Make gen_sound work under python3

diff --git a/tools/gen_sound.py b/tools/gen_sound.py
index 6e524e850f05fa1660126dbd161f2ace1bb62b4d..db37d8267325d187ed9ffdfce8ec5c861e8be35a 100644 (file)
--- a/tools/gen_sound.py
+++ b/tools/gen_sound.py
@@ -17,26 +17,26 @@ DEFAULT_VOL = 95
 def gen_sine(freq, secs, volume):
     filename = 'beep%s.pcm' % freq
     # We generate freq cycles and sample that OUTPUT_RATE times
-    per_cycle = OUTPUT_RATE / freq
+    per_cycle = OUTPUT_RATE // freq
     data = []
     for x in range(per_cycle):
         rad = float(x) / per_cycle * 2 * math.pi
         y = 256 * int(volume * math.sin(rad))
         data.extend([struct.pack('<i', y)] * 4)
-    output = open(filename, 'w')
+    output = open(filename, 'wb')
     # This is correct because OUTPUT_RATE = CDDA rate / 4 and we repeat
     # the samples 4 times, so this works out to CDDA rate
     for x in range(int(freq * secs)):
-        output.write(''.join(data))
+        output.write(b''.join(data))
     output.close()
-    print 'Wrote output to %s' % filename
+    print ('Wrote output to %s' % filename)
 
 
 def usage():
-    print 'Unexpected input'
-    print 'Usage gen_sound <freq> [<length>] [<volume>]'
-    print ' where <freq> is the frequency in Hz (int)'
-    print ' [<length>] is the time in seconds (float) - default 0.25'
+    print ('Unexpected input')
+    print ('Usage gen_sound <freq> [<length>] [<volume>]')
+    print (' where <freq> is the frequency in Hz (int)')
+    print (' [<length>] is the time in seconds (float) - default 0.25')
     print (' and [<volume>] is the volume (integer between 0 and 127)'
            ' - default %s' % DEFAULT_VOL)
 
@@ -52,19 +52,19 @@ if __name__ == "__main__":
             volume = int(sys.argv[3])
         else:
             volume = DEFAULT_VOL
-    except Exception, exc:
+    except Exception as exc:
         usage()
-        print 'Error was', exc
+        print ('Error was: %s' % exc)
         sys.exit(1)
 
     if volume > 128 or volume < 0:
         usage()
-        print 'Invalid volume: %s' % volume
+        print ('Invalid volume: %s' % volume)
         sys.exit(1)
 
     if freq > 2000 or freq < 100:
         usage()
-        print 'Invalid freq: %s' % volume
+        print ('Invalid freq: %s' % volume)
         sys.exit(1)
 
     gen_sine(freq, secs, volume)