}
private:
+ void configure_card(unsigned card_index, const QSurfaceFormat &format, CaptureInterface *capture);
void bm_frame(unsigned card_index, uint16_t timecode,
FrameAllocator::Frame video_frame, size_t video_offset, VideoFormat video_format,
FrameAllocator::Frame audio_frame, size_t audio_offset, uint16_t audio_format);