chunks

Raw PCM, one chunk per CaptureConfig.chunkDuration.

Empty when CaptureConfig.pcm is null. Can be collected once; a second collector fails with IllegalStateException (use shareIn to fan out). Chunks are queued until collected, up to PcmOutput.bufferedChunks, after which the oldest are dropped. The flow completes when the session stops, or fails with AudioCaptureException when the microphone fails.