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Diffstat (limited to 'lib/pygame/_numpysndarray.py')
| -rwxr-xr-x | lib/pygame/_numpysndarray.py | 136 |
1 files changed, 0 insertions, 136 deletions
diff --git a/lib/pygame/_numpysndarray.py b/lib/pygame/_numpysndarray.py deleted file mode 100755 index 58c7fba..0000000 --- a/lib/pygame/_numpysndarray.py +++ /dev/null @@ -1,136 +0,0 @@ -## pygame - Python Game Library -## Copyright (C) 2008 Marcus von Appen -## -## This library is free software; you can redistribute it and/or -## modify it under the terms of the GNU Library General Public -## License as published by the Free Software Foundation; either -## version 2 of the License, or (at your option) any later version. -## -## This library is distributed in the hope that it will be useful, -## but WITHOUT ANY WARRANTY; without even the implied warranty of -## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU -## Library General Public License for more details. -## -## You should have received a copy of the GNU Library General Public -## License along with this library; if not, write to the Free -## Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA -## -## Marcus von Appen -## mva@sysfault.org - -"""pygame module for accessing sound sample data using numpy - -Functions to convert between numpy arrays and Sound objects. This module -will only be available when pygame can use the external numpy package. - -Sound data is made of thousands of samples per second, and each sample -is the amplitude of the wave at a particular moment in time. For -example, in 22-kHz format, element number 5 of the array is the -amplitude of the wave after 5/22000 seconds. - -Each sample is an 8-bit or 16-bit integer, depending on the data format. -A stereo sound file has two values per sample, while a mono sound file -only has one. -""" - -import pygame -import pygame.mixer as mixer -import numpy - -def _array_samples(sound, raw): - # Info is a (freq, format, stereo) tuple - info = mixer.get_init () - if not info: - raise pygame.error("Mixer not initialized") - fmtbytes = (abs (info[1]) & 0xff) >> 3 - channels = info[2] - if raw: - data = sound.get_buffer ().raw - else: - data = sound.get_buffer () - - shape = (len (data) // fmtbytes, ) - if channels > 1: - shape = (shape[0] // channels, channels) - - # mixer.init () does not support different formats from the ones below, - # so MSB/LSB stuff is silently ignored. - typecode = { 8 : numpy.uint8, # AUDIO_U8 - 16 : numpy.uint16, # AUDIO_U16 / AUDIO_U16SYS - -8 : numpy.int8, # AUDIO_S8 - -16 : numpy.int16 # AUDUI_S16 / AUDIO_S16SYS - }[info[1]] - - array = numpy.fromstring (data, typecode) - array.shape = shape - return array - -def array (sound): - """pygame._numpysndarray.array(Sound): return array - - Copy Sound samples into an array. - - Creates a new array for the sound data and copies the samples. The - array will always be in the format returned from - pygame.mixer.get_init(). - """ - return _array_samples(sound, True) - -def samples (sound): - """pygame._numpysndarray.samples(Sound): return array - - Reference Sound samples into an array. - - Creates a new array that directly references the samples in a Sound - object. Modifying the array will change the Sound. The array will - always be in the format returned from pygame.mixer.get_init(). - """ - # Info is a (freq, format, stereo) tuple - info = pygame.mixer.get_init () - if not info: - raise pygame.error("Mixer not initialized") - fmtbytes = (abs (info[1]) & 0xff) >> 3 - channels = info[2] - data = sound.get_buffer () - - shape = (data.length // fmtbytes, ) - if channels > 1: - shape = (shape[0] // channels, channels) - - # mixer.init () does not support different formats from the ones below, - # so MSB/LSB stuff is silently ignored. - typecode = { 8 : numpy.uint8, # AUDIO_U8 - 16 : numpy.uint16, # AUDIO_U16 - -8 : numpy.int8, # AUDIO_S8 - -16 : numpy.int16 # AUDUI_S16 - }[info[1]] - - array = numpy.frombuffer (data, typecode) - array.shape = shape - return array - -def make_sound (array): - """pygame._numpysndarray.make_sound(array): return Sound - - Convert an array into a Sound object. - - Create a new playable Sound object from an array. The mixer module - must be initialized and the array format must be similar to the mixer - audio format. - """ - # Info is a (freq, format, stereo) tuple - info = pygame.mixer.get_init () - if not info: - raise pygame.error("Mixer not initialized") - channels = info[2] - - shape = array.shape - if channels == 1: - if len (shape) != 1: - raise ValueError("Array must be 1-dimensional for mono mixer") - else: - if len (shape) != 2: - raise ValueError("Array must be 2-dimensional for stereo mixer") - elif shape[1] != channels: - raise ValueError("Array depth must match number of mixer channels") - return mixer.Sound (array) |