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Diffstat (limited to 'Speak.activity/fft_mouth.py')
| -rw-r--r-- | Speak.activity/fft_mouth.py | 128 |
1 files changed, 0 insertions, 128 deletions
diff --git a/Speak.activity/fft_mouth.py b/Speak.activity/fft_mouth.py deleted file mode 100644 index 53bcadf..0000000 --- a/Speak.activity/fft_mouth.py +++ /dev/null @@ -1,128 +0,0 @@ -# Speak.activity -# A simple front end to the espeak text-to-speech engine on the XO laptop -# http://wiki.laptop.org/go/Speak -# -# Copyright (C) 2008 Joshua Minor -# This file is part of Speak.activity -# -# Parts of Speak.activity are based on code from Measure.activity -# Copyright (C) 2007 Arjun Sarwal - arjun@laptop.org -# -# Speak.activity is free software: you can redistribute it and/or modify -# it under the terms of the GNU General Public License as published by -# the Free Software Foundation, either version 3 of the License, or -# (at your option) any later version. -# -# Speak.activity is distributed in the hope that it will be useful, -# but WITHOUT ANY WARRANTY; without even the implied warranty of -# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the -# GNU General Public License for more details. -# -# You should have received a copy of the GNU General Public License -# along with Speak.activity. If not, see <http://www.gnu.org/licenses/>. - -# This code is a stripped down version of the fft view from Measure - -from mouth import * - -# Newer OLPC builds (and Fedora) have numpy instead of numeric: -try: - from numpy.oldnumeric import ceil - from numpy.fft import * -except: - from Numeric import ceil - from FFT import * - -class FFTMouth(Mouth): - def __init__(self, audioSource, fill_color): - - Mouth.__init__(self, audioSource, fill_color) - - self.peaks = [] - - self.y_mag = 1.7 - self.freq_range=70 - self.draw_interval = 1 - self.num_of_points = 105 - - self.stop=False - - self.y_mag_bias_multiplier = 1 #constant to multiply with self.param2 while scaling values - - self.fftx = [] - - self.scaleX = "10" - self.scaleY = "10" - - - def processBuffer(self, bounds): - self.param1 = bounds.height/65536.0 - self.param2 = bounds.height/2.0 - - if(self.stop==False): - - Fs = 48000 - nfft= 65536 - self.newest_buffer=self.newest_buffer[0:256] - self.fftx = fft(self.newest_buffer, 256,-1) - - self.fftx=self.fftx[0:self.freq_range*2] - self.draw_interval=bounds.width/(self.freq_range*2.) - - NumUniquePts = ceil((nfft+1)/2) - self.buffers=abs(self.fftx)*0.02 - self.y_mag_bias_multiplier=0.1 - self.scaleX = "hz" - self.scaleY = "" - - if(len(self.buffers)==0): - return False - - # Scaling the values - val = [] - for i in self.buffers: - temp_val_float = float(self.param1*i*self.y_mag) + self.y_mag_bias_multiplier * self.param2 - - if(temp_val_float >= bounds.height): - temp_val_float = bounds.height-25 - if(temp_val_float <= 0): - temp_val_float = 25 - val.append( temp_val_float ) - - self.peaks = val - - def expose(self, widget, event): - """This function is the "expose" event handler and does all the drawing.""" - - bounds = self.get_allocation() - - self.processBuffer(bounds) - - #Create context, disable antialiasing - self.context = widget.window.cairo_create() - self.context.set_antialias(cairo.ANTIALIAS_NONE) - - #set a clip region for the expose event. This reduces redrawing work (and time) - self.context.rectangle(event.area.x, event.area.y,event.area.width, event.area.height) - self.context.clip() - - # background - self.context.set_source_rgba(*self.fill_color.get_rgba()) - self.context.rectangle(0,0, bounds.width,bounds.height) - self.context.fill() - - # Draw the waveform - self.context.set_line_width(min(bounds.height/10.0, 10)) - self.context.set_source_rgb(0,0,0) - count = 0 - for peak in self.peaks: - self.context.line_to(bounds.width/2 + count,bounds.height/2 - peak) - count += self.draw_interval - self.context.stroke() - count = 0 - for peak in self.peaks: - self.context.line_to(bounds.width/2 - count,bounds.height/2 - peak) - count += self.draw_interval - self.context.stroke() - - return True |