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)