ffmpeg/libavfilter/avfilter.c

2  * filter layer
43 /** helper macros to get the in/out pad on the dst/src filter */
108     av_log(link->dst, AV_LOG_INFO, "auto-inserting filter '%s' "
109            "between the filter '%s' and the filter '%s'\n",
114         /* failed to link output filter to new filter */
119     /* re-hookup the link to the new destination filter we inserted */
133 int avfilter_config_links(AVFilterContext *filter)
138     for(i = 0; i < filter->input_count; i ++) {
139         AVFilterLink *link = filter->inputs[i];
147             av_log(filter, AV_LOG_INFO, "circular filter chain detected\n");
189             link->src ? link->src->filter->name : "",
190             link->dst ? link->dst->filter->name : "",
243  * forcing the source filter to do it? */
285     /* unreference the source picture if we're feeding the destination filter
352 int avfilter_register(AVFilter *filter)
357     registered_avfilters[next_registered_avfilter_idx++] = filter;
361 AVFilter **av_filter_next(AVFilter **filter)
363     return filter ? ++filter : &registered_avfilters[0];
382     AVFilterContext *filter = p;
383     return filter->filter->name;
393 AVFilterContext *avfilter_open(AVFilter *filter, const char *inst_name)
397     if (!filter)
403     ret->filter   = filter;
405     ret->priv     = av_mallocz(filter->priv_size);
407     ret->input_count  = pad_count(filter->inputs);
410         memcpy(ret->input_pads, filter->inputs, sizeof(AVFilterPad) * ret->input_count);
414     ret->output_count = pad_count(filter->outputs);
417         memcpy(ret->output_pads, filter->outputs, sizeof(AVFilterPad) * ret->output_count);
424 void avfilter_destroy(AVFilterContext *filter)
428     if(filter->filter->uninit)
429         filter->filter->uninit(filter);
431     for(i = 0; i < filter->input_count; i ++) {
432         if(filter->inputs[i])
433             filter->inputs[i]->src->outputs[filter->inputs[i]->srcpad] = NULL;
434         av_freep(&filter->inputs[i]);
436     for(i = 0; i < filter->output_count; i ++) {
437         if(filter->outputs[i])
438             filter->outputs[i]->dst->inputs[filter->outputs[i]->dstpad] = NULL;
439         av_freep(&filter->outputs[i]);
442     av_freep(&filter->name);
443     av_freep(&filter->input_pads);
444     av_freep(&filter->output_pads);
445     av_freep(&filter->inputs);
446     av_freep(&filter->outputs);
447     av_freep(&filter->priv);
448     av_free(filter);
451 int avfilter_init_filter(AVFilterContext *filter, const char *args, void *opaque)
455     if(filter->filter->init)
456         ret = filter->filter->init(filter, args, opaque);