+ void reset_resampler(DeviceSpec device_spec);
+ void reset_meters();
+
+ // Add audio (or silence) to the given device's queue. Can return false if
+ // the lock wasn't successfully taken; if so, you should simply try again.
+ // (This is to avoid a deadlock where a card hangs on the mutex in add_audio()
+ // while we are trying to shut it down from another thread that also holds
+ // the mutex.) frame_length is in TIMEBASE units.
+ bool add_audio(DeviceSpec device_spec, const uint8_t *data, unsigned num_samples, bmusb::AudioFormat audio_format, int64_t frame_length);
+ bool add_silence(DeviceSpec device_spec, unsigned samples_per_frame, unsigned num_frames, int64_t frame_length);
+
+ // If a given device is offline for whatever reason and cannot deliver audio
+ // (by means of add_audio() or add_silence()), you can call put it in silence mode,
+ // where it will be taken to only output silence. Note that when taking it _out_
+ // of silence mode, the resampler will be reset, so that old audio will not
+ // affect it. Same true/false behavior as add_audio().
+ bool silence_card(DeviceSpec device_spec, bool silence);