1+ import pyaudio
2+ import wave
3+ import struct
4+ import sys
5+ import math
6+ 7+ class Audio :
8+ """
9+
10+ """
11+ def __init__ (self , filename , chunksize , paudio ):
12+ filestream = wave .open (filename , "rb" )
13+ 14+ self .audiostream = paudio .open (format = paudio .get_format_from_width (filestream .getsampwidth ()),
15+ channels = filestream .getnchannels (),
16+ rate = filestream .getframerate (),
17+ output = True )
18+ 19+ self .progress = 0.0
20+ self .pitch = 1.0
21+ self .volume = 1.0
22+ self .chunksize = chunksize
23+ 24+ # We store the data as integers here
25+ self .audiodata = []
26+ 27+ # These formats should work most of the time
28+ # See: https://docs.python.org/2/library/struct.html#format-characters
29+ types = {1 : 'B' , 2 : 'h' , 4 : 'i' }
30+ self .type = types [filestream .getsampwidth ()]
31+ # Check for system byteorder
32+ endianness = {"big" : '>' , "little" : '<' }
33+ self .endianness = endianness [sys .byteorder ]
34+ 35+ audiodata = filestream .readframes (chunksize )
36+ 37+ while (audiodata ):
38+ fmt = self .endianness + self .type * int (len (audiodata ) / filestream .getsampwidth ())
39+ data = struct .unpack (fmt , audiodata )
40+ self .audiodata .extend (data )
41+ audiodata = filestream .readframes (chunksize )
42+ 43+ filestream .close ()
44+ 45+ while (True ):
46+ self .process ()
47+ 48+ def __del__ (self ):
49+ self .audiostream .stop_stream ()
50+ self .audiostream .close ()
51+ 52+ def process (self ):
53+ if (self .progress > len (self .audiodata )):
54+ return
55+ readout = self .pitch * float (self .chunksize )
56+ index = math .floor (self .progress )
57+ count = math .ceil (readout )
58+ subdata = self .audiodata [index : min (index + count , len (self .audiodata ))]
59+ fmt = self .endianness + self .type * len (subdata )
60+ audiodata = struct .pack (fmt , * subdata )
61+ self .audiostream .write (audiodata )
62+ self .progress += readout
63+ 64+ paudio = pyaudio .PyAudio ()
65+ 66+ audio = Audio ("MenuTheme2_final.wav" , 1024 , paudio )
67+ 68+ paudio .terminate ()
0 commit comments