From 9df72c5591aee015089a4e96f9403183262dcc01 Mon Sep 17 00:00:00 2001 From: C. Scott Ananian Date: Tue, 11 Dec 2007 09:24:34 +0000 Subject: Factor out a pippy library, which programs can use with 'import pippy'. The pygame portion of the library uses 'best practices' to avoid eating up CPU, and pauses & suspends after 20 seconds of inactivity. --- (limited to 'library') diff --git a/library/pippy/__init__.py b/library/pippy/__init__.py new file mode 100644 index 0000000..8ddcc7e --- /dev/null +++ b/library/pippy/__init__.py @@ -0,0 +1,9 @@ +"""Pippy standard library.""" +import pippy.console as console +import pippy.game as pygame +import pippy.sound as sound + +def wait(delay=0.1): + """Pause briefly, for animations.""" + import time + time.sleep(delay) diff --git a/library/pippy/console.py b/library/pippy/console.py new file mode 100644 index 0000000..cdbb023 --- /dev/null +++ b/library/pippy/console.py @@ -0,0 +1,5 @@ +"""Console helpers for pippy.""" +def clear(): + """Clear screen on console.""" + # magic escape sequence + print '\x1B[H\x1B[J' # clear screen diff --git a/library/pippy/game.py b/library/pippy/game.py new file mode 100644 index 0000000..e5996fa --- /dev/null +++ b/library/pippy/game.py @@ -0,0 +1,61 @@ +"""pygame support for pippy.""" + +import pygame + +def pause(): + # display a "Paused" screen and suspend. + caption, icon_caption = pygame.display.get_caption() + screen = pygame.display.get_surface() + old_screen = screen.copy() # save this for later. + + # dim the screen and display the 'paused' message in the center. + BLACK = (0,0,0) + WHITE = (255,255,255) + dimmed = screen.copy() + dimmed.set_alpha(128) + screen.fill(WHITE) + screen.blit(dimmed, (0,0)) + font = pygame.font.Font(None, 36) # 36px high + msg = " PAUSED " + msg_surf = font.render(msg, True, BLACK, WHITE) + def center(rect, screen): + rect.center = (screen.get_width()/2, screen.get_height()/2) + + rect = pygame.Rect((0,0),msg_surf.get_size()) + rect.inflate_ip(rect.width, rect.height) + center(rect, screen) + screen.fill(WHITE, rect) + rect = msg_surf.get_rect() + center(rect, screen) + screen.blit(msg_surf, rect) + pygame.display.flip() + + # SUSPEND + try: + open('/sys/power/state','w').write('mem') + except: # XXX: couldn't suspend (no permissions?) + pygame.event.post(pygame.event.wait()) + + pygame.display.set_caption(caption, icon_caption) + screen.blit(old_screen, (0,0)) + pygame.display.flip() + +_last_event_time=0 +def next_frame(max_fps=20, idle_timeout=20, clock=pygame.time.Clock()): + """Limit maximum frame rate of pygame. Returns True. + + If idle longer than the idle_timeout (in seconds), then we'll put up a + "paused" message and the XO will suspend. This ensures that we don't + burn up all of our battery running an animation!""" + global _last_event_time + clock.tick(max_fps) + + if pygame.event.peek(xrange(pygame.NOEVENT, pygame.USEREVENT)): + # we're not idle anymore. + _last_event_time = pygame.time.get_ticks() + elif (pygame.time.get_ticks() - _last_event_time) >= idle_timeout*1000: + # we've been idle for a long time. Pause & suspend. + pause() + _last_event_time = pygame.time.get_ticks() + + return True diff --git a/library/pippy/sound.py b/library/pippy/sound.py new file mode 100755 index 0000000..b84cbe6 --- /dev/null +++ b/library/pippy/sound.py @@ -0,0 +1,210 @@ +#! /usr/bin/env python + +# added frequency modulation genertor +# audioOut write a wave file if a string is given as argument +import os +from sugar import env +from sugar.activity.activity import get_bundle_path + +orchlines = [] +scorelines = [] +instrlist = [] +fnum = [100] + +temp_path = env.get_profile_path() + '/pippy' +if not os.path.isdir(temp_path): + os.mkdir(temp_path) + +def quit(self): + perf.Stop() + perf.Join() + cs.Reset() + cs = None + +def defAdsr(attack=0.01, decay=0.1, sustain=0.8, release=0.1): + """Define an ADSR envelope. fnum = defADSR(attack = [0.01], decay = [0.1], sustain = [0.8], release = [0.1])""" + att = int(2048 * attack) + dec = int(2048 * decay) + rel = int(2048 * release) + bal = 2048 - (att + dec + rel) + sus = min(1., sustain) + + fnum[0] += 1 + scorelines.append("f%ld 0 2048 7 0 %ld 1. %ld %f %ld %f %ld 0\n" % (fnum[0], att, dec, sus, bal, sus, rel)) + return fnum[0] + +def defLineSegments(list=[0,10,1,10,0,10,1,10,0]): + """Define a breakpoints envelope. list=[0,10,1,10,0,10,1,10,0]. list begin with the start value of the function and is follow by any pair values (duration, value). The number of elements in the list should odd.""" + + totalLength = 0 + newlist = [] + for i in range(len(list)): + if (i % 2) == 1: + totalLength += list[i] + + for i in range(len(list)): + if (i % 2) == 0: newlist.append(list[i]) + else: newlist.append(int(2048 * (list[i] / float(totalLength)))) + + fnum[0] += 1 + scorelines.append("f" + str(fnum[0]) + " 0 2048 -7 " + " ".join([str(n) for n in newlist]) + '\n') + return fnum[0] + +def defComplexWave(list=[1,0,0,.3,0,.2,0,0,.1]): + """Define a complex waveform to be read with 'playComplex' function. list=[1,0,0,.3,0,.2,0,0,.1] +is a list of amplitude for succesive harmonics of a waveform""" + fnum[0] += 1 + scorelines.append("f" + str(fnum[0]) + " 0 2048 10 " + " ".join([str(n) for n in list]) + '\n') + return fnum[0] + +def playSine( pitch=1000, amplitude=5000, duration=1, starttime=0, pitch_envelope='default', amplitude_envelope='default'): + """Play a sine wave (pitch = [1000], amplitude = [5000], duration = [1], starttime = [0], pitch_envelope=['default'], amplitude_envelope=['default'])""" + _play(pitch, amplitude, duration, starttime, pitch_envelope, amplitude_envelope, 1) + +def playSquare( pitch=1000, amplitude=5000, duration=1, starttime=0, pitch_envelope='default', amplitude_envelope='default'): + """Play a square wave (pitch = [1000], amplitude = [5000], duration = [1], starttime = [0], pitch_envelope=['default'], amplitude_envelope=['default'])""" + _play(pitch, amplitude, duration, starttime, pitch_envelope, amplitude_envelope, 2) + +def playSawtooth( pitch=1000, amplitude=5000, duration=1, starttime=0, pitch_envelope='default', amplitude_envelope='default'): + """Play a sawtooth wave (pitch = [1000], amplitude = [5000], duration = [1], starttime = [0], pitch_envelope=['default'], amplitude_envelope=['default'])""" + _play(pitch, amplitude, duration, starttime, pitch_envelope, amplitude_envelope, 3) + +def playComplex( pitch=1000, amplitude=5000, duration=1, starttime=0, pitch_envelope='default', amplitude_envelope='default', wave='default'): + """Play a complex wave (pitch = [1000], amplitude = [5000], duration = [1], starttime = [0], pitch_envelope = ['default'], amplitude_envelope, wave = ['default'] )""" + if wave == 'default': wavetable = 10 + else: wavetable = wave + _play(pitch, amplitude, duration, starttime, pitch_envelope, amplitude_envelope, wavetable) + +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 playFrequencyModulation( pitch=500, amplitude=5000, duration=2, starttime=0, carrier=1, modulator=.5, index=5, pitch_envelope='default', amplitude_envelope='default', carrier_envelope='default', modulator_envelope='default', index_envelope='default', wave='default'): + """Play a frequency modulation synthesis sound (pitch = [100], amplitude = [5000], duration = [2], starttime = [0], carrier = [1], modulator = [.5], index = [5], pitch_envelope = ['default'], amplitude_envelope = ['default'], carrier_envelope = ['default'], modulator_envelope = ['default'], index_envelope = ['default'], wave = ['default'] )""" + if pitch_envelope == 'default': pitenv = 99 + else: pitenv = pitch_envelope + + if amplitude_envelope == 'default': ampenv = 100 + else: ampenv = amplitude_envelope + + if carrier_envelope == 'default': carenv = 99 + else: carenv = carrier_envelope + + if modulator_envelope == 'default': modenv = 99 + else: modenv = modulator_envelope + + if index_envelope == 'default': indenv = 99 + else: indenv = index_envelope + + if wave == 'default': wavetable = 1 + else: wavetable = wave + + if not 7 in instrlist: + orchlines.append("instr 7\n") + orchlines.append("kpitenv oscil 1, 1/p3, p10\n") + orchlines.append("kenv oscil 1, 1/p3, p11\n") + orchlines.append("kcarenv oscil 1, 1/p3, p12\n") + orchlines.append("kmodenv oscil 1, 1/p3, p13\n") + orchlines.append("kindenv oscil 1, 1/p3, p14\n") + orchlines.append("asig foscil p5*kenv, p4*kpitenv, p6*kcarenv, p7*kmodenv, p8*kindenv, p9\n") + orchlines.append("out asig\n") + orchlines.append("endin\n\n") + instrlist.append(7) + + scorelines.append("i7 %s %s %s %s %s %s %s %s %s %s %s %s %s\n" % (str(starttime), str(duration), str(pitch), str(amplitude), str(carrier), str(modulator), str(index), str(wavetable), str(pitenv), str(ampenv), str(carenv), str(modenv), str(indenv))) + +def playPluck( pitch=100, amplitude=5000, duration=2, starttime=0, pitch_envelope='default', amplitude_envelope='default'): + """Play a string physical modeling sound (pitch = [100], amplitude = [5000], duration = [2], starttime = [0], pitch_envelope = ['default'], amplitude_envelope )""" + if pitch_envelope == 'default': pitenv = 99 + else: pitenv = pitch_envelope + + if amplitude_envelope == 'default': ampenv = 100 + else: ampenv = amplitude_envelope + + if not 8 in instrlist: + orchlines.append("instr 8\n") + orchlines.append("kpitenv oscil 1, 1/p3, p6\n") + orchlines.append("kenv oscil 1, 1/p3, p7\n") + orchlines.append("asig pluck p5*kenv, p4*kpitenv, 40, 0, 6\n") + orchlines.append("asig butterlp asig, 4000\n") + orchlines.append("out asig\n") + orchlines.append("endin\n\n") + instrlist.append(8) + + scorelines.append("i8 %s %s %s %s %s %s\n" % (str(starttime), str(duration), str(pitch), str(amplitude), str(pitenv), str(ampenv))) + +def playWave(sound='horse', pitch=1, amplitude=1, loop=False, duration=1, starttime=0, pitch_envelope='default', amplitude_envelope='default'): + """Play a wave file (sound = ['horse'], pitch = [1], amplitude = [1], loop = [False], duration = [1], starttime = [0], pitch_envelope=['default'], amplitude_envelope=['default'])""" + fullname = '/usr/share/activities/TamTamEdit.activity/common/Resources/Sounds/' + 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 getSoundList(): + return sorted(os.listdir('/usr/share/activities/TamTamEdit.activity/common/Resources/Sounds/')) + +def audioOut(file=None): + """Compile a .csd file and start csound to run it. If a string is given as argument, it write a wave file on disk instead of sending sound to hp. (file = [None])""" + path = temp_path + csd = open(path + "/temp.csd", "w") + csd.write("\n\n") + csd.write("\n") + if file == None: + csd.write("-+rtaudio=alsa -odevaudio -m0 -d -b256 -B512\n") + else: + file = path + "/" + str(file) + ".wav" + csd.write("-+rtaudio=alsa -o%s -m0 -W -d -b256 -B512\n" % file) + csd.write("\n\n") + csd.write("\n\n") + csd.write("sr=16000\n") + csd.write("ksmps=50\n") + csd.write("nchnls=1\n\n") + for line in orchlines: + csd.write(line) + csd.write("\n\n\n") + csd.write("\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") + for line in scorelines: + csd.write(line) + csd.write("e\n") + csd.write("\n\n") + csd.write("\n") + csd.close() + + os.system('csound ' + path + '/temp.csd >/dev/null 2>/dev/null') -- cgit v0.9.1