AC3_CHMAP_R       254 libavcodec/ac3tab.c     AC3_CHMAP_L |               AC3_CHMAP_R, // FIXME Ch1+Ch2
AC3_CHMAP_R       256 libavcodec/ac3tab.c     AC3_CHMAP_L |               AC3_CHMAP_R,
AC3_CHMAP_R       257 libavcodec/ac3tab.c     AC3_CHMAP_L | AC3_CHMAP_C | AC3_CHMAP_R,
AC3_CHMAP_R       258 libavcodec/ac3tab.c     AC3_CHMAP_L |               AC3_CHMAP_R |                   AC3_CHMAP_C_SUR,
AC3_CHMAP_R       259 libavcodec/ac3tab.c     AC3_CHMAP_L | AC3_CHMAP_C | AC3_CHMAP_R |                   AC3_CHMAP_C_SUR,
AC3_CHMAP_R       260 libavcodec/ac3tab.c     AC3_CHMAP_L |               AC3_CHMAP_R | AC3_CHMAP_L_SUR |                  AC3_CHMAP_R_SUR,
AC3_CHMAP_R       261 libavcodec/ac3tab.c     AC3_CHMAP_L | AC3_CHMAP_C | AC3_CHMAP_R | AC3_CHMAP_L_SUR |                  AC3_CHMAP_R_SUR