104 lines
3.3 KiB
Python
104 lines
3.3 KiB
Python
## pygame - Python Game Library
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## Copyright (C) 2008 Marcus von Appen
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##
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## This library is free software; you can redistribute it and/or
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## modify it under the terms of the GNU Library General Public
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## License as published by the Free Software Foundation; either
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## version 2 of the License, or (at your option) any later version.
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##
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## This library is distributed in the hope that it will be useful,
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## but WITHOUT ANY WARRANTY; without even the implied warranty of
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## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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## Library General Public License for more details.
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##
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## You should have received a copy of the GNU Library General Public
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## License along with this library; if not, write to the Free
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## Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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##
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## Marcus von Appen
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## mva@sysfault.org
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"""pygame module for accessing sound sample data
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Functions to convert between numpy arrays and Sound
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objects. This module will only be available when pygame can use the
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external numpy package.
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Sound data is made of thousands of samples per second, and each sample
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is the amplitude of the wave at a particular moment in time. For
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example, in 22-kHz format, element number 5 of the array is the
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amplitude of the wave after 5/22000 seconds.
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Each sample is an 8-bit or 16-bit integer, depending on the data format.
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A stereo sound file has two values per sample, while a mono sound file
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only has one.
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Supported array systems are
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numpy
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The array type to use can be changed at runtime using the use_arraytype()
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method, which requires one of the above types as string.
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Sounds with 16-bit data will be treated as unsigned integers,
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if the sound sample type requests this.
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"""
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import pygame._numpysndarray as numpysnd
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def array (sound):
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"""pygame.sndarray.array(Sound): return array
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Copy Sound samples into an array.
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Creates a new array for the sound data and copies the samples. The
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array will always be in the format returned from
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pygame.mixer.get_init().
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"""
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return numpysnd.array (sound)
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def samples (sound):
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"""pygame.sndarray.samples(Sound): return array
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Reference Sound samples into an array.
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Creates a new array that directly references the samples in a Sound
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object. Modifying the array will change the Sound. The array will
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always be in the format returned from pygame.mixer.get_init().
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"""
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return numpysnd.samples (sound)
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def make_sound (array):
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"""pygame.sndarray.make_sound(array): return Sound
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Convert an array into a Sound object.
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Create a new playable Sound object from an array. The mixer module
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must be initialized and the array format must be similar to the mixer
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audio format.
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"""
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return numpysnd.make_sound (array)
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def use_arraytype (arraytype):
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"""pygame.sndarray.use_arraytype (arraytype): return None
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DEPRECATED - only numpy arrays are now supported.
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"""
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arraytype = arraytype.lower ()
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if arraytype != 'numpy':
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raise ValueError("invalid array type")
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def get_arraytype ():
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"""pygame.sndarray.get_arraytype (): return str
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DEPRECATED - only numpy arrays are now supported.
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"""
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return 'numpy'
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def get_arraytypes ():
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"""pygame.sndarray.get_arraytypes (): return tuple
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DEPRECATED - only numpy arrays are now supported.
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"""
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return ('numpy',)
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