int surround_mix_level; ///< Surround mix level index
uint16_t channel_map;
int num_blocks; ///< number of audio blocks
-#if AV_HAVE_INCOMPATIBLE_LIBAV_ABI
int dolby_surround_mode;
-#endif
/** @} */
/** @name Derived values
uint16_t frame_size;
uint64_t channel_layout;
/** @} */
-#if !AV_HAVE_INCOMPATIBLE_LIBAV_ABI
- int dolby_surround_mode;
-#endif
} AC3HeaderInfo;
typedef enum {