- * \brief read one block from stream
- * \param gb contains stream data
- * \param block where data is written to
- * \param scan array containing the mapping stream address -> block position
- * \param quant quantization factors
+ * @brief read one block from stream
+ * @param gb contains stream data
+ * @param block where data is written to
+ * @param scan array containing the mapping stream address -> block position
+ * @param quant quantization factors
+ * @return 0 means the block is not coded, < 0 means an error occurred.