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Diffstat (limited to 'pysamples/csound.py')
| -rw-r--r-- | pysamples/csound.py | 140 |
1 files changed, 140 insertions, 0 deletions
diff --git a/pysamples/csound.py b/pysamples/csound.py new file mode 100644 index 0000000..f2bccfa --- /dev/null +++ b/pysamples/csound.py @@ -0,0 +1,140 @@ +#Copyright (c) 2011 Walter Bender + +# This procedure is invoked when the user-definable block on the +# "extras" palette is selected. + +# Usage: Import this code into a Python (user-definable) block and +# pass a sound name Python block. The sound will play. +# Alternatively, pass a pitch, amplitude, and duration, e.g., 440, 5000, 1 + +# Note: Assumes TamTam suite is installed in ~/Activities + + +def myblock(tw, sound): + ''' Plays a sound file ''' + + from TurtleArt.tautils import get_path + import os + + dirs = [os.path.join(os.environ['HOME'], + 'Activities/TamTamMini.activity/common/Resources/Sounds/')] + orchlines = [] + scorelines = [] + instrlist = [] + fnum = [100] + + def finddir(): + for d in dirs: + if os.path.isdir(d): + return d + + def playSine(pitch=1000, amplitude=5000, duration=1, starttime=0, + pitch_envelope='default', amplitude_envelope='default'): + """ Create a score to play a sine wave. """ + _play(pitch, amplitude, duration, starttime, pitch_envelope, + amplitude_envelope, 1) + + def _play(pitch, amplitude, duration, starttime, pitch_envelope, + amplitude_envelope, instrument): + if pitch_envelope == 'default': + pitenv = 99 + else: + pitenv = pitch_envelope + + if amplitude_envelope == 'default': + ampenv = 100 + else: + ampenv = amplitude_envelope + + if not 1 in instrlist: + orchlines.append("instr 1\n") + orchlines.append("kpitenv oscil 1, 1/p3, p6\n") + orchlines.append("aenv oscil 1, 1/p3, p7\n") + orchlines.append("asig oscil p5*aenv, p4*kpitenv, p8\n") + orchlines.append("out asig\n") + orchlines.append("endin\n\n") + instrlist.append(1) + + scorelines.append("i1 %s %s %s %s %s %s %s\n" % ( + str(starttime), str(duration), str(pitch), str(amplitude), + str(pitenv), str(ampenv), str(instrument))) + + def playWave(sound='horse', pitch=1, amplitude=1, loop=False, duration=1, + starttime=0, pitch_envelope='default', + amplitude_envelope='default'): + """ Create a score to play a wave file. """ + + if '/' in sound: + fullname = sound + else: + fullname = finddir() + str(sound) + + if loop == False: lp = 0 + else: lp = 1 + + if pitch_envelope == 'default': pitenv = 99 + else: pitenv = pitch_envelope + + if amplitude_envelope == 'default': ampenv = 100 + else: ampenv = amplitude_envelope + + if not 9 in instrlist: + orchlines.append("instr 9\n") + orchlines.append("kpitenv oscil 1, 1/p3, p8\n") + orchlines.append("aenv oscil 1, 1/p3, p9\n") + orchlines.append("asig diskin p4, p5*kpitenv, 0, p7\n") + orchlines.append("out asig*p6*aenv\n") + orchlines.append("endin\n\n") + instrlist.append(9) + + scorelines.append('i9 %f %f "%s" %s %s %s %s %s\n' % ( + float(starttime), float(duration), fullname, str(pitch), + str(amplitude), str(lp), str(pitenv), str(ampenv))) + + def audioWrite(file): + """ Compile a .csd file. """ + + csd = open(file, "w") + csd.write("<CsoundSynthesizer>\n\n") + csd.write("<CsOptions>\n") + csd.write("-+rtaudio=alsa -odevaudio -m0 -d -b256 -B512\n") + csd.write("</CsOptions>\n\n") + csd.write("<CsInstruments>\n\n") + csd.write("sr=16000\n") + csd.write("ksmps=50\n") + csd.write("nchnls=1\n\n") + # csd.write(orchlines.pop()) + for line in orchlines: + csd.write(line) + csd.write("\n</CsInstruments>\n\n") + csd.write("<CsScore>\n\n") + csd.write("f1 0 2048 10 1\n") + csd.write("f2 0 2048 10 1 0 .33 0 .2 0 .143 0 .111\n") + csd.write("f3 0 2048 10 1 .5 .33 .25 .2 .175 .143 .125 .111 .1\n") + csd.write("f10 0 2048 10 1 0 0 .3 0 .2 0 0 .1\n") + csd.write("f99 0 2048 7 1 2048 1\n") + csd.write("f100 0 2048 7 0. 10 1. 1900 1. 132 0.\n") + csd.write(scorelines.pop()) + csd.write("e\n") + csd.write("\n</CsScore>\n") + csd.write("\n</CsoundSynthesizer>") + csd.close() + + if type(sound) == float: + playSine(pitch=float(sound)) + elif type(sound) == list: # Create a score by computing a sinewave. + if len(sound) == 1: + playSine(pitch=float(sound[0])) + elif len(sound) == 2: + playSine(pitch=float(sound[0]), amplitude=float(sound[1])) + else: + playSine(pitch=float(sound[0]), amplitude=float(sound[1]), + duration=float(sound[2])) + else: # Create a score from a prerecorded Wave file. + playWave(sound) + if tw.running_sugar: + path = os.path.join(get_path(tw.activity, 'instance'), 'tmp.csd') + else: + path = os.path.join('/tmp', 'tmp.csd') + audioWrite(path) # Create a csound file from the score. + os.system('csound ' + path) # Play the csound file. |