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-rwxr-xr-xDemo/scripts/morse.py149
1 files changed, 0 insertions, 149 deletions
diff --git a/Demo/scripts/morse.py b/Demo/scripts/morse.py
deleted file mode 100755
index 3da49da..0000000
--- a/Demo/scripts/morse.py
+++ /dev/null
@@ -1,149 +0,0 @@
-# DAH should be three DOTs.
-# Space between DOTs and DAHs should be one DOT.
-# Space between two letters should be one DAH.
-# Space between two words should be DOT DAH DAH.
-
-import sys, math, audiodev
-
-DOT = 30
-DAH = 3 * DOT
-OCTAVE = 2 # 1 == 441 Hz, 2 == 882 Hz, ...
-
-morsetab = {
- 'A': '.-', 'a': '.-',
- 'B': '-...', 'b': '-...',
- 'C': '-.-.', 'c': '-.-.',
- 'D': '-..', 'd': '-..',
- 'E': '.', 'e': '.',
- 'F': '..-.', 'f': '..-.',
- 'G': '--.', 'g': '--.',
- 'H': '....', 'h': '....',
- 'I': '..', 'i': '..',
- 'J': '.---', 'j': '.---',
- 'K': '-.-', 'k': '-.-',
- 'L': '.-..', 'l': '.-..',
- 'M': '--', 'm': '--',
- 'N': '-.', 'n': '-.',
- 'O': '---', 'o': '---',
- 'P': '.--.', 'p': '.--.',
- 'Q': '--.-', 'q': '--.-',
- 'R': '.-.', 'r': '.-.',
- 'S': '...', 's': '...',
- 'T': '-', 't': '-',
- 'U': '..-', 'u': '..-',
- 'V': '...-', 'v': '...-',
- 'W': '.--', 'w': '.--',
- 'X': '-..-', 'x': '-..-',
- 'Y': '-.--', 'y': '-.--',
- 'Z': '--..', 'z': '--..',
- '0': '-----',
- '1': '.----',
- '2': '..---',
- '3': '...--',
- '4': '....-',
- '5': '.....',
- '6': '-....',
- '7': '--...',
- '8': '---..',
- '9': '----.',
- ',': '--..--',
- '.': '.-.-.-',
- '?': '..--..',
- ';': '-.-.-.',
- ':': '---...',
- "'": '.----.',
- '-': '-....-',
- '/': '-..-.',
- '(': '-.--.-',
- ')': '-.--.-',
- '_': '..--.-',
- ' ': ' '
-}
-
-# If we play at 44.1 kHz (which we do), then if we produce one sine
-# wave in 100 samples, we get a tone of 441 Hz. If we produce two
-# sine waves in these 100 samples, we get a tone of 882 Hz. 882 Hz
-# appears to be a nice one for playing morse code.
-def mkwave(octave):
- global sinewave, nowave
- sinewave = ''
- for i in range(100):
- val = int(math.sin(math.pi * float(i) * octave / 50.0) * 30000)
- sinewave = sinewave + chr((val >> 8) & 255) + chr(val & 255)
- nowave = '\0' * 200
-
-mkwave(OCTAVE)
-
-def main():
- import getopt, string
- try:
- opts, args = getopt.getopt(sys.argv[1:], 'o:p:')
- except getopt.error:
- sys.stderr.write('Usage ' + sys.argv[0] +
- ' [ -o outfile ] [ args ] ...\n')
- sys.exit(1)
- dev = None
- for o, a in opts:
- if o == '-o':
- import aifc
- dev = aifc.open(a, 'w')
- dev.setframerate(44100)
- dev.setsampwidth(2)
- dev.setnchannels(1)
- if o == '-p':
- mkwave(string.atoi(a))
- if not dev:
- import audiodev
- dev = audiodev.AudioDev()
- dev.setoutrate(44100)
- dev.setsampwidth(2)
- dev.setnchannels(1)
- dev.close = dev.stop
- dev.writeframesraw = dev.writeframes
- if args:
- line = string.join(args)
- else:
- line = sys.stdin.readline()
- while line:
- mline = morse(line)
- play(mline, dev)
- if hasattr(dev, 'wait'):
- dev.wait()
- if not args:
- line = sys.stdin.readline()
- else:
- line = ''
- dev.close()
-
-# Convert a string to morse code with \001 between the characters in
-# the string.
-def morse(line):
- res = ''
- for c in line:
- try:
- res = res + morsetab[c] + '\001'
- except KeyError:
- pass
- return res
-
-# Play a line of morse code.
-def play(line, dev):
- for c in line:
- if c == '.':
- sine(dev, DOT)
- elif c == '-':
- sine(dev, DAH)
- else: # space
- pause(dev, DAH + DOT)
- pause(dev, DOT)
-
-def sine(dev, length):
- for i in range(length):
- dev.writeframesraw(sinewave)
-
-def pause(dev, length):
- for i in range(length):
- dev.writeframesraw(nowave)
-
-if __name__ == '__main__' or sys.argv[0] == __name__:
- main()