how to configure voice data which from bt to PCM format ?

[zhou88mang]

I successfully implemented the Bluetooth function using btstack + esp-hosted, but there was one problem, i set BR/EDR Sync(SCO/eSCO) default datapath PCM .By measuring the output pin of the pcm, I found that the format of these signals is i2s format , but the signal I really want is PCM format, is there any way to configure the format of these output signals?