本文整理汇总了Python中PIL.JpegImagePlugin.i32方法的典型用法代码示例。如果您正苦于以下问题：Python JpegImagePlugin.i32方法的具体用法？Python JpegImagePlugin.i32怎么用？Python JpegImagePlugin.i32使用的例子？那么恭喜您, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类PIL.JpegImagePlugin的用法示例。
在下文中一共展示了JpegImagePlugin.i32方法的1个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的Python代码示例。
示例1: getiptcinfo
# 需要导入模块: from PIL import JpegImagePlugin [as 别名]
# 或者: from PIL.JpegImagePlugin import i32 [as 别名]
def getiptcinfo(im):
import StringIO
data = None
if isinstance(im, IptcImageFile):
# return info dictionary right away
return im.info
elif isinstance(im, JpegImagePlugin.JpegImageFile):
# extract the IPTC/NAA resource
try:
app = im.app["APP13"]
if app[:14] == "Photoshop 3.0\x00":
app = app[14:]
# parse the image resource block
offset = 0
while app[offset:offset+4] == "8BIM":
offset = offset + 4
# resource code
code = JpegImagePlugin.i16(app, offset)
offset = offset + 2
# resource name (usually empty)
name_len = ord(app[offset])
name = app[offset+1:offset+1+name_len]
offset = 1 + offset + name_len
if offset & 1:
offset = offset + 1
# resource data block
size = JpegImagePlugin.i32(app, offset)
offset = offset + 4
if code == 0x0404:
# 0x0404 contains IPTC/NAA data
data = app[offset:offset+size]
break
offset = offset + size
if offset & 1:
offset = offset + 1
except (AttributeError, KeyError):
pass
elif isinstance(im, TiffImagePlugin.TiffImageFile):
# get raw data from the IPTC/NAA tag (PhotoShop tags the data
# as 4-byte integers, so we cannot use the get method...)
try:
type, data = im.tag.tagdata[TiffImagePlugin.IPTC_NAA_CHUNK]
except (AttributeError, KeyError):
pass
if data is None:
return None # no properties
# create an IptcImagePlugin object without initializing it
class FakeImage:
pass
im = FakeImage()
im.__class__ = IptcImageFile
# parse the IPTC information chunk
im.info = {}
im.fp = StringIO.StringIO(data)
try:
im._open()
except (IndexError, KeyError):
pass # expected failure
return im.info