#!/bin/bash
# cqrlog voice keyer script
# paplay can handle common audio formats such as mp3, wav, etc
# let the shell expand $1 so it finds any extension (.mp3, .wav, etc)
# use echo since NO pathname expansion takes place with variable assignment 
# involving only literals or references to other variables, but it does 
# in command substition 
FILE=$(echo ~/.config/cqrlog/voice_keyer/${1}.*)
RC_MOD="2"                 # rigctl model id (hamlib net rigctl
RC_DEV="localhost:4532"    # rigctl device
PA_SINK="TxCable"          # portaudio sink for my tx audio

if [ -r "$FILE" ]
then
    echo "Found "$FILE

    # ask the rig what it's PTT state is
    r=$(rigctl -m $RC_MOD -r $RC_DEV t)

    # we expect the answer to be 0 for RX 
    if [ "$r" = "0" ]
    then
       echo "Rigctl is up"
    else
       echo "Rigctl is NOT up -- exiting"
       exit 1
    fi

    # see if another copy of paplay is running
    p=$(pidof paplay)

    # if another copy of paplay is running, assume it's ours
    if [ -z "$p" ]
    then
       echo "No other copy is playing"
    else
       echo "Another copy is playing -- exiting"
       exit 1
    fi

   # PTT settings: ‘0’ (RX), ‘1’ (TX), ‘2’ (TX mic), or ‘3’ (TX data)
   echo "PTT on"
   rigctl -m $RC_MOD -r $RC_DEV T 2

   # Note: pihpsdr Mic Lvl is high during this playback
   # Note: --volume=N doesn't seem to do anything (N=0..65536)
   echo "Play"
   paplay --device $PA_SINK --volume=65535 $FILE

   echo "PTT off"
   rigctl -m $RC_MOD -r $RC_DEV T 0

fi