std::shared_ptr<AVFrame> audio_filter::poll(int output_pad_id){return impl_->poll(output_pad_id);}
std::wstring audio_filter::filter_str() const{return u16(impl_->filtergraph_);}
std::vector<spl::shared_ptr<AVFrame>> audio_filter::poll_all(int output_pad_id)
std::shared_ptr<AVFrame> audio_filter::poll(int output_pad_id){return impl_->poll(output_pad_id);}
std::wstring audio_filter::filter_str() const{return u16(impl_->filtergraph_);}
std::vector<spl::shared_ptr<AVFrame>> audio_filter::poll_all(int output_pad_id)