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Viewing changes to Mac/Demo/sound/playaiff.py

  • Committer: Bazaar Package Importer
  • Author(s): Matthias Klose
  • Date: 2009-02-13 12:51:00 UTC
  • Revision ID: james.westby@ubuntu.com-20090213125100-uufgcb9yeqzujpqw
Tags: upstream-2.6.1
Import upstream version 2.6.1

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Mac/Demo/sound/playaiff.py
 
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from Carbon.Sound import *
 
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from Carbon import Snd
 
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import aifc, audioop
 
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fn = 'f:just samples:2ndbeat.aif'
 
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af = aifc.open(fn, 'r')
 
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print af.getparams()
 
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print 'nframes  =', af.getnframes()
 
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print 'nchannels =', af.getnchannels()
 
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print 'framerate =', af.getframerate()
 
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nframes = min(af.getnframes(), 100000)
 
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frames = af.readframes(nframes)
 
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print 'len(frames) =', len(frames)
 
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print repr(frames[:100])
 
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frames = audioop.add(frames, '\x80'*len(frames), 1)
 
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print repr(frames[:100])
 
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import struct
 
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header1 = struct.pack('llhhllbbl',
 
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                      0,
 
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                      af.getnchannels(),
 
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                      af.getframerate(),0,
 
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                      0,
 
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                      0,
 
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                      0xFF,
 
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                      60,
 
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                      nframes)
 
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print repr(header1)
 
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header2 = struct.pack('llhlll', 0, 0, 0, 0, 0, 0)
 
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header3 = struct.pack('hhlll',
 
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                      af.getsampwidth()*8,
 
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                      0,
 
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                      0,
 
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                      0,
 
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                      0)
 
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print repr(header3)
 
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header = header1 + header2 + header3
 
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buffer = header + frames
 
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chan = Snd.SndNewChannel(5,0x00C0)
 
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Snd.SndDoCommand(chan, (bufferCmd, 0, buffer), 0)