added changes on checking similarity

base/api/wavsound.py

@@ -0,0 +1,53 @@
+import wave, struct
+
+class wavsound:
+    
+    """wavsound object collects data from a wav file and stores it
+    as a list of integers """
+    
+    def __init__(self, wav_file):
+        self.data = []# set it as a local variable
+        if wav_file == '':
+             return
+        #print(wav_file)
+        waveFile = wave.open(wav_file, 'r')
+        
+        length = waveFile.getnframes()
+        for i in range(0,length):
+            waveData = waveFile.readframes(1)
+            
+            try:
+                data = struct.unpack("<h", waveData)
+            except:
+                data = struct.unpack("<L", waveData)
+            # data = struct.unpack("<h", waveData)
+            # data = struct.unpack("<L", waveData)
+            self.data.append(int(data[0]))
+            
+    # return data    
+    def get_data(self):
+        return self.data
+    
+    # set data from a list of int
+    def set_data(self, data):
+        self.data = data  
+    
+    # copy data from other wavsound
+    def copy_from(self, other_wavsound):
+        self.data = other_wavsound.get_data()    
+    
+    # Get a small chunk of wavsound
+    def get_chunk (self, section_no, num_chunk):
+        new_wavsound = wavsound('')
+        data = self.get_data()
+        #print(len(self.get_data()))
+        length = int(len(self.get_data())/num_chunk)
+        #print(length)
+        new_wavsound.set_data(data[(length*section_no):(length*(section_no+1))])
+        return new_wavsound
+    def __repr__(self):
+        strr = ''
+        for i in self.data:
+            strr = strr + " " + str(i)
+        return strr
+