def __init__(self, sound, medium):
self._medium = medium
self._movie = medium.movie
self.sound = sound
# Get CGL context and pixel format (10.4 only)
agl_context = gl.get_current_context()._context
agl_pixelformat = gl.get_current_context()._pixelformat
cgl_context = ctypes.c_void_p()
agl.aglGetCGLContext(agl_context, ctypes.byref(cgl_context))
cgl_pixelformat = ctypes.c_void_p()
agl.aglGetCGLPixelFormat(
agl_pixelformat, ctypes.byref(cgl_pixelformat))
# No attributes on texture contexts, only pixel buffer, according to
# apple docs ref'd in class docstring.
textureContextAttributes = None
self.context = ctypes.c_void_p()
r = quicktime.QTOpenGLTextureContextCreate(
None,
cgl_context,
cgl_pixelformat,
textureContextAttributes,
ctypes.byref(self.context))
_oscheck(r)
if textureContextAttributes:
quicktime.CFRelease(textureContextAttributes)
# Get dimensions of video
rect = Rect()
quicktime.GetMovieBox(self._movie, ctypes.byref(rect))
self.width = rect.right - rect.left
self.height = rect.bottom - rect.top
# Set to null before setting real context to disassocate from
# automatically created gworld.
quicktime.SetMovieVisualContext(self._movie, None)
quicktime.SetMovieVisualContext(self._movie, self.context)
# Dummy texture object to hold id and target of textures returned by
# corevideo. XXX need to cleanup texture data after first frame
# retrieved.
self._texture = image.Texture.create_for_size(GL_TEXTURE_2D,
self.width, self.height)
self._last_cv_image = None
def errcheck_glbegin(result, func, arguments):
from pyglet.gl import get_current_context
context = get_current_context()
if not context:
raise GLException('No GL context; create a Window first')
context._gl_begin = True
return result
def errcheck_glend(result, func, arguments):
from pyglet.gl import get_current_context
context = get_current_context()
if not context:
raise GLException('No GL context; create a Window first')
context._gl_begin = False
return errcheck(result, func, arguments)
def errcheck(result, func, arguments):
from pyglet.gl import get_current_context
context = get_current_context()
if not context:
raise GLException('No GL context; create a Window first')
if not context._gl_begin:
from pyglet.gl import glGetError, gluErrorString
error = glGetError()
if error:
message = ctypes.cast(gluErrorString(error), ctypes.c_char_p).value
raise GLException(message)
return result
def errcheck(result, func, arguments):
from pyglet.gl import get_current_context
context = get_current_context()
if not context:
raise GLException('No GL context; create a Window first')
if not context._gl_begin:
from pyglet.gl import glGetError, gluErrorString
error = glGetError()
if error:
message = ctypes.cast(gluErrorString(error), ctypes.c_char_p).value
raise GLException(message)
return result
