+ int surround_mix_level_ltrt; ///< Surround mix level index for Lt/Rt (ltrtsurmixlev)
+ int lfe_mix_level_exists; ///< indicates if lfemixlevcod is specified (lfemixlevcode)
+ int lfe_mix_level; ///< LFE mix level index (lfemixlevcod)
+ int eac3; ///< indicates if current frame is E-AC-3
+ int dolby_surround_mode; ///< dolby surround mode (dsurmod)
+ int dolby_surround_ex_mode; ///< dolby surround ex mode (dsurexmod)
+ int dolby_headphone_mode; ///< dolby headphone mode (dheadphonmod)
+///@}
+
+///@name Frame syntax parameters
+ int snr_offset_strategy; ///< SNR offset strategy (snroffststr)
+ int block_switch_syntax; ///< block switch syntax enabled (blkswe)
+ int dither_flag_syntax; ///< dither flag syntax enabled (dithflage)
+ int bit_allocation_syntax; ///< bit allocation model syntax enabled (bamode)
+ int fast_gain_syntax; ///< fast gain codes enabled (frmfgaincode)
+ int dba_syntax; ///< delta bit allocation syntax enabled (dbaflde)
+ int skip_syntax; ///< skip field syntax enabled (skipflde)
+ ///@}
+
+///@name Standard coupling
+ int cpl_in_use[AC3_MAX_BLOCKS]; ///< coupling in use (cplinu)
+ int cpl_strategy_exists[AC3_MAX_BLOCKS];///< coupling strategy exists (cplstre)
+ int channel_in_cpl[AC3_MAX_CHANNELS]; ///< channel in coupling (chincpl)
+ int phase_flags_in_use; ///< phase flags in use (phsflginu)
+ int phase_flags[AC3_MAX_CPL_BANDS]; ///< phase flags (phsflg)
+ int num_cpl_bands; ///< number of coupling bands (ncplbnd)
+ uint8_t cpl_band_sizes[AC3_MAX_CPL_BANDS]; ///< number of coeffs in each coupling band
+ int firstchincpl; ///< first channel in coupling
+ int first_cpl_coords[AC3_MAX_CHANNELS]; ///< first coupling coordinates states (firstcplcos)
+ int cpl_coords[AC3_MAX_CHANNELS][AC3_MAX_CPL_BANDS]; ///< coupling coordinates (cplco)