AC3_CHMODE_3F2R
} AC3ChannelMode;
+/** Dolby Surround mode */
+typedef enum AC3DolbySurroundMode {
+ AC3_DSURMOD_NOTINDICATED = 0,
+ AC3_DSURMOD_OFF,
+ AC3_DSURMOD_ON,
+ AC3_DSURMOD_RESERVED
+} AC3DolbySurroundMode;
+
+/** Dolby Surround EX mode */
+typedef enum AC3DolbySurroundEXMode {
+ AC3_DSUREXMOD_NOTINDICATED = 0,
+ AC3_DSUREXMOD_OFF,
+ AC3_DSUREXMOD_ON,
+ AC3_DSUREXMOD_PLIIZ
+} AC3DolbySurroundEXMode;
+
+/** Dolby Headphone mode */
+typedef enum AC3DolbyHeadphoneMode {
+ AC3_DHEADPHONMOD_NOTINDICATED = 0,
+ AC3_DHEADPHONMOD_OFF,
+ AC3_DHEADPHONMOD_ON,
+ AC3_DHEADPHONMOD_RESERVED
+} AC3DolbyHeadphoneMode;
+
+/** Preferred Stereo Downmix mode */
+typedef enum AC3PreferredStereoDownmixMode {
+ AC3_DMIXMOD_NOTINDICATED = 0,
+ AC3_DMIXMOD_LTRT,
+ AC3_DMIXMOD_LORO,
+ AC3_DMIXMOD_DPLII // reserved value in A/52, but used by encoders to indicate DPL2
+} AC3PreferredStereoDownmixMode;
+
typedef struct AC3BitAllocParameters {
int sr_code;
int sr_shift;
int surround_mix_level; ///< Surround mix level index
uint16_t channel_map;
int num_blocks; ///< number of audio blocks
+ int dolby_surround_mode;
/** @} */
/** @name Derived values