+ /**
+ * Returns the number of processed samples. Newly generated annotations will
+ * have sample numbers greater than this.
+ *
+ * If include_processing is true, this number will include the ones being
+ * currently processed (in case the decoder stack is running). In this case,
+ * newly generated annotations will have sample numbers smaller than this.
+ */
+ int64_t get_decoded_sample_count(uint32_t segment_id,
+ bool include_processing) const;