From b07679771f1c59ed623ae5ad7f7baff5b0ba9b9e Mon Sep 17 00:00:00 2001
From: Sebastian Muszytowski <sebastian@muszytowski.net>
Date: Wed, 27 Jan 2016 22:06:03 +0100
Subject: removed obsolete code, added new blinkenrocket python suite

---
 utilities/modem.py | 111 -----------------------------------------------------
 1 file changed, 111 deletions(-)
 delete mode 100644 utilities/modem.py

(limited to 'utilities/modem.py')

diff --git a/utilities/modem.py b/utilities/modem.py
deleted file mode 100644
index f2e2b1b..0000000
--- a/utilities/modem.py
+++ /dev/null
@@ -1,111 +0,0 @@
-#!/usr/bin/env python
-
-import sys, wave
-
-#
-# "Modem" wav creator for "Next Gen" Tagsu Modem :)
-#
-# Author: Jari Tulilahti
-# Copyright: 2014 Rakettitiede Oy
-# License: LGPLv3, see COPYING and COPYING.LESSER -files for more info
-#
-# Usage:
-#	python modem.py <input_filename> [output_wav_filename] [samplerate]
-#
-# Default sample rate is 48000
-# Default output to stdout if no wav filename given
-#
-# Working sample rates are between 16000 - 48000:
-#
-# 16000 (~4000 bps)
-# 22050 (~5500 bps)
-# 24000 (~6000 bps)
-# 32000 (~8000 bps)
-# 44100 (~11025 bps)
-# 48000 (~12000 bps)
-#
-# NOTICE:
-#
-# Actual speed depends of the data, as zeroes and ones take
-# different amount of samples, the more zeros, the faster the speed.
-# Average bps has been calculated using data "0101010101..."
-#
-
-class modem:
-
-	bits = [[3 * chr(0), 5 * chr(0)], [3 * chr(255), 5 * chr(255)]]
-	sync = [17 * chr(0), 17 * chr(255)]
-	hilo = 0
-
-	# Nothing here
-	def __init__(self):
-		pass
-
-	# Generate one sync-pulse
-	def syncsignal(self):
-		self.hilo ^= 1
-		return self.sync[self.hilo]
-
-	# Decode bits to modem signals
-	def modemcode(self, byte):
-		bleep = ""
-		for x in xrange(8):
-			self.hilo ^= 1
-			bleep += self.bits[self.hilo][byte & 0x01]
-			byte >>= 1
-		return bleep
-
-	# Return <length> samples of silence
-	def silence(self, length):
-		return chr(127) * length
-
-
-if len(sys.argv) < 2:
-	print """Usage: {0} <input_filename> [output_wav_filename] [samplerate]
-
-	input_filename		Data file as input to modem.
-	output_wav_filename	Write output-wav to this file. If empty, output to STDOUT.
-	samplerate		Sample rate between 16000 - 48000. Default is 48000.
-	""".format(sys.argv[0])
-	sys.exit()
-
-sound = ""
-
-m = modem()
-cnt = 0
-
-# Add silence
-# sound += m.silence(24000)
-
-# Add 4 sync signals to start
-for x in xrange(4):
-	sound += m.syncsignal()
-
-# Send Actual data
-f = open(sys.argv[1])
-for byte in f.read():
-	sound += m.modemcode(ord(byte))
-
-	# Add counter
-	cnt += 1
-
-	# After every 10 bytes, send 2 sync signals
-	if cnt == 10:
-		for x in xrange(2):
-			sound += m.syncsignal()
-		cnt = 0
-
-# End transmission with few sync-signals
-for x in xrange(4):
-	sound += m.syncsignal()
-
-# Output the generated sound (no wav headers)
-if len(sys.argv) <= 2:
-	print sound
-else:
-	freq = int(sys.argv[3]) if len(sys.argv) > 3 else 48000
-	wav = wave.open(sys.argv[2], 'wb')
-	wav.setparams((1, 1, freq, 0, "NONE", None))
-	wav.writeframes(sound)
-	wav.close()
-
-- 
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