Implemented command line SDR integration

TODO:
- Add commands to allow changing Freq

bot.py

@@ -1,4 +1,5 @@
 import os
+import subprocess
 import discord
 import sound
 from discord.ext import commands
@@ -18,6 +19,12 @@ class Bot(commands.Bot):
         self.Default_Mention_Group = kwargs['Mention_Group']
         self.Devices_List = sound.query_devices().items()
 
+        self.sdr_process = None
+        self.system_os_type = None
+
+        # Set linux or windows
+        self.check_os_type()
+
         self.add_commands()
 
         self.check_for_modules()
@@ -47,6 +54,8 @@ class Bot(commands.Bot):
                 voice_connection = await channel.connect()
                 voice_connection.play(discord.PCMAudio(stream))
 
+                self.start_sdr()
+
                 await self.change_presence(activity=discord.Activity(type=discord.ActivityType.listening,
                                                                      name="the airwaves"),
                                            status=discord.Status.online)
@@ -99,3 +108,20 @@ class Bot(commands.Bot):
         except Exception as e:
             print(e)
             return False
+
+    def check_os_type(self):
+        if os.name == 'nt':
+            self.system_os_type = 'Windows'
+        else:
+            self.system_os_type = 'Linux'
+
+    def start_sdr(self, freq="104.7M", gain=40, squelch=0, sample_rate="200k", mode="wbfm"):
+        possible_modes = ['wbfm', 'fm']
+        if type(freq) == str:
+            # Single freq sent
+            if self.sdr_process:
+                self.sdr_process.terminate()
+
+            self.sdr_process = subprocess.Popen(["rtl_fm", f"-M {mode}", f"-f {freq}", f"-g {gain}",
+                                                 f"-l {squelch}", f"-s {sample_rate}",
+                                                 f"| play -t raw -r 32k -es -b 16 -c 1 -V1 -"], shell=True)