Thanks to you both, it was indeed straightforward (but then I forgot
to post the resulting code back).
Jon
#################################
import pyglet.media.procedural
class PygletArrSound(pyglet.media.procedural.ProceduralSource):
""" Create a pyglet.StaticSource from a numpy array.
"""
def __init__(self, data, sample_rate=44800, sample_size=16):
"""Array data should be float (-+1.0)
sample_size (16 or 8) determines the number of bits used for
internal storage"""
duration = data.shape[1]/float(sample_rate) #determine
duration from data
super(_pygletArrSound, self).__init__(duration,sample_rate,
sample_size)
self.sample_rate = sample_rate
if sample_size==8: #ubyte
self.allData = (data*127+127).astype(numpy.uint8)
elif sample_size==16: #signed int16
self.allData = (data*32767).astype(numpy.int16)
print "create pyglet sound"
def _generate_data(self, bytes, offset):
if self._bytes_per_sample == 1:#ubyte
start = offset
samples = bytes
else: #signed int16
start = offset >> 1
samples = bytes >> 1
return (self.allData[start:(start+samples)]).tostring()
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