ff_dca_set_channel_layout 2361 libavcodec/dca_core.c     if (!ff_dca_set_channel_layout(avctx, s->ch_remap, s->request_mask))
ff_dca_set_channel_layout 1410 libavcodec/dca_xll.c     if (!ff_dca_set_channel_layout(avctx, ch_remap, request_mask))
ff_dca_set_channel_layout   68 libavcodec/dcadec.h int ff_dca_set_channel_layout(AVCodecContext *avctx, int *ch_remap, int dca_mask);