More refactoring to get things in own files to help my understanding

2017-09-07 20:15:28 +12:00
parent 475bc5da83
commit f484c7eb63
4 changed files with 94 additions and 46 deletions
@@ -0,0 +1,46 @@
+import numpy
+from Encoder import Encoder
+
+class PPM:
+    """The PPM class contains functions about PPM manipulation
+    """
+ 
+    def frame_1090es_ppm_modulate(self, even, odd):
+        """
+        Args:
+            even and odd: The bits you would converted to PPM
+        Returns:
+            The bytearray of the PPM data
+        """
+        ppm = [ ]
+        encoder = Encoder()
+
+        for i in range(48):    # pause
+            ppm.append( 0 )
+
+        ppm.append( 0xA1 )   # preamble
+        ppm.append( 0x40 )
+        
+        for i in range(len(even)):
+            word16 = numpy.packbits(encoder.manchester_encode(~even[i]))
+            ppm.append(word16[0])
+            ppm.append(word16[1])
+
+
+        for i in range(100):    # pause
+            ppm.append( 0 )
+
+        ppm.append( 0xA1 )   # preamble
+        ppm.append( 0x40 )
+
+        for i in range(len(odd)):
+            word16 = numpy.packbits(encoder.manchester_encode(~odd[i]))
+            ppm.append(word16[0])
+            ppm.append(word16[1])
+
+        for i in range(48):    # pause
+            ppm.append( 0 )
+
+        #print '[{}]'.format(', '.join(hex(x) for x in ppm))
+        
+        return bytearray(ppm)