mirror of https://github.com/python/cpython.git
55 lines
1.3 KiB
Python
55 lines
1.3 KiB
Python
|
import aiff
|
||
|
|
import al
|
||
|
|
import sys
|
||
|
|
import time
|
||
|
|
|
||
|
|
def main():
|
||
|
|
v = 1
|
||
|
|
c = al.newconfig()
|
||
|
|
nchannels = c.getchannels()
|
||
|
|
nsampframes = 0 # ???
|
||
|
|
sampwidth = c.getwidth()
|
||
|
|
samprate = 0.0 # unknown
|
||
|
|
filename = sys.argv[1]
|
||
|
|
f = open(filename, 'r')
|
||
|
|
type, totalsize = aiff.read_chunk_header(f)
|
||
|
|
if type <> 'FORM':
|
||
|
|
raise aiff.Error, 'FORM chunk expected at start of file'
|
||
|
|
aiff.read_form_chunk(f)
|
||
|
|
while 1:
|
||
|
|
try:
|
||
|
|
type, size = aiff.read_chunk_header(f)
|
||
|
|
except EOFError:
|
||
|
|
break
|
||
|
|
if v: print 'header:', `type`, size
|
||
|
|
if type = 'COMM':
|
||
|
|
nchannels, nsampframes, sampwidth, samprate = \
|
||
|
|
aiff.read_comm_chunk(f)
|
||
|
|
if v: print nchannels, nsampframes, sampwidth, samprate
|
||
|
|
elif type = 'SSND':
|
||
|
|
offset, blocksize = aiff.read_ssnd_chunk(f)
|
||
|
|
if v: print offset, blocksize
|
||
|
|
data = f.read(size-8)
|
||
|
|
if size%2: void = f.read(1)
|
||
|
|
p = makeport(nchannels, sampwidth, samprate)
|
||
|
|
play(p, data, offset, blocksize)
|
||
|
|
elif type in aiff.skiplist:
|
||
|
|
aiff.skip_chunk(f, size)
|
||
|
|
else:
|
||
|
|
raise aiff.Error, 'bad chunk type ' + type
|
||
|
|
|
||
|
|
def makeport(nchannels, sampwidth, samprate):
|
||
|
|
c = al.newconfig()
|
||
|
|
c.setchannels(nchannels)
|
||
|
|
c.setwidth(sampwidth/8)
|
||
|
|
# can't set the rate...
|
||
|
|
p = al.openport('', 'w', c)
|
||
|
|
return p
|
||
|
|
|
||
|
|
def play(p, data, offset, blocksize):
|
||
|
|
data = data[offset:]
|
||
|
|
p.writesamps(data)
|
||
|
|
while p.getfilled() > 0: time.millisleep(10)
|
||
|
|
|
||
|
|
main()
|