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