From 81c32d12cf7ef1619a518a97a93acc994cba031e Mon Sep 17 00:00:00 2001
From: Joshua Minor <j@lux.vu>
Date: Sat, 22 Dec 2007 00:23:11 +0000
Subject: Initial version of Speak.activity

---
(limited to 'Speak.activity/mouth.py')

diff --git a/Speak.activity/mouth.py b/Speak.activity/mouth.py
new file mode 100644
index 0000000..94d156d
--- /dev/null
+++ b/Speak.activity/mouth.py
@@ -0,0 +1,172 @@
+#! /usr/bin/python
+
+import pygst
+pygst.require("0.10")
+import pygtk
+import gtk
+import cairo
+import gobject
+from time import *
+from struct import *
+import pango
+import os
+import audioop
+from Numeric import *
+from FFT import *
+
+class Mouth(gtk.DrawingArea):
+    def __init__(self, audioSource):
+        
+        gtk.DrawingArea.__init__(self)
+        self.connect("expose_event",self.expose)
+        self.buffers = []
+        self.str_buffer=''
+        self.integer_buffer=[]  
+
+        audioSource.connect("new-buffer", self._new_buffer)
+
+        self.peaks = []
+        self.main_buffers = []      
+    
+        self.y_mag = 0.7
+        self.freq_range=70
+        self.draw_interval = 1
+        self.num_of_points = 105
+        
+        self.details_show = False
+        self.logging_status=False
+        self.f=None
+
+        self.stop=False
+
+        self.fft_show = False
+        self.fftx = []
+
+        self.y_mag_bias_multiplier = 1  #constant to multiply with self.param2 while scaling values 
+        
+        self.scaleX = "10"
+        self.scaleY = "10"
+
+            
+    def _new_buffer(self, obj, buf, status, f):
+        self.str_buffer = buf
+        self.integer_buffer = list(unpack( str(int(len(buf))/2)+'h' , buf))     
+        if(len(self.main_buffers)>6301):
+            del self.main_buffers[0:(len(self.main_buffers)-6301)]
+        self.main_buffers += self.integer_buffer
+        self.logging_status=status
+        self.f=f
+        return True
+
+
+    def processBuffer(self, bounds):
+        self.param1 = bounds.height/65536.0
+        self.param2 = bounds.height/2.0 
+
+        if(self.stop==False):       
+            
+            if(self.fft_show==False):               
+                
+                ######################filtering####################
+                weights = [1,2,3,4,3,2,1] 
+                weights_sum = 16.0
+                
+                for i in range(3,len(self.integer_buffer)-3):
+                    self.integer_buffer[i] = (self.integer_buffer[(i-3)]+2*self.integer_buffer[(i-2)] + 3*self.integer_buffer[(i-1)] + 4*self.integer_buffer[(i)]+3*self.integer_buffer[(i+1)] + 2*self.integer_buffer[(i+2)]  + self.integer_buffer[(i+3)]) / weights_sum                  
+                ###################################################
+            
+                self.y_mag_bias_multiplier=1                    
+                self.draw_interval=10                   
+                
+                #100hz
+                if(self.freq_range==30):
+                    self.spacing = 60
+                    self.num_of_points=6300
+                        
+                #1khz
+                if(self.freq_range==50):
+                    self.spacing = 6
+                    self.num_of_points=630
+                        
+                #4khz
+                if(self.freq_range==70):
+                    self.spacing = 1
+                    self.num_of_points = 105
+                
+                self.scaleX = str(self.spacing*.104) + " msec"  #.104 = 5/48; 5 points per division and 48 khz sampling             
+                
+                if(len(self.main_buffers)>=self.num_of_points):
+                    del self.main_buffers[0:len(self.main_buffers)-(self.num_of_points+1)]
+                    self.buffers=[]
+                    i=0
+                    while i<self.num_of_points:
+                        self.buffers.append(self.main_buffers[i])                       
+                        i+=self.spacing
+            
+                self.scaleY=" "
+            
+            else:
+                ###############fft################      
+                Fs = 48000
+                nfft= 65536
+                self.integer_buffer=self.integer_buffer[0:256]
+                self.fftx = fft(self.integer_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_rgb(.5,.5,.5)
+        self.context.rectangle(0,0, bounds.width,bounds.height)     
+        self.context.fill()
+
+        # Draw the waveform
+        self.context.set_line_width(10.0)        
+        count = 0
+        for peak in self.peaks:
+            self.context.line_to(count,bounds.height - peak)
+            count += self.draw_interval
+        self.context.set_source_rgb(0,0,0)
+        self.context.stroke()
+
+        return True
--
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