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      1 from Carbon.Sound import *
      2 from Carbon import Snd
      3 
      4 import aifc, audioop
      5 
      6 fn = 'f:just samples:2ndbeat.aif'
      7 af = aifc.open(fn, 'r')
      8 print af.getparams()
      9 print 'nframes  =', af.getnframes()
     10 print 'nchannels =', af.getnchannels()
     11 print 'framerate =', af.getframerate()
     12 nframes = min(af.getnframes(), 100000)
     13 frames = af.readframes(nframes)
     14 print 'len(frames) =', len(frames)
     15 print repr(frames[:100])
     16 frames = audioop.add(frames, '\x80'*len(frames), 1)
     17 print repr(frames[:100])
     18 
     19 import struct
     20 
     21 header1 = struct.pack('llhhllbbl',
     22                       0,
     23                       af.getnchannels(),
     24                       af.getframerate(),0,
     25                       0,
     26                       0,
     27                       0xFF,
     28                       60,
     29                       nframes)
     30 print repr(header1)
     31 header2 = struct.pack('llhlll', 0, 0, 0, 0, 0, 0)
     32 header3 = struct.pack('hhlll',
     33                       af.getsampwidth()*8,
     34                       0,
     35                       0,
     36                       0,
     37                       0)
     38 print repr(header3)
     39 header = header1 + header2 + header3
     40 
     41 buffer = header + frames
     42 
     43 chan = Snd.SndNewChannel(5,0x00C0)
     44 
     45 Snd.SndDoCommand(chan, (bufferCmd, 0, buffer), 0)
     46