DynamicRangeControl  270 libavcodec/aac.h     DynamicRangeControl che_drc;
DynamicRangeControl 2200 libavcodec/aacdec.c static int decode_drc_channel_exclusions(DynamicRangeControl *che_drc,
DynamicRangeControl 2219 libavcodec/aacdec.c static int decode_dynamic_range(DynamicRangeControl *che_drc,