bool_t ms_filter_desc_implements_interface(MSFilterDesc *desc, MSFilterInterfaceId id){
MSFilterMethod *methods=desc->methods;
if (!methods) return FALSE;
for(;methods->id!=0;methods++){
unsigned int fid=MS_FILTER_METHOD_GET_FID(methods->id);
if (fid==id) return TRUE;
}
return FALSE;
}
int ms_filter_call_method(MSFilter *f, unsigned int id, void *arg){
MSFilterMethod *methods=f->desc->methods;
int i;
unsigned int magic=MS_FILTER_METHOD_GET_FID(id);
if (magic!=MS_FILTER_BASE_ID && magic!=f->desc->id) {
ms_fatal("Method type checking failed when calling %u on filter %s",id,f->desc->name);
return -1;
}
for(i=0;methods!=NULL && methods[i].method!=NULL; i++){
unsigned int mm=MS_FILTER_METHOD_GET_FID(methods[i].id);
if (mm!=f->desc->id && mm!=MS_FILTER_BASE_ID) {
ms_fatal("Bad method definition on filter %s. fid=%u , mm=%u",f->desc->name,f->desc->id,mm);
return -1;
}
if (methods[i].id==id){
return methods[i].method(f,arg);
}
}
if (magic!=MS_FILTER_BASE_ID) ms_error("no such method on filter %s",f->desc->name);
return -1;
}
