AC3ENC_OPT_ON    1967 libavcodec/ac3enc.c             opt->original = AC3ENC_OPT_ON;
AC3ENC_OPT_ON      72 libavcodec/ac3enc_opts_template.c {"channel_coupling",   "Channel Coupling",   OFFSET(channel_coupling),   AV_OPT_TYPE_INT, {.i64 = AC3ENC_OPT_AUTO }, AC3ENC_OPT_AUTO, AC3ENC_OPT_ON, AC3ENC_PARAM, "channel_coupling"},