AUD_RDS_LINES
int rds_bpl = cx88_sram_channels[SRAM_CH27].fifo_size / AUD_RDS_LINES;
unsigned int bpl = srch->fifo_size / AUD_RDS_LINES;
unsigned int sample_count = spl * (AUD_RDS_LINES - 1);
offset = offset % (AUD_RDS_LINES * bpl);