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45 lines
1.2 KiB
Python
45 lines
1.2 KiB
Python
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)
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