Prepare for 37c3

.gitignore

@@ -2,11 +2,15 @@
 /.idea/misc.xml
 /.idea/workspace.xml
 /venv
-/*.wav
-certs/*-key.pem
-certs/*.p12
+*~
+*.pcm
 __pycache__
 *.pyc
+*.wav
+certs/*-key.pem
+certs/*.p12
+certs/old
+.DS_Store
 
 .gitsecret/keys/random_seed
 !*.secret

c3lingo_mumble/play_wav.py

@@ -1,5 +1,7 @@
 #!/usr/bin/env python3
-
+import audioop
+import logging
+import math
 import sys
 import time
 import wave
@@ -8,10 +10,22 @@
 import pymumble_py3
 
 
-def play_wav(server_args, channelname, file):
+def dBFS(value):
+    if value < 1:
+        value = 1
+    return 20 * math.log10(value / 32767) + 3
+
+
+def volume(buffer):
+    return dBFS(audioop.rms(buffer, 2))
+
+
+def play_wav(server_args, channelname, file, level):
     mumble = pymumble_py3.Mumble(**server_args)
+    mumble.set_receive_sound(True)
     mumble.start()
     mumble.is_ready()
+    log = logging.getLogger('play_wav')
 
     if not mumble.is_alive():
         raise Exception(f'Connection to "{server_args["host"]}" failed')
@@ -34,7 +48,13 @@ def play_wav(server_args, channelname, file):
                 start = time.perf_counter()
                 data = wf.readframes(chunk)
                 while len(data) > 0:
-                    mumble.sound_output.add_sound(data)
+                    v = volume(data)
+                    log.debug(f'Seconds to send: {mumble.sound_output.get_buffer_size():5.1f}s, volume: {v:5.1f} dbFS')
+                    if v > level:
+                        mumble.sound_output.add_sound(data)
+                        time.sleep(mumble.sound_output.get_buffer_size() * 0.9)
+                    else:
+                        log.debug(f'Skipping chunk because volume {v:5.1f} dBFS is below {level:3.0f} dBFS')
                     data = wf.readframes(chunk)
             now = time.perf_counter()
             elapsed = now - start
@@ -62,21 +82,27 @@ def play_wav(server_args, channelname, file):
                             'debug': False,
                         },
                         'channel': None,
-                        'loop': True
+                        'loop': True,
+                        'level': -999
                     })
     c = config.get_config()
     for k in ('file', 'channel'):
-        if k not in c:
+        if k not in c or c[k] is None:
             print('Missing required parameter --{}'.format(k))
             sys.exit(64)
     for k in ('host',):
-        if k not in c['mumble-server']:
+        if k not in c['mumble-server'] or c['mumble-server'][k] is None:
             print('Missing required parameter --{}'.format(k))
             sys.exit(64)
-    print('Playing \"{}\" on channel \"{}\" at {}'
-          .format(c['file'], c['channel'], c['mumble-server']['host']))
+    lh = logging.StreamHandler(stream=sys.stderr)
+    lh.setLevel(logging.DEBUG if c['mumble-server']['debug'] else logging.INFO)
+    lh.setFormatter(logging.Formatter('%(asctime)s-%(name)s-%(levelname)s-%(message)s'))
+    logging.root.addHandler(lh)
+    log = logging.getLogger('play_wav')
+    log.setLevel(logging.INFO)
+    log.info(f"Playing \"c['file']\" on channel \"c['channel']\" at c['mumble-server']['host']")
     try:
-        play_wav(c['mumble-server'], c['channel'], c['file'])
+        play_wav(c['mumble-server'], c['channel'], c['file'], c['level'])
     except Exception as e:
         print(f'Unable to play file: {e.__class__.__name__}: {e}', file=sys.stderr)
 

c3lingo_mumble/send_stdin.py

@@ -5,6 +5,8 @@
 selected Mumble channels.
 """
 import argparse
+import audioop
+import math
 import os
 import re
 import struct
@@ -23,14 +25,26 @@ class AppError(Exception):
     pass
 
 
+def dBFS(value):
+    if value < 1:
+        value = 1
+    return 20 * math.log10(value / 32767) + 3
+
+
+def volume(buffer):
+    return dBFS(audioop.rms(buffer, 2))
+
+
 class MumbleSender:
-    def __init__(self, server_args, channelname):
+    def __init__(self, server_args, channelname, level=-999):
         self.server_args = server_args
         self.channel = channelname
+        self.level = level
         self.count = 0
 
         mumble = pymumble_py3.Mumble(**server_args)
         self.mumble = mumble
+        mumble.set_receive_sound(True)
         mumble.start()
         mumble.is_ready()
 
@@ -48,7 +62,9 @@ def __init__(self, server_args, channelname):
             raise AppError(f'Unable to move to channel "{channelname}"')
 
     def send(self, data):
-        self.mumble.sound_output.add_sound(data)
+        v = volume(data)
+        if self.mumble.sound_output is not None and v > self.level:
+            self.mumble.sound_output.add_sound(data)
         self.count += 1
 
 
@@ -58,8 +74,9 @@ def __init__(self, config):
         self.mumbles = {}
         self.maxchannels = len(config)
         for (index, params) in enumerate(self.config):
-            self.mumbles[index] = MumbleSender(params['server'], params['channel'])
-            print(f'Connected {index} to {params["server"]["host"]}/{params["channel"]}')
+            level = params['level'] if 'level' in params else -999
+            self.mumbles[index] = MumbleSender(params['server'], params['channel'], level)
+            print(f'Connected {index} to {params["server"]["host"]}/{params["channel"]}, minimum level {level}')
 
     def start(self):
         self.thread = threading.Thread(target=self.send, daemon=True)
@@ -84,6 +101,7 @@ def send(self):
             streams = self.split_channels(b, self.maxchannels)
             for index in range(len(self.config)):
                 self.mumbles[index].send(streams[index])
+            time.sleep(0.005)
 
 
 if __name__ == "__main__":

certs/Saal_1-0-cert.pem

@@ -0,0 +1,30 @@
+-----BEGIN CERTIFICATE-----
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+-----END CERTIFICATE-----

certs/Saal_1-1-cert.pem

@@ -0,0 +1,30 @@
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+-----END CERTIFICATE-----

certs/Saal_1-2-cert.pem

@@ -0,0 +1,30 @@
+-----BEGIN CERTIFICATE-----
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+-----END CERTIFICATE-----

certs/Saal_Grace-0-cert.pem

@@ -0,0 +1,31 @@
+-----BEGIN CERTIFICATE-----
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+-----END CERTIFICATE-----

certs/Saal_Grace-1-cert.pem

@@ -0,0 +1,31 @@
+-----BEGIN CERTIFICATE-----
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certs/Saal_Grace-2-cert.pem

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certs/Saal_Zuse-0-cert.pem

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