ff_decode_sbr_extension 2334 libavcodec/aacdec.c res = ff_decode_sbr_extension(ac, &che->sbr, gb, crc_flag, cnt, elem_type); ff_decode_sbr_extension 43 libavcodec/aacsbr.h int ff_decode_sbr_extension(AACContext *ac, SpectralBandReplication *sbr,