119 lines
3.4 KiB
Python
119 lines
3.4 KiB
Python
import os
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import subprocess as sp
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from .compat import DEVNULL
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from .config_defaults import FFMPEG_BINARY, IMAGEMAGICK_BINARY
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if os.name == 'nt':
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try:
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import winreg as wr # py3k
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except ImportError:
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import _winreg as wr # py2k
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def try_cmd(cmd):
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try:
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popen_params = {
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"stdout": sp.PIPE,
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"stderr": sp.PIPE,
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"stdin": DEVNULL
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}
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# This was added so that no extra unwanted window opens on windows
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# when the child process is created
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if os.name == "nt":
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popen_params["creationflags"] = 0x08000000
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proc = sp.Popen(cmd, **popen_params)
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proc.communicate()
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except Exception as err:
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return False, err
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else:
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return True, None
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if FFMPEG_BINARY=='ffmpeg-imageio':
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from imageio.plugins.ffmpeg import get_exe
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FFMPEG_BINARY = get_exe()
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elif FFMPEG_BINARY=='auto-detect':
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if try_cmd(['ffmpeg'])[0]:
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FFMPEG_BINARY = 'ffmpeg'
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elif try_cmd(['ffmpeg.exe'])[0]:
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FFMPEG_BINARY = 'ffmpeg.exe'
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else:
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FFMPEG_BINARY = 'unset'
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else:
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success, err = try_cmd([FFMPEG_BINARY])
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if not success:
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raise IOError(
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str(err) +
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" - The path specified for the ffmpeg binary might be wrong")
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if IMAGEMAGICK_BINARY=='auto-detect':
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if os.name == 'nt':
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try:
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key = wr.OpenKey(wr.HKEY_LOCAL_MACHINE, 'SOFTWARE\\ImageMagick\\Current')
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IMAGEMAGICK_BINARY = wr.QueryValueEx(key, 'BinPath')[0] + r"\convert.exe"
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key.Close()
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except:
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IMAGEMAGICK_BINARY = 'unset'
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elif try_cmd(['convert'])[0]:
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IMAGEMAGICK_BINARY = 'convert'
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else:
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IMAGEMAGICK_BINARY = 'unset'
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else:
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if not os.path.exists(IMAGEMAGICK_BINARY):
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raise IOError(
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"ImageMagick binary cannot be found at {}".format(
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IMAGEMAGICK_BINARY
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)
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)
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if not os.path.isfile(IMAGEMAGICK_BINARY):
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raise IOError(
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"ImageMagick binary found at {} is not a file".format(
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IMAGEMAGICK_BINARY
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)
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)
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success, err = try_cmd([IMAGEMAGICK_BINARY])
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if not success:
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raise IOError("%s - The path specified for the ImageMagick binary might "
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"be wrong: %s" % (err, IMAGEMAGICK_BINARY))
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def get_setting(varname):
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""" Returns the value of a configuration variable. """
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gl = globals()
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if varname not in gl.keys():
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raise ValueError("Unknown setting %s"%varname)
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# Here, possibly add some code to raise exceptions if some
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# parameter isn't set set properly, explaining on how to set it.
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return gl[varname]
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def change_settings(new_settings=None, filename=None):
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""" Changes the value of configuration variables."""
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new_settings = new_settings or {}
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gl = globals()
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if filename:
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with open(filename) as in_file:
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exec(in_file)
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gl.update(locals())
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gl.update(new_settings)
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# Here you can add some code to check that the new configuration
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# values are valid.
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if __name__ == "__main__":
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if try_cmd([FFMPEG_BINARY])[0]:
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print( "MoviePy : ffmpeg successfully found." )
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else:
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print( "MoviePy : can't find or access ffmpeg." )
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if try_cmd([IMAGEMAGICK_BINARY])[0]:
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print( "MoviePy : ImageMagick successfully found." )
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else:
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print( "MoviePy : can't find or access ImageMagick." )
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