freeswitch1.6 Recording function

Record_session when recording, if the saved file does not have a suffix,
The Mod_native_file module is used, and audio is not encoded, and the received sound data is saved directly to two files.
The file name has in, which represents the sound that was received by the caller.
The file name is out and represents the voice to the caller.

View supported audio file commands

Freeswitch@pc-201705271510>show file
file,l16,mod_native_file
file,pcma,mod_native_file
file, Pcmu,mod_native_file
file,proxy,mod_native_file
file,proxy-vid,mod_native_file
file,SPEEX,mod_ Native_file
file,vp8,mod_native_file
file,vp9,mod_native_file
file,adpcm,mod_sndfile
File,aiff , Mod_sndfile
file,al,mod_sndfile
file,alaw,mod_sndfile
file,au,mod_sndfile
file,avr,mod_ Sndfile
file,caf,mod_sndfile
file,file,mod_dptools
file,file_string,mod_dptools
file,gsm, Mod_sndfile .....

As in DialPlan increase

<action application= "record_session" Data= "$${recordings_dir}/${caller_id_number}-${strftime (%Y-%m-%d-%H-%M-% S)} "/>

I only recorded the voice of the caller.

<action application= "Set" Data= "Record_read_only=true"/>

Only the voice that is transmitted to the caller is recorded.

<action application= "Set" Data= "Record_write_only=true"/>

Record_write_only and Record_read_only are also set to true to record only read

Using Mod_native_file module recording, Record_answer_req, Record_bridge_req, record_append, etc., have become invalid. See the Switch_ivr_record_session function to clear the flags.

if (ext = strrchr (file, '. '))) {
     ...

    } else {
        int tflags = 0;

        ......

        if ((Flags & Smbf_write_stream)) {
            tflags |= smbf_tap_native_write;
        }

        if ((Flags & Smbf_read_stream)) {
            tflags |= smbf_tap_native_read;
        }

        **flags = tflags;**
    }