def get_CG_imagewrapper(rect=None):
from xpra.codecs.image_wrapper import ImageWrapper
assert CG, "cannot capture without Quartz.CoreGraphics"
if rect is None:
x = 0
y = 0
region = CG.CGRectInfinite
else:
x, y, w, h = rect
region = CG.CGRectMake(x, y, roundup(w, 2), roundup(h, 2))
image = CG.CGWindowListCreateImage(
region, CG.kCGWindowListOptionOnScreenOnly, CG.kCGNullWindowID,
CG.kCGWindowImageNominalResolution) #CG.kCGWindowImageDefault)
width = CG.CGImageGetWidth(image)
height = CG.CGImageGetHeight(image)
bpc = CG.CGImageGetBitsPerComponent(image)
bpp = CG.CGImageGetBitsPerPixel(image)
rowstride = CG.CGImageGetBytesPerRow(image)
alpha = CG.CGImageGetAlphaInfo(image)
alpha_str = ALPHA.get(alpha, alpha)
log(
"get_CG_imagewrapper(..) image size: %sx%s, bpc=%s, bpp=%s, rowstride=%s, alpha=%s",
width, height, bpc, bpp, rowstride, alpha_str)
prov = CG.CGImageGetDataProvider(image)
argb = CG.CGDataProviderCopyData(prov)
return ImageWrapper(x, y, width, height, argb, "BGRX", 24, rowstride)
def get_image(self, x, y, width, height, logger=None):
#region = CG.CGRectMake(0, 0, 100, 100)
region = CG.CGRectInfinite
image = CG.CGWindowListCreateImage(region,
CG.kCGWindowListOptionOnScreenOnly,
CG.kCGNullWindowID,
CG.kCGWindowImageDefault)
width = CG.CGImageGetWidth(image)
height = CG.CGImageGetHeight(image)
bpc = CG.CGImageGetBitsPerComponent(image)
bpp = CG.CGImageGetBitsPerPixel(image)
rowstride = CG.CGImageGetBytesPerRow(image)
alpha = CG.CGImageGetAlphaInfo(image)
alpha_str = ALPHA.get(alpha, alpha)
if logger:
logger("OSXRootWindowModel.get_image(..) image size: %sx%s, bpc=%s, bpp=%s, rowstride=%s, alpha=%s", width, height, bpc, bpp, rowstride, alpha_str)
prov = CG.CGImageGetDataProvider(image)
argb = CG.CGDataProviderCopyData(prov)
return ImageWrapper(0, 0, width, height, argb, "BGRX", 24, rowstride)
