_props(link);
- else
- avfilter_default_config_output_link(link);
+ if(!(config_link = link->src->output_pads[link->srcpad].config_props))
+ config_link = avfilter_default_config_output_link;
+ if(config_link(link))
+ return -1;
- if (dst->input_pads[dstpad].config_props)
- dst->input_pads[dstpad].config_props(link);
+ if(!(config_link = link->dst->input_pads[link->dstpad].config_props))
+ config_link = avfilter_default_config_input_link;
+ if(config_link(link))
+ return -1;
return 0;
}