PFA - pdf i used to extract images, screenshots of the error.
The code i used is the one mentioned in the documentation.
It is not converting imagetype : x-wmf to jpeg and is failing to save it.
PDF:
pptexamples.zip (1.0 MB)
@Naveenj,
Thank you for contacting support.
Please try using the following code example:
import aspose.pydrawing as draw
import aspose.slides as slides
# Please note that the get_image_format and get_file_extension must be consistent by keys.
def get_image_format(image_type):
return {
"jpeg": draw.imaging.ImageFormat.jpeg,
"emf": draw.imaging.ImageFormat.emf,
"bmp": draw.imaging.ImageFormat.bmp,
"png": draw.imaging.ImageFormat.png,
"wmf": draw.imaging.ImageFormat.wmf,
"x-wmf": draw.imaging.ImageFormat.wmf,
"gif": draw.imaging.ImageFormat.gif,
}.get(image_type, draw.imaging.ImageFormat.jpeg)
def get_file_extension(image_type):
return {
"jpeg": "jpg",
"emf": "emf",
"bmp": "bmp",
"png": "png",
"wmf": "wmf",
"x-wmf": "wmf",
"gif": "gif",
}.get(image_type, "jpg")
file_name = "BackImage_Slide_{0}{1}.{2}"
with slides.Presentation("pptexamples.ppt") as presentation:
for slide in presentation.slides:
back_image = None
is_layout = False
if slide.background.fill_format.fill_type == slides.FillType.PICTURE:
back_image = slide.background.fill_format.picture_fill_format.picture.image
elif slide.layout_slide.background.fill_format.fill_type == slides.FillType.PICTURE:
back_image = slide.layout_slide.background.fill_format.picture_fill_format.picture.image
is_layout = True
if back_image is not None:
image_type = back_image.content_type.split("/")[1]
image_format = get_image_format(image_type)
file_extension = get_file_extension(image_type)
back_image.system_image.save(
file_name.format("LayoutSlide_" if is_layout else "", slide.slide_number, file_extension),
image_format)
for shape_index, shape in enumerate(slide.shapes):
shape_image = None
if type(shape) is slides.AutoShape and shape.fill_format.fill_type == slides.FillType.PICTURE:
shape_image = shape.fill_format.picture_fill_format.picture.image
elif type(shape) is slides.PictureFrame:
shape_image = shape.picture_format.picture.image
if shape_image is not None:
image_type = shape_image.content_type.split("/")[1]
image_format = get_image_format(image_type)
file_extension = get_file_extension(image_type)
shape_image.system_image.save(
file_name.format("shape_" + str(shape_index) + "_", slide.slide_number, file_extension),
image_format)
You can also extract all images from presentation resources like this:
import aspose.pydrawing as draw
import aspose.slides as slides
# Please note that the get_image_format and get_file_extension must be consistent by keys.
def get_image_format(image_type):
return {
"jpeg": draw.imaging.ImageFormat.jpeg,
"emf": draw.imaging.ImageFormat.emf,
"bmp": draw.imaging.ImageFormat.bmp,
"png": draw.imaging.ImageFormat.png,
"wmf": draw.imaging.ImageFormat.wmf,
"x-wmf": draw.imaging.ImageFormat.wmf,
"gif": draw.imaging.ImageFormat.gif,
}.get(image_type, draw.imaging.ImageFormat.jpeg)
def get_file_extension(image_type):
return {
"jpeg": "jpg",
"emf": "emf",
"bmp": "bmp",
"png": "png",
"wmf": "wmf",
"x-wmf": "wmf",
"gif": "gif",
}.get(image_type, "jpg")
file_name = "image_{0}.{1}"
with slides.Presentation("pptexamples.ppt") as presentation:
for image_index, image in enumerate(presentation.images):
image_type = image.content_type.split("/")[1]
image_format = get_image_format(image_type)
file_extension = get_file_extension(image_type)
image.system_image.save(
file_name.format(image_index, file_extension),
image_format)
@Naveenj,
Thank you for the additional information. I’ve reproduced the error you are encountering.
We have opened the following new ticket(s) in our internal issue tracking system and will deliver their fixes according to the terms mentioned in Free Support Policies.
Issue ID(s): SLIDESPYNET-133
You can obtain Paid Support Services if you need support on a priority basis, along with the direct access to our Paid Support management team.
@Naveenj,
There is no implementation of encoders for WMF/EMF images in .NET, so you get the error on Linux. The PPImage class contains the binary_data property, and you can save raw data of images. Please consider a solution like this:
import logging
import aspose.slides as slides
def get_file_extension(image_type):
return {
"jpeg": "jpg",
"emf": "emf",
"bmp": "bmp",
"png": "png",
"wmf": "wmf",
"x-wmf": "wmf",
"gif": "gif",
}.get(image_type, "")
presentation_path = "pptexamples.ppt"
file_name_template = "image_{0}.{1}"
with slides.Presentation(presentation_path) as presentation:
for image_index, image in enumerate(presentation.images):
image_type = image.content_type.split("/")[1]
file_extension = get_file_extension(image_type)
if not file_extension:
message = "Failed to extract an '{0}' image.".format(image_type)
logging.exception(message)
else:
file_name = file_name_template.format(image_index, file_extension)
with open(file_name, 'wb') as image_file:
image_file.write(image.binary_data)