forked from josch/img2pdf
add --rotation argument overwriting exif data (closes: #100)
This commit is contained in:
parent
114d7270a2
commit
b4c8aa1a5f
GPG key ID:
F2CBA5C78FBD83E1
1 changed files with 81 additions and 27 deletions
108
src/img2pdf.py
108
src/img2pdf.py
|
|
@ -79,6 +79,8 @@ papernames = {
|
|||
|
||||
Engine = Enum("Engine", "internal pdfrw pikepdf")
|
||||
|
||||
Rotation = Enum("Rotation", "auto none ifvalid 0 90 180 270")
|
||||
|
||||
FitMode = Enum("FitMode", "into fill exact shrink enlarge")
|
||||
|
||||
PageOrientation = Enum("PageOrientation", "portrait landscape")
|
||||
|
|
@ -1155,7 +1157,9 @@ class pdfdoc(object):
|
|||
raise ValueError("unknown engine: %s" % self.engine)
|
||||
|
||||
|
||||
def get_imgmetadata(imgdata, imgformat, default_dpi, colorspace, rawdata=None):
|
||||
def get_imgmetadata(
|
||||
imgdata, imgformat, default_dpi, colorspace, rawdata=None, rotreq=None
|
||||
):
|
||||
if imgformat == ImageFormat.JPEG2000 and rawdata is not None and imgdata is None:
|
||||
# this codepath gets called if the PIL installation is not able to
|
||||
# handle JPEG2000 files
|
||||
|
|
@ -1206,25 +1210,44 @@ def get_imgmetadata(imgdata, imgformat, default_dpi, colorspace, rawdata=None):
|
|||
logger.debug("input dpi = %d x %d", *ndpi)
|
||||
|
||||
rotation = 0
|
||||
if hasattr(imgdata, "_getexif") and imgdata._getexif() is not None:
|
||||
for tag, value in imgdata._getexif().items():
|
||||
if TAGS.get(tag, tag) == "Orientation":
|
||||
# Detailed information on EXIF rotation tags:
|
||||
# http://impulseadventure.com/photo/exif-orientation.html
|
||||
if value == 1:
|
||||
rotation = 0
|
||||
elif value == 6:
|
||||
rotation = 90
|
||||
elif value == 3:
|
||||
rotation = 180
|
||||
elif value == 8:
|
||||
rotation = 270
|
||||
elif value in (2, 4, 5, 7):
|
||||
raise ExifOrientationError(
|
||||
"Unsupported flipped rotation mode (%d)" % value
|
||||
)
|
||||
else:
|
||||
raise ExifOrientationError("Invalid rotation (%d)" % value)
|
||||
if rotreq in (None, Rotation.auto, Rotation.ifvalid):
|
||||
if hasattr(imgdata, "_getexif") and imgdata._getexif() is not None:
|
||||
for tag, value in imgdata._getexif().items():
|
||||
if TAGS.get(tag, tag) == "Orientation":
|
||||
# Detailed information on EXIF rotation tags:
|
||||
# http://impulseadventure.com/photo/exif-orientation.html
|
||||
if value == 1:
|
||||
rotation = 0
|
||||
elif value == 6:
|
||||
rotation = 90
|
||||
elif value == 3:
|
||||
rotation = 180
|
||||
elif value == 8:
|
||||
rotation = 270
|
||||
elif value in (2, 4, 5, 7):
|
||||
if rotreq == Rotation.ifvalid:
|
||||
logger.warning(
|
||||
"Unsupported flipped rotation mode (%d)", value
|
||||
)
|
||||
else:
|
||||
raise ExifOrientationError(
|
||||
"Unsupported flipped rotation mode (%d)" % value
|
||||
)
|
||||
else:
|
||||
if rotreq == Rotation.ifvalid:
|
||||
logger.warning("Invalid rotation (%d)", value)
|
||||
else:
|
||||
raise ExifOrientationError("Invalid rotation (%d)" % value)
|
||||
elif rotreq in (Rotation.none, Rotation["0"]):
|
||||
rotation = 0
|
||||
elif rotreq == Rotation["90"]:
|
||||
rotation = 90
|
||||
elif rotreq == Rotation["180"]:
|
||||
rotation = 180
|
||||
elif rotreq == Rotation["270"]:
|
||||
rotation = 270
|
||||
else:
|
||||
raise Exception("invalid rotreq")
|
||||
|
||||
logger.debug("rotation = %d°", rotation)
|
||||
|
||||
|
|
@ -1344,7 +1367,7 @@ def parse_png(rawdata):
|
|||
return pngidat, palette
|
||||
|
||||
|
||||
def read_images(rawdata, colorspace, first_frame_only=False):
|
||||
def read_images(rawdata, colorspace, first_frame_only=False, rot=None):
|
||||
im = BytesIO(rawdata)
|
||||
im.seek(0)
|
||||
imgdata = None
|
||||
|
|
@ -1386,7 +1409,7 @@ def read_images(rawdata, colorspace, first_frame_only=False):
|
|||
# JPEG and JPEG2000 can be embedded into the PDF as-is
|
||||
if imgformat == ImageFormat.JPEG or imgformat == ImageFormat.JPEG2000:
|
||||
color, ndpi, imgwidthpx, imgheightpx, rotation, iccp = get_imgmetadata(
|
||||
imgdata, imgformat, default_dpi, colorspace, rawdata
|
||||
imgdata, imgformat, default_dpi, colorspace, rawdata, rot
|
||||
)
|
||||
if color == Colorspace["1"]:
|
||||
raise JpegColorspaceError("jpeg can't be monochrome")
|
||||
|
|
@ -1443,7 +1466,7 @@ def read_images(rawdata, colorspace, first_frame_only=False):
|
|||
rotation,
|
||||
iccp,
|
||||
) = get_imgmetadata(
|
||||
imframe, ImageFormat.JPEG, default_dpi, colorspace
|
||||
imframe, ImageFormat.JPEG, default_dpi, colorspace, rotreq=rot
|
||||
)
|
||||
if color == Colorspace["1"]:
|
||||
raise JpegColorspaceError("jpeg can't be monochrome")
|
||||
|
|
@ -1480,7 +1503,7 @@ def read_images(rawdata, colorspace, first_frame_only=False):
|
|||
# must be the first chunk.
|
||||
if imgformat == ImageFormat.PNG and rawdata[28] == 0:
|
||||
color, ndpi, imgwidthpx, imgheightpx, rotation, iccp = get_imgmetadata(
|
||||
imgdata, imgformat, default_dpi, colorspace, rawdata
|
||||
imgdata, imgformat, default_dpi, colorspace, rawdata, rot
|
||||
)
|
||||
pngidat, palette = parse_png(rawdata)
|
||||
# PIL does not provide the information about the original bits per
|
||||
|
|
@ -1562,7 +1585,7 @@ def read_images(rawdata, colorspace, first_frame_only=False):
|
|||
"group4 tiff: %d" % photo
|
||||
)
|
||||
color, ndpi, imgwidthpx, imgheightpx, rotation, iccp = get_imgmetadata(
|
||||
imgdata, imgformat, default_dpi, colorspace, rawdata
|
||||
imgdata, imgformat, default_dpi, colorspace, rawdata, rot
|
||||
)
|
||||
offset, length = ccitt_payload_location_from_pil(imgdata)
|
||||
im.seek(offset)
|
||||
|
|
@ -1605,7 +1628,7 @@ def read_images(rawdata, colorspace, first_frame_only=False):
|
|||
logger.debug("Converting frame: %d" % img_page_count)
|
||||
|
||||
color, ndpi, imgwidthpx, imgheightpx, rotation, iccp = get_imgmetadata(
|
||||
imgdata, imgformat, default_dpi, colorspace
|
||||
imgdata, imgformat, default_dpi, colorspace, rotreq=rot
|
||||
)
|
||||
|
||||
newimg = None
|
||||
|
|
@ -2022,6 +2045,7 @@ def convert(*images, **kwargs):
|
|||
trimborder=None,
|
||||
artborder=None,
|
||||
pdfa=None,
|
||||
rotation=None,
|
||||
)
|
||||
for kwname, default in _default_kwargs.items():
|
||||
if kwname not in kwargs:
|
||||
|
|
@ -2099,7 +2123,12 @@ def convert(*images, **kwargs):
|
|||
depth,
|
||||
rotation,
|
||||
iccp,
|
||||
) in read_images(rawdata, kwargs["colorspace"], kwargs["first_frame_only"]):
|
||||
) in read_images(
|
||||
rawdata,
|
||||
kwargs["colorspace"],
|
||||
kwargs["first_frame_only"],
|
||||
kwargs["rotation"],
|
||||
):
|
||||
pagewidth, pageheight, imgwidthpdf, imgheightpdf = kwargs["layout_fun"](
|
||||
imgwidthpx, imgheightpx, ndpi
|
||||
)
|
||||
|
|
@ -2402,6 +2431,13 @@ def input_images(path_expr):
|
|||
return result
|
||||
|
||||
|
||||
def parse_rotationarg(string):
|
||||
for m in Rotation:
|
||||
if m.name == string.lower():
|
||||
return m
|
||||
raise argparse.ArgumentTypeError("unknown rotation value: %s" % string)
|
||||
|
||||
|
||||
def parse_fitarg(string):
|
||||
for m in FitMode:
|
||||
if m.name == string.lower():
|
||||
|
|
@ -3560,6 +3596,23 @@ of the input image. If the orientation of a page gets flipped, then so do the
|
|||
values set via the --border option.
|
||||
""",
|
||||
)
|
||||
sizeargs.add_argument(
|
||||
"-r",
|
||||
"--rotation",
|
||||
"--orientation",
|
||||
metavar="ROT",
|
||||
type=parse_rotationarg,
|
||||
default=Rotation.auto,
|
||||
help="""
|
||||
Specifies how input images should be rotated. ROT can be one of auto, none,
|
||||
ifvalid, 0, 90, 180 and 270. The default value is auto and indicates that input
|
||||
images are rotated according to their EXIF Orientation tag. The values none and
|
||||
0 ignore the EXIF Orientation values of the input images. The value ifvalid
|
||||
acts like auto but ignores invalid EXIF rotation values and only issues a
|
||||
warning instead of throwing an error. The values 90, 180 and 270 perform a
|
||||
clockwise rotation of the image.
|
||||
""",
|
||||
)
|
||||
sizeargs.add_argument(
|
||||
"--crop-border",
|
||||
metavar="L[:L]",
|
||||
|
|
@ -3797,6 +3850,7 @@ and left/right, respectively. It is not possible to specify asymmetric borders.
|
|||
trimborder=args.trim_border,
|
||||
artborder=args.art_border,
|
||||
pdfa=args.pdfa,
|
||||
rotation=args.rotation,
|
||||
)
|
||||
except Exception as e:
|
||||
logger.error("error: " + str(e))
|
||||
|
|
|
|||
Loading…
Reference in a new issue